class CassandraServer(BaseServer, JobGetterMixin):
regenerating = False
redis_client = None
def __init__(self, config):
super(CassandraServer, self).__init__(config)
self.cassandra_cf_content = config["cassandra_cf_content"]
self.cassandra_cf_temp_content = config["cassandra_cf_temp_content"]
# Cassandra Clients & Factorys
self.cassandra_client = CassandraClusterPool(
config["cassandra_servers"],
keyspace=config["cassandra_keyspace"],
pool_size=len(config["cassandra_servers"]) * 2)
self.cassandra_client.startService()
# Negative Cache
self.disable_negative_cache = config.get("disable_negative_cache", False)
# Redis
self.redis_hosts = config["redis_hosts"]
# deltas
self.delta_enabled = config.get('delta_enabled', False)
self.delta_debug = config.get('delta_debug', False)
self.delta_sample_rate = config.get('delta_sample_rate', 1.0)
# create the log path if required & enabled
self.cassandra_cf_delta = config.get('cassandra_cf_delta', None)
self.cassandra_cf_delta_user = config.get('cassandra_cf_delta_user', None)
# sanity check config; if cfs aren't set, turn deltas off
if not all([self.cassandra_cf_delta, self.cassandra_cf_delta_user]):
logger.warn('Disabling cassandra deltas; both cf_delta and'
' cf_delta_user must be set in the config.')
self.delta_enabled = False
self.setupJobGetter(config)
def start(self):
start_deferred = super(CassandraServer, self).start()
start_deferred.addCallback(self._cassandraStart)
return start_deferred
@inlineCallbacks
def _cassandraStart(self, started=False):
logger.debug("Starting Cassandra components.")
try:
self.redis_client = yield RedisShardingConnection(self.redis_hosts)
except Exception, e:
logger.error("Could not connect to Redis: %s" % e)
self.shutdown()
raise Exception("Could not connect to Redis.")
if self.disable_negative_cache:
logger.warning("Disabling negative cache.")
logger.debug("Started RedisShardingConnection")
self.pg = PageGetter(
self.cassandra_client,
redis_client=self.redis_client,
disable_negative_cache=self.disable_negative_cache,
rq=self.rq)
logger.debug("Initialized pagegetter.")
returnValue(True)
def __init__(self, config, port=None):
super(IdentityServer, self).__init__(config)
self.plugin_mapping = config["plugin_mapping"]
self.setupMySQL(config)
self.setupIdentityQueue(config)
self.cassandra_cf_identity = config["cassandra_cf_identity"]
self.cassandra_cf_connections = config["cassandra_cf_connections"]
self.cassandra_cf_recommendations = config["cassandra_cf_recommendations"]
self.cassandra_cf_reverse_recommendations = config["cassandra_cf_reverse_recommendations"]
self.cassandra_client = CassandraClusterPool(
config["cassandra_servers"],
keyspace=config["cassandra_keyspace"],
pool_size=len(config["cassandra_servers"]) * 2)
self.cassandra_client.startService()
resource = Resource()
self.function_resource = Resource()
resource.putChild("function", self.function_resource)
if port is None:
port = config["identity_server_port"]
self.site_port = reactor.listenTCP(port, server.Site(resource))
self.expose(self.updateConnections)
self.expose(self.updateAllConnections)
self.expose(self.updateAllIdentities)
self.expose(self.getRecommendations)
self.expose(self.getReverseRecommendations)
self.expose(self.updateIdentity)
# setup manhole
manhole_namespace = {
'service': self,
'globals': globals(),
}
reactor.listenTCP(config["manhole_identity_port"], self.getManholeFactory(manhole_namespace, admin=config["manhole_password"]))
def __init__(self, config):
super(CassandraServer, self).__init__(config)
self.cassandra_cf_content = config["cassandra_cf_content"]
self.cassandra_cf_temp_content = config["cassandra_cf_temp_content"]
# Cassandra Clients & Factorys
self.cassandra_client = CassandraClusterPool(
config["cassandra_servers"],
keyspace=config["cassandra_keyspace"],
pool_size=len(config["cassandra_servers"]) * 2)
self.cassandra_client.startService()
# Negative Cache
self.disable_negative_cache = config.get("disable_negative_cache", False)
# Redis
self.redis_hosts = config["redis_hosts"]
# deltas
self.delta_enabled = config.get('delta_enabled', False)
self.delta_debug = config.get('delta_debug', False)
self.delta_sample_rate = config.get('delta_sample_rate', 1.0)
# create the log path if required & enabled
self.cassandra_cf_delta = config.get('cassandra_cf_delta', None)
self.cassandra_cf_delta_user = config.get('cassandra_cf_delta_user', None)
# sanity check config; if cfs aren't set, turn deltas off
if not all([self.cassandra_cf_delta, self.cassandra_cf_delta_user]):
logger.warn('Disabling cassandra deltas; both cf_delta and'
' cf_delta_user must be set in the config.')
