| /** |
| * 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.pulsar.testclient; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import com.beust.jcommander.ParameterException; |
| import org.apache.pulsar.broker.TimeAverageBrokerData; |
| import org.apache.pulsar.broker.loadbalance.impl.ModularLoadManagerImpl; |
| import org.apache.pulsar.policies.data.loadbalancer.LoadReport; |
| import org.apache.pulsar.policies.data.loadbalancer.LocalBrokerData; |
| import org.apache.pulsar.policies.data.loadbalancer.ResourceUsage; |
| import org.apache.pulsar.policies.data.loadbalancer.SystemResourceUsage; |
| import org.apache.pulsar.testclient.utils.FixedColumnLengthTableMaker; |
| import org.apache.zookeeper.WatchedEvent; |
| import org.apache.zookeeper.Watcher; |
| import org.apache.zookeeper.ZooKeeper; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.beust.jcommander.JCommander; |
| import com.beust.jcommander.Parameter; |
| import com.google.gson.Gson; |
| |
| /** |
| * Monitors brokers and prints to the console information about their system resource usages, their topic and bundle |
| * counts, their message rates, and other metrics. |
| */ |
| public class BrokerMonitor { |
| private static final Logger log = LoggerFactory.getLogger(BrokerMonitor.class); |
| |
| private static final String BROKER_ROOT = "/loadbalance/brokers"; |
| private static final int ZOOKEEPER_TIMEOUT_MILLIS = 30000; |
| private static final int GLOBAL_STATS_PRINT_PERIOD_MILLIS = 60000; |
| private final ZooKeeper zkClient; |
| private static final Gson gson = new Gson(); |
| |
| // Fields common for message rows. |
| private static final List<Object> MESSAGE_FIELDS = Arrays.asList("MSG/S IN", "MSG/S OUT", "TOTAL", "KB/S IN", |
| "KB/S OUT", "TOTAL"); |
| |
| // Fields common for system rows. |
| private static final List<Object> SYSTEM_FIELDS = Arrays.asList("CPU %", "MEMORY %", "DIRECT %", "BW IN %", |
| "BW OUT %", "MAX %"); |
| |
| private static final Object[] SYSTEM_ROW = makeSystemRow("SYSTEM"); |
| private static final Object[] COUNT_ROW = { "COUNT", "TOPIC", "BUNDLE", "PRODUCER", "CONSUMER", "BUNDLE +", |
| "BUNDLE -" }; |
| private static final Object[] LATEST_ROW = makeMessageRow("LATEST"); |
| private static final Object[] SHORT_ROW = makeMessageRow("SHORT"); |
| private static final Object[] LONG_ROW = makeMessageRow("LONG"); |
| private static final Object[] RAW_SYSTEM_ROW = makeSystemRow("RAW SYSTEM"); |
| private static final Object[] ALLOC_SYSTEM_ROW = makeSystemRow("ALLOC SYSTEM"); |
| private static final Object[] RAW_MESSAGE_ROW = makeMessageRow("RAW MSG"); |
| private static final Object[] ALLOC_MESSAGE_ROW = makeMessageRow("ALLOC MSG"); |
| private static final Object[] GLOBAL_HEADER = { "BROKER", "BUNDLE", "MSG/S", "LONG/S", "KB/S", "MAX %" }; |
| |
| private final Map<String, Object> loadData; |
| |
| private static final FixedColumnLengthTableMaker localTableMaker = new FixedColumnLengthTableMaker(); |
| static { |
| // Makes the table length about 120. |
| localTableMaker.elementLength = 14; |
| localTableMaker.decimalFormatter = "%.2f"; |
| } |
| |
| private static final FixedColumnLengthTableMaker globalTableMaker = new FixedColumnLengthTableMaker(); |
| static { |
| globalTableMaker.decimalFormatter = "%.2f"; |
| globalTableMaker.topBorder = '*'; |
| globalTableMaker.bottomBorder = '*'; |
| // Make broker column substantially longer than other columns. |
| globalTableMaker.lengthFunction = column -> column == 0 ? 60 : 12; |
| } |
| |
| // Take advantage of repeated labels in message rows. |
| private static Object[] makeMessageRow(final String firstElement) { |
| final List<Object> result = new ArrayList<>(); |
| result.add(firstElement); |
| result.addAll(MESSAGE_FIELDS); |
| return result.toArray(); |
| } |
| |
| // Take advantage of repeated labels in system rows. |
