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Commit f873e151 authored by Kirill Smelkov's avatar Kirill Smelkov
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Merge branch 'master' into t 

* master: (23 commits)
  Make the identification of the primary master easier with 'neoctl print node'
  client: fix AttributeError when connected to a master that happens to be secondary
  qa: speed up SQlite tests by accessing DBs in unsafe mode (e.g. no sync)
  master: fix identification of unknown masters
  Better logging of connector errors
  qa: relax assertion in testDeadlockAvoidanceBeforeInvolvingAnotherNode
  client: fix possible data corruption after conflict resolutions with replicas
  qa: new --readable-tid runner option
  qa: make Patch work on functions
  qa: new --continue-on-success and --stop-on-success runner options
  doc: add advice about the number of master nodes to set up
  Improvements to --dynamic-master-list
  Make NodeManager.remove stricter
  Clean up neo.lib.protocol
  Use ProtocolError instead of Notify for unexpected answers, and drop Notify
  Rename node states: DOWN -> UNKNOWN, TEMPORARILY_DOWN -> DOWN
  Remove UNKNOWN node state
  Reimplement election (of the primary master)
  Use existing generic way to ignore AcceptIdentification on closed connections
  Remove BROKEN node state
  ...
parents 421fda44 09bc404f
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TODO
View file @ f873e151
Documentation
- Clarify node state signification, and consider renaming them in the code.
Ideas:
TEMPORARILY_DOWN becomes UNAVAILABLE
BROKEN is removed ?
- Clarify the use of each error codes:
- NOT_READY removed (connection kept opened until ready)
- Split PROTOCOL_ERROR (BAD IDENTIFICATION, ...)
......@@ -25,8 +21,6 @@
This is mainly the case for :
- Client rejected before the cluster is operational
- Empty storages rejected during recovery process
Masters implies in the election process should still reject any connection
as the primary master is still unknown.
- Implement transaction garbage collection API (FEATURE)
NEO packing implementation does not update transaction metadata when
deleting object revisions. This inconsistency must be made possible to
......@@ -36,9 +30,9 @@
The same code to ask/receive node list and partition table exists in too
many places.
- Clarify handler methods to call when a connection is accepted from a
listening conenction and when remote node is identified
listening connection and when remote node is identified
(cf. neo/lib/bootstrap.py).
- Review PENDING/HIDDEN/SHUTDOWN states, don't use notifyNodeInformation()
- Review PENDING/SHUTDOWN states, don't use notifyNodeInformation()
to do a state-switch, use a exception-based mechanism ? (CODE)
- Review handler split (CODE)
The current handler split is the result of small incremental changes. A
......@@ -71,7 +65,7 @@
which is an issue on big databases. (SPEED)
- Pack segmentation & throttling (HIGH AVAILABILITY)
In its current implementation, pack runs in one call on all storage nodes
at the same time, which lcoks down the whole cluster. This task should
at the same time, which locks down the whole cluster. This task should
be split in chunks and processed in "background" on storage nodes.
Packing throttling should probably be at the lowest possible priority
(below interactive use and below replication).
......@@ -122,9 +116,9 @@
Later
- Consider auto-generating cluster name upon initial startup (it might
actualy be a partition property).
actually be a partition property).
- Consider ways to centralise the configuration file, or make the
configuration updatable automaticaly on all nodes.
configuration updatable automatically on all nodes.
- Consider storing some metadata on master nodes (partition table [version],
...). This data should be treated non-authoritatively, as a way to lower
the probability to use an outdated partition table.
......
neo.conf
View file @ f873e151
# Note: Unless otherwise noted, all parameters in this configuration file
# must be identical for all nodes in a given cluster.
# This file is optionnal: parameters can be given at the command line.
# This file is optional: parameters can be given at the command line.
# See SafeConfigParser at https://docs.python.org/2/library/configparser.html
# for more information about the syntax.
......@@ -17,9 +17,10 @@
cluster: test
# The list of master nodes
# Master nodes not not in this list will be rejected by the cluster.
# This list should be identical for all nodes in a given cluster for
# maximum availability.
# With replicas, it is recommended to have 1 master node per machine
# (physical or not). Otherwise, 1 is enough (but more do not harm).
masters: 127.0.0.1:10000
# Partition table configuration
......@@ -58,7 +59,7 @@ partitions: 12
# - MySQL: [user[:password]@]database[unix_socket]
# Database must be created manually.
# - SQLite: path
# engine: Optionnal parameter for MySQL.
# engine: Optional parameter for MySQL.
# Can be InnoDB (default), RocksDB or TokuDB.
# Admin node
......
neo/client/app.py
View file @ f873e151
......@@ -194,17 +194,17 @@ class Application(ThreadedApplication):
self.nm.reset()
if self.primary_master_node is not None:
# If I know a primary master node, pinpoint it.
self.trying_master_node = self.primary_master_node
node = self.primary_master_node
self.primary_master_node = None
else:
# Otherwise, check one by one.
master_list = self.nm.getMasterList()
index = (index + 1) % len(master_list)
self.trying_master_node = master_list[index]
node = master_list[index]
# Connect to master
conn = MTClientConnection(self,
self.notifications_handler,
node=self.trying_master_node,
node=node,
dispatcher=self.dispatcher)
p = Packets.RequestIdentification(
NodeTypes.CLIENT, self.uuid, None, self.name, None)
......@@ -212,10 +212,8 @@ class Application(ThreadedApplication):
ask(conn, p, handler=handler)
except ConnectionClosed:
fail_count += 1
continue
# If we reached the primary master node, mark as connected
if self.primary_master_node is not None and \
self.primary_master_node is self.trying_master_node:
else:
self.primary_master_node = node
break
else:
raise NEOPrimaryMasterLost(
......@@ -444,8 +442,8 @@ class Application(ThreadedApplication):
# Store object in tmp cache
packet = Packets.AskStoreObject(oid, serial, compression,
checksum, compressed_data, data_serial, ttid)
txn_context.data_dict[oid] = data, txn_context.write(
self, packet, oid, oid=oid, serial=serial)
txn_context.data_dict[oid] = data, serial, txn_context.write(
self, packet, oid, oid=oid)
while txn_context.data_size >= self._cache._max_size:
self._waitAnyTransactionMessage(txn_context)
......@@ -462,13 +460,13 @@ class Application(ThreadedApplication):
# This is also done atomically, to avoid race conditions
# with PrimaryNotificationsHandler.notifyDeadlock
try:
oid, (serial, conflict_serial) = pop_conflict()
oid, serial = pop_conflict()
except KeyError:
return
try:
data = data_dict.pop(oid)[0]
data, old_serial, _ = data_dict.pop(oid)
except KeyError:
assert oid is conflict_serial is None, (oid, conflict_serial)
assert oid is None, (oid, serial)
# Storage refused us from taking object lock, to avoid a
# possible deadlock. TID is actually used for some kind of
# "locking priority": when a higher value has the lock,
......@@ -487,33 +485,32 @@ class Application(ThreadedApplication):
self._askStorageForWrite(txn_context, uuid, packet)
else:
if data is CHECKED_SERIAL:
raise ReadConflictError(oid=oid, serials=(conflict_serial,
serial))
raise ReadConflictError(oid=oid,
serials=(serial, old_serial))
# TODO: data can be None if a conflict happens during undo
if data:
txn_context.data_size -= len(data)
if self.last_tid < conflict_serial:
if self.last_tid < serial:
self.sync() # possible late invalidation (very rare)
try:
data = tryToResolveConflict(oid, conflict_serial,
serial, data)
data = tryToResolveConflict(oid, serial, old_serial, data)
except ConflictError:
logging.info(
'Conflict resolution failed for %s@%s with %s',
dump(oid), dump(serial), dump(conflict_serial))
dump(oid), dump(old_serial), dump(serial))
# With recent ZODB, get_pickle_metadata (from ZODB.utils)
# does not support empty values, so do not pass 'data'
# in this case.
raise ConflictError(oid=oid, serials=(conflict_serial,
serial), data=data or None)
raise ConflictError(oid=oid, serials=(serial, old_serial),
data=data or None)
else:
logging.info(
'Conflict resolution succeeded for %s@%s with %s',
dump(oid), dump(serial), dump(conflict_serial))
dump(oid), dump(old_serial), dump(serial))
# Mark this conflict as resolved
resolved_dict[oid] = conflict_serial
resolved_dict[oid] = serial
# Try to store again
self._store(txn_context, oid, conflict_serial, data)
self._store(txn_context, oid, serial, data)
def _askStorageForWrite(self, txn_context, uuid, packet):
node = self.nm.getByUUID(uuid)
......@@ -929,7 +926,7 @@ class Application(ThreadedApplication):
assert oid not in txn_context.cache_dict, oid
assert oid not in txn_context.data_dict, oid
packet = Packets.AskCheckCurrentSerial(ttid, oid, serial)
txn_context.data_dict[oid] = CHECKED_SERIAL, txn_context.write(
self, packet, oid, 0, oid=oid, serial=serial)
txn_context.data_dict[oid] = CHECKED_SERIAL, serial, txn_context.write(
self, packet, oid, 0, oid=oid)
self._waitAnyTransactionMessage(txn_context, False)
neo/client/handlers/master.py
View file @ f873e151
......@@ -15,10 +15,10 @@
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from neo.lib import logging
from neo.lib.exception import PrimaryElected
from neo.lib.handler import MTEventHandler
from neo.lib.pt import MTPartitionTable as PartitionTable
from neo.lib.protocol import NodeStates, ProtocolError
from neo.lib.util import dump
from neo.lib.protocol import NodeStates
from . import AnswerBaseHandler
from ..exception import NEOStorageError
......@@ -26,10 +26,6 @@ from ..exception import NEOStorageError
class PrimaryBootstrapHandler(AnswerBaseHandler):
""" Bootstrap handler used when looking for the primary master """
def notReady(self, conn, message):
self.app.trying_master_node = None
conn.close()
def answerPartitionTable(self, conn, ptid, row_list):
assert row_list
self.app.pt.load(ptid, row_list, self.app.nm)
......@@ -40,57 +36,14 @@ class PrimaryBootstrapHandler(AnswerBaseHandler):
class PrimaryNotificationsHandler(MTEventHandler):
""" Handler that process the notifications from the primary master """
def _acceptIdentification(self, node, uuid, num_partitions,
num_replicas, your_uuid, primary, known_master_list):
app = self.app
# Register new master nodes.
found = False
conn_address = node.getAddress()
for node_address, node_uuid in known_master_list:
if node_address == conn_address:
assert uuid == node_uuid, (dump(uuid), dump(node_uuid))
found = True
n = app.nm.getByAddress(node_address)
if n is None:
n = app.nm.createMaster(address=node_address)
if node_uuid is not None and n.getUUID() != node_uuid:
n.setUUID(node_uuid)
assert found, (node, dump(uuid), known_master_list)
conn = node.getConnection()
if primary is not None:
primary_node = app.nm.getByAddress(primary)
if primary_node is None:
# I don't know such a node. Probably this information
# is old. So ignore it.
logging.warning('Unknown primary master: %s. Ignoring.',
primary)
return
else:
if app.trying_master_node is not primary_node:
app.trying_master_node = None
conn.close()
app.primary_master_node = primary_node
else:
if app.primary_master_node is not None:
# The primary master node is not a primary master node
# any longer.
app.primary_master_node = None
app.trying_master_node = None
conn.close()
return
# the master must give an UUID
if your_uuid is None:
raise ProtocolError('No UUID supplied')
app.uuid = your_uuid
logging.info('Got an UUID: %s', dump(app.uuid))
app.id_timestamp = None
def notPrimaryMaster(self, *args):
try:
super(PrimaryNotificationsHandler, self).notPrimaryMaster(*args)
except PrimaryElected, e:
app.primary_master_node, = e.args
# Always create partition table
app.pt = PartitionTable(num_partitions, num_replicas)
def _acceptIdentification(self, node, num_partitions, num_replicas):
self.app.pt = PartitionTable(num_partitions, num_replicas)
def answerLastTransaction(self, conn, ltid):
app = self.app
......@@ -189,7 +142,7 @@ class PrimaryNotificationsHandler(MTEventHandler):
def notifyNodeInformation(self, conn, timestamp, node_list):
super(PrimaryNotificationsHandler, self).notifyNodeInformation(
conn, timestamp, node_list)
# XXX: 'update' automatically closes DOWN nodes. Do we really want
# XXX: 'update' automatically closes UNKNOWN nodes. Do we really want
# to do the same thing for nodes in other non-running states ?
getByUUID = self.app.nm.getByUUID
for node in node_list:
......@@ -201,7 +154,7 @@ class PrimaryNotificationsHandler(MTEventHandler):
def notifyDeadlock(self, conn, ttid, locking_tid):
for txn_context in self.app.txn_contexts():
if txn_context.ttid == ttid:
txn_context.conflict_dict[None] = locking_tid, None
txn_context.conflict_dict[None] = locking_tid
txn_context.wakeup(conn)
break
......
neo/client/handlers/storage.py
View file @ f873e151
......@@ -42,13 +42,8 @@ class StorageEventHandler(MTEventHandler):
self.app.cp.removeConnection(node)
super(StorageEventHandler, self).connectionFailed(conn)
def _acceptIdentification(self, node,
uuid, num_partitions, num_replicas, your_uuid, primary,
master_list):
assert self.app.master_conn is None or \
primary == self.app.master_conn.getAddress(), (
primary, self.app.master_conn)
assert uuid == node.getUUID(), (uuid, node.getUUID())
def _acceptIdentification(*args):
pass
class StorageBootstrapHandler(AnswerBaseHandler):
""" Handler used when connecting to a storage node """
......@@ -63,7 +58,7 @@ class StorageAnswersHandler(AnswerBaseHandler):
def answerObject(self, conn, oid, *args):
self.app.setHandlerData(args)
def answerStoreObject(self, conn, conflict, oid, serial):
def answerStoreObject(self, conn, conflict, oid):
txn_context = self.app.getHandlerData()
if conflict:
# Conflicts can not be resolved now because 'conn' is locked.
......@@ -80,7 +75,7 @@ class StorageAnswersHandler(AnswerBaseHandler):
# If this conflict is not already resolved, mark it for
# resolution.
if txn_context.resolved_dict.get(oid, '') < conflict:
txn_context.conflict_dict[oid] = serial, conflict
txn_context.conflict_dict[oid] = conflict
else:
txn_context.written(self.app, conn.getUUID(), oid)
......@@ -112,10 +107,10 @@ class StorageAnswersHandler(AnswerBaseHandler):
except KeyError:
if resolved:
# We should still be waiting for an answer from this node.
assert conn.uuid in txn_context.data_dict[oid][1]
assert conn.uuid in txn_context.data_dict[oid][2]
return
assert oid in txn_context.data_dict
if serial <= txn_context.conflict_dict.get(oid, ('',))[0]:
if serial <= txn_context.conflict_dict.get(oid, ''):
# Another node already reported this conflict or a newer,
# by answering to this rebase or to the previous store.
return
......@@ -141,8 +136,8 @@ class StorageAnswersHandler(AnswerBaseHandler):
if cached:
assert cached == data
txn_context.cache_size -= size
txn_context.data_dict[oid] = data, None
txn_context.conflict_dict[oid] = serial, conflict
txn_context.data_dict[oid] = data, serial, None
txn_context.conflict_dict[oid] = conflict
def answerStoreTransaction(self, conn):
pass
......
neo/client/pool.py
View file @ f873e151
......@@ -99,7 +99,6 @@ class ConnectionPool(object):
return conn
def removeConnection(self, node):
"""Explicitly remove connection when a node is broken."""
self.connection_dict.pop(node.getUUID(), None)
def closeAll(self):
......
neo/client/transactions.py
View file @ f873e151
......@@ -40,11 +40,11 @@ class Transaction(object):
self.queue = SimpleQueue()
self.txn = txn
# data being stored
self.data_dict = {} # {oid: (value, [node_id])}
self.data_dict = {} # {oid: (value, serial, [node_id])}
# data stored: this will go to the cache on tpc_finish
self.cache_dict = {} # {oid: value}
# conflicts to resolve
self.conflict_dict = {} # {oid: (base_serial, serial)}
self.conflict_dict = {} # {oid: serial}
# resolved conflicts
self.resolved_dict = {} # {oid: serial}
# Keys are node ids instead of Node objects because a node may
......@@ -98,7 +98,7 @@ class Transaction(object):
# the data in self.data_dict until all nodes have answered so we remain
# able to resolve conflicts.
try:
data, uuid_list = self.data_dict[oid]
data, serial, uuid_list = self.data_dict[oid]
uuid_list.remove(uuid)
except KeyError:
# 1. store to S1 and S2
......
neo/lib/app.py
View file @ f873e151
......@@ -21,6 +21,7 @@ from .node import NodeManager
class BaseApplication(object):
server = None
ssl = None
def __init__(self, ssl=None, dynamic_master_list=None):
......
neo/lib/bootstrap.py
View file @ f873e151
......@@ -15,8 +15,9 @@
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from . import logging
from .exception import PrimaryElected
from .handler import EventHandler
from .protocol import uuid_str, Packets
from .protocol import Packets
from .connection import ClientConnection
......@@ -24,7 +25,6 @@ class BootstrapManager(EventHandler):
"""
Manage the bootstrap stage, lookup for the primary master then connect to it
"""
accepted = False
def __init__(self, app, node_type, server=None):
"""
......@@ -32,85 +32,30 @@ class BootstrapManager(EventHandler):
primary master node, connect to it then returns when the master node
is ready.
"""
self.primary = None
self.server = server
self.node_type = node_type
self.num_replicas = None
self.num_partitions = None
self.current = None
app.nm.reset()
uuid = property(lambda self: self.app.uuid)
def announcePrimary(self, conn):
# We found the primary master early enough to be notified of election
# end. Lucky. Anyway, we must carry on with identification request, so
# nothing to do here.
pass
def connectionCompleted(self, conn):
"""
Triggered when the network connection is successful.
Now ask who's the primary.
"""
EventHandler.connectionCompleted(self, conn)
self.current.setRunning()
conn.ask(Packets.RequestIdentification(self.node_type, self.uuid,
self.server, self.app.name, None))
def connectionFailed(self, conn):
"""
Triggered when the network connection failed.
Restart bootstrap.
"""
EventHandler.connectionFailed(self, conn)
self.current = None
def connectionLost(self, conn, new_state):
"""
Triggered when an established network connection is lost.
Restart bootstrap.
"""
self.current.setTemporarilyDown()
self.current = None
def notReady(self, conn, message):
"""
The primary master send this message when it is still not ready to
handle the client node.
Close connection and restart.
