Red Hat Summit Red Hat SummitSupportKonsoleEntwicklerDemo startenKontakt

Dieser Inhalt ist in der von Ihnen ausgewählten Sprache nicht verfügbar.

4.10.6. Subscribe to a Headers Exchange

Changes
  • Updated April 2013.
  • Updated July 2013.
The following code creates a queue match-q, and subscribes it to the amq.match exchange using a binding key that matches messages that have a header key header1 with a value of value1:
AMQP 0-10

Python
rxheaders = ssn.receiver("match-q;{create: always, node: {type: queue}, link:{x-bindings:[{key: 'binding-name', exchange: 'amq.match', queue: 'match-q', arguments:{'x-match': 'any', 'header1': 'value1'}}]}}")
Copy to Clipboard Toggle word wrap

AMQP 1.0

C++
Receiver rxheaders = ssn.createReceiver("amq.match; {link: {name:match-q, filter:{value:{'x-match': 'any', 'header1': 'value1'}, name: headers, descriptor:'apache.org:legacy-amqp-headers-binding:map'}}}");
Copy to Clipboard Toggle word wrap

The x-match argument can take the values any, which matches messages with any of the key value pairs in the binding, or all, which matches messages that have all the key value pairs from the binding key in their header.
Note that you cannot match against multiple values for the same header. You can use multiple headers with different values, but only one value can be matched against a particular header.
AMQP 1.0 does not support link-scoped x-binding, and so a filter is used.
AMQP 0-10 uses a link-scoped x-binding. Note the x-bindings argument key. This argument creates a named handle for the binding, which is visible when running qpid-config exchanges -r. Without a handle, a binding cannot be deleted by name. A null key is valid, but in addition to not being able to be deleted by name, when a binding is created with a null handle, any further attempt to create a binding with a null handle on that exchange will be update the existing binding rather than create a new one.
Report a bug
Nach oben
Red Hat logoGithubredditYoutubeTwitter

Lernen

Testen, kaufen und verkaufen

Communitys

Über Red Hat Dokumentation

Wir helfen Red Hat Benutzern, mit unseren Produkten und Diensten innovativ zu sein und ihre Ziele zu erreichen – mit Inhalten, denen sie vertrauen können. Entdecken Sie unsere neuesten Updates.

Mehr Inklusion in Open Source

Red Hat hat sich verpflichtet, problematische Sprache in unserem Code, unserer Dokumentation und unseren Web-Eigenschaften zu ersetzen. Weitere Einzelheiten finden Sie in Red Hat Blog.

Über Red Hat

Wir liefern gehärtete Lösungen, die es Unternehmen leichter machen, plattform- und umgebungsübergreifend zu arbeiten, vom zentralen Rechenzentrum bis zum Netzwerkrand.

Theme

© 2025 Red Hat