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Chapter 242. OSGi PAX Logging Component
Available as of Camel version 2.6
The paxlogging component can be used in an OSGi environment to receive PaxLogging events and process them.
242.1. Dependencies
Maven users need to add the following dependency to their pom.xml
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-paxlogging</artifactId>
<version>${camel-version}</version>
</dependency>
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-paxlogging</artifactId>
<version>${camel-version}</version>
</dependency>
where ${camel-version} must be replaced by the actual version of Camel (2.6.0 or higher).
242.2. URI format
paxlogging:appender[?options]
paxlogging:appender[?options]
where appender is the name of the pax appender that need to be configured in the PaxLogging service configuration.
242.3. URI options
The OSGi PAX Logging component supports 2 options which are listed below.
| Name | Description | Default | Type |
|---|---|---|---|
| bundleContext (consumer) | The OSGi BundleContext is automatic injected by Camel | BundleContext | |
| resolveProperty Placeholders (advanced) | Whether the component should resolve property placeholders on itself when starting. Only properties which are of String type can use property placeholders. | true | boolean |
The OSGi PAX Logging endpoint is configured using URI syntax:
paxlogging:appender
paxlogging:appenderwith the following path and query parameters:
242.3.1. Path Parameters (1 parameters):
| Name | Description | Default | Type |
|---|---|---|---|
| appender | Required Appender is the name of the pax appender that need to be configured in the PaxLogging service configuration. | String |
242.3.2. Query Parameters (4 parameters):
| Name | Description | Default | Type |
|---|---|---|---|
| bridgeErrorHandler (consumer) | Allows for bridging the consumer to the Camel routing Error Handler, which mean any exceptions occurred while the consumer is trying to pickup incoming messages, or the likes, will now be processed as a message and handled by the routing Error Handler. By default the consumer will use the org.apache.camel.spi.ExceptionHandler to deal with exceptions, that will be logged at WARN or ERROR level and ignored. | false | boolean |
| exceptionHandler (consumer) | To let the consumer use a custom ExceptionHandler. Notice if the option bridgeErrorHandler is enabled then this options is not in use. By default the consumer will deal with exceptions, that will be logged at WARN or ERROR level and ignored. | ExceptionHandler | |
| exchangePattern (consumer) | Sets the exchange pattern when the consumer creates an exchange. | ExchangePattern | |
| synchronous (advanced) | Sets whether synchronous processing should be strictly used, or Camel is allowed to use asynchronous processing (if supported). | false | boolean |
242.4. Message body
The in message body will be set to the received PaxLoggingEvent.
242.5. Example usage
<route>
<from uri="paxlogging:camel"/>
<to uri="stream:out"/>
</route>
<route>
<from uri="paxlogging:camel"/>
<to uri="stream:out"/>
</route>Configuration:
log4j.rootLogger=INFO, out, osgi:VmLogAppender, osgi:camel
log4j.rootLogger=INFO, out, osgi:VmLogAppender, osgi:camel
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