proxy: add multi-nodes support.

slapos/proxy/schema.sql

---version:10
-CREATE TABLE IF NOT EXISTS software%(version)s (url VARCHAR(255) UNIQUE);
+--version:11
+CREATE TABLE IF NOT EXISTS software%(version)s (
+  url VARCHAR(255),
+  computer_reference VARCHAR(255) DEFAULT 'computer',
+  CONSTRAINT uniq PRIMARY KEY (url, computer_reference)
+);
+
 CREATE TABLE IF NOT EXISTS computer%(version)s (
+  reference VARCHAR(255),
   address VARCHAR(255),
   netmask VARCHAR(255),
-  CONSTRAINT uniq PRIMARY KEY (address, netmask));
+  CONSTRAINT uniq PRIMARY KEY (reference)
+);
 
 CREATE TABLE IF NOT EXISTS partition%(version)s (
-  reference VARCHAR(255) UNIQUE,
+  reference VARCHAR(255),
+  computer_reference VARCHAR(255) DEFAULT 'computer',
   slap_state VARCHAR(255) DEFAULT 'free',
   software_release VARCHAR(255),
   xml TEXT,
@@ -16,11 +24,13 @@ CREATE TABLE IF NOT EXISTS partition%(version)s (
   partition_reference VARCHAR(255),
   requested_by VARCHAR(255), -- only used for debugging,
                              -- slapproxy does not support proper scope
-  requested_state VARCHAR(255) NOT NULL DEFAULT 'started'
+  requested_state VARCHAR(255) NOT NULL DEFAULT 'started',
+  CONSTRAINT uniq PRIMARY KEY (reference, computer_reference)
 );
 
 CREATE TABLE IF NOT EXISTS slave%(version)s (
-  reference VARCHAR(255) UNIQUE,
+  reference VARCHAR(255),
+  computer_reference VARCHAR(255),
   connection_xml TEXT,
   hosted_by VARCHAR(255),
   asked_by VARCHAR(255) -- only used for debugging,
@@ -29,6 +39,7 @@ CREATE TABLE IF NOT EXISTS slave%(version)s (
 
 CREATE TABLE IF NOT EXISTS partition_network%(version)s (
   partition_reference VARCHAR(255),
+  computer_reference VARCHAR(255),
   reference VARCHAR(255),
   address VARCHAR(255),
   netmask VARCHAR(255)

slapos/proxy/views.py

@@ -76,12 +76,12 @@ def partitiondict2partition(partition):
   for key, value in partition.iteritems():
     if type(value) is unicode:
       partition[key] = value.encode()
-  slap_partition = ComputerPartition(app.config['computer_id'],
+  slap_partition = ComputerPartition(partition['computer_reference'],
       partition['reference'])
   slap_partition._software_release_document = None
   slap_partition._requested_state = 'destroyed'
   slap_partition._need_modification = 0
-  slap_partition._instance_guid = partition['reference']
+  slap_partition._instance_guid = '%s-%s' % (partition['computer_reference'], partition['reference'])
 
   if partition['software_release']:
     slap_partition._need_modification = 1
@@ -89,8 +89,8 @@ def partitiondict2partition(partition):
     slap_partition._parameter_dict = xml2dict(partition['xml'])
     address_list = []
     for address in execute_db('partition_network',
-                              'SELECT * FROM %s WHERE partition_reference=?',
-                              [partition['reference']]):
+                              'SELECT * FROM %s WHERE partition_reference=? AND computer_reference=?',
+                              [partition['reference'], partition['computer_reference']]):
       address_list.append((address['reference'], address['address']))
     slap_partition._parameter_dict['ip_list'] = address_list
     slap_partition._parameter_dict['slap_software_type'] = \
@@ -103,7 +103,7 @@ def partitiondict2partition(partition):
     slap_partition._connection_dict = xml2dict(partition['connection_xml'])
     slap_partition._software_release_document = SoftwareRelease(
       software_release=partition['software_release'],
-      computer_guid=app.config['computer_id'])
+      computer_guid=partition['computer_reference'])
 
   return slap_partition
 
@@ -146,37 +146,39 @@ def getComputerInformation():
 @app.route('/getFullComputerInformation', methods=['GET'])
 def getFullComputerInformation():
   computer_id = request.args['computer_id']
-  if app.config['computer_id'] == computer_id:
+  computer_list = execute_db('computer', 'SELECT * FROM %s WHERE reference=?', [computer_id])
+  if len(computer_list) != 1:
+    # Backward compatibility
+    if computer_id != app.config['computer_id']:
+      raise NotFoundError('%s is not registered.' % computer_id)
   slap_computer = Computer(computer_id)
   slap_computer._software_release_list = []
-    for sr in execute_db('software', 'select * from %s'):
+  for sr in execute_db('software', 'select * from %s WHERE computer_reference=?', [computer_id]):
     slap_computer._software_release_list.append(SoftwareRelease(
       software_release=sr['url'], computer_guid=computer_id))
   slap_computer._computer_partition_list = []
-    for partition in execute_db('partition', 'SELECT * FROM %s'):
+  for partition in execute_db('partition', 'SELECT * FROM %s WHERE computer_reference=?', [computer_id]):
     slap_computer._computer_partition_list.append(partitiondict2partition(
       partition))
   return xml_marshaller.xml_marshaller.dumps(slap_computer)
-  else:
-    raise NotFoundError('Only accept request for: %s' % app.config['computer_id'])
 
