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h1. Logging in Petals ESB

Petals ESB uses two distinct logging systems. Most of the container apart form the registry uses the logger provided by the JDK, while

the registry uses Apache log4j.

The Petals ESB logger configuration is splitted into two files:
* $PETALS_HOME/conf/loggers.properties: the JDK logger configuration.
* $PETALS_HOME/conf/log4j.properties: the log4j logger configuration.
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{panel:title=Petals logging Documentations}{children:all=true}{panel}
{panel:title=Contributors}{contributors:order=name|mode=list}{panel}
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{section}

h2. Petals Logger Levels

Petals defines a specific level: MONIT.

MONIT level can be used by a log parser to monitor the exchange in Petals ESB.


The levels provided by Petals in descending order are:
* SEVERE (highest value)
* WARNING
* INFO
* CONFIG
* *MONIT*
* FINE
* FINER
* FINEST (lowest value)

The default root logger level is WARNING. It means that all classes log only SEVERE and WARNING information.

You can enable logging and specify a specific level for each module (container, component, cdk...). Here is how you would set debugging from Petals. You would need to ensure the Handler's level is also set to collect this threshold, so FINEST or ALL should be set.
{code}
##Petals level
Petals.level = FINEST

#Handler Configuration
java.util.logging.ConsoleHandler.level = FINEST
{code}

Example of configuration to debug (Level FINEST) petals-bc-soap component:
{code}
##Petals level
Petals.level = INFO #Log level for all petals services
Petals.Container.Components.petals-bc-soap.level = FINEST #Log level for petals-bc-soap component

#Handler Configuration
java.util.logging.ConsoleHandler.level = FINEST
{code}

h2. Petals formatters

Petals provides two formatters: PetalsSimpleFormatter and PetalsExtendedFormatter.

PetalsSimpleFormatter uses the following pattern:
{panel:borderStyle=solid}{+}YYYY/MM/DD+ +HH:MM:SS,FFF+ +LOG LEVEL+ +LOGGER NAME+ : ?\[LOG MESSAGE\]
\[EXTRA DATA KEY\] = '\[EXTRA DATA VALUE\]'
\[JAVA EXCEPTION\]{panel}


PetalsExtendedFormatter is used to log message content (payload XML of SOAP or JBI Message), attachments name and properties.

The pattern of PetalsExtendedFormatter inherits from the pattern of PetalsSimpleFormatter.

*Example of logging output with PetalsSimpleFormatter:*
{panel:borderStyle=solid}
2011/03/16 14:04:20,829 MONIT \[Petals.Container.Components.petals-bc-soap\] : External request received
client = '192.168.1.95'
processBranchId = '0'
processInstanceId = 'petals:uid:e871ffb0-4fcd-11e0-b428-00123feb3632'
processLoopId = '0'
requestedUrl = 'http://192.168.1.95:8080/petals/services/LoggerDemoService/'
traceCode = 'MON005'
{panel}

*Example of logging output with PetalsExtendedFormatter:*
{panel:borderStyle=solid}
2011/03/16 15:57:33,798 MONIT \[Petals.Container.Components.petals-bc-soap\] : External request received
attachmentNames = ''
client = '192.168.1.95'
processBranchId = '0'
processInstanceId = 'petals:uid:b95be910-4fdd-11e0-b678-00123feb3632'
processLoopId = '0'
requestedUrl = 'http://192.168.1.95:8080/petals/services/LoggerDemoService/'
soapEnvelope = '<?xml version='1.0' encoding='utf-8'?><soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:log="http://petals.ow2.org/bpel/LoggerDemo/"><soapenv:Body>
<log:LoggerDemoRequest>
<log:input>test</log:input>
</log:LoggerDemoRequest>
</soapenv:Body></soapenv:Envelope>'
traceCode = 'MON005'
{panel}

{builder-infopanel:The performance of Petals ESB is reduced when the PetalsExtendendFormatter is activate.}
{info:title=Default behavior}One or both previous formatters are always used during execution, unless default handler formatters in ../conf/logger.properties are changed
{info}
If following formatter is applied for both handlers:

*java.util.logging.FileHandler.formatter = org.ow2.petals.commons.logger.PetalsSimpleFormatter*
*java.util.logging.ConsoleHandler.formatter = org.ow2.petals.commons.logger.PetalsSimpleFormatter*

All logs are processed by the PetalsSimpleFormatter whether we are in _FINEST{_}_, SEVERE, CONFIG ... MONIT_, but

the both previous log traces are written if the level *MONIT* is precised.

h2. Specifics log informations

Following informations are +common{+}{+}s+ to both formatters:
* Timestamp
* Logger level
* Logger component name
* Log message
* Process branch identifier
* Process instance identifier
* Process loop identifier
* Trace code

We can found more informations about previous concepts in glossary [Glossary|http://doc.petalslink.com/display/glossary/Petals+ESB+specific+vocabulary]

we can recover following additionnal informations:
* Requested URL
* Soap enveloppe content
* Attachment names
* Client IP
&nbsp;
&nbsp;
{tip:title=Multiple formatter utilizations}We can also use both formatter for different purposes
&nbsp;
* If you don't want too much information in Petals console, we can keep the *"Simple"* formatter with following property:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; java.util.logging.ConsoleHandler.formatter = org.ow2.petals.commons.logger.PetalsSimpleFormatter
&nbsp;

&nbsp;
{warning:title=Environment variable}
Take in account if the following variable is define or not:

_\-Djava.util.logging.config.file=$PETALS_HOME/conf/loggers.properties"_

Because, if the previous argument on your Petals process is setted to another logging file, the loggers.properties under /conf +will not be take in account+.

This setting can create a real problem, you do not necessarily understand where it comes directly
{warning}


h2. Appendix

h3. Default loggers.properties

The default *loggers.properties* is :
{noformat}# PETALS: PETALS Services Platform

# Copyright (C) 2005 EBM WebSourcing

#

# This library is free software; you can redistribute it and/or

# modify it under the terms of the GNU Lesser General Public

# License as published by the Free Software Foundation; either

# version 2.1 of the License, or any later version.

#

# This library is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

# Lesser General Public License for more details.

#

# You should have received a copy of the GNU Lesser General Public

# License along with this library; if not, write to the Free Software

# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307

# USA.

#

# Initial developer(s): EBM WebSourcing





handlers=java.util.logging.FileHandler, java.util.logging.ConsoleHandler



java.util.logging.FileHandler.level = FINEST

java.util.logging.FileHandler.pattern = ${petals.home}/logs/petals.log

java.util.logging.FileHandler.formatter = org.ow2.petals.commons.logger.PetalsSimpleFormatter

java.util.logging.FileHandler.append = true



java.util.logging.ConsoleHandler.level = FINEST

java.util.logging.ConsoleHandler.formatter = org.ow2.petals.commons.logger.PetalsSimpleFormatter



