[851] | 1 | #!/usr/bin/env python |
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| 2 | |
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| 3 | import optparse, sys, uuid |
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| 4 | |
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| 5 | from twisted.internet import reactor |
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| 6 | from twisted.internet.defer import inlineCallbacks, returnValue |
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| 7 | from twisted.internet.protocol import ClientCreator |
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| 8 | from txamqp.client import TwistedDelegate |
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| 9 | from txamqp.content import Content |
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| 10 | from txamqp.protocol import AMQClient |
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| 11 | import txamqp.spec |
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| 12 | |
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| 13 | NUM_MSGS = 1 |
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| 14 | DEFAULT_TOPICS='info' |
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| 15 | QUEUE_NAME = 'txamqp_example_queue' |
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| 16 | ROUTING_TOPIC = 'txamqp_example_topic' |
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| 17 | EXCHANGE_NAME = 'txamqp_example_exchange' |
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| 18 | SEVERITIES = ('info', 'warning', 'debug') |
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| 19 | FACILITIES = ('kern', 'mail') |
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| 20 | |
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| 21 | @inlineCallbacks |
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| 22 | def gotConnection(connection, username, password): |
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| 23 | print ' Got connection, authenticating.' |
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| 24 | # Older version of AMQClient have no authenticate |
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| 25 | # yield connection.authenticate(username, password) |
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| 26 | # This produces the same effect |
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| 27 | yield connection.start({'LOGIN': username, 'PASSWORD': password}) |
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| 28 | channel = yield connection.channel(1) |
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| 29 | yield channel.channel_open() |
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| 30 | returnValue((connection, channel)) |
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| 31 | |
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| 32 | def setup_queue_cleanup(result): |
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| 33 | """Executed in consumers on Ctrl-C, but not in publishers.""" |
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| 34 | connection, channel = result |
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| 35 | reactor.addSystemEventTrigger('before', 'shutdown', |
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| 36 | consumer_cleanup, channel) |
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| 37 | return result |
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| 38 | |
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| 39 | def consumer_cleanup(channel): |
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| 40 | return channel.queue_delete(QUEUE_NAME) |
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| 41 | |
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| 42 | @inlineCallbacks |
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| 43 | def publisher_cleanup(result): |
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| 44 | # import pdb; pdb.set_trace() |
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| 45 | connection, channel = result |
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| 46 | # yield channel.queue_delete(queue=QUEUE_NAME) |
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| 47 | yield channel.channel_close() |
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| 48 | chan0 = yield connection.channel(0) |
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| 49 | yield chan0.connection_close() |
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| 50 | reactor.stop() |
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| 51 | |
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| 52 | @inlineCallbacks |
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| 53 | def consume1(result, topics): |
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| 54 | connection, channel = result |
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| 55 | yield channel.queue_declare(queue=QUEUE_NAME) |
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| 56 | msgnum = 0 |
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| 57 | print ' [*] Waiting for messages. To exit press CTRL+C' |
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| 58 | yield channel.basic_consume(queue=QUEUE_NAME, no_ack=True, consumer_tag='qtag') |
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| 59 | queue = yield connection.queue('qtag') |
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| 60 | while True: |
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| 61 | msg = yield queue.get() |
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| 62 | msgnum += 1 |
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| 63 | print " [%04d] Received %r from channel #%d" % (msgnum, msg.content.body, channel.id) |
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| 64 | returnValue(result) |
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| 65 | |
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| 66 | @inlineCallbacks |
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| 67 | def consume2(result, topics): |
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| 68 | connection, channel = result |
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| 69 | yield channel.queue_declare(queue=QUEUE_NAME, durable=True) |
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| 70 | msgnum = 0 |
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| 71 | print ' [*] Waiting for messages. To exit press CTRL+C' |
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| 72 | yield channel.basic_qos(prefetch_count=1) |
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| 73 | yield channel.basic_consume(queue=QUEUE_NAME, consumer_tag='qtag') |
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| 74 | queue = yield connection.queue('qtag') |
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| 75 | while True: |