self.delta_enabled = False
self.setupJobGetter(config)
def initialize(self):
LOGGER.info('Initializing %s' % self.__class__.__name__)
self.client = CassandraClusterPool(
self.servers,
keyspace=self.keyspace,
pool_size=self.pool_size)
self.client.startService()
LOGGER.info('%s initialized, connected to: %s.' % (self.__class__.__name__, self.servers))
def cluster_and_pool(self, num_nodes=10, pool_size=5, start=True,
cluster_class=None):
if cluster_class is None:
cluster_class = FakeCassandraCluster
cluster = cluster_class(num_nodes, start_port=self.start_port)
pool = CassandraClusterPool([cluster.iface], thrift_port=self.start_port,
pool_size=pool_size)
if start:
cluster.startService()
pool.startService()
self.cluster = cluster
self.pool = pool
try:
yield cluster, pool
finally:
del self.pool
del self.cluster
if pool.running:
pool.stopService()
if cluster.running:
cluster.stopService()
def cluster_and_pool(self,
num_nodes=10,
pool_size=5,
start=True,
cluster_class=None,
api_version=None):
if cluster_class is None:
cluster_class = FakeCassandraCluster
cluster = cluster_class(num_nodes, start_port=self.start_port)
pool = CassandraClusterPool([cluster.iface],
thrift_port=self.start_port,
pool_size=pool_size,
api_version=api_version)
if start:
cluster.startService()
pool.startService()
self.cluster = cluster
self.pool = pool
try:
yield cluster, pool
finally:
del self.pool
del self.cluster
if pool.running:
pool.stopService()
if cluster.running:
cluster.stopService()
def cluster_and_pool(self,
num_nodes=10,
pool_size=5,
start=True,
cluster_class=None,
node_discovery=True,
fill_throttle=0.0):
if cluster_class is None:
cluster_class = FakeCassandraCluster
cluster = cluster_class(num_nodes, start_port=self.start_port)
pool = CassandraClusterPool([cluster.iface],
thrift_port=self.start_port,
pool_size=pool_size,
auto_node_discovery=node_discovery,
fill_pool_throttle=fill_throttle)
if start:
cluster.startService()
pool.startService()
self.cluster = cluster
self.pool = pool
try:
yield cluster, pool
finally:
del self.pool
del self.cluster
if pool.running:
pool.stopService()
if cluster.running:
cluster.stopService()
class IdentityServer(BaseServer, MySQLMixin, IdentityQueueMixin):
name = "HiiSpider Identity Server UUID: %s" % str(uuid4())
simultaneous_jobs = 50
active_jobs = 0
updating_connections = {}
updating_identities = {}
connections_queue = []
connectionsloop = None
dequeueloop = None
queue_requests = 0
def __init__(self, config, port=None):
super(IdentityServer, self).__init__(config)
self.plugin_mapping = config["plugin_mapping"]
self.setupMySQL(config)
self.setupIdentityQueue(config)
self.cassandra_cf_identity = config["cassandra_cf_identity"]
self.cassandra_cf_connections = config["cassandra_cf_connections"]
self.cassandra_cf_recommendations = config["cassandra_cf_recommendations"]
self.cassandra_cf_reverse_recommendations = config["cassandra_cf_reverse_recommendations"]
self.cassandra_client = CassandraClusterPool(
config["cassandra_servers"],
keyspace=config["cassandra_keyspace"],
pool_size=len(config["cassandra_servers"]) * 2)
self.cassandra_client.startService()
resource = Resource()
self.function_resource = Resource()
resource.putChild("function", self.function_resource)
if port is None:
port = config["identity_server_port"]
self.site_port = reactor.listenTCP(port, server.Site(resource))
self.expose(self.updateConnections)
self.expose(self.updateAllConnections)
self.expose(self.updateAllIdentities)
self.expose(self.getRecommendations)
self.expose(self.getReverseRecommendations)
