| /** |
| * 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 com.twitter.distributedlog.client.stats; |
| |
| import com.twitter.distributedlog.thrift.service.StatusCode; |
| import com.twitter.finagle.stats.Counter; |
| import com.twitter.finagle.stats.Stat; |
| import com.twitter.finagle.stats.StatsReceiver; |
| |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.ConcurrentMap; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| */ |
| public class ClientStatsLogger { |
| |
| // Stats |
| private final StatsReceiver statsReceiver; |
| private final StatsReceiver responseStatsReceiver; |
| private final ConcurrentMap<StatusCode, Counter> responseStats = |
| new ConcurrentHashMap<StatusCode, Counter>(); |
| private final StatsReceiver exceptionStatsReceiver; |
| private final ConcurrentMap<Class<?>, Counter> exceptionStats = |
| new ConcurrentHashMap<Class<?>, Counter>(); |
| |
| private final Stat proxySuccessLatencyStat; |
| private final Stat proxyFailureLatencyStat; |
| |
| public ClientStatsLogger(StatsReceiver statsReceiver) { |
| this.statsReceiver = statsReceiver; |
| responseStatsReceiver = statsReceiver.scope("responses"); |
| exceptionStatsReceiver = statsReceiver.scope("exceptions"); |
| StatsReceiver proxyLatencyStatReceiver = statsReceiver.scope("proxy_request_latency"); |
| proxySuccessLatencyStat = proxyLatencyStatReceiver.stat0("success"); |
| proxyFailureLatencyStat = proxyLatencyStatReceiver.stat0("failure"); |
| } |
| |
| public StatsReceiver getStatsReceiver() { |
| return statsReceiver; |
| } |
| |
| private Counter getResponseCounter(StatusCode code) { |
| Counter counter = responseStats.get(code); |
| if (null == counter) { |
| Counter newCounter = responseStatsReceiver.counter0(code.name()); |
| Counter oldCounter = responseStats.putIfAbsent(code, newCounter); |
| counter = null != oldCounter ? oldCounter : newCounter; |
| } |
| return counter; |
| } |
| |
| private Counter getExceptionCounter(Class<?> cls) { |
| Counter counter = exceptionStats.get(cls); |
| if (null == counter) { |
| Counter newCounter = exceptionStatsReceiver.counter0(cls.getName()); |
| Counter oldCounter = exceptionStats.putIfAbsent(cls, newCounter); |
| counter = null != oldCounter ? oldCounter : newCounter; |
| } |
| return counter; |
| } |
| |
| public void completeProxyRequest(StatusCode code, long startTimeNanos) { |
| getResponseCounter(code).incr(); |
| proxySuccessLatencyStat.add(elapsedMicroSec(startTimeNanos)); |
| } |
| |
| public void failProxyRequest(Throwable cause, long startTimeNanos) { |
| getExceptionCounter(cause.getClass()).incr(); |
| proxyFailureLatencyStat.add(elapsedMicroSec(startTimeNanos)); |
| } |
| |
| static long elapsedMicroSec(long startNanoTime) { |
| return TimeUnit.NANOSECONDS.toMicros(System.nanoTime() - startNanoTime); |
| } |
| } |