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| 76 | msg = yield queue.get() |
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| 77 | msgnum += 1 |
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| 78 | print " [%04d] Received %r from channel #%d" % ( |
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| 79 | msgnum, msg.content.body, channel.id) |
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| 80 | channel.basic_ack(delivery_tag=msg.delivery_tag) |
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| 81 | returnValue(result) |
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| 82 | |
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| 83 | @inlineCallbacks |
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| 84 | def consume3(result, topics): |
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| 85 | connection, channel = result |
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| 86 | yield channel.exchange_declare(exchange=EXCHANGE_NAME, type='fanout') |
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| 87 | reply = yield channel.queue_declare(exclusive=True) |
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| 88 | queue_name = reply.queue |
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| 89 | msgnum = 0 |
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| 90 | channel.queue_bind(exchange=EXCHANGE_NAME, queue=queue_name) |
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| 91 | print ' [*] Waiting for messages. To exit press CTRL+C' |
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| 92 | yield channel.basic_consume( |
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| 93 | queue=queue_name, no_ack=True, consumer_tag='qtag') |
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| 94 | queue = yield connection.queue('qtag') |
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| 95 | while True: |
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| 96 | msg = yield queue.get() |
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| 97 | msgnum += 1 |
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| 98 | print " [%04d] Received %r from channel #%d" % ( |
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| 99 | msgnum, msg.content.body, channel.id) |
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| 100 | returnValue(result) |
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| 101 | |
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| 102 | @inlineCallbacks |
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| 103 | def consume4(result, topics): |
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| 104 | connection, channel = result |
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| 105 | exchange_name = '%s_4' % EXCHANGE_NAME |
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| 106 | yield channel.exchange_declare(exchange=exchange_name, type='direct') |
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| 107 | reply = yield channel.queue_declare(exclusive=True) |
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| 108 | queue_name = reply.queue |
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| 109 | msgnum = 0 |
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| 110 | severities = topics.split(',') |
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| 111 | for severity in severities: |
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| 112 | channel.queue_bind( |
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| 113 | exchange=exchange_name, queue=queue_name, routing_key=severity) |
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| 114 | print ' [*] Waiting for messages. To exit press CTRL+C' |
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| 115 | yield channel.basic_consume( |
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| 116 | queue=queue_name, no_ack=True, consumer_tag='qtag') |
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| 117 | queue = yield connection.queue('qtag') |
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| 118 | while True: |
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| 119 | msg = yield queue.get() |
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| 120 | msgnum += 1 |
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| 121 | print " [%04d] Received %r from channel #%d with severity [%s]" % ( |
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| 122 | msgnum, msg.content.body, channel.id, msg.routing_key) |
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| 123 | returnValue(result) |
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| 124 | |
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| 125 | @inlineCallbacks |
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| 126 | def consume5(result, topics): |
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| 127 | connection, channel = result |
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| 128 | exchange_name = '%s_5' % EXCHANGE_NAME |
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| 129 | yield channel.exchange_declare(exchange=exchange_name, type='topic') |
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| 130 | reply = yield channel.queue_declare(exclusive=True) |
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| 131 | queue_name = reply.queue |
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| 132 | msgnum = 0 |
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| 133 | routing_keys = topics.split(',') |
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| 134 | for routing_key in routing_keys: |
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| 135 | channel.queue_bind( |
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| 136 | exchange=exchange_name, queue=queue_name, routing_key=routing_key) |
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| 137 | print ' [*] Waiting for messages. To exit press CTRL+C' |
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| 138 | yield channel.basic_consume( |
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| 139 | queue=queue_name, no_ack=True, consumer_tag='qtag') |
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| 140 | queue = yield connection.queue('qtag') |
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| 141 | while True: |
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| 142 | msg = yield queue.get() |
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| 143 | msgnum += 1 |
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| 144 | print (' [%04d] Received %r from channel #%d ' |
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| 145 | 'with facility and severity [%s]') % ( |
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| 146 | msgnum, msg.content.body, channel.id, msg.routing_key) |
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| 147 | returnValue(result) |
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| 148 | |
