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.net.UnknownHostException;
import java.text.DecimalFormat;
import java.util.*;
import java.util.Map.Entry;
import java.util.concurrent.ExecutionException;
import org.apache.commons.cli.*;
import org.apache.cassandra.cache.InstrumentingCacheMBean;
import org.apache.cassandra.concurrent.JMXEnabledThreadPoolExecutorMBean;
import org.apache.cassandra.config.ConfigurationException;
import org.apache.cassandra.db.ColumnFamilyStoreMBean;
import org.apache.cassandra.db.compaction.CompactionInfo;
import org.apache.cassandra.db.compaction.CompactionManagerMBean;
import org.apache.cassandra.dht.Token;
import org.apache.cassandra.net.MessagingServiceMBean;
import org.apache.cassandra.utils.EstimatedHistogram;
import org.apache.cassandra.utils.Pair;
public class NodeCmd
{
private static final Pair<String, String> HOST_OPT = new Pair<String, String>("h", "host");
private static final Pair<String, String> PORT_OPT = new Pair<String, String>("p", "port");
private static final Pair<String, String> USERNAME_OPT = new Pair<String, String>("u", "username");
private static final Pair<String, String> PASSWORD_OPT = new Pair<String, String>("pw", "password");
private static final Pair<String, String> TAG_OPT = new Pair<String, String>("t", "tag");
private static final int DEFAULT_PORT = 7199;
private static ToolOptions options = null;
private NodeProbe probe;
static
{
options = new ToolOptions();
options.addOption(HOST_OPT, true, "node hostname or ip address", true);
options.addOption(PORT_OPT, true, "remote jmx agent port number");
options.addOption(USERNAME_OPT, true, "remote jmx agent username");
options.addOption(PASSWORD_OPT, true, "remote jmx agent password");
options.addOption(TAG_OPT, true, "optional name to give a snapshot");
}
public NodeCmd(NodeProbe probe)
{
this.probe = probe;
}
public enum NodeCommand
{
RING, INFO, CFSTATS, SNAPSHOT, CLEARSNAPSHOT, VERSION, TPSTATS, FLUSH, DRAIN,
DECOMMISSION, MOVE, REMOVETOKEN, REPAIR, CLEANUP, COMPACT, SCRUB,
SETCACHECAPACITY, GETCOMPACTIONTHRESHOLD, SETCOMPACTIONTHRESHOLD, NETSTATS, CFHISTOGRAMS,
COMPACTIONSTATS, DISABLEGOSSIP, ENABLEGOSSIP, INVALIDATEKEYCACHE, INVALIDATEROWCACHE,
DISABLETHRIFT, ENABLETHRIFT, STATUSTHRIFT, JOIN, SETCOMPACTIONTHROUGHPUT, GETENDPOINTS,
REFRESH
}
/**
* Prints usage information to stdout.
