Camel Maven Plugin
The Camel Maven Plugin allows you to run your Enterprise Integration Patterns using Spring for Dependency Injection inside Maven along with being able to support Visualisation along with integration of the Visualisation diagrams into the standard maven reports for your project.
Goals Supported
Documentation | Reference Goal | Description |
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camel:run | Boots up Camel in a new JVM the context of a separately initiated Java thread using the Spring configuration at META-INF/spring/*.xml and runs your routing rules. From Camel 2.10 onwards also OSGi blueprint is supported to load from OSGI-INF/blueprint/*.xml (requires to configure the plugin to use blueprint). | |
camel:embedded | Boots up Camel in the same JVM as Maven using the Spring configuration at META-INF/spring/*.xml and runs your routing rules. From Camel 2.10 onwards also OSGi blueprint is supported to load from OSGI-INF/blueprint/*.xml (requires to configure the plugin to use blueprint). | |
camel:dot | deprecated: Generates DOT files and then HTML, PNG, SVG files for your EIP routing rules with integration into Maven Reports. This plugin only supports Spring XML files. | |
camel:validate | camel:validate | Camel 2.19: To validate your source code for invalid Camel endpoint uris. |
Adding the plugin to your pom.xml
Add the following in your <build><plugins> section
Note |
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You may override the default Spring application context file uri META-INF/spring/*.xml by using the applicationContextUri property in the camel-maven-plugin configuration. Paths may be split using a semi-colon (;). |
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<plugin>
<groupId>org.apache.camel</groupId>
<artifactId>camel-maven-plugin</artifactId>
<configuration>
<applicationContextUri>META-INF/spring/*.xml;YOUR_FILE_NAME_IN_THE_CLASS_PATH.xml</applicationContextUri>
</configuration>
</plugin>
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You can also specify what Main class to use when running the plugin. By default this is org.apache.camel.spring.Main
.
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<plugin>
<groupId>org.apache.camel</groupId>
<artifactId>camel-maven-plugin</artifactId>
<!-- optional, default value: org.apache.camel.spring.Main -->
<configuration>
<mainClass>mypackage.boot.camel.CamelStartup</mainClass>
</configuration>
</plugin>
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File based spring configuration files
In From Camel 1.4 onwards loading file based spring Spring context files via a file location is also supported. You configure this with the new fileApplicationContextUri option fileApplicationContextUri. Paths may be split using a semi-colon (;). This sort of file location is usable useful for web application projects that is web applications and you store spring configuration files in WEB-INF. It can also be used to replace configuration that requires an OSGi container with an equivalent non-OSGi configuration.
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<plugin> <groupId>org.apache.camel</groupId> <artifactId>camel-maven-plugin</artifactId> <configuration> <fileApplicationContextUri>src<fileApplicationContextUri> src/main/webapp/WEB-INF/camel*.xml<.xml; src/test/spring/test-context.xml </fileApplicationContextUri> </configuration> </plugin> |
Classpath
The plugin will construct a classpath of any Maven dependency with scope "compile". The classpath is output as an INFO log statement upon startup.
...
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log4j.rootLogger=INFO, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n
log4j.logger.org.apache.camel.impl.DefaultCamelContext=DEBUG, stdout
log4j.additivity.org.apache.camel.impl.DefaultCamelContext=false
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This should produce a log statement similar to:
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670 [org.apache.camel.spring.Main.main()] DEBUG org.apache.camel.impl.DefaultCamelContext
- Adding routes from: Routes: [Route[ [From[jms:queue:queueA]] -> [To[jms:queue:queueB], To[jms:queue:queueC]]]] routes: []
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...
For example add the following into your pom
Code Block | ||
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<project>
...
<reporting>
<plugins>
<plugin>
<groupId>org.apache.camel</groupId>
<artifactId>camel-maven-plugin</artifactId>
</plugin>
</plugins>
</reporting>
</project>
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Then when you run
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mvn site
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Your context will be booted up via the META-INF/spring/*.xml files, the DOT file generated and a nice HTML report created.
...