 @app.route('/setComputerPartitionConnectionXml', methods=['POST'])
 def setComputerPartitionConnectionXml():
   slave_reference = request.form['slave_reference'].encode()
-  computer_partition_id = request.form['computer_partition_id']
-  connection_xml = request.form['connection_xml']
+  computer_partition_id = request.form['computer_partition_id'].encode()
+  computer_id = request.form['computer_id'].encode()
+  connection_xml = request.form['connection_xml'].encode()
   connection_dict = xml_marshaller.xml_marshaller.loads(
-                                            connection_xml.encode())
+                                            connection_xml)
   connection_xml = dict2xml(connection_dict)
   if slave_reference == 'None':
-    query = 'UPDATE %s SET connection_xml=? WHERE reference=?'
-    argument_list = [connection_xml, computer_partition_id.encode()]
+    query = 'UPDATE %s SET connection_xml=? WHERE reference=? AND computer_reference=?'
+    argument_list = [connection_xml, computer_partition_id, computer_id]
     execute_db('partition', query, argument_list)
     return 'done'
   else:
     query = 'UPDATE %s SET connection_xml=? , hosted_by=? WHERE reference=?'
-    argument_list = [connection_xml, computer_partition_id.encode(),
-                     slave_reference]
+    argument_list = [connection_xml, computer_partition_id, slave_reference]
     execute_db('slave', query, argument_list)
     return 'done'
 
@@ -228,47 +230,40 @@ def useComputer():
 def loadComputerConfigurationFromXML():
   xml = request.form['xml']
   computer_dict = xml_marshaller.xml_marshaller.loads(str(xml))
-  if app.config['computer_id'] == computer_dict['reference']:
-    execute_db('computer', 'INSERT OR REPLACE INTO %s values(:address, :netmask)',
+  execute_db('computer', 'INSERT OR REPLACE INTO %s values(:reference, :address, :netmask)',
              computer_dict)
   for partition in computer_dict['partition_list']:
-
-      execute_db('partition', 'INSERT OR IGNORE INTO %s (reference) values(:reference)', partition)
-      execute_db('partition_network', 'DELETE FROM %s WHERE partition_reference = ?', [partition['reference']])
+    partition['computer_reference'] = computer_dict['reference']
+    execute_db('partition', 'INSERT OR IGNORE INTO %s (reference, computer_reference) values(:reference, :computer_reference)', partition)
+    execute_db('partition_network', 'DELETE FROM %s WHERE partition_reference = ? AND computer_reference = ?',
+               [partition['reference'], partition['computer_reference']])
     for address in partition['address_list']:
       address['reference'] = partition['tap']['name']
       address['partition_reference'] = partition['reference']
-        execute_db('partition_network', 'INSERT OR REPLACE INTO %s (reference, partition_reference, address, netmask) values(:reference, :partition_reference, :addr, :netmask)', address)
+      execute_db('partition_network', 'INSERT OR REPLACE INTO %s (reference, partition_reference, computer_reference, address, netmask) values(:reference, :partition_reference, :computer_reference, :addr, :netmask)', address)
 
   return 'done'
-  else:
-    raise UnauthorizedError('Only accept request for: %s' % app.config['computer_id'])
 
 @app.route('/registerComputerPartition', methods=['GET'])
 def registerComputerPartition():
-  computer_reference = request.args['computer_reference']
-  computer_partition_reference = request.args['computer_partition_reference']
-  if app.config['computer_id'] == computer_reference:
-    partition = execute_db('partition', 'SELECT * FROM %s WHERE reference=?',
-      [computer_partition_reference.encode()], one=True)
+  computer_reference = request.args['computer_reference'].encode()
+  computer_partition_reference = request.args['computer_partition_reference'].encode()
+  partition = execute_db('partition', 'SELECT * FROM %s WHERE reference=? and computer_reference=?',
+      [computer_partition_reference, computer_reference], one=True)
   if partition is None:
     raise UnauthorizedError
   return xml_marshaller.xml_marshaller.dumps(
       partitiondict2partition(partition))
-  else:
-    raise UnauthorizedError('Only accept request for: %s' % app.config['computer_id'])
 
 @app.route('/supplySupply', methods=['POST'])
 def supplySupply():
   url = request.form['url']
   computer_id = request.form['computer_id']
-  if app.config['computer_id'] == computer_id:
   if request.form['state'] == 'destroyed':
-      execute_db('software', 'DELETE FROM %s WHERE url = ?', [url])
-    else:
-      execute_db('software', 'INSERT OR REPLACE INTO %s VALUES(?)', [url])
+    execute_db('software', 'DELETE FROM %s WHERE url = ? AND computer_reference=?',
+               [url, computer_id])
   else:
-    raise UnauthorizedError('Only accept request for: %s' % app.config['computer_id'])
+    execute_db('software', 'INSERT OR REPLACE INTO %s VALUES(?, ?)', [url, computer_id])
   return '%r added' % url
 
 
@@ -286,21 +281,22 @@ def requestComputerPartition():
 def softwareInstanceRename():
   new_name = request.form['new_name'].encode()
   computer_partition_id = request.form['computer_partition_id'].encode()
+  computer_id = request.form['computer_id'].encode()
 
-  q = 'UPDATE %s SET partition_reference = ? WHERE reference = ?'
-  execute_db('partition', q, [new_name, computer_partition_id])
+  q = 'UPDATE %s SET partition_reference = ? WHERE reference = ? AND computer_reference = ?'
+  execute_db('partition', q, [new_name, computer_partition_id, computer_id])
   return 'done'
 