*/
private static void printUsage()
{
HelpFormatter hf = new HelpFormatter();
StringBuilder header = new StringBuilder();
header.append("\nAvailable commands:\n");
// No args
addCmdHelp(header, "ring", "Print informations on the token ring");
addCmdHelp(header, "join", "Join the ring");
addCmdHelp(header, "info", "Print node informations (uptime, load, ...)");
addCmdHelp(header, "cfstats", "Print statistics on column families");
addCmdHelp(header, "version", "Print cassandra version");
addCmdHelp(header, "tpstats", "Print usage statistics of thread pools");
addCmdHelp(header, "drain", "Drain the node (stop accepting writes and flush all column families)");
addCmdHelp(header, "decommission", "Decommission the node");
addCmdHelp(header, "compactionstats", "Print statistics on compactions");
addCmdHelp(header, "disablegossip", "Disable gossip (effectively marking the node dead)");
addCmdHelp(header, "enablegossip", "Reenable gossip");
addCmdHelp(header, "disablethrift", "Disable thrift server");
addCmdHelp(header, "enablethrift", "Reenable thrift server");
addCmdHelp(header, "statusthrift", "Status of thrift server");
// One arg
addCmdHelp(header, "netstats [host]", "Print network information on provided host (connecting node by default)");
addCmdHelp(header, "move <new token>", "Move node on the token ring to a new token");
addCmdHelp(header, "removetoken status|force|<token>", "Show status of current token removal, force completion of pending removal or remove providen token");
addCmdHelp(header, "setcompactionthroughput <value_in_mb>", "Set the MB/s throughput cap for compaction in the system, or 0 to disable throttling.");
// Two args
addCmdHelp(header, "snapshot [keyspaces...] -t [snapshotName]", "Take a snapshot of the specified keyspaces using optional name snapshotName");
addCmdHelp(header, "clearsnapshot [keyspaces...] -t [snapshotName]", "Remove snapshots for the specified keyspaces. Either remove all snapshots or remove the snapshots with the given name.");
addCmdHelp(header, "flush [keyspace] [cfnames]", "Flush one or more column family");
addCmdHelp(header, "repair [keyspace] [cfnames]", "Repair one or more column family");
addCmdHelp(header, "cleanup [keyspace] [cfnames]", "Run cleanup on one or more column family");
addCmdHelp(header, "compact [keyspace] [cfnames]", "Force a (major) compaction on one or more column family");
addCmdHelp(header, "scrub [keyspace] [cfnames]", "Scrub (rebuild sstables for) one or more column family");
addCmdHelp(header, "invalidatekeycache [keyspace] [cfnames]", "Invalidate the key cache of one or more column family");
addCmdHelp(header, "invalidaterowcache [keyspace] [cfnames]", "Invalidate the key cache of one or more column family");
addCmdHelp(header, "getcompactionthreshold <keyspace> <cfname>", "Print min and max compaction thresholds for a given column family");
addCmdHelp(header, "cfhistograms <keyspace> <cfname>", "Print statistic histograms for a given column family");
addCmdHelp(header, "refresh <keyspace> <cf-name>", "Load newly placed SSTables to the system without restart.");
// Three args
addCmdHelp(header, "getendpoints <keyspace> <cf> <key>", "Print the end points that owns the key");
// Four args
addCmdHelp(header, "setcachecapacity <keyspace> <cfname> <keycachecapacity> <rowcachecapacity>", "Set the key and row cache capacities of a given column family");
addCmdHelp(header, "setcompactionthreshold <keyspace> <cfname> <minthreshold> <maxthreshold>", "Set the min and max compaction thresholds for a given column family");
String usage = String.format("java %s --host <arg> <command>%n", NodeCmd.class.getName());
hf.printHelp(usage, "", options, "");
System.out.println(header.toString());
}
private static void addCmdHelp(StringBuilder sb, String cmd, String description)
{
sb.append(" ").append(cmd);
// Ghetto indentation (trying, but not too hard, to not look too bad)
if (cmd.length() <= 20)
for (int i = cmd.length(); i < 22; ++i) sb.append(" ");
sb.append(" - ").append(description).append("\n");
}
/**
* Write a textual representation of the Cassandra ring.
