/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
* [name of copyright owner]"
*
* Contributor(s):
*
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.enterprise.cli.commands;
import java.io.File;
import java.lang.reflect.Method;
import java.io.PrintStream;
import java.io.FileOutputStream;
import java.io.IOException;
import com.sun.enterprise.util.i18n.StringManager;
import com.sun.enterprise.cli.framework.CommandException;
/**
* This class uses Java reflection to invoke Derby
* NetworkServerControl class.
* This class is used to start/stop/ping derby database.
* The reason for creating this class instead of directly
* invoking NetworkServerControl from the StartDatabaseCommand
* class is so that a separate JVM is launched when starting the
* database and the control is return to CLI.
* @author <a href="mailto:jane.young@sun.com">Jane Young</a>
* @version $Revision: 1.13 $
*/
public final class DerbyControl
{
final public static String DB_LOG_FILENAME = "derby.log";
final private String derbyCommand;
final private String derbyHost;
final private String derbyPort;
final private String derbyHome;
final private boolean redirect;
//constructor
public DerbyControl(final String dc, final String dht, final String dp,
final String redirect, final String dhe)
{
this.derbyCommand = dc;
this.derbyHost = dht;
this.derbyPort = dp;
this.derbyHome = dhe;
this.redirect = Boolean.valueOf(redirect).booleanValue();
if (this.redirect) {
try {
String dbLog = "";
if (this.derbyHome == null) {
// if derbyHome is null then redirect the output to a temporary file
// which gets deleted after the jvm exists.
dbLog = createTempLogFile();
}
else {
dbLog = createDBLog(this.derbyHome);
}
//redirect stdout and stderr to a file
PrintStream printStream = new PrintStream(new FileOutputStream(dbLog, true), true);
System.setOut(printStream);
System.setErr(printStream);
}
catch (Throwable t) {
t.printStackTrace();
//exit with an error code of 2
System.exit(2);
}
}
//do not set derby.system.home if derbyHome is empty
if (this.derbyHome!=null && this.derbyHome.length()>0) {
System.setProperty("derby.system.home", this.derbyHome);
}
//set the property to not overwrite log file
System.setProperty("derby.infolog.append", "true");
}
//constructor
public DerbyControl(final String dc, final String dht, final String dp)
{
this(dc,dht,dp,"true", null);
}
//constructor
public DerbyControl(final String dc, final String dht, final String dp, final String redirect)
{
this(dc,dht,dp,redirect,null);
}
/**
* This methos invokes the Derby's NetworkServerControl to start/stop/ping
* the database.
*/
private void invokeNetworkServerControl()
{
try {
Class networkServer = Class.forName("org.apache.derby.drda.NetworkServerControl");
Method networkServerMethod = networkServer.getDeclaredMethod("main",
new Class[]{String[].class});
Object [] paramObj = new Object[]{new String[]{derbyCommand, "-h", derbyHost, "-p", derbyPort}};
networkServerMethod.invoke(networkServer, paramObj);
}
catch (Throwable t) {
t.printStackTrace();
System.exit(2);
}
}
/**
* create a db.log file that stdout/stderr will redirect to.
* dbhome is the derby.system.home directory where derb.log
* gets created. if user specified --dbhome options, derby.log
* will be created there.
**/
private String createDBLog(final String dbHome) throws Exception
{
//dbHome must exist and have write permission
final File fDBHome = new File(dbHome);
String dbLogFileName = "";
final StringManager lsm = StringManager.getManager(DerbyControl.class);
if (fDBHome.isDirectory() && fDBHome.canWrite()) {
final File fDBLog = new File(dbHome, DB_LOG_FILENAME);
dbLogFileName = fDBLog.toString();
//if the file exists, check if it is writeable
if (fDBLog.exists() && !fDBLog.canWrite()) {
System.out.println(lsm.getString("UnableToAccessDatabaseLog", dbLogFileName));
System.out.println(lsm.getString("ContinueStartingDatabase"));
//if exist but not able to write then create a temporary
//log file and persist on starting the database
dbLogFileName = createTempLogFile();
}
else if (!fDBLog.exists()) {
//create log file
fDBLog.createNewFile();
}
}
else {
System.out.println(lsm.getString("InvalidDirectory", dbHome));
System.out.println(lsm.getString("ContinueStartingDatabase"));
//if directory does not exist then create a temporary log file
//and persist on starting the database
dbLogFileName = createTempLogFile();
}
return dbLogFileName;
}
/**
creates a temporary log file.
*/
private String createTempLogFile() throws CommandException
{
String tempFileName = "";
try {
final File fTemp = File.createTempFile("foo", null);
fTemp.deleteOnExit();
tempFileName = fTemp.toString();
}
catch (IOException ioe) {
final StringManager lsm = StringManager.getManager(DerbyControl.class);
throw new CommandException(lsm.getString("UnableToAccessDatabaseLog", tempFileName));
}
return tempFileName;
}
public static void main(String[] args) {
if (args.length<3){
System.out.println("paramters not specified.");
System.out.println("DerbyControl <derby command> <derby host> <derby port> <derby home> <redirect output>");
System.exit(1);
}
DerbyControl derbyControl = null;
if (args.length == 3)
derbyControl = new DerbyControl(args[0], args[1], args[2]);
else if (args.length == 4 )
derbyControl = new DerbyControl(args[0], args[1], args[2], args[3]);
else if (args.length > 4)
derbyControl = new DerbyControl(args[0], args[1], args[2], args[3], args[4]);
if (derbyControl != null)
derbyControl.invokeNetworkServerControl();
}
}
|
