| /* |
| * 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.omid.metrics; |
| |
| import com.codahale.metrics.ConsoleReporter; |
| import com.codahale.metrics.CsvReporter; |
| import com.codahale.metrics.MetricFilter; |
| import com.codahale.metrics.MetricRegistry; |
| import com.codahale.metrics.ScheduledReporter; |
| import com.codahale.metrics.Slf4jReporter; |
| import com.codahale.metrics.Timer.Context; |
| import com.codahale.metrics.graphite.Graphite; |
| import com.codahale.metrics.graphite.GraphiteReporter; |
| import org.apache.phoenix.thirdparty.com.google.common.base.Strings; |
| import org.apache.phoenix.thirdparty.com.google.common.net.HostAndPort; |
| import org.apache.commons.io.FileUtils; |
| import org.apache.omid.metrics.CodahaleMetricsConfig.Reporter; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.concurrent.TimeUnit; |
| |
| public class CodahaleMetricsProvider implements MetricsProvider, MetricsRegistry { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(CodahaleMetricsProvider.class); |
| |
| private MetricRegistry metrics = new MetricRegistry(); |
| private List<ScheduledReporter> reporters = new ArrayList<>(); |
| |
| private final int metricsOutputFrequencyInSecs; |
| |
| public CodahaleMetricsProvider(CodahaleMetricsConfig conf) throws IOException { |
| metricsOutputFrequencyInSecs = conf.getOutputFreqInSecs(); |
| int reporterCount = 0; |
| for (Reporter reporter : conf.getReporters()) { |
| ScheduledReporter codahaleReporter = null; |
| switch (reporter) { |
| case CONSOLE: |
| codahaleReporter = createAndGetConfiguredConsoleReporter(); |
| break; |
| case GRAPHITE: |
| codahaleReporter = createAndGetConfiguredGraphiteReporter(conf.getPrefix(), |
| conf.getGraphiteHostConfig()); |
| break; |
| case CSV: |
| codahaleReporter = createAndGetConfiguredCSVReporter(conf.getPrefix(), |
| conf.getCsvDir()); |
| break; |
| case SLF4J: |
| codahaleReporter = createAndGetConfiguredSlf4jReporter(conf.getSlf4jLogger()); |
| break; |
| } |
| if (codahaleReporter != null) { |
| reporters.add(codahaleReporter); |
| reporterCount++; |
| } |
| } |
| if (reporterCount == 0) { |
| LOG.warn("No metric reporters found, so metrics won't be available"); |
| } |
| startMetrics(); |
| } |
| |
| @Override |
| public void startMetrics() { |
| for (ScheduledReporter r : reporters) { |
| LOG.info("Starting metrics reporter {} reporting every {} Secs", |
| r.getClass().getCanonicalName(), metricsOutputFrequencyInSecs); |
| r.start(metricsOutputFrequencyInSecs, TimeUnit.SECONDS); |
| } |
| } |
| |
| @Override |
| public void stopMetrics() { |
| for (ScheduledReporter r : reporters) { |
| r.report(); |
| LOG.info("Stopping reporter {}", r.toString()); |
| r.stop(); |
| } |
| } |
| |
| @Override |
| public <T extends Number> void gauge(String name, Gauge<T> appGauge) { |
| metrics.register(name, new CodahaleGauge<>(appGauge)); |
| } |
| |
| @Override |
| public Counter counter(String name) { |
| com.codahale.metrics.Counter counter = metrics.counter(name); |
| return new CodahaleCounterWrapper(counter); |
| } |
| |
| |
| @Override |
| public Timer timer(String name) { |
| com.codahale.metrics.Timer timer = metrics.timer(name); |
| return new CodahaleTimerWrapper(timer); |
| } |
| |
| @Override |
| public Meter meter(String name) { |
| com.codahale.metrics.Meter meter = metrics.meter(name); |
| return new CodahaleMeterWrapper(meter); |
| } |
| |
| @Override |
| public Histogram histogram(String name) { |
| com.codahale.metrics.Histogram histogram = metrics.histogram(name); |
| return new CodahaleHistogramWrapper(histogram); |
| } |
| |
| private ScheduledReporter createAndGetConfiguredConsoleReporter() { |
| return ConsoleReporter.forRegistry(metrics) |
| .convertRatesTo(TimeUnit.SECONDS) |
| .convertDurationsTo(TimeUnit.MILLISECONDS) |
| .build(); |
| } |
| |
| private ScheduledReporter createAndGetConfiguredGraphiteReporter(String prefix, String graphiteHost) { |