"""
conn.close()
def _acceptIdentification(self, node, uuid, num_partitions,
num_replicas, your_uuid, primary, known_master_list):
nm = self.app.nm
# Register new master nodes.
for address, uuid in known_master_list:
master_node = nm.getByAddress(address)
if master_node is None:
master_node = nm.createMaster(address=address)
master_node.setUUID(uuid)
self.primary = nm.getByAddress(primary)
if self.primary is None or self.current is not self.primary:
# three cases here:
# - something goes wrong (unknown UUID)
# - this master doesn't know who's the primary
# - got the primary's uuid, so cut here
node.getConnection().close()
return
logging.info('connected to a primary master node')
def _acceptIdentification(self, node, num_partitions, num_replicas):
assert self.current is node, (self.current, node)
self.num_partitions = num_partitions
self.num_replicas = num_replicas
if self.uuid != your_uuid:
# got an uuid from the primary master
self.app.uuid = your_uuid
logging.info('Got a new UUID: %s', uuid_str(self.uuid))
self.app.id_timestamp = None
self.accepted = True
def getPrimaryConnection(self):
"""
......@@ -122,25 +67,26 @@ class BootstrapManager(EventHandler):
poll = app.em.poll
index = 0
self.current = None
conn = None
# retry until identified to the primary
while not self.accepted:
if self.current is None:
# conn closed
conn = None
while True:
try:
while self.current:
if self.current.isIdentified():
return (self.current, self.current.getConnection(),
self.num_partitions, self.num_replicas)
poll(1)
except PrimaryElected, e:
if self.current:
self.current.getConnection().close()
self.current, = e.args
index = app.nm.getMasterList().index(self.current)
else:
# select a master
master_list = app.nm.getMasterList()
index = (index + 1) % len(master_list)
self.current = master_list[index]
if conn is None:
# open the connection
conn = ClientConnection(app, self, self.current)
# Yes, the connection may be already closed. This happens when
ClientConnection(app, self, self.current)
# Note that the connection may be already closed. This happens when
# the kernel reacts so quickly to a closed port that 'connect'
# fails on the first call. In such case, poll(1) would deadlock
# if there's no other connection to timeout.
if conn.isClosed():
continue
# still processing
poll(1)
return self.current, conn, self.num_partitions, self.num_replicas
neo/lib/config.py
View file @ f873e151
......@@ -90,9 +90,7 @@ class ConfigurationManager(object):
def getMasters(self):
""" Get the master node list except itself """
masters = self.__get('masters')
# load master node list except itself
return util.parseMasterList(masters, except_node=self.getBind())
return util.parseMasterList(self.__get('masters'))
def getBind(self):
""" Get the address to bind to """
......
neo/lib/connection.py
View file @ f873e151
......@@ -20,8 +20,7 @@ from time import time
from . import attributeTracker, logging
from .connector import ConnectorException, ConnectorDelayedConnection
from .locking import RLock
from .protocol import uuid_str, Errors, \
PacketMalformedError, Packets, ParserState
from .protocol import uuid_str, Errors, PacketMalformedError, Packets
from .util import dummy_read_buffer, ReadBuffer
CRITICAL_TIMEOUT = 30
......@@ -113,7 +112,8 @@ class HandlerSwitcher(object):
self._is_handling = False
def _handle(self, connection, packet): # NOTE incoming packet -> handle -> dispatch ...
assert len(self._pending) == 1 or self._pending[0][0]
pending = self._pending
assert len(pending) == 1 or pending[0][0], pending
logging.packet(connection, packet, False)
if connection.isClosed() and (connection.isAborted() or
packet.ignoreOnClosedConnection()):
......@@ -122,29 +122,30 @@ class HandlerSwitcher(object):
return
if not packet.isResponse(): # notification
# XXX: If there are several handlers, which one to use ?
self._pending[0][1].packetReceived(connection, packet)
pending[0][1].packetReceived(connection, packet)
return
msg_id = packet.getId()
request_dict, handler = self._pending[0]
request_dict, handler = pending[0]
# checkout the expected answer class
try:
klass, _, _, kw = request_dict.pop(msg_id)
except KeyError:
klass = None
kw = {}
try:
if klass and isinstance(packet, klass) or packet.isError():
handler.packetReceived(connection, packet, kw)
else:
logging.error('Unexpected answer %r in %r', packet, connection)
if not connection.isClosed():
notification = Packets.Notify('Unexpected answer: %r' % packet)
connection.send(notification)
connection.answer(Errors.ProtocolError(
'Unexpected answer: %r' % packet))
connection.abort()
# handler.peerBroken(connection)
finally:
# apply a pending handler if no more answers are pending
while len(self._pending) > 1 and not self._pending[0][0]:
del self._pending[0]
logging.debug('Apply handler %r on %r', self._pending[0][1],
while len(pending) > 1 and not pending[0][0]:
del pending[0]
logging.debug('Apply handler %r on %r', pending[0][1],
connection)
if msg_id == self._next_timeout_msg_id:
self._updateNextTimeout()
......@@ -258,10 +259,12 @@ class BaseConnection(object):
)
def setHandler(self, handler):
if self._handlers.setHandler(handler):
logging.debug('Set handler %r on %r', handler, self)
changed = self._handlers.setHandler(handler)
if changed:
logging.debug('Handler changed on %r', self)
else:
logging.debug('Delay handler %r on %r', handler, self)
return changed
def getUUID(self):
return None
......@@ -315,9 +318,11 @@ class ListeningConnection(BaseConnection):
if self._ssl:
conn.connecting = True
connector.ssl(self._ssl, conn._connected)
self.em.addWriter(conn)
# Nothing to send as long as we haven't received a ClientHello
# message.
else:
conn._connected()
self.em.addWriter(conn) # for ENCODED_VERSION
def getAddress(self):
return self.connector.getAddress()
......@@ -336,6 +341,7 @@ class Connection(BaseConnection):
server = False
peer_id = None
_next_timeout = None
_parser_state = None
_timeout = 0
def __init__(self, event_manager, *args, **kw):
......@@ -347,7 +353,6 @@ class Connection(BaseConnection):
self.uuid = None
self._queue = []
self._on_close = None
self._parser_state = ParserState()
def _getReprInfo(self):
r, flags = super(Connection, self)._getReprInfo()
......@@ -466,20 +471,59 @@ class Connection(BaseConnection):
except ConnectorException:
self._closure()
def _parse(self):
read = self.read_buf.read
version = read(4)
if version is None:
return
from .protocol import (ENCODED_VERSION, MAX_PACKET_SIZE,
PACKET_HEADER_FORMAT, Packets)
if version != ENCODED_VERSION:
logging.warning('Protocol version mismatch with %r', self)
raise ConnectorException
header_size = PACKET_HEADER_FORMAT.size
unpack = PACKET_HEADER_FORMAT.unpack
def parse():
state = self._parser_state
if state is None:
header = read(header_size)
if header is None:
return
msg_id, msg_type, msg_len = unpack(header)
try:
packet_klass = Packets[msg_type]
except KeyError:
raise PacketMalformedError('Unknown packet type')
if msg_len > MAX_PACKET_SIZE:
raise PacketMalformedError('message too big (%d)' % msg_len)
else:
msg_id, packet_klass, msg_len = state
data = read(msg_len)
if data is None:
# Not enough.
if state is None:
self._parser_state = msg_id, packet_klass, msg_len
else:
self._parser_state = None
packet = packet_klass()
packet.setContent(msg_id, data)
return packet
self._parse = parse
return parse()
def readable(self):
"""Called when self is readable."""
# last known remote activity
self._next_timeout = time() + self._timeout
read_buf = self.read_buf
try:
try:
if self.connector.receive(read_buf):
if self.connector.receive(self.read_buf):
self.em.addWriter(self)
finally:
# A connector may read some data
# before raising ConnectorException
while 1:
packet = Packets.parse(read_buf, self._parser_state)
packet = self._parse()
if packet is None:
break
self._queue.append(packet)
......@@ -501,7 +545,9 @@ class Connection(BaseConnection):
Process a pending packet.
"""
# check out packet and process it with current handler
try:
self._handlers.handle(self, self._queue.pop(0))
finally:
self.updateTimeout()
def pending(self):
......@@ -625,9 +671,7 @@ class ClientConnection(Connection):
self.em.register(self)
if connected:
self._maybeConnected()
# A client connection usually has a pending packet to send
# from the beginning. It would be too smart to detect when
# it's not required to poll for writing.
# There's always the protocol version to send.
self.em.addWriter(self)
def _delayedConnect(self):
......
neo/lib/connector.py
View file @ f873e151
......@@ -19,6 +19,7 @@ import ssl
import errno
from time import time
from . import logging
from .protocol import ENCODED_VERSION
# Global connector registry.
# Fill by calling registerConnectorHandler.
......@@ -58,7 +59,7 @@ class SocketConnector(object):
s.setblocking(0)
# disable Nagle algorithm to reduce latency
s.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
self.queued = []
self.queued = [ENCODED_VERSION]
return self
def queue(self, data):
......@@ -66,7 +67,10 @@ class SocketConnector(object):
self.queued += data
return was_empty
def _error(self, op, exc):
def _error(self, op, exc=None):
if exc is None:
logging.debug('%r closed in %s', self, op)
else:
logging.debug("%s failed for %s: %s (%s)",
op, self, errno.errorcode[exc.errno], exc.strerror)
raise ConnectorException
......@@ -151,8 +155,7 @@ class SocketConnector(object):
if data:
read_buf.append(data)
return
logging.debug('%r closed in recv', self)
raise ConnectorException
self._error('recv')
def send(self):
# XXX: unefficient for big packets
......@@ -240,10 +243,12 @@ def overlay_connector_class(cls):
@overlay_connector_class
class _SSL:
def _error(self, op, exc):
def _error(self, op, exc=None):
if isinstance(exc, ssl.SSLError):
if not isinstance(exc, ssl.SSLEOFError):
logging.debug("%s failed for %s: %s", op, self, exc)
raise ConnectorException
exc = None
SocketConnector._error(self, op, exc)
def receive(self, read_buf):
......@@ -258,7 +263,27 @@ class _SSL:
@overlay_connector_class
class _SSLHandshake(_SSL):
def receive(self, read_buf=None):
# WKRD: Unfortunately, SSL_do_handshake(3SSL) does not try to reject
# non-SSL connections as soon as possible, by checking the first
# byte. It even does nothing before receiving a full TLSPlaintext
# frame (5 bytes).
# The NEO protocol is such that a client connection is always the
# first to send a packet, as soon as the connection is established,
# and without waiting that the protocol versions are checked.
# So in practice, non-SSL connection to SSL would never hang, but
# there's another issue: such case results in WRONG_VERSION_NUMBER
# instead of something like UNEXPECTED_RECORD, because the SSL
# version is checked first.
# For better logging, we try to detect non-SSL connections with
# MSG_PEEK. This only works reliably on server side.
# For SSL client connections, 2 things may prevent the workaround to
# log that the remote node has not enabled SSL:
# - non-SSL data received (or connection closed) before the first
# call to 'recv' in 'do_handshake'
# - the server connection detects a wrong protocol version before it
# sent its one
def _handshake(self, read_buf=None):
# ???Writer | send | receive
# -----------+--------+--------
# want read | remove | -
......@@ -270,9 +295,10 @@ class _SSLHandshake(_SSL):
except ssl.SSLWantWriteError:
return read_buf is not None
except socket.error, e:
self._error('SSL handshake', e)
self._error('send' if read_buf is None else 'recv', e)
if not self.queued[0]:
del self.queued[0]
del self.receive, self.send
self.__class__ = self.SSLConnectorClass
cipher, proto, bits = self.socket.cipher()
logging.debug("SSL handshake done for %s: %s %s", self, cipher, bits)
......@@ -284,7 +310,21 @@ class _SSLHandshake(_SSL):
self.receive(read_buf)
return self.queued
send = receive
def send(self, read_buf=None):
handshake = self.receive = self.send = self._handshake
return handshake(read_buf)
def receive(self, read_buf):
try:
content_type = self.socket._sock.recv(1, socket.MSG_PEEK)
except socket.error, e:
self._error('recv', e)
if content_type == '\26': # handshake
return self.send(read_buf)
if content_type:
logging.debug('Rejecting non-SSL %r', self)
raise ConnectorException
self._error('recv')
class ConnectorException(Exception):
......
neo/lib/exception.py
View file @ f873e151
......@@ -17,7 +17,7 @@
class NeoException(Exception):
pass
class ElectionFailure(NeoException):
class PrimaryElected(NeoException):
pass
class PrimaryFailure(NeoException):
......
neo/lib/handler.py
View file @ f873e151
......@@ -19,9 +19,9 @@ from collections import deque
from operator import itemgetter
from . import logging
from .connection import ConnectionClosed
from .protocol import (
NodeStates, Packets, Errors, BackendNotImplemented,
BrokenNodeDisallowedError, NonReadableCell, NotReadyError,
from .exception import PrimaryElected
from .protocol import (NodeStates, NodeTypes, Packets, uuid_str,
Errors, BackendNotImplemented, NonReadableCell, NotReadyError,
PacketMalformedError, ProtocolError, UnexpectedPacketError)
from .util import cached_property
......@@ -59,7 +59,6 @@ class EventHandler(object):
logging.error(message)
conn.answer(Errors.ProtocolError(message))
conn.abort()
# self.peerBroken(conn)
def dispatch(self, conn, packet, kw={}):
"""This is a helper method to handle various packet types."""
......@@ -80,11 +79,6 @@ class EventHandler(object):
except PacketMalformedError, e:
logging.error('malformed packet from %r: %s', conn, e)
conn.close()
# self.peerBroken(conn)
except BrokenNodeDisallowedError:
if not conn.isClosed():
conn.answer(Errors.BrokenNode('go away'))
conn.abort()
except NotReadyError, message:
if not conn.isClosed():
if not message.args:
......@@ -144,12 +138,7 @@ class EventHandler(object):
def connectionClosed(self, conn):
"""Called when a connection is closed by the peer."""
logging.debug('connection closed for %r', conn)
self.connectionLost(conn, NodeStates.TEMPORARILY_DOWN)
#def peerBroken(self, conn):
# """Called when a peer is broken."""
# logging.error('%r is broken', conn)
# # NodeStates.BROKEN
self.connectionLost(conn, NodeStates.DOWN)
def connectionLost(self, conn, new_state):
""" this is a method to override in sub-handlers when there is no need
......@@ -159,21 +148,41 @@ class EventHandler(object):
# Packet handlers.
def acceptIdentification(self, conn, node_type, *args):
try:
acceptIdentification = self._acceptIdentification
except AttributeError:
raise UnexpectedPacketError('no handler found')
if conn.isClosed():
# acceptIdentification received on a closed (probably aborted,
# actually) connection. Reject any further packet as unexpected.
conn.setHandler(EventHandler(self.app))
return
node = self.app.nm.getByAddress(conn.getAddress())
def notPrimaryMaster(self, conn, primary, known_master_list):
nm = self.app.nm
for address in known_master_list:
nm.createMaster(address=address)
if primary is not None:
primary = known_master_list[primary]
assert primary != self.app.server
raise PrimaryElected(nm.getByAddress(primary))
def _acceptIdentification(*args):
pass
def acceptIdentification(self, conn, node_type, uuid,
num_partitions, num_replicas, your_uuid):
app = self.app
node = app.nm.getByAddress(conn.getAddress())
assert node.getConnection() is conn, (node.getConnection(), conn)
if node.getType() == node_type:
if node_type == NodeTypes.MASTER:
other = app.nm.getByUUID(uuid)
if other is not None:
other.setUUID(None)
node.setUUID(uuid)
node.setRunning()
if your_uuid is None:
raise ProtocolError('No UUID supplied')
logging.info('connected to a primary master node')
if app.uuid != your_uuid:
app.uuid = your_uuid
logging.info('Got a new UUID: %s', uuid_str(your_uuid))
app.id_timestamp = None
elif node.getUUID() != uuid or app.uuid != your_uuid != None:
raise ProtocolError('invalid uuids')
node.setIdentified()
acceptIdentification(node, *args)
self._acceptIdentification(node, num_partitions, num_replicas)
return
conn.close()
......@@ -189,9 +198,6 @@ class EventHandler(object):
# to test/maintain underlying connection.
pass
def notify(self, conn, message):
logging.warning('notification from %r: %s', conn, message)
def closeClient(self, conn):
conn.server = False
if not conn.client:
......@@ -216,9 +222,6 @@ class EventHandler(object):
def timeoutError(self, conn, message):
logging.error('timeout error: %s', message)
def brokenNodeDisallowedError(self, conn, message):
raise RuntimeError, 'broken node disallowed error: %s' % (message,)
def ack(self, conn, message):
logging.debug("no error message: %s", message)
......@@ -268,7 +271,6 @@ class AnswerBaseHandler(EventHandler):
timeoutExpired = unexpectedInAnswerHandler
connectionClosed = unexpectedInAnswerHandler
packetReceived = unexpectedInAnswerHandler
peerBroken = unexpectedInAnswerHandler
protocolError = unexpectedInAnswerHandler
def acceptIdentification(*args):
......@@ -318,6 +320,10 @@ class EventQueue(object):
self._event_queue = []
self._executing_event = -1
# Stable sort when 2 keys are equal.
# XXX: Is it really useful to keep events with same key ordered
# chronologically ? The caller could use more specific keys. For
# write-locks (by the storage node), the locking tid seems enough.
sortQueuedEvents = (lambda key=itemgetter(0): lambda self:
self._event_queue.sort(key=key))()
......
neo/lib/node.py
View file @ f873e151
......@@ -14,9 +14,8 @@
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import errno, json, os
from time import time
from os.path import exists, getsize
import json
from . import attributeTracker, logging
from .handler import DelayEvent, EventQueue
......@@ -31,8 +30,7 @@ class Node(object):
_identified = False
id_timestamp = None
def __init__(self, manager, address=None, uuid=None,
state=NodeStates.UNKNOWN):
def __init__(self, manager, address=None, uuid=None, state=NodeStates.DOWN):
self._state = state
self._address = address
self._uuid = uuid
......@@ -64,7 +62,7 @@ class Node(object):
def setState(self, new_state):
if self._state == new_state:
return
if new_state == NodeStates.DOWN:
if new_state == NodeStates.UNKNOWN:
self._manager.remove(self)
self._state = new_state
else:
......@@ -205,34 +203,51 @@ class MasterDB(object):
"""
def __init__(self, path):
self._path = path
try_load = exists(path) and getsize(path)
if try_load:
db = open(path, 'r')
init_set = map(tuple, json.load(db))
else:
db = open(path, 'w+')
init_set = []
self._set = set(init_set)
db.close()
def _save(self):
try:
db = open(self._path, 'w')
except IOError:
logging.warning('failed opening master database at %r '
'for writing, update skipped', self._path)
else:
with open(path) as db:
self._set = set(map(tuple, json.load(db)))
except IOError, e:
if e.errno != errno.ENOENT:
raise
self._set = set()
self._save(True)
def _save(self, raise_on_error=False):
tmp = self._path + '#neo#'
try:
with open(tmp, 'w') as db:
json.dump(list(self._set), db)
db.close()
os.rename(tmp, self._path)
except EnvironmentError:
if raise_on_error:
raise
logging.exception('failed saving list of master nodes to %r',
self._path)
finally:
try:
os.remove(tmp)
except OSError:
pass
def add(self, addr):
self._set.add(addr)
def remove(self, addr):
if addr in self._set:
self._set.remove(addr)
self._save()
def discard(self, addr):
self._set.discard(addr)
def addremove(self, old, new):
assert old != new
if None is not new not in self._set:
self._set.add(new)
elif old not in self._set:
return
self._set.discard(old)
self._save()
def __repr__(self):
return '<%s@%s: %s>' % (self.__class__.__name__, self._path,
', '.join(sorted(('[%s]:%s' if ':' in x[0] else '%s:%s') % x
for x in self._set)))
def __iter__(self):
return iter(self._set)
......@@ -271,19 +286,14 @@ class NodeManager(EventQueue):
if node in self._node_set:
logging.warning('adding a known node %r, ignoring', node)
return
assert not node.isDown(), node
assert not node.isUnknown(), node
self._node_set.add(node)
self._updateAddress(node, None)
self._updateUUID(node, None)
self.__updateSet(self._type_dict, None, node.getType(), node)
self.__updateSet(self._state_dict, None, node.getState(), node)
if node.isMaster() and self._master_db is not None:
self._master_db.add(node.getAddress())
def remove(self, node):
if node not in self._node_set:
logging.warning('removing unknown node %r, ignoring', node)
return
self._node_set.remove(node)
# a node may have not be indexed by uuid or address, eg.:
# - a client or admin node that don't have listening address
......@@ -292,9 +302,8 @@ class NodeManager(EventQueue):
self._uuid_dict.pop(node.getUUID(), None)
self._state_dict[node.getState()].remove(node)
self._type_dict[node.getType()].remove(node)
uuid = node.getUUID()
if node.isMaster() and self._master_db is not None:
self._master_db.discard(node.getAddress())
self._master_db.remove(node.getAddress())
def __update(self, index_dict, old_key, new_key, node):
""" Update an index from old to new key """
......@@ -309,7 +318,10 @@ class NodeManager(EventQueue):
index_dict[new_key] = node
def _updateAddress(self, node, old_address):
self.__update(self._address_dict, old_address, node.getAddress(), node)
address = node.getAddress()
self.__update(self._address_dict, old_address, address, node)
if node.isMaster() and self._master_db is not None:
self._master_db.addremove(old_address, address)
def _updateUUID(self, node, old_uuid):
self.__update(self._uuid_dict, old_uuid, node.getUUID(), node)
......@@ -321,7 +333,7 @@ class NodeManager(EventQueue):
set_dict.setdefault(new_key, set()).add(node)
def _updateState(self, node, old_state):
assert not node.isDown(), node
assert not node.isUnknown(), node
self.__updateSet(self._state_dict, old_state, node.getState(), node)
def getList(self, node_filter=None):
......@@ -414,7 +426,7 @@ class NodeManager(EventQueue):
def update(self, app, timestamp, node_list):
assert self._timestamp < timestamp, (self._timestamp, timestamp)
self._timestamp = timestamp
node_set = self._node_set.copy() if app.id_timestamp is None else None
added_list = [] if app.id_timestamp is None else None
for node_type, addr, uuid, state, id_timestamp in node_list:
