/*
* 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.cassandra.tools;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintStream;
import java.lang.management.MemoryUsage;
import java.net.ConnectException;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.text.DecimalFormat;
import java.util.concurrent.ExecutionException;
import java.util.Map.Entry;
import java.util.*;
import com.google.common.collect.LinkedHashMultimap;
import com.google.common.collect.Maps;
import org.apache.commons.cli.*;
import org.apache.cassandra.service.CacheServiceMBean;
import org.apache.cassandra.service.PBSPredictionResult;
import org.apache.cassandra.service.PBSPredictorMBean;
import org.apache.cassandra.service.StorageProxyMBean;
import org.apache.cassandra.concurrent.JMXEnabledThreadPoolExecutorMBean;
import org.apache.cassandra.db.ColumnFamilyStoreMBean;
import org.apache.cassandra.db.Table;
import org.apache.cassandra.db.compaction.CompactionManagerMBean;
import org.apache.cassandra.db.compaction.OperationType;
import org.apache.cassandra.exceptions.ConfigurationException;
import org.apache.cassandra.exceptions.InvalidRequestException;
import org.apache.cassandra.io.util.FileUtils;
import org.apache.cassandra.locator.EndpointSnitchInfoMBean;
import org.apache.cassandra.net.MessagingServiceMBean;
import org.apache.cassandra.utils.EstimatedHistogram;
import org.apache.cassandra.utils.Pair;
import org.yaml.snakeyaml.Loader;
import org.yaml.snakeyaml.TypeDescription;
import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.constructor.Constructor;
public class NodeCmd
{
private static final Pair<String, String> SNAPSHOT_COLUMNFAMILY_OPT = Pair.create("cf", "column-family");
private static final Pair<String, String> HOST_OPT = Pair.create("h", "host");
private static final Pair<String, String> PORT_OPT = Pair.create("p", "port");
private static final Pair<String, String> USERNAME_OPT = Pair.create("u", "username");
private static final Pair<String, String> PASSWORD_OPT = Pair.create("pw", "password");
private static final Pair<String, String> TAG_OPT = Pair.create("t", "tag");
private static final Pair<String, String> TOKENS_OPT = Pair.create("T", "tokens");
private static final Pair<String, String> PRIMARY_RANGE_OPT = Pair.create("pr", "partitioner-range");
private static final Pair<String, String> SNAPSHOT_REPAIR_OPT = Pair.create("snapshot", "with-snapshot");
private static final Pair<String, String> LOCAL_DC_REPAIR_OPT = Pair.create("local", "in-local-dc");
private static final String DEFAULT_HOST = "127.0.0.1";
private static final int DEFAULT_PORT = 7199;
private static final ToolOptions options = new ToolOptions();
private final NodeProbe probe;
static
{
options.addOption(SNAPSHOT_COLUMNFAMILY_OPT, true, "only take a snapshot of the specified column family");
options.addOption(HOST_OPT, true, "node hostname or ip address");
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");
options.addOption(TOKENS_OPT, false, "display all tokens");
options.addOption(PRIMARY_RANGE_OPT, false, "only repair the first range returned by the partitioner for the node");
options.addOption(SNAPSHOT_REPAIR_OPT, false, "repair one node at a time using snapshots");
options.addOption(LOCAL_DC_REPAIR_OPT, false, "only repair against nodes in the same datacenter");
}
public NodeCmd(NodeProbe probe)
{
this.probe = probe;
}
private enum NodeCommand
{
CFHISTOGRAMS,
CFSTATS,
CLEANUP,
CLEARSNAPSHOT,
COMPACT,
COMPACTIONSTATS,
DECOMMISSION,
DISABLEGOSSIP,
DISABLETHRIFT,
DRAIN,
ENABLEGOSSIP,
ENABLETHRIFT,
FLUSH,
GETCOMPACTIONTHRESHOLD,
GETENDPOINTS,
GETSSTABLES,
GOSSIPINFO,
INFO,
INVALIDATEKEYCACHE,
INVALIDATEROWCACHE,
JOIN,
MOVE,
NETSTATS,
PROXYHISTOGRAMS,
REBUILD,
REFRESH,
REMOVETOKEN,
REMOVENODE,
REPAIR,
RING,
SCRUB,
SETCACHECAPACITY,
SETCOMPACTIONTHRESHOLD,
SETCOMPACTIONTHROUGHPUT,
SETSTREAMTHROUGHPUT,
SETTRACEPROBABILITY,
SNAPSHOT,
STATUS,
STATUSTHRIFT,
STOP,
TPSTATS,
UPGRADESSTABLES,
VERSION,
DESCRIBERING,
RANGEKEYSAMPLE,
REBUILD_INDEX,
RESETLOCALSCHEMA,
PREDICTCONSISTENCY
}
/**
* Prints usage information to stdout.