| private static Object[] makeSystemRow(final String firstElement) { |
| final List<Object> result = new ArrayList<>(); |
| result.add(firstElement); |
| result.addAll(SYSTEM_FIELDS); |
| return result.toArray(); |
| } |
| |
| // Helper method to initialize rows. |
| private static void initRow(final Object[] row, final Object... elements) { |
| System.arraycopy(elements, 0, row, 1, elements.length); |
| } |
| |
| // Helper method to initialize rows which hold message data. |
| private static void initMessageRow(final Object[] row, final double messageRateIn, final double messageRateOut, |
| final double messageThroughputIn, final double messageThroughputOut) { |
| initRow(row, messageRateIn, messageRateOut, messageRateIn + messageRateOut, messageThroughputIn / 1024, |
| messageThroughputOut / 1024, (messageThroughputIn + messageThroughputOut) / 1024); |
| } |
| |
| // Prints out the global load data. |
| private void printGlobalData() { |
| synchronized (loadData) { |
| // 1 header row, 1 total row, and loadData.size() rows for brokers. |
| Object[][] rows = new Object[loadData.size() + 2][]; |
| rows[0] = GLOBAL_HEADER; |
| int totalBundles = 0; |
| double totalThroughput = 0; |
| double totalMessageRate = 0; |
| double totalLongTermMessageRate = 0; |
| double maxMaxUsage = 0; |
| int i = 1; |
| for (final Map.Entry<String, Object> entry : loadData.entrySet()) { |
| final String broker = entry.getKey(); |
| final Object data = entry.getValue(); |
| rows[i] = new Object[GLOBAL_HEADER.length]; |
| rows[i][0] = broker; |
| int numBundles; |
| double messageRate; |
| double longTermMessageRate; |
| double messageThroughput; |
| double maxUsage; |
| if (data instanceof LoadReport) { |
| final LoadReport loadReport = (LoadReport) data; |
| numBundles = loadReport.getNumBundles(); |
| messageRate = loadReport.getMsgRateIn() + loadReport.getMsgRateOut(); |
| longTermMessageRate = loadReport.getAllocatedMsgRateIn() + loadReport.getAllocatedMsgRateOut(); |
| messageThroughput = (loadReport.getAllocatedBandwidthIn() + loadReport.getAllocatedBandwidthOut()) |
| / 1024; |
| final SystemResourceUsage systemResourceUsage = loadReport.getSystemResourceUsage(); |
| maxUsage = Math.max( |
| Math.max( |
| Math.max(systemResourceUsage.getCpu().percentUsage(), |
| systemResourceUsage.getMemory().percentUsage()), |
| Math.max(systemResourceUsage.getDirectMemory().percentUsage(), |
| systemResourceUsage.getBandwidthIn().percentUsage())), |
| systemResourceUsage.getBandwidthOut().percentUsage()); |
| } else if (data instanceof LocalBrokerData) { |
| final LocalBrokerData localData = (LocalBrokerData) data; |
| numBundles = localData.getNumBundles(); |
| messageRate = localData.getMsgRateIn() + localData.getMsgRateOut(); |
| final String timeAveragePath = ModularLoadManagerImpl.TIME_AVERAGE_BROKER_ZPATH + "/" + broker; |
| try { |
| final TimeAverageBrokerData timeAverageData = gson.fromJson( |
| new String(zkClient.getData(timeAveragePath, false, null)), TimeAverageBrokerData.class); |
| longTermMessageRate = timeAverageData.getLongTermMsgRateIn() + timeAverageData.getLongTermMsgRateOut(); |
| } catch ( Exception x ) { |
| throw new RuntimeException(x); |
| } |
| messageThroughput = (localData.getMsgThroughputIn() + localData.getMsgThroughputOut()) / 1024; |
| maxUsage = localData.getMaxResourceUsage(); |
| } else { |
| throw new AssertionError("Unreachable code"); |
| } |
| |
| rows[i][1] = numBundles; |
| rows[i][2] = messageRate; |
| rows[i][3] = messageThroughput; |
| rows[i][4] = longTermMessageRate; |
| rows[i][5] = maxUsage; |
| |
| totalBundles += numBundles; |
| totalMessageRate += messageRate; |
| totalLongTermMessageRate += longTermMessageRate; |
| totalThroughput += messageThroughput; |
| maxMaxUsage = Math.max(maxUsage, maxMaxUsage); |
| ++i; |
| } |
