Synnefo

# Copyright 2012 GRNET S.A. All rights reserved.

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from synnefo.settings import BACKEND_PREFIX_ID, DEBUG, EXCHANGE_GANETI

try:

    prefix = BACKEND_PREFIX_ID.split('-')[0]

except TypeError, IndexError:

    raise Exception("Invalid BACKEND_PREFIX_ID")

# EXCHANGES

EXCHANGES = (EXCHANGE_GANETI,)

# QUEUES

QUEUE_OP = "%s-events-op" % prefix

QUEUE_NETWORK = "%s-events-network" % prefix

QUEUE_PROGRESS = "%s-events-progress" % prefix

QUEUE_CLUSTER = "%s-events-cluster" % prefix

QUEUES = (QUEUE_OP,

          QUEUE_NETWORK,

          QUEUE_PROGRESS,

          QUEUE_CLUSTER)

# ROUTING KEYS

# notifications of type "ganeti-op-status"

KEY_OP = 'ganeti.%s.event.op' % prefix

# notifications of type "ganeti-network-status"

KEY_NETWORK = 'ganeti.%s.event.network' % prefix

# notifications of type "ganeti-create-progress"

KEY_PROGRESS = 'ganeti.%s.event.progress' % prefix

KEY_CLUSTER = 'ganeti.event.cluster'

# BINDINGS:

BINDINGS = (

    # Queue           # Exchange        # RouteKey    # Handler

    (QUEUE_OP,        EXCHANGE_GANETI,  KEY_OP,       'update_db'),

    (QUEUE_NETWORK,   EXCHANGE_GANETI,  KEY_NETWORK,  'update_network'),

    (QUEUE_PROGRESS,  EXCHANGE_GANETI,  KEY_PROGRESS, 'update_build_progress'),

    (QUEUE_CLUSTER,   EXCHANGE_GANETI,  KEY_CLUSTER,  'update_cluster'),

)

## Extra for DEBUG:

if DEBUG is True:

    # Debug queue, retrieves all messages

    QUEUE_DEBUG = "%s-debug" % prefix

    QUEUES += (QUEUE_DEBUG,)

    BINDINGS += ((QUEUE_DEBUG, EXCHANGE_GANETI, "#", "dummy_proc"),)

def convert_queue_to_dead(queue):

    """Convert the name of a queue to the corresponding dead-letter one"""

    return queue + "-dl"

def convert_exchange_to_dead(exchange):

    """Convert the name of an exchange to the corresponding dead-letter one"""

    return exchange + "-dl"