*/
private static void printUsage()
{
HelpFormatter hf = new HelpFormatter();
StringBuilder header = new StringBuilder(512);
header.append("\nAvailable commands\n");
final NodeToolHelp ntHelp = loadHelp();
for(NodeToolHelp.NodeToolCommand cmd : ntHelp.commands)
addCmdHelp(header, cmd);
String usage = String.format("java %s --host <arg> <command>%n", NodeCmd.class.getName());
hf.printHelp(usage, "", options, "");
System.out.println(header.toString());
}
private static NodeToolHelp loadHelp()
{
final InputStream is = NodeCmd.class.getClassLoader().getResourceAsStream("org/apache/cassandra/tools/NodeToolHelp.yaml");
assert is != null;
try
{
final Constructor constructor = new Constructor(NodeToolHelp.class);
TypeDescription desc = new TypeDescription(NodeToolHelp.class);
desc.putListPropertyType("commands", NodeToolHelp.NodeToolCommand.class);
final Yaml yaml = new Yaml(new Loader(constructor));
return (NodeToolHelp)yaml.load(is);
}
finally
{
FileUtils.closeQuietly(is);
}
}
private static void addCmdHelp(StringBuilder sb, NodeToolHelp.NodeToolCommand cmd)
{
sb.append(" ").append(cmd.name);
// Ghetto indentation (trying, but not too hard, to not look too bad)
if (cmd.name.length() <= 20)
for (int i = cmd.name.length(); i < 22; ++i) sb.append(" ");
sb.append(" - ").append(cmd.help);
}
/**
* Write a textual representation of the Cassandra ring.
*
* @param outs
* the stream to write to
*/
public void printRing(PrintStream outs, String keyspace)
{
Map<String, String> tokensToEndpoints = probe.getTokenToEndpointMap();
LinkedHashMultimap<String, String> endpointsToTokens = LinkedHashMultimap.create();
for (Map.Entry<String, String> entry : tokensToEndpoints.entrySet())
endpointsToTokens.put(entry.getValue(), entry.getKey());
String format = "%-16s%-12s%-7s%-8s%-16s%-20s%-44s%n";
// Calculate per-token ownership of the ring
Map<InetAddress, Float> ownerships;
boolean keyspaceSelected;
try
{
ownerships = probe.effectiveOwnership(keyspace);
keyspaceSelected = true;
}
catch (ConfigurationException ex)
{
ownerships = probe.getOwnership();
outs.printf("Note: Ownership information does not include topology; for complete information, specify a keyspace%n");
keyspaceSelected = false;
}
try
{
outs.println();
Map<String, Map<InetAddress, Float>> perDcOwnerships = Maps.newLinkedHashMap();
// get the different datasets and map to tokens
for (Map.Entry<InetAddress, Float> ownership : ownerships.entrySet())
{
String dc = probe.getEndpointSnitchInfoProxy().getDatacenter(ownership.getKey().getHostAddress());
if (!perDcOwnerships.containsKey(dc))
perDcOwnerships.put(dc, new LinkedHashMap<InetAddress, Float>());
perDcOwnerships.get(dc).put(ownership.getKey(), ownership.getValue());
}
for (Map.Entry<String, Map<InetAddress, Float>> entry : perDcOwnerships.entrySet())
printDc(outs, format, entry.getKey(), endpointsToTokens, keyspaceSelected, entry.getValue());
}
catch (UnknownHostException e)
{
throw new RuntimeException(e);
}
}
private void printDc(PrintStream outs, String format, String dc, LinkedHashMultimap<String, String> endpointsToTokens,
boolean keyspaceSelected, Map<InetAddress, Float> filteredOwnerships)
{
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();
outs.println("Datacenter: " + dc);
outs.println("==========");
