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Commit 577b9075 authored by Antoine Catton's avatar Antoine Catton
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Finishing wordpress http agent.

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slapos/wordpress/ia/__init__.py
View file @ 577b9075
##############################################################################
#
# Copyright (c) 2010 Vifib SARL and Contributors. All Rights Reserved.
#
# WARNING: This program as such is intended to be used by professional
# programmers who take the whole responsibility of assessing all potential
# consequences resulting from its eventual inadequacies and bugs
# End users who are looking for a ready-to-use solution with commercial
# guarantees and support are strongly adviced to contract a Free Software
# Service Company
#
# 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 3
# 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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
##############################################################################
import argparse
from datetime import datetime
import httplib
import json
import os
import urllib2
import urlparse
import uuid
from collections import deque
import atomize
from flask import Flask
from flask import abort
from flask import request
from flask import make_response
from sqlalchemy import desc
from sqlalchemy import asc
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker
from slapos.wordpress.ia.data import Base, Component, Entry, Config, Peer
app = Flask(__name__)
app.config.from_envvar('CONFIG')
DATABASE_PATH = app.config['DATABASE_PATH']
if not os.path.exists(DATABASE_PATH):
open(DATABASE_PATH, 'w').close() # Just a touch
engine = create_engine('sqlite:///%s' % os.path.abspath(DATABASE_PATH))
Base.metadata.create_all(engine)
Session = sessionmaker()
Session.configure(bind=engine)
N_FEED_ENTRY_DEFAULT = 50
N_FEED_ENTRY_MAX = 500
def get_session_id(session):
id_config = session.query(Config).filter(Config.id == 'id').first()
if id_config is None:
app_id = uuid.uuid4().urn
session.add(Config(id='id', value=app_id))
session.commit()
else:
app_id = id_config.value
return app_id
def get_master(session):
app_id = get_session_id(session)
candidate_list = session.query(Peer).filter(Peer.id > app_id)\
.order_by(asc(Peer.id))
for candidate in candidate_list:
try:
candidate_id = uuid.UUID(candidate.id)
id_url = urlparse.urljoin(candidate.url, 'id')
read_id = uuid.UUID(urllib2.urlopen(id_url).read())
if candidate_id == read_id:
return candidate
except SystemExit:
raise
except:
pass
return None # Master is me
@app.route('/getPeers')
def get_peers():
result = make_response(json.dumps(app.config.get('PEERS', [])))
result.headers['Content-Type'] = 'application/json'
return result
@app.route('/refreshMesh')
def refresh_mesh():
global app
session = Session()
session.query(Peer).delete()
seen = deque([get_session_id(session)])
to_see = deque(app.config.get('PEERS', []))
while to_see:
url = to_see.pop()
try:
id_url = urlparse.urljoin(url, 'id')
id_ = uuid.UUID(urllib2.urlopen(id_url).read())
if id_ not in seen:
peer_entry = Peer(id=id_.urn, url=url)
session.add(peer_entry)
peers_list_url = urlparse.urljoin(url, 'getPeers')
peers_url = json.loads(urllib2.urlopen(peers_list_url))
to_see.extend(peers_url)
except SystemExit:
pass
except:
pass
session.commit()
return '', httplib.NO_CONTENT
@app.route("/master/vote")
def vote_for_master():
global app
session = Session()
master = get_master(session)
if master is not None:
id_ = uuid.UUID(master.id).urn
else:
id_ = get_session_id(session)
response = make_response(id_)
response.headers['Content-Type'] = 'text/plain'
return response
@app.route("/master/get")
def get_master_url():
global app
session = Session()
master_id = session.query(Config).filter(Config.id == 'master').first()
if master_id is None:
abort(httplib.NOT_FOUND)
master = session.query(Peer).filter(Peer.id == master_id.value).first()
if master is None:
return '', httplib.NO_CONTENT
else:
response = make_response(master.url)
response.headers['Content-Type'] = 'text/plain'
