fr.dyade.aaa.util.BaseTransaction Maven / Gradle / Ivy
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Builds the Joram a3 rt project.
/*
* Copyright (C) 2011 - 2023 ScalAgent Distributed Technologies
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*/
package fr.dyade.aaa.util;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Arrays;
import java.util.InvalidPropertiesFormatException;
import java.util.Properties;
import org.objectweb.util.monolog.api.BasicLevel;
import org.objectweb.util.monolog.api.Logger;
import fr.dyade.aaa.common.BinaryDump;
import fr.dyade.aaa.common.Configuration;
import fr.dyade.aaa.common.Debug;
public abstract class BaseTransaction implements Transaction {
// Logging monitor
protected static Logger logmon = Debug.getLogger(Transaction.class.getName());
// Note (AF): This set of properties is filled each time a property is search and not found locally.
// The property is then locally updated with the value found in configuration (see getProperty).
private Properties props = null;
public BaseTransaction() {
props = new Properties();
}
// Note (AF): This method is never used, it can be temporary added to a Transaction MBean to
// simulate a blocking during tests.
public synchronized void freeze(long timeout) throws InterruptedException {
logmon.log(BasicLevel.WARN, "Transaction.freeze " + timeout, new Exception());
Thread.sleep(timeout);
}
public void loadProperties(File dir) throws InvalidPropertiesFormatException, FileNotFoundException, IOException {
// Gets default Transaction properties from disk
File tpf = new File(dir, "TPF");
if (tpf.exists()) {
props.loadFromXML(new FileInputStream(tpf));
}
}
public void saveProperties(File dir) throws IOException {
// Saves default Transaction properties if needed
File tpf = new File(dir, "TPF");
if (! tpf.exists()) {
FileOutputStream fos = null;
try {
fos = new FileOutputStream(tpf);
props.storeToXML(fos, "Transaction properties");
} catch (Exception exc) {
logmon.log(BasicLevel.ERROR,
"Transaction, Cannot save Transaction properties", exc);
} finally {
if (fos != null) fos.close();
}
}
}
/**
* Searches for the property with the specified key in the specific Transaction
* property list. If the key is not found in this property list, the Configuration
* property list is then checked. The property list is then updated.
* The method returns null if the property is not found.
*
* @param key the property key.
* @return the value corresponding to the specified key value.
*/
public String getProperty(String key) {
String value = props.getProperty(key);
if (value == null) {
value = Configuration.getProperty(key);
if (value != null) props.setProperty(key, value);
}
return value;
}
/**
* Searches for the property with the specified key in the specific Transaction
* property list. If the key is not found in this property list, the Configuration
* property list is then checked. The method returns the default value argument
* if the property is not found.
*
* @param key the property key.
* @param defaultValue a default value.
*
* @return the value corresponding to the specified key value.
*/
public String getProperty(String key, String defaultValue) {
String value = getProperty(key);
return (value == null) ? defaultValue : value;
}
/**
* Determines the integer value of the property with the specified name.
*
* @param key
* property name.
* @return the Integer value of the property.
*/
public Integer getInteger(String key) {
try {
return Integer.valueOf(getProperty(key));
} catch (Exception exc) {
return null;
}
}
/**
* Determines the integer value of the property with the specified name.
*
* @param key
* property name.
* @param value
* a default value.
* @return the Integer value of the property.
*/
public Integer getInteger(String key, int value) {
Integer result = getInteger(key);
return (result == null) ? new Integer(value) : result;
}
/**
* Returns true if and only if the corresponding property exists
* and is equal to the string {@code "true"}.
*
* @param key the property name.
* @return the boolean value of the property.
*/
public boolean getBoolean(String key) {
String result = getProperty(key);
if ((result != null) && result.equalsIgnoreCase("true"))
return true;
return false;
}
/**
* Only use with MBean.
*/
@Override
public String getObject(String dirname, String name) {
try {
byte[] bytes = loadByteArray(dirname, name);
if (bytes != null)
return BinaryDump.toHex(bytes);
return "null";
} catch (IOException exc) {
return exc.getMessage();
}
}
/**
* JMX operation.
* This operation sorts the resulting array and filters out the prefix identical for each object name.
*
* @param prefix
* @return
*/
@Override
public String dumpObjectList(String prefix) {
String[] list = getList(prefix);
Arrays.sort(list);
StringBuilder strbuf = new StringBuilder();
int subidx = prefix.length();
strbuf.append("TxObjectsX(").append(prefix).append(")[").append(list.length).append("]={");
for (String name : list) {
strbuf.append(name.substring(subidx)).append(", ");
}
strbuf.append('}');
return strbuf.toString();
}
/**
* JMX operation.
* @param prefix
* @return
*/
@Override
public String[] getObjectList(String prefix) {
return getList(prefix);
}
}