| <?xml version="1.0"?> |
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| <document> |
| |
| <properties> |
| <title>Fulcrum YAAFI Avalon Container Reconfiguration Service</title> |
| <author email="siegfried.goeschl@it20one.at">Siegfried Goeschl</author> |
| </properties> |
| |
| <body> |
| |
| <section name="Overview"> |
| <p> |
| This service uses a background thread to monitor a list of configuration |
| files. A resource is loaded by using a resource name and an InputStreamLocator. |
| The a SHA-1 hashcode is derived and compared to the previous hashcode. |
| If a change is detected either the whole container or a list of |
| services are reconfigured. This service allows reconfiguration |
| support without using client/server communication. |
| </p> |
| </section> |
| |
| <section name="Configuration"> |
| |
| <subsection name="Role Configuration"> |
| <source> |
| <![CDATA[ |
| <role |
| name="org.apache.fulcrum.yaafi.service.reconfiguration.ReconfigurationService" |
| shorthand="ReconfigurationService" |
| default-class="org.apache.fulcrum.yaafi.service.reconfiguration.ReconfigurationServiceImpl" |
| early-init="true" |
| description="Monitors configuration files to reconfigure YAAFI" |
| /> |
| ]]> |
| </source> |
| </subsection> |
| |
| <subsection name="Example Component Configuration"> |
| <p> |
| The following configuration checks every 5 seconds |
| if the files have changed. Changing "TestComponentConfig" |
| triggers the reconfiguration of the container whereas a change |
| of "TestParameters.properties" would reconfigure the two |
| listed services. |
| </p> |
| <source> |
| <![CDATA[ |
| <ReconfigurationService interval="5000"> |
| <entry> |
| <location>./src/test/TestComponentConfig.xml</location> |
| </entry> |
| <entry> |
| <location>./src/test/TestParameters.properties</location> |
| <services> |
| <service name="org.apache.fulcrum.yaafi.TestComponent"/> |
| <service name="org.apache.fulcrum.yaafi.service.systemproperty.SystemPropertyService"/> |
| </services> |
| </entry> |
| </ReconfigurationService> |
| ]]> |
| </source> |
| </subsection> |
| </section> |
| |
| </body> |
| |
| </document> |
