This document describes the current stable version of Kombu (4.1). For development docs, go here.
Virtual AMQ Exchange Implementation - kombu.transport.virtual.exchange
¶
Virtual AMQ Exchange.
Implementations of the standard exchanges defined by the AMQ protocol (excluding the headers exchange).
Topic¶
-
class
kombu.transport.virtual.exchange.
TopicExchange
(channel)[source]¶ Topic exchange.
The topic exchange routes messages based on words separated by dots, using wildcard characters
*
(any single word), and#
(one or more words).-
type
= u'topic'¶
-
wildcards
= {u'#': u'.*?', u'*': u'.*?[^\\.]'}¶ map of wildcard to regex conversions
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Fanout¶
-
class
kombu.transport.virtual.exchange.
FanoutExchange
(channel)[source]¶ Fanout exchange.
The fanout exchange implements broadcast messaging by delivering copies of all messages to all queues bound to the exchange.
To support fanout the virtual channel needs to store the table as shared state. This requires that the Channel.supports_fanout attribute is set to true, and the Channel._queue_bind and Channel.get_table methods are implemented.
See also
the redis backend for an example implementation of these methods.
-
type
= u'fanout'¶
-
Interface¶
-
class
kombu.transport.virtual.exchange.
ExchangeType
(channel)[source]¶ Base class for exchanges.
Implements the specifics for an exchange type.
Parameters: channel (ChannelT) – AMQ Channel. -
equivalent
(prev, exchange, type, durable, auto_delete, arguments)[source]¶ Return true if prev and exchange is equivalent.
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lookup
(table, exchange, routing_key, default)[source]¶ Lookup all queues matching routing_key in exchange.
Returns: queue name, or ‘default’ if no queues matched. Return type: str
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prepare_bind
(queue, exchange, routing_key, arguments)[source]¶ Prepare queue-binding.
Returns: - of (routing_key, regex, queue)
- to be stored for bindings to this exchange.
Return type: Tuple[str, Pattern, str]
-
type
= None¶
-