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| 149 | @inlineCallbacks |
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| 150 | def consume6(result, topics): |
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| 151 | connection, channel = result |
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| 152 | yield channel.queue_declare(queue='rpc_queue') |
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| 153 | msgnum = 0 |
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| 154 | print ' [*] Waiting for RPC requests. To exit press CTRL+C' |
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| 155 | yield channel.basic_qos(prefetch_count=1) |
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| 156 | yield channel.basic_consume( |
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| 157 | queue='rpc_queue', no_ack=True, consumer_tag='qtag') |
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| 158 | queue = yield connection.queue('qtag') |
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| 159 | |
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| 160 | def fib(n): |
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| 161 | if n == 0: |
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| 162 | return 0 |
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| 163 | elif n == 1: |
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| 164 | return 1 |
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| 165 | else: |
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| 166 | return fib(n-1) + fib(n-2) |
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| 167 | |
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| 168 | while True: |
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| 169 | msg = yield queue.get() |
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| 170 | input_ = msg.content.body |
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| 171 | properties = msg.content.properties |
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| 172 | msgnum += 1 |
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| 173 | print ' [%04d] Received fib(%r) from channel #%d' % ( |
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| 174 | msgnum, input_, channel.id) |
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| 175 | output = fib(int(input_)) |
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| 176 | response = Content(str(output)) |
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| 177 | response['correlation id'] = properties['correlation id'] |
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| 178 | channel.basic_publish(exchange='', routing_key=properties['reply to'], content=response) |
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| 179 | returnValue(result) |
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| 180 | |
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| 181 | @inlineCallbacks |
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| 182 | def publish1(result, message, count_): |
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| 183 | connection, channel = result |
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| 184 | yield channel.queue_declare(queue=QUEUE_NAME) |
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| 185 | for i in range(count_): |
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| 186 | msg = Content('%s [%04d]' % (message, i,)) |
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| 187 | yield channel.basic_publish( |
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| 188 | exchange='', routing_key=QUEUE_NAME, content=msg) |
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| 189 | print ' [x] Sent "%s [%04d]"' % (message, i,) |
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| 190 | returnValue(result) |
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| 191 | |
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| 192 | @inlineCallbacks |
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| 193 | def publish2(result, message, count_): |
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| 194 | connection, channel = result |
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| 195 | yield channel.queue_declare(queue=QUEUE_NAME, durable=True) |
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| 196 | for i in range(count_): |
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| 197 | msg = Content('%s [%04d]' % (message, i,)) |
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| 198 | msg['delivery mode'] = 2 |
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| 199 | yield channel.basic_publish( |
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| 200 | exchange='', routing_key=QUEUE_NAME, content=msg) |
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| 201 | print ' [x] Sent "%s [%04d]"' % (message, i,) |
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| 202 | returnValue(result) |
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| 203 | |
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| 204 | @inlineCallbacks |
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| 205 | def publish3(result, message, count_): |
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| 206 | connection, channel = result |
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| 207 | yield channel.exchange_declare(exchange=EXCHANGE_NAME, type='fanout') |
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| 208 | for i in range(count_): |
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| 209 | msg = Content('%s [%04d]' % (message, i,)) |
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| 210 | yield channel.basic_publish( |
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| 211 | exchange=EXCHANGE_NAME, routing_key='', content=msg) |
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| 212 | print ' [x] Sent "%s [%04d]"' % (message, i,) |
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| 213 | returnValue(result) |
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| 214 | |
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| 215 | @inlineCallbacks |
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| 216 | def publish4(result, message, count_): |
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| 217 | connection, channel = result |
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| 218 | exchange_name = '%s_4' % EXCHANGE_NAME |
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| 219 | yield channel.exchange_declare(exchange=exchange_name, type='direct') |
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| 220 | for i in range(count_): |
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| 221 | msg = Content('%s [%04d]' % (message, i,)) |
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| 222 | severity = SEVERITIES[i % len(SEVERITIES)] |