 @app.route('/getComputerPartitionStatus', methods=['GET'])
 def getComputerPartitionStatus():
-  # XXX: not implemented
-  return xml_marshaller.xml_marshaller.dumps('')
+  return xml_marshaller.xml_marshaller.dumps('Not implemented.')
 
 def request_not_shared():
   software_release = request.form['software_release'].encode()
   # some supported parameters
   software_type = request.form.get('software_type').encode()
   partition_reference = request.form.get('partition_reference', '').encode()
+  filter_kw = request.form.get('filter_xml', None)
   partition_id = request.form.get('computer_partition_id', '').encode()
   partition_parameter_kw = request.form.get('partition_parameter_xml', None)
   requested_state = xml_marshaller.xml_marshaller.loads(request.form.get('state').encode())
@@ -309,6 +305,11 @@ def request_not_shared():
                                               partition_parameter_kw.encode())
   else:
     partition_parameter_kw = {}
+  if filter_kw:
+    filter_kw = xml_marshaller.xml_marshaller.loads(filter_kw.encode())
+    requested_computer_id = filter_kw.get('computer_guid', app.config['computer_id'])
+  else:
+    requested_computer_id = app.config['computer_id']
 
   instance_xml = dict2xml(partition_parameter_kw)
   args = []
@@ -327,9 +328,12 @@ def request_not_shared():
     a(requested_state)
 
   # If partition doesn't exist: create it and insert parameters
+  # XXX add support for automatic deployment on specific node depending on available SR and partitions on each Node.
+  # Note: only deploy on default node if SLA not specified
   if partition is None:
     partition = execute_db('partition',
-        'SELECT * FROM %s WHERE slap_state="free"', (), one=True)
+        'SELECT * FROM %s WHERE slap_state="free" and computer_reference=?',
+        [requested_computer_id], one=True)
     if partition is None:
       app.logger.warning('No more free computer partition')
       abort(404)
@@ -355,12 +359,14 @@ def request_not_shared():
   if instance_xml:
     q += ' ,xml=?'
     a(instance_xml)
-  q += ' WHERE reference=?'
+  q += ' WHERE reference=? AND computer_reference=?'
   a(partition['reference'].encode())
+  a(partition['computer_reference'].encode())
+
   execute_db('partition', q, args)
   args = []
-  partition = execute_db('partition', 'SELECT * FROM %s WHERE reference=?',
-      [partition['reference'].encode()], one=True)
+  partition = execute_db('partition', 'SELECT * FROM %s WHERE reference=? and computer_reference=?',
+      [partition['reference'].encode(), partition['computer_reference'].encode()], one=True)
   address_list = []
   for address in execute_db('partition_network', 'SELECT * FROM %s WHERE partition_reference=?', [partition['reference']]):
     address_list.append((address['reference'], address['address']))
@@ -371,15 +377,14 @@ def request_not_shared():
   software_instance = SoftwareInstance(_connection_dict=xml2dict(partition['connection_xml']),
                                        _parameter_dict=xml2dict(partition['xml']),
                                        connection_xml=partition['connection_xml'],
-                                       slap_computer_id=app.config['computer_id'],
+                                       slap_computer_id=partition['computer_reference'].encode(),
                                        slap_computer_partition_id=partition['reference'],
                                        slap_software_release_url=partition['software_release'],
                                        slap_server_url='slap_server_url',
                                        slap_software_type=partition['software_type'],
-                                       _instance_guid=partition['reference'],
+                                       _instance_guid='%s-%s' % (partition['computer_reference'].encode(), partition['reference']),
                                        _requested_state=requested_state,
                                        ip_list=address_list)
-
   return xml_marshaller.xml_marshaller.dumps(software_instance)
 
 
@@ -407,14 +412,20 @@ def request_slave():
   else:
     partition_parameter_kw = {}
 
-  filter_kw = xml_marshaller.xml_marshaller.loads(request.form.get('filter_xml').encode())
+  filter_kw = request.form.get('filter_xml', None)
+  if filter_kw:
+    filter_kw = xml_marshaller.xml_marshaller.loads(filter_kw.encode())
+    requested_computer_id = filter_kw.get('computer_guid', app.config['computer_id'])
+  else:
+    requested_computer_id = app.config['computer_id']
 
   instance_xml = dict2xml(partition_parameter_kw)
   # We will search for a master corresponding to request
   args = []
   a = args.append
-  q = 'SELECT * FROM %s WHERE software_release=?'
+  q = 'SELECT * FROM %s WHERE software_release=? and computer_reference=?'
   a(software_release)
+  a(requested_computer_id)
   if software_type:
     q += ' AND software_type=?'
     a(software_type)
@@ -455,33 +466,34 @@ def request_slave():
   a = args.append
   q = 'UPDATE %s SET slave_instance_list=?'
   a(xml_marshaller.xml_marshaller.dumps(slave_instance_list))
-  q += ' WHERE reference=?'
+  q += ' WHERE reference=? and computer_reference=?'
   a(partition['reference'].encode())
+  a(requested_computer_id)
   execute_db('partition', q, args)
   args = []
-  partition = execute_db('partition', 'SELECT * FROM %s WHERE reference=?',
-      [partition['reference'].encode()], one=True)
+  partition = execute_db('partition', 'SELECT * FROM %s WHERE reference=? and computer_reference=?',
+      [partition['reference'].encode(), requested_computer_id], one=True)
 