*
* @param outs the stream to write to
*/
public void printRing(PrintStream outs)
{
Map<Token, String> tokenToEndpoint = probe.getTokenToEndpointMap();
List<Token> sortedTokens = new ArrayList<Token>(tokenToEndpoint.keySet());
Collections.sort(sortedTokens);
Collection<String> liveNodes = probe.getLiveNodes();
Collection<String> deadNodes = probe.getUnreachableNodes();
Collection<String> joiningNodes = probe.getJoiningNodes();
Collection<String> leavingNodes = probe.getLeavingNodes();
Collection<String> movingNodes = probe.getMovingNodes();
Map<String, String> loadMap = probe.getLoadMap();
String format = "%-16s%-12s%-12s%-7s%-8s%-16s%-8s%-44s%n";
outs.printf(format, "Address", "DC", "Rack", "Status", "State", "Load", "Owns", "Token");
// show pre-wrap token twice so you can always read a node's range as
// (previous line token, current line token]
if (sortedTokens.size() > 1)
outs.printf(format, "", "", "", "", "", "", "", sortedTokens.get(sortedTokens.size() - 1));
// Calculate per-token ownership of the ring
Map<Token, Float> ownerships = probe.getOwnership();
for (Token token : sortedTokens)
{
String primaryEndpoint = tokenToEndpoint.get(token);
String dataCenter;
try
{
dataCenter = probe.getEndpointSnitchInfoProxy().getDatacenter(primaryEndpoint);
}
catch (UnknownHostException e)
{
dataCenter = "Unknown";
}
String rack;
try
{
rack = probe.getEndpointSnitchInfoProxy().getRack(primaryEndpoint);
}
catch (UnknownHostException e)
{
rack = "Unknown";
}
String status = liveNodes.contains(primaryEndpoint)
? "Up"
: deadNodes.contains(primaryEndpoint)
? "Down"
: "?";
String state = "Normal";
if (joiningNodes.contains(primaryEndpoint))
state = "Joining";
else if (leavingNodes.contains(primaryEndpoint))
state = "Leaving";
else if (movingNodes.contains(primaryEndpoint))
state = "Moving";
String load = loadMap.containsKey(primaryEndpoint)
? loadMap.get(primaryEndpoint)
: "?";
String owns = new DecimalFormat("##0.00%").format(ownerships.get(token));
outs.printf(format, primaryEndpoint, dataCenter, rack, status, state, load, owns, token);
}
}
public void printThreadPoolStats(PrintStream outs)
{
outs.printf("%-25s%10s%10s%15s%10s%18s%n", "Pool Name", "Active", "Pending", "Completed", "Blocked", "All time blocked");
Iterator<Map.Entry<String, JMXEnabledThreadPoolExecutorMBean>> threads = probe.getThreadPoolMBeanProxies();
while (threads.hasNext())
{
Entry<String, JMXEnabledThreadPoolExecutorMBean> thread = threads.next();
String poolName = thread.getKey();
JMXEnabledThreadPoolExecutorMBean threadPoolProxy = thread.getValue();
outs.printf("%-25s%10s%10s%15s%10s%18s%n",
poolName,
threadPoolProxy.getActiveCount(),
threadPoolProxy.getPendingTasks(),
threadPoolProxy.getCompletedTasks(),
threadPoolProxy.getCurrentlyBlockedTasks(),
threadPoolProxy.getTotalBlockedTasks());
}
outs.printf("%n%-20s%10s%n", "Message type", "Dropped");
for (Entry<String, Integer> entry : probe.getDroppedMessages().entrySet())
outs.printf("%-20s%10s%n", entry.getKey(), entry.getValue());
}
/**
* Write node information.
*
* @param outs the stream to write to
*/
public void printInfo(PrintStream outs)
{
boolean gossipInitialized = probe.isInitialized();
outs.printf("%-17s: %s%n", "Token", probe.getToken());
outs.printf("%-17s: %s%n", "Gossip active", gossipInitialized);
outs.printf("%-17s: %s%n", "Load", probe.getLoadString());
if (gossipInitialized)
outs.printf("%-17s: %s%n", "Generation No", probe.getCurrentGenerationNumber());
else
outs.printf("%-17s: %s%n", "Generation No", 0);
// Uptime
long secondsUp = probe.getUptime() / 1000;
outs.printf("%-17s: %d%n", "Uptime (seconds)", secondsUp);
