[CAMEL-9439] Cannot use camel-geocoder in Karaf

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.16.1
• Fix Version/s: 2.15.6, 2.16.2, 2.17.0

Environment

Karaf 3.0.x, Java 1.8

• Estimated Complexity: Unknown
• Assignee: Andrea Cosentino
• Reporter: Matt Sicker
• Created: 21/Dec/15 17:47
• Updated: 23/Dec/15 15:17
• Resolved: 23/Dec/15 12:40

Description

From a fresh install of Karaf, I add the Camel feature repository and run feature:install camel-geocoder. Using a basic geocoder endpoint, I get the following exception:

java.lang.NoClassDefFoundError: com/google/gson/GsonBuilder
	at com.google.code.geocoder.Geocoder.geocode(Geocoder.java:56)
	at org.apache.camel.component.geocoder.GeoCoderProducer.process(GeoCoderProducer.java:89)
	at org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:61)
	... 23 more

This appears to be caused by the feature "wrap:mvn:com.google.code.geocoder-java/geocoder-java/0.16" which uses optional for all its import packages which is incorrect as it appears to require gson (amongst other things).

A quick fix was to also install camel-gson, but this should be handled transitively.