   # Add slave to slave table if not there
-  slave = execute_db('slave', 'SELECT * FROM %s WHERE reference=?',
-                     [slave_reference], one=True)
+  slave = execute_db('slave', 'SELECT * FROM %s WHERE reference=? and computer_reference=?',
+                     [slave_reference, requested_computer_id], one=True)
   if slave is None:
     execute_db('slave',
-               'INSERT OR IGNORE INTO %s (reference,asked_by,hosted_by) values(:reference,:asked_by,:hosted_by)',
-               [slave_reference, partition_id, partition['reference']])
-    slave = execute_db('slave', 'SELECT * FROM %s WHERE reference=?',
-                       [slave_reference], one=True)
+               'INSERT OR IGNORE INTO %s (reference,computer_reference,asked_by,hosted_by) values(:reference,:computer_reference,:asked_by,:hosted_by)',
+               [slave_reference, requested_computer_id, partition_id, partition['reference']])
+    slave = execute_db('slave', 'SELECT * FROM %s WHERE reference=? and computer_reference=?',
+                       [slave_reference, requested_computer_id], one=True)
 
   address_list = []
   for address in execute_db('partition_network',
-                            'SELECT * FROM %s WHERE partition_reference=?',
-                            [partition['reference']]):
+                            'SELECT * FROM %s WHERE partition_reference=? and computer_reference=?',
+                            [partition['reference'], partition['computer_reference']]):
     address_list.append((address['reference'], address['address']))
 
   # XXX it should be ComputerPartition, not a SoftwareInstance
   software_instance = SoftwareInstance(_connection_dict=xml2dict(slave['connection_xml']),
                                        _parameter_dict=xml2dict(instance_xml),
-                                       slap_computer_id=app.config['computer_id'],
+                                       slap_computer_id=partition['computer_reference'],
                                        slap_computer_partition_id=slave['hosted_by'],
                                        slap_software_release_url=partition['software_release'],
                                        slap_server_url='slap_server_url',
@@ -505,5 +517,6 @@ def getSoftwareReleaseListFromSoftwareProduct():
       software_release_url_list =\
           [app.config['software_product_list'][software_product_reference]]
     else:
-      software_release_url_list =[]
+      software_release_url_list = []
     return xml_marshaller.xml_marshaller.dumps(software_release_url_list)
+

slapos/tests/slapproxy.py

@@ -34,6 +34,7 @@ import shutil
 import tempfile
 import unittest
 import xml_marshaller
+from xml_marshaller.xml_marshaller import loads, dumps
 
 import slapos.proxy
 import slapos.proxy.views as views
@@ -104,13 +105,15 @@ database_uri = %(tempdir)s/lib/proxy.db
     self.app_config = views.app.config
     self.app = views.app.test_client()
 
-  def add_free_partition(self, partition_amount):
+  def add_free_partition(self, partition_amount, computer_id=None):
     """
     Will simulate a slapformat first run
     and create "partition_amount" partitions
     """
+    if not computer_id:
+      computer_id = self.computer_id
     computer_dict = {
-        'reference': self.computer_id,
+        'reference': computer_id,
         'address': '123.456.789',
         'netmask': 'fffffffff',
         'partition_list': [],
@@ -243,18 +246,16 @@ class TestInformation(BasicMixin, unittest.TestCase):
     )
 
 
-class MasterMixin(BasicMixin):
+class MasterMixin(BasicMixin, unittest.TestCase):
   """
   Define advanced tool for test proxy simulating behavior slap library tools
   """
-
-  def request(self, software_release, software_type, partition_reference,
+  def _requestComputerPartition(self, software_release, software_type, partition_reference,
               partition_id,
               shared=False, partition_parameter_kw=None, filter_kw=None,
               state=None):
     """
-    Simulate a request with above parameters
-    Return response by server (a computer partition or an error)
+    Check parameters, call requestComputerPartition server method and return result
     """
     if partition_parameter_kw is None:
       partition_parameter_kw = {}
@@ -276,13 +277,17 @@ class MasterMixin(BasicMixin):
         'filter_xml': xml_marshaller.xml_marshaller.dumps(filter_kw),
         'state': xml_marshaller.xml_marshaller.dumps(state),
     }
-    rv = self.app.post('/requestComputerPartition',
-                       data=request_dict)
+    return self.app.post('/requestComputerPartition', data=request_dict)
+	
+  def request(self, *args, **kwargs):
+    """
+    Simulate a request with above parameters
+    Return response by server (a computer partition or an error)
+    """
+    rv = self._requestComputerPartition(*args, **kwargs)
+    self.assertEqual(rv._status_code, 200)
     xml = rv.data
-    try:
     software_instance = xml_marshaller.xml_marshaller.loads(xml)
-    except:
-      raise WrongFormat("Could not be parsed by xml_marshaller")
 
     computer_partition = slapos.slap.ComputerPartition(
         software_instance.slap_computer_id,
@@ -291,6 +296,14 @@ class MasterMixin(BasicMixin):
     computer_partition.__dict__.update(software_instance.__dict__)
     return computer_partition
 
+  def supply(self, url, computer_id=None, state=''):
+    if not computer_id:
+      computer_id = self.computer_id
+    request_dict = {'url':url, 'computer_id': computer_id, 'state':state}
+    rv = self.app.post('/supplySupply',
+                       data=request_dict)
+    # XXX return a Software Release
+
   def setConnectionDict(self, partition_id,
                         connection_dict, slave_reference=None):
     self.app.post('/setComputerPartitionConnectionXml', data={
@@ -310,7 +323,7 @@ class MasterMixin(BasicMixin):
         return instance
 
