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  public void contributeService( DeploymentContext context, Service service ) throws Exception {
    UrlRewriteRulesDescriptor serviceRules = loadRulesFromClassPath();
    UrlRewriteRulesDescriptor clusterRules = context.getDescriptor( "rewrite" );
    clusterRules.addRules( serviceRules );

    ResourceDescriptor resource;
    List<ServiceParamDescriptor> params;

    resource = context.getGatewayDescriptor().addResource();
    resource.role( "WEBHDFS" );
    resource.pattern( "webhdfs/v1/?**" );
    resource.pattern( "webhdfs/v1/**?**" );
    params = new ArrayList<ServiceParamDescriptor>();
    params.add( resource.createParam().role( "rewrite", "request.url", "/webhdfs/namenode/inbound/path" );
    params.add( resource.createParam().role( "rewrite", "response.headers", "/webhdfs/namenode/outbound/headers" );
    context.contributeChain( service, resource, params );

    resource = context.getGatewayDescriptor().addResource();
    nameNoderesource.role( "WEBHDFS" );
    nameNoderesource.pattern( "webhdfs/data/v1/**?**" );
    params = new ArrayList<ServiceParamDescriptor>();
    params.add( resource.createParam().role( "rewrite", "request.url", "/webhdfs/datanode/inbound/path" );
    context.contributeChain( service, resource, params );
  }