public void contributeService( DeploymentContext context, Service service ) throws Exception {
String chain = null; // Default if null, otherwise specific chain name defined in topoloy.xml
Map<String,Map<String,String>> params = null; // Default if null, otherwise map of per provider role map of name/value pairs.
ResourceDescriptor resource = context.addResource()
resource.role( "WEBHDFS" );
resource.pattern( "webhdfs/v1/?**" );
resource.pattern( "webhdfs/v1/**?**" );
context.contributeChain( service, resource, chain, params );
}
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