self.expose(self.updateIdentity)
# setup manhole
manhole_namespace = {
'service': self,
'globals': globals(),
}
reactor.listenTCP(config["manhole_identity_port"], self.getManholeFactory(manhole_namespace, admin=config["manhole_password"]))
def start(self):
start_deferred = super(IdentityServer, self).start()
start_deferred.addCallback(self._identityStart)
return start_deferred
@inlineCallbacks
def _identityStart(self, started=False):
yield self.startIdentityQueue()
self.connectionsloop = task.LoopingCall(self.findConnections)
self.connectionsloop.start(0.2)
self.dequeueloop = task.LoopingCall(self.dequeue)
self.dequeueloop.start(1)
@inlineCallbacks
def shutdown(self):
self.connectionsloop.stop()
self.dequeueloop.stop()
logger.debug("%s stopping on main HTTP interface." % self.name)
yield self.site_port.stopListening()
yield self.stopIdentityQueue()
yield super(IdentityServer, self).shutdown()
def updateUser(self, user_id):
reactor.callLater(0, self._updateUser, user_id)
return {"success": True, "message": "User update started."}
@inlineCallbacks
def _updateUser(self, user_id):
sql = """SELECT type FROM content_account WHERE user_id=%s"""
data = yield self.mysql.runQuery(sql, int(user_id))
deferreds = [self._updateIdentity(str(user_id), x["type"]) for x in data if "custom_" not in x["type"]]
results = yield DeferredList(deferreds, consumeErrors=True)
for result in results:
if not result[0]:
raise result[1]
deferreds = [self._updateConnections(str(user_id), x["type"]) for x in data if "custom_" not in x["type"]]
results = yield DeferredList(deferreds, consumeErrors=True)
for result in results:
if not result[0]:
raise result[1]
def updateAllIdentities(self, service_name):
if self.updating_identities.get(service_name, False):
return {"success": False, "message": "Already updating %s" % service_name}
else:
reactor.callLater(0, self._updateAllIdentities, service_name)
return {"success": True, "message": "Update all identities started."}
@inlineCallbacks
def _updateAllIdentities(self, service_name):
self.updating_identities[service_name] = True
sql = """SELECT user_id
FROM content_%(service_name)saccount
INNER JOIN content_account
ON content_%(service_name)saccount.account_id = content_account.id
LIMIT %%s, %%s
""" % {"service_name": service_name}
start = 0
step = 100
data = yield self.mysql.runQuery(sql, (start, step))
while data:
d = [self._updateIdentity(str(x["user_id"]), service_name) for x in data]
results = yield DeferredList(d, consumeErrors=True)
for result in results:
if not result[0]:
raise result[1]
start += step
data = yield self.mysql.runQuery(sql, (start, step))
self.updating_connections[service_name] = False
def updateAllConnections(self, service_name):
if self.updating_connections.get(service_name, False):
return {"success": False, "message": "Already updating %s" % service_name}
else:
reactor.callLater(0, self._updateAllConnections, service_name)
return {"success": True, "message": "Update all connections started."}
@inlineCallbacks
def _updateAllConnections(self, service_name):
self.updating_connections[service_name] = True
sql = """SELECT user_id
FROM content_%(service_name)saccount
INNER JOIN content_account
ON content_%(service_name)saccount.account_id = content_account.id
LIMIT %%s, %%s
""" % {"service_name": service_name}
start = 0
step = 40
data = yield self.mysql.runQuery(sql, (start, step))
while data:
d = [self._updateConnections(str(x["user_id"]), service_name) for x in data]
results = yield DeferredList(d, consumeErrors=True)
for result in results:
