| /** |
| * 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.storm.metric; |
| |
| import org.apache.storm.metric.api.DataPoint; |
| import org.apache.storm.metric.api.IClusterMetricsConsumer; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.Collection; |
| |
| public class ClusterMetricsConsumerExecutor { |
| public static final Logger LOG = LoggerFactory.getLogger(ClusterMetricsConsumerExecutor.class); |
| private static final String ERROR_MESSAGE_PREPARATION_CLUSTER_METRICS_CONSUMER_FAILED = |
| "Preparation of Cluster Metrics Consumer failed. " + |
| "Please check your configuration and/or corresponding systems and relaunch Nimbus. " + |
| "Skipping handle metrics."; |
| |
| private IClusterMetricsConsumer metricsConsumer; |
| private String consumerClassName; |
| private Object registrationArgument; |
| |
| public ClusterMetricsConsumerExecutor(String consumerClassName, Object registrationArgument) { |
| this.consumerClassName = consumerClassName; |
| this.registrationArgument = registrationArgument; |
| } |
| |
| public void prepare() { |
| try { |
| metricsConsumer = (IClusterMetricsConsumer)Class.forName(consumerClassName).newInstance(); |
| metricsConsumer.prepare(registrationArgument); |
| } catch (Exception e) { |
| LOG.error("Could not instantiate or prepare Cluster Metrics Consumer with fully qualified name " + |
| consumerClassName, e); |
| |
| if (metricsConsumer != null) { |
| metricsConsumer.cleanup(); |
| } |
| metricsConsumer = null; |
| } |
| } |
| |
| public void handleDataPoints(final IClusterMetricsConsumer.ClusterInfo clusterInfo, final Collection<DataPoint> dataPoints) { |
| if (metricsConsumer == null) { |
| LOG.error(ERROR_MESSAGE_PREPARATION_CLUSTER_METRICS_CONSUMER_FAILED); |
| return; |
| } |
| |
| try { |
| metricsConsumer.handleDataPoints(clusterInfo, dataPoints); |
| } catch (Throwable e) { |
| LOG.error("Error while handling cluster data points, consumer class: " + consumerClassName, e); |
| } |
| } |
| |
| public void handleDataPoints(final IClusterMetricsConsumer.SupervisorInfo supervisorInfo, final Collection<DataPoint> dataPoints) { |
| if (metricsConsumer == null) { |
| LOG.error(ERROR_MESSAGE_PREPARATION_CLUSTER_METRICS_CONSUMER_FAILED); |
| return; |
| } |
| |
| try { |
| metricsConsumer.handleDataPoints(supervisorInfo, dataPoints); |
| } catch (Throwable e) { |
| LOG.error("Error while handling cluster data points, consumer class: " + consumerClassName, e); |
| } |
| } |
| |
| public void cleanup() { |
| if (metricsConsumer != null) { |
| metricsConsumer.cleanup(); |
| } |
| } |
| } |