##Root level

.level = FINEST



##Petals level

Petals.level = FINEST



#Petals.PetalsAdminService.level = FINEST

#Petals.AutoLoaderService.level = FINEST

#Petals.ConfigurationService.level = FINEST



#Petals.Container.level = FINEST

#Petals.Container.ContainerService.level = FINEST

#Petals.Container.Components.level = FINEST



#Petals.Container.Lifecycle.level = FINEST

#Petals.Container.Lifecycle.ComponentLifeCycle.level = FINEST

#Petals.Container.Lifecycle.Installer.level = FINEST

#Petals.Container.Lifecycle.ServiceAssemblyLifeCycle.level = FINEST

#Petals.Container.Lifecycle.SharedLibraryLifeCycle.level = FINEST



#Petals.Communication.level = FINEST

#Petals.Communication.TopologyService.level = FINEST

#Petals.Communication.JNDIAgentService.level = FINEST

#Petals.Communication.JNDIService.level = FINEST

#Petals.Communication.JMXService.level = FINEST

#Petals.Communication.RMIConnector.level = FINEST

#Petals.Communication.RemoteCheckerClient.level = FINEST



#Petals.Tools.WebServiceManager.level = FINEST



#Petals.System.level = FINEST

#Petals.System.PersistenceService.level = FINEST

#Petals.System.LoaderManagerService.level = FINEST

#Petals.System.SystemStateService.level = FINEST

#Petals.System.RepositoryService.level = FINEST

#Petals.System.Artifact.FractalArtifactRepositoryService.level = FINEST



#Petals.JBI-Management.level = FINEST

#Petals.JBI-Management.AdminService.level = FINEST

#Petals.JBI-Management.SystemRecoveryService.level = FINEST

#Petals.JBI-Management.InstallationService.level = FINEST

#Petals.JBI-Management.ComponentInstallationService.level = FINEST

#Petals.JBI-Management.DeploymentService.level = FINEST

#Petals.JBI-Management.AtomicDeploymentService.level = FINEST

#Petals.JBI-Management.TransactionManager.level = FINEST



#Petals.JBI-Messaging.level = FINEST

#Petals.JBI-Messaging.RouterMonitorService.level = FINEST

#Petals.JBI-Messaging.RouterService.level = FINEST

#Petals.JBI-Messaging.FlowControllerModule.level = FINEST

#Petals.JBI-Messaging.FlowFilterModule.level = FINEST

#Petals.JBI-Messaging.PriorityOrdererModule.level = FINEST

#Petals.JBI-Messaging.TransportResolverModule.level = FINEST

#Petals.JBI-Messaging.AuthorizationModule.level = FINEST

#Petals.JBI-Messaging.EndpointResolverModule.level = FINEST

#Petals.JBI-Messaging.JAASAuthenticationModule.level = FINEST

#Petals.JBI-Messaging.PriorityOrdererModule.level = FINEST

#Petals.JBI-Messaging.EndpointRegistry.level = FINEST

#Petals.JBI-Messaging.JMXExchangeCheckerClient.level = FINEST



#Petals.JBI-Component.ComponentContext.level = FINEST



#Petals.Transporter.level = FINEST

#Petals.Transporter.LocalTransporter.level = FINEST

#Petals.Transporter.NioTransporter.level = FINEST

#Petals.Transporter.NioTransportProtocol.NioSelectorAgent.level = FINEST

#Petals.Transporter.NioTransportProtocol.NioServerAgent.level = FINEST

#Petals.Transporter.NioTransportProtocol.NioClientObjectPool.level = FINEST



#Petals.WS.level = FINEST

#Petals.WS.ArtifactRepositoryService.level = FINEST

#Petals.WS.DeploymentService.level = FINEST

#Petals.WS.DragonConnectionService.level = FINEST

#Petals.WS.EndpointService.level = FINEST

#Petals.WS.InformationService.level = FINEST

#Petals.WS.InstallationService.level = FINEST

#Petals.WS.JBIArtefactsService.level = FINEST

#Petals.WS.RuntimeService.level = FINEST

#Petals.WS.ServiceAssemblyStateService.level = FINEST

#Petals.WS.TopologyService.level = FINEST







{noformat}




h3. Default log4j.properties

The default *log4j.properties* is :
{noformat}# Set the options for the Console appender.
# Console's layout is a PatternLayout, using the conversion pattern
# %d: current date in ISO8601 format
# %p: priority of the logging event
# %c: category name
# %m: the message
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.layout=org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=%d %-5p %c{3} %m\n

# Root logger set to INFO using the Console appender defined above.
log4j.rootLogger=fatal,Console

######################
# Logger definitions #
######################

# CXF logger #
#log4j.logger.org.apache.cxf=fatal,Console
#log4j.additivity.org.apache.cxf=true

# Hibernate logger #
log4j.logger.org.hibernate=fatal,Console
log4j.additivity.org.hibernate=true

# Registry logger #
log4j.logger.org.ow2.petals.registry=fatal,Console
log4j.additivity.org.ow2.petals.registry=true{noformat}


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