# This should be done here (although klass might not be used in this
# iteration), as it raises if type is not valid.
......@@ -423,24 +435,23 @@ class NodeManager(EventQueue):
# lookup in current table
node_by_uuid = self.getByUUID(uuid)
node_by_addr = self.getByAddress(addr)
node = node_by_uuid or node_by_addr
node = node_by_addr or node_by_uuid
log_args = node_type, uuid_str(uuid), addr, state, id_timestamp
if node is None:
if state == NodeStates.DOWN:
logging.debug('NOT creating node %s %s %s %s %s', *log_args)
continue
assert state != NodeStates.UNKNOWN, (self._node_set,) + log_args
node = self._createNode(klass, address=addr, uuid=uuid,
state=state)
logging.debug('creating node %r', node)
else:
assert isinstance(node, klass), 'node %r is not ' \
'of expected type: %r' % (node, klass)
assert None in (node_by_uuid, node_by_addr) or \
node_by_uuid is node_by_addr, \
if None is not node_by_uuid is not node_by_addr is not None:
assert added_list is not None, \
'Discrepancy between node_by_uuid (%r) and ' \
'node_by_addr (%r)' % (node_by_uuid, node_by_addr)
if state == NodeStates.DOWN:
node_by_uuid.setUUID(None)
if state == NodeStates.UNKNOWN:
logging.debug('dropping node %r (%r), found with %s '
'%s %s %s %s', node, node.isConnected(), *log_args)
if node.isConnected():
......@@ -451,8 +462,9 @@ class NodeManager(EventQueue):
# reconnect to the master because they cleared their
# partition table upon disconnection.
node.getConnection().close()
if app.uuid != uuid:
app.pt.dropNode(node)
if app.uuid != uuid: # XXX
dropped = app.pt.dropNode(node)
assert dropped, node
self.remove(node)
continue
logging.debug('updating node %r to %s %s %s %s %s',
......@@ -463,11 +475,14 @@ class NodeManager(EventQueue):
node.id_timestamp = id_timestamp
if app.uuid == uuid:
app.id_timestamp = id_timestamp
if node_set:
if added_list is not None:
added_list.append(node)
if added_list is not None:
assert app.id_timestamp is not None
# For the first notification, we receive a full list of nodes from
# the master. Remove all unknown nodes from a previous connection.
for node in node_set - self._node_set:
app.pt.dropNode(node)
for node in self._node_set.difference(added_list):
if app.pt.dropNode(node):
self.remove(node)
self.log()
self.executeQueuedEvents()
......
neo/lib/protocol.py
View file @ f873e151
......@@ -14,24 +14,21 @@
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import socket
import sys
import traceback
from cStringIO import StringIO
from struct import Struct
PROTOCOL_VERSION = 12
# The protocol version must be increased whenever upgrading a node may require
# to upgrade other nodes. It is encoded as a 4-bytes big-endian integer and
# the high order byte 0 is different from TLS Handshake (0x16).
PROTOCOL_VERSION = 1
ENCODED_VERSION = Struct('!L').pack(PROTOCOL_VERSION)
# Size restrictions.
MIN_PACKET_SIZE = 10
# Avoid memory errors on corrupted data.
MAX_PACKET_SIZE = 0x4000000
PACKET_HEADER_FORMAT = Struct('!LHL')
# Check that header size is the expected value.
# If it is not, it means that struct module result is incompatible with
# "reference" platform (python 2.4 on x86-64).
assert PACKET_HEADER_FORMAT.size == 10, \
'Unsupported platform, packet header length = %i' % \
(PACKET_HEADER_FORMAT.size, )
RESPONSE_MASK = 0x8000
class Enum(tuple):
......@@ -70,7 +67,6 @@ def ErrorCodes():
TID_NOT_FOUND
OID_DOES_NOT_EXIST
PROTOCOL_ERROR
BROKEN_NODE
REPLICATION_ERROR
CHECKING_ERROR
BACKEND_NOT_IMPLEMENTED
......@@ -119,13 +115,10 @@ def NodeTypes():
@Enum
def NodeStates():
RUNNING
TEMPORARILY_DOWN
UNKNOWN
DOWN
BROKEN
HIDDEN
RUNNING
PENDING
UNKNOWN
@Enum
def CellStates():
......@@ -149,12 +142,9 @@ def CellStates():
# used for logging
node_state_prefix_dict = {
NodeStates.RUNNING: 'R',
NodeStates.TEMPORARILY_DOWN: 'T',
NodeStates.DOWN: 'D',
NodeStates.BROKEN: 'B',
NodeStates.HIDDEN: 'H',
NodeStates.PENDING: 'P',
NodeStates.UNKNOWN: 'U',
NodeStates.PENDING: 'P',
}
# used for logging
......@@ -167,16 +157,12 @@ cell_state_prefix_dict = {
}
# Other constants.
INVALID_UUID = 0
INVALID_TID = '\xff' * 8
INVALID_TID = \
INVALID_OID = '\xff' * 8
INVALID_PARTITION = 0xffffffff
INVALID_ADDRESS_TYPE = socket.AF_UNSPEC
ZERO_HASH = '\0' * 20
ZERO_TID = '\0' * 8
ZERO_TID = \
ZERO_OID = '\0' * 8
OID_LEN = len(INVALID_OID)
TID_LEN = len(INVALID_TID)
MAX_TID = '\x7f' + '\xff' * 7 # SQLite does not accept numbers above 2^63-1
# High-order byte:
......@@ -203,17 +189,14 @@ class ProtocolError(Exception):
""" Base class for protocol errors, close the connection """
class PacketMalformedError(ProtocolError):
""" Close the connection and set the node as broken"""
"""Close the connection"""
class UnexpectedPacketError(ProtocolError):
""" Close the connection and set the node as broken"""
"""Close the connection"""
class NotReadyError(ProtocolError):
""" Just close the connection """
class BrokenNodeDisallowedError(ProtocolError):
""" Just close the connection """
class BackendNotImplemented(Exception):
""" Method not implemented by backend storage """
......@@ -279,8 +262,8 @@ class Packet(object):
def encode(self):
""" Encode a packet as a string to send it over the network """
content = self._body
length = PACKET_HEADER_FORMAT.size + len(content)
return (PACKET_HEADER_FORMAT.pack(self._id, self._code, length), content)
return (PACKET_HEADER_FORMAT.pack(self._id, self._code, len(content)),
content)
def __len__(self):
return PACKET_HEADER_FORMAT.size + len(self._body)
......@@ -562,19 +545,6 @@ class PPTID(PStructItemOrNone):
_fmt = '!Q'
_None = Struct(_fmt).pack(0)
class PProtocol(PNumber):
"""
The protocol version definition
"""
def _encode(self, writer, version):
writer(self.pack(version))
def _decode(self, reader):
version = self.unpack(reader(self.size))
if version != (PROTOCOL_VERSION,):
raise ProtocolError('protocol version mismatch')
return version
class PChecksum(PItem):
"""
A hash (SHA1)
......@@ -586,12 +556,14 @@ class PChecksum(PItem):
def _decode(self, reader):
return reader(20)
class PUUID(PStructItemOrNone):
class PSignedNull(PStructItemOrNone):
_fmt = '!l'
_None = Struct(_fmt).pack(0)
class PUUID(PSignedNull):
"""
An UUID (node identifier, 4-bytes signed integer)
"""
_fmt = '!l'
_None = Struct(_fmt).pack(0)
class PTID(PItem):
"""
......@@ -671,14 +643,6 @@ PFOidList = PList('oid_list',
# packets definition
class Notify(Packet):
"""
General purpose notification (remote logging)
"""
_fmt = PStruct('notify',
PString('message'),
)
class Error(Packet):
"""
Error is a special type of message, because this can be sent against
......@@ -709,7 +673,6 @@ class RequestIdentification(Packet):
poll_thread = True
_fmt = PStruct('request_identification',
PProtocol('protocol_version'),
PFNodeType,
PUUID('uuid'),
PAddress('address'),
......@@ -723,25 +686,8 @@ class RequestIdentification(Packet):
PNumber('num_partitions'),
PNumber('num_replicas'),
PUUID('your_uuid'),
PAddress('primary'),
PList('known_master_list',
PStruct('master',
PAddress('address'),
PUUID('uuid'),
),
),
)
def __init__(self, *args, **kw):
if args or kw:
# always announce current protocol version
args = list(args)
args.insert(0, PROTOCOL_VERSION)
super(RequestIdentification, self).__init__(*args, **kw)
def decode(self):
return super(RequestIdentification, self).decode()[1:]
class PrimaryMaster(Packet):
"""
Ask current primary master's uuid. CTL -> A.
......@@ -750,15 +696,16 @@ class PrimaryMaster(Packet):
PUUID('primary_uuid'),
)
class AnnouncePrimary(Packet):
class NotPrimaryMaster(Packet):
"""
Announce a primary master node election. PM -> SM.
"""
class ReelectPrimary(Packet):
"""
Force a re-election of a primary master node. M -> M.
Send list of known master nodes. SM -> Any.
"""
_fmt = PStruct('not_primary_master',
PSignedNull('primary'),
PList('known_master_list',
PAddress('address'),
),
)
class Recovery(Packet):
"""
......@@ -1620,22 +1567,6 @@ def register(request, ignore_when_closed=None):
StaticRegistry[code] = answer
return (request, answer)
class ParserState(object):
"""
Parser internal state.
To be considered opaque datatype outside of PacketRegistry.parse .
"""
payload = None
def set(self, payload):
self.payload = payload
def get(self):
return self.payload
def clear(self):
self.payload = None
class Packets(dict):
"""
Packet registry that checks packet code uniqueness and provides an index
......@@ -1647,58 +1578,19 @@ class Packets(dict):
# this builds a "singleton"
return type('PacketRegistry', base, d)(StaticRegistry)
def parse(self, buf, state_container):
state = state_container.get()
if state is None:
header = buf.read(PACKET_HEADER_FORMAT.size)
if header is None:
return None
msg_id, msg_type, msg_len = PACKET_HEADER_FORMAT.unpack(header)
try:
packet_klass = self[msg_type]
except KeyError:
raise PacketMalformedError('Unknown packet type')
if msg_len > MAX_PACKET_SIZE:
raise PacketMalformedError('message too big (%d)' % msg_len)
if msg_len < MIN_PACKET_SIZE:
raise PacketMalformedError('message too small (%d)' % msg_len)
msg_len -= PACKET_HEADER_FORMAT.size
else:
msg_id, packet_klass, msg_len = state
data = buf.read(msg_len)
if data is None:
# Not enough.
if state is None:
state_container.set((msg_id, packet_klass, msg_len))
return None
if state:
state_container.clear()
packet = packet_klass()
packet.setContent(msg_id, data)
return packet
# notifications
Error = register(
Error)
RequestIdentification, AcceptIdentification = register(
RequestIdentification)
# Code of RequestIdentification packet must never change so that 2
# incompatible nodes can reject themselves gracefully (i.e. comparing
# protocol versions) instead of raising PacketMalformedError.
assert RequestIdentification._code == 1
RequestIdentification, ignore_when_closed=True)
Ping, Pong = register(
Ping)
CloseClient = register(
CloseClient)
Notify = register(
Notify)
AskPrimary, AnswerPrimary = register(
PrimaryMaster)
AnnouncePrimary = register(
AnnouncePrimary)
ReelectPrimary = register(
ReelectPrimary)
NotPrimaryMaster = register(
NotPrimaryMaster)
NotifyNodeInformation = register(
NotifyNodeInformation)
AskRecovery, AnswerRecovery = register(
......
neo/lib/pt.py
View file @ f873e151
......@@ -168,7 +168,7 @@ class PartitionTable(object):
def _setCell(self, offset, node, state):
if state == CellStates.DISCARDED:
return self.removeCell(offset, node)
if node.isBroken() or node.isDown():
if node.isUnknown():
raise PartitionTableException('Invalid node state')
self.count_dict.setdefault(node, 0)
......@@ -196,8 +196,10 @@ class PartitionTable(object):
break
def dropNode(self, node):
count = self.count_dict.pop(node, None)
assert not count, (node, count)
count = self.count_dict.get(node)
if count == 0:
del self.count_dict[node]
return not count
def load(self, ptid, row_list, nm):
"""
......
neo/lib/util.py
View file @ f873e151
......@@ -148,14 +148,9 @@ def parseNodeAddress(address, port_opt=None):
# or return either raw host & port or getaddrinfo return value.
return socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM)[0][4][:2]
def parseMasterList(masters, except_node=None):
def parseMasterList(masters):
assert masters, 'At least one master must be defined'
master_node_list = []
for node in masters.split():
address = parseNodeAddress(node)
if address != except_node:
master_node_list.append(address)
return master_node_list
return map(parseNodeAddress, masters.split())
class ReadBuffer(object):
......
neo/master/app.py
View file @ f873e151
......@@ -14,7 +14,7 @@
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import sys, weakref
import sys
from collections import defaultdict
from time import time
......@@ -25,7 +25,7 @@ from neo.lib.protocol import uuid_str, UUID_NAMESPACES, ZERO_TID
from neo.lib.protocol import ClusterStates, NodeStates, NodeTypes, Packets
from neo.lib.handler import EventHandler
from neo.lib.connection import ListeningConnection, ClientConnection
from neo.lib.exception import ElectionFailure, PrimaryFailure, StoppedOperation
from neo.lib.exception import PrimaryElected, PrimaryFailure, StoppedOperation
class StateChangedException(Exception): pass
......@@ -40,8 +40,7 @@ def monotonic_time():
return now
from .backup_app import BackupApplication
from .handlers import election, identification, secondary
from .handlers import administration, client, storage
from .handlers import identification, administration, client, master, storage
from .pt import PartitionTable
from .recovery import RecoveryManager
from .transactions import TransactionManager
......@@ -58,6 +57,21 @@ class Application(BaseApplication):
backup_app = None
truncate_tid = None
def uuid(self, uuid):
node = self.nm.getByUUID(uuid)
if node is not self._node:
if node:
node.setUUID(None)
if node.isConnected(True):
node.getConnection().close()
self._node.setUUID(uuid)
uuid = property(lambda self: self._node.getUUID(), uuid)
@property
def election(self):
if self.primary and self.cluster_state == ClusterStates.RECOVERING:
return self.primary
def __init__(self, config):
super(Application, self).__init__(
config.getSSL(), config.getDynamicMasterList())
......@@ -71,6 +85,8 @@ class Application(BaseApplication):
self.storage_starting_set = set()
for master_address in config.getMasters():
self.nm.createMaster(address=master_address)
self._node = self.nm.createMaster(address=self.server,
uuid=config.getUUID())
logging.debug('IP address is %s, port is %d', *self.server)
......@@ -87,17 +103,7 @@ class Application(BaseApplication):
logging.info('Name : %s', self.name)
self.listening_conn = None
self.primary = None
self.primary_master_node = None
self.cluster_state = None
self.uuid = config.getUUID()
# election related data
self.unconnected_master_node_set = set()
self.negotiating_master_node_set = set()
self.master_address_dict = weakref.WeakKeyDictionary()
self._current_manager = None
# backup
......@@ -111,7 +117,8 @@ class Application(BaseApplication):
self.administration_handler = administration.AdministrationHandler(
self)
self.secondary_master_handler = secondary.SecondaryMasterHandler(self)
self.election_handler = master.ElectionHandler(self)
self.secondary_handler = master.SecondaryHandler(self)
self.client_service_handler = client.ClientServiceHandler(self)
self.client_ro_service_handler = client.ClientReadOnlyServiceHandler(self)
self.storage_service_handler = storage.StorageServiceHandler(self)
......@@ -143,100 +150,12 @@ class Application(BaseApplication):
raise
def _run(self):
"""Make sure that the status is sane and start a loop."""
# Make a listening port.
self.listening_conn = ListeningConnection(self, None, self.server)
# Start a normal operation.
while self.cluster_state != ClusterStates.STOPPING:
# (Re)elect a new primary master.
self.primary = not self.nm.getMasterList()
if not self.primary:
self.electPrimary()
try:
if self.primary:
while True:
self.playPrimaryRole()
else:
self.playSecondaryRole()
raise RuntimeError, 'should not reach here'
except (ElectionFailure, PrimaryFailure):
# Forget all connections.
for conn in self.em.getClientList():
conn.close()
def electPrimary(self):
"""Elect a primary master node.