| LOG.info("Configuring Graphite reporter. Sendig data to host:port {}", graphiteHost); |
| HostAndPort addr = HostAndPort.fromString(graphiteHost); |
| |
| final Graphite graphite = new Graphite( |
| new InetSocketAddress(addr.getHost(), addr.getPort())); |
| |
| return GraphiteReporter.forRegistry(metrics) |
| .prefixedWith(prefix) |
| .convertRatesTo(TimeUnit.SECONDS) |
| .convertDurationsTo(TimeUnit.MILLISECONDS) |
| .filter(MetricFilter.ALL) |
| .build(graphite); |
| } |
| |
| private ScheduledReporter createAndGetConfiguredCSVReporter(String prefix, String csvDir) throws IOException { |
| // NOTE: |
| // 1) metrics output files are exclusive to a given process |
| // 2) the output directory must exist |
| // 3) if output files already exist they are not overwritten and there is no metrics output |
| File outputDir; |
| if (Strings.isNullOrEmpty(prefix)) { |
| outputDir = new File(csvDir, prefix); |
| } else { |
| outputDir = new File(csvDir); |
| } |
| FileUtils.forceMkdir(outputDir); |
| LOG.info("Configuring stats with csv output to directory [{}]", outputDir.getAbsolutePath()); |
| return CsvReporter.forRegistry(metrics) |
| .convertRatesTo(TimeUnit.SECONDS) |
| .convertDurationsTo(TimeUnit.MILLISECONDS) |
| .build(outputDir); |
| } |
| |
| |
| private ScheduledReporter createAndGetConfiguredSlf4jReporter(String slf4jLogger) { |
| LOG.info("Configuring stats with SLF4J with logger {}", slf4jLogger); |
| return Slf4jReporter.forRegistry(metrics) |
| .outputTo(LoggerFactory.getLogger(slf4jLogger)) |
| .convertRatesTo(TimeUnit.SECONDS) |
| .convertDurationsTo(TimeUnit.MILLISECONDS) |
| .build(); |
| } |
| |
| /** |
| * Metrics wrapper implementations |
| */ |
| |
| private static class CodahaleGauge<T extends Number> implements com.codahale.metrics.Gauge<T> { |
| |
| private final Gauge<T> omidGauge; |
| |
| CodahaleGauge(Gauge<T> omidGauge) { |
| this.omidGauge = omidGauge; |
| } |
| |
| @Override |
| public T getValue() { |
| return omidGauge.getValue(); |
| } |
| |
| } |
| |
| private static class CodahaleCounterWrapper implements Counter { |
| |
| private final com.codahale.metrics.Counter counter; |
| |
| CodahaleCounterWrapper(com.codahale.metrics.Counter counter) { |
| this.counter = counter; |
| } |
| |
| @Override |
| public void inc() { |
| counter.inc(); |
| } |
| |
| @Override |
| public void inc(long n) { |
| counter.inc(n); |
| } |
| |
| @Override |
| public void dec() { |
| counter.dec(); |
| } |
| |
| @Override |
| public void dec(long n) { |
| counter.dec(n); |
| } |
| |
| } |
| |
| private static class CodahaleTimerWrapper implements Timer { |
| |
| private final com.codahale.metrics.Timer timer; |
| |
| private Context context; |
| |
| CodahaleTimerWrapper(com.codahale.metrics.Timer timer) { |
| this.timer = timer; |
| } |
| |
| @Override |
| public void start() { |
| context = timer.time(); |
| } |
| |
| @Override |
| public void stop() { |
| context.stop(); |
| } |
| |
| @Override |
| public void update(long durationInNs) { |
| timer.update(durationInNs, TimeUnit.NANOSECONDS); |
| } |
| |
| } |
| |
| private static class CodahaleMeterWrapper implements Meter { |
| |
| private com.codahale.metrics.Meter meter; |
| |
| CodahaleMeterWrapper(com.codahale.metrics.Meter meter) { |
| this.meter = meter; |
| } |
| |
| @Override |
| public void mark() { |
| meter.mark(); |
| } |
| |
| @Override |
| public void mark(long n) { |
| meter.mark(n); |
| } |
| |
| } |
| |
| private static class CodahaleHistogramWrapper implements Histogram { |
| |
| private com.codahale.metrics.Histogram histogram; |
| |
| CodahaleHistogramWrapper(com.codahale.metrics.Histogram histogram) { |
| this.histogram = histogram; |
| } |
| |
| @Override |
| public void update(int value) { |
| histogram.update(value); |
| } |
| |
| @Override |
| public void update(long value) { |
| histogram.update(value); |
| } |
| |
| } |
| |
| } |