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/*
* 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.flink.runtime.rest.handler.taskmanager;
import org.apache.flink.api.common.time.Time;
import org.apache.flink.runtime.clusterframework.types.ResourceID;
import org.apache.flink.runtime.resourcemanager.ResourceManagerGateway;
import org.apache.flink.runtime.resourcemanager.exceptions.UnknownTaskExecutorException;
import org.apache.flink.runtime.rest.handler.HandlerRequest;
import org.apache.flink.runtime.rest.handler.RestHandlerException;
import org.apache.flink.runtime.rest.handler.legacy.metrics.MetricFetcher;
import org.apache.flink.runtime.rest.handler.legacy.metrics.MetricStore;
import org.apache.flink.runtime.rest.messages.EmptyRequestBody;
import org.apache.flink.runtime.rest.messages.MessageHeaders;
import org.apache.flink.runtime.rest.messages.taskmanager.TaskManagerDetailsInfo;
import org.apache.flink.runtime.rest.messages.taskmanager.TaskManagerIdPathParameter;
import org.apache.flink.runtime.rest.messages.taskmanager.TaskManagerInfo;
import org.apache.flink.runtime.rest.messages.taskmanager.TaskManagerMessageParameters;
import org.apache.flink.runtime.rest.messages.taskmanager.TaskManagerMetricsInfo;
import org.apache.flink.runtime.webmonitor.RestfulGateway;
import org.apache.flink.runtime.webmonitor.retriever.GatewayRetriever;
import org.apache.flink.util.ExceptionUtils;
import org.apache.flink.util.Preconditions;
import org.apache.flink.shaded.netty4.io.netty.handler.codec.http.HttpResponseStatus;
import javax.annotation.Nonnull;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CompletionException;
/**
* Handler which serves detailed TaskManager information.
*/
public class TaskManagerDetailsHandler extends AbstractTaskManagerHandler {
private final MetricFetcher metricFetcher;
private final MetricStore metricStore;
public TaskManagerDetailsHandler(
GatewayRetriever leaderRetriever,
Time timeout,
Map responseHeaders,
MessageHeaders messageHeaders,
GatewayRetriever resourceManagerGatewayRetriever,
MetricFetcher metricFetcher) {
super(leaderRetriever, timeout, responseHeaders, messageHeaders, resourceManagerGatewayRetriever);
this.metricFetcher = Preconditions.checkNotNull(metricFetcher);
this.metricStore = metricFetcher.getMetricStore();
}
@Override
protected CompletableFuture handleRequest(
@Nonnull HandlerRequest request,
@Nonnull ResourceManagerGateway gateway) throws RestHandlerException {
final ResourceID taskManagerResourceId = request.getPathParameter(TaskManagerIdPathParameter
.class);
CompletableFuture taskManagerInfoFuture = gateway.requestTaskManagerInfo(taskManagerResourceId, timeout);
metricFetcher.update();
return taskManagerInfoFuture.thenApply(
(TaskManagerInfo taskManagerInfo) -> {
final MetricStore.TaskManagerMetricStore tmMetrics =
metricStore.getTaskManagerMetricStore(taskManagerResourceId.getResourceIdString());
final TaskManagerMetricsInfo taskManagerMetricsInfo;
if (tmMetrics != null) {
log.debug("Create metrics info for TaskManager {}.", taskManagerResourceId);
taskManagerMetricsInfo = createTaskManagerMetricsInfo(tmMetrics);
} else {
log.debug("No metrics for TaskManager {}.", taskManagerResourceId);
taskManagerMetricsInfo = TaskManagerMetricsInfo.empty();
}
return new TaskManagerDetailsInfo(
taskManagerInfo,
taskManagerMetricsInfo);
})
.exceptionally(
(Throwable throwable) -> {
final Throwable strippedThrowable = ExceptionUtils.stripExecutionException(throwable);
if (strippedThrowable instanceof UnknownTaskExecutorException) {
throw new CompletionException(
new RestHandlerException(
"Could not find TaskExecutor " + taskManagerResourceId + '.',
HttpResponseStatus.NOT_FOUND,
strippedThrowable));
} else {
throw new CompletionException(strippedThrowable);
}
}
);
}
private static TaskManagerMetricsInfo createTaskManagerMetricsInfo(MetricStore.TaskManagerMetricStore tmMetrics) {
Preconditions.checkNotNull(tmMetrics);
long heapUsed = Long.valueOf(tmMetrics.getMetric("Status.JVM.Memory.Heap.Used", "0"));
long heapCommitted = Long.valueOf(tmMetrics.getMetric("Status.JVM.Memory.Heap.Committed", "0"));
long heapTotal = Long.valueOf(tmMetrics.getMetric("Status.JVM.Memory.Heap.Max", "0"));
long nonHeapUsed = Long.valueOf(tmMetrics.getMetric("Status.JVM.Memory.NonHeap.Used", "0"));
long nonHeapCommitted = Long.valueOf(tmMetrics.getMetric("Status.JVM.Memory.NonHeap.Committed", "0"));
long nonHeapTotal = Long.valueOf(tmMetrics.getMetric("Status.JVM.Memory.NonHeap.Max", "0"));
long directCount = Long.valueOf(tmMetrics.getMetric("Status.JVM.Memory.Direct.Count", "0"));
long directUsed = Long.valueOf(tmMetrics.getMetric("Status.JVM.Memory.Direct.MemoryUsed", "0"));
long directMax = Long.valueOf(tmMetrics.getMetric("Status.JVM.Memory.Direct.TotalCapacity", "0"));
long mappedCount = Long.valueOf(tmMetrics.getMetric("Status.JVM.Memory.Mapped.Count", "0"));
long mappedUsed = Long.valueOf(tmMetrics.getMetric("Status.JVM.Memory.Mapped.MemoryUsed", "0"));
long mappedMax = Long.valueOf(tmMetrics.getMetric("Status.JVM.Memory.Mapped.TotalCapacity", "0"));
long memorySegmentsAvailable = Long.valueOf(tmMetrics.getMetric("Status.Network.AvailableMemorySegments", "0"));
long memorySegmentsTotal = Long.valueOf(tmMetrics.getMetric("Status.Network.TotalMemorySegments", "0"));
final List garbageCollectorInfo = createGarbageCollectorInfo(tmMetrics);
return new TaskManagerMetricsInfo(
heapUsed,
heapCommitted,
heapTotal,
nonHeapUsed,
nonHeapCommitted,
nonHeapTotal,
directCount,
directUsed,
directMax,
mappedCount,
mappedUsed,
mappedMax,
memorySegmentsAvailable,
memorySegmentsTotal,
garbageCollectorInfo);
}
private static List createGarbageCollectorInfo(MetricStore.TaskManagerMetricStore taskManagerMetricStore) {
Preconditions.checkNotNull(taskManagerMetricStore);
ArrayList garbageCollectorInfos = new ArrayList<>(taskManagerMetricStore.garbageCollectorNames.size());
for (String garbageCollectorName: taskManagerMetricStore.garbageCollectorNames) {
final String count = taskManagerMetricStore.getMetric("Status.JVM.GarbageCollector." + garbageCollectorName + ".Count", null);
final String time = taskManagerMetricStore.getMetric("Status.JVM.GarbageCollector." + garbageCollectorName + ".Time", null);
if (count != null && time != null) {
garbageCollectorInfos.add(
new TaskManagerMetricsInfo.GarbageCollectorInfo(
garbageCollectorName,
Long.valueOf(count),
Long.valueOf(time)));
}
}
return garbageCollectorInfos;
}
}