The difficulty is that a master node must accept connections from
others while attempting to connect to other master nodes at the
same time. Note that storage nodes and client nodes may connect
to self as well as master nodes."""
logging.info('begin the election of a primary master')
client_handler = election.ClientElectionHandler(self)
self.unconnected_master_node_set.clear()
self.negotiating_master_node_set.clear()
self.master_address_dict.clear()
self.listening_conn.setHandler(election.ServerElectionHandler(self))
getByAddress = self.nm.getByAddress
while True:
# handle new connected masters
for node in self.nm.getMasterList():
node.setUnknown()
self.unconnected_master_node_set.add(node.getAddress())
# start the election process
self.primary = None
self.primary_master_node = None
try:
while (self.unconnected_master_node_set or
self.negotiating_master_node_set):
for addr in self.unconnected_master_node_set:
self.negotiating_master_node_set.add(addr)
ClientConnection(self, client_handler,
# XXX: Ugly, but the whole election code will be
# replaced soon
getByAddress(addr))
self.unconnected_master_node_set.clear()
self.em.poll(1)
except ElectionFailure, m:
# something goes wrong, clean then restart
logging.error('election failed: %s', m)
# Ask all connected nodes to reelect a single primary master.
for conn in self.em.getClientList():
conn.send(Packets.ReelectPrimary())
conn.abort()
# Wait until the connections are closed.
self.primary = None
self.primary_master_node = None
# XXX: Since poll does not wake up anymore every second,
# the following time condition should be reviewed.
# See also playSecondaryRole.
t = time() + 10
while self.em.getClientList() and time() < t:
try:
self.em.poll(1)
except ElectionFailure:
pass
# Close all connections.
for conn in self.em.getClientList() + self.em.getServerList():
conn.close()
else:
# election succeed, stop the process
self.primary = self.primary is None
break
def broadcastNodesInformation(self, node_list, exclude=None):
"""
Broadcast changes for a set a nodes
Send only one packet per connection to reduce bandwidth
"""
def getNodeInformationDict(self, node_list):
node_dict = defaultdict(list)
# group modified nodes by destination node type
for node in node_list:
......@@ -251,7 +170,14 @@ class Application(BaseApplication):
if node.isStorage():
continue
node_dict[NodeTypes.MASTER].append(node_info)
return node_dict
def broadcastNodesInformation(self, node_list, exclude=None):
"""
Broadcast changes for a set a nodes
Send only one packet per connection to reduce bandwidth
"""
node_dict = self.getNodeInformationDict(node_list)
now = monotonic_time()
# send at most one non-empty notification packet per node
for node in self.nm.getIdentifiedList():
......@@ -302,52 +228,26 @@ class Application(BaseApplication):
def playPrimaryRole(self):
logging.info('play the primary role with %r', self.listening_conn)
self.master_address_dict.clear()
em = self.em
packet = Packets.AnnouncePrimary()
for conn in em.getConnectionList():
self.primary_master = None
for conn in self.em.getConnectionList():
if conn.isListening():
conn.setHandler(identification.IdentificationHandler(self))
else:
conn.send(packet)
# Primary master should rather establish connections to all
# secondaries, rather than the other way around. This requires
# a bit more work when a new master joins a cluster but makes
# it easier to resolve UUID conflicts with minimal cluster
# impact, and ensure primary master uniqueness (primary masters
# become noisy, in that they actively try to maintain
# connections to all other master nodes, so duplicate
# primaries will eventually get in touch with each other and
# resolve the situation with a duel).
# TODO: only abort client connections, don't close server
# connections as we want to have them in the end. Secondary
# masters will reconnect nevertheless, but it's dirty.
# Currently, it's not trivial to preserve connected nodes,
# because of poor node status tracking during election.
# XXX: The above comment is partially wrong in that the primary
# master is now responsible of allocating node ids, and all
# other nodes must only create/update/remove nodes when
# processing node notification. We probably want to keep the
# current behaviour: having only server connections.
conn.abort()
conn.close()
# If I know any storage node, make sure that they are not in the
# running state, because they are not connected at this stage.
for node in self.nm.getStorageList():
if node.isRunning():
node.setTemporarilyDown()
assert node.isDown(), node
if self.uuid is None:
self.uuid = self.getNewUUID(None, self.server, NodeTypes.MASTER)
logging.info('My UUID: ' + uuid_str(self.uuid))
else:
in_conflict = self.nm.getByUUID(self.uuid)
if in_conflict is not None:
logging.warning('UUID conflict at election exit with %r',
in_conflict)
in_conflict.setUUID(None)
self._node.setRunning()
self._node.id_timestamp = None
self.primary = monotonic_time()
# Do not restart automatically if ElectionFailure is raised, in order
# Do not restart automatically if an election happens, in order
# to avoid a split of the database. For example, with 2 machines with
# a master and a storage on each one and replicas=1, the secondary
# master becomes primary in case of network failure between the 2
......@@ -393,41 +293,91 @@ class Application(BaseApplication):
except StateChangedException, e:
assert e.args[0] == ClusterStates.STOPPING
self.shutdown()
except PrimaryElected, e:
self.primary_master, = e.args
def playSecondaryRole(self):
"""
I play a secondary role, thus only wait for a primary master to fail.
A master play the secondary role when it is unlikely to win the
election (it lost against against another master during identification
or it was notified that another is the primary master).
Its only task is to try again to become the primary master when the
later fail. When connected to the cluster, the only communication is
with the primary master, to stay informed about removed/added master
nodes, and exit if requested.
"""
logging.info('play the secondary role with %r', self.listening_conn)
# Wait for an announcement. If this is too long, probably
# the primary master is down.
# XXX: Same remark as in electPrimary.
t = time() + 10
while self.primary_master_node is None:
self.em.poll(1)
if t < time():
# election timeout
raise ElectionFailure("Election timeout")
self.master_address_dict.clear()
# Restart completely. Non-optimized
# but lower level code needs to be stabilized first.
self.primary = None
handler = master.PrimaryHandler(self)
# The connection to the probably-primary master can be in any state
# depending on how we were informed. The only case in which it can not
# be reused in when we have pending requests.
if self.primary_master.isConnected(True):
master_conn = self.primary_master.getConnection()
# When we find the primary during identification, we don't attach
# the connection (a server one) to any node, and it will be closed
# in the below 'for' loop.
assert master_conn.isClient(), master_conn
try:
# We want the handler to be effective immediately.
# If it's not possible, let's just reconnect.
if not master_conn.setHandler(handler):
master_conn.close()
assert False
except PrimaryFailure:
master_conn = None
else:
master_conn = None
for conn in self.em.getConnectionList():
if not conn.isListening():
conn.close()
# Reconnect to primary master node.
self.nm.reset()
primary_handler = secondary.PrimaryHandler(self)
ClientConnection(self, primary_handler, self.primary_master_node)
# and another for the future incoming connections
self.listening_conn.setHandler(
if conn.isListening():
conn.setHandler(
identification.SecondaryIdentificationHandler(self))
elif conn is not master_conn:
conn.close()
failed = {self.server}
poll = self.em.poll
while True:
self.em.poll(1)
try:
if master_conn is None:
for node in self.nm.getMasterList():
node.setDown()
node = self.primary_master
failed.add(node.getAddress())
if not node.isConnected(True):
# On immediate connection failure,
# PrimaryFailure is raised.
ClientConnection(self, handler, node)
else:
master_conn = None
while True:
poll(1)
except PrimaryFailure:
if self.primary_master.isRunning():
# XXX: What's the best to do here ? Another option is to
# choose the RUNNING master node with the lowest
# election key (i.e. (id_timestamp, address) as
# defined in IdentificationHandler), and return if we
# have the lowest one.
failed = {self.server}
else:
# Since the last primary failure (or since we play the
# secondary role), do not try any node more than once.
for self.primary_master in self.nm.getMasterList():
if self.primary_master.getAddress() not in failed:
break
else:
# All known master nodes are either down or secondary.
# Let's play the primary role again.
break
except PrimaryElected, e:
node = self.primary_master
self.primary_master, = e.args
assert node is not self.primary_master, node
try:
node.getConnection().close()
except PrimaryFailure:
pass
def runManager(self, manager_klass):
self._current_manager = manager_klass(self)
......@@ -456,9 +406,14 @@ class Application(BaseApplication):
# change handlers
notification_packet = Packets.NotifyClusterInformation(state)
for node in self.nm.getIdentifiedList():
for node in self.nm.getList():
if not node.isConnected(True):
continue
conn = node.getConnection()
if node.isIdentified():
conn.send(notification_packet)
elif conn.isServer():
continue
if node.isClient():
if state == ClusterStates.RUNNING:
handler = self.client_service_handler
......@@ -468,6 +423,11 @@ class Application(BaseApplication):
if state != ClusterStates.STOPPING:
conn.abort()
continue
elif node.isMaster():
if state == ClusterStates.RECOVERING:
handler = self.election_handler
else:
handler = self.secondary_handler
elif node.isStorage() and storage_handler:
handler = storage_handler
else:
......@@ -485,7 +445,9 @@ class Application(BaseApplication):
return uuid
hob = UUID_NAMESPACES[node_type]
for uuid in xrange((hob << 24) + 1, hob + 0x10 << 24):
if uuid != self.uuid and getByUUID(uuid) is None:
node = getByUUID(uuid)
if node is None or None is not address == node.getAddress():
assert uuid != self.uuid
return uuid
raise RuntimeError
......@@ -517,17 +479,19 @@ class Application(BaseApplication):
logging.info("asking remaining nodes to shutdown")
self.listening_conn.close()
handler = EventHandler(self)
for node in self.nm.getConnectedList():
for node in self.nm.getList():
if not node.isConnected(True):
continue
conn = node.getConnection()
if node.isStorage():
conn.setHandler(handler)
if not conn.connecting:
if node.isStorage():
conn.send(Packets.NotifyNodeInformation(monotonic_time(), ((
node.getType(), node.getAddress(), node.getUUID(),
NodeStates.TEMPORARILY_DOWN, None),)))
conn.abort()
elif conn.pending():
NodeStates.DOWN, None),)))
if conn.pending():
conn.abort()
else:
continue
conn.close()
while self.em.connection_dict:
......
neo/master/handlers/__init__.py
View file @ f873e151
......@@ -18,9 +18,7 @@ from ..app import monotonic_time
from neo.lib import logging
from neo.lib.exception import StoppedOperation
from neo.lib.handler import EventHandler
from neo.lib.protocol import (uuid_str, NodeTypes, NodeStates, Packets,
BrokenNodeDisallowedError, ProtocolError,
)
from neo.lib.protocol import Packets
X = 0
......@@ -30,41 +28,10 @@ class MasterHandler(EventHandler):
def connectionCompleted(self, conn, new=None):
if new is None:
super(MasterHandler, self).connectionCompleted(conn)
elif new:
self._notifyNodeInformation(conn)
def requestIdentification(self, conn, node_type, uuid, address, name, _):
self.checkClusterName(name)
app = self.app
node = app.nm.getByUUID(uuid)
if node:
if node_type is NodeTypes.MASTER and not (
None != address == node.getAddress()):
raise ProtocolError
if node.isBroken():
raise BrokenNodeDisallowedError
peer_uuid = self._setupNode(conn, node_type, uuid, address, node)
if app.primary:
primary_address = app.server
elif app.primary_master_node is not None:
primary_address = app.primary_master_node.getAddress()
else:
primary_address = None
known_master_list = [(app.server, app.uuid)]
for n in app.nm.getMasterList():
if n.isBroken():
continue
known_master_list.append((n.getAddress(), n.getUUID()))
conn.answer(Packets.AcceptIdentification(
NodeTypes.MASTER,
app.uuid,
app.pt.getPartitions(),
app.pt.getReplicas(),
peer_uuid,
primary_address,
known_master_list),
)
def connectionLost(self, conn, new_state=None):
if self.app.listening_conn: # if running
self._connectionLost(conn)
def askClusterState(self, conn):
state = self.app.getClusterState()
......@@ -94,11 +61,12 @@ class MasterHandler(EventHandler):
self.app.getLastTransaction()))
def _notifyNodeInformation(self, conn):
nm = self.app.nm
node_list = []
node_list.extend(n.asTuple() for n in nm.getMasterList())
node_list.extend(n.asTuple() for n in nm.getClientList())
node_list.extend(n.asTuple() for n in nm.getStorageList())
app = self.app
node = app.nm.getByUUID(conn.getUUID())
node_list = app.nm.getList()
node_list.remove(node)
node_list = ([node.asTuple()] # for id_timestamp
+ app.getNodeInformationDict(node_list)[node.getType()])
conn.send(Packets.NotifyNodeInformation(monotonic_time(), node_list))
def askPartitionTable(self, conn):
......@@ -106,15 +74,10 @@ class MasterHandler(EventHandler):
conn.answer(Packets.AnswerPartitionTable(pt.getID(), pt.getRowList()))
DISCONNECTED_STATE_DICT = {
NodeTypes.STORAGE: NodeStates.TEMPORARILY_DOWN,
}
class BaseServiceHandler(MasterHandler):
"""This class deals with events for a service phase."""
def connectionCompleted(self, conn, new):
self._notifyNodeInformation(conn)
pt = self.app.pt
conn.send(Packets.SendPartitionTable(pt.getID(), pt.getRowList()))
......@@ -125,21 +88,16 @@ class BaseServiceHandler(MasterHandler):
return # for example, when a storage is removed by an admin
assert node.isStorage(), node
logging.info('storage node lost')
if new_state != NodeStates.BROKEN:
new_state = DISCONNECTED_STATE_DICT.get(node.getType(),
NodeStates.DOWN)
assert new_state in (NodeStates.TEMPORARILY_DOWN, NodeStates.DOWN,
NodeStates.BROKEN), new_state
assert node.getState() not in (NodeStates.TEMPORARILY_DOWN,
NodeStates.DOWN, NodeStates.BROKEN), (uuid_str(self.app.uuid),
node.whoSetState(), new_state)
was_pending = node.isPending()
node.setState(new_state)
if new_state != NodeStates.BROKEN and was_pending:
if node.isPending():
# was in pending state, so drop it from the node manager to forget
# it and do not set in running state when it comes back
logging.info('drop a pending node from the node manager')
app.nm.remove(node)
node.setUnknown()
elif node.isDown():
# Already put in DOWN state by AdministrationHandler.setNodeState
return
else:
node.setDown()
app.broadcastNodesInformation([node])
if app.truncate_tid:
raise StoppedOperation
......
neo/master/handlers/administration.py
View file @ f873e151
......@@ -34,8 +34,8 @@ CLUSTER_STATE_WORKFLOW = {
ClusterStates.STARTING_BACKUP),
}
NODE_STATE_WORKFLOW = {
NodeTypes.MASTER: (NodeStates.UNKNOWN,),
NodeTypes.STORAGE: (NodeStates.UNKNOWN, NodeStates.DOWN),
NodeTypes.MASTER: (NodeStates.DOWN,),
NodeTypes.STORAGE: (NodeStates.DOWN, NodeStates.UNKNOWN),
}
class AdministrationHandler(MasterHandler):
......@@ -43,6 +43,7 @@ class AdministrationHandler(MasterHandler):
def connectionLost(self, conn, new_state):
node = self.app.nm.getByUUID(conn.getUUID())
if node is not None:
self.app.nm.remove(node)
def setClusterState(self, conn, state):
......@@ -95,7 +96,7 @@ class AdministrationHandler(MasterHandler):
message = ('state changed' if state_changed else
'node already in %s state' % state)
if node.isStorage():
keep = state == NodeStates.UNKNOWN
keep = state == NodeStates.DOWN
try:
cell_list = app.pt.dropNodeList([node], keep)
except PartitionTableException, e:
......
neo/master/handlers/client.py
View file @ f873e151
......@@ -15,30 +15,21 @@
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from neo.lib.handler import DelayEvent
from neo.lib.protocol import NodeStates, Packets, ProtocolError, MAX_TID, Errors
from neo.lib.protocol import Packets, ProtocolError, MAX_TID, Errors
from ..app import monotonic_time
from . import MasterHandler
class ClientServiceHandler(MasterHandler):
""" Handler dedicated to client during service state """
def connectionLost(self, conn, new_state):
def _connectionLost(self, conn):
# cancel its transactions and forgot the node
app = self.app
if app.listening_conn: # if running
node = app.nm.getByUUID(conn.getUUID())
assert node is not None
assert node is not None, conn
app.tm.clientLost(node)
node.setState(NodeStates.DOWN)
node.setUnknown()
app.broadcastNodesInformation([node])
app.nm.remove(node)
def _notifyNodeInformation(self, conn):
nm = self.app.nm
node_list = [nm.getByUUID(conn.getUUID()).asTuple()] # for id_timestamp
node_list.extend(n.asTuple() for n in nm.getMasterList())
node_list.extend(n.asTuple() for n in nm.getStorageList())
conn.send(Packets.NotifyNodeInformation(monotonic_time(), node_list))
def askBeginTransaction(self, conn, tid):
"""
......
neo/master/handlers/election.py deleted 100644 → 0
View file @ 421fda44
#
# Copyright (C) 2006-2017 Nexedi SA
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from neo.lib import logging
from neo.lib.protocol import uuid_str, NodeTypes, Packets
from neo.lib.protocol import NotReadyError
from neo.lib.exception import ElectionFailure
from neo.lib.handler import EventHandler
from . import MasterHandler
class BaseElectionHandler(EventHandler):
def _notifyNodeInformation(self, conn):
pass
def reelectPrimary(self, conn):
raise ElectionFailure, 'reelection requested'
def announcePrimary(self, conn):
app = self.app
if app.primary:
# I am also the primary... So restart the election.
raise ElectionFailure, 'another primary arises'
try:
address = app.master_address_dict[conn]
assert conn.isServer()
except KeyError:
address = conn.getAddress()
assert conn.isClient()
app.primary = False
app.primary_master_node = node = app.nm.getByAddress(address)
app.negotiating_master_node_set.clear()
logging.info('%s is the primary', node)
def elect(self, conn, peer_address):
app = self.app
if app.server < peer_address:
app.primary = False
if conn is not None:
app.master_address_dict[conn] = peer_address
app.negotiating_master_node_set.discard(peer_address)
class ClientElectionHandler(BaseElectionHandler):
def notifyNodeInformation(self, conn, timestamp, node_list):
# XXX: For the moment, do nothing because
# we'll close this connection and reconnect.
pass
def connectionFailed(self, conn):
addr = conn.getAddress()
node = self.app.nm.getByAddress(addr)
assert node is not None, (uuid_str(self.app.uuid), addr)
# node may still be in unknown state
self.app.negotiating_master_node_set.discard(addr)
super(ClientElectionHandler, self).connectionFailed(conn)
def connectionCompleted(self, conn):
app = self.app
conn.ask(Packets.RequestIdentification(
NodeTypes.MASTER,
app.uuid,
app.server,
app.name,
None,
))
super(ClientElectionHandler, self).connectionCompleted(conn)
def connectionLost(self, conn, new_state):
# Retry connection. Either the node just died (and we will end up in
# connectionFailed) or it just got elected (and we must not ignore
# that node).
addr = conn.getAddress()
self.app.unconnected_master_node_set.add(addr)
self.app.negotiating_master_node_set.discard(addr)
def _acceptIdentification(self, node, peer_uuid, num_partitions,
num_replicas, your_uuid, primary, known_master_list):
app = self.app
# Register new master nodes.
for address, uuid in known_master_list:
if app.server == address:
# This is self.
assert node.getAddress() != primary or uuid == your_uuid, (
uuid_str(uuid), uuid_str(your_uuid))
continue
n = app.nm.getByAddress(address)
if n is None:
n = app.nm.createMaster(address=address)
if primary is not None:
# The primary master is defined.
if app.primary_master_node is not None \
and app.primary_master_node.getAddress() != primary:
# There are multiple primary master nodes. This is
# dangerous.
raise ElectionFailure, 'multiple primary master nodes'
primary_node = app.nm.getByAddress(primary)
if primary_node is None:
# I don't know such a node. Probably this information
# is old. So ignore it.
logging.warning('received an unknown primary node')
else:
# Whatever the situation is, I trust this master.
app.primary = False
app.primary_master_node = primary_node
# Stop waiting for connections than primary master's to
# complete to exit election phase ASAP.
app.negotiating_master_node_set.clear()
return
self.elect(None, node.getAddress())
class ServerElectionHandler(BaseElectionHandler, MasterHandler):
def _setupNode(self, conn, node_type, uuid, address, node):
app = self.app
if node_type != NodeTypes.MASTER:
logging.info('reject a connection from a non-master')
raise NotReadyError
if node is None is app.nm.getByAddress(address):
app.nm.createMaster(address=address)
self.elect(conn, address)
return uuid
neo/master/handlers/identification.py
View file @ f873e151
......@@ -15,26 +15,25 @@
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from neo.lib import logging
from neo.lib.exception import PrimaryElected
from neo.lib.handler import EventHandler
from neo.lib.protocol import ClusterStates, NodeStates, NodeTypes, \
NotReadyError, ProtocolError, uuid_str
NotReadyError, Packets, ProtocolError, uuid_str
from ..app import monotonic_time
from . import MasterHandler
class IdentificationHandler(MasterHandler):
class IdentificationHandler(EventHandler):
def requestIdentification(self, conn, *args, **kw):
super(IdentificationHandler, self).requestIdentification(conn, *args,
**kw)
handler = conn.getHandler()
assert not isinstance(handler, IdentificationHandler), handler
handler.connectionCompleted(conn, True)
def _setupNode(self, conn, node_type, uuid, address, node):
def requestIdentification(self, conn, node_type, uuid,
address, name, id_timestamp):
app = self.app
self.checkClusterName(name)
if address == app.server:
raise ProtocolError('address conflict')
node = app.nm.getByUUID(uuid)
by_addr = address and app.nm.getByAddress(address)
while 1:
if by_addr:
if not by_addr.isConnected():
if not by_addr.isIdentified():
if node is by_addr:
break
if not node or uuid < 0:
......@@ -43,12 +42,15 @@ class IdentificationHandler(MasterHandler):
node = by_addr
break
elif node:
if node.isConnected():
if node.isIdentified():
if uuid < 0:
