Retained messages
Inspecting the retained message store
To list the retained messages simply invoke vmq-admin retain show:
$ vmq-admin retain show+------------------+----------------+| payload | topic |+------------------+----------------+| a-third-message | a/third/topic ||some-other-message|some/other/topic|| a-message | some/topic || a-message | another/topic |+------------------+----------------+
Note, by default a maximum of 100 results are returned. This is a mechanism to protect the from overload as there can be millions of retained messages. Use --limit=<RowLimit> to override the default value.
Besides listing the retained messages it is also possible to filter them:
$ vmq-admin retain show --payload --topic=some/topic+---------+| payload |+---------+|a-message|+---------+
In the above example we list only the payload for the topic some/topic.
Another example where all topics are list with retained messages with a specific payload:
$ vmq-admin retain show --payload a-message --topic+-------------+| topic |+-------------+| some/topic ||another/topic|+-------------+
See the full set of options and documentation by invoking vmq-admin retain show --help.
