Topics can both export and import messages. Accordingly, you can configure topic definitions (in the configuration file topics.conf
) with import
and export
properties that specify one or more external transports:
(For general information about topics.conf
syntax and semantics, see topics. You can also configure topics using the administration tool command addprop topic
.)
For example, the following tibemsadmin
commands configure the topic myTopics.news
to import messages on the transports RV01
and RV02
, and to export messages on the transport RV02
.
Rendezvous messages with subject myTopics.news
arrive at tibemsd
over the transports RV
01 and RV
02. EMS clients can receive those messages by subscribing to myTopics.news
.
EMS messages sent to myTopics.news
are exported to Rendezvous over transport RV
02. Rendezvous clients of the corresponding daemons can receive those messages by subscribing to myTopics.news
.
When a topic specifies import on a connected transport, tibemsd
imports messages only when the topic has registered subscribers.
Wildcards in the import
and export
properties obey EMS syntax and semantics (which is identical to Rendezvous syntax and semantics); see Destination NameSyntax and Semantics.
You can import and export TIBCO Rendezvous certified messages (tibrvcm
transport) to EMS topics. Rendezvous certified transports guarantee message delivery.
tibrvcm
transports can store information about subjects in a ledger file. You can review the ledger file using an administration tool command; see show rvcmtransportledger
).
For more information about ledger files, see TIBCO Rendezvous documentation.
TIBCO Enterprise Message Service™ User’s Guide Software Release 4.3, February 2006 Copyright © TIBCO Software Inc. All rights reserved www.tibco.com |