| /* |
| * 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.state.metrics; |
| |
| import org.apache.flink.annotation.VisibleForTesting; |
| import org.apache.flink.api.common.typeutils.TypeSerializer; |
| import org.apache.flink.runtime.state.internal.InternalKvState; |
| import org.apache.flink.util.function.SupplierWithException; |
| import org.apache.flink.util.function.ThrowingRunnable; |
| |
| import java.io.IOException; |
| import java.util.function.Supplier; |
| |
| /** |
| * Abstract implementation of latency tracking state. |
| * |
| * @param <K> The type of key the state is associated to |
| * @param <N> The type of the namespace |
| * @param <V> Type of the user entry value of state |
| * @param <S> Type of the internal kv state |
| * @param <LSM> Type of the latency tracking state metrics |
| */ |
| class AbstractLatencyTrackState< |
| K, N, V, S extends InternalKvState<K, N, V>, LSM extends StateLatencyMetricBase> |
| implements InternalKvState<K, N, V> { |
| |
| protected S original; |
| protected LSM latencyTrackingStateMetric; |
| |
| AbstractLatencyTrackState(S original, LSM latencyTrackingStateMetric) { |
| this.original = original; |
| this.latencyTrackingStateMetric = latencyTrackingStateMetric; |
| } |
| |
| @Override |
| public TypeSerializer<K> getKeySerializer() { |
| return original.getKeySerializer(); |
| } |
| |
| @Override |
| public TypeSerializer<N> getNamespaceSerializer() { |
| return original.getNamespaceSerializer(); |
| } |
| |
| @Override |
| public TypeSerializer<V> getValueSerializer() { |
| return original.getValueSerializer(); |
| } |
| |
| @Override |
| public void setCurrentNamespace(N namespace) { |
| original.setCurrentNamespace(namespace); |
| } |
| |
| @Override |
| public byte[] getSerializedValue( |
| byte[] serializedKeyAndNamespace, |
| TypeSerializer<K> safeKeySerializer, |
| TypeSerializer<N> safeNamespaceSerializer, |
| TypeSerializer<V> safeValueSerializer) |
| throws Exception { |
| return original.getSerializedValue( |
| serializedKeyAndNamespace, |
| safeKeySerializer, |
| safeNamespaceSerializer, |
| safeValueSerializer); |
| } |
| |
| @Override |
| public StateIncrementalVisitor<K, N, V> getStateIncrementalVisitor( |
| int recommendedMaxNumberOfReturnedRecords) { |
| return original.getStateIncrementalVisitor(recommendedMaxNumberOfReturnedRecords); |
| } |
| |
| @Override |
| public void clear() { |
| if (latencyTrackingStateMetric.trackLatencyOnClear()) { |
| trackLatency(original::clear, StateLatencyMetricBase.STATE_CLEAR_LATENCY); |
| } else { |
| original.clear(); |
| } |
| } |
| |
| protected <T> T trackLatency(Supplier<T> supplier, String latencyLabel) { |
| long startTime = System.nanoTime(); |
| T result = supplier.get(); |
| long latency = System.nanoTime() - startTime; |
| latencyTrackingStateMetric.updateLatency(latencyLabel, latency); |
| return result; |
| } |
| |
| protected <T> T trackLatencyWithIOException( |
| SupplierWithException<T, IOException> supplier, String latencyLabel) |
| throws IOException { |
| long startTime = System.nanoTime(); |
| T result = supplier.get(); |
| long latency = System.nanoTime() - startTime; |
| latencyTrackingStateMetric.updateLatency(latencyLabel, latency); |
| return result; |
| } |
| |
| protected void trackLatencyWithIOException( |
| ThrowingRunnable<IOException> runnable, String latencyLabel) throws IOException { |
| long startTime = System.nanoTime(); |
| runnable.run(); |
| long latency = System.nanoTime() - startTime; |
| latencyTrackingStateMetric.updateLatency(latencyLabel, latency); |
| } |
| |
| protected <T> T trackLatencyWithException( |
| SupplierWithException<T, Exception> supplier, String latencyLabel) throws Exception { |
| long startTime = System.nanoTime(); |
| T result = supplier.get(); |
| long latency = System.nanoTime() - startTime; |
| latencyTrackingStateMetric.updateLatency(latencyLabel, latency); |
| return result; |
| } |
| |
| protected void trackLatencyWithException( |
| ThrowingRunnable<Exception> runnable, String latencyLabel) throws Exception { |
| long startTime = System.nanoTime(); |
| runnable.run(); |
| long latency = System.nanoTime() - startTime; |
| latencyTrackingStateMetric.updateLatency(latencyLabel, latency); |
| } |
| |
| protected void trackLatency(Runnable runnable, String latencyLabel) { |
| long startTime = System.nanoTime(); |
| runnable.run(); |
| long latency = System.nanoTime() - startTime; |
| latencyTrackingStateMetric.updateLatency(latencyLabel, latency); |
| } |
| |
| @VisibleForTesting |
| LSM getLatencyTrackingStateMetric() { |
| return latencyTrackingStateMetric; |
| } |
| } |