/** * 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.phoenix.metrics; import org.apache.commons.configuration2.SubsetConfiguration; import org.apache.hadoop.metrics2.AbstractMetric; import org.apache.hadoop.metrics2.MetricsRecord; import org.apache.hadoop.metrics2.MetricsSink; import org.apache.phoenix.trace.TracingUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * Simple sink that just logs the output of all the metrics that start with * {@link org.apache.phoenix.trace.TracingUtils#METRIC_SOURCE_KEY} */ public class LoggingSink implements MetricsSink { private static final Logger LOGGER = LoggerFactory.getLogger(LoggingSink.class); @Override public void init(SubsetConfiguration config) { } @Override public void putMetrics(MetricsRecord record) { // we could wait until flush, but this is a really lightweight process, so we just write // them // as soon as we get them if (!LOGGER.isDebugEnabled()) { return; } LOGGER.debug("Found record:" + record.name()); for (AbstractMetric metric : record.metrics()) { // just print the metric we care about if (metric.name().startsWith(TracingUtils.METRIC_SOURCE_KEY)) { LOGGER.debug("\t metric:" + metric); } } } @Override public void flush() { } }