// Memory usage
MemoryUsage heapUsage = probe.getHeapMemoryUsage();
double memUsed = (double)heapUsage.getUsed() / (1024 * 1024);
double memMax = (double)heapUsage.getMax() / (1024 * 1024);
outs.printf("%-17s: %.2f / %.2f%n", "Heap Memory (MB)", memUsed, memMax);
// Data Center/Rack
outs.printf("%-17s: %s%n", "Data Center", probe.getDataCenter());
outs.printf("%-17s: %s%n", "Rack", probe.getRack());
// Exceptions
outs.printf("%-17s: %s%n", "Exceptions", probe.getExceptionCount());
}
public void printReleaseVersion(PrintStream outs)
{
outs.println("ReleaseVersion: " + probe.getReleaseVersion());
}
public void printNetworkStats(final InetAddress addr, PrintStream outs)
{
outs.printf("Mode: %s%n", 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.printf("Streaming to: %s%n", host);
for (String file : files)
outs.printf(" %s%n", file);
}
else
{
outs.printf(" Nothing streaming to %s%n", host);
}
}
catch (IOException ex)
{
outs.printf(" Error retrieving file data for %s%n", 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.printf("Streaming from: %s%n", host);
for (String file : files)
outs.printf(" %s%n", file);
}
else
{
outs.printf(" Nothing streaming from %s%n", host);
}
}
catch (IOException ex)
{
outs.printf(" Error retrieving file data for %s%n", host);
}
}
MessagingServiceMBean ms = probe.msProxy;
outs.printf("%-25s", "Pool Name");
outs.printf("%10s", "Active");
outs.printf("%10s", "Pending");
outs.printf("%15s%n", "Completed");
int pending;
long completed;
pending = 0;
for (int n : ms.getCommandPendingTasks().values())
pending += n;
completed = 0;
for (long n : ms.getCommandCompletedTasks().values())
completed += n;
outs.printf("%-25s%10s%10s%15s%n", "Commands", "n/a", pending, completed);
pending = 0;
for (int n : ms.getResponsePendingTasks().values())
pending += n;
completed = 0;
for (long n : ms.getResponseCompletedTasks().values())
completed += n;
outs.printf("%-25s%10s%10s%15s%n", "Responses", "n/a", pending, completed);
}
public void printCompactionStats(PrintStream outs)
{
CompactionManagerMBean cm = probe.getCompactionManagerProxy();
outs.println("pending tasks: " + cm.getPendingTasks());
if (cm.getCompactions().size() > 0)
outs.printf("%25s%16s%16s%16s%16s%10s%n", "compaction type", "keyspace", "column family", "bytes compacted", "bytes total", "progress");
for (CompactionInfo c : cm.getCompactions())
{
String percentComplete = c.getTotalBytes() == 0
? "n/a"
: new DecimalFormat("0.00").format((double) c.getBytesComplete() / c.getTotalBytes() * 100) + "%";
outs.printf("%25s%16s%16s%16s%16s%10s%n", c.getTaskType(), c.getKeyspace(), c.getColumnFamily(), c.getBytesComplete(), c.getTotalBytes(), percentComplete);
}
}
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();
while (cfamilies.hasNext())
{
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();
long tableReadCount = 0;
long 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\tNumber of Keys (estimate): " + cfstore.estimateKeys());
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());
InstrumentingCacheMBean 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");
}
InstrumentingCacheMBean 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.getMinRowSize());
outs.println("\t\tCompacted row maximum size: " + cfstore.getMaxRowSize());
outs.println("\t\tCompacted row mean size: " + cfstore.getMeanRowSize());
outs.println("");
}
outs.println("----------------");
}
}
public void printRemovalStatus(PrintStream outs)
{
outs.println("RemovalStatus: " + probe.getRemovalStatus());
}
private void printCfHistograms(String keySpace, String columnFamily, PrintStream output)
{