// get the total amount of replicas for this dc and the last token in this dc's ring
List<String> tokens = new ArrayList<String>();
float totalReplicas = 0f;
String lastToken = "";
for (Map.Entry<InetAddress, Float> entry : filteredOwnerships.entrySet())
{
tokens.addAll(endpointsToTokens.get(entry.getKey().getHostAddress()));
lastToken = tokens.get(tokens.size() - 1);
totalReplicas += entry.getValue();
}
if (keyspaceSelected)
outs.print("Replicas: " + (int) totalReplicas + "\n\n");
outs.printf(format, "Address", "Rack", "Status", "State", "Load", "Owns", "Token");
if (filteredOwnerships.size() > 1)
outs.printf(format, "", "", "", "", "", "", lastToken);
else
outs.println();
for (Map.Entry<InetAddress, Float> entry : filteredOwnerships.entrySet())
{
String endpoint = entry.getKey().getHostAddress();
for (String token : endpointsToTokens.get(endpoint))
{
String rack;
try
{
rack = probe.getEndpointSnitchInfoProxy().getRack(endpoint);
}
catch (UnknownHostException e)
{
rack = "Unknown";
}
String status = liveNodes.contains(endpoint)
? "Up"
: deadNodes.contains(endpoint)
? "Down"
: "?";
String state = "Normal";
if (joiningNodes.contains(endpoint))
state = "Joining";
else if (leavingNodes.contains(endpoint))
state = "Leaving";
else if (movingNodes.contains(endpoint))
state = "Moving";
String load = loadMap.containsKey(endpoint)
? loadMap.get(endpoint)
: "?";
String owns = new DecimalFormat("##0.00%").format(entry.getValue());
outs.printf(format, endpoint, rack, status, state, load, owns, token);
}
}
outs.println();
}
private class ClusterStatus
{
String kSpace = null, format = null;
Collection<String> joiningNodes, leavingNodes, movingNodes, liveNodes, unreachableNodes;
Map<String, String> loadMap, hostIDMap, tokensToEndpoints;
EndpointSnitchInfoMBean epSnitchInfo;
PrintStream outs;
ClusterStatus(PrintStream outs, String kSpace)
{
this.kSpace = kSpace;
this.outs = outs;
joiningNodes = probe.getJoiningNodes();
leavingNodes = probe.getLeavingNodes();
movingNodes = probe.getMovingNodes();
loadMap = probe.getLoadMap();
tokensToEndpoints = probe.getTokenToEndpointMap();
liveNodes = probe.getLiveNodes();
unreachableNodes = probe.getUnreachableNodes();
hostIDMap = probe.getHostIdMap();
epSnitchInfo = probe.getEndpointSnitchInfoProxy();
}
private void printStatusLegend()
{
outs.println("Status=Up/Down");
outs.println("|/ State=Normal/Leaving/Joining/Moving");
}
private Map<String, Map<InetAddress, Float>> getOwnershipByDc(Map<InetAddress, Float> ownerships)
throws UnknownHostException
{
Map<String, Map<InetAddress, Float>> ownershipByDc = Maps.newLinkedHashMap();
EndpointSnitchInfoMBean epSnitchInfo = probe.getEndpointSnitchInfoProxy();
for (Map.Entry<InetAddress, Float> ownership : ownerships.entrySet())
{
String dc = epSnitchInfo.getDatacenter(ownership.getKey().getHostAddress());
if (!ownershipByDc.containsKey(dc))
ownershipByDc.put(dc, new LinkedHashMap<InetAddress, Float>());
ownershipByDc.get(dc).put(ownership.getKey(), ownership.getValue());
}
return ownershipByDc;
}
private String getFormat(boolean hasEffectiveOwns, boolean isTokenPerNode)
{
if (format == null)
{
StringBuffer buf = new StringBuffer();
buf.append("%s%s %-16s %-9s "); // status, address, and load
if (!isTokenPerNode) buf.append("%-6s "); // "Tokens"
