package org.apache.cassandra.tools;
/*
*
* 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.
*
*/
import java.io.IOException;
import java.io.PrintStream;
import java.lang.management.MemoryUsage;
import java.net.InetAddress;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.Map.Entry;
import java.util.concurrent.ExecutionException;
import org.apache.cassandra.cache.JMXInstrumentedCacheMBean;
import org.apache.cassandra.concurrent.IExecutorMBean;
import org.apache.cassandra.db.ColumnFamilyStoreMBean;
import org.apache.cassandra.db.CompactionManager;
import org.apache.cassandra.dht.Range;
import org.apache.commons.cli.*;
import org.apache.commons.lang.StringUtils;
public class NodeCmd {
private static final String HOST_OPT_LONG = "host";
private static final String HOST_OPT_SHORT = "h";
private static final String PORT_OPT_LONG = "port";
private static final String PORT_OPT_SHORT = "p";
private static final int defaultPort = 8080;
private static Options options = null;
private NodeProbe probe;
static
{
options = new Options();
Option optHost = new Option(HOST_OPT_SHORT, HOST_OPT_LONG, true, "node hostname or ip address");
optHost.setRequired(true);
options.addOption(optHost);
options.addOption(PORT_OPT_SHORT, PORT_OPT_LONG, true, "remote jmx agent port number");
}
public NodeCmd(NodeProbe probe)
{
this.probe = probe;
}
/**
* Prints usage information to stdout.
*/
private static void printUsage()
{
HelpFormatter hf = new HelpFormatter();
String header = String.format(
"%nAvailable commands: ring, info, cleanup, compact, cfstats, snapshot [snapshotname], clearsnapshot, " +
"tpstats, flush, drain, repair, decommission, move, loadbalance, removetoken, " +
"setcachecapacity <keyspace> <cfname> <keycachecapacity> <rowcachecapacity>, " +
"getcompactionthreshold, setcompactionthreshold [minthreshold] ([maxthreshold])" +
"streams [host]");
String usage = String.format("java %s --host <arg> <command>%n", NodeCmd.class.getName());
hf.printHelp(usage, "", options, header);
}
/**
* Write a textual representation of the Cassandra ring.
*
* @param outs the stream to write to
*/
public void printRing(PrintStream outs)
{
Map<Range, List<String>> rangeMap = probe.getRangeToEndPointMap(null);
List<Range> ranges = new ArrayList<Range>(rangeMap.keySet());
Collections.sort(ranges);
Set<String> liveNodes = probe.getLiveNodes();
Set<String> deadNodes = probe.getUnreachableNodes();
Map<String, String> loadMap = probe.getLoadMap();
// Print range-to-endpoint mapping
int counter = 0;
outs.print(String.format("%-14s", "Address"));
outs.print(String.format("%-11s", "Status"));
outs.print(String.format("%-14s", "Load"));
outs.print(String.format("%-43s", "Range"));
outs.println("Ring");
// emphasize that we're showing the right part of each range
if (ranges.size() > 1)
{
outs.println(String.format("%-14s%-11s%-14s%-43s", "", "", "", ranges.get(0).left));
}
// normal range & node info
for (Range range : ranges) {
List<String> endpoints = rangeMap.get(range);
String primaryEndpoint = endpoints.get(0);
outs.print(String.format("%-14s", primaryEndpoint));
String status = liveNodes.contains(primaryEndpoint)
? "Up"
: deadNodes.contains(primaryEndpoint)
? "Down"
: "?";
outs.print(String.format("%-11s", status));
String load = loadMap.containsKey(primaryEndpoint) ? loadMap.get(primaryEndpoint) : "?";
outs.print(String.format("%-14s", load));
outs.print(String.format("%-43s", range.right));
String asciiRingArt;
if (counter == 0)
{
asciiRingArt = "|<--|";
}
else if (counter == (rangeMap.size() - 1))
{
asciiRingArt = "|-->|";
}
else
{
if ((rangeMap.size() > 4) && ((counter % 2) == 0))
asciiRingArt = "v |";
else if ((rangeMap.size() > 4) && ((counter % 2) != 0))
asciiRingArt = "| ^";
else
asciiRingArt = "| |";
}
outs.println(asciiRingArt);
counter++;
}
}
public void printThreadPoolStats(PrintStream outs)
{
outs.print(String.format("%-25s", "Pool Name"));
outs.print(String.format("%10s", "Active"));
outs.print(String.format("%10s", "Pending"));
outs.print(String.format("%15s", "Completed"));
outs.println();
Iterator<Map.Entry<String, IExecutorMBean>> threads = probe.getThreadPoolMBeanProxies();
for (; threads.hasNext();)
{
Map.Entry<String, IExecutorMBean> thread = threads.next();
String poolName = thread.getKey();
IExecutorMBean threadPoolProxy = thread.getValue();
outs.print(String.format("%-25s", poolName));
outs.print(String.format("%10d", threadPoolProxy.getActiveCount()));
outs.print(String.format("%10d", threadPoolProxy.getPendingTasks()));
outs.print(String.format("%15d", threadPoolProxy.getCompletedTasks()));
outs.println();
}
}
/**
* Write node information.