 
-class TestRequest(MasterMixin, unittest.TestCase):
+class TestRequest(MasterMixin):
   """
   Set of tests for requests
   """
@@ -320,9 +333,9 @@ class TestRequest(MasterMixin, unittest.TestCase):
     Check that all different parameters related to requests (like instance_guid, state) are set and consistent
     """
     self.add_free_partition(1)
-    partition = self.request('http://sr//', None, 'Maria', 'slappart0')
+    partition = self.request('http://sr//', None, 'MyFirstInstance', 'slappart0')
     self.assertEqual(partition.getState(), 'started')
-    self.assertEqual(partition.getInstanceGuid(), 'slappart0') # XXX define me
+    self.assertEqual(partition.getInstanceGuid(), 'computer-slappart0')
 
   def test_two_request_one_partition_free(self):
     """
@@ -331,10 +344,10 @@ class TestRequest(MasterMixin, unittest.TestCase):
     """
     self.add_free_partition(1)
     self.assertIsInstance(self.request('http://sr//', None,
-                                       'Maria', 'slappart2'),
+                                       'MyFirstInstance', 'slappart2'),
                           slapos.slap.ComputerPartition)
     self.assertIsInstance(self.request('http://sr//', None,
-                                       'Maria', 'slappart3'),
+                                       'MyFirstInstance', 'slappart3'),
                           slapos.slap.ComputerPartition)
 
   def test_two_request_two_partition_free(self):
@@ -344,10 +357,10 @@ class TestRequest(MasterMixin, unittest.TestCase):
     """
     self.add_free_partition(2)
     self.assertIsInstance(self.request('http://sr//', None,
-                                       'Maria', 'slappart2'),
+                                       'MyFirstInstance', 'slappart2'),
                           slapos.slap.ComputerPartition)
     self.assertIsInstance(self.request('http://sr//', None,
-                                       'Maria', 'slappart3'),
+                                       'MyFirstInstance', 'slappart3'),
                           slapos.slap.ComputerPartition)
 
   def test_two_same_request_from_one_partition(self):
@@ -356,8 +369,8 @@ class TestRequest(MasterMixin, unittest.TestCase):
     """
     self.add_free_partition(2)
     self.assertEqual(
-        self.request('http://sr//', None, 'Maria', 'slappart2').__dict__,
-        self.request('http://sr//', None, 'Maria', 'slappart2').__dict__)
+        self.request('http://sr//', None, 'MyFirstInstance', 'slappart2').__dict__,
+        self.request('http://sr//', None, 'MyFirstInstance', 'slappart2').__dict__)
 
   def test_two_requests_with_different_parameters_but_same_reference(self):
     """
@@ -368,12 +381,12 @@ class TestRequest(MasterMixin, unittest.TestCase):
     wanted_domain1 = 'fou.org'
     wanted_domain2 = 'carzy.org'
 
-    request1 = self.request('http://sr//', None, 'Maria', 'slappart2',
+    request1 = self.request('http://sr//', None, 'MyFirstInstance', 'slappart2',
                             partition_parameter_kw={'domain': wanted_domain1})
     request1_dict = request1.__dict__
     requested_result1 = self.getPartitionInformation(
         request1_dict['_partition_id'])
-    request2 = self.request('http://sr1//', 'Papa', 'Maria', 'slappart2',
+    request2 = self.request('http://sr1//', 'Papa', 'MyFirstInstance', 'slappart2',
                             partition_parameter_kw={'domain': wanted_domain2})
     request2_dict = request2.__dict__
     requested_result2 = self.getPartitionInformation(
@@ -403,8 +416,8 @@ class TestRequest(MasterMixin, unittest.TestCase):
     """
     self.add_free_partition(2)
     self.assertEqual(
-        self.request('http://sr//', None, 'Maria', 'slappart2').__dict__,
-        self.request('http://sr//', None, 'Maria', 'slappart3').__dict__)
+        self.request('http://sr//', None, 'MyFirstInstance', 'slappart2').__dict__,
+        self.request('http://sr//', None, 'MyFirstInstance', 'slappart3').__dict__)
 
   def test_two_different_request_from_one_partition(self):
     """
@@ -413,11 +426,11 @@ class TestRequest(MasterMixin, unittest.TestCase):
     """
     self.add_free_partition(2)
     self.assertNotEqual(
-        self.request('http://sr//', None, 'Maria', 'slappart2').__dict__,
+        self.request('http://sr//', None, 'MyFirstInstance', 'slappart2').__dict__,
         self.request('http://sr//', None, 'frontend', 'slappart2').__dict__)
 
 
-class TestSlaveRequest(TestRequest):
+class TestSlaveRequest(MasterMixin):
   """
   Test requests related to slave instances.
   """
@@ -426,8 +439,8 @@ class TestSlaveRequest(TestRequest):
     Slave instance request will fail if no corresponding are found
     """
     self.add_free_partition(2)
-    with self.assertRaises(WrongFormat):
-      self.request('http://sr//', None, 'Maria', 'slappart2', shared=True)
+    rv = self._requestComputerPartition('http://sr//', None, 'MyFirstInstance', 'slappart2', shared=True)
+    self.assertEqual(rv._status_code, 404)
 
