[rabbitmq-discuss] How to catch RESOURCE_LOCKED exceptions in erlang client

Fri Aug 16 09:36:14 BST 2013

On 16 Aug 2013, at 09:30, Tim Watson wrote:

Erm - quick errata: you also need

> 2. handle "exit signals" from other processes in the same way, linking or monitoring, then dealing with exits in handle_info
> 
> init(Config) ->
>    {ok, Conn} = amqp_connection:start(parse_config(Config)),
>    {ok, Chan} = amqp_connection:open_channel(Conn),
      link(Chan),
>    {ok, #state{ connection = Conn, channel = Chan }}.
> 

otherwise you won't get the {'EXIT', _, _} tuple if/when the channel process exits. With monitors it'd look like this:

init(Config) ->
    {ok, Conn} = amqp_connection:start(parse_config(Config)),
    {ok, Chan} = amqp_connection:open_channel(Conn),
    erlang:monitor(process, Chan),
    {ok, #state{ connection = Conn, channel = Chan }}.

%% ...

handle_info({'DOWN', _Ref, process, Pid, Reason}, State) ... etc

Cheers,
Tim