| final int finalRow = loadData.size() + 1; |
| rows[finalRow] = new Object[GLOBAL_HEADER.length]; |
| rows[finalRow][0] = "TOTAL"; |
| rows[finalRow][1] = totalBundles; |
| rows[finalRow][2] = totalMessageRate; |
| rows[finalRow][3] = totalLongTermMessageRate; |
| rows[finalRow][4] = totalThroughput; |
| rows[finalRow][5] = maxMaxUsage; |
| final String table = globalTableMaker.make(rows); |
| log.info("Overall Broker Data:\n{}", table); |
| } |
| } |
| |
| // This watcher initializes data watchers whenever a new broker is found. |
| private class BrokerWatcher implements Watcher { |
| private final ZooKeeper zkClient; |
| private Set<String> brokers; |
| |
| private BrokerWatcher(final ZooKeeper zkClient) { |
| this.zkClient = zkClient; |
| this.brokers = Collections.emptySet(); |
| } |
| |
| /** |
| * Creates a watch for a newly acquired broker so that its data is printed whenever it is updated. |
| * |
| * @param event |
| * The watched event. |
| */ |
| public synchronized void process(final WatchedEvent event) { |
| try { |
| if (event.getType() == Event.EventType.NodeChildrenChanged) { |
| updateBrokers(event.getPath()); |
| } |
| } catch (Exception ex) { |
| throw new RuntimeException(ex); |
| } |
| } |
| |
| // Inform the user of any broker gains and losses and put watches on newly acquired brokers. |
| private synchronized void updateBrokers(final String path) { |
| final Set<String> newBrokers = new HashSet<>(); |
| try { |
| newBrokers.addAll(zkClient.getChildren(path, this)); |
| } catch (Exception ex) { |
| throw new RuntimeException(ex); |
| } |
| for (String oldBroker : brokers) { |
| if (!newBrokers.contains(oldBroker)) { |
| log.info("Lost broker: " + oldBroker); |
| synchronized (loadData) { |
| // Stop including lost broker in global stats. |
| loadData.remove(oldBroker); |
| } |
| } |
| } |
| for (String newBroker : newBrokers) { |
| if (!brokers.contains(newBroker)) { |
| log.info("Gained broker: " + newBroker); |
| final BrokerDataWatcher brokerDataWatcher = new BrokerDataWatcher(zkClient); |
| brokerDataWatcher.printData(path + "/" + newBroker); |
| } |
| } |
| this.brokers = newBrokers; |
| } |
| } |
| |
| // This watcher prints tabular data for a broker after its ZNode is updated. |
| private class BrokerDataWatcher implements Watcher { |
| private final ZooKeeper zkClient; |
| |
| private BrokerDataWatcher(final ZooKeeper zkClient) { |
| this.zkClient = zkClient; |
| } |
| |
| // Given the path to a broker ZNode, return the broker host name. |
| private String brokerNameFromPath(final String path) { |
| return path.substring(path.lastIndexOf('/') + 1); |
| } |
| |
| /** |
| * Print the local and historical broker data in a tabular format, and put this back as a watcher. |
| * |
| * @param event |
| * The watched event. |
| */ |
| public synchronized void process(final WatchedEvent event) { |
| try { |
| if (event.getType() == Event.EventType.NodeDataChanged) { |
| printData(event.getPath()); |
| } |
| } catch (Exception ex) { |
| throw new RuntimeException(ex); |
| } |
| } |
| |
| private double percentUsage(final double usage, final double limit) { |
| return limit > 0 && usage >= 0 ? 100 * Math.min(1, usage / limit) : 0; |
| } |
| |
| // Decide whether this broker is running SimpleLoadManagerImpl or ModularLoadManagerImpl and then print the data |
| // accordingly. |
| private synchronized void printData(final String path) { |
| final String broker = brokerNameFromPath(path); |
| String jsonString; |
| try { |
| jsonString = new String(zkClient.getData(path, this, null)); |
| } catch (Exception ex) { |
| throw new RuntimeException(ex); |
| } |
| // Use presence of the String "allocated" to determine if this is using SimpleLoadManagerImpl. |
| if (jsonString.contains("allocated")) { |
| printLoadReport(broker, gson.fromJson(jsonString, LoadReport.class)); |