   def test_slave_request_set_parameters(self):
     """
@@ -440,10 +453,10 @@ class TestSlaveRequest(TestRequest):
     self.add_free_partition(6)
     # Provide partition
     master_partition_id = self.request('http://sr//', None,
-                                       'Maria', 'slappart4')._partition_id
+                                       'MyFirstInstance', 'slappart4')._partition_id
     # First request of slave instance
     wanted_domain = 'fou.org'
-    self.request('http://sr//', None, 'Maria', 'slappart2', shared=True,
+    self.request('http://sr//', None, 'MyFirstInstance', 'slappart2', shared=True,
                  partition_parameter_kw={'domain': wanted_domain})
     # Get updated information for master partition
     master_partition = self.getPartitionInformation(master_partition_id)
@@ -476,10 +489,10 @@ class TestSlaveRequest(TestRequest):
     self.add_free_partition(6)
     # Provide partition
     master_partition_id = self.request('http://sr//', None,
-                                       'Maria', 'slappart4')._partition_id
+                                       'MyFirstInstance', 'slappart4')._partition_id
     # First request of slave instance
     wanted_domain_1 = 'crazy.org'
-    self.request('http://sr//', None, 'Maria', 'slappart2', shared=True,
+    self.request('http://sr//', None, 'MyFirstInstance', 'slappart2', shared=True,
                  partition_parameter_kw={'domain': wanted_domain_1})
     # Get updated information for master partition
     master_partition = self.getPartitionInformation(master_partition_id)
@@ -488,7 +501,7 @@ class TestSlaveRequest(TestRequest):
 
     # Second request of slave instance
     wanted_domain_2 = 'maluco.org'
-    self.request('http://sr//', None, 'Maria', 'slappart2', shared=True,
+    self.request('http://sr//', None, 'MyFirstInstance', 'slappart2', shared=True,
                  partition_parameter_kw={'domain': wanted_domain_2})
     # Get updated information for master partition
     master_partition = self.getPartitionInformation(master_partition_id)
@@ -511,6 +524,7 @@ class TestSlaveRequest(TestRequest):
     self.request('http://sr//', None, 'MySlaveInstance', 'slappart2', shared=True)
     # Set connection parameter
     master_partition = self.getPartitionInformation(master_partition_id)
+    # XXX change slave reference to be compatible with multiple nodes
     self.setConnectionDict(partition_id=master_partition._partition_id,
                            connection_dict={'foo': 'bar'},
                            slave_reference=master_partition._parameter_dict['slave_instance_list'][0]['slave_reference'])
@@ -533,9 +547,9 @@ class TestSlaveRequest(TestRequest):
     self.add_free_partition(6)
     # Provide partition
     master_partition_id = self.request('http://sr//', None,
-                                       'Maria', 'slappart4')._partition_id
+                                       'MyFirstInstance', 'slappart4')._partition_id
     # First request of slave instance
-    name = 'Maria'
+    name = 'MyFirstInstance'
     requester = 'slappart2'
     our_slave = self.request('http://sr//', None,
                              name, requester, shared=True)
@@ -555,3 +569,275 @@ class TestSlaveRequest(TestRequest):
     self.assertIsInstance(our_slave, slapos.slap.ComputerPartition)
     self.assertEqual(slave_address, our_slave._connection_dict)
 