if (hasEffectiveOwns) buf.append("%-16s "); // "Owns (effective)"
else buf.append("%-5s "); // "Owns
buf.append("%-36s "); // Host ID
if (isTokenPerNode) buf.append("%-39s "); // token
buf.append("%s%n"); // "Rack"
format = buf.toString();
}
return format;
}
private void printNode(String endpoint, Float owns, Map<InetAddress, Float> ownerships,
boolean hasEffectiveOwns, boolean isTokenPerNode) throws UnknownHostException
{
String status, state, load, strOwns, hostID, rack, fmt;
fmt = getFormat(hasEffectiveOwns, isTokenPerNode);
if (liveNodes.contains(endpoint)) status = "U";
else if (unreachableNodes.contains(endpoint)) status = "D";
else status = "?";
if (joiningNodes.contains(endpoint)) state = "J";
else if (leavingNodes.contains(endpoint)) state = "L";
else if (movingNodes.contains(endpoint)) state = "M";
else state = "N";
load = loadMap.containsKey(endpoint) ? loadMap.get(endpoint) : "?";
strOwns = new DecimalFormat("##0.0%").format(ownerships.get(InetAddress.getByName(endpoint)));
hostID = hostIDMap.get(endpoint);
rack = epSnitchInfo.getRack(endpoint);
if (isTokenPerNode)
{
outs.printf(fmt, status, state, endpoint, load, strOwns, hostID, probe.getTokens(endpoint).get(0), rack);
}
else
{
int tokens = probe.getTokens(endpoint).size();
outs.printf(fmt, status, state, endpoint, load, tokens, strOwns, hostID, rack);
}
}
private void printNodesHeader(boolean hasEffectiveOwns, boolean isTokenPerNode)
{
String fmt = getFormat(hasEffectiveOwns, isTokenPerNode);
String owns = hasEffectiveOwns ? "Owns (effective)" : "Owns";
if (isTokenPerNode)
outs.printf(fmt, "-", "-", "Address", "Load", owns, "Host ID", "Token", "Rack");
else
outs.printf(fmt, "-", "-", "Address", "Load", "Tokens", owns, "Host ID", "Rack");
}
void print() throws UnknownHostException
{
Map<InetAddress, Float> ownerships;
boolean hasEffectiveOwns = false, isTokenPerNode = true;
try
{
ownerships = probe.effectiveOwnership(kSpace);
hasEffectiveOwns = true;
}
catch (ConfigurationException e)
{
ownerships = probe.getOwnership();
}
// More tokens then nodes (aka vnodes)?
if (new HashSet<String>(tokensToEndpoints.values()).size() < tokensToEndpoints.keySet().size())
isTokenPerNode = false;
// Datacenters
for (Map.Entry<String, Map<InetAddress, Float>> dc : getOwnershipByDc(ownerships).entrySet())
{
String dcHeader = String.format("Datacenter: %s%n", dc.getKey());
outs.printf(dcHeader);
for (int i=0; i < (dcHeader.length() - 1); i++) outs.print('=');
outs.println();
printStatusLegend();
printNodesHeader(hasEffectiveOwns, isTokenPerNode);
// Nodes
for (Map.Entry<InetAddress, Float> entry : dc.getValue().entrySet())
printNode(entry.getKey().getHostAddress(),
entry.getValue(),
ownerships,
hasEffectiveOwns,
isTokenPerNode);
}
}
}
/** Writes a table of cluster-wide node information to a PrintStream
* @throws UnknownHostException */
public void printClusterStatus(PrintStream outs, String keyspace) throws UnknownHostException
{
new ClusterStatus(outs, keyspace).print();
}
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, ToolCommandLine cmd)
{
boolean gossipInitialized = probe.isInitialized();
List<String> toks = probe.getTokens();
// If there is just 1 token, print it now like we always have, otherwise,
// require that -T/--tokens be passed (that output is potentially verbose).
