org.restlet.service

Class LogService

java.lang.Object

org.restlet.service.Service

org.restlet.service.LogService

public class LogService
extends Service

Service providing access logging service. The implementation is fully based on the standard logging mechanism introduced in JDK 1.4.

The default access log format follows the W3C Extended Log File Format with the following fields used:

1. Date (YYYY-MM-DD)
2. Time (HH:MM:SS)
3. Client address (IP)
4. Remote user identifier (see RFC 1413)
5. Server address (IP)
6. Server port
7. Method (GET|POST|...)
8. Resource reference path (including the leading slash)
9. Resource reference query (excluding the leading question mark)
10. Response status code
11. Number of bytes sent
12. Number of bytes received
13. Time to serve the request (in milliseconds)
14. Host reference
15. Client agent name
16. Referrer reference

If you use Analog to generate your log reports, and if you use the default log format, then you can simply specify this string as a value of the LOGFORMAT command: (%Y-%m-%d\t%h:%n:%j\t%S\t%u\t%j\t%j\t%j\t%r\t%q\t%c\t%b\t%j\t%T\t%v\t%B\t%f)

For custom access log format, see the syntax to use and the list of available variable names in Template.

Author:

Jerome Louvel

See Also:

User Guide - Access logging, java.util.logging

Field Summary

Fields

Modifier and Type	Field and Description
protected Template	responseLogTemplate The response log template to use.

Constructor Summary

Constructors

Constructor and Description
LogService() Constructor.
LogService(boolean enabled) Constructor.

Method Summary

Modifier and Type	Method and Description
Filter	createInboundFilter(Context context) Create the filter that should be invoked for incoming calls.
protected java.lang.String	getDefaultResponseLogMessage(Response response, int duration) Format a log entry using the default IIS log format.
Template	getLoggableTemplate() Returns the URI template of loggable resource references.
java.lang.String	getLoggerName() Returns the name of the JDK's logger to use when logging access calls.
Reference	getLogPropertiesRef() Returns the URI reference of the log properties.
java.lang.String	getResponseLogFormat() Returns the format used when logging responses.
java.lang.String	getResponseLogMessage(Response response, int duration) Format an access log entry.
protected boolean	isDebugging() Deprecated. Rely on Application.isDebugging() instead.
boolean	isIdentityCheck() Indicates if the identity check (as specified by RFC1413) is enabled.
boolean	isLoggable(Request request) Indicates if the call should be logged during the processing chain.
protected void	setDebugging(boolean debugging) Deprecated. Rely on Application.setDebugging(boolean) instead.
void	setIdentityCheck(boolean identityCheck) Indicates if the identity check (as specified by RFC1413) is enabled.
void	setLoggableTemplate(java.lang.String loggableTemplateRef) Sets the URI template of loggable resource references.
void	setLoggableTemplate(Template loggableTemplate) Sets the URI template of loggable resource references.
void	setLoggerName(java.lang.String name) Sets the name of the JDK's logger to use when logging access calls.
void	setLogPropertiesRef(Reference logPropertiesRef) Sets the URI reference of the log properties.
void	setLogPropertiesRef(java.lang.String logPropertiesUri) Sets the URI reference of the log properties.
void	setResponseLogFormat(java.lang.String responseLogFormat) Sets the format to use when logging responses.
void	start() Starts the log service by attempting to read the log properties if the getLogPropertiesRef() returns a non null URI reference.

Methods inherited from class org.restlet.service.Service

createOutboundFilter, getContext, isEnabled, isStarted, isStopped, setContext, setEnabled, stop

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

responseLogTemplate

protected volatile Template responseLogTemplate

The response log template to use.

Constructor Detail

LogService

public LogService()

Constructor.

LogService

public LogService(boolean enabled)

Constructor.

Parameters:

enabled - True if the service has been enabled.

Method Detail

createInboundFilter

public Filter createInboundFilter(Context context)

Description copied from class: Service

Create the filter that should be invoked for incoming calls.

Overrides:

createInboundFilter in class Service

Parameters:

context - The current context.