+class TestMultiNodeSupport(MasterMixin):
+  def test_multi_node_support_different_software_release_list(self):
+    """
+    Test that two different registered computers have their own
+    Software Release list.
+    """
+    self.add_free_partition(6, computer_id='COMP-0')
+    self.add_free_partition(6, computer_id='COMP-1')
+    software_release_1_url = 'http://sr1'
+    software_release_2_url = 'http://sr2'
+    software_release_3_url = 'http://sr3'
+    self.supply(software_release_1_url, 'COMP-0')
+    self.supply(software_release_2_url, 'COMP-1')
+    self.supply(software_release_3_url, 'COMP-0')
+    self.supply(software_release_3_url, 'COMP-1')
+    
+    computer_default = loads(self.app.get('/getFullComputerInformation?computer_id=%s' % self.computer_id).data)
+    computer_0 = loads(self.app.get('/getFullComputerInformation?computer_id=COMP-0').data)
+    computer_1 = loads(self.app.get('/getFullComputerInformation?computer_id=COMP-1').data) 
+    self.assertEqual(len(computer_default._software_release_list), 0)
+    self.assertEqual(len(computer_0._software_release_list), 2)
+    self.assertEqual(len(computer_1._software_release_list), 2)
+
+    self.assertEqual(
+        computer_0._software_release_list[0]._software_release,
+        software_release_1_url
+    )
+    self.assertEqual(
+        computer_0._software_release_list[0]._computer_guid,
+        'COMP-0'
+    )
+
+    self.assertEqual(
+        computer_0._software_release_list[1]._software_release,
+        software_release_3_url
+    )
+    self.assertEqual(
+        computer_0._software_release_list[1]._computer_guid,
+        'COMP-0'
+    )
+
+    self.assertEqual(
+        computer_1._software_release_list[0]._software_release,
+        software_release_2_url
+    )
+    self.assertEqual(
+        computer_1._software_release_list[0]._computer_guid,
+        'COMP-1'
+    )
+
+    self.assertEqual(
+        computer_1._software_release_list[1]._software_release,
+        software_release_3_url
+    )
+    self.assertEqual(
+        computer_1._software_release_list[1]._computer_guid,
+        'COMP-1'
+    )
+
+  def test_multi_node_support_remove_software_release(self):
+    """
+    Test that removing a software from a Computer doesn't
+    affect other computer
+    """
+    software_release_url = 'http://sr'
+    self.add_free_partition(6, computer_id='COMP-0')
+    self.add_free_partition(6, computer_id='COMP-1')
+    self.supply(software_release_url, 'COMP-0')
+    self.supply(software_release_url, 'COMP-1')
+    self.supply(software_release_url, 'COMP-0', state='destroyed')
+    computer_0 = loads(self.app.get('/getFullComputerInformation?computer_id=COMP-0').data)
+    computer_1 = loads(self.app.get('/getFullComputerInformation?computer_id=COMP-1').data)
+
+    self.assertEqual(len(computer_0._software_release_list), 0)
+    self.assertEqual(len(computer_1._software_release_list), 1)
+
+    self.assertEqual(
+        computer_1._software_release_list[0]._software_release,
+        software_release_url
+    )
+    self.assertEqual(
+        computer_1._software_release_list[0]._computer_guid,
+        'COMP-1'
+    )
+
+  def test_multi_node_support_instance_default_computer(self):
+    """
+    Test that instance request behaves correctly with default computer
+    """
+    software_release_url = 'http://sr'
+    computer_0_id = 'COMP-0'
+    computer_1_id = 'COMP-1'
+    self.add_free_partition(6, computer_id=computer_0_id)
+    self.add_free_partition(6, computer_id=computer_1_id)
+
+    # Request without SLA -> goes to default computer only.
+    # It should fail if we didn't registered partitions for default computer
+    # (default computer is always registered)
+    rv = self._requestComputerPartition('http://sr//', None, 'MyFirstInstance', 'slappart2')
+    self.assertEqual(rv._status_code, 404)
+
+    rv = self._requestComputerPartition('http://sr//', None, 'MyFirstInstance', 'slappart2',
+                                        filter_kw={'computer_guid':self.computer_id})
+    self.assertEqual(rv._status_code, 404)
+
+    # Register default computer: deployment works
+    self.add_free_partition(1)
+    self.request('http://sr//', None, 'MyFirstInstance', 'slappart0')
+    computer_default = loads(self.app.get(
+        '/getFullComputerInformation?computer_id=%s' % self.computer_id).data)
+    self.assertEqual(len(computer_default._software_release_list), 0)
+
+    # No free space on default computer: request without SLA fails
+    rv = self._requestComputerPartition('http://sr//', None, 'CanIHasPartition', 'slappart2',
+                                        filter_kw={'computer_guid':self.computer_id})
+    self.assertEqual(rv._status_code, 404)
+
+  def test_multi_node_support_instance(self):
+    """
+    Test that instance request behaves correctly with several
+    registered computers
+    """
+    software_release_url = 'http://sr'
+    computer_0_id = 'COMP-0'
+    computer_1_id = 'COMP-1'
+    software_release_1 = 'http://sr//'
+    software_release_2 = 'http://othersr//'
+
+    self.add_free_partition(2, computer_id=computer_1_id)
+
+    # Deploy to first non-default computer using SLA
+    # It should fail since computer is not registered
+    rv = self._requestComputerPartition(software_release_1, None, 'MyFirstInstance', 'slappart2', filter_kw={'computer_guid':computer_0_id})
+    self.assertEqual(rv._status_code, 404)
+
+    self.add_free_partition(2, computer_id=computer_0_id)
+
+    # Deploy to first non-default computer using SLA
+    partition = self.request(software_release_1, None, 'MyFirstInstance', 'slappart0', filter_kw={'computer_guid':computer_0_id})
+    self.assertEqual(partition.getState(), 'started')
+    self.assertEqual(partition._partition_id, 'slappart0')
+    self.assertEqual(partition._computer_id, computer_0_id)
+    # All other instances should be empty
+    computer_0 = loads(self.app.get('/getFullComputerInformation?computer_id=COMP-0').data)
+    computer_1 = loads(self.app.get('/getFullComputerInformation?computer_id=COMP-1').data)
+    self.assertEqual(computer_0._computer_partition_list[0]._software_release_document._software_release, software_release_1)
+    self.assertTrue(computer_0._computer_partition_list[1]._software_release_document == None)
+    self.assertTrue(computer_1._computer_partition_list[0]._software_release_document == None)
+    self.assertTrue(computer_1._computer_partition_list[1]._software_release_document == None)
+
+    # Deploy to second non-default computer using SLA
+    partition = self.request(software_release_2, None, 'MySecondInstance', 'slappart0', filter_kw={'computer_guid':computer_1_id})
+    self.assertEqual(partition.getState(), 'started')
+    self.assertEqual(partition._partition_id, 'slappart0')
