| /* |
| * 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.jmeter.visualizers.backend.graphite; |
| |
| import java.io.OutputStreamWriter; |
| import java.io.Writer; |
| import java.nio.ByteBuffer; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.commons.pool2.impl.GenericKeyedObjectPool; |
| import org.jetbrains.annotations.VisibleForTesting; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Pickle Graphite format Partly based on |
| * https://github.com/BrightcoveOS/metrics-graphite-pickle/blob/master/src/main/java/com/brightcove/metrics/reporting/GraphitePickleReporter.java |
| * as per license |
| * https://github.com/BrightcoveOS/metrics-graphite-pickle/blob/master/LICENSE.txt |
| * |
| * @since 2.13 |
| */ |
| class PickleGraphiteMetricsSender extends AbstractGraphiteMetricsSender { |
| private static final Logger log = LoggerFactory.getLogger(PickleGraphiteMetricsSender.class); |
| |
| /* Pickle opcodes needed for implementation */ |
| private static final char APPEND = 'a'; |
| private static final char LIST = 'l'; |
| private static final char LONG = 'L'; |
| private static final char MARK = '('; |
| private static final char STOP = '.'; |
| private static final char STRING = 'S'; |
| private static final char TUPLE = 't'; |
| private static final char QUOTE = '\''; |
| private static final char LF = '\n'; |
| |
| private final Object lock = new Object(); |
| |
| // graphite expects a python-pickled list of nested tuples. |
| private List<MetricTuple> metrics = new ArrayList<>(); |
| |
| private SocketConnectionInfos socketConnectionInfos; |
| private GenericKeyedObjectPool<? super SocketConnectionInfos, SocketOutputStream> socketOutputStreamPool; |
| private String prefix; |
| |
| PickleGraphiteMetricsSender() { |
| super(); |
| } |
| |
| /** |
| * @param graphiteHost Graphite Host |
| * @param graphitePort Graphite Port |
| * @param prefix Common Metrics prefix |
| */ |
| @Override |
| public void setup(String graphiteHost, int graphitePort, String prefix) { |
| this.prefix = prefix; |
| this.socketConnectionInfos = new SocketConnectionInfos(graphiteHost, graphitePort); |
| this.socketOutputStreamPool = createSocketOutputStreamPool(); |
| |
| log.info("Created PickleGraphiteMetricsSender with host: {}, port: {}, prefix: {}", |
| graphiteHost, graphitePort, prefix); |
| } |
| |
| /** Setup used for testing, or if explicit customisation is required. */ |
| public void setup(SocketConnectionInfos socketConnectionInfos, |
| GenericKeyedObjectPool<? super SocketConnectionInfos, SocketOutputStream> socketOutputStreamPool, |
| String prefix) { |
| this.socketConnectionInfos = socketConnectionInfos; |
| this.socketOutputStreamPool = socketOutputStreamPool; |
| this.prefix = prefix; |
| } |
| |
| @VisibleForTesting |
| List<MetricTuple> getMetrics() { |
| return metrics; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * org.apache.jmeter.visualizers.backend.graphite.GraphiteMetricsSender# |
| * addMetric(long, java.lang.String, java.lang.String, java.lang.String) |
| */ |
| @Override |
| public void addMetric(long timestamp, String contextName, String metricName, String metricValue) { |
| String name = prefix + contextName + "." + metricName; |
| synchronized (lock) { |
| metrics.add(new MetricTuple(name, timestamp, metricValue)); |
| } |
| } |
| |
| /* (non-Javadoc) |
| * @see org.apache.jmeter.visualizers.backend.graphite.GraphiteMetricsSender#writeAndSendMetrics() |
| */ |
| @Override |
| public void writeAndSendMetrics() { |
| final List<MetricTuple> currentMetrics; |
| synchronized (lock) { |
| if (metrics.isEmpty()) { |
| return; |
| } |
| // keep the current metrics to send outside sync block |
| currentMetrics = metrics; |
| metrics = new ArrayList<>(); |
| } |
| writeMetrics(currentMetrics); |
| } |
| |
| private void writeMetrics(List<MetricTuple> currentMetrics) { |
| SocketOutputStream out = null; |
| try { |
| String payload = convertMetricsToPickleFormat(currentMetrics); |
| |
| int length = payload.length(); |
| byte[] header = ByteBuffer.allocate(4).putInt(length).array(); |
| |
| out = socketOutputStreamPool.borrowObject(socketConnectionInfos); |
| out.write(header); |
| // pickleWriter is not closed as it would close the underlying pooled out |
| Writer pickleWriter = new OutputStreamWriter(out, CHARSET_NAME); |
| pickleWriter.write(payload); |
| pickleWriter.flush(); |
| socketOutputStreamPool.returnObject(socketConnectionInfos, out); |
| } catch (Exception e) { |
| // if there was an error, we might miss some data, for now, drop those and try to keep going. |
| if (out != null) { |
| try { |
| socketOutputStreamPool.invalidateObject(socketConnectionInfos, out); |
| } catch (Exception e1) { |
| log.warn("Exception invalidating socketOutputStream connected to graphite server {}:{}", |
| socketConnectionInfos.getHost(), socketConnectionInfos.getPort(), e1); |
| } |
| } |
| log.error("Error writing to Graphite: {}", e.getMessage(), e); |
| } |
| |
| if (log.isDebugEnabled()) { |
| log.debug("Wrote {} metrics", currentMetrics.size()); |
| } |
| } |
| |
| /* (non-Javadoc) |
| * @see org.apache.jmeter.visualizers.backend.graphite.GraphiteMetricsSender#destroy() |
| */ |
| @Override |
| public void destroy() { |
| socketOutputStreamPool.close(); |
| } |
| |
| /** See: https://graphite.readthedocs.io/en/1.0.0/feeding-carbon.html */ |
| @VisibleForTesting |
| static String convertMetricsToPickleFormat(List<MetricTuple> metrics) { |
| StringBuilder pickled = new StringBuilder(metrics.size() * 75); |
| pickled.append(MARK).append(LIST); |
| |
| for (MetricTuple tuple : metrics) { |
| pickled.append(MARK) // begin outer tuple |
| .append(STRING) // the metric name is a string |
| // the single quotes are to match python's repr("abcd") |
| .append(QUOTE).append(tuple.name).append(QUOTE) |
| .append(LF) |
| |
| // begin the inner tuple |
| .append(MARK) |
| // timestamp is a long |
| .append(LONG).append(tuple.timestamp) |
| // the trailing L is to match python's repr(long(1234)) |
| .append(LONG).append(LF) |
| // and the value is a string. |
| .append(STRING).append(QUOTE).append(tuple.value).append(QUOTE).append(LF) |
| .append(TUPLE) // end inner tuple |
| |
| .append(TUPLE) // end outer tuple |
| .append(APPEND); |
| } |
| |
| // every pickle ends with STOP |
| pickled.append(STOP); |
| return pickled.toString(); |
| } |
| } |