| } else { |
| final LocalBrokerData localBrokerData = gson.fromJson(jsonString, LocalBrokerData.class); |
| final String timeAveragePath = ModularLoadManagerImpl.TIME_AVERAGE_BROKER_ZPATH + "/" + broker; |
| try { |
| final TimeAverageBrokerData timeAverageData = gson.fromJson( |
| new String(zkClient.getData(timeAveragePath, false, null)), TimeAverageBrokerData.class); |
| printBrokerData(broker, localBrokerData, timeAverageData); |
| } catch (Exception e) { |
| throw new RuntimeException(e); |
| } |
| } |
| } |
| |
| // Print the load report in a tabular form for a broker running SimpleLoadManagerImpl. |
| private synchronized void printLoadReport(final String broker, final LoadReport loadReport) { |
| loadData.put(broker, loadReport); |
| |
| // Initialize the constant rows. |
| final Object[][] rows = new Object[10][]; |
| |
| rows[0] = COUNT_ROW; |
| rows[2] = RAW_SYSTEM_ROW; |
| rows[4] = ALLOC_SYSTEM_ROW; |
| rows[6] = RAW_MESSAGE_ROW; |
| rows[8] = ALLOC_MESSAGE_ROW; |
| |
| // First column is a label, so start at the second column at index 1. |
| // Client count row. |
| rows[1] = new Object[COUNT_ROW.length]; |
| initRow(rows[1], loadReport.getNumTopics(), loadReport.getNumBundles(), loadReport.getNumProducers(), |
| loadReport.getNumConsumers(), loadReport.getBundleGains().size(), |
| loadReport.getBundleLosses().size()); |
| |
| // Raw system row. |
| final SystemResourceUsage systemResourceUsage = loadReport.getSystemResourceUsage(); |
| final ResourceUsage cpu = systemResourceUsage.getCpu(); |
| final ResourceUsage memory = systemResourceUsage.getMemory(); |
| final ResourceUsage directMemory = systemResourceUsage.getDirectMemory(); |
| final ResourceUsage bandwidthIn = systemResourceUsage.getBandwidthIn(); |
| final ResourceUsage bandwidthOut = systemResourceUsage.getBandwidthOut(); |
| final double maxUsage = Math.max( |
| Math.max(Math.max(cpu.percentUsage(), memory.percentUsage()), |
| Math.max(directMemory.percentUsage(), bandwidthIn.percentUsage())), |
| bandwidthOut.percentUsage()); |
| rows[3] = new Object[RAW_SYSTEM_ROW.length]; |
| initRow(rows[3], cpu.percentUsage(), memory.percentUsage(), directMemory.percentUsage(), |
| bandwidthIn.percentUsage(), bandwidthOut.percentUsage(), maxUsage); |
| |
| // Allocated system row. |
| rows[5] = new Object[ALLOC_SYSTEM_ROW.length]; |
| final double allocatedCpuUsage = percentUsage(loadReport.getAllocatedCPU(), cpu.limit); |
| final double allocatedMemoryUsage = percentUsage(loadReport.getAllocatedMemory(), memory.limit); |
| final double allocatedBandwidthInUsage = percentUsage(loadReport.getAllocatedBandwidthIn(), |
| bandwidthIn.limit); |
| final double allocatedBandwidthOutUsage = percentUsage(loadReport.getAllocatedBandwidthOut(), |
| bandwidthOut.limit); |
| final double maxAllocatedUsage = Math.max( |
| Math.max(Math.max(allocatedCpuUsage, allocatedMemoryUsage), allocatedBandwidthInUsage), |
| allocatedBandwidthOutUsage); |
| initRow(rows[5], allocatedCpuUsage, allocatedMemoryUsage, null, allocatedBandwidthInUsage, |
| allocatedBandwidthOutUsage, maxAllocatedUsage); |
| |
| // Raw message row. |
| rows[7] = new Object[RAW_MESSAGE_ROW.length]; |
| initMessageRow(rows[7], loadReport.getMsgRateIn(), loadReport.getMsgRateOut(), bandwidthIn.usage, |
| bandwidthOut.usage); |
| |
| // Allocated message row. |
| rows[9] = new Object[ALLOC_MESSAGE_ROW.length]; |
| initMessageRow(rows[9], loadReport.getAllocatedMsgRateIn(), loadReport.getAllocatedMsgRateOut(), |
| loadReport.getAllocatedBandwidthIn(), loadReport.getAllocatedBandwidthOut()); |
| |
| final String table = localTableMaker.make(rows); |
| log.info("\nLoad Report for {}:\n{}\n", broker, table); |
| } |
| |
| // Print the broker data in a tabular form for a broker using ModularLoadManagerImpl. |