if (toks.size() == 1)
outs.printf("%-17s: %s%n", "Token", toks.get(0));
else if (!cmd.hasOption(TOKENS_OPT.left))
outs.printf("%-17s: (invoke with -T/--tokens to see all %d tokens)%n", "Token", toks.size());
outs.printf("%-17s: %s%n", "ID", probe.getLocalHostId());
outs.printf("%-17s: %s%n", "Gossip active", gossipInitialized);
outs.printf("%-17s: %s%n", "Thrift active", probe.isThriftServerRunning());
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());
CacheServiceMBean cacheService = probe.getCacheServiceMBean();
// Key Cache: Hits, Requests, RecentHitRate, SavePeriodInSeconds
outs.printf("%-17s: size %d (bytes), capacity %d (bytes), %d hits, %d requests, %.3f recent hit rate, %d save period in seconds%n",
"Key Cache",
cacheService.getKeyCacheSize(),
cacheService.getKeyCacheCapacityInBytes(),
cacheService.getKeyCacheHits(),
cacheService.getKeyCacheRequests(),
cacheService.getKeyCacheRecentHitRate(),
cacheService.getKeyCacheSavePeriodInSeconds());
// Row Cache: Hits, Requests, RecentHitRate, SavePeriodInSeconds
outs.printf("%-17s: size %d (bytes), capacity %d (bytes), %d hits, %d requests, %.3f recent hit rate, %d save period in seconds%n",
"Row Cache",
cacheService.getRowCacheSize(),
cacheService.getRowCacheCapacityInBytes(),
cacheService.getRowCacheHits(),
cacheService.getRowCacheRequests(),
cacheService.getRowCacheRecentHitRate(),
cacheService.getRowCacheSavePeriodInSeconds());
if (toks.size() > 1 && cmd.hasOption(TOKENS_OPT.left))
{
for (String tok : toks)
outs.printf("%-17s: %s%n", "Token", tok);
}
}
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)
{
int compactionThroughput = probe.getCompactionThroughput();
CompactionManagerMBean cm = probe.getCompactionManagerProxy();
outs.println("pending tasks: " + cm.getPendingTasks());
if (cm.getCompactions().size() > 0)
outs.printf("%25s%16s%16s%16s%16s%10s%10s%n", "compaction type", "keyspace", "column family", "completed", "total", "unit", "progress");
long remainingBytes = 0;
for (Map<String, String> c : cm.getCompactions())
{
String percentComplete = new Long(c.get("total")) == 0
? "n/a"
: new DecimalFormat("0.00").format((double) new Long(c.get("completed")) / new Long(c.get("total")) * 100) + "%";
outs.printf("%25s%16s%16s%16s%16s%10s%10s%n", c.get("taskType"), c.get("keyspace"), c.get("columnfamily"), c.get("completed"), c.get("total"), c.get("unit"), percentComplete);
if (c.get("taskType").equals(OperationType.COMPACTION.toString()))
remainingBytes += (new Long(c.get("total")) - new Long(c.get("completed")));
}
long remainingTimeInSecs = compactionThroughput == 0 || remainingBytes == 0
? -1
: (remainingBytes) / (long) (1024L * 1024L * compactionThroughput);
String remainingTime = remainingTimeInSecs < 0
? "n/a"
: String.format("%dh%02dm%02ds", remainingTimeInSecs / 3600, (remainingTimeInSecs % 3600) / 60, (remainingTimeInSecs % 60));
outs.printf("%25s%10s%n", "Active compaction remaining time : ", remainingTime);
}
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());
int[] leveledSStables = cfstore.getSSTableCountPerLevel();
if (leveledSStables != null)
{
outs.print("\t\tSSTables in each level: [");
for (int level = 0; level < leveledSStables.length; level++)
{
int count = leveledSStables[level];
outs.print(count);
long maxCount = 4L; // for L0
if (level > 0)
maxCount = (long) Math.pow(10, level);
// show max threshold for level when exceeded
if (count > maxCount)
outs.print("/" + maxCount);
if (level < leveledSStables.length - 1)
outs.print(", ");