Returns:

The new filter or null.

getDefaultResponseLogMessage

protected java.lang.String getDefaultResponseLogMessage(Response response,
                                                        int duration)

Format a log entry using the default IIS log format.

Parameters:

response - The response to log.

duration - The call duration (in milliseconds).

Returns:

The formatted log entry.

getLoggableTemplate

public Template getLoggableTemplate()

Returns the URI template of loggable resource references. Returns null by default, meaning the all requests are loggable, independant of their target resource URI reference.

Returns:

The URI template of loggable resource references.

See Also:

Request.getResourceRef()

getLoggerName

public java.lang.String getLoggerName()

Returns the name of the JDK's logger to use when logging access calls. The default name will follow this pattern: "org.restlet.MyComponent.LogService", where "MyComponent" will correspond to the simple class name of your component subclass or to the base "Component" class.

Returns:

The name of the JDK's logger to use when logging access calls.

getLogPropertiesRef

public Reference getLogPropertiesRef()

Returns the URI reference of the log properties.

Returns:

The URI reference of the log properties.

getResponseLogFormat

public java.lang.String getResponseLogFormat()

Returns the format used when logging responses.

Returns:

The format used, or null if the default one is used.

See Also:

for format syntax and variables.

getResponseLogMessage

public java.lang.String getResponseLogMessage(Response response,
                                              int duration)

Format an access log entry. If the log template property isn't provided, then a default IIS like format is used.

Parameters:

response - The response to log.

duration - The call duration.

Returns:

The formatted log entry.

isDebugging

@Deprecated
protected boolean isDebugging()

Deprecated. Rely on Application.isDebugging() instead.

Indicates if the debugging mode is enabled. False by default.

Returns:

True if the debugging mode is enabled.

isIdentityCheck

public boolean isIdentityCheck()

Indicates if the identity check (as specified by RFC1413) is enabled. Default value is false.

Returns:

True if the identity check is enabled.

isLoggable

public boolean isLoggable(Request request)

Indicates if the call should be logged during the processing chain. By default, it tries to match the request URI with the getLoggableTemplate() URI template otherwise is returns true.

Parameters:

request - The request to log.

Returns:

True if the call should be logged during the processing chain.

setDebugging

@Deprecated
protected void setDebugging(boolean debugging)

Deprecated. Rely on Application.setDebugging(boolean) instead.

Indicates if the debugging mode is enabled.

Parameters:

debugging - True if the debugging mode is enabled.

setIdentityCheck

public void setIdentityCheck(boolean identityCheck)

Indicates if the identity check (as specified by RFC1413) is enabled.

Parameters:

identityCheck - True if the identity check is enabled.

setLoggableTemplate

public void setLoggableTemplate(java.lang.String loggableTemplateRef)

Sets the URI template of loggable resource references.

Parameters:

loggableTemplateRef - The URI template of loggable resource references.

See Also:

setLoggableTemplate(Template)

setLoggableTemplate

public void setLoggableTemplate(Template loggableTemplate)

Sets the URI template of loggable resource references.

Parameters:

loggableTemplate - The URI template of loggable resource references.

setLoggerName

public void setLoggerName(java.lang.String name)

Sets the name of the JDK's logger to use when logging access calls.

Parameters:

name - The name of the JDK's logger to use when logging access calls.

setLogPropertiesRef

public void setLogPropertiesRef(Reference logPropertiesRef)

Sets the URI reference of the log properties.

Parameters:

logPropertiesRef - The URI reference of the log properties.

setLogPropertiesRef

public void setLogPropertiesRef(java.lang.String logPropertiesUri)

Sets the URI reference of the log properties.

Parameters:

logPropertiesUri - The URI reference of the log properties.

setResponseLogFormat

public void setResponseLogFormat(java.lang.String responseLogFormat)

Sets the format to use when logging responses. The default format matches the one of IIS 6.

Parameters:

responseLogFormat - The format to use when logging responses.

See Also:

for format syntax and variables.

start

public void start()
           throws java.lang.Exception

Starts the log service by attempting to read the log properties if the getLogPropertiesRef() returns a non null URI reference.

Overrides:

start in class Service

Throws:

java.lang.Exception