| private synchronized void printBrokerData(final String broker, final LocalBrokerData localBrokerData, |
| final TimeAverageBrokerData timeAverageData) { |
| loadData.put(broker, localBrokerData); |
| |
| // Initialize the constant rows. |
| final Object[][] rows = new Object[10][]; |
| rows[0] = SYSTEM_ROW; |
| rows[2] = COUNT_ROW; |
| rows[4] = LATEST_ROW; |
| rows[6] = SHORT_ROW; |
| rows[8] = LONG_ROW; |
| |
| // First column is a label, so start at the second column at index 1. |
| // System row. |
| rows[1] = new Object[SYSTEM_ROW.length]; |
| initRow(rows[1], localBrokerData.getCpu().percentUsage(), localBrokerData.getMemory().percentUsage(), |
| localBrokerData.getDirectMemory().percentUsage(), localBrokerData.getBandwidthIn().percentUsage(), |
| localBrokerData.getBandwidthOut().percentUsage(), localBrokerData.getMaxResourceUsage() * 100); |
| |
| // Count row. |
| rows[3] = new Object[COUNT_ROW.length]; |
| initRow(rows[3], localBrokerData.getNumTopics(), localBrokerData.getNumBundles(), |
| localBrokerData.getNumProducers(), localBrokerData.getNumConsumers(), |
| localBrokerData.getLastBundleGains().size(), localBrokerData.getLastBundleLosses().size()); |
| |
| // Latest message data row. |
| rows[5] = new Object[LATEST_ROW.length]; |
| initMessageRow(rows[5], localBrokerData.getMsgRateIn(), localBrokerData.getMsgRateOut(), |
| localBrokerData.getMsgThroughputIn(), localBrokerData.getMsgThroughputOut()); |
| |
| // Short-term message data row. |
| rows[7] = new Object[SHORT_ROW.length]; |
| initMessageRow(rows[7], timeAverageData.getShortTermMsgRateIn(), timeAverageData.getShortTermMsgRateOut(), |
| timeAverageData.getShortTermMsgThroughputIn(), timeAverageData.getShortTermMsgThroughputOut()); |
| |
| // Long-term message data row. |
| rows[9] = new Object[LONG_ROW.length]; |
| initMessageRow(rows[9], timeAverageData.getLongTermMsgRateIn(), timeAverageData.getLongTermMsgRateOut(), |
| timeAverageData.getLongTermMsgThroughputIn(), timeAverageData.getLongTermMsgThroughputOut()); |
| |
| final String table = localTableMaker.make(rows); |
| log.info("\nBroker Data for {}:\n{}\n", broker, table); |
| } |
| } |
| |
| // JCommander arguments class. |
| private static class Arguments { |
| @Parameter(names = { "-h", "--help" }, description = "Help message", help = true) |
| boolean help; |
| |
| @Parameter(names = { "--connect-string" }, description = "Zookeeper connect string", required = true) |
| public String connectString = null; |
| } |
| |
| /** |
| * Create a broker monitor from the given ZooKeeper client. |
| * |
| * @param zkClient |
| * Client to create this from. |
| */ |
| public BrokerMonitor(final ZooKeeper zkClient) { |
| loadData = new ConcurrentHashMap<>(); |
| this.zkClient = zkClient; |
| } |
| |
| /** |
| * Start the broker monitoring procedure. |
| */ |
| public void start() { |
| try { |
| final BrokerWatcher brokerWatcher = new BrokerWatcher(zkClient); |
| brokerWatcher.updateBrokers(BROKER_ROOT); |
| while (true) { |
| Thread.sleep(GLOBAL_STATS_PRINT_PERIOD_MILLIS); |
| printGlobalData(); |
| } |
| } catch (Exception ex) { |
| throw new RuntimeException(ex); |
| } |
| } |
| |
| /** |
| * Run a monitor from command line arguments. |
| * |
| * @param args |
| * Arguments for the monitor. |
| */ |
| public static void main(String[] args) throws Exception { |
| final Arguments arguments = new Arguments(); |
| final JCommander jc = new JCommander(arguments); |
| jc.setProgramName("pulsar-perf monitor-brokers"); |
| |
| try { |
| jc.parse(args); |
| } catch (ParameterException e) { |
| System.out.println(e.getMessage()); |
| jc.usage(); |
| PerfClientUtils.exit(-1); |
| } |
| final ZooKeeper zkClient = new ZooKeeper(arguments.connectString, ZOOKEEPER_TIMEOUT_MILLIS, null); |
| final BrokerMonitor monitor = new BrokerMonitor(zkClient); |
| monitor.start(); |
| } |
| } |