StartDatabaseCommandpublic final class StartDatabaseCommand extends DatabaseCommand | start-database command
This command class will invoke DerbyControl to first ping
if the database is running. If not then it will start
the database. If the database is already started, then
a message will be displayed to the user. |
| Fields Summary |
|---|
| private static final String | DB_HOME | | private static final String | DATABASE_DIR_NAME | | private String | dbHome |
| Methods Summary |
|---|
| private java.lang.String | getDatabaseHomeDir()This method returns dbhome.
If dbhome option is specified, then the option value is returned.
If not, then go through series of conditions to determine the
default dbhome directory.
The conditions are as follow:
1. if derby.log exists in the current directory, then that is
the default dbhome directory.
2. if derby.log does not exist in the current directory, then
create a "databases" in . This
is usually in filebased installation. In
package based installation this directory is /var/SUNWappserver.
//dbhome is specified then return the dbhome option value
if (getOption(DB_HOME) !=null) return getOption(DB_HOME);
//check if current directory contains derby.log
//for now we are going to rely on derby.log file to ascertain
//whether the current directory is where databases were created.
//However, this may not always be right.
//The reason for this behavior is so that it is
//compatible with 8.2PE and 9.0 release.
//In 8.2PE and 9.0, the current directory is the
//default dbhome.
final String currentDir = System.getProperty("user.dir");
if ((new File(currentDir, DerbyControl.DB_LOG_FILENAME)).exists())
return currentDir;
//the default dbhome is <parent directory of domains>/databases
final String domainPath = System.getProperty(SystemPropertyConstants.DOMAINS_ROOT_PROPERTY);
final File installPath = (new File(domainPath)).getParentFile();
if (installPath != null) {
final File dbDir = new File(installPath, DATABASE_DIR_NAME);
dbDir.mkdir();
try {
return dbDir.getCanonicalPath();
}
catch (IOException ioe) {
//if unable to get canonical path, then return the absolute path
return dbDir.getAbsolutePath();
}
}
//hopefully it'll never get here. if installPath is null then
//asenv.conf is incorrect.
return null;
| | public void | runCommand()method that execute the command
validateOptions();
final CLIProcessExecutor cpe = new CLIProcessExecutor();
String dbLog = "";
try {
prepareProcessExecutor();
dbHome = getDatabaseHomeDir();
if (dbHome != null)
dbLog = dbHome + File.separator + DerbyControl.DB_LOG_FILENAME;
CLILogger.getInstance().printDebugMessage("Ping Database");
cpe.execute(pingDatabaseCmd(true), true);
//if ping is unsuccesfull then database is not up and running
if (cpe.exitValue() > 0) {
CLILogger.getInstance().printDebugMessage("Start Database");
cpe.execute(startDatabaseCmd(), false);
if (cpe.exitValue() != 0) {
throw new CommandException(getLocalizedString("UnableToStartDatabase",
new Object[]{dbLog}));
}
}
else if (cpe.exitValue() < 0) {
// Something terribly wrong!
throw new CommandException(getLocalizedString("CommandUnSuccessful",
new Object[] {name} ));
}
else {
//database already started
CLILogger.getInstance().printMessage(getLocalizedString(
"StartDatabaseStatus",
new Object[]{dbHost, dbPort}));
CLILogger.getInstance().printDetailMessage(getLocalizedString(
"CommandSuccessful",
new Object[] {name}));
}
}
catch (IllegalThreadStateException ite) {
// IllegalThreadStateException is thrown if the
// process has not yet teminated and is still running.
// see http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Process.html#exitValue()
// This is good since that means the database is up and running.
if (!getBooleanOption(TERSE)) {
try {
CLILogger.getInstance().printDetailMessage(
getLocalizedString("database.info.msg",
new Object[]{dbHost, dbPort}));
//try getting sysinfo
CLILogger.getInstance().printDebugMessage("Database SysInfo");
new CLIProcessExecutor().execute(sysinfoCmd(), true);
}
catch (Exception e) {
throw new CommandException(getLocalizedString("CommandUnSuccessful",
new Object[] {name}), e);
}
}
CLILogger.getInstance().printMessage(getLocalizedString("DatabaseStartMsg"));
if ((new File(dbLog)).canWrite()) {
CLILogger.getInstance().printMessage(getLocalizedString("LogRedirectedTo",
new Object[]{dbLog}));
}
CLILogger.getInstance().printDetailMessage(getLocalizedString(
"CommandSuccessful",
new Object[] {name}));
}
catch (Exception e) {
displayExceptionMessage(e);
}
| | public java.lang.String[] | startDatabaseCmd()defines the command to start the derby database
Note that when using Darwin (Mac), the property,
"-Dderby.storage.fileSyncTransactionLog=True" is defined.
if (OS.isDarwin()) {
return new String [] {
sJavaHome+File.separator+"bin"+File.separator+"java",
"-Djava.library.path="+sInstallRoot+File.separator+"lib",
"-Dderby.storage.fileSyncTransactionLog=True",
"-cp",
sClasspath + File.pathSeparator + sDatabaseClasspath,
"com.sun.enterprise.cli.commands.DerbyControl",
"start",
dbHost, dbPort, "true", dbHome
};
}
else {
return new String [] {
sJavaHome+File.separator+"bin"+File.separator+"java",
"-Djava.library.path="+sInstallRoot+File.separator+"lib",
"-cp",
sClasspath + File.pathSeparator + sDatabaseClasspath,
"com.sun.enterprise.cli.commands.DerbyControl",
"start",
dbHost, dbPort, "true", dbHome
};
}
| | public java.lang.String[] | sysinfoCmd()defines the command to print out the database sysinfo
Note that when using Darwin (Mac), the property,
"-Dderby.storage.fileSyncTransactionLog=True" is defined.
if (OS.isDarwin()) {
return new String [] {
sJavaHome+File.separator+"bin"+File.separator+"java",
"-Djava.library.path="+sInstallRoot+File.separator+"lib",
"-Dderby.storage.fileSyncTransactionLog=True",
"-cp",
sClasspath + File.pathSeparator + sDatabaseClasspath,
"com.sun.enterprise.cli.commands.DerbyControl",
"sysinfo",
dbHost, dbPort, "false"
};
}
else {
return new String [] {
sJavaHome+File.separator+"bin"+File.separator+"java",
"-Djava.library.path="+sInstallRoot+File.separator+"lib",
"-cp",
sClasspath + File.pathSeparator + sDatabaseClasspath,
"com.sun.enterprise.cli.commands.DerbyControl",
"sysinfo",
dbHost, dbPort, "false"
};
}
| | public boolean | validateOptions()An method that validates the options
on the specification in the xml properties file
This method verifies for the correctness of number of
operands and if all the required options are supplied by the client.
return super.validateOptions();
|
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