package org.apache.lucene.benchmark.byTask.utils;
/**
* 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.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.Reader;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Properties;
import java.util.StringTokenizer;
/**
* Perf run configuration properties.
* Numeric peroperty containing ":", e.g. "10:100:5" is interpreted
* as array of numeric values. It is extracted once, on first use, and
* maintain an round number to return the appropriate value.
*/
public class Config {
private static final String NEW_LINE = System.getProperty("line.separator");
private int roundNumber = 0;
private Properties props;
private HashMap valByRound = new HashMap();
private HashMap colForValByRound = new HashMap();
private String algorithmText;
/**
* Read both algorithm and config properties.
* @param algReader from where to read algorithm and config properties.
* @throws IOException
*/
public Config (Reader algReader) throws IOException {
// read alg file to array of lines
ArrayList lines = new ArrayList();
BufferedReader r = new BufferedReader(algReader);
int lastConfigLine=0;
for (String line = r.readLine(); line!=null; line=r.readLine()) {
lines.add(line);
if (line.indexOf('=')>0) {
lastConfigLine = lines.size();
}
}
r.close();
// copy props lines to string
StringBuffer sb = new StringBuffer();
for (int i=0; i<lastConfigLine; i++) {
sb.append(lines.get(i));
sb.append(NEW_LINE);
}
// read props from string
this.props = new Properties();
props.load(new ByteArrayInputStream(sb.toString().getBytes()));
if (Boolean.valueOf(props.getProperty("print.props","true")).booleanValue()) {
printProps();
}
// copy algorithm lines
sb = new StringBuffer();
for (int i=lastConfigLine; i<lines.size(); i++) {
sb.append(lines.get(i));
sb.append(NEW_LINE);
}
algorithmText = sb.toString();
}
/**
* Create config without algorithm - usefull for a programmatic perf test.
* @param props - configuration properties.
* @throws IOException
*/
public Config (Properties props) {
this.props = props;
if (Boolean.valueOf(props.getProperty("print.props","true")).booleanValue()) {
printProps();
}
}
private void printProps() {
System.out.println("------------> config properties:");
for (Iterator it = props.keySet().iterator(); it.hasNext();) {
String propName = (String) it.next();
System.out.println(propName + " = " + props.getProperty(propName));
}
System.out.println("-------------------------------");
}
/**
* Return a string property.
* @param name name of property.
* @param dflt default value.
* @return a string property.
*/
public String get (String name, String dflt) {
return props.getProperty(name,dflt);
}
/**
* Set a property.
* Note: once a multiple values property is set, it can no longer be modified.
* @param name name of property.
* @param value either single or multiple propery value (multple values are separated by ":")
* @throws Exception
*/
public void set (String name, String value) throws Exception {
if (valByRound.get(name) != null) {
throw new Exception("Cannot modify a multi value property!");
}
props.setProperty(name,value);
}
/**
* Return an int property.
* If the property contain ":", e.g. "10:100:5", it is interpreted
* as array of ints. It is extracted once, on first call
* to get() it, and a by-round-value is returned.
* @param name name of property
* @param dflt default value
* @return a int property.
*/
public int get (String name, int dflt) {
// use value by round if already parsed
int vals[] = (int[]) valByRound.get(name);
if (vals != null) {
return vals[roundNumber % vals.length];
}
// done if not by round
String sval = props.getProperty(name,""+dflt);
if (sval.indexOf(":")<0) {
return Integer.parseInt(sval);
}
// first time this prop is extracted by round
int k = sval.indexOf(":");
String colName = sval.substring(0,k);
sval = sval.substring(k+1);
colForValByRound.put(name,colName);
vals = propToIntArray(sval);
valByRound.put(name,vals);
return vals[roundNumber % vals.length];
}
/**
* Return a boolean property.
* If the property contain ":", e.g. "true.true.false", it is interpreted
* as array of boleans. It is extracted once, on first call
* to get() it, and a by-round-value is returned.
* @param name name of property
* @param dflt default value
* @return a int property.