ColumnFamilyStoreMBean store = this.probe.getCfsProxy(keySpace, columnFamily);
// default is 90 offsets
long[] offsets = new EstimatedHistogram().getBucketOffsets();
long[] rrlh = store.getRecentReadLatencyHistogramMicros();
long[] rwlh = store.getRecentWriteLatencyHistogramMicros();
long[] sprh = store.getRecentSSTablesPerReadHistogram();
long[] ersh = store.getEstimatedRowSizeHistogram();
long[] ecch = store.getEstimatedColumnCountHistogram();
output.println(String.format("%s/%s histograms", keySpace, columnFamily));
output.println(String.format("%-10s%10s%18s%18s%18s%18s",
"Offset", "SSTables", "Write Latency", "Read Latency", "Row Size", "Column Count"));
for (int i = 0; i < offsets.length; i++)
{
output.println(String.format("%-10d%10s%18s%18s%18s%18s",
offsets[i],
(i < sprh.length ? sprh[i] : ""),
(i < rwlh.length ? rrlh[i] : ""),
(i < rrlh.length ? rwlh[i] : ""),
(i < ersh.length ? ersh[i] : ""),
(i < ecch.length ? ecch[i] : "")));
}
}
private void printEndPoints(String keySpace, String cf, String key, PrintStream output)
{
List<InetAddress> endpoints = this.probe.getEndpoints(keySpace, cf, key);
for (InetAddress anEndpoint : endpoints)
{
output.println(anEndpoint.getHostAddress());
}
}
private void printIsThriftServerRunning(PrintStream outs)
{
outs.println(probe.isThriftServerRunning() ? "running" : "not running");
}
public static void main(String[] args) throws IOException, InterruptedException, ConfigurationException, ParseException
{
CommandLineParser parser = new PosixParser();
ToolCommandLine cmd = null;
try
{
cmd = new ToolCommandLine(parser.parse(options, args));
}
catch (ParseException p)
{
badUse(p.getMessage());
}
String host = cmd.getOptionValue(HOST_OPT.left);
int port = DEFAULT_PORT;
String portNum = cmd.getOptionValue(PORT_OPT.left);
if (portNum != null)
{
try
{
port = Integer.parseInt(portNum);
}
catch (NumberFormatException e)
{
throw new ParseException("Port must be a number");
}
}
String username = cmd.getOptionValue(USERNAME_OPT.left);
String password = cmd.getOptionValue(PASSWORD_OPT.left);
NodeProbe probe = null;
try
{
probe = username == null ? new NodeProbe(host, port) : new NodeProbe(host, port, username, password);
}
catch (IOException ioe)
{
err(ioe, "Error connection to remote JMX agent!");
}
NodeCommand command = null;
try
{
command = cmd.getCommand();
}
catch (IllegalArgumentException e)
{
badUse(e.getMessage());
}
NodeCmd nodeCmd = new NodeCmd(probe);
// Execute the requested command.
String[] arguments = cmd.getCommandArguments();
switch (command)
{
case RING : nodeCmd.printRing(System.out); break;
case INFO : nodeCmd.printInfo(System.out); break;
case CFSTATS : nodeCmd.printColumnFamilyStats(System.out); break;
case DECOMMISSION : probe.decommission(); break;
case TPSTATS : nodeCmd.printThreadPoolStats(System.out); break;
case VERSION : nodeCmd.printReleaseVersion(System.out); break;
case COMPACTIONSTATS : nodeCmd.printCompactionStats(System.out); break;
case DISABLEGOSSIP : probe.stopGossiping(); break;
case ENABLEGOSSIP : probe.startGossiping(); break;
case DISABLETHRIFT : probe.stopThriftServer(); break;
case ENABLETHRIFT : probe.startThriftServer(); break;
case STATUSTHRIFT : nodeCmd.printIsThriftServerRunning(System.out); break;
case DRAIN :
try { probe.drain(); }
catch (ExecutionException ee) { err(ee, "Error occured during flushing"); }
break;
case NETSTATS :
if (arguments.length > 0) { nodeCmd.printNetworkStats(InetAddress.getByName(arguments[0]), System.out); }
else { nodeCmd.printNetworkStats(null, System.out); }
break;
case SNAPSHOT :
case CLEARSNAPSHOT :
String tag = cmd.getOptionValue(TAG_OPT.left);
