[CONF] Apache Qpid: Cheat Sheet for configuring Exchange Options (page created)

[confluence]

Page Created : qpid : Cheat Sheet for configuring Exchange Options Cheat Sheet for configuring Exchange Options has been created by Carl Trieloff (Oct 13, 2008). Content: Configuring Exchange Options The C++ Broker M4 or later supports the following additional Exchange options in addition to the standard AMQP define options Exchange Level Message sequencing Exchange Level Message sequencing This feature can be used to place a sequence number into each message's headers, based on the order they pass through an exchange. The sequencing starts at 0 and then wraps in an AMQP int64 type. The field name used is "qpid.msg_sequence" To use this feature an exchange needs to be declared specifying this option in the declare .... FieldTable args; args.setInt("qpid.msg_sequence",1); ... // now declare the exchange session.exchangeDeclare(arg::exchange="direct", arg::arguments=args); Then each message passing through that exchange will be numbers in the application headers. unit64_t seqNo; //after message transfer seqNo = message.getHeaders().getAsInt64("qpid.msg_sequence");

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