+    self.assertEqual(partition._computer_id, computer_1_id)
+    # The two remaining instances should be free, and MyfirstInstance should still be there
+    computer_0 = loads(self.app.get('/getFullComputerInformation?computer_id=COMP-0').data)
+    computer_1 = loads(self.app.get('/getFullComputerInformation?computer_id=COMP-1').data)
+    self.assertEqual(computer_0._computer_partition_list[0]._software_release_document._software_release, software_release_1)
+    self.assertTrue(computer_0._computer_partition_list[1]._software_release_document == None)
+    self.assertEqual(computer_1._computer_partition_list[0]._software_release_document._software_release, software_release_2)
+    self.assertTrue(computer_1._computer_partition_list[1]._software_release_document == None)
+
+  def test_multi_node_support_change_instance_state(self):
+    """
+    Test that destroying an instance (i.e change state) from a Computer doesn't
+    affect other computer
+    """
+    software_release_url = 'http://sr'
+    computer_0_id = 'COMP-0'
+    computer_1_id = 'COMP-1'
+    self.add_free_partition(6, computer_id=computer_0_id)
+    self.add_free_partition(6, computer_id=computer_1_id)
+    partition_first = self.request('http://sr//', None, 'MyFirstInstance', 'slappart0', filter_kw={'computer_guid':computer_0_id})
+    partition_second = self.request('http://sr//', None, 'MySecondInstance', 'slappart0', filter_kw={'computer_guid':computer_1_id})
+
+    partition_first = self.request('http://sr//', None, 'MyFirstInstance', 'slappart0', filter_kw={'computer_guid':computer_0_id}, state='stopped')
+
+    computer_0 = loads(self.app.get('/getFullComputerInformation?computer_id=COMP-0').data)
+    computer_1 = loads(self.app.get('/getFullComputerInformation?computer_id=COMP-1').data)
+    self.assertEqual(computer_0._computer_partition_list[0].getState(), 'stopped')
+    self.assertEqual(computer_0._computer_partition_list[1].getState(), 'destroyed')
+    self.assertEqual(computer_1._computer_partition_list[0].getState(), 'started')
+    self.assertEqual(computer_1._computer_partition_list[1].getState(), 'destroyed')
+
+  def test_multi_node_support_same_reference(self):
+    """
+    Test that requesting an instance with same reference to two
+    different nodes behaves like master: once an instance is assigned to a node,
+    changing SLA will not change node.
+    """
+    software_release_url = 'http://sr'
+    computer_0_id = 'COMP-0'
+    computer_1_id = 'COMP-1'
+    self.add_free_partition(2, computer_id=computer_0_id)
+    self.add_free_partition(2, computer_id=computer_1_id)
+    partition = self.request('http://sr//', None, 'MyFirstInstance', 'slappart0', filter_kw={'computer_guid':computer_0_id})
+    partition = self.request('http://sr//', None, 'MyFirstInstance', 'slappart0', filter_kw={'computer_guid':computer_1_id})
+
+    self.assertEqual(partition._computer_id, computer_0_id)
+
+    computer_1 = loads(self.app.get('/getFullComputerInformation?computer_id=COMP-1').data)
+    self.assertTrue(computer_1._computer_partition_list[0]._software_release_document == None)
+    self.assertTrue(computer_1._computer_partition_list[1]._software_release_document == None)
+
+  def test_multi_node_support_slave_instance(self):
+    """
+    Test that slave instances are correctly deployed if SLA is specified
+    but deployed only on default computer if not specified (i.e not deployed
+    if default computer doesn't have corresponding master instance).
+    """
+    computer_0_id = 'COMP-0'
+    computer_1_id = 'COMP-1'
+    self.add_free_partition(2, computer_id=computer_0_id)
+    self.add_free_partition(2, computer_id=computer_1_id)
+    self.add_free_partition(2)
+    self.request('http://sr2//', None, 'MyFirstInstance', 'slappart0', filter_kw={'computer_guid':computer_0_id})
+    self.request('http://sr//', None, 'MyOtherInstance', 'slappart0', filter_kw={'computer_guid':computer_1_id})
+
+    # Request slave without SLA: will fail
+    rv = self._requestComputerPartition('http://sr//', None, 'MySlaveInstance', 'slappart2', shared=True)
+    self.assertEqual(rv._status_code, 404)
+
+    # Request slave with SLA on incorrect computer: will fail
+    rv = self._requestComputerPartition('http://sr//', None, 'MySlaveInstance', 'slappart2', shared=True, filter_kw={'computer_guid':computer_0_id})
+    self.assertEqual(rv._status_code, 404)
+
+    # Request computer on correct computer: will succeed
+    partition = self.request('http://sr//', None, 'MySlaveInstance', 'slappart2', shared=True, filter_kw={'computer_guid':computer_1_id})
+    self.assertEqual(partition._computer_id, computer_1_id)
+
+  def test_multi_node_support_instance_guid(self):
+    """
+    Test that instance_guid support behaves correctly with multiple nodes.
+    Warning: proxy doesn't gives unique id of instance, but gives instead unique id
+    of partition.
+    """
+    computer_0_id = 'COMP-0'
+    computer_1_id = 'COMP-1'
+    self.add_free_partition(2, computer_id=computer_0_id)
+    self.add_free_partition(2, computer_id=computer_1_id)
+    self.add_free_partition(2)
+    partition_computer_0 = self.request('http://sr2//', None, 'MyFirstInstance', 'slappart0', filter_kw={'computer_guid':computer_0_id})
+    partition_computer_1 = self.request('http://sr//', None, 'MyOtherInstance', 'slappart0', filter_kw={'computer_guid':computer_1_id})
+    partition_computer_default = self.request('http://sr//', None, 'MyThirdInstance', 'slappart0') 
+
+    self.assertEqual(partition_computer_0.getInstanceGuid(), 'COMP-0-slappart0')
+    self.assertEqual(partition_computer_1.getInstanceGuid(), 'COMP-1-slappart0')
+    self.assertEqual(partition_computer_default.getInstanceGuid(), 'computer-slappart0')
+
+  def test_multi_node_support_getComputerInformation(self):
+    """
+    Test that computer information will not be given if computer is not registered.
+    Test that it still should work for the 'default' computer specified in slapos config
+    even if not yet registered.
+    Test that computer information is given if computer is registered. 
+    """
+    new_computer_id = '%s42' % self.computer_id
+    with self.assertRaises(slapos.slap.NotFoundError):
+      self.app.get('/getComputerInformation?computer_id=%s42' % new_computer_id)
+
+    try:
+      self.app.get('/getComputerInformation?computer_id=%s' % self.computer_id)
+    except slapos.slap.NotFoundError:
+      self.fail('Could not fetch informations for default computer.')
+
+    self.add_free_partition(1, computer_id=new_computer_id)
+    try:
+      self.app.get('/getComputerInformation?computer_id=%s' % new_computer_id)
+    except slapos.slap.NotFoundError:
+      self.fail('Could not fetch informations for registered computer.')
+