如何设置Elixir项目通过amqp使用RabbitMQ？

Question

我想通过amqp从我的elixir phoenix应用程序中使用rabbitMQ.我在官方网站上关注了教程,但在此期间mix.deps compile,我收到一个错误:

include/amqp_gen_consumer_spec.hrl:30: syntax error before: '/'
include/amqp_gen_consumer_spec.hrl:31: syntax error before: '/'
include/amqp_gen_consumer_spec.hrl:32: syntax error before: '/'
include/amqp_gen_consumer_spec.hrl:34: syntax error before: '/'
include/amqp_gen_consumer_spec.hrl:35: syntax error before: '/'
include/amqp_gen_consumer_spec.hrl:36: syntax error before: '/'
include/amqp_gen_consumer_spec.hrl:37: syntax error before: '/'
include/amqp_gen_consumer_spec.hrl:38: syntax error before: '/'
include/amqp_gen_consumer_spec.hrl:39: syntax error before: '/'
include/amqp_gen_consumer_spec.hrl:42: syntax error before: '/'
include/amqp_gen_consumer_spec.hrl:30: syntax error before: '/'
include/amqp_gen_consumer_spec.hrl:31: syntax error before: '/'
include/amqp_gen_consumer_spec.hrl:32: syntax error before: '/'
include/amqp_gen_consumer_spec.hrl:34: syntax error before: '/'
include/amqp_gen_consumer_spec.hrl:35: syntax error before: '/'
include/amqp_gen_consumer_spec.hrl:36: syntax error before: '/'
include/amqp_gen_consumer_spec.hrl:37: syntax error before: '/'
include/amqp_gen_consumer_spec.hrl:38: syntax error before: '/'
include/amqp_gen_consumer_spec.hrl:39: syntax error before: '/'
include/amqp_gen_consumer_spec.hrl:42: syntax error before: '/'
Compiling src/amqp_selective_consumer.erl failed:
ERROR: compile failed while processing /home/bmarkons/soc2016-marko/telegram/deps/amqp_client: rebar_abort
** (Mix) Could not compile dependency :amqp_client, "/usr/bin/rebar compile skip_deps=true deps_dir="/home/bmarkons/soc2016-marko/telegram/_build/dev/lib"" command failed. You can recompile this dependency with "mix deps.compile amqp_client", update it with "mix deps.update amqp_client" or clean it with "mix deps.clean amqp_client"

终端截图

我在mix.exs文件中只添加了:amqp和{:amqp,"〜> 0.1.4"}:

def application do
    [mod: {App, []},
     applications: [:phoenix, :phoenix_pubsub, :phoenix_html, :cowboy, :logger, :gettext,
                    :phoenix_ecto, :postgrex, :amqp]]
end

defp deps do
    [{:phoenix, "~> 1.2.0"},
     {:phoenix_pubsub, "~> 1.0"},
     {:phoenix_ecto, "~> 3.0"},
     {:postgrex, ">= 0.0.0"},
     {:phoenix_html, "~> 2.6"},
     {:phoenix_live_reload, "~> 1.0", only: :dev},
     {:gettext, "~> 0.11"},
     {:cowboy, "~> 1.0"},
     {:amqp, "~> 0.1.4"}]
end

我需要做些什么改变才能让我的灵丹妙药应用程序与RabbitMQ一起工作？

谢谢

Answer 1

这是:amqp项目中报告的问题(https://github.com/pma/amqp/issues/28)它无法使用Erlang 19进行编译.问题在于:amqp_client.存储库中的最后一个版本是固定的,但它不作为十六进制包存在.

2016-08-16更新:

如果您想AMQP在项目中使用Erlang 19,只需添加当前:amqp_client依赖项以覆盖随附的依赖项AMQP:

def deps do
  [{:amqp_client, git: "https://github.com/jbrisbin/amqp_client.git", override: true},
   {:amqp, "~> 0.1.4"}]
end

对于这个具体的例子,你应该有类似的东西:

defp deps do
  [{:phoenix, "~> 1.2.0"},
   {:phoenix_pubsub, "~> 1.0"},
   {:phoenix_ecto, "~> 3.0"},
   {:postgrex, ">= 0.0.0"},
   {:phoenix_html, "~> 2.6"},
   {:phoenix_live_reload, "~> 1.0", only: :dev},
   {:gettext, "~> 0.11"},
   {:cowboy, "~> 1.0"},
   {:amqp_client, git: "https://github.com/jbrisbin/amqp_client.git", override: true},
   {:amqp, "~> 0.1.4"]
end

要点:如果混合文件已经覆盖了依赖项,则应该覆盖:amqp_client使用AMQP事件的项目中的依赖项.

我希望这有帮助.

Answer 2

我必须按如下方式定义依赖项(分支信息)以使其运行:

defp deps do
[
  {:amqp_client, git: "https://github.com/dsrosario/amqp_client.git", branch: "erlang_otp_19", override: true},
  {:amqp, "~> 0.1.4"}
]

结束