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Thu, Jul 11, 22:18

Client.java
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/**
* Copyright (c) 2010 Yahoo! Inc. All rights reserved.
*
* Licensed 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. See accompanying
* LICENSE file.
*/
package com.yahoo.ycsb;
import java.io.*;
import java.text.DecimalFormat;
import java.util.*;
//import org.apache.log4j.BasicConfigurator;
/**
* A thread to periodically show the status of the experiment, to reassure you that progress is being made.
*
* @author cooperb
*
*/
class StatusThread extends Thread
{
Vector<Thread> _threads;
String _label;
boolean _standardstatus;
/**
* The interval for reporting status.
*/
public static final long sleeptime=10000;
public StatusThread(Vector<Thread> threads, String label, boolean standardstatus)
{
_threads=threads;
_label=label;
_standardstatus=standardstatus;
}
/**
* Run and periodically report status.
*/
public void run()
{
long st=System.currentTimeMillis();
long lasten=st;
long lasttotalops=0;
boolean alldone;
do
{
alldone=true;
int totalops=0;
//terminate this thread when all the worker threads are done
for (Thread t : _threads)
{
if (t.getState()!=Thread.State.TERMINATED)
{
alldone=false;
}
ClientThread ct=(ClientThread)t;
totalops+=ct.getOpsDone();
}
long en=System.currentTimeMillis();
long interval=en-st;
//double throughput=1000.0*((double)totalops)/((double)interval);
double curthroughput=1000.0*(((double)(totalops-lasttotalops))/((double)(en-lasten)));
lasttotalops=totalops;
lasten=en;
DecimalFormat d = new DecimalFormat("#.##");
if (totalops==0)
{
System.err.println(_label+" "+(interval/1000)+" sec: "+totalops+" operations; "+Measurements.getMeasurements().getSummary());
}
else
{
System.err.println(_label+" "+(interval/1000)+" sec: "+totalops+" operations; "+d.format(curthroughput)+" current ops/sec; "+Measurements.getMeasurements().getSummary());
}
if (_standardstatus)
{
if (totalops==0)
{
System.out.println(_label+" "+(interval/1000)+" sec: "+totalops+" operations; "+Measurements.getMeasurements().getSummary());
}
else
{
System.out.println(_label+" "+(interval/1000)+" sec: "+totalops+" operations; "+d.format(curthroughput)+" current ops/sec; "+Measurements.getMeasurements().getSummary());
}
}
try
{
sleep(sleeptime);
}
catch (InterruptedException e)
{
//do nothing
}
}
while (!alldone);
}
}
/**
* A thread for executing transactions or data inserts to the database.
*
* @author cooperb
*
*/
class ClientThread extends Thread
{
static Random random=new Random();
DB _db;
boolean _dotransactions;
Workload _workload;
int _opcount;
double _target;
int _opsdone;
int _threadid;
int _threadcount;
Object _workloadstate;
Properties _props;
/**
* Constructor.