# The peer wants a temporary id that's already assigned.
# Let's give it another one.
node = uuid = None
break
else:
if node is app._node:
node = None
else:
node.setAddress(address)
break
......@@ -77,7 +79,14 @@ class IdentificationHandler(MasterHandler):
uuid is not None and node is not None)
human_readable_node_type = ' storage (%s) ' % (state, )
elif node_type == NodeTypes.MASTER:
handler = app.secondary_master_handler
if app.election:
if id_timestamp and \
(id_timestamp, address) < (app.election, app.server):
raise PrimaryElected(by_addr or
app.nm.createMaster(address=address))
handler = app.election_handler
else:
handler = app.secondary_handler
human_readable_node_type = ' master '
elif node_type == NodeTypes.ADMIN:
handler = app.administration_handler
......@@ -94,22 +103,43 @@ class IdentificationHandler(MasterHandler):
node.setUUID(uuid)
node.id_timestamp = monotonic_time()
node.setState(state)
node.setConnection(conn)
conn.setHandler(handler)
node.setConnection(conn, not node.isIdentified())
app.broadcastNodesInformation([node], node)
return uuid
class SecondaryIdentificationHandler(MasterHandler):
conn.answer(Packets.AcceptIdentification(
NodeTypes.MASTER,
app.uuid,
app.pt.getPartitions(),
app.pt.getReplicas(),
uuid))
handler._notifyNodeInformation(conn)
handler.connectionCompleted(conn, True)
def announcePrimary(self, conn):
# If we received AnnouncePrimary on a client connection, we might have
# set this handler on server connection, and might receive
# AnnouncePrimary there too. As we cannot reach this without already
# handling a first AnnouncePrimary, we can safely ignore this one.
pass
def _setupNode(self, conn, node_type, uuid, address, node):
# Nothing to do, storage will disconnect when it receives our answer.
# Primary will do the checks.
return uuid
class SecondaryIdentificationHandler(EventHandler):
def requestIdentification(self, conn, node_type, uuid,
address, name, id_timestamp):
app = self.app
self.checkClusterName(name)
if address == app.server:
raise ProtocolError('address conflict')
primary = app.primary_master.getAddress()
if primary == address:
primary = None
elif not app.primary_master.isIdentified():
if node_type == NodeTypes.MASTER:
node = app.nm.createMaster(address=address)
if id_timestamp:
conn.close()
raise PrimaryElected(node)
primary = None
# For some cases, we rely on the fact that the remote will not retry
# immediately (see SocketConnector.CONNECT_LIMIT).
known_master_list = [node.getAddress()
for node in app.nm.getMasterList()]
conn.send(Packets.NotPrimaryMaster(
primary and known_master_list.index(primary),
known_master_list))
conn.abort()
neo/master/handlers/secondary.py → neo/master/handlers/master.py
View file @ f873e151
......@@ -15,83 +15,81 @@
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import sys
from ..app import monotonic_time
from . import MasterHandler
from neo.lib.handler import EventHandler
from neo.lib.exception import ElectionFailure, PrimaryFailure
from neo.lib.protocol import NodeStates, NodeTypes, Packets, uuid_str
from neo.lib import logging
from neo.lib.exception import PrimaryElected, PrimaryFailure
from neo.lib.protocol import ClusterStates, NodeStates, NodeTypes, Packets
class SecondaryMasterHandler(MasterHandler):
""" Handler used by primary to handle secondary masters"""
def connectionLost(self, conn, new_state):
class SecondaryHandler(MasterHandler):
"""Handler used by primary to handle secondary masters"""
def _connectionLost(self, conn):
app = self.app
if app.listening_conn: # if running
node = app.nm.getByUUID(conn.getUUID())
node.setDown()
app.broadcastNodesInformation([node])
def announcePrimary(self, conn):
raise ElectionFailure, 'another primary arises'
def reelectPrimary(self, conn):
raise ElectionFailure, 'reelection requested'
def _notifyNodeInformation(self, conn):
node_list = [n.asTuple() for n in self.app.nm.getMasterList()]
conn.send(Packets.NotifyNodeInformation(monotonic_time(), node_list))
class PrimaryHandler(EventHandler):
""" Handler used by secondaries to handle primary master"""
class ElectionHandler(MasterHandler):
"""Handler used by primary to handle secondary masters during election"""
def connectionLost(self, conn, new_state):
self.connectionFailed(conn)
def connectionCompleted(self, conn, new=None):
if new is None:
super(ElectionHandler, self).connectionCompleted(conn)
app = self.app
conn.ask(Packets.RequestIdentification(NodeTypes.MASTER,
app.uuid, app.server, app.name, app.election))
def connectionFailed(self, conn):
self.app.primary_master_node.setDown()
if self.app.listening_conn: # if running
super(ElectionHandler, self).connectionFailed(conn)
self.connectionLost(conn)
def _acceptIdentification(self, node, *args):
raise PrimaryElected(node)
def _connectionLost(self, *args):
if self.app.primary: # not switching to secondary role
self.app._current_manager.try_secondary = True
def notPrimaryMaster(self, *args):
try:
super(ElectionHandler, self).notPrimaryMaster(*args)
except PrimaryElected, e:
# We keep playing the primary role when the peer does not
# know yet that we won election against the returned node.
if not e.args[0].isIdentified():
raise
# There may be new master nodes. Connect to them.
self.app._current_manager.try_secondary = True
class PrimaryHandler(ElectionHandler):
"""Handler used by secondaries to handle primary master"""
def _acceptIdentification(self, node, num_partitions, num_replicas):
assert self.app.primary_master is node, (self.app.primary_master, node)
def _connectionLost(self, conn):
node = self.app.primary_master
# node is None when switching to primary role
if node and not node.isConnected(True):
raise PrimaryFailure('primary master is dead')
def connectionCompleted(self, conn):
app = self.app
addr = conn.getAddress()
node = app.nm.getByAddress(addr)
# connection successful, set it as running
node.setRunning()
conn.ask(Packets.RequestIdentification(
NodeTypes.MASTER,
app.uuid,
app.server,
app.name,
None,
))
super(PrimaryHandler, self).connectionCompleted(conn)
def reelectPrimary(self, conn):
raise ElectionFailure, 'reelection requested'
def notPrimaryMaster(self, *args):
try:
super(ElectionHandler, self).notPrimaryMaster(*args)
except PrimaryElected, e:
if e.args[0] is not self.app.primary_master:
raise
def notifyClusterInformation(self, conn, state):
self.app.cluster_state = state
if state == ClusterStates.STOPPING:
sys.exit()
def notifyNodeInformation(self, conn, timestamp, node_list):
super(PrimaryHandler, self).notifyNodeInformation(
conn, timestamp, node_list)
for node_type, _, uuid, state, _ in node_list:
assert node_type == NodeTypes.MASTER, node_type
if uuid == self.app.uuid and state == NodeStates.UNKNOWN:
if uuid == self.app.uuid and state == NodeStates.DOWN:
sys.exit()
def _acceptIdentification(self, node, uuid, num_partitions,
num_replicas, your_uuid, primary, known_master_list):
app = self.app
if primary != app.primary_master_node.getAddress():
raise PrimaryFailure('unexpected primary uuid')
if your_uuid != app.uuid:
app.uuid = your_uuid
logging.info('My UUID: ' + uuid_str(your_uuid))
node.setUUID(uuid)
app.id_timestamp = None
neo/master/recovery.py
View file @ f873e151
......@@ -15,6 +15,7 @@
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from neo.lib import logging
from neo.lib.connection import ClientConnection
from neo.lib.protocol import Packets, ProtocolError, ClusterStates, NodeStates
from .app import monotonic_time
from .handlers import MasterHandler
......@@ -47,6 +48,7 @@ class RecoveryManager(MasterHandler):
TID, and the last Partition Table ID from storage nodes, then get
back the latest partition table or make a new table from scratch,
if this is the first time.
A new primary master may also arise during this phase.
"""
logging.info('begin the recovery of the status')
app = self.app
......@@ -54,9 +56,30 @@ class RecoveryManager(MasterHandler):
app.changeClusterState(ClusterStates.RECOVERING)
pt.clear()
self.try_secondary = True
# collect the last partition table available
poll = app.em.poll
while 1:
if self.try_secondary:
# Keep trying to connect to all other known masters,
# to make sure there is a challege between each pair
# of masters in the cluster. If we win, all connections
# opened here will be closed.
self.try_secondary = False
node_list = []
for node in app.nm.getMasterList():
if not (node is app._node or node.isConnected(True)):
# During recovery, master nodes are not put back in
# DOWN state by handlers. This is done
# entirely in this method (here and after this poll
# loop), to minimize the notification packets.
if not node.isDown():
node.setDown()
node_list.append(node)
ClientConnection(app, app.election_handler, node)
if node_list:
app.broadcastNodesInformation(node_list)
poll(1)
if pt.filled():
# A partition table exists, we are starting an existing
......@@ -100,6 +123,17 @@ class RecoveryManager(MasterHandler):
for node in node_list:
assert node.isPending(), node
node.setRunning()
for node in app.nm.getMasterList():
if not (node is app._node or node.isIdentified()):
if node.isConnected(True):
node.getConnection().close()
assert node.isDown(), node
elif not node.isDown():
assert self.try_secondary, node
node.setDown()
node_list.append(node)
app.broadcastNodesInformation(node_list)
if pt.getID() is None:
......
neo/neoctl/neoctl.py
View file @ f873e151
......@@ -157,10 +157,10 @@ class NeoCTL(BaseApplication):
return self.setClusterState(ClusterStates.VERIFYING)
def killNode(self, node):
return self._setNodeState(node, NodeStates.UNKNOWN)
return self._setNodeState(node, NodeStates.DOWN)
def dropNode(self, node):
return self._setNodeState(node, NodeStates.DOWN)
return self._setNodeState(node, NodeStates.UNKNOWN)
def getPrimary(self):
"""
......
neo/scripts/runner.py
View file @ f873e151
......@@ -42,7 +42,6 @@ from neo.tests.benchmark import BenchmarkRunner
# each of them have to import its TestCase classes
UNIT_TEST_MODULES = [
# generic parts
'neo.tests.testBootstrap',
'neo.tests.testConnection',
'neo.tests.testHandler',
'neo.tests.testNodes',
......@@ -50,7 +49,6 @@ UNIT_TEST_MODULES = [
'neo.tests.testPT',
# master application
'neo.tests.master.testClientHandler',
'neo.tests.master.testElectionHandler',
'neo.tests.master.testMasterApp',
'neo.tests.master.testMasterPT',
'neo.tests.master.testRecovery',
......@@ -61,7 +59,6 @@ UNIT_TEST_MODULES = [
'neo.tests.storage.testMasterHandler',
'neo.tests.storage.testStorageApp',
'neo.tests.storage.testStorage' + os.getenv('NEO_TESTS_ADAPTER', 'SQLite'),
'neo.tests.storage.testIdentificationHandler',
'neo.tests.storage.testTransactions',
# client application
'neo.tests.client.testClientApp',
......@@ -99,13 +96,47 @@ ZODB_TEST_MODULES = [
]
class StopOnSuccess(Exception):
pass
class NeoTestRunner(unittest.TextTestResult):
""" Custom result class to build report with statistics per module """
def __init__(self, title, verbosity):
_readable_tid = ()
def __init__(self, title, verbosity, stop_on_success, readable_tid):
super(NeoTestRunner, self).__init__(
_WritelnDecorator(sys.stderr), False, verbosity)
self._title = title
self.stop_on_success = stop_on_success
if readable_tid:
from neo.lib import util
from neo.lib.util import dump, p64, u64
from neo.master.transactions import TransactionManager
def _nextTID(orig, tm, ttid=None, divisor=None):
n = self._next_tid
self._next_tid = n + 1
n = str(n).rjust(3, '-')
if ttid:
t = u64('T%s%s-' % (n, ttid[1:4]))
m = (u64(ttid) - t) % divisor
assert m < 211, (p64(t), divisor)
t = p64(t + m)
else:
t = 'T%s----' % n
assert tm._last_tid < t, (tm._last_tid, t)
tm._last_tid = t
return t
self._readable_tid = (
Patch(self, 1, _next_tid=0),
Patch(TransactionManager, _nextTID=_nextTID),
Patch(util, 1, orig_dump=type(dump)(
dump.__code__, dump.__globals__)),
Patch(dump, __code__=(lambda s:
s if type(s) is str and s.startswith('T') else
orig_dump(s)).__code__),
)
self.modulesStats = {}
self.failedImports = {}
self.run_dict = defaultdict(int)
......@@ -160,17 +191,29 @@ class NeoTestRunner(unittest.TextTestResult):
def startTest(self, test):
super(NeoTestRunner, self).startTest(test)
for patch in self._readable_tid:
patch.apply()
self.run_dict[test.__class__.__module__] += 1
self.start_time = time.time()
def stopTest(self, test):
self.time_dict[test.__class__.__module__] += \
time.time() - self.start_time
for patch in self._readable_tid:
patch.revert()
super(NeoTestRunner, self).stopTest(test)
if self.stop_on_success is not None:
count = self.getUnexpectedCount()
if (count < self.testsRun - len(self.skipped)
if self.stop_on_success else count):
raise StopOnSuccess
def getUnexpectedCount(self):
return (len(self.errors) + len(self.failures)
+ len(self.unexpectedSuccesses))
def _buildSummary(self, add_status):
unexpected_count = len(self.errors) + len(self.failures) \
+ len(self.unexpectedSuccesses)
unexpected_count = self.getUnexpectedCount()
expected_count = len(self.expectedFailures)
success = self.testsRun - unexpected_count - expected_count
add_status('Directory', self.temp_directory)
......@@ -219,6 +262,8 @@ class NeoTestRunner(unittest.TextTestResult):
def buildReport(self, add_status):
subject, summary = self._buildSummary(add_status)
if self.stop_on_success:
return subject, summary
body = StringIO()
body.write(summary)
for test in self.unexpectedSuccesses:
......@@ -243,6 +288,17 @@ class TestRunner(BenchmarkRunner):
help='Repeat tests several times')
parser.add_option('-f', '--functional', action='store_true',
help='Functional tests')
parser.add_option('-s', '--stop-on-error', action='store_false',
dest='stop_on_success',
help='Continue as long as tests pass successfully.'
' It is usually combined with --loop, to check that tests'
' do not fail randomly.')
parser.add_option('-S', '--stop-on-success', action='store_true',
help='Opposite of --stop-on-error: stop as soon as a test'
' passes. Details about errors are not printed at exit.')
parser.add_option('-r', '--readable-tid', action='store_true',
help='Change master behaviour to generate readable TIDs for easier'
' debugging (rather than from current time).')
parser.add_option('-u', '--unit', action='store_true',
help='Unit & threaded tests')
parser.add_option('-z', '--zodb', action='store_true',
......@@ -292,6 +348,8 @@ Environment Variables:
coverage = options.coverage,
cov_unit = options.cov_unit,
only = args,
stop_on_success = options.stop_on_success,
readable_tid = options.readable_tid,
)
def start(self):
......@@ -300,7 +358,8 @@ Environment Variables:
**({'max_size': None} if config.log else {}))
only = config.only
# run requested tests
runner = NeoTestRunner(config.title or 'Neo', config.verbosity)
runner = NeoTestRunner(config.title or 'Neo', config.verbosity,
config.stop_on_success, config.readable_tid)
if config.cov_unit:
from coverage import Coverage
cov_dir = runner.temp_directory + '/coverage'
......@@ -327,6 +386,8 @@ Environment Variables:
except KeyboardInterrupt:
config['mail_to'] = None
traceback.print_exc()
except StopOnSuccess:
pass
if config.coverage:
coverage.stop()
if coverage.neotestrunner:
......@@ -335,7 +396,7 @@ Environment Variables:
if runner.dots:
print
# build report
if only and not config.mail_to:
if (only or config.stop_on_success) and not config.mail_to:
runner._buildSummary = lambda *args: (
runner.__class__._buildSummary(runner, *args)[0], '')
self.build_report = str
......@@ -343,6 +404,8 @@ Environment Variables:
return runner.buildReport(self.add_status)
def main(args=None):
from neo.storage.database.manager import DatabaseManager
DatabaseManager.UNSAFE = True
runner = TestRunner()
runner.run()
return sys.exit(not runner.was_successful())
......
neo/storage/app.py
View file @ f873e151
......@@ -28,8 +28,7 @@ from neo.lib.util import dump
from neo.lib.bootstrap import BootstrapManager
from .checker import Checker
from .database import buildDatabaseManager
from .handlers import identification, initialization
from .handlers import master, hidden
from .handlers import identification, initialization, master
from .replicator import Replicator
from .transactions import TransactionManager
......@@ -170,10 +169,6 @@ class Application(BaseApplication):
if self.master_node is None:
# look for the primary master
self.connectToPrimary()
# check my state
node = self.nm.getByUUID(self.uuid)
if node is not None and node.isHidden():
self.wait()
self.checker = Checker(self)
self.replicator = Replicator(self)
self.tm = TransactionManager(self)
......@@ -274,20 +269,6 @@ class Application(BaseApplication):
if state == ClusterStates.STOPPING_BACKUP:
self.replicator.stop()
def wait(self):
# change handler
logging.info("waiting in hidden state")
_poll = self._poll
handler = hidden.HiddenHandler(self)
for conn in self.em.getConnectionList():
conn.setHandler(handler)
node = self.nm.getByUUID(self.uuid)
while True:
_poll()
if not node.isHidden():
break
def newTask(self, iterator):
try:
iterator.next()
......
neo/storage/database/manager.py
View file @ f873e151
......@@ -55,6 +55,7 @@ class DatabaseManager(object):
"""This class only describes an interface for database managers."""