else
outs.println("]");
}
}
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());
outs.println("\t\tBloom Filter False Positives: " + cfstore.getBloomFilterFalsePositives());
outs.println("\t\tBloom Filter False Ratio: " + String.format("%01.5f", cfstore.getRecentBloomFilterFalseRatio()));
outs.println("\t\tBloom Filter Space Used: " + cfstore.getBloomFilterDiskSpaceUsed());
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] : "0"),
(i < rwlh.length ? rwlh[i] : "0"),
(i < rrlh.length ? rrlh[i] : "0"),
(i < ersh.length ? ersh[i] : "0"),
(i < ecch.length ? ecch[i] : "0")));
}
}
private void printProxyHistograms(PrintStream output)
{
StorageProxyMBean sp = this.probe.getSpProxy();
long[] offsets = new EstimatedHistogram().getBucketOffsets();
long[] rrlh = sp.getRecentReadLatencyHistogramMicros();
long[] rwlh = sp.getRecentWriteLatencyHistogramMicros();
long[] rrnglh = sp.getRecentRangeLatencyHistogramMicros();
output.println("proxy histograms");
output.println(String.format("%-10s%18s%18s%18s",
"Offset", "Read Latency", "Write Latency", "Range Latency"));
for (int i = 0; i < offsets.length; i++)
{
output.println(String.format("%-10d%18s%18s%18s",
offsets[i],
(i < rrlh.length ? rrlh[i] : "0"),
(i < rwlh.length ? rwlh[i] : "0"),
(i < rrnglh.length ? rrnglh[i] : "0")));
}
}
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 printSSTables(String keyspace, String cf, String key, PrintStream output)
{
List<String> sstables = this.probe.getSSTables(keyspace, cf, key);
for (String sstable : sstables)
{
output.println(sstable);
}
}
private void printIsThriftServerRunning(PrintStream outs)
{
outs.println(probe.isThriftServerRunning() ? "running" : "not running");
}
public void predictConsistency(Integer replicationFactor,
Integer timeAfterWrite,
Integer numVersions,
Float percentileLatency,
PrintStream output)
{
PBSPredictorMBean predictorMBean = probe.getPBSPredictorMBean();
for(int r = 1; r <= replicationFactor; ++r) {
for(int w = 1; w <= replicationFactor; ++w) {
if(w+r > replicationFactor+1)
continue;
try {
PBSPredictionResult result = predictorMBean.doPrediction(replicationFactor,
r,
w,
timeAfterWrite,
numVersions,
percentileLatency);
if(r == 1 && w == 1) {
output.printf("%dms after a given write, with maximum version staleness of k=%d%n", timeAfterWrite, numVersions);
}
output.printf("N=%d, R=%d, W=%d%n", replicationFactor, r, w);
output.printf("Probability of consistent reads: %f%n", result.getConsistencyProbability());
output.printf("Average read latency: %fms (%.3fth %%ile %dms)%n", result.getAverageReadLatency(),
result.getPercentileReadLatencyPercentile()*100,
result.getPercentileReadLatencyValue());
output.printf("Average write latency: %fms (%.3fth %%ile %dms)%n%n", result.getAverageWriteLatency(),
result.getPercentileWriteLatencyPercentile()*100,
result.getPercentileWriteLatencyValue());
} catch (Exception e) {
System.out.println(e.getMessage());
e.printStackTrace();
return;
}
}
}
}
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.hasOption(HOST_OPT.left) ? cmd.getOptionValue(HOST_OPT.left) : DEFAULT_HOST;
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)
{
Throwable inner = findInnermostThrowable(ioe);
if (inner instanceof ConnectException)
{
System.err.printf("Failed to connect to '%s:%d': %s%n", host, port, inner.getMessage());
System.exit(1);
}
else if (inner instanceof UnknownHostException)
{
System.err.printf("Cannot resolve '%s': unknown host%n", host);
System.exit(1);
}
else
{