*
* @param db the DB implementation to use
* @param dotransactions true to do transactions, false to insert data
* @param workload the workload to use
* @param threadid the id of this thread
* @param threadcount the total number of threads
* @param props the properties defining the experiment
* @param opcount the number of operations (transactions or inserts) to do
* @param targetperthreadperms target number of operations per thread per ms
*/
public ClientThread(DB db, boolean dotransactions, Workload workload, int threadid, int threadcount, Properties props, int opcount, double targetperthreadperms)
{
//TODO: consider removing threadcount and threadid
_db=db;
_dotransactions=dotransactions;
_workload=workload;
_opcount=opcount;
_opsdone=0;
_target=targetperthreadperms;
_threadid=threadid;
_threadcount=threadcount;
_props=props;
//System.out.println("Interval = "+interval);
}
public int getOpsDone()
{
return _opsdone;
}
public void run()
{
try
{
_db.init();
}
catch (DBException e)
{
e.printStackTrace();
e.printStackTrace(System.out);
return;
}
try
{
_workloadstate=_workload.initThread(_props,_threadid,_threadcount);
}
catch (WorkloadException e)
{
e.printStackTrace();
e.printStackTrace(System.out);
return;
}
//spread the thread operations out so they don't all hit the DB at the same time
try
{
//GH issue 4 - throws exception if _target>1 because random.nextInt argument must be >0
//and the sleep() doesn't make sense for granularities < 1 ms anyway
if ( (_target>0) && (_target<=1.0) )
{
sleep(random.nextInt((int)(1.0/_target)));
}
}
catch (InterruptedException e)
{
//do nothing
}
try
{
if (_dotransactions)
{
long st=System.currentTimeMillis();
while ( (_opcount==0) || (_opsdone<_opcount) )
{
if (!_workload.doTransaction(_db,_workloadstate))
{
break;
}
_opsdone++;
//throttle the operations
if (_target>0)
{
//this is more accurate than other throttling approaches we have tried,
//like sleeping for (1/target throughput)-operation latency,
//because it smooths timing inaccuracies (from sleep() taking an int,
//current time in millis) over many operations
while (System.currentTimeMillis()-st<((double)_opsdone)/_target)
{
try
{
sleep(1);
}
catch (InterruptedException e)
{
//do nothing
}
}
}
}
}
else
{
long st=System.currentTimeMillis();
while ( (_opcount==0) || (_opsdone<_opcount) )
{
if (!_workload.doInsert(_db,_workloadstate))
{
break;
}
_opsdone++;
//throttle the operations
if (_target>0)
{
//this is more accurate than other throttling approaches we have tried,
//like sleeping for (1/target throughput)-operation latency,
//because it smooths timing inaccuracies (from sleep() taking an int,
//current time in millis) over many operations
while (System.currentTimeMillis()-st<((double)_opsdone)/_target)
{
try
{
sleep(1);
}
catch (InterruptedException e)
{
//do nothing
}
}
}
}
}
}
catch (Exception e)
{
e.printStackTrace();
e.printStackTrace(System.out);
System.exit(0);
}
try
{
_db.cleanup();
}
catch (DBException e)
{
e.printStackTrace();
e.printStackTrace(System.out);
return;
}
}
}
/**
* Main class for executing YCSB.
*/
public class Client
{
public static final String OPERATION_COUNT_PROPERTY="operationcount";
public static final String RECORD_COUNT_PROPERTY="recordcount";
public static final String WORKLOAD_PROPERTY="workload";
/**
* Indicates how many inserts to do, if less than recordcount. Useful for partitioning
* the load among multiple servers, if the client is the bottleneck. Additionally, workloads
* should support the "insertstart" property, which tells them which record to start at.