handleSnapshots(command, tag, arguments, probe);
break;
case MOVE :
if (arguments.length != 1) { badUse("Missing token argument for move."); }
probe.move(arguments[0]);
break;
case JOIN:
if (probe.isJoined())
{
System.err.println("This node has already joined the ring.");
System.exit(1);
}
probe.joinRing();
break;
case SETCOMPACTIONTHROUGHPUT :
if (arguments.length != 1) { badUse("Missing value argument."); }
probe.setCompactionThroughput(Integer.valueOf(arguments[0]));
break;
case REMOVETOKEN :
if (arguments.length != 1) { badUse("Missing an argument for removetoken (either status, force, or a token)"); }
else if (arguments[0].equals("status")) { nodeCmd.printRemovalStatus(System.out); }
else if (arguments[0].equals("force")) { nodeCmd.printRemovalStatus(System.out); probe.forceRemoveCompletion(); }
else { probe.removeToken(arguments[0]); }
break;
case CLEANUP :
case COMPACT :
case REPAIR :
case FLUSH :
case SCRUB :
case INVALIDATEKEYCACHE :
case INVALIDATEROWCACHE :
optionalKSandCFs(command, arguments, probe);
break;
case GETCOMPACTIONTHRESHOLD :
if (arguments.length != 2) { badUse("getcompactionthreshold requires ks and cf args."); }
probe.getCompactionThreshold(System.out, arguments[0], arguments[1]);
break;
case CFHISTOGRAMS :
if (arguments.length != 2) { badUse("cfhistograms requires ks and cf args"); }
nodeCmd.printCfHistograms(arguments[0], arguments[1], System.out);
break;
case SETCACHECAPACITY :
if (arguments.length != 4) { badUse("setcachecapacity requires ks, cf, keycachecap, and rowcachecap args."); }
probe.setCacheCapacities(arguments[0], arguments[1], Integer.parseInt(arguments[2]), Integer.parseInt(arguments[3]));
break;
case SETCOMPACTIONTHRESHOLD :
if (arguments.length != 4) { badUse("setcompactionthreshold requires ks, cf, min, and max threshold args."); }
int minthreshold = Integer.parseInt(arguments[2]);
int maxthreshold = Integer.parseInt(arguments[3]);
if ((minthreshold < 0) || (maxthreshold < 0)) { badUse("Thresholds must be positive integers"); }
if (minthreshold > maxthreshold) { badUse("Min threshold cannot be greater than max."); }
if (minthreshold < 2 && maxthreshold != 0) { badUse("Min threshold must be at least 2"); }
probe.setCompactionThreshold(arguments[0], arguments[1], minthreshold, maxthreshold);
break;
case GETENDPOINTS :
if (arguments.length != 3) { badUse("getendpoints requires ks, cf and key args"); }
nodeCmd.printEndPoints(arguments[0], arguments[1], arguments[2], System.out);
break;
case REFRESH:
if (arguments.length != 2) { badUse("load_new_sstables requires ks and cf args"); }
probe.loadNewSSTables(arguments[0], arguments[1]);
break;
default :
throw new RuntimeException("Unreachable code.");
}
System.exit(0);
}
private static void badUse(String useStr)
{
System.err.println(useStr);
printUsage();
System.exit(1);
}
private static void err(Exception e, String errStr)
{
System.err.println(errStr);
e.printStackTrace();
System.exit(3);
}
private static void complainNonzeroArgs(String[] args, NodeCommand cmd)
{
if (args.length > 0) {
System.err.println("Too many arguments for command '"+cmd.toString()+"'.");
printUsage();
System.exit(1);
}
}
private static void handleSnapshots(NodeCommand nc, String tag, String[] cmdArgs, NodeProbe probe) throws InterruptedException, IOException
{
String[] keyspaces = Arrays.copyOfRange(cmdArgs, 0, cmdArgs.length);
System.out.print("Requested snapshot for: ");
if ( keyspaces.length > 0 )
{
for (int i = 0; i < keyspaces.length; i++)
System.out.print(keyspaces[i] + " ");
}
else
{
System.out.print("all keyspaces");
}
System.out.println();
switch (nc)
{
case SNAPSHOT :
if (tag == null || tag.equals(""))