ENGINES = ()
UNSAFE = False
_deferred = 0
_duplicating = _repairing = None
......
neo/storage/database/sqlite.py
View file @ f873e151
......@@ -78,6 +78,10 @@ class SQLiteDatabaseManager(DatabaseManager):
def _connect(self):
logging.info('connecting to SQLite database %r', self.db)
self.conn = sqlite3.connect(self.db, check_same_thread=False)
if self.UNSAFE:
q = self.query
q("PRAGMA synchronous = OFF")
q("PRAGMA journal_mode = MEMORY")
self._config = {}
def _commit(self):
......@@ -108,6 +112,10 @@ class SQLiteDatabaseManager(DatabaseManager):
raise
def _setup(self):
# SQLite does support transactional Data Definition Language statements
# but unfortunately, the built-in Python binding automatically commits
# between such statements. This anti-feature causes this method to be
# relatively slow; unit tests enables the UNSAFE boolean flag.
self._config.clear()
q = self.query
......
neo/storage/handlers/__init__.py
View file @ f873e151
......@@ -56,12 +56,9 @@ class BaseMasterHandler(BaseHandler):
if uuid == self.app.uuid:
# This is me, do what the master tell me
logging.info("I was told I'm %s", state)
if state in (NodeStates.DOWN, NodeStates.TEMPORARILY_DOWN,
NodeStates.BROKEN, NodeStates.UNKNOWN):
erase = state == NodeStates.DOWN
if state in (NodeStates.UNKNOWN, NodeStates.DOWN):
erase = state == NodeStates.UNKNOWN
self.app.shutdown(erase=erase)
elif state == NodeStates.HIDDEN:
raise StoppedOperation
elif node_type == NodeTypes.CLIENT and state != NodeStates.RUNNING:
logging.info('Notified of non-running client, abort (%s)',
uuid_str(uuid))
......
neo/storage/handlers/hidden.py deleted 100644 → 0
View file @ 421fda44
#
# Copyright (C) 2006-2017 Nexedi SA
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from . import BaseMasterHandler
from neo.lib import logging
from neo.lib.protocol import CellStates
class HiddenHandler(BaseMasterHandler):
"""This class implements a generic part of the event handlers."""
def notifyPartitionChanges(self, conn, ptid, cell_list):
"""This is very similar to Send Partition Table, except that
the information is only about changes from the previous."""
app = self.app
if ptid <= app.pt.getID():
# Ignore this packet.
logging.debug('ignoring older partition changes')
return
# update partition table in memory and the database
app.pt.update(ptid, cell_list, app.nm)
app.dm.changePartitionTable(ptid, cell_list)
# Check changes for replications
for offset, uuid, state in cell_list:
if uuid == app.uuid and app.replicator is not None:
# If this is for myself, this can affect replications.
if state == CellStates.DISCARDED:
app.replicator.removePartition(offset)
elif state == CellStates.OUT_OF_DATE:
app.replicator.addPartition(offset)
def startOperation(self, conn):
self.app.operational = True
neo/storage/handlers/identification.py
View file @ f873e151
......@@ -17,7 +17,7 @@
from neo.lib import logging
from neo.lib.handler import EventHandler
from neo.lib.protocol import NodeTypes, NotReadyError, Packets
from neo.lib.protocol import ProtocolError, BrokenNodeDisallowedError
from neo.lib.protocol import ProtocolError
from .storage import StorageOperationHandler
from .client import ClientOperationHandler, ClientReadOnlyOperationHandler
......@@ -47,8 +47,6 @@ class IdentificationHandler(EventHandler):
if uuid == app.uuid:
raise ProtocolError("uuid conflict or loopback connection")
node = app.nm.getByUUID(uuid, id_timestamp)
if node.isBroken():
raise BrokenNodeDisallowedError
# choose the handler according to the node type
if node_type == NodeTypes.CLIENT:
if app.dm.getBackupTID():
......@@ -67,6 +65,5 @@ class IdentificationHandler(EventHandler):
node.setConnection(conn, app.uuid < uuid)
# accept the identification and trigger an event
conn.answer(Packets.AcceptIdentification(NodeTypes.STORAGE, uuid and
app.uuid, app.pt.getPartitions(), app.pt.getReplicas(), uuid,
app.master_node.getAddress(), ()))
app.uuid, app.pt.getPartitions(), app.pt.getReplicas(), uuid))
handler.connectionCompleted(conn)
neo/storage/handlers/storage.py
View file @ f873e151
......@@ -18,8 +18,7 @@ import weakref
from functools import wraps
from neo.lib.connection import ConnectionClosed
from neo.lib.handler import DelayEvent, EventHandler
from neo.lib.protocol import Errors, NodeStates, Packets, ProtocolError, \
ZERO_HASH
from neo.lib.protocol import Errors, Packets, ProtocolError, ZERO_HASH
def checkConnectionIsReplicatorConnection(func):
def wrapper(self, conn, *args, **kw):
......@@ -53,7 +52,7 @@ class StorageOperationHandler(EventHandler):
node = app.nm.getByUUID(uuid)
else:
node = app.nm.getByAddress(conn.getAddress())
node.setState(NodeStates.DOWN)
node.setUnknown()
replicator = app.replicator
if replicator.current_node is node:
replicator.abort()
......
neo/tests/__init__.py
View file @ f873e151
......@@ -28,7 +28,10 @@ import weakref
import MySQLdb
import transaction
from cStringIO import StringIO
from cPickle import Unpickler
from functools import wraps
from inspect import isclass
from .mock import Mock
from neo.lib import debug, logging, protocol
from neo.lib.protocol import NodeTypes, Packets, UUID_NAMESPACES
......@@ -39,6 +42,7 @@ from unittest.case import _ExpectedFailure, _UnexpectedSuccess
try:
from transaction.interfaces import IDataManager
from ZODB.utils import newTid
from ZODB.ConflictResolution import PersistentReferenceFactory
except ImportError:
pass
......@@ -309,10 +313,6 @@ class NeoUnitTestBase(NeoTestBase):
""" Check if the ProtocolError exception was raised """
self.assertRaises(protocol.ProtocolError, method, *args, **kwargs)
def checkNotReadyErrorRaised(self, method, *args, **kwargs):
""" Check if the NotReadyError exception was raised """
self.assertRaises(protocol.NotReadyError, method, *args, **kwargs)
def checkAborted(self, conn):
""" Ensure the connection was aborted """
self.assertEqual(len(conn.mockGetNamedCalls('abort')), 1)
......@@ -330,16 +330,6 @@ class NeoUnitTestBase(NeoTestBase):
self._checkNoPacketSend(conn, 'answer')
self._checkNoPacketSend(conn, 'ask')
def checkUUIDSet(self, conn, uuid=None, check_intermediate=True):
""" ensure UUID was set on the connection """
calls = conn.mockGetNamedCalls('setUUID')
found_uuid = calls.pop().getParam(0)
if check_intermediate:
for call in calls:
self.assertEqual(found_uuid, call.getParam(0))
if uuid is not None:
self.assertEqual(found_uuid, uuid)
# in check(Ask|Answer|Notify)Packet we return the packet so it can be used
# in tests if more accurate checks are required
......@@ -477,9 +467,12 @@ class Patch(object):
self._patch = patch
try:
orig = patched.__dict__[name]
self._revert = lambda: setattr(patched, name, orig)
except KeyError:
if new or isclass(patched):
self._revert = lambda: delattr(patched, name)
return
orig = getattr(patched, name)
self._revert = lambda: setattr(patched, name, orig)
def apply(self):
assert not self.applied
......@@ -502,5 +495,11 @@ class Patch(object):
self.__del__()
def unpickle_state(data):
unpickler = Unpickler(StringIO(data))
unpickler.persistent_load = PersistentReferenceFactory().persistent_load
unpickler.load() # skip the class tuple
return unpickler.load()
__builtin__.pdb = lambda depth=0: \
debug.getPdb().set_trace(sys._getframe(depth+1))
neo/tests/client/testClientApp.py
View file @ f873e151
......@@ -21,7 +21,6 @@ from .. import NeoUnitTestBase, buildUrlFromString
from neo.client.app import Application
from neo.client.cache import test as testCache
from neo.client.exception import NEOStorageError
from neo.lib.protocol import NodeTypes, UUID_NAMESPACES
class ClientApplicationTests(NeoUnitTestBase):
......@@ -97,63 +96,6 @@ class ClientApplicationTests(NeoUnitTestBase):
# no packet sent
self.checkNoPacketSent(app.master_conn)
def test_connectToPrimaryNode(self):
# here we have three master nodes :
# the connection to the first will fail
# the second will have changed
# the third will not be ready
# after the third, the partition table will be operational
# (as if it was connected to the primary master node)
# will raise IndexError at the third iteration
app = self.getApp('127.0.0.1:10010 127.0.0.1:10011')
# TODO: test more connection failure cases
# askLastTransaction
def _ask8(_):
pass
# Sixth packet : askPartitionTable succeeded
def _ask7(_):
app.pt = Mock({'operational': True})
# fifth packet : request node identification succeeded
def _ask6(conn):
app.master_conn = conn
app.uuid = 1 + (UUID_NAMESPACES[NodeTypes.CLIENT] << 24)
app.trying_master_node = app.primary_master_node = Mock({
'getAddress': ('127.0.0.1', 10011),
'__str__': 'Fake master node',
})
# third iteration : node not ready
def _ask4(_):
app.trying_master_node = None
# second iteration : master node changed
def _ask3(_):
app.primary_master_node = Mock({
'getAddress': ('127.0.0.1', 10010),
'__str__': 'Fake master node',
})
# first iteration : connection failed
def _ask2(_):
app.trying_master_node = None
# do nothing for the first call
# Case of an unknown primary_uuid (XXX: handler should probably raise,
# it's not normal for a node to inform of a primary uuid without
# telling us what its address is.)
def _ask1(_):
pass
ask_func_list = [_ask1, _ask2, _ask3, _ask4, _ask6, _ask7, _ask8]
def _ask_base(conn, _, handler=None):
ask_func_list.pop(0)(conn)
app.nm.getByAddress(conn.getAddress())._connection = None
app._ask = _ask_base
# fake environment
app.em.close()
app.em = Mock({'getConnectionList': []})
app.pt = Mock({ 'operational': False})
app.start = lambda: None
app.master_conn = app._connectToPrimaryNode()
self.assertFalse(ask_func_list)
self.assertTrue(app.master_conn is not None)
self.assertTrue(app.pt.operational())
if __name__ == '__main__':
unittest.main()
neo/tests/functional/__init__.py
View file @ f873e151
......@@ -617,13 +617,8 @@ class NEOCluster(object):
self.expectStorageState(process.getUUID(), NodeStates.PENDING,
*args, **kw)
def expectUnknown(self, process, *args, **kw):
self.expectStorageState(process.getUUID(), NodeStates.UNKNOWN,
*args, **kw)
def expectUnavailable(self, process, *args, **kw):
self.expectStorageState(process.getUUID(),
NodeStates.TEMPORARILY_DOWN, *args, **kw)
def expectDown(self, process, *args, **kw):
self.expectStorageState(process.getUUID(), NodeStates.DOWN, *args, **kw)
def expectPrimary(self, uuid=None, *args, **kw):
def callback(last_try):
......@@ -686,8 +681,7 @@ class NEOCluster(object):
return current_try, current_try
self.expectCondition(callback, *args, **kw)
def expectStorageNotKnown(self, process, *args, **kw):
# /!\ Not Known != Unknown
def expectStorageUnknown(self, process, *args, **kw):
process_uuid = process.getUUID()
def expected_storage_not_known(last_try):
for storage in self.getStorageList():
......
neo/tests/functional/testCluster.py
View file @ f873e151
......@@ -48,7 +48,7 @@ class ClusterTests(NEOFunctionalTest):
neo.stop()
neo.run(except_storages=(s2, ))
neo.expectPending(s1)
neo.expectUnknown(s2)
neo.expectDown(s2)
neo.expectClusterRecovering()
# Starting missing storage allows cluster to exit Recovery without
# neoctl action.
......@@ -61,11 +61,11 @@ class ClusterTests(NEOFunctionalTest):
neo.stop()
neo.run(except_storages=(s2, ))
neo.expectPending(s1)
neo.expectUnknown(s2)
neo.expectDown(s2)
neo.expectClusterRecovering()
neo.startCluster()
neo.expectRunning(s1)
neo.expectUnknown(s2)
neo.expectDown(s2)
neo.expectClusterRunning()
def testClusterBreaks(self):
......@@ -149,20 +149,20 @@ class ClusterTests(NEOFunctionalTest):
)
storages = self.neo.getStorageProcessList()
self.neo.run(except_storages=storages)
self.neo.expectStorageNotKnown(storages[0])
self.neo.expectStorageNotKnown(storages[1])
self.neo.expectStorageUnknown(storages[0])
self.neo.expectStorageUnknown(storages[1])
storages[0].start()
self.neo.expectPending(storages[0])
self.neo.expectStorageNotKnown(storages[1])
self.neo.expectStorageUnknown(storages[1])
storages[1].start()
self.neo.expectPending(storages[0])
self.neo.expectPending(storages[1])
storages[0].stop()
self.neo.expectUnavailable(storages[0])
self.neo.expectDown(storages[0])
self.neo.expectPending(storages[1])
storages[1].stop()
self.neo.expectUnavailable(storages[0])
self.neo.expectUnavailable(storages[1])
self.neo.expectDown(storages[0])
self.neo.expectDown(storages[1])
def test_suite():
return unittest.makeSuite(ClusterTests)
......
neo/tests/functional/testMaster.py
View file @ f873e151
......@@ -59,7 +59,7 @@ class MasterTests(NEOFunctionalTest):
self.assertEqual(len(killed_uuid_list), 1)
uuid = killed_uuid_list[0]
# Check the state of the primary we just killed
self.neo.expectMasterState(uuid, (None, NodeStates.UNKNOWN))
self.neo.expectMasterState(uuid, (None, NodeStates.DOWN))
# BUG: The following check expects neoctl to reconnect before
# the election finishes.
self.assertEqual(self.neo.getPrimary(), None)
......@@ -77,12 +77,13 @@ class MasterTests(NEOFunctionalTest):
killed_uuid_list = self.neo.killSecondaryMaster()
# Test sanity checks.
self.assertEqual(len(killed_uuid_list), 1)
self.neo.expectMasterState(killed_uuid_list[0], None)
self.assertEqual(len(self.neo.getMasterList()), 2)
self.neo.expectMasterState(killed_uuid_list[0],
NodeStates.DOWN)
self.assertEqual(len(self.neo.getMasterList()), MASTER_NODE_COUNT)
uuid, = self.neo.killPrimary()
# Check the state of the primary we just killed
self.neo.expectMasterState(uuid, (None, NodeStates.UNKNOWN))
self.neo.expectMasterState(uuid, NodeStates.DOWN)
# Check that a primary master arose.
self.neo.expectPrimary(timeout=10)
# Check that the uuid really changed.
......
neo/tests/functional/testStorage.py
View file @ f873e151
......@@ -168,7 +168,7 @@ class StorageTests(NEOFunctionalTest):
self.neo.neoctl.killNode(started[0].getUUID())
# Cluster still operational. All cells of first storage should be
# outdated.
self.neo.expectUnavailable(started[0])
self.neo.expectDown(started[0])
self.neo.expectOudatedCells(2)
self.neo.expectClusterRunning()
......@@ -177,7 +177,7 @@ class StorageTests(NEOFunctionalTest):
started[1].stop()
# Cluster not operational anymore. Only cells of second storage that
# were shared with the third one should become outdated.
self.neo.expectUnavailable(started[1])
self.neo.expectDown(started[1])
self.neo.expectClusterRecovering()
self.neo.expectOudatedCells(3)
......@@ -198,7 +198,7 @@ class StorageTests(NEOFunctionalTest):
# stop it, the cluster must switch to verification
started[0].stop()
self.neo.expectUnavailable(started[0])
self.neo.expectDown(started[0])
self.neo.expectClusterRecovering()
# client must have been disconnected
self.assertEqual(len(self.neo.getClientlist()), 0)
......@@ -224,7 +224,7 @@ class StorageTests(NEOFunctionalTest):
# stop one storage, cluster must remains running
started[0].stop()
self.neo.expectUnavailable(started[0])
self.neo.expectDown(started[0])
self.neo.expectRunning(started[1])
self.neo.expectRunning(started[2])
self.neo.expectOudatedCells(number=10)
......@@ -232,17 +232,17 @@ class StorageTests(NEOFunctionalTest):
# stop a second storage, cluster is still running
started[1].stop()
self.neo.expectUnavailable(started[0])
self.neo.expectUnavailable(started[1])
self.neo.expectDown(started[0])
self.neo.expectDown(started[1])
self.neo.expectRunning(started[2])
self.neo.expectOudatedCells(number=20)
self.neo.expectClusterRunning()
# stop the last, cluster died
started[2].stop()
self.neo.expectUnavailable(started[0])
self.neo.expectUnavailable(started[1])
self.neo.expectUnavailable(started[2])
self.neo.expectDown(started[0])
self.neo.expectDown(started[1])
self.neo.expectDown(started[2])
self.neo.expectOudatedCells(number=20)
self.neo.expectClusterRecovering()
......@@ -312,7 +312,7 @@ class StorageTests(NEOFunctionalTest):
# kill one storage, it should be set as unavailable
started[0].stop()
self.neo.expectUnavailable(started[0])
self.neo.expectDown(started[0])
self.neo.expectRunning(started[1])
# and the partition table must not change
self.neo.expectAssignedCells(started[0], 10)
......@@ -320,7 +320,7 @@ class StorageTests(NEOFunctionalTest):
# ask neoctl to drop it
self.neo.neoctl.dropNode(started[0].getUUID())
self.neo.expectStorageNotKnown(started[0])
self.neo.expectStorageUnknown(started[0])
self.neo.expectAssignedCells(started[0], 0)
self.neo.expectAssignedCells(started[1], 10)
self.assertRaises(RuntimeError, self.neo.neoctl.dropNode,
......@@ -335,7 +335,7 @@ class StorageTests(NEOFunctionalTest):
(started, stopped) = self.__setup(storage_number=2, replicas=1,
pending_number=1, partitions=10)
self.neo.expectRunning(started[0])
self.neo.expectStorageNotKnown(stopped[0])
self.neo.expectStorageUnknown(stopped[0])
self.neo.expectOudatedCells(number=0)
# populate the cluster with some data
......@@ -362,7 +362,7 @@ class StorageTests(NEOFunctionalTest):
# kill the first storage
started[0].stop()
self.neo.expectUnavailable(started[0])
self.neo.expectDown(started[0])
self.neo.expectOudatedCells(number=10)
self.neo.expectAssignedCells(started[0], 10)
self.neo.expectAssignedCells(stopped[0], 10)
......@@ -371,7 +371,7 @@ class StorageTests(NEOFunctionalTest):
# drop it from partition table
self.neo.neoctl.dropNode(started[0].getUUID())
self.neo.expectStorageNotKnown(started[0])
self.neo.expectStorageUnknown(started[0])
self.neo.expectRunning(stopped[0])
self.neo.expectAssignedCells(started[0], 0)
self.neo.expectAssignedCells(stopped[0], 10)
......@@ -395,12 +395,12 @@ class StorageTests(NEOFunctionalTest):
# drop the first then the second storage
started[0].stop()
self.neo.expectUnavailable(started[0])
self.neo.expectDown(started[0])
self.neo.expectRunning(started[1])
self.neo.expectOudatedCells(number=10)
started[1].stop()
self.neo.expectUnavailable(started[0])
self.neo.expectUnavailable(started[1])
self.neo.expectDown(started[0])
self.neo.expectDown(started[1])
self.neo.expectOudatedCells(number=10)
self.neo.expectClusterRecovering()
# XXX: need to sync with storages first
......@@ -409,7 +409,7 @@ class StorageTests(NEOFunctionalTest):
# restart the cluster with the first storage killed
self.neo.run(except_storages=[started[1]])
self.neo.expectPending(started[0])
self.neo.expectUnknown(started[1])
self.neo.expectDown(started[1])
self.neo.expectClusterRecovering()
# Cluster doesn't know there are outdated cells
self.neo.expectOudatedCells(number=0)
......
