Connection option for Consumer and Producer

[Shemeikka]

Description

Added new keyword 'connection' to both Consumer's and Producer's inits.

This accepts same values as AMQP-library's Connection.open/2

Using 'connection' keyword instead of 'uri' tells user that more values than just the connection string can be passed.

This would be a better fix for issue #141

The actual behavior is same as with 'uri' keyword. No actual logic changes were made.

The old 'uri' keyword can still be used.

Examples

# Using just connection string
def init() do
      [
        queue: "gen_rmq_wf_in_queue",
        exchange: {:fanout, "gen_rmq_in_wf_exchange"},
        routing_key: "#",
        prefetch_count: "10",
        connection: "amqp://guest:guest@localhost:5672",
        queue_ttl: 1000
      ]

# Using more options
def init() do
      [
        queue: "gen_rmq_wf_in_queue",
        exchange: {:fanout, "gen_rmq_in_wf_exchange"},
        routing_key: "#",
        prefetch_count: "10",
        connection: [host: "localhost", port: 5672, username: "guest", password: "guest"],
        queue_ttl: 1000
      ]

Checklist

• I have updated the documentation accordingly

[coveralls]

Coverage increased (+0.09%) to 89.2% when pulling 82598c2 on Shemeikka:connection_opts into a6fe01f on meltwater:master.

[vorce]

I like this a lot, thank you! Some small stuff I'd like to change.

[vorce]

Thanks a lot for the contribtion @Shemeikka