/
JulLoggerCreator.sarl
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JulLoggerCreator.sarl
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/*
* $Id$
*
* SARL is an general-purpose agent programming language.
* More details on http://www.sarl.io
*
* Copyright (C) 2014-2020 the original authors or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.sarl.sre.services.logging.jul
import io.sarl.sre.boot.configs.SreConfig
import io.sarl.sre.boot.configs.subconfigs.LoggingConfig
import java.util.logging.Formatter
import java.util.logging.Level
import java.util.logging.LogManager
import java.util.logging.Logger
import javax.inject.Provider
/**
* Helper for creating a JUL logger.
*
* @author $Author: sgalland$
* @version $FullVersion$
* @mavengroupid $GroupId$
* @mavenartifactid $ArtifactId$
*/
class JulLoggerCreator {
/** Prefix for the logger names. */
public static val PLATFORM_LOGGER_NAME_PREFIX = "Janus-SRE-"
val defaultLevel : Level
val configProvider : Provider<SreConfig>
val loggerProvider : (String)=>Logger
var config : LoggingConfig
var defaultProgramName : String
var platformFormatter : Formatter
/** Build a logger creator.
*
* @param defaultLevel the logging level for new loggers.
* @param configProvider the provider of SRE configuration.
* @param loggerProvider the provider of loggers to use; if {@code null}, the default JUL log manager is used.
*/
new (defaultLevel : Level, configProvider : Provider<SreConfig>, loggerProvider : (String)=>Logger = null) {
this.defaultLevel = defaultLevel
this.configProvider = configProvider
if (loggerProvider === null) {
this.loggerProvider = [ Logger::getLogger(it) ]
} else {
this.loggerProvider = loggerProvider
}
}
/** Replies the log formatter for the SRE kernel.
*
* @return the log formatter, never {@code null}.
*/
synchronized def getPlatformFormatter : Formatter {
if (this.platformFormatter === null) {
this.platformFormatter = createPlatformFormatter
}
return this.platformFormatter
}
/** Change the log formatter for the SRE kernel.
*
* @param formatter the log formatter, or {@code null} to use the default.
*/
synchronized def setPlatformFormatter(formatter : Formatter) {
this.platformFormatter = formatter
}
/** Create a formatter for the SRE kernel.
*
* @return the newly created instance of formatter.
*/
protected def createPlatformFormatter : Formatter {
new JulPatternFormatter(this.loggingConfig.platformMessageFormat)
}
protected def getLoggingConfig : LoggingConfig {
if (this.config === null) {
this.config = this.configProvider.get.services.logging
}
return this.config
}
protected def getProgramName : String {
if (this.defaultProgramName.isNullOrEmpty) {
this.defaultProgramName = this.configProvider.get.boot.programName
}
return this.defaultProgramName
}
/**
* Create a logger for the platform.
*
* @return the logger.
* @since 0.7.0
*/
def createPlatformLogger() : Logger {
LogManager::logManager.reset
val kernelId = this.configProvider.get.boot.rootContextID
val loggerName = PLATFORM_LOGGER_NAME_PREFIX + kernelId
val logger = this.loggerProvider.apply(loggerName)
assert logger !== null
val formatter = getPlatformFormatter
assert formatter !== null
val stderr = new JulStandardErrorOutputConsoleHandler(formatter)
stderr.level = Level::ALL
val stdout = new JulStandardOutputConsoleHandler