neo/tests/master/testElectionHandler.py deleted 100644 → 0
View file @ 421fda44
#
# Copyright (C) 2009-2017 Nexedi SA
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import unittest
from ..mock import Mock
from neo.lib import protocol
from .. import NeoUnitTestBase
from neo.lib.protocol import NodeTypes, NodeStates, Packets
from neo.master.app import Application
from neo.master.handlers.election import ClientElectionHandler, \
ServerElectionHandler
from neo.lib.exception import ElectionFailure
from neo.lib.connection import ClientConnection
class MasterClientElectionTestBase(NeoUnitTestBase):
def setUp(self):
super(MasterClientElectionTestBase, self).setUp()
self._master_port = 3001
def identifyToMasterNode(self):
node = self.app.nm.createMaster(uuid=self.getMasterUUID())
node.setAddress((self.local_ip, self._master_port))
self._master_port += 1
conn = self.getFakeConnection(
uuid=node.getUUID(),
address=node.getAddress(),
)
node.setConnection(conn)
return (node, conn)
def checkAcceptIdentification(self, conn):
return self.checkAnswerPacket(conn, Packets.AcceptIdentification)
class MasterClientElectionTests(MasterClientElectionTestBase):
def setUp(self):
super(MasterClientElectionTests, self).setUp()
# create an application object
config = self.getMasterConfiguration(master_number=1)
self.app = Application(config)
self.app.em.close()
self.app.pt.clear()
self.app.em = Mock()
self.app.uuid = self.getMasterUUID()
self.app.server = (self.local_ip, 10000)
self.app.name = 'NEOCLUSTER'
self.election = ClientElectionHandler(self.app)
self.app.unconnected_master_node_set = set()
self.app.negotiating_master_node_set = set()
def _checkUnconnected(self, node):
addr = node.getAddress()
self.assertFalse(addr in self.app.negotiating_master_node_set)
def test_connectionFailed(self):
node, conn = self.identifyToMasterNode()
self.assertTrue(node.isUnknown())
self._checkUnconnected(node)
self.election.connectionFailed(conn)
self._checkUnconnected(node)
self.assertTrue(node.isUnknown())
def test_connectionCompleted(self):
node, conn = self.identifyToMasterNode()
self.assertTrue(node.isUnknown())
self._checkUnconnected(node)
self.election.connectionCompleted(conn)
self._checkUnconnected(node)
self.assertTrue(node.isUnknown())
self.checkAskPacket(conn, Packets.RequestIdentification)
def _setNegociating(self, node):
self._checkUnconnected(node)
addr = node.getAddress()
self.app.negotiating_master_node_set.add(addr)
def test_connectionClosed(self):
node, conn = self.identifyToMasterNode()
self._setNegociating(node)
self.election.connectionClosed(conn)
self.assertTrue(node.isUnknown())
addr = node.getAddress()
self.assertFalse(addr in self.app.negotiating_master_node_set)
def test_acceptIdentification1(self):
""" A non-master node accept identification """
node, conn = self.identifyToMasterNode()
args = (node.getUUID(), 0, 10, self.app.uuid, None,
self._getMasterList())
self.election.acceptIdentification(conn,
NodeTypes.CLIENT, *args)
self.assertFalse(node in self.app.negotiating_master_node_set)
self.checkClosed(conn)
def test_acceptIdentificationDoesNotKnowPrimary(self):
master1, master1_conn = self.identifyToMasterNode()
master1_uuid = master1.getUUID()
self.election.acceptIdentification(
master1_conn,
NodeTypes.MASTER,
master1_uuid,
1,
0,
self.app.uuid,
None,
[(master1.getAddress(), master1_uuid)],
)
self.assertEqual(self.app.primary_master_node, None)
def test_acceptIdentificationKnowsPrimary(self):
master1, master1_conn = self.identifyToMasterNode()
master1_uuid = master1.getUUID()
primary1 = master1.getAddress()
self.election.acceptIdentification(
master1_conn,
NodeTypes.MASTER,
master1_uuid,
1,
0,
self.app.uuid,
primary1,
[(master1.getAddress(), master1_uuid)],
)
self.assertNotEqual(self.app.primary_master_node, None)
def test_acceptIdentificationMultiplePrimaries(self):
master1, master1_conn = self.identifyToMasterNode()
master2, master2_conn = self.identifyToMasterNode()
master3, _ = self.identifyToMasterNode()
master1_uuid = master1.getUUID()
master2_uuid = master2.getUUID()
master3_uuid = master3.getUUID()
primary1 = master1.getAddress()
primary3 = master3.getAddress()
master1_address = master1.getAddress()
master2_address = master2.getAddress()
master3_address = master3.getAddress()
self.election.acceptIdentification(
master1_conn,
NodeTypes.MASTER,
master1_uuid,
1,
0,
self.app.uuid,
primary1,
[(master1_address, master1_uuid)],
)
self.assertRaises(ElectionFailure, self.election.acceptIdentification,
master2_conn,
NodeTypes.MASTER,
master2_uuid,
1,
0,
self.app.uuid,
primary3,
[
(master1_address, master1_uuid),
(master2_address, master2_uuid),
(master3_address, master3_uuid),
],
)
def test_acceptIdentification3(self):
""" Identification accepted """
node, conn = self.identifyToMasterNode()
args = (node.getUUID(), 0, 10, self.app.uuid, None,
self._getMasterList())
self.election.acceptIdentification(conn, NodeTypes.MASTER, *args)
self.checkUUIDSet(conn, node.getUUID())
self.assertEqual(self.app.primary is False,
self.app.server < node.getAddress())
self.assertFalse(node in self.app.negotiating_master_node_set)
def _getMasterList(self, with_node=None):
master_list = self.app.nm.getMasterList()
return [(x.getAddress(), x.getUUID()) for x in master_list]
class MasterServerElectionTests(MasterClientElectionTestBase):
def setUp(self):
super(MasterServerElectionTests, self).setUp()
# create an application object
config = self.getMasterConfiguration(master_number=1)
self.app = Application(config)
self.app.em.close()
self.app.pt.clear()
self.app.name = 'NEOCLUSTER'
self.app.em = Mock()
self.election = ServerElectionHandler(self.app)
self.app.unconnected_master_node_set = set()
self.app.negotiating_master_node_set = set()
for node in self.app.nm.getMasterList():
node.setState(NodeStates.RUNNING)
# define some variable to simulate client and storage node
self.client_address = (self.local_ip, 1000)
self.storage_address = (self.local_ip, 2000)
self.master_address = (self.local_ip, 3000)
def test_requestIdentification1(self):
""" A non-master node request identification """
node, conn = self.identifyToMasterNode()
args = node.getUUID(), node.getAddress(), self.app.name, None
self.assertRaises(protocol.NotReadyError,
self.election.requestIdentification,
conn, NodeTypes.CLIENT, *args)
def test_requestIdentification3(self):
""" A broken master node request identification """
node, conn = self.identifyToMasterNode()
node.setBroken()
args = node.getUUID(), node.getAddress(), self.app.name, None
self.assertRaises(protocol.BrokenNodeDisallowedError,
self.election.requestIdentification,
conn, NodeTypes.MASTER, *args)
def test_requestIdentification4(self):
""" No conflict """
node, conn = self.identifyToMasterNode()
args = node.getUUID(), node.getAddress(), self.app.name, None
self.election.requestIdentification(conn,
NodeTypes.MASTER, *args)
self.checkUUIDSet(conn, node.getUUID())
(node_type, uuid, partitions, replicas, new_uuid, primary_uuid,
master_list) = self.checkAcceptIdentification(conn).decode()
self.assertEqual(node.getUUID(), new_uuid)
self.assertNotEqual(node.getUUID(), uuid)
def __getClient(self):
uuid = self.getClientUUID()
conn = self.getFakeConnection(uuid=uuid, address=self.client_address)
self.app.nm.createClient(uuid=uuid, address=self.client_address)
return conn
def testRequestIdentification1(self):
""" Check with a non-master node, must be refused """
conn = self.__getClient()
self.checkNotReadyErrorRaised(
self.election.requestIdentification,
conn,
NodeTypes.CLIENT,
conn.getUUID(),
conn.getAddress(),
self.app.name,
None,
)
def _requestIdentification(self):
conn = self.getFakeConnection()
peer_uuid = self.getMasterUUID()
address = (self.local_ip, 2001)
self.election.requestIdentification(
conn,
NodeTypes.MASTER,
peer_uuid,
address,
self.app.name,
None,
)
node_type, uuid, partitions, replicas, _peer_uuid, primary, \
master_list = self.checkAcceptIdentification(conn).decode()
self.assertEqual(node_type, NodeTypes.MASTER)
self.assertEqual(uuid, self.app.uuid)
self.assertEqual(partitions, self.app.pt.getPartitions())
self.assertEqual(replicas, self.app.pt.getReplicas())
self.assertTrue(address in [x[0] for x in master_list])
self.assertTrue(self.app.server in [x[0] for x in master_list])
self.assertEqual(peer_uuid, _peer_uuid)
return primary
def testRequestIdentificationDoesNotKnowPrimary(self):
self.app.primary = False
self.app.primary_master_node = None
self.assertEqual(self._requestIdentification(), None)
def testRequestIdentificationKnowsPrimary(self):
self.app.primary = False
primary = (self.local_ip, 3000)
self.app.primary_master_node = Mock({
'getAddress': primary,
})
self.assertEqual(self._requestIdentification(), primary)
def testRequestIdentificationIsPrimary(self):
self.app.primary = True
primary = self.app.server
self.app.primary_master_node = Mock({
'getAddress': primary,
})
self.assertEqual(self._requestIdentification(), primary)
def test_reelectPrimary(self):
node, conn = self.identifyToMasterNode()
self.assertRaises(ElectionFailure, self.election.reelectPrimary, conn)
if __name__ == '__main__':
unittest.main()
neo/tests/master/testMasterPT.py
View file @ f873e151
......@@ -63,29 +63,24 @@ class MasterPartitionTableTests(NeoUnitTestBase):
uuid4 = self.getStorageUUID()
server4 = ("127.0.0.4", 19004)
sn4 = self.createStorage(server4, uuid4)
uuid5 = self.getStorageUUID()
server5 = ("127.0.0.5", 19005)
sn5 = self.createStorage(server5, uuid5)
# create partition table
num_partitions = 5
num_partitions = 4
num_replicas = 3
pt = PartitionTable(num_partitions, num_replicas)
pt._setCell(0, sn1, CellStates.OUT_OF_DATE)
sn1.setState(NodeStates.RUNNING)
pt._setCell(1, sn2, CellStates.UP_TO_DATE)
sn2.setState(NodeStates.TEMPORARILY_DOWN)
sn2.setState(NodeStates.DOWN)
pt._setCell(2, sn3, CellStates.UP_TO_DATE)
sn3.setState(NodeStates.DOWN)
sn3.setState(NodeStates.UNKNOWN)
pt._setCell(3, sn4, CellStates.UP_TO_DATE)
sn4.setState(NodeStates.BROKEN)
pt._setCell(4, sn5, CellStates.UP_TO_DATE)
sn5.setState(NodeStates.RUNNING)
sn4.setState(NodeStates.RUNNING)
# outdate nodes
cells_outdated = pt.outdate()
self.assertEqual(len(cells_outdated), 3)
self.assertEqual(len(cells_outdated), 2)
for offset, uuid, state in cells_outdated:
self.assertTrue(offset in (1, 2, 3))
self.assertTrue(uuid in (uuid2, uuid3, uuid4))
self.assertIn(offset, (1, 2))
self.assertIn(uuid, (uuid2, uuid3))
self.assertEqual(state, CellStates.OUT_OF_DATE)
# check each cell
# part 1, already outdated
......@@ -103,15 +98,10 @@ class MasterPartitionTableTests(NeoUnitTestBase):
self.assertEqual(len(cells), 1)
cell = cells[0]
self.assertEqual(cell.getState(), CellStates.OUT_OF_DATE)
# part 4, already outdated
# part 4, remains running
cells = pt.getCellList(3)
self.assertEqual(len(cells), 1)
cell = cells[0]
self.assertEqual(cell.getState(), CellStates.OUT_OF_DATE)
# part 5, remains running
cells = pt.getCellList(4)
self.assertEqual(len(cells), 1)
cell = cells[0]
self.assertEqual(cell.getState(), CellStates.UP_TO_DATE)
def test_15_dropNodeList(self):
......@@ -156,7 +146,7 @@ class MasterPartitionTableTests(NeoUnitTestBase):
uuid2 = self.getStorageUUID()
server2 = ("127.0.0.2", 19001)
sn2 = self.createStorage(server2, uuid2)
sn2.setState(NodeStates.TEMPORARILY_DOWN)
sn2.setState(NodeStates.DOWN)
# add node without uuid
server3 = ("127.0.0.3", 19001)
sn3 = self.createStorage(server3, None, NodeStates.RUNNING)
......
neo/tests/master/testRecovery.py
View file @ f873e151
......@@ -94,7 +94,7 @@ class MasterRecoveryTests(NeoUnitTestBase):
conn = self.getFakeConnection(uuid, self.storage_port)
offset = 1000000
self.assertFalse(self.app.pt.hasOffset(offset))
cell_list = [(offset, ((uuid, NodeStates.DOWN,),),)]
cell_list = [(offset, ((uuid, NodeStates.UNKNOWN,),),)]
node.setPending()
self.checkProtocolErrorRaised(recovery.answerPartitionTable, conn,
2, cell_list)
......
neo/tests/storage/testIdentificationHandler.py deleted 100644 → 0
View file @ 421fda44
#
# Copyright (C) 2009-2017 Nexedi SA
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import unittest
from .. import NeoUnitTestBase
from neo.lib.protocol import NodeTypes, BrokenNodeDisallowedError
from neo.lib.pt import PartitionTable
from neo.storage.app import Application
from neo.storage.handlers.identification import IdentificationHandler
class StorageIdentificationHandlerTests(NeoUnitTestBase):
def setUp(self):
NeoUnitTestBase.setUp(self)
config = self.getStorageConfiguration(master_number=1)
self.app = Application(config)
self.app.name = 'NEO'
self.app.operational = True
self.app.pt = PartitionTable(4, 1)
self.identification = IdentificationHandler(self.app)
def _tearDown(self, success):
self.app.close()
del self.app
super(StorageIdentificationHandlerTests, self)._tearDown(success)
def test_requestIdentification3(self):
""" broken nodes must be rejected """
uuid = self.getClientUUID()
conn = self.getFakeConnection(uuid=uuid)
node = self.app.nm.createClient(uuid=uuid)
node.setBroken()
self.assertRaises(BrokenNodeDisallowedError,
self.identification.requestIdentification,
conn,
NodeTypes.CLIENT,
uuid,
None,
self.app.name,
None,
)
if __name__ == "__main__":
unittest.main()
neo/tests/testBootstrap.py deleted 100644 → 0
View file @ 421fda44
#
# Copyright (C) 2009-2017 Nexedi SA
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import unittest
from . import NeoUnitTestBase
from neo.storage.app import Application
from neo.lib.bootstrap import BootstrapManager
from neo.lib.protocol import NodeTypes, Packets
class BootstrapManagerTests(NeoUnitTestBase):
def setUp(self):
NeoUnitTestBase.setUp(self)
self.prepareDatabase(number=1)
# create an application object
config = self.getStorageConfiguration()
self.app = Application(config)
self.bootstrap = BootstrapManager(self.app, NodeTypes.STORAGE)
# define some variable to simulate client and storage node
self.master_port = 10010
self.storage_port = 10020
self.num_partitions = 1009
self.num_replicas = 2
def _tearDown(self, success):
self.app.close()
del self.app
super(BootstrapManagerTests, self)._tearDown(success)
# Tests
def testConnectionCompleted(self):
address = ("127.0.0.1", self.master_port)
conn = self.getFakeConnection(address=address)
self.bootstrap.current = self.app.nm.createMaster(address=address)
self.bootstrap.connectionCompleted(conn)
self.checkAskPacket(conn, Packets.RequestIdentification)
def testHandleNotReady(self):
# the primary is not ready
address = ("127.0.0.1", self.master_port)
conn = self.getFakeConnection(address=address)
self.bootstrap.current = self.app.nm.createMaster(address=address)
self.bootstrap.notReady(conn, '')
self.checkClosed(conn)
self.checkNoPacketSent(conn)
if __name__ == "__main__":
unittest.main()
neo/tests/testConnection.py
View file @ f873e151
......@@ -21,7 +21,7 @@ from neo.lib import connection, logging
from neo.lib.connection import BaseConnection, ClientConnection, \
MTClientConnection, CRITICAL_TIMEOUT
from neo.lib.handler import EventHandler
from neo.lib.protocol import Packets
from neo.lib.protocol import ENCODED_VERSION, Packets
from . import NeoUnitTestBase, Patch
......@@ -73,6 +73,7 @@ class ConnectionTests(NeoUnitTestBase):
# don't accept any other packet without specifying a queue.
self.handler = EventHandler(self.app)
conn = self._makeClientConnection()
conn.read_buf.append(ENCODED_VERSION)
use_case_list = (
# (a) For a single packet sent at T,
......
neo/tests/testHandler.py
View file @ f873e151
......@@ -19,7 +19,7 @@ from .mock import Mock
from . import NeoUnitTestBase
from neo.lib.handler import EventHandler
from neo.lib.protocol import PacketMalformedError, UnexpectedPacketError, \
BrokenNodeDisallowedError, NotReadyError, ProtocolError
NotReadyError, ProtocolError
class HandlerTests(NeoUnitTestBase):
......@@ -60,14 +60,6 @@ class HandlerTests(NeoUnitTestBase):
self.setFakeMethod(fake)
self.handler.dispatch(conn, packet)
self.checkClosed(conn)
# raise BrokenNodeDisallowedError
conn.mockCalledMethods = {}
def fake(c):
raise BrokenNodeDisallowedError
self.setFakeMethod(fake)
self.handler.dispatch(conn, packet)
self.checkErrorPacket(conn)
self.checkAborted(conn)
# raise NotReadyError
conn.mockCalledMethods = {}
def fake(c):
......
