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package com.sun.enterprise.server.logging.diagnostics;
import java.util.ArrayList;
import java.util.ResourceBundle;
import java.util.MissingResourceException;
/**
* Simple catalog class to locate Diagnostic Information based on
* message id as the key.
*
* @author Hemanth Puttaswamy
*/
public class MessageIdCatalog{
private static final MessageIdCatalog instance =
new MessageIdCatalog( );
public static MessageIdCatalog getInstance( ) {
return instance;
}
/**
* Get all the documented DiagnosticCauses for a given message id.
* The results will be localized based on the current locale of
* the AppServer's JVM.
*/
public ArrayList getDiagnosticCausesForMessageId( String messageId ) {
ResourceBundle rb =
ResourceBundleLocator.getResourceBundleForMessageId( messageId );
String cause = null;
ArrayList causes = null;
if( rb != null ) {
for( int i = 1; i < Constants.MAX_CAUSES_AND_CHECKS; i++ ) {
// The convention used to document diagnostic causes in
// resource bundle is
// <MsgId>.diag.cause.1= <Cause 1>
// <MsgId>.diag.cause.2= <Cause 2> ....
try {
cause = rb.getString( messageId +
Constants.CAUSE_PREFIX + i );
} catch( MissingResourceException e ) {
// We couldn't find any causes listed for the message
// id or we have found all. In either case we are
// covered here.
break;
}
if( cause == null ) { break; }
if( causes == null ) {
causes = new ArrayList( );
}
causes.add( cause );
}
}
return causes;
}
/**
* Get all the documented DiagnosticChecks for a given message id.
* The results will be localized based on the current locale of
* the AppServer's JVM.
*/
public ArrayList getDiagnosticChecksForMessageId( String messageId ) {
ResourceBundle rb =
ResourceBundleLocator.getResourceBundleForMessageId( messageId );
String check = null;
ArrayList checks = null;
if( rb != null ) {
for( int i = 1; i < Constants.MAX_CAUSES_AND_CHECKS; i++ ) {
// The convention used to document diagnostic checks in
// resource bundle is
// <MsgId>.diag.check.1= <Check 1>
// <MsgId>.diag.check.2= <Check 2> ....
try {
check = rb.getString( messageId +
Constants.CHECK_PREFIX + i );
} catch( MissingResourceException e ) {
// We couldn't find any checks listed for the message
// id or we have found all. In either case we are
// covered here.
break;
}
if( check == null ) break;
if( checks == null ) {
checks = new ArrayList( );
}
checks.add( check );
}
}
return checks;
}
/**
* We may collect lot of diagnostic causes and diagnostic checks for
* some common message id from the field. We may document those
* even after the product is shipped. We are planning to generate the
* HTML's from the resource bundle's diagnostics and update the javadoc
* or knowledgebase site. This URI should help us to locate the latest
* and greatest diagnostic info based on the message id.
*/
public String getDiagnosticURIForMessageId( String messageId ) {
String moduleId = ResourceBundleLocator.getModuleId( messageId );
if( moduleId == null ) { return null; }
return Constants.URI_PREFIX + moduleId + "/" + messageId;
}
public Diagnostics getDiagnosticsForMessageId( String messageId ) {
ArrayList causes = getDiagnosticCausesForMessageId( messageId );
ArrayList checks = getDiagnosticChecksForMessageId( messageId );
if( ( causes == null )
&&( checks == null ) ) {
return null;
}
Diagnostics diagnostics = new Diagnostics( messageId );
diagnostics.setPossibleCauses( causes );
diagnostics.setDiagnosticChecks( checks );
diagnostics.setURI( getDiagnosticURIForMessageId( messageId ) );
return diagnostics;
}
}
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