*
* @param outs the stream to write to
*/
public void printInfo(PrintStream outs)
{
outs.println(probe.getToken());
outs.println(String.format("%-17s: %s", "Load", probe.getLoadString()));
outs.println(String.format("%-17s: %s", "Generation No", probe.getCurrentGenerationNumber()));
// Uptime
long secondsUp = probe.getUptime() / 1000;
outs.println(String.format("%-17s: %d", "Uptime (seconds)", secondsUp));
// Memory usage
MemoryUsage heapUsage = probe.getHeapMemoryUsage();
double memUsed = (double)heapUsage.getUsed() / (1024 * 1024);
double memMax = (double)heapUsage.getMax() / (1024 * 1024);
outs.println(String.format("%-17s: %.2f / %.2f", "Heap Memory (MB)", memUsed, memMax));
}
public void printStreamInfo(final InetAddress addr, PrintStream outs)
{
outs.println(String.format("Mode: %s", probe.getOperationMode()));
Set<InetAddress> hosts = addr == null ? probe.getStreamDestinations() : new HashSet<InetAddress>(){{add(addr);}};
if (hosts.size() == 0)
outs.println("Not sending any streams.");
for (InetAddress host : hosts)
{
try
{
List<String> files = probe.getFilesDestinedFor(host);
if (files.size() > 0)
{
outs.println(String.format("Streaming to: %s", host));
for (String file : files)
outs.println(String.format(" %s", file));
}
else
{
outs.println(String.format(" Nothing streaming to %s", host));
}
}
catch (IOException ex)
{
outs.println(String.format(" Error retrieving file data for %s", host));
}
}
hosts = addr == null ? probe.getStreamSources() : new HashSet<InetAddress>(){{add(addr); }};
if (hosts.size() == 0)
outs.println("Not receiving any streams.");
for (InetAddress host : hosts)
{
try
{
List<String> files = probe.getIncomingFiles(host);
if (files.size() > 0)
{
outs.println(String.format("Streaming from: %s", host));
for (String file : files)
outs.println(String.format(" %s", file));
}
else
{
outs.println(String.format(" Nothing streaming from %s", host));
}
}
catch (IOException ex)
{
outs.println(String.format(" Error retrieving file data for %s", host));
}
}
}
public void printColumnFamilyStats(PrintStream outs)
{
Map <String, List <ColumnFamilyStoreMBean>> cfstoreMap = new HashMap <String, List <ColumnFamilyStoreMBean>>();
// get a list of column family stores
Iterator<Map.Entry<String, ColumnFamilyStoreMBean>> cfamilies = probe.getColumnFamilyStoreMBeanProxies();
for (;cfamilies.hasNext();)
{
Map.Entry<String, ColumnFamilyStoreMBean> entry = cfamilies.next();
String tableName = entry.getKey();
ColumnFamilyStoreMBean cfsProxy = entry.getValue();
if (!cfstoreMap.containsKey(tableName))
{
List<ColumnFamilyStoreMBean> columnFamilies = new ArrayList<ColumnFamilyStoreMBean>();
columnFamilies.add(cfsProxy);
cfstoreMap.put(tableName, columnFamilies);
}
else
{
cfstoreMap.get(tableName).add(cfsProxy);
}
}
// print out the table statistics
for (Entry<String, List<ColumnFamilyStoreMBean>> entry : cfstoreMap.entrySet())
{
String tableName = entry.getKey();
List<ColumnFamilyStoreMBean> columnFamilies = entry.getValue();
int tableReadCount = 0;
int tableWriteCount = 0;
int tablePendingTasks = 0;
double tableTotalReadTime = 0.0f;
double tableTotalWriteTime = 0.0f;
outs.println("Keyspace: " + tableName);
for (ColumnFamilyStoreMBean cfstore : columnFamilies)
{
long writeCount = cfstore.getWriteCount();
long readCount = cfstore.getReadCount();
if (readCount > 0)
{
tableReadCount += readCount;
tableTotalReadTime += cfstore.getTotalReadLatencyMicros();
}
if (writeCount > 0)
{
tableWriteCount += writeCount;
tableTotalWriteTime += cfstore.getTotalWriteLatencyMicros();
}
tablePendingTasks += cfstore.getPendingTasks();
}
double tableReadLatency = tableReadCount > 0 ? tableTotalReadTime / tableReadCount / 1000 : Double.NaN;