neo/tests/testNodes.py
View file @ f873e151
......@@ -35,7 +35,7 @@ class NodesTests(NeoUnitTestBase):
address = ('127.0.0.1', 10000)
uuid = self.getNewUUID(None)
node = Node(self.nm, address=address, uuid=uuid)
self.assertEqual(node.getState(), NodeStates.UNKNOWN)
self.assertEqual(node.getState(), NodeStates.DOWN)
self.assertEqual(node.getAddress(), address)
self.assertEqual(node.getUUID(), uuid)
self.assertTrue(time() - 1 < node.getLastStateChange() < time())
......@@ -43,7 +43,7 @@ class NodesTests(NeoUnitTestBase):
def testState(self):
""" Check if the last changed time is updated when state is changed """
node = Node(self.nm)
self.assertEqual(node.getState(), NodeStates.UNKNOWN)
self.assertEqual(node.getState(), NodeStates.DOWN)
self.assertTrue(time() - 1 < node.getLastStateChange() < time())
previous_time = node.getLastStateChange()
node.setState(NodeStates.RUNNING)
......@@ -156,15 +156,15 @@ class NodeManagerTests(NeoUnitTestBase):
old_uuid = self.storage.getUUID()
new_uuid = self.getStorageUUID()
node_list = (
(NodeTypes.CLIENT, None, self.client.getUUID(), NodeStates.DOWN, None),
(NodeTypes.CLIENT, None, self.client.getUUID(), NodeStates.UNKNOWN, None),
(NodeTypes.MASTER, new_address, self.master.getUUID(), NodeStates.RUNNING, None),
(NodeTypes.STORAGE, self.storage.getAddress(), new_uuid,
NodeStates.RUNNING, None),
(NodeTypes.ADMIN, self.admin.getAddress(), self.admin.getUUID(),
NodeStates.UNKNOWN, None),
NodeStates.DOWN, None),
)
app = Mock()
app.pt = Mock()
app.pt = Mock({'dropNode': True})
# update manager content
manager.update(app, time(), node_list)
# - the client gets down
......@@ -180,9 +180,9 @@ class NodeManagerTests(NeoUnitTestBase):
new_storage = storage_list[0]
self.assertNotEqual(new_storage.getUUID(), old_uuid)
self.assertEqual(new_storage.getState(), NodeStates.RUNNING)
# admin is still here but in UNKNOWN state
# admin is still here but in DOWN state
self.checkNodes([self.master, self.admin, new_storage])
self.assertEqual(self.admin.getState(), NodeStates.UNKNOWN)
self.assertEqual(self.admin.getState(), NodeStates.DOWN)
class MasterDBTests(NeoUnitTestBase):
......@@ -195,7 +195,7 @@ class MasterDBTests(NeoUnitTestBase):
temp_dir = getTempDirectory()
directory = join(temp_dir, 'read_only')
db_file = join(directory, 'not_created')
mkdir(directory, 0400)
mkdir(directory, 0500)
try:
self.assertRaises(IOError, MasterDB, db_file)
finally:
......@@ -212,17 +212,17 @@ class MasterDBTests(NeoUnitTestBase):
try:
db = MasterDB(db_file)
self.assertTrue(exists(db_file), db_file)
chmod(db_file, 0400)
chmod(directory, 0500)
address = ('example.com', 1024)
# Must not raise
db.add(address)
db.addremove(None, address)
# Value is stored
self.assertTrue(address in db, [x for x in db])
self.assertIn(address, db)
# But not visible to a new db instance (write access restored so
# it can be created)
chmod(db_file, 0600)
chmod(directory, 0700)
db2 = MasterDB(db_file)
self.assertFalse(address in db2, [x for x in db2])
self.assertNotIn(address, db2)
finally:
shutil.rmtree(directory)
......@@ -235,18 +235,21 @@ class MasterDBTests(NeoUnitTestBase):
db = MasterDB(db_file)
self.assertTrue(exists(db_file), db_file)
address = ('example.com', 1024)
db.add(address)
db.addremove(None, address)
address2 = ('example.org', 1024)
db.add(address2)
db.addremove(None, address2)
# Values are visible to a new db instance
db2 = MasterDB(db_file)
self.assertTrue(address in db2, [x for x in db2])
self.assertTrue(address2 in db2, [x for x in db2])
db.discard(address)
self.assertIn(address, db2)
self.assertIn(address2, db2)
db.addremove(address, None)
# Create yet another instance (file is not supposed to be shared)
db3 = MasterDB(db_file)
self.assertFalse(address in db3, [x for x in db3])
self.assertTrue(address2 in db3, [x for x in db3])
db2 = MasterDB(db_file)
self.assertNotIn(address, db2)
self.assertIn(address2, db2)
db.remove(address2)
# and again, to test remove()
self.assertNotIn(address2, MasterDB(db_file))
finally:
shutil.rmtree(directory)
......
neo/tests/testPT.py
View file @ f873e151
......@@ -34,7 +34,7 @@ class PartitionTableTests(NeoUnitTestBase):
# check getter
self.assertEqual(cell.getNode(), sn)
self.assertEqual(cell.getState(), CellStates.OUT_OF_DATE)
self.assertEqual(cell.getNodeState(), NodeStates.UNKNOWN)
self.assertEqual(cell.getNodeState(), NodeStates.DOWN)
self.assertEqual(cell.getUUID(), uuid)
self.assertEqual(cell.getAddress(), server)
# check state setter
......@@ -104,18 +104,12 @@ class PartitionTableTests(NeoUnitTestBase):
else:
self.assertEqual(len(pt.partition_list[x]), 0)
# now add broken and down state, must not be taken into account
# now add down state, must not be taken into account
pt._setCell(0, sn1, CellStates.DISCARDED)
for x in xrange(num_partitions):
self.assertEqual(len(pt.partition_list[x]), 0)
self.assertEqual(pt.count_dict[sn1], 0)
sn1.setState(NodeStates.BROKEN)
self.assertRaises(PartitionTableException, pt._setCell,
0, sn1, CellStates.UP_TO_DATE)
for x in xrange(num_partitions):
self.assertEqual(len(pt.partition_list[x]), 0)
self.assertEqual(pt.count_dict[sn1], 0)
sn1.setState(NodeStates.DOWN)
sn1.setState(NodeStates.UNKNOWN)
self.assertRaises(PartitionTableException, pt._setCell,
0, sn1, CellStates.UP_TO_DATE)
for x in xrange(num_partitions):
......@@ -331,7 +325,7 @@ class PartitionTableTests(NeoUnitTestBase):
self.assertFalse(pt.operational())
# adding a node in all partition
sn1 = createStorage()
sn1.setState(NodeStates.TEMPORARILY_DOWN)
sn1.setState(NodeStates.DOWN)
for x in xrange(num_partitions):
pt._setCell(x, sn1, CellStates.FEEDING)
self.assertTrue(pt.filled())
......
neo/tests/threaded/__init__.py
View file @ f873e151
......@@ -35,7 +35,7 @@ from neo.lib.connection import BaseConnection, \
from neo.lib.connector import SocketConnector, ConnectorException
from neo.lib.handler import EventHandler
from neo.lib.locking import SimpleQueue
from neo.lib.protocol import ClusterStates, NodeStates, NodeTypes, Packets
from neo.lib.protocol import ClusterStates, Enum, NodeStates, NodeTypes, Packets
from neo.lib.util import cached_property, parseMasterList, p64
from .. import NeoTestBase, Patch, getTempDirectory, setupMySQLdb, \
ADDRESS_TYPE, IP_VERSION_FORMAT_DICT, DB_PREFIX, DB_SOCKET, DB_USER
......@@ -339,10 +339,10 @@ class ServerNode(Node):
if not address:
address = self.newAddress()
if cluster is None:
master_nodes = kw.get('master_nodes', ())
master_nodes = ()
name = kw.get('name', 'test')
else:
master_nodes = kw.get('master_nodes', cluster.master_nodes)
master_nodes = cluster.master_nodes
name = kw.get('name', cluster.name)
port = address[1]
if address is not BIND:
......@@ -354,7 +354,7 @@ class ServerNode(Node):
self.daemon = True
self.node_name = '%s_%u' % (self.node_type, port)
kw.update(getCluster=name, getBind=address,
getMasters=master_nodes and parseMasterList(master_nodes, address))
getMasters=master_nodes and parseMasterList(master_nodes))
# -> app.__init__() ; Mock serves as config
super(ServerNode, self).__init__(Mock(kw))
......@@ -782,27 +782,39 @@ class NEOCluster(object):
def __exit__(self, t, v, tb):
self.stop(None)
def start(self, storage_list=None, fast_startup=False):
def start(self, storage_list=None, master_list=None, recovering=False):
self.started = True
self._patch()
self.neoctl = NeoCTL(self.admin.getVirtualAddress(), ssl=self.SSL)
for node_type in 'master', 'admin':
for node in getattr(self, node_type + '_list'):
for node in self.master_list if master_list is None else master_list:
node.start()
for node in self.admin_list:
node.start()
Serialized.tic()
if fast_startup:
self.startCluster()
if storage_list is None:
storage_list = self.storage_list
for node in storage_list:
node.start()
Serialized.tic()
if not fast_startup:
if recovering:
expected_state = ClusterStates.RECOVERING
else:
self.startCluster()
Serialized.tic()
expected_state = ClusterStates.RUNNING, ClusterStates.BACKINGUP
self.checkStarted(expected_state, storage_list)
def checkStarted(self, expected_state, storage_list=None):
if isinstance(expected_state, Enum.Item):
expected_state = expected_state,
state = self.neoctl.getClusterState()
assert state in (ClusterStates.RUNNING, ClusterStates.BACKINGUP), state
self.enableStorageList(storage_list)
assert state in expected_state, state
expected_state = (NodeStates.PENDING
if state == ClusterStates.RECOVERING
else NodeStates.RUNNING)
for node in self.storage_list if storage_list is None else storage_list:
state = self.getNodeState(node)
assert state == expected_state, (node, state)
def stop(self, clear_database=False, __print_exc=traceback.print_exc, **kw):
if self.started:
......
neo/tests/threaded/test.py
View file @ f873e151
......@@ -34,9 +34,9 @@ from neo.lib.connection import ConnectionClosed, \
from neo.lib.exception import DatabaseFailure, StoppedOperation
from neo.lib.handler import DelayEvent
from neo.lib import logging
from neo.lib.protocol import CellStates, ClusterStates, NodeStates, Packets, \
Packet, uuid_str, ZERO_OID, ZERO_TID
from .. import expectedFailure, Patch, TransactionalResource
from neo.lib.protocol import (CellStates, ClusterStates, NodeStates, NodeTypes,
Packets, Packet, uuid_str, ZERO_OID, ZERO_TID)
from .. import expectedFailure, unpickle_state, Patch, TransactionalResource
from . import ClientApplication, ConnectionFilter, LockLock, NEOThreadedTest, \
RandomConflictDict, ThreadId, with_cluster
from neo.lib.util import add64, makeChecksum, p64, u64
......@@ -552,7 +552,8 @@ class Test(NEOThreadedTest):
# restart it with one storage only
if 1:
cluster.start(storage_list=(s1,))
self.assertEqual(NodeStates.UNKNOWN, cluster.getNodeState(s2))
self.assertEqual(NodeStates.DOWN,
cluster.getNodeState(s2))
@with_cluster(storage_count=2, partitions=2, replicas=1)
def testRestartStoragesWithReplicas(self, cluster):
......@@ -838,12 +839,6 @@ class Test(NEOThreadedTest):
@with_cluster(master_count=3, partitions=10, replicas=1, storage_count=3)
def testShutdown(self, cluster):
# NOTE vvv
# BUG: Due to bugs in election, master nodes sometimes crash, or they
# declare themselves primary too quickly, but issues seem to be
# only reproducible with SSL enabled.
self._testShutdown(cluster)
def _testShutdown(self, cluster):
def before_finish(_):
# tell admin to shutdown the cluster
cluster.neoctl.setClusterState(ClusterStates.STOPPING)
......@@ -1226,13 +1221,10 @@ class Test(NEOThreadedTest):
@with_cluster(start_cluster=0, storage_count=3, autostart=3)
def testAutostart(self, cluster):
def startCluster(orig):
getClusterState = cluster.neoctl.getClusterState
self.assertEqual(ClusterStates.RECOVERING, getClusterState())
cluster.start(cluster.storage_list[:2], recovering=True)
cluster.storage_list[2].start()
with Patch(cluster, startCluster=startCluster):
self.assertEqual(ClusterStates.RUNNING, getClusterState())
cluster.start(cluster.storage_list[:2])
self.tic()
cluster.checkStarted(ClusterStates.RUNNING)
@with_cluster(storage_count=2, partitions=2)
def testAbortVotedTransaction(self, cluster):
......@@ -1490,11 +1482,11 @@ class Test(NEOThreadedTest):
reports a conflict after that this conflict was fully resolved with
another node.
"""
def answerStoreObject(orig, conn, conflict, oid, serial):
def answerStoreObject(orig, conn, conflict, oid):
if not conflict:
p.revert()
ll()
orig(conn, conflict, oid, serial)
orig(conn, conflict, oid)
if 1:
s0, s1 = cluster.storage_list
t1, c1 = cluster.getTransaction()
......@@ -1984,6 +1976,35 @@ class Test(NEOThreadedTest):
@with_cluster(replicas=1, partitions=4)
def testNotifyReplicated(self, cluster):
"""
Check replication while several concurrent transactions leads to
conflict resolutions and deadlock avoidances, and in particular the
handling of write-locks when the storage node is about to notify the
master that partitions are replicated.
Transactions are committed in the following order:
- t2
- t4, conflict on 'd'
- t1, deadlock on 'a'
- t3, deadlock on 'b', and 2 conflicts on 'a'
Special care is also taken for the change done by t3 on 'a', to check
that the client resolves conflicts with correct oldSerial:
1. The initial store (a=8) is first delayed by t2.
2. It is then kept aside by the deadlock.
3. On s1, deadlock avoidance happens after t1 stores a=7 and the store
is delayed again. However, it's the contrary on s0, and a conflict
is reported to the client.
4. Second store (a=12) based on t2.
5. t1 finishes and s1 reports the conflict for first store (with t1).
At that point, the base serial of this store is meaningless:
the client only has data for last store (based on t2), and it's its
base serial that must be used. t3 write 15 (and not 19 !).
6. Conflicts for the second store are with t2 and they're ignored
because they're already resolved.
Note that this test method lacks code to enforce some events to happen
in the expected order. Sometimes, the above scenario is not reproduced
entirely, but it's so rare that there's no point in making the code
further complicated.
"""
s0, s1 = cluster.storage_list
s1.stop()
cluster.join((s1,))
......@@ -2029,14 +2050,33 @@ class Test(NEOThreadedTest):
yield 1
self.tic()
self.assertPartitionTable(cluster, 'UO|UU|UU|UU')
def t4_vote(*args, **kw):
def t4_d(*args, **kw):
self.tic()
self.assertPartitionTable(cluster, 'UU|UU|UU|UU')
yield 0
yield 2
# Delay the conflict for the second store of 'a' by t3.
delay_conflict = {s0.uuid: [1], s1.uuid: [1,0]}
def delayConflict(conn, packet):
app = conn.getHandler().app
if (isinstance(packet, Packets.AnswerStoreObject)
and packet.decode()[0]):
conn, = cluster.client.getConnectionList(app)
kw = conn._handlers._pending[0][0][packet._id][3]
return 1 == u64(kw['oid']) and delay_conflict[app.uuid].pop()
def writeA(orig, txn_context, oid, serial, data):
if u64(oid) == 1:
value = unpickle_state(data)['value']
if value > 12:
f.remove(delayConflict)
elif value == 12:
f.add(delayConflict)
return orig(txn_context, oid, serial, data)
###
with ConnectionFilter() as f, \
Patch(cluster.client, _store=writeA), \
self.thread_switcher(threads,
(1, 2, 3, 0, 1, 0, 2, t3_c, 1, 3, 2, t3_resolve, 0, 0, 0,
t1_rebase, 2, t3_b, 3, t4_vote),
t1_rebase, 2, t3_b, 3, t4_d, 0, 2, 2),
('tpc_begin', 'tpc_begin', 'tpc_begin', 'tpc_begin', 2, 1, 1,
3, 3, 4, 4, 3, 1, 'RebaseTransaction', 'RebaseTransaction',
'AnswerRebaseTransaction', 'AnswerRebaseTransaction', 2
......@@ -2128,8 +2168,13 @@ class Test(NEOThreadedTest):
self.assertEqual([6, 9, 6], [r[x].value for x in 'abc'])
self.assertEqual([2, 2], map(end.pop(1).count,
['RebaseTransaction', 'AnswerRebaseTransaction']))
self.assertEqual(end, {0: ['AnswerRebaseTransaction',
'StoreTransaction', 'VoteTransaction']})
# Rarely, there's an extra deadlock for t1:
# 0: ['AnswerRebaseTransaction', 'RebaseTransaction',
# 'RebaseTransaction', 'AnswerRebaseTransaction',
# 'AnswerRebaseTransaction', 2, 3, 1,
# 'StoreTransaction', 'VoteTransaction']
self.assertEqual(end.pop(0)[0], 'AnswerRebaseTransaction')
self.assertFalse(end)
@with_cluster()
def testDelayedStoreOrdering(self, cluster):
......@@ -2221,6 +2266,75 @@ class Test(NEOThreadedTest):
def testConflictAfterDeadlockWithSlowReplica2(self):
self.testConflictAfterDeadlockWithSlowReplica1(True)
@with_cluster(start_cluster=0, master_count=3)
def testElection(self, cluster):
m0, m1, m2 = cluster.master_list
cluster.start(master_list=(m0,), recovering=True)
getClusterState = cluster.neoctl.getClusterState
m0.em.removeReader(m0.listening_conn)
m1.start()
self.tic()
m2.start()
self.tic()
self.assertTrue(m0.primary)
self.assertTrue(m1.primary)
self.assertFalse(m2.primary)
m0.em.addReader(m0.listening_conn)
with ConnectionFilter() as f:
f.delayAcceptIdentification()
self.tic()
self.tic()
self.assertTrue(m0.primary)
self.assertFalse(m1.primary)
self.assertFalse(m2.primary)
self.assertEqual(getClusterState(), ClusterStates.RECOVERING)
cluster.startCluster()
def stop(node):
node.stop()
cluster.join((node,))
node.resetNode()
stop(m1)
self.tic()
self.assertEqual(getClusterState(), ClusterStates.RUNNING)
self.assertTrue(m0.primary)
self.assertFalse(m2.primary)
stop(m0)
self.tic()
self.assertEqual(getClusterState(), ClusterStates.RUNNING)
self.assertTrue(m2.primary)
# Check for proper update of node ids on first NotifyNodeInformation.
stop(m2)
m0.start()
def update(orig, app, timestamp, node_list):
orig(app, timestamp, sorted(node_list, reverse=1))
with Patch(cluster.storage.nm, update=update):
with ConnectionFilter() as f:
f.add(lambda conn, packet:
isinstance(packet, Packets.RequestIdentification)
and packet.decode()[0] == NodeTypes.STORAGE)
self.tic()
m2.start()
self.tic()
self.tic()
self.assertEqual(getClusterState(), ClusterStates.RUNNING)
self.assertTrue(m0.primary)
self.assertFalse(m2.primary)
@with_cluster(start_cluster=0, master_count=2)
def testIdentifyUnknownMaster(self, cluster):
m0, m1 = cluster.master_list
cluster.master_nodes = ()
m0.resetNode()
cluster.start(master_list=(m0,))
m1.start()
self.tic()
self.assertEqual(cluster.neoctl.getClusterState(),
ClusterStates.RUNNING)
self.assertTrue(m0.primary)
self.assertTrue(m0.is_alive())
self.assertFalse(m1.primary)
self.assertTrue(m1.is_alive())
if __name__ == "__main__":
unittest.main()
neo/tests/threaded/testSSL.py
View file @ f873e151
......@@ -15,9 +15,10 @@
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import unittest
from neo.lib.connection import ClientConnection, ListeningConnection
from neo.lib.protocol import Packets
from .. import SSL
from . import NEOCluster, with_cluster, test, testReplication
from .. import Patch, SSL
from . import NEOCluster, test, testReplication
class SSLMixin:
......@@ -36,14 +37,6 @@ class SSLTests(SSLMixin, test.Test):
testDeadlockAvoidance = None # XXX why this fails?
testUndoConflict = testUndoConflictDuringStore = None # XXX why this fails?
if 1:
testShutdownWithSeveralMasterNodes = unittest.skip("fails randomly")(
test.Test.testShutdown.__func__)
@with_cluster(partitions=10, replicas=1, storage_count=3)
def testShutdown(self, cluster):
self._testShutdown(cluster)
def testAbortConnection(self, after_handshake=1):
with self.getLoopbackConnection() as conn:
conn.ask(Packets.Ping())
......@@ -65,6 +58,18 @@ class SSLTests(SSLMixin, test.Test):
def testAbortConnectionBeforeHandshake(self):
self.testAbortConnection(0)
def testSSLVsNoSSL(self):
def __init__(orig, self, app, *args, **kw):
with Patch(app, ssl=None):
orig(self, app, *args, **kw)
for cls in (ListeningConnection, # SSL connecting to non-SSL
ClientConnection, # non-SSL connecting to SSL
):
with Patch(cls, __init__=__init__), \
self.getLoopbackConnection() as conn:
while not conn.isClosed():
conn.em.poll(1)
class SSLReplicationTests(SSLMixin, testReplication.ReplicationTests):
# do not repeat slowest tests with SSL
testBackupNodeLost = testBackupNormalCase = None # TODO recheck
......
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