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| 223 | yield channel.basic_publish( |
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| 224 | exchange=exchange_name, routing_key=severity, content=msg) |
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| 225 | print ' [x] Sent "%s [%04d]" with severity [%s]' % ( |
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| 226 | message, i, severity,) |
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| 227 | returnValue(result) |
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| 228 | |
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| 229 | @inlineCallbacks |
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| 230 | def publish5(result, message, count_): |
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| 231 | connection, channel = result |
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| 232 | exchange_name = '%s_5' % EXCHANGE_NAME |
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| 233 | yield channel.exchange_declare(exchange=exchange_name, type='topic') |
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| 234 | for i in range(count_): |
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| 235 | msg = Content('%s [%04d]' % (message, i)) |
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| 236 | severity = SEVERITIES[i % len(SEVERITIES)] |
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| 237 | facility = FACILITIES[i % len(FACILITIES)] |
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| 238 | routing_key = '%s.%s' % (facility, severity) |
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| 239 | yield channel.basic_publish( |
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| 240 | exchange=exchange_name, routing_key=routing_key, content=msg) |
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| 241 | print ' [x] Sent "%s [%04d]" with facility and severity [%s]' % ( |
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| 242 | message, i, routing_key) |
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| 243 | returnValue(result) |
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| 244 | |
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| 245 | @inlineCallbacks |
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| 246 | def publish6(result, message, count_): |
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| 247 | connection, channel = result |
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| 248 | |
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| 249 | @inlineCallbacks |
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| 250 | def call(n): |
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| 251 | corr_id = str(uuid.uuid4()) |
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| 252 | reply = yield channel.queue_declare(exclusive=True) |
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| 253 | callback_queue = reply.queue |
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| 254 | msg = Content(str(n)) |
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| 255 | msg['correlation id'] = corr_id |
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| 256 | msg['reply to'] = callback_queue |
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| 257 | yield channel.basic_publish( |
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| 258 | exchange='', routing_key='rpc_queue', content=msg) |
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| 259 | print ' [x] Sent "%s"' % n |
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| 260 | yield channel.basic_consume( |
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| 261 | queue=callback_queue, no_ack=True, consumer_tag='qtag') |
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| 262 | queue = yield connection.queue('qtag') |
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| 263 | while True: |
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| 264 | response = yield queue.get() |
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| 265 | if response.content.properties['correlation id'] == corr_id: |
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| 266 | returnValue(response.content.body) |
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| 267 | |
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| 268 | print ' [x] Requesting fib(%s)' % message |
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| 269 | response = yield call(message) |
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| 270 | print ' [.] Got %r' % response |
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| 271 | returnValue(result) |
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| 272 | |
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| 273 | PUBLISH_EXAMPLES = { |
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| 274 | 'publish1': publish1, |
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| 275 | 'publish2': publish2, |
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| 276 | 'publish3': publish3, |
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| 277 | 'publish4': publish4, |
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| 278 | 'publish5': publish5, |
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| 279 | 'publish6': publish6, |
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| 280 | } |
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| 281 | |
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| 282 | CONSUME_EXAMPLES = { |
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| 283 | 'consume1': consume1, |
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| 284 | 'consume2': consume2, |
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| 285 | 'consume3': consume3, |
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| 286 | 'consume4': consume4, |
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| 287 | 'consume5': consume5, |
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| 288 | 'consume6': consume6, |
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| 289 | } |
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| 290 | |
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| 291 | ALL_EXAMPLES = {} |
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| 292 | ALL_EXAMPLES.update(PUBLISH_EXAMPLES) |
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| 293 | ALL_EXAMPLES.update(CONSUME_EXAMPLES) |
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| 294 | |
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| 295 | |
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| 296 | def check_cmd_line(options, args, abort): |
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| 297 | """ |
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| 298 | Check the command line options and args, and exit with an error message |
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| 299 | if something is not acceptable. |
