add percolate api to groovy client

modules/elasticsearch/src/main/java/org/elasticsearch/action/percolate/PercolateRequest.java

@@ -50,7 +50,7 @@ public class PercolateRequest extends SingleCustomOperationRequest {
     private int sourceLength;
     private boolean sourceUnsafe;
 
-    PercolateRequest() {
+    public PercolateRequest() {
 
     }
 

plugins/lang/groovy/src/main/groovy/org/elasticsearch/groovy/client/GClient.groovy

@@ -32,6 +32,8 @@ import org.elasticsearch.action.get.GetResponse
 import org.elasticsearch.action.index.IndexRequest
 import org.elasticsearch.action.index.IndexResponse
 import org.elasticsearch.action.mlt.MoreLikeThisRequest
+import org.elasticsearch.action.percolate.PercolateRequest
+import org.elasticsearch.action.percolate.PercolateResponse
 import org.elasticsearch.action.search.SearchRequest
 import org.elasticsearch.action.search.SearchResponse
 import org.elasticsearch.client.Client
@@ -40,6 +42,7 @@ import org.elasticsearch.client.action.delete.DeleteRequestBuilder
 import org.elasticsearch.client.action.deletebyquery.DeleteByQueryRequestBuilder
 import org.elasticsearch.client.action.get.GetRequestBuilder
 import org.elasticsearch.client.action.index.IndexRequestBuilder
+import org.elasticsearch.client.action.percolate.PercolateRequestBuilder
 import org.elasticsearch.client.action.search.SearchRequestBuilder
 import org.elasticsearch.client.action.support.BaseRequestBuilder
 import org.elasticsearch.client.internal.InternalClient
@@ -146,6 +149,19 @@ class GClient {
         MoreLikeThisRequest.metaClass.searchSource = {Closure c ->
             delegate.searchSource(new GXContentBuilder().buildAsBytes(c, contentType))
         }
+
+        PercolateRequest.metaClass.setSource = {Closure c ->
+            delegate.source(new GXContentBuilder().buildAsBytes(c, indexContentType))
+        }
+        PercolateRequest.metaClass.source = {Closure c ->
+            delegate.source(new GXContentBuilder().buildAsBytes(c, indexContentType))
+        }
+        PercolateRequestBuilder.metaClass.setSource = {Closure c ->
+            delegate.setSource(new GXContentBuilder().buildAsBytes(c, indexContentType))
+        }
+        PercolateRequestBuilder.metaClass.source = {Closure c ->
+            delegate.setSource(new GXContentBuilder().buildAsBytes(c, indexContentType))
+        }
     }
 
     public static XContentType contentType = XContentType.SMILE
@@ -303,6 +319,24 @@ class GClient {
         client.search(request, listener)
     }
 
+    PercolateRequestBuilder preparePercolate(String index, String type) {
+        return client.preparePercolate(index, type);
+    }
+
+    GActionFuture<PercolateResponse> percolate(Closure c) {
+        PercolateRequest request = new PercolateRequest();
+        c.resolveStrategy = resolveStrategy
+        c.setDelegate request
+        c.call()
+        percolate(request)
+    }
+
+    GActionFuture<PercolateResponse> percolate(PercolateRequest request) {
+        GActionFuture<PercolateResponse> future = new GActionFuture<PercolateResponse>(internalClient.threadPool(), request)
+        client.percolate(request, future)
+        return future
+    }
+
     GActionFuture<SearchResponse> moreLikeThis(Closure c) {
         MoreLikeThisRequest request = new MoreLikeThisRequest()
         c.resolveStrategy = resolveStrategy