if not result[0]:
raise result[1]
start += step
data = yield self.mysql.runQuery(sql, (start, step))
self.updating_connections[service_name] = False
returnValue({"success": True})
@inlineCallbacks
def _accountData(self, user_id, service_name):
sql = """SELECT content_%(service_name)saccount.*
FROM content_%(service_name)saccount
INNER JOIN content_account
ON content_%(service_name)saccount.account_id = content_account.id
WHERE content_account.user_id = %%s""" % {"service_name": service_name}
try:
data = yield self.mysql.runQuery(sql, user_id)
except Exception:
message = "Could not find service %s:%s, %s" % (
service_name,
user_id,
sql)
logger.error(message)
raise
if len(data) == 0: # No results?
message = "Could not find service %s:%s" % (service_name, user_id)
logger.error(message)
raise Exception(message)
if service_name in self.inverted_args_mapping:
mapping = self.inverted_args_mapping[service_name]
for kwargs in data:
for key, value in mapping.iteritems():
if value in kwargs:
kwargs[key] = kwargs.pop(value)
returnValue(data)
def updateIdentity(self, user_id, service_name):
reactor.callLater(0, self._updateIdentity, user_id, service_name)
return {"success": True, "message": "Update identity started."}
@inlineCallbacks
def _updateIdentity(self, user_id, service_name):
data = yield self._accountData(user_id, service_name)
for kwargs in data:
function_key = "%s/_getidentity" % self.plugin_mapping.get(service_name, service_name)
try:
service_id = yield self.executeFunction(function_key, **kwargs)
except NotImplementedError:
logger.info("%s not implemented." % function_key)
return
yield self.cassandra_client.insert(
"%s|%s" % (service_name, service_id),
self.cassandra_cf_identity,
user_id,
column="user_id")
def updateConnections(self, user_id, service_name):
reactor.callLater(0, self._updateConnections, user_id, service_name)
return {"success": True, "message": "Update identity started."}
@inlineCallbacks
def _updateConnections(self, user_id, service_name):
logger.debug("Updating %s for user %s." % (service_name, user_id))
data = yield self._accountData(user_id, service_name)
ids = []
for kwargs in data:
function_key = "%s/_getconnections" % self.plugin_mapping.get(service_name, service_name)
try:
account_ids = yield self.executeFunction(function_key, **kwargs)
except NotImplementedError:
logger.info("%s not implemented." % function_key)
return
except Exception, e:
logger.error(e.message)
return
ids.extend(account_ids)
data = yield self.cassandra_client.get_slice(
key=user_id,
column_family=self.cassandra_cf_connections,
start=service_name,
finish=service_name + chr(0xff))
ids = set(ids)
old_ids = dict([(x.column.name.split("|").pop(), x.column.value) for x in data])
new_ids = ids - set(old_ids)
obsolete_ids = set(old_ids) - ids
for service_id in obsolete_ids:
try:
logger.debug("Removing %s|%s from connections CF." % (service_name, service_id))
yield self.cassandra_client.remove(
key=user_id,
column_family=self.cassandra_cf_connections,
column="%s|%s" % (service_name, service_id))
logger.debug("Decrementing %s:%s." % (user_id, old_ids[service_id]))
yield DeferredList([
self.client.add(
key=user_id,
column_family=self.cassandra_cf_recommendations,
value=-1,
column=old_ids[service_id]),
self.client.add(
key=old_ids[service_id],
column_family=self.cassandra_cf_reverse_recommendations,
value=-1,
column=user_id)])
except Exception, e:
logger.error(e.message)
class Cassandra(Component):
"""
Implements basic Cassandra operations as well as more complex job-based
methods.