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| 300 | """ |
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| 301 | if args: |
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| 302 | abort('No arguments needed') |
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| 303 | if not 0 < options.port < 65536: |
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| 304 | abort('Please specify a port number between 1 and 65535 included') |
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| 305 | if options.example not in ALL_EXAMPLES.keys(): |
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| 306 | abort('Please specify one of the following, as an example name: %s' % |
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| 307 | ALL_EXAMPLES.keys()) |
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| 308 | if options.example in PUBLISH_EXAMPLES and options.message is None: |
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| 309 | abort('Please provide a message to publish') |
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| 310 | if options.message is not None and (options.example not in PUBLISH_EXAMPLES): |
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| 311 | abort('Setting the message is only meaningful for publish examples') |
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| 312 | if options.count < 1: |
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| 313 | abort('Please set a positive number of messages') |
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| 314 | return (options.port, options.example, options.message, options.count, |
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| 315 | options.topics) |
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| 316 | |
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| 317 | def parse_cmd_line(parser, all_args): |
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| 318 | """ |
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| 319 | Parse command line arguments using the optparse library. |
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| 320 | Return (options, args). |
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| 321 | """ |
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| 322 | parser.set_usage( |
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| 323 | 'Usage: %s -p -e [producer options: -m -c | ' |
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| 324 | 'consumer options: -t topic1,topic2,...]' % all_args[0]) |
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| 325 | all_args = all_args[1:] |
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| 326 | parser.add_option('-p', '--port', dest='port', type='int', |
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| 327 | help='RabbitMQ server port number') |
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| 328 | parser.add_option('-e', '--example', dest='example', |
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| 329 | help='example name: "produceX" or "consumeX", with X from 1 to 6') |
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| 330 | parser.add_option('-m', '--message', dest='message', |
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| 331 | help='message to send as a producer') |
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| 332 | parser.add_option('-c', '--count', dest='count', type='int', |
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| 333 | help='num. of messages to send as a producer: default: %d' % NUM_MSGS) |
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| 334 | parser.add_option('-t', '--topics', dest='topics', |
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| 335 | help='topics to subscribe this consumer to') |
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| 336 | parser.set_defaults(count=NUM_MSGS, topics=DEFAULT_TOPICS) |
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| 337 | return parser.parse_args(all_args) |
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| 338 | |
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| 339 | def main(all_args=None): |
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| 340 | """The main""" |
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| 341 | all_args = all_args or [] |
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| 342 | parser = optparse.OptionParser() |
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| 343 | options, args = parse_cmd_line(parser, all_args) |
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| 344 | (port, example, message, count_, topics) = check_cmd_line( |
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| 345 | options, args, parser.error) |
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| 346 | |
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| 347 | host = 'localhost' |
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| 348 | vhost = '/' |
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| 349 | username = 'guest' |
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| 350 | password = 'guest' |
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| 351 | #spec = txamqp.spec.load('src/specs/standard/amqp0-8.stripped.xml') |
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| 352 | spec = txamqp.spec.load('garbage/amqp0-8.stripped.xml') |
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| 353 | |
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| 354 | delegate = TwistedDelegate() |
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| 355 | |
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| 356 | d = ClientCreator(reactor, AMQClient, delegate=delegate, vhost=vhost, |
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| 357 | spec=spec).connectTCP(host, port) |
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| 358 | |
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| 359 | d.addCallback(gotConnection, username, password) |
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| 360 | if example in PUBLISH_EXAMPLES: |
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| 361 | d.addCallback(ALL_EXAMPLES[example], message, count_) |
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| 362 | else: |
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| 363 | d.addCallback(ALL_EXAMPLES[example], topics) |
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| 364 | d.addCallback(publisher_cleanup) |
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| 365 | d.addErrback(lambda f: sys.stderr.write(str(f))) |
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| 366 | reactor.run() |
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| 367 | |
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| 368 | if __name__ == "__main__": |
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| 369 | main(all_args=sys.argv) |
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