Taming The Rabbit Writing RabbitMQ
Plugins Alvaro Videla - VMwareWednesday, October 24, 12

About Me • Developer Advocate
for Cloud Foundry • Blog: http://videlalvaro.github.com/ • Twitter: @old_soundWednesday, October 24, 12

About Me • Developer Advocate
for Cloud Foundry • Blog: http://videlalvaro.github.com/ • Twitter: @old_sound • I created gifsockets™Wednesday, October 24, 12

About Me Co-authored RabbitMQ in
Action http://bit.ly/rabbitmqWednesday, October 24, 12

RabbitMQWednesday, October 24, 12

RabbitMQ • Enterprise Messaging System
• Open Source MPL • Written in Erlang/OTP • Messaging via AMQP • Acquired by Spring Source (VMware)Wednesday, October 24, 12

Features • Reliable and High
Scalable • Easy To install • Easy To Cluster • Runs on: Windows, Solaris, Linux, OSX • AMQP 0.8 - 0.9.1Wednesday, October 24, 12

Wednesday, October 24, 12

Extensible • Plugin System •
Official Plugins • Community PluginsWednesday, October 24, 12

Extensible • Plugin System •
Official Plugins • Community Plugins • Plugins must be written in ErlangWednesday, October 24, 12

Wednesday, October 24, 12

What can you do with
plugins?Wednesday, October 24, 12

Add new ProtocolsWednesday, October 24,
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STOMPWednesday, October 24, 12

STOMP COMMAND header1:value1 header2:value2 Body^@Wednesday,
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STOMP CONNECT accept-version:1.1 host:stomp.github.org ^@Wednesday,
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STOMP CONNECTED version:1.1 ^@Wednesday, October
24, 12

Websockets + STOMP = WebSTOMPWednesday,
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Add Authentication MechanismsWednesday, October 24,
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LDAPWednesday, October 24, 12

SSLWednesday, October 24, 12

Add your own Message StoreWednesday,
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Must Read http://www.rabbitmq.com/blog/2011/01/20/rabbitmq- backing-stores-databases-and-disks/Wednesday, October
24, 12

Wrap Erlang apps together with
RabbitMQWednesday, October 24, 12

cowboy-wrapperWednesday, October 24, 12

ldap-wrapperWednesday, October 24, 12

webmachine-wrapperWednesday, October 24, 12

Add extra functionality to the
brokerWednesday, October 24, 12

RabbitMQ Management PluginWednesday, October 24,
12

http://www.rabbitmq.com/img/management/overview.pngWednesday, October 24, 12

RabbitMQ Shovel PluginWednesday, October 24,
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Create your Own ExchangesWednesday, October
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Why?Wednesday, October 24, 12

ExchangesWednesday, October 24, 12

Message Flow http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_MRG/1.0/html/Messaging_Tutorial/chap-Messaging_Tutorial-Initial_Concepts.htmlWednesday, October 24,
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AMQP Model • Exchanges •
Message Queues • Bindings • Rules for binding themWednesday, October 24, 12

Exchange Types • Fanout •
Direct • TopicWednesday, October 24, 12

http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_MRG/1.0/html/Messaging_Tutorial/sect-Messaging_Tutorial-Initial_Concepts- Fanout_Exchange.htmlWednesday, October 24, 12

http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_MRG/1.0/html/Messaging_Tutorial/sect-Messaging_Tutorial-Initial_Concepts- Direct_Exchange.htmlWednesday, October 24, 12

http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_MRG/1.0/html/Messaging_Tutorial/sect-Messaging_Tutorial-Initial_Concepts- Topic_Exchange.htmlWednesday, October 24, 12

random-exchangeWednesday, October 24, 12

consistent-hash-exchangeWednesday, October 24, 12

riak-exchangeWednesday, October 24, 12

rabbitmq-global-fanout-exchangeWednesday, October 24, 12

recent-history-exchangeWednesday, October 24, 12

recent-history-exchange user_x Using the recent
history exchange New Msg Last N messages Msg New Chat Room Msg Exchange Cache Cached New New New Msgs Msg Msg Msg user_a user_b user_c new_user http://manning.com/videla/Wednesday, October 24, 12

Exchange BehavioursWednesday, October 24, 12

recent-history-exchange Caches up to 20
messages Recent History Exchange route/2 Delivers add_binding/3 cached msgs to new client delete/3 Drops cached messages http://manning.com/videla/Wednesday, October 24, 12

Env Setup hg clone http://hg.rabbitmq.com/rabbitmq-public-umbrella
cd rabbitmq-public-umbrella make coWednesday, October 24, 12

File Structure |-- rabbitmq-public-umbrella |
|-- myplugin-folder | | | -- package.mk | | | -- MakefileWednesday, October 24, 12

RabbitMQ Boot Steps https://github.com/videlalvaro/rabbit-internals/blob/master/rabbit_boot_process.mdWednesday, October
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RabbitMQ Boot StepsWednesday, October 24,
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RabbitMQ Boot Steps -rabbit_boot_step({recovery, [{description,
"exchange, queue and binding recovery"}, {mfa, {rabbit, recover, []}}, {requires, empty_db_check}, {enables, routing_ready}]}).Wednesday, October 24, 12

RabbitMQ Boot Steps -rabbit_boot_step({msg_store_bitcask_index, [{description,
"Bitcask Index for rabbit_msg_store"}, {mfa, {application, set_env, [rabbit, msg_store_index_module, ?MODULE]}}, {enables, recovery}]}). Modify Configuration at StartupWednesday, October 24, 12

Demo CodeWednesday, October 24, 12

Managing PluginsWednesday, October 24, 12

rabbitmq-plugins $ rabbitmq-plugins list $
rabbitmq-plugins enable plugin_name $ rabbitmq-plugins disable plugin_name http://www.rabbitmq.com/man/rabbitmq-plugins.1.man.htmlWednesday, October 24, 12

ACHTUNG! • Plugins Run in
the same Erlang processWednesday, October 24, 12

ACHTUNG! • Plugins Run in
the same Erlang process • They may crash your brokerWednesday, October 24, 12

Have Fun and Experiment!Wednesday, October
24, 12

Questions?Wednesday, October 24, 12

Thanks! Álvaro Videla http://twitter.com/old_sound http://github.com/videlalvaro
http://www.slideshare.net/old_soundWednesday, October 24, 12