double tableWriteLatency = tableWriteCount > 0 ? tableTotalWriteTime / tableWriteCount / 1000 : Double.NaN;
outs.println("\tRead Count: " + tableReadCount);
outs.println("\tRead Latency: " + String.format("%s", tableReadLatency) + " ms.");
outs.println("\tWrite Count: " + tableWriteCount);
outs.println("\tWrite Latency: " + String.format("%s", tableWriteLatency) + " ms.");
outs.println("\tPending Tasks: " + tablePendingTasks);
// print out column family statistics for this table
for (ColumnFamilyStoreMBean cfstore : columnFamilies)
{
outs.println("\t\tColumn Family: " + cfstore.getColumnFamilyName());
outs.println("\t\tSSTable count: " + cfstore.getLiveSSTableCount());
outs.println("\t\tSpace used (live): " + cfstore.getLiveDiskSpaceUsed());
outs.println("\t\tSpace used (total): " + cfstore.getTotalDiskSpaceUsed());
outs.println("\t\tMemtable Columns Count: " + cfstore.getMemtableColumnsCount());
outs.println("\t\tMemtable Data Size: " + cfstore.getMemtableDataSize());
outs.println("\t\tMemtable Switch Count: " + cfstore.getMemtableSwitchCount());
outs.println("\t\tRead Count: " + cfstore.getReadCount());
outs.println("\t\tRead Latency: " + String.format("%01.3f", cfstore.getRecentReadLatencyMicros() / 1000) + " ms.");
outs.println("\t\tWrite Count: " + cfstore.getWriteCount());
outs.println("\t\tWrite Latency: " + String.format("%01.3f", cfstore.getRecentWriteLatencyMicros() / 1000) + " ms.");
outs.println("\t\tPending Tasks: " + cfstore.getPendingTasks());
JMXInstrumentedCacheMBean keyCacheMBean = probe.getKeyCacheMBean(tableName, cfstore.getColumnFamilyName());
if (keyCacheMBean.getCapacity() > 0)
{
outs.println("\t\tKey cache capacity: " + keyCacheMBean.getCapacity());
outs.println("\t\tKey cache size: " + keyCacheMBean.getSize());
outs.println("\t\tKey cache hit rate: " + keyCacheMBean.getRecentHitRate());
}
else
{
outs.println("\t\tKey cache: disabled");
}
JMXInstrumentedCacheMBean rowCacheMBean = probe.getRowCacheMBean(tableName, cfstore.getColumnFamilyName());
if (rowCacheMBean.getCapacity() > 0)
{
outs.println("\t\tRow cache capacity: " + rowCacheMBean.getCapacity());
outs.println("\t\tRow cache size: " + rowCacheMBean.getSize());
outs.println("\t\tRow cache hit rate: " + rowCacheMBean.getRecentHitRate());
}
else
{
outs.println("\t\tRow cache: disabled");
}
outs.println("\t\tCompacted row minimum size: " + cfstore.getMinRowCompactedSize());
outs.println("\t\tCompacted row maximum size: " + cfstore.getMaxRowCompactedSize());
outs.println("\t\tCompacted row mean size: " + cfstore.getMeanRowCompactedSize());
outs.println("");
}
outs.println("----------------");
}
}
public static void main(String[] args) throws IOException, InterruptedException, ParseException
{
CommandLineParser parser = new PosixParser();
CommandLine cmd = null;
try
{
cmd = parser.parse(options, args);
}
catch (ParseException parseExcep)
{
System.err.println(parseExcep);
printUsage();
System.exit(1);
}
String host = cmd.getOptionValue(HOST_OPT_LONG);
int port = defaultPort;
String portNum = cmd.getOptionValue(PORT_OPT_LONG);
if (portNum != null)
{
try
{
port = Integer.parseInt(portNum);
}
catch (NumberFormatException e)
{
throw new ParseException("Port must be a number");
}
}
NodeProbe probe = null;
try
{
probe = new NodeProbe(host, port);
}
catch (IOException ioe)
{
System.err.println("Error connecting to remote JMX agent!");
ioe.printStackTrace();
System.exit(3);
}
if (cmd.getArgs().length < 1)
{
System.err.println("Missing argument for command.");
printUsage();
System.exit(1);
}
NodeCmd nodeCmd = new NodeCmd(probe);
// Execute the requested command.
