[erlang-questions] Use Erlang AMQP client library

[Alexey Lebedeff]

Hi,

If you are using erlang.mk or rebar3 as build tool, you could just add
amqp_client to your dependencies, and everything will start working
automagically.

If for some legacy reasons you are using rebar2, then you could use
rebar-friendly fork of client at https://github.com/jbrisbin/amqp_client


Best,
Alexey

2015-12-16 18:09 GMT+03:00 YuanZhiqian <on-your-mark@REDACTED>:

> Hi guys,
>
>   I have a frustrating time tonight trying to use rabbitmq library for
> erlang in my project. There're two ways provided by the official sites: .ez
> archive file as well as in source code.
> https://www.rabbitmq.com/erlang-client.html
>
>   I wonder which one I should choose. I prefer to use the source code
> because in erlang's documentation page, it is said the loading code from
> archive file is an experimental feature and is not recommend,
> http://www.erlang.org/doc/man/code.html, besides, I'm not very sure how
> to use a .ez archive file.
>
>   On the other hand, the source code won't compile through, I searched in
> google and people says that it is not wise to compile source code by one's
> own to use rabbitmq at present, because of some tricky problem.
>
>   I have tried using rebar and make to build the source code, but both
> failed with complaints as folllows:
>
>
> $ rebar compile
> ==> amqp_client-3.5.7-src (compile)
> include/amqp_client.hrl:20: can't find include lib
> "rabbit_common/include/rabbit.hrl"
> include/amqp_client.hrl:21: can't find include lib
> "rabbit_common/include/rabbit_framing.hrl"
> src/amqp_gen_connection.erl:313: undefined macro 'INTERNAL_ERROR'
> include/amqp_client.hrl:23: record 'P_basic' undefined
> src/amqp_gen_connection.erl:174: record amqp_error undefined
> src/amqp_gen_connection.erl:176: record amqp_error undefined
> src/amqp_gen_connection.erl:212: function internal_error/3 undefined
> src/amqp_gen_connection.erl:215: record 'connection.close' undefined
> src/amqp_gen_connection.erl:266: record 'connection.close' undefined
> src/amqp_gen_connection.erl:273: record 'connection.close' undefined
> src/amqp_gen_connection.erl:275: record 'connection.close_ok' undefined
> src/amqp_gen_connection.erl:280: record 'connection.blocked' undefined
> src/amqp_gen_connection.erl:285: record 'connection.unblocked' undefined
> src/amqp_gen_connection.erl:291: record amqp_error undefined
> src/amqp_gen_connection.erl:352: record 'connection.close' undefined
> src/amqp_gen_connection.erl:355: record 'connection.close' undefined
> src/amqp_gen_connection.erl:357: variable 'Code' is unbound
> src/amqp_gen_connection.erl:357: variable 'Text' is unbound
> src/amqp_gen_connection.erl:368: record 'connection.close_ok' undefined
> src/amqp_gen_connection.erl:290: Warning: variable 'Other' is unused
>
>
>
> $ make
> rm -f deps.mk
> echo
> src/amqp_auth_mechanisms.erl:src/amqp_channel.erl:src/amqp_channels_manager.erl:src/amqp_channel_sup.erl:src/amqp_channel_sup_sup.erl:src/amqp_client.erl:src/amqp_connection.erl:src/amqp_connection_sup.erl:src/amqp_connection_type_sup.erl:src/amqp_direct_connection.erl:src/amqp_direct_consumer.erl:src/amqp_gen_connection.erl:src/amqp_gen_consumer.erl:src/amqp_main_reader.erl:src/amqp_network_connection.erl:src/amqp_rpc_client.erl:src/amqp_rpc_server.erl:src/amqp_selective_consumer.erl:src/amqp_sup.erl:src/amqp_uri.erl:src/rabbit_routing_util.erl:src/uri_parser.erl:include/amqp_client.hrl:include/amqp_client_internal.hrl:include/amqp_gen_consumer_spec.hrl:include/rabbit_routing_prefixes.hrl:
> | escript ../rabbitmq-server/generate_deps deps.mk ebin
> escript: Failed to open file: ../rabbitmq-server/generate_deps
> make: *** No rule to make target `deps.mk', needed by
> `ebin/amqp_auth_mechanisms.beam'.  Stop.
>
>
>
> Besides, in the README file, the instruction tells me to do like this:
>
>
>  $ git clone https://github.com/rabbitmq/rabbitmq-codegen.git
>  $ git clone https://github.com/rabbitmq/rabbitmq-server.git
>  $ git clone https://github.com/rabbitmq/rabbitmq-erlang-client.git
>  $ cd rabbitmq-erlang-client
>  $ make
>
>   Well, it won't compile too! And I am even more confused why I need to
> clone the rabbit erlang client again in this case, since the README file
> itself is already in the client's source code directory.
>
>
> To make a conclusion, my trouble here is:
>
> 1. Should I use .ez archive file or source code?
> 2. How to use .ez archive file, is it safe?
> 3. How should I deal with the compile errors?
> 4. Why do I need to clone another client's source code as told by the
> README file?
>
> I am used to put a library in "deps" folder in my project and rebar would
> build them altogether for me, I think that's a preferable choice, quite
> clear in terms of project's folder layout at least.
>
>
>   Any advice is appreciated :)
>
> Best regards
> Zhiqian
>
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