return response
@app.route("/master/suggest", methods=['POST'])
def sugget_master():
global app
session = Session()
try:
suggested_master = uuid.UUID(request.form['master'])
except ValueError:
abort(httplib.BAD_REQUEST)
master = get_master(session)
if master is None:
master = uuid.UUID(get_session_id(session))
else:
master = uuid.UUID(master.id)
if master != suggested_master:
abort(httplib.CONFLICT)
else:
master_query = session.query(Config).filter(Config.id == 'master')
if master_query.count() > 1:
master_query.delete()
session.add(Config(id='master', value=master.urn))
session.commit()
return '', httplib.NO_CONTENT
@app.route("/master")
def selected_master():
global app
session = Session()
master = session.query(Config).filter(Config.id == 'master').first()
if master is None:
return '', httplib.NO_CONTENT
response = make_response(master)
response.headers['Content-Type'] = 'plain/text'
return response
@app.route("/log/<title>", methods=['GET'])
def get_log_entries(title):
global app
session = Session()
component = session.query(Component).filter(Component.title == title)\
.first()
if component is None:
abort(httplib.NOT_FOUND)
min_date = request.args.get('min-date')
max_date = request.args.get('max-date')
try:
if min_date is not None:
min_date = datetime.fromtimestamp(float(min_date))
if max_date is not None:
max_date = datetime.fromtimestamp(float(max_date))
if min_date > max_date:
raise ValueError
number = int(request.args.get('n', N_FEED_ENTRY_DEFAULT))
except ValueError:
abort(httplib.BAD_REQUEST)
if number > N_FEED_ENTRY_MAX:
abort(httplib.REQUEST_ENTITY_TOO_LARGE)
pattern = request.args.get('pattern', None)
entries = session.query(Entry).filter(Entry.component_id == component.id)
if min_date is not None:
entries = entries.filter(Entry.datetime > min_date)
if max_date is not None:
entries = entries.filter(Entry.datetime < max_date)
if pattern is not None:
entries = entries.filter(Entry.content.like(pattern))
entries.order_by(desc(Entry.datetime))
entries = entries.limit(number)
feed_entries = []
feed_updated = datetime.fromtimestamp(0)
for entry in entries:
kwargs = {}
if entry.content is not None:
kwargs['content'] = atomize.Content(entry.content)
feed_entries.append(atomize.Entry(
title=entry.title,
guid=urlparse.urljoin(request.url, '/%d/%d' % (entry.component.id, entry.id)),
updated=entry.datetime,
author=entry.component.title,
**kwargs
))
feed_updated = max(feed_updated, entry.datetime)
feed = atomize.Feed(
title=component.title,
updated=feed_updated,
guid=request.url,
self_link=request.url,
entries=feed_entries,
author=component.title,
)
return feed.feed_string()
@app.route('/id')
def get_id():
session = Session()
app_id = get_session_id(session)
response = make_response(app_id)
response.headers['Content-Type'] = 'text/plain'
return response
def run():
global app
parser = argparse.ArgumentParser(description="Wordpress Log Server")
parser.add_argument('-d', '--debug', action='store_const',
const=True, default=False,
help="enable debug mode for development.")
parser.add_argument('--host', metavar='HOSTNAME', default='0.0.0.0',
required=False, help="specify hostname to bind on.",
type=str)
parser.add_argument('--port', metavar='PORT', type=int, default=8080,
help="specify port to bind on.")
args = parser.parse_args()
app.run(host=args.host, port=args.port, debug=args.debug)
if __name__ == '__main__':
run()
slapos/wordpress/ia/http/__init__.py 0 → 100644
View file @ 577b9075
This diff is collapsed.
slapos/wordpress/ia/data.py → slapos/wordpress/ia/http/data.py
View file @ 577b9075
...@@ -41,7 +41,7 @@ class Component(Base): ...@@ -41,7 +41,7 @@ class Component(Base):
__tablename__ = 'components' __tablename__ = 'components'
id = Column(Integer, primary_key=True) id = Column(Integer, primary_key=True)
title = Column(String, nullable=False) title = Column(String, unique=True, nullable=False)
entries = relationship('Entry', backref='component') entries = relationship('Entry', backref='component')
class Entry(Base): class Entry(Base):
......
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