"""
client = None
def __init__(self, server, config, server_mode, **kwargs):
super(Cassandra, self).__init__(server, server_mode)
config = copy(config)
config.update(kwargs)
self.servers = config["cassandra_servers"]
self.keyspace = config["cassandra_keyspace"]
self.pool_size = len(config["cassandra_servers"]) * 2
self.cf_content = config["cassandra_cf_content"]
self.cf_delta = config["cassandra_cf_delta"]
self.cf_delta_user = config["cassandra_cf_delta_user"]
self.cf_identity = config["cassandra_cf_identity"]
self.cf_connections = config["cassandra_cf_connections"]
self.cf_recommendations = config["cassandra_cf_recommendations"]
self.cf_reverse_recommendations = config["cassandra_cf_reverse_recommendations"]
def initialize(self):
LOGGER.info('Initializing %s' % self.__class__.__name__)
self.client = CassandraClusterPool(
self.servers,
keyspace=self.keyspace,
pool_size=self.pool_size)
self.client.startService()
LOGGER.info('%s initialized, connected to: %s.' % (self.__class__.__name__, self.servers))
def shutdown(self):
LOGGER.info("Stopping %s" % self.__class__.__name__)
self.client.stopService()
LOGGER.info("%s stopped." % self.__class__.__name__)
@shared
def batch_insert(self, *args, **kwargs):
return self.client.batch_insert(*args, **kwargs)
@shared
def insert(self, *args, **kwargs):
return self.client.insert(*args, **kwargs)
@shared
def remove(self, *args, **kwargs):
return self.client.remove(*args, **kwargs)
@shared
def get(self, *args, **kwargs):
return self.client.get(*args, **kwargs)
@shared
def get_key_range(self, *args, **kwargs):
return self.client.get_key_range(*args, **kwargs)
@shared
def get_slice(self, *args, **kwargs):
return self.client.get_slice(*args, **kwargs)
@shared
def get_range_slices(self, *args, **kwargs):
return self.client.get_range_slices(*args, **kwargs)
@shared
@inlineCallbacks
def get_delta(self, delta_id):
"""Get data from cassandra by user delta_id."""
try:
columns = yield self.client.get_slice(
key=binascii.unhexlify(delta_id),
column_family=self.cf_delta,
consistency=2)
except NotFoundException:
LOGGER.error("%s not found." % delta_id)
return
results = dict([(x.column.name, x.column.value) for x in columns])
results["data"] = decompress(results["data"])
if "old_data" in results:
results["old_data"] = decompress(results["old_data"])
if "new_data" in results:
results["new_data"] = decompress(results["new_data"])
returnValue(results)
@shared
@inlineCallbacks
def getDataByIDAndUUID(self, user_id, uuid):
"""Get data from cassandra by user id and uuid."""
