| /* |
| * 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.cassandra.metrics; |
| |
| import java.net.InetAddress; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.cassandra.config.DatabaseDescriptor; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.codahale.metrics.Timer; |
| |
| import static org.apache.cassandra.metrics.CassandraMetricsRegistry.Metrics; |
| |
| /** |
| * Metrics for messages |
| */ |
| public class MessagingMetrics |
| { |
| private static Logger logger = LoggerFactory.getLogger(MessagingMetrics.class); |
| private static final MetricNameFactory factory = new DefaultNameFactory("Messaging"); |
| public final Timer crossNodeLatency; |
| public final ConcurrentHashMap<String, Timer> dcLatency; |
| |
| public MessagingMetrics() |
| { |
| crossNodeLatency = Metrics.timer(factory.createMetricName("CrossNodeLatency")); |
| dcLatency = new ConcurrentHashMap<>(); |
| } |
| |
| public void addTimeTaken(InetAddress from, long timeTaken) |
| { |
| String dc = DatabaseDescriptor.getEndpointSnitch().getDatacenter(from); |
| Timer timer = dcLatency.get(dc); |
| if (timer == null) |
| { |
| timer = dcLatency.computeIfAbsent(dc, k -> Metrics.timer(factory.createMetricName(dc + "-Latency"))); |
| } |
| timer.update(timeTaken, TimeUnit.MILLISECONDS); |
| crossNodeLatency.update(timeTaken, TimeUnit.MILLISECONDS); |
| } |
| } |