Pika could not take port from context_tracking_host

[davidlatwe]

My value of config.context_tracking_host is formated as host:port, which works before #1140 . Now with the latest Rez, following error shows when I requesting a context.

16:31:29 DEBUG    Using SelectPoller
16:31:29 DEBUG    Created default connection workflow <rez.vendor.pika.adapters.utils.connection_workflow.AMQPConnectionWorkflow object at 0x0000021B371FE278>
16:31:29 DEBUG    Starting AMQP Connection workflow asynchronously.
16:31:29 DEBUG    call_later: added timeout <rez.vendor.pika.adapters.select_connection._Timeout object at 0x0000021B371FE2E8> with deadline=1469717.828 and callback=functools.partial(<bound method AMQPConnectionWorkflow._start_new_cycle_async of <rez.vendor.pika.adapters.utils.connection_workflow.AMQPConnectionWorkflow object at 0x0000021B371FE278>>, first=True); now=1469717.828; delay=0
16:31:29 DEBUG    Beginning a new AMQP connection workflow cycle; attempts remaining after this: 0
16:31:29 DEBUG    call_later: added timeout <rez.vendor.pika.adapters.select_connection._Timeout object at 0x0000021B371FE0B8> with deadline=1469717.828 and callback=<bound method AMQPConnectionWorkflow._try_next_config_async of <rez.vendor.pika.adapters.utils.connection_workflow.AMQPConnectionWorkflow object at 0x0000021B371FE278>>; now=1469717.828; delay=0
16:31:29 DEBUG    _try_next_config_async: '192.168.1.65:5672':5672
16:31:29 ERROR    Address resolution failed: gaierror(11001, 'getaddrinfo failed')
16:31:29 DEBUG    process_timeouts: invoking callback=<bound method _AddressResolver._dispatch_result of <rez.vendor.pika.adapters.utils.selector_ioloop_adapter._AddressResolver object at 0x0000021B371FE320>>
16:31:29 DEBUG    add_callback_threadsafe: added callback=<bound method _AddressResolver._dispatch_result of <rez.vendor.pika.adapters.utils.selector_ioloop_adapter._AddressResolver object at 0x0000021B371FE320>>
16:31:29 DEBUG    Invoking asynchronous getaddrinfo() completion callback; host='192.168.1.65:5672'
16:31:29 ERROR    getaddrinfo failed: gaierror(11001, 'getaddrinfo failed').
16:31:29 ERROR    AMQP connection workflow failed: AMQPConnectionWorkflowFailed: 1 exceptions in all; last exception - gaierror(11001, 'getaddrinfo failed'); first exception - None.
16:31:29 ERROR    AMQPConnectionWorkflow - reporting failure: AMQPConnectionWorkflowFailed: 1 exceptions in all; last exception - gaierror(11001, 'getaddrinfo failed'); first exception - None
16:31:29 ERROR    Connection workflow failed: AMQPConnectionWorkflowFailed: 1 exceptions in all; last exception - gaierror(11001, 'getaddrinfo failed'); first exception - None
16:31:29 ERROR    Error in _create_connection().
Traceback (most recent call last):
  File "C:\Users\davidlatwe.lai\pipeline\rez\src\rez\vendor\pika\adapters\blocking_connection.py", line 452, in _create_connection
    raise self._reap_last_connection_workflow_error(error)
  File "C:\Users\davidlatwe.lai\pipeline\rez\src\rez\vendor\pika\adapters\utils\selector_ioloop_adapter.py", line 567, in _resolve
    self._flags)
  File "C:\miniconda3\envs\avalon\lib\socket.py", line 745, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno 11001] getaddrinfo failed
16:31:29 ERROR    Cannot connect to the message broker: [Errno 11001] getaddrinfo failed

Note these two lines

16:31:29 DEBUG    _try_next_config_async: '192.168.1.65:5672':5672
16:31:29 ERROR    Address resolution failed: gaierror(11001, 'getaddrinfo failed')

It appears that you have to split the host and port from url before feed into pika.

https://github.com/nerdvegas/rez/blob/b12cd4f2aefa48056f41517d90c0a3ed7f4c9a66/src/rez/utils/amqp.py#L69-L73

Another possible route is by pika.connection.URLParameters.