try:
data = yield self.client.get(
key=str(user_id),
column_family=self.cf_content,
column=uuid,
consistency=2)
except NotFoundException:
return
obj = yield threads.deferToThread(decompress, data.column.value)
returnValue(obj)
@shared
@inlineCallbacks
def getData(self, job, consistency=2):
try:
data = yield self.client.get(
key=str(job.user_account["user_id"]),
column_family=self.cf_content,
column=job.uuid,
consistency=consistency)
except NotFoundException:
return
obj = yield threads.deferToThread(decompress, data.column.value)
returnValue(obj)
@shared
@inlineCallbacks
def setData(self, user_id, data, uuid):
s = yield threads.deferToThread(compress, data)
result = yield self.client.insert(
str(user_id),
self.cf_content,
s,
column=uuid,
consistency=2)
returnValue(result)
@shared
@inlineCallbacks
def setServiceIdentity(self, service, user_id, service_id):
LOGGER.debug("Inserting identity: %s | %s" % (service, service_id))
try:
yield self.client.insert(
"%s|%s" % (service, service_id),
self.cf_identity,
user_id,
column="user_id",
consistency=2)
except:
LOGGER.error(format_exc())
returnValue(None)
@shared
@inlineCallbacks
def getServiceConnections(self, service, user_id):
try:
data = yield self.client.get_slice(
key=user_id,
column_family=self.cf_connections,
start=service,
finish=service + chr(0xff),
consistency=2)
except:
LOGGER.error(format_exc())
returnValue([])
returnValue(dict([(x.column.name.split("|").pop(), x.column.value)
for x in data]))
@inlineCallbacks
def addConnections(self, service, user_id, new_ids):
mapped_new_ids = {}
for chunk in list(chunks(list(new_ids), 100)):
data = yield self.client.multiget(
keys=["%s|%s" % (service, x) for x in chunk],
column_family=self.cf_identity,
column="user_id",
consistency=2)
for key in data:
if data[key]:
mapped_new_ids[key] = data[key][0].column.value
if not mapped_new_ids:
# We don't have any of the new connections in the system.
return
LOGGER.debug("Batch inserting: %s" % pformat(mapped_new_ids))
yield self.client.batch_insert(
key=user_id,
column_family=self.cf_connections,
mapping=mapped_new_ids,
consistency=2)
followee_ids = mapped_new_ids.values()
for chunk in list(chunks(followee_ids, 10)):
deferreds = []
for followee_id in chunk:
LOGGER.info("Incrementing %s:%s" % (user_id, followee_id))
deferreds.append(self.client.add(
key=user_id,
column_family=self.cf_recommendations,
value=1,
column=followee_id))
deferreds.append(self.client.add(
key=followee_id,
column_family=self.cf_reverse_recommendations,
value=1,
column=user_id),
consistency=2)
yield DeferredList(deferreds)
@inlineCallbacks
def removeConnections(self, service, user_id, obsolete_mapping):
for service_id in obsolete_mapping:
LOGGER.debug("Removing %s|%s from connections CF." % (service, service_id))
yield self.client.remove(
key=user_id,
column_family=self.cf_connections,
column="%s|%s" % (service_name, service_id),
consistency=2)
logger.debug("Decrementing %s:%s." % (user_id, old_ids[service_id]))
yield DeferredList([
self.client.add(
key=user_id,
column_family=self.cf_recommendations,
value=-1,
column=obsolete[service_id],
consistency=2),
self.client.add(
key=obsolete[service_id],
column_family=self.cf_reverse_recommendations,
value=-1,
column=user_id,
consistency=2)])
config = ConfigParser.ConfigParser()
with open("etc/defaults.cfg") as defaults:
config.readfp(defaults)
config.read(["etc/devel.cfg", "etc/production.cfg"])
cdnHost = config.get("General", "CDNHost")
secureProxy = config.get("General", "SecureProxy")
rootUrl = config.get("General", "URL")
brandName = config.get("Branding", "Name")
#
# Cassandra connection pool
#
cassandraNodes = config.get("Cassandra", "Nodes").split(",")
cassandraKeyspace = config.get("Cassandra", "Keyspace")
db = CassandraClusterPool(cassandraNodes, cassandraKeyspace, pool_size=10)
db.set_consistency(ConsistencyLevel.LOCAL_QUORUM)
#
# Internationalization
# Aliases for i18n
#
_ = gettext.gettext
__ = gettext.ngettext
#
# Map of all item type plugins
#
plugins = {}
def __init__(self, cfg):
self.cfg = cfg
servers = map(parse_srvaddr, self.cfg.get("cassandra", "seed").split(","))
keyspace = self.cfg.get("cassandra", "keyspace")
self.request_retries = self.cfg.getint("cassandra", "retries")
CassandraClusterPool.__init__(self, seed_list=servers, keyspace=keyspace, conn_timeout=self.cfg.getint("cassandra", "timeout"))
