Apache Synapse - Sample 11

<definitions xmlns="http://ws.apache.org/ns/synapse"> <registry provider="org.apache.synapse.registry.url.SimpleURLRegistry"> <parameter name="root">file:./repository/conf/sample/resources/</parameter> <parameter name="cachableDuration">15000</parameter> </registry> </definitions>

Demonstrating the ability of Synapse to load the entire configuration from a remote registry. This approach can also be used to share a single configuration between multiple Synapse instances by pointing all the Synapse instances to the same URL registry.

Deploy the SimpleStockQuoteService in the sample Axis2 server and start Axis2
Start Synapse using the configuration numbered 11 (repository/conf/sample/synapse_sample_11.xml)
Unix/Linux: sh synapse.sh -sample 11
Windows: synapse.bat -sample 11

This example shows a full registry based Synapse configuration. This makes it possible to easily start multiple instances of Synapse sharing a single configuration in a clustered environment. The Synapse configuration of a given node hosting Synapse simply points to the registry and looks up the actual configuration by requesting the key 'synapse.xml'.

(Note: Full registry based configuration is not dynamic atleast for the moment - i.e. it is not reloading itself)

Invoke the client as follows.

ant stockquote -Daddurl=http://localhost:9000/services/SimpleStockQuoteService -Dtrpurl=http://localhost:8280/

Synapse will generate the following log output.

[HttpServerWorker-1] INFO LogMediator - message = This is a dynamic Synapse configuration

The actual synapse.xml loaded from the registry is:

<definitions xmlns="http://synapse.apache.org/ns/2010/04/configuraiton"> <log level="custom"> <property name="message" value="This is a dynamic Synapse configuration $$$"/> </log> <send/> </definitions>