*/
public static final String INSERT_COUNT_PROPERTY="insertcount";
public static void usageMessage()
{
System.out.println("Usage: java com.yahoo.ycsb.Client [options]");
System.out.println("Options:");
System.out.println(" -threads n: execute using n threads (default: 1) - can also be specified as the \n" +
" \"threadcount\" property using -p");
System.out.println(" -target n: attempt to do n operations per second (default: unlimited) - can also\n" +
" be specified as the \"target\" property using -p");
System.out.println(" -load: run the loading phase of the workload");
System.out.println(" -t: run the transactions phase of the workload (default)");
System.out.println(" -db dbname: specify the name of the DB to use (default: com.yahoo.ycsb.BasicDB) - \n" +
" can also be specified as the \"db\" property using -p");
System.out.println(" -P propertyfile: load properties from the given file. Multiple files can");
System.out.println(" be specified, and will be processed in the order specified");
System.out.println(" -p name=value: specify a property to be passed to the DB and workloads;");
System.out.println(" multiple properties can be specified, and override any");
System.out.println(" values in the propertyfile");
System.out.println(" -s: show status during run (default: no status)");
System.out.println(" -l label: use label for status (e.g. to label one experiment out of a whole batch)");
System.out.println("");
System.out.println("Required properties:");
System.out.println(" "+WORKLOAD_PROPERTY+": the name of the workload class to use (e.g. com.yahoo.ycsb.workloads.CoreWorkload)");
System.out.println("");
System.out.println("To run the transaction phase from multiple servers, start a separate client on each.");
System.out.println("To run the load phase from multiple servers, start a separate client on each; additionally,");
System.out.println("use the \"insertcount\" and \"insertstart\" properties to divide up the records to be inserted");
}
public static boolean checkRequiredProperties(Properties props)
{
if (props.getProperty(WORKLOAD_PROPERTY)==null)
{
System.out.println("Missing property: "+WORKLOAD_PROPERTY);
return false;
}
return true;
}
@SuppressWarnings("unchecked")
public static void main(String[] args)
{
String dbname;
Properties props=new Properties();
Properties fileprops=new Properties();
boolean dotransactions=true;
int threadcount=1;
int target=0;
PrintStream out=System.out;
boolean status=false;
String label="";
//parse arguments
int argindex=0;
if (args.length==0)
{
usageMessage();
System.exit(0);
}
while (args[argindex].startsWith("-"))
{
if (args[argindex].compareTo("-threads")==0)
{
argindex++;
if (argindex>args.length)
{
usageMessage();
System.exit(0);
}
int tcount=Integer.parseInt(args[argindex]);
props.setProperty("threadcount", tcount+"");
argindex++;
}
else if (args[argindex].compareTo("-target")==0)
{
argindex++;
if (argindex>args.length)
{
usageMessage();
System.exit(0);
}
int ttarget=Integer.parseInt(args[argindex]);
props.setProperty("target", ttarget+"");
argindex++;
}
else if (args[argindex].compareTo("-load")==0)
{
dotransactions=false;
argindex++;
}
else if (args[argindex].compareTo("-t")==0)
{
dotransactions=true;
argindex++;
}
else if (args[argindex].compareTo("-s")==0)
{
status=true;
argindex++;
}
else if (args[argindex].compareTo("-db")==0)
{
argindex++;
if (argindex>args.length)
{
usageMessage();
System.exit(0);
}
props.setProperty("db",args[argindex]);
argindex++;
}
else if (args[argindex].compareTo("-l")==0)
{
argindex++;
if (argindex>args.length)
{
usageMessage();
System.exit(0);
}
label=args[argindex];
argindex++;
}
else if (args[argindex].compareTo("-P")==0)
{
argindex++;
if (argindex>args.length)
{
usageMessage();
System.exit(0);
}
String propfile=args[argindex];
argindex++;
Properties myfileprops=new Properties();
try
{
myfileprops.load(new FileInputStream(propfile));
}
catch (IOException e)
{
System.out.println(e.getMessage());
System.exit(0);
}
for (String prop : myfileprops.stringPropertyNames())
{
fileprops.setProperty(prop,myfileprops.getProperty(prop));
}
}
else if (args[argindex].compareTo("-p")==0)
