| /* |
| * 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.nemo.runtime.master.metric; |
| |
| import org.apache.reef.tang.annotations.DefaultImplementation; |
| |
| /** |
| * Metric message handler. |
| */ |
| @DefaultImplementation(MetricManagerMaster.class) |
| public interface MetricMessageHandler { |
| |
| /** |
| * Handle the received metric message. |
| * @param metricType a given type for the metric (ex. TaskMetric). |
| * @param metricId id of the metric. |
| * @param metricField field name of the metric. |
| * @param metricValue serialized metric data value. |
| */ |
| void onMetricMessageReceived(final String metricType, final String metricId, |
| final String metricField, final byte[] metricValue); |
| |
| /** |
| * Cleans up and terminates this handler. |
| */ |
| void terminate(); |
| } |