err(ioe, "Error connecting to remote JMX agent!");
}
}
try
{
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();
String tag;
String columnFamilyName = null;
switch (command)
{
case RING :
if (arguments.length > 0) { nodeCmd.printRing(System.out, arguments[0]); }
else { nodeCmd.printRing(System.out, null); };
break;
case INFO : nodeCmd.printInfo(System.out, cmd); break;
case CFSTATS : nodeCmd.printColumnFamilyStats(System.out); 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 RESETLOCALSCHEMA: probe.resetLocalSchema(); break;
case STATUS :
if (arguments.length > 0) nodeCmd.printClusterStatus(System.out, arguments[0]);
else nodeCmd.printClusterStatus(System.out, null);
break;
case DECOMMISSION :
if (arguments.length > 0)
{
System.err.println("Decommission will decommission the node you are connected to and does not take arguments!");
System.exit(1);
}
probe.decommission();
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 :
columnFamilyName = cmd.getOptionValue(SNAPSHOT_COLUMNFAMILY_OPT.left);
/* FALL THRU */
case CLEARSNAPSHOT :
tag = cmd.getOptionValue(TAG_OPT.left);
handleSnapshots(command, tag, arguments, columnFamilyName, probe);
break;
case MOVE :
if (arguments.length != 1) { badUse("Missing token argument for move."); }
try
{
probe.move(arguments[0]);
}
catch (UnsupportedOperationException uoerror)
{
System.err.println(uoerror.getMessage());
System.exit(1);
}
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.parseInt(arguments[0]));
break;
case SETSTREAMTHROUGHPUT :
if (arguments.length != 1) { badUse("Missing value argument."); }
probe.setStreamThroughput(Integer.parseInt(arguments[0]));
break;
case SETTRACEPROBABILITY :
if (arguments.length != 1) { badUse("Missing value argument."); }
probe.setTraceProbability(Double.parseDouble(arguments[0]));
break;
case REBUILD :
if (arguments.length > 1) { badUse("Too many arguments."); }
probe.rebuild(arguments.length == 1 ? arguments[0] : null);
break;
case REMOVETOKEN :
System.err.println("Warn: removetoken is deprecated, please use removenode instead");
case REMOVENODE :
if (arguments.length != 1) { badUse("Missing an argument for removenode (either status, force, or an ID)"); }
else if (arguments[0].equals("status")) { nodeCmd.printRemovalStatus(System.out); }
else if (arguments[0].equals("force")) { nodeCmd.printRemovalStatus(System.out); probe.forceRemoveCompletion(); }
else { probe.removeNode(arguments[0]); }
break;
case INVALIDATEKEYCACHE :
probe.invalidateKeyCache();
break;
case INVALIDATEROWCACHE :
probe.invalidateRowCache();
break;
case CLEANUP :
case COMPACT :
case REPAIR :
case FLUSH :
case SCRUB :
case UPGRADESSTABLES :
optionalKSandCFs(command, cmd, 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 != 2) { badUse("setcachecapacity requires key-cache-capacity, and row-cache-capacity args."); }
probe.setCacheCapacities(Integer.parseInt(arguments[0]), Integer.parseInt(arguments[1]));
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 PROXYHISTOGRAMS :
if (arguments.length != 0) { badUse("proxyhistograms does not take arguments"); }
nodeCmd.printProxyHistograms(System.out);
break;
case GETSSTABLES:
if (arguments.length != 3) { badUse("getsstables requires ks, cf and key args"); }
nodeCmd.printSSTables(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;
case REBUILD_INDEX:
if (arguments.length < 2) { badUse("rebuild_index requires ks and cf args"); }
if (arguments.length >= 3)
probe.rebuildIndex(arguments[0], arguments[1], arguments[2].split(","));
