| /* |
| * 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.executor; |
| |
| import com.google.protobuf.ByteString; |
| import org.apache.nemo.common.exception.UnknownFailureCauseException; |
| import org.apache.nemo.runtime.common.RuntimeIdManager; |
| import org.apache.nemo.runtime.common.comm.ControlMessage; |
| import org.apache.nemo.runtime.common.message.MessageEnvironment; |
| import org.apache.nemo.runtime.common.message.PersistentConnectionToMasterMap; |
| import org.apache.reef.annotations.audience.EvaluatorSide; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import javax.inject.Inject; |
| import java.util.concurrent.*; |
| |
| /** |
| * Metric sender that periodically flushes the collected metrics to Driver. |
| */ |
| @EvaluatorSide |
| public final class MetricManagerWorker implements MetricMessageSender { |
| |
| private final ScheduledExecutorService scheduledExecutorService; |
| private final BlockingQueue<ControlMessage.Metric> metricMessageQueue; |
| private final PersistentConnectionToMasterMap persistentConnectionToMasterMap; |
| |
| private static final int FLUSHING_PERIOD = 3000; |
| private static final Logger LOG = LoggerFactory.getLogger(MetricManagerWorker.class.getName()); |
| |
| @Inject |
| private MetricManagerWorker(final PersistentConnectionToMasterMap persistentConnectionToMasterMap) { |
| this.scheduledExecutorService = Executors.newSingleThreadScheduledExecutor(); |
| this.metricMessageQueue = new LinkedBlockingQueue<>(); |
| this.persistentConnectionToMasterMap = persistentConnectionToMasterMap; |
| final Runnable batchMetricMessages = () -> flushMetricMessageQueueToMaster(); |
| this.scheduledExecutorService.scheduleAtFixedRate(batchMetricMessages, 0, |
| FLUSHING_PERIOD, TimeUnit.MILLISECONDS); |
| } |
| |
| @Override |
| public void flush() { |
| flushMetricMessageQueueToMaster(); |
| persistentConnectionToMasterMap.getMessageSender(MessageEnvironment.RUNTIME_MASTER_MESSAGE_LISTENER_ID).send( |
| ControlMessage.Message.newBuilder() |
| .setId(RuntimeIdManager.generateMessageId()) |
| .setListenerId(MessageEnvironment.RUNTIME_MASTER_MESSAGE_LISTENER_ID) |
| .setType(ControlMessage.MessageType.MetricFlushed) |
| .build()); |
| } |
| |
| private synchronized void flushMetricMessageQueueToMaster() { |
| if (!metricMessageQueue.isEmpty()) { |
| // Build batched metric messages |
| int size = metricMessageQueue.size(); |
| |
| final ControlMessage.MetricMsg.Builder metricMsgBuilder = ControlMessage.MetricMsg.newBuilder(); |
| |
| LOG.debug("MetricManagerWorker Size: {}", size); |
| for (int i = 0; i < size; i++) { |
| final ControlMessage.Metric metric = metricMessageQueue.poll(); |
| LOG.debug("MetricManagerWorker addMetric: {}, {}, {}", size, i, metric); |
| metricMsgBuilder.addMetric(i, metric); |
| } |
| |
| persistentConnectionToMasterMap.getMessageSender(MessageEnvironment.RUNTIME_MASTER_MESSAGE_LISTENER_ID).send( |
| ControlMessage.Message.newBuilder() |
| .setId(RuntimeIdManager.generateMessageId()) |
| .setListenerId(MessageEnvironment.RUNTIME_MASTER_MESSAGE_LISTENER_ID) |
| .setType(ControlMessage.MessageType.MetricMessageReceived) |
| .setMetricMsg(metricMsgBuilder.build()) |
| .build()); |
| } |
| } |
| |
| @Override |
| public void send(final String metricType, final String metricId, |
| final String metricField, final byte[] metricValue) { |
| metricMessageQueue.add( |
| ControlMessage.Metric.newBuilder() |
| .setMetricType(metricType) |
| .setMetricId(metricId) |
| .setMetricField(metricField) |
| .setMetricValue(ByteString.copyFrom(metricValue)) |
| .build()); |
| } |
| |
| @Override |
| public void close() throws UnknownFailureCauseException { |
| scheduledExecutorService.shutdownNow(); |
| flushMetricMessageQueueToMaster(); |
| } |
| } |