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https://issues.apache.org/jira/browse/DISPATCH-977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16452604#comment-16452604
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ASF GitHub Bot commented on DISPATCH-977:
-----------------------------------------
Github user grs commented on a diff in the pull request:
https://github.com/apache/qpid-dispatch/pull/293#discussion_r184127780
--- Diff: doc/new-book/routing.adoc ---
@@ -575,6 +575,20 @@ connector {
For information about additional attributes, see
link:{qdrouterdConfManPageUrl}#_connector[connector] in the `qdrouterd.conf`
man page.
--
+. If you want clients to send local transactions to the broker, create a
link route for the transaction coordinator:
++
+--
+[options="nowrap",subs="+quotes"]
+----
+linkRoute {
+ prefix: $coordinator <1>
+ connection: __CONNECTOR_NAME__
+ direction: in
+}
+----
+<1> The `$coordinator` prefix designates this link route as a transaction
coordinator. When the client opens a transacted session, the transactional
state is propagated along this link route to the broker.
--- End diff --
The coordinator link is used for declaring and completing (committing or
rolling back) the transactions. In the AMQP spec, the term 'transactional
state' is used to tie the publication and consumption of messages to a given
transaction, and is part of the transfer or disposition - loosely the message
or its acknowledgement - which do not go over the coordinator link.
Perhaps it would be less (potentially) confusing to change from 'the
transactional state is propagated along this link route to the broker' to
'requests to start or end a transaction are propagated along this link route to
the broker.' ??
> Document transaction support
> ----------------------------
>
> Key: DISPATCH-977
> URL: https://issues.apache.org/jira/browse/DISPATCH-977
> Project: Qpid Dispatch
> Issue Type: Improvement
> Components: Documentation
> Reporter: Ben Hardesty
> Assignee: Ben Hardesty
> Priority: Major
>
> Dispatch Router provides transaction support through link routes and
> $coordinator. This capability should be documented.
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