String[] arguments = cmd.getArgs();
String cmdName = arguments[0];
if (cmdName.equals("ring"))
{
nodeCmd.printRing(System.out);
}
else if (cmdName.equals("info"))
{
nodeCmd.printInfo(System.out);
}
else if (cmdName.equals("cleanup"))
{
probe.forceTableCleanup();
}
else if (cmdName.equals("compact"))
{
probe.forceTableCompaction();
}
else if (cmdName.equals("cfstats"))
{
nodeCmd.printColumnFamilyStats(System.out);
}
else if (cmdName.equals("decommission"))
{
probe.decommission();
}
else if (cmdName.equals("loadbalance"))
{
probe.loadBalance();
}
else if (cmdName.equals("move"))
{
if (arguments.length <= 1)
{
System.err.println("missing token argument");
}
probe.move(arguments[1]);
}
else if (cmdName.equals("removetoken"))
{
if (arguments.length <= 1)
{
System.err.println("missing token argument");
}
probe.removeToken(arguments[1]);
}
else if (cmdName.equals("snapshot"))
{
String snapshotName = "";
if (arguments.length > 1)
{
snapshotName = arguments[1];
}
probe.takeSnapshot(snapshotName);
}
else if (cmdName.equals("clearsnapshot"))
{
probe.clearSnapshot();
}
else if (cmdName.equals("tpstats"))
{
nodeCmd.printThreadPoolStats(System.out);
}
else if (cmdName.equals("flush") || cmdName.equals("repair"))
{
if (cmd.getArgs().length < 2)
{
System.err.println("Missing keyspace argument.");
printUsage();
System.exit(1);
}
String[] columnFamilies = new String[cmd.getArgs().length - 2];
for (int i = 0; i < columnFamilies.length; i++)
{
columnFamilies[i] = cmd.getArgs()[i + 2];
}
if (cmdName.equals("flush"))
probe.forceTableFlush(cmd.getArgs()[1], columnFamilies);
else // cmdName.equals("repair")
probe.forceTableRepair(cmd.getArgs()[1], columnFamilies);
}
else if (cmdName.equals("drain"))
{
try
{
probe.drain();
} catch (ExecutionException ee)
{
System.err.println("Error occured during flushing");
ee.printStackTrace();
System.exit(3);
}
}
else if (cmdName.equals("setcachecapacity"))
{
if (cmd.getArgs().length != 5)
{
System.err.println("cacheinfo requires keyspace and column family name arguments, followed by key cache capacity and row cache capacity, in rows");
}
String tableName = cmd.getArgs()[1];
String cfName = cmd.getArgs()[2];
int keyCacheCapacity = Integer.valueOf(cmd.getArgs()[3]);
int rowCacheCapacity = Integer.valueOf(cmd.getArgs()[4]);
probe.setCacheCapacities(tableName, cfName, keyCacheCapacity, rowCacheCapacity);
}
else if (cmdName.equals("getcompactionthreshold"))
{
probe.getCompactionThreshold(System.out);
}
else if (cmdName.equals("setcompactionthreshold"))
{
if (arguments.length < 2)
{
System.err.println("Missing threshold value(s)");
printUsage();
System.exit(1);
}
int minthreshold = Integer.parseInt(arguments[1]);
int maxthreshold = CompactionManager.instance.getMaximumCompactionThreshold();
if (arguments.length > 2)
{
maxthreshold = Integer.parseInt(arguments[2]);
}
if (minthreshold > maxthreshold)
{
System.err.println("Min threshold can't be greater than Max threshold");
printUsage();
System.exit(1);
}
if (minthreshold < 2 && maxthreshold != 0)
{
System.err.println("Min threshold must be at least 2");
printUsage();
System.exit(1);
}
probe.setCompactionThreshold(minthreshold, maxthreshold);
}
else if (cmdName.equals("streams"))
{
String otherHost = arguments.length > 1 ? arguments[1] : null;
nodeCmd.printStreamInfo(otherHost == null ? null : InetAddress.getByName(otherHost), System.out);
}
else
{
System.err.println("Unrecognized command: " + cmdName + ".");
printUsage();
System.exit(1);
}
System.exit(0);
}
}