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2.2. Hot Deployment

Types of configuration file
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You can hot deploy the following types of configuration file:
  • Spring XML file, deployable with the suffix, .xml.
  • Blueprint XML file, deployable with the suffix, .xml.

Hot deploy directory
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If you have an existing Spring XML or blueprint XML configuration file, you can deploy the configuration file directly by copying it into the following hot deploy directory: 
InstallDir/deploy
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After deploying, the configuration file is activated immediately.

Prerequisites
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If you want to deploy Apache Camel routes in a blueprint configuration file, the camel-blueprint feature must be installed (which it is by default). If the camel-blueprint feature has been disabled, however, you can re-install it by entering the following console command: 
JBossFuse:karaf@root> features:install camel-blueprint
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Default bundle version
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When a Spring XML file or a Blueprint XML file is hot deployed, the XML file is automatically wrapped in an OSGi bundle and deployed as a bundle in the OSGi container. By default, the generated bundle has the version, 0.0.0.

Customizing the bundle version
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If you prefer to customize the bundle version, use the manifest element in the XML file. The manifest element enables you to override any of the headers in the generated bundle's META-INF/MANIFEST.MF file. In particular, you can use it to specify the bundle version.

Specifying the bundle version in a Spring XML file
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To specify the bundle version in a hot-deployed Spring XML file, define a manifest element as follows: 
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       >

  <manifest xmlns="http://karaf.apache.org/xmlns/deployer/spring/v1.0.0">
      Bundle-Version = 1.2.3.4
  </manifest>

  <camelContext xmlns="http://camel.apache.org/schema/spring">
    <route>
      <from uri="timer://myTimer?fixedRate=true&amp;period=2000"/>
      <to uri="log:ExampleRouter"/>
    </route>
  </camelContext>

</beans>
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The manifest element for Spring XML files belongs to the following schema namespace: 
http://karaf.apache.org/xmlns/deployer/spring/v1.0.0
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The contents of the manifest element are specified using the syntax of a Java properties file.
To specify the bundle version in a hot-deployed Blueprint XML file, define a manifest element as follows: 
<?xml version="1.0" encoding="UTF-8"?>
<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    >

  <manifest xmlns="http://karaf.apache.org/xmlns/deployer/blueprint/v1.0.0">
      Bundle-Version = 1.2.3.4
  </manifest>

  <camelContext xmlns="http://camel.apache.org/schema/blueprint">
    <route>
      <from uri="timer://myTimer?fixedRate=true&amp;period=2000"/>
      <to uri="log:ExampleRouter"/>
    </route>
  </camelContext>

</blueprint>
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The manifest element for Blueprint XML files belongs to the following schema namespace: 
http://karaf.apache.org/xmlns/deployer/blueprint/v1.0.0
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The contents of the manifest element are specified using the syntax of a Java properties file.
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