tag = new Long(System.currentTimeMillis()).toString();
probe.takeSnapshot(tag, keyspaces);
System.out.println("Snapshot directory: " + tag);
break;
case CLEARSNAPSHOT :
probe.clearSnapshot(tag, keyspaces);
break;
}
}
private static void optionalKSandCFs(NodeCommand nc, String[] cmdArgs, NodeProbe probe) throws InterruptedException, IOException
{
// if there is one additional arg, it's the keyspace; more are columnfamilies
List<String> keyspaces = cmdArgs.length == 0 ? probe.getKeyspaces() : Arrays.asList(cmdArgs[0]);
for (String keyspace : keyspaces)
{
if (!probe.getKeyspaces().contains(keyspace))
{
System.err.println("Keyspace [" + keyspace + "] does not exist.");
System.exit(1);
}
}
// second loop so we're less likely to die halfway through due to invalid keyspace
for (String keyspace : keyspaces)
{
String[] columnFamilies = cmdArgs.length <= 1 ? new String[0] : Arrays.copyOfRange(cmdArgs, 1, cmdArgs.length);
switch (nc)
{
case REPAIR : probe.forceTableRepair(keyspace, columnFamilies); break;
case INVALIDATEKEYCACHE : probe.invalidateKeyCaches(keyspace, columnFamilies); break;
case INVALIDATEROWCACHE : probe.invalidateRowCaches(keyspace, columnFamilies); break;
case FLUSH :
try { probe.forceTableFlush(keyspace, columnFamilies); }
catch (ExecutionException ee) { err(ee, "Error occured during flushing"); }
break;
case COMPACT :
try { probe.forceTableCompaction(keyspace, columnFamilies); }
catch (ExecutionException ee) { err(ee, "Error occured during compaction"); }
break;
case CLEANUP :
if (keyspace.equals("system")) { break; } // Skip cleanup on system cfs.
try { probe.forceTableCleanup(keyspace, columnFamilies); }
catch (ExecutionException ee) { err(ee, "Error occured during cleanup"); }
break;
case SCRUB :
try { probe.scrub(keyspace, columnFamilies); }
catch (ExecutionException ee) { err(ee, "Error occured while scrubbing keyspace " + keyspace); }
break;
default:
throw new RuntimeException("Unreachable code.");
}
}
}
private static class ToolOptions extends Options
{
public void addOption(Pair<String, String> opts, boolean hasArgument, String description)
{
addOption(opts, hasArgument, description, false);
}
public void addOption(Pair<String, String> opts, boolean hasArgument, String description, boolean required)
{
addOption(opts.left, opts.right, hasArgument, description, required);
}
public void addOption(String opt, String longOpt, boolean hasArgument, String description, boolean required)
{
Option option = new Option(opt, longOpt, hasArgument, description);
option.setRequired(required);
addOption(option);
}
}
private static class ToolCommandLine
{
private final CommandLine commandLine;
public ToolCommandLine(CommandLine commands)
{
commandLine = commands;
}
public Option[] getOptions()
{
return commandLine.getOptions();
}
public boolean hasOption(String opt)
{
return commandLine.hasOption(opt);
}
public String getOptionValue(String opt)
{
return commandLine.getOptionValue(opt);
}
public NodeCommand getCommand()
{
if (commandLine.getArgs().length == 0)
throw new IllegalArgumentException("Command was not specified.");
String command = commandLine.getArgs()[0];
try
{
return NodeCommand.valueOf(command.toUpperCase());
}
catch (IllegalArgumentException e)
{
throw new IllegalArgumentException("Unrecognized command: " + command);
}
}
public String[] getCommandArguments()
{
List params = commandLine.getArgList();
if (params.size() < 2) // command parameters are empty
return new String[0];
String[] toReturn = new String[params.size() - 1];
for (int i = 1; i < params.size(); i++)
toReturn[i - 1] = (String) params.get(i);
return toReturn;
}
}
}