*/
public boolean get (String name, boolean dflt) {
// use value by round if already parsed
boolean vals[] = (boolean[]) valByRound.get(name);
if (vals != null) {
return vals[roundNumber % vals.length];
}
// done if not by round
String sval = props.getProperty(name,""+dflt);
if (sval.indexOf(":")<0) {
return Boolean.valueOf(sval).booleanValue();
}
// first time this prop is extracted by round
int k = sval.indexOf(":");
String colName = sval.substring(0,k);
sval = sval.substring(k+1);
colForValByRound.put(name,colName);
vals = propToBooleanArray(sval);
valByRound.put(name,vals);
return vals[roundNumber % vals.length];
}
/**
* Increment the round number, for config values that are extracted by round number.
* @return the new round number.
*/
public int newRound () {
roundNumber++;
StringBuffer sb = new StringBuffer("--> Round ").append(roundNumber-1).append("-->").append(roundNumber);
// log changes in values
if (valByRound.size()>0) {
sb.append(": ");
for (Iterator iter = valByRound.keySet().iterator(); iter.hasNext();) {
String name = (String) iter.next();
Object a = valByRound.get(name);
if (a instanceof int[]) {
int ai[] = (int[]) a;
int n1 = (roundNumber-1)%ai.length;
int n2 = roundNumber%ai.length;
sb.append(" ").append(name).append(":").append(ai[n1]).append("-->").append(ai[n2]);
} else {
boolean ab[] = (boolean[]) a;
int n1 = (roundNumber-1)%ab.length;
int n2 = roundNumber%ab.length;
sb.append(" ").append(name).append(":").append(ab[n1]).append("-->").append(ab[n2]);
}
}
}
System.out.println();
System.out.println(sb.toString());
System.out.println();
return roundNumber;
}
// extract properties to array, e.g. for "10.100.5" return int[]{10,100,5}.
private int[] propToIntArray (String s) {
if (s.indexOf(":")<0) {
return new int [] { Integer.parseInt(s) };
}
ArrayList a = new ArrayList();
StringTokenizer st = new StringTokenizer(s,":");
while (st.hasMoreTokens()) {
String t = st.nextToken();
a.add(new Integer(t));
}
int res[] = new int[a.size()];
for (int i=0; i<a.size(); i++) {
res[i] = ((Integer) a.get(i)).intValue();
}
return res;
}
// extract properties to array, e.g. for "true.true.false" return booleab[]{true,false,false}.
private boolean[] propToBooleanArray (String s) {
if (s.indexOf(":")<0) {
return new boolean [] { Boolean.valueOf(s).booleanValue() };
}
ArrayList a = new ArrayList();
StringTokenizer st = new StringTokenizer(s,":");
while (st.hasMoreTokens()) {
String t = st.nextToken();
a.add(new Boolean(t));
}
boolean res[] = new boolean[a.size()];
for (int i=0; i<a.size(); i++) {
res[i] = ((Boolean) a.get(i)).booleanValue();
}
return res;
}
/**
* @return names of params set by round, for reports title
*/
public String getColsNamesForValsByRound() {
if (colForValByRound.size()==0) {
return "";
}
StringBuffer sb = new StringBuffer();
for (Iterator it = colForValByRound.keySet().iterator(); it.hasNext();) {
String name = (String) it.next();
String colName = (String) colForValByRound.get(name);
sb.append(" ").append(colName);
}
return sb.toString();
}
/**
* @return values of params set by round, for reports lines.
*/
public String getColsValuesForValsByRound(int roundNum) {
if (colForValByRound.size()==0) {
return "";
}
StringBuffer sb = new StringBuffer();
for (Iterator it = colForValByRound.keySet().iterator(); it.hasNext();) {
String name = (String) it.next();
String colName = (String) colForValByRound.get(name);
String template = " "+colName;
if (roundNum<0) {
// just append blanks
sb.append(Format.formatPaddLeft("-",template));
} else {
// append actual values, for that round
Object a = valByRound.get(name);
if (a instanceof int[]) {
int ai[] = (int[]) a;
int n = roundNum % ai.length;
sb.append(Format.format(ai[n],template));
} else {
boolean ab[] = (boolean[]) a;
int n = roundNum % ab.length;
sb.append(Format.formatPaddLeft(""+ab[n],template));
}
}
}
return sb.toString();
}
/**
* @return the round number.
*/
public int getRoundNumber() {
return roundNumber;
}
/**
* @return Returns the algorithmText.
*/
public String getAlgorithmText() {
return algorithmText;
}
}
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