11 July 2016

ServiceMix-7.0.0.M2 Camel Context not resolving

ServiceMix 7.0.0.M2 containing Karaf 4.0.5 installs on first boot the Blueprint Core version 1.6.0  which clashes on XSD level with the containing Camel Blueprint and produces the following error if you deploy a bundle with a Camel context:

Unable to start blueprint container for bundle xxx/x.x.x.SNAPSHOT
org.xml.sax.SAXParseException: src-import.3.1: The namespace attribute, 'http://aries.apache.org/blueprint/xmlns/blueprint-ext/v1.0.0',
of an <import> element information item must be identical to the targetNamespace attribute,
'http://camel.apache.org/schema/blueprint', of the imported document.

Strange thing is, in the parent pom version 1.6.1 is declared. I did not search for the root cause of this issue since the 1.6.1 has issues with offline enviroments.
To get this solved we override the old versions with 1.6.2.  In the ServiceMix build just by add the following to the overrides.properties:

# workaround for Blueprint Core version 1.6.0 Camel XSD alignment issue, force usage of version 1.6.2

and the next to <installedBundles> in the assembly POM:


This forces Karaf to use the 1.6.2 version of Blueprint Core. Do not forget to increase the property placeholder in the parent pom.