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postal.configuration
ifandelse edited this page May 10, 2014
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The postal.configuration object provides the concrete implementations of the bindingsResolver as well as 'constant' values used throughout postal (attached here to allow plugins to take advantage of those values).
###postal.configuration members:
| Member | Description |
|---|---|
resolver |
postal provides a default implementation called bindingsResolver. The resolver is the mechanism by which published message topics are matched to the subscribers which should receive the message. The resolver can be swapped out with a custom implementation (NOTE: postal v0.7.0 is slated to ship with a new resolver that matches the AMQP binding semantics exactly.) |
DEFAULT_CHANNEL |
a "constant" value of "/", which is provided to channel objects where the channel name has not been explicitly provided. |
SYSTEM_CHANNEL |
a "constant" value of "postal", and is used for internal, postal-specific messaging. For example, subscription.created and subscription.removed messages are published on this channel as SubscriptionDefinitions are created and unsubscribed, respectively. |