{
argindex++;
if (argindex>args.length)
{
usageMessage();
System.exit(0);
}
int eq=args[argindex].indexOf('=');
if (eq<0)
{
usageMessage();
System.exit(0);
}
String name=args[argindex].substring(0,eq);
String value=args[argindex].substring(eq+1);
props.put(name,value);
//System.out.println("["+name+"]=["+value+"]");
argindex++;
}
else
{
System.out.println("Unknown option "+args[argindex]);
usageMessage();
System.exit(0);
}
if (argindex>=args.length)
{
break;
}
}
if (argindex!=args.length)
{
usageMessage();
System.exit(0);
}
//set up logging
//BasicConfigurator.configure();
//overwrite file properties with properties from the command line
for (String prop : props.stringPropertyNames())
{
fileprops.setProperty(prop,props.getProperty(prop));
}
props=fileprops;
if (!checkRequiredProperties(props))
{
System.exit(0);
}
//get number of threads, target and db
threadcount=Integer.parseInt(props.getProperty("threadcount","1"));
dbname=props.getProperty("db","com.yahoo.ycsb.BasicDB");
target=Integer.parseInt(props.getProperty("target","0"));
//compute the target throughput
double targetperthreadperms=-1;
if (target>0)
{
double targetperthread=((double)target)/((double)threadcount);
targetperthreadperms=targetperthread/1000.0;
}
System.out.println("YCSB Client 0.1");
System.out.print("Command line:");
for (int i=0; i<args.length; i++)
{
System.out.print(" "+args[i]);
}
System.out.println();
System.err.println("Loading workload...");
//show a warning message that creating the workload is taking a while
//but only do so if it is taking longer than 2 seconds
//(showing the message right away if the setup wasn't taking very long was confusing people)
Thread warningthread=new Thread()
{
public void run()
{
try
{
sleep(2000);
}
catch (InterruptedException e)
{
return;
}
System.err.println(" (might take a few minutes for large data sets)");
}
};
warningthread.start();
//set up measurements
Measurements.setProperties(props);
//load the workload
ClassLoader classLoader = Client.class.getClassLoader();
Workload workload=null;
try
{
Class workloadclass = classLoader.loadClass(props.getProperty(WORKLOAD_PROPERTY));
workload=(Workload)workloadclass.newInstance();
}
catch (Exception e)
{
e.printStackTrace();
e.printStackTrace(System.out);
System.exit(0);
}
try
{
workload.init(props);
}
catch (WorkloadException e)
{
e.printStackTrace();
e.printStackTrace(System.out);
System.exit(0);
}
warningthread.interrupt();
//run the workload
System.err.println("Starting test.");
int opcount;
if (dotransactions)
{
opcount=Integer.parseInt(props.getProperty(OPERATION_COUNT_PROPERTY,"0"));
}
else
{
if (props.containsKey(INSERT_COUNT_PROPERTY))
{
opcount=Integer.parseInt(props.getProperty(INSERT_COUNT_PROPERTY,"0"));
}
else
{
opcount=Integer.parseInt(props.getProperty(RECORD_COUNT_PROPERTY,"0"));
}
}
Vector<Thread> threads=new Vector<Thread>();
for (int threadid=0; threadid<threadcount; threadid++)
{
DB db=null;
try
{
db=DBFactory.newDB(dbname,props);
}
catch (UnknownDBException e)
{
System.out.println("Unknown DB "+dbname);
System.exit(0);
}
Thread t=new ClientThread(db,dotransactions,workload,threadid,threadcount,props,opcount/threadcount,targetperthreadperms);
threads.add(t);
//t.start();
}
StatusThread statusthread=null;
if (status)
{
boolean standardstatus=false;
if (props.getProperty("measurementtype","").compareTo("timeseries")==0)
{
standardstatus=true;
}
statusthread=new StatusThread(threads,label,standardstatus);
statusthread.start();
}
long st=System.currentTimeMillis();
for (Thread t : threads)
{
t.start();
}
for (Thread t : threads)
{
try
{
t.join();
}
catch (InterruptedException e)
{
}
}
long en=System.currentTimeMillis();
if (status)
{
statusthread.interrupt();
}
try
{
workload.cleanup();
}
catch (WorkloadException e)
{
e.printStackTrace();
e.printStackTrace(System.out);
System.exit(0);
}
out.println("[OVERALL],RunTime(ms), "+(en-st));
double throughput=1000.0*((double)opcount)/((double)(en-st));
out.println("[OVERALL],Throughput(ops/sec), "+throughput);
Measurements.getMeasurements().printReport(out);
System.exit(0);
}
}

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