Github user nickwallen commented on a diff in the pull request:
https://github.com/apache/metron/pull/1254#discussion_r239114286
--- Diff:
metron-platform/metron-elasticsearch/src/main/java/org/apache/metron/elasticsearch/bulk/BulkDocumentWriter.java
---
@@ -0,0 +1,79 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.metron.elasticsearch.bulk;
+
+import org.apache.metron.indexing.dao.update.Document;
+
+import java.util.List;
+
+/**
+ * Writes documents to an index in bulk.
+ *
+ * <p>Partial failures within a batch can be handled individually by
registering
+ * a {@link FailureListener}.
+ *
+ * @param <D> The type of document to write.
+ */
+public interface BulkDocumentWriter<D extends Document> {
+
+ /**
+ * A listener that is notified when a set of documents have been
+ * written successfully.
+ * @param <D> The type of document to write.
+ */
+ interface SuccessListener<D extends Document> {
--- End diff --
Done. See latest commit.
---