else
probe.rebuildIndex(arguments[0], arguments[1]);
break;
case GOSSIPINFO : nodeCmd.printGossipInfo(System.out); break;
case STOP:
if (arguments.length != 1) { badUse("stop requires a type."); }
probe.stop(arguments[0].toUpperCase());
break;
case DESCRIBERING :
if (arguments.length != 1) { badUse("Missing keyspace argument for describering."); }
nodeCmd.printDescribeRing(arguments[0], System.out);
break;
case RANGEKEYSAMPLE :
nodeCmd.printRangeKeySample(System.out);
break;
case PREDICTCONSISTENCY:
if (arguments.length < 2) { badUse("Requires replication factor and time"); }
int numVersions = 1;
if (arguments.length == 3) { numVersions = Integer.parseInt(arguments[2]); }
float percentileLatency = .999f;
if (arguments.length == 4) { percentileLatency = Float.parseFloat(arguments[3]); }
nodeCmd.predictConsistency(Integer.parseInt(arguments[0]),
Integer.parseInt(arguments[1]),
numVersions,
percentileLatency,
System.out);
break;
default :
throw new RuntimeException("Unreachable code.");
}
}
finally
{
if (probe != null)
{
try
{
probe.close();
}
catch (IOException ex)
{
// swallow the exception so the user will see the real one.
}
}
}
System.exit(0);
}
private static Throwable findInnermostThrowable(Throwable ex)
{
Throwable inner = ex.getCause();
return inner == null ? ex : findInnermostThrowable(inner);
}
private void printDescribeRing(String keyspaceName, PrintStream out)
{
out.println("Schema Version:" + probe.getSchemaVersion());
out.println("TokenRange: ");
try
{
for (String tokenRangeString : probe.describeRing(keyspaceName))
{
out.println("\t" + tokenRangeString);
}
}
catch (InvalidRequestException e)
{
err(e, e.getMessage());
}
}
private void printRangeKeySample(PrintStream outs)
{
outs.println("RangeKeySample: ");
List<String> tokenStrings = this.probe.sampleKeyRange();
for (String tokenString : tokenStrings)
{
outs.println("\t" + tokenString);
}
}
private void printGossipInfo(PrintStream out) {
out.println(probe.getGossipInfo());
}
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, String columnFamily, 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 ");
}
if (columnFamily != null)
{
System.out.print("and column family: " + columnFamily);
}
System.out.println();
switch (nc)
{
case SNAPSHOT :
if (tag == null || tag.equals(""))
tag = new Long(System.currentTimeMillis()).toString();
probe.takeSnapshot(tag, columnFamily, keyspaces);
System.out.println("Snapshot directory: " + tag);
break;
case CLEARSNAPSHOT :
probe.clearSnapshot(tag, keyspaces);
break;
}
}
private static void optionalKSandCFs(NodeCommand nc, ToolCommandLine cmd, 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 :
boolean snapshot = cmd.hasOption(SNAPSHOT_REPAIR_OPT.left);
boolean localDC = cmd.hasOption(LOCAL_DC_REPAIR_OPT.left);
if (cmd.hasOption(PRIMARY_RANGE_OPT.left))
probe.forceTableRepairPrimaryRange(keyspace, snapshot, localDC, columnFamilies);
else
probe.forceTableRepair(keyspace, snapshot, localDC, 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(Table.SYSTEM_KS)) { 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;
case UPGRADESSTABLES :
try { probe.upgradeSSTables(keyspace, columnFamilies); }
catch (ExecutionException ee) { err(ee, "Error occured while upgrading the sstables for 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++)
{
String parm = (String) params.get(i);
// why? look at CASSANDRA-4808
if (parm.startsWith("\\"))
parm = parm.substring(1);
toReturn[i - 1] = parm;
}
return toReturn;
}
}
}