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#!/usr/bin/env python
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
#
import qmf.console, optparse, sys
from qpid.management import managementChannel, managementClient
from qpid.messaging import Connection
from qpid.messaging import Message as QpidMessage
try:
from uuid import uuid4
except ImportError:
from qpid.datatypes import uuid4
# Utility for doing fast qmf2 operations on a broker.
class QmfBroker(object):
def __init__(self, conn):
self.conn = conn
self.sess = self.conn.session()
self.reply_to = "qmf.default.topic/direct.%s;{node:{type:topic}, link:{x-declare:{auto-delete:True,exclusive:True}}}" % \
str(uuid4())
self.reply_rx = self.sess.receiver(self.reply_to)
self.reply_rx.capacity = 10
self.tx = self.sess.sender("qmf.default.direct/broker")
self.next_correlator = 1
def close(self):
self.conn.close()
def __repr__(self):
return "Qpid Broker: %s" % self.url
def _method(self, method, arguments, addr="org.apache.qpid.broker:broker:amqp-broker"):
props = {'method' : 'request',
'qmf.opcode' : '_method_request',
'x-amqp-0-10.app-id' : 'qmf2'}
correlator = str(self.next_correlator)
self.next_correlator += 1
content = {'_object_id' : {'_object_name' : addr},
'_method_name' : method,
'_arguments' : arguments}
message = QpidMessage(content, reply_to=self.reply_to, correlation_id=correlator,
properties=props, subject="broker")
self.tx.send(message)
response = self.reply_rx.fetch(10)
if response.properties['qmf.opcode'] == '_exception':
raise Exception("Exception from Agent: %r" % response.content['_values'])
if response.properties['qmf.opcode'] != '_method_response':
raise Exception("bad response: %r" % response.properties)
return response.content['_arguments']
def _sendRequest(self, opcode, content):
props = {'method' : 'request',
'qmf.opcode' : opcode,
'x-amqp-0-10.app-id' : 'qmf2'}
correlator = str(self.next_correlator)
self.next_correlator += 1
message = QpidMessage(content, reply_to=self.reply_to, correlation_id=correlator,
properties=props, subject="broker")
self.tx.send(message)
return correlator
def _doClassQuery(self, class_name):
query = {'_what' : 'OBJECT',
'_schema_id' : {'_class_name' : class_name}}
correlator = self._sendRequest('_query_request', query)
response = self.reply_rx.fetch(10)
if response.properties['qmf.opcode'] != '_query_response':
raise Exception("bad response")
items = []
done = False
while not done:
for item in response.content:
items.append(item['_values'])
if 'partial' in response.properties:
response = self.reply_rx.fetch(10)
else:
done = True
return items
def _doNameQuery(self, class_name, object_name, package_name='org.apache.qpid.broker'):
query = {'_what' : 'OBJECT',
'_object_id' : {'_object_name' : "%s:%s:%s" % (package_name, class_name, object_name)}}
correlator = self._sendRequest('_query_request', query)
response = self.reply_rx.fetch(10)
if response.properties['qmf.opcode'] != '_query_response':
raise Exception("bad response")
items = []
done = False
while not done:
for item in response.content:
items.append(item['_values'])
if 'partial' in response.properties:
response = self.reply_rx.fetch(10)
else:
done = True
if len(items) == 1:
return items[0]
return None
def _getAllBrokerObjects(self, cls):
items = self._doClassQuery(cls.__name__.lower())
objs = []
for item in items:
objs.append(cls(self, item))
return objs
def _getBrokerObject(self, cls, name):
obj = self._doNameQuery(cls.__name__.lower(), name)
if obj:
return cls(self, obj)
return None
op=optparse.OptionParser(usage="Usage: %prog [options] [broker-address]")
op.add_option("-p", "--promote", action="store_true",
help="Promote a backup broker to become the primary.")
op.add_option("-c", "--client-addresses", action="store", type="string",
help="Set list of addresses used by clients to connect to the HA cluster.")
op.add_option("-b", "--broker-addresses", action="store", type="string",
help="Set list of addresses used by HA brokers to connect to each other.")
op.add_option("-q", "--query", action="store_true",
help="Show the current HA settings on the broker.")
def get_ha_broker(qmf_broker):
ha_brokers = qmf_broker._doClassQuery("habroker")
if (not ha_brokers): raise Exception("Broker does not have HA enabled.")
return ha_brokers[0]
def main(argv):
try:
opts, args = op.parse_args(argv)
if len(args) >1: broker = args[1]
else: broker = "localhost:5672"
conn = Connection.establish(broker, client_properties={"qpid.ha-admin":1})
ha_broker = "org.apache.qpid.ha:habroker:ha-broker"
try:
qmf_broker = QmfBroker(conn)
get_ha_broker(qmf_broker) # Verify that HA is enabled
action=False
if opts.promote:
qmf_broker._method("promote", {}, ha_broker)
action=True
if opts.broker_addresses:
qmf_broker._method('setBrokerAddresses', {'brokerAddresses':opts.broker_addresses}, ha_broker)
action=True
if opts.client_addresses:
qmf_broker._method('setClientAddresses', {'clientAddresses':opts.client_addresses}, ha_broker)
action=True
if opts.query or not action:
hb = get_ha_broker(qmf_broker)
print "status=%s"%hb["status"]
print "broker-addresses=%s"%hb["brokerAddresses"]
print "client-addresses=%s"%hb["clientAddresses"]
return 0
finally:
conn.close() # Avoid errors shutting down threads.
except Exception, e:
raise # FIXME aconway 2012-01-31:
print e
return 1
if __name__ == "__main__":
sys.exit(main(sys.argv))
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