org.ocap.system.event.ErrorEvent Maven / Gradle / Ivy
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/*
* ErrorEvent.java
* Created on February 20, 2004, 1:56 PM
*/
package org.ocap.system.event;
/**
* This class represents an event returned by the system when an uncaught exception or
* implementation error is encountered, or by an application that wishes to log an error or
* an informational event. Error event type codes are defined in this class.
* Applications may use the error type codes in this class or proprietary class
* codes that are understood by the network.
*
* The class takes a {@link java.lang.Throwable} object parameter in one constructor, but the
* Throwable object cannot be returned from this class due to implementation and security
* issues. The Throwable object attributes (i.e., message and stacktrace) can be retrieved
* from this class by calling corresponding get methods, which in-turn call the Throwable
* object get methods. However, the implementation MUST NOT allow the Throwable object get
* methods to block indefinitely when called and MUST NOT wait longer than 30 seconds for them
* to return.
*
*/
public class ErrorEvent extends SystemEvent
{
/* Error Event type codes */
//**** Application information event codes ****
/**
* Application informational event that doesn't fit into any other given category.
*/
public final static int APP_INFO_GENERAL_EVENT = BEGIN_APP_INFO_RESERVED_EVENT_TYPES;
//**** Application recoverable error codes ****
/**
* Application recoverable error that doesn't fit into any other given category.
*/
public final static int APP_REC_GENERAL_ERROR = BEGIN_APP_REC_ERROR_RESERVED_EVENT_TYPES;
/**
* Application recoverable error - a Java Throwable caught by an exception, but that can
* be recovered from by the application, or a Throwable that was created by an
* application due to detection of a recoverable event.
*/
public final static int APP_REC_JAVA_THROWABLE = BEGIN_APP_REC_ERROR_RESERVED_EVENT_TYPES + 1;
//**** Application catastrophic error codes ****
/**
* Application catastrophic error that doesn't fit into any other given category.
*/
public final static int APP_CAT_GENERAL_ERROR = BEGIN_APP_CAT_ERROR_RESERVED_EVENT_TYPES;
//**** System information event codes ****
/**
* System informational event that doesn't fit into any other given category.
*/
public final static int SYS_INFO_GENERAL_EVENT = BEGIN_SYS_INFO_RESERVED_EVENT_TYPES;
//**** System recoverable error codes ****
/**
* System error that doesn't fit into any other given category.
*/
public final static int SYS_REC_GENERAL_ERROR = BEGIN_SYS_REC_ERROR_RESERVED_EVENT_TYPES;
//**** System catastrophic error codes ****
/**
* System catastrophic error that doesn't fit into any other given category.
*/
public final static int SYS_CAT_GENERAL_ERROR = BEGIN_SYS_CAT_ERROR_RESERVED_EVENT_TYPES;
/**
* Java Throwable thrown by a call made by an application but not caught by the application.
* This event is generated by the implementation, but indicates that an application cannot
* continue normal operations.
*/
public final static int SYS_CAT_JAVA_THROWABLE = BEGIN_SYS_CAT_ERROR_RESERVED_EVENT_TYPES + 1;
/**
* Class constructor specifying the event type code and readable message.
*
* @param typeCode - Unique error type code.
*
* @param message - Readable error message.
*
* @throws IllegalArgumentException when called by an application and the typeCode
* is not in one of the following ranges:
* {@link #BEGIN_APP_INFO_EVENT_TYPES} to {@link #END_APP_INFO_EVENT_TYPES}, or
* {@link #BEGIN_APP_REC_ERROR_EVENT_TYPES} to {@link #END_APP_REC_ERROR_EVENT_TYPES}, or
* {@link #BEGIN_APP_CAT_ERROR_EVENT_TYPES} to {@link #END_APP_CAT_ERROR_EVENT_TYPES}.
*/
public ErrorEvent(int typeCode, String message)
{
super(typeCode, message);
}
/**
* Class constructor specifying the event type code, and throwable condition. The message
* is derived from the Throwable object. The
*
* @param typeCode - The unique error type code.
* @param throwable - A throwable object that was generated by the implementation or
* an application in response to an informational or error event, or by the
* implementation when a call made by an application throws an exception that
* isn't caught by the application.
*
* @throws IllegalArgumentException when called by an application and the typeCode
* is not in one of the following ranges:
* {@link #BEGIN_APP_INFO_EVENT_TYPES} to {@link #END_APP_INFO_EVENT_TYPES}, or
* {@link #BEGIN_APP_REC_ERROR_EVENT_TYPES} to {@link #END_APP_REC_ERROR_EVENT_TYPES}, or
* {@link #BEGIN_APP_CAT_ERROR_EVENT_TYPES} to {@link #END_APP_CAT_ERROR_EVENT_TYPES}.
*/
public ErrorEvent(int typeCode, Throwable throwable)
{
super(typeCode);
}
/**
* This constructor is provided for internal use by OCAP implementations;
* applications SHOULD NOT call it.
*
* @param typeCode - The unique error type code.
* @param message - Readable message specific to the event generator.
* @param stacktrace - Stacktrace taken from a Throwable object or null if no Throwable
* used.
* @param throwableClasses - The class hierarchy list from a Throwable object or null if
* no Throwable used.
* @param date - Event date in milli-seconds from midnight January 1, 1970 GMT.
* @param appId - The Id of the application logging the event.
*
* @throws SecurityException if this constructor is called by any application.
*/
public ErrorEvent(int typeCode,
String message,
String stacktrace,
String [] throwableClasses,
long date,
org.dvb.application.AppID appId){
super(typeCode, message, date, appId);
}
/**
* Gets the stack trace from the Throwable object if a Throwable object was passed to the
* appropriate constructor.
*
* @return The stack trace from the Throwable object, or null if no Throwable object
* is available, or if the message cannot be extracted from the Throwable object
* (perhaps Throwable.printStackTrace() threw an exception or blocked).
*/
public String getStackTrace()
{
return null;
}
/**
* Gets the readable message String that was passed to a constructor explicitly or within
* a Throwable object.
*
* @return The readable message, if the message cannot be extracted from the Throwable object
* (perhaps Throwable.getMessage() threw an exception or blocked).
*/
public String getMessage()
{
return null;
}
/**
* Gets the class hierarchy from the Throwable object that was passed to the corresponding
* constructor. Each String in the array will be a fully qualified class name. The first
* will be the full class name (with package name) of the Throwable object passed to this class.
* Each subsequent String shall contain the name of a super class up to but not
* including java.lang.Object.
*
* @return The stack trace from the Throwable object, or null if no Throwable object is
* available.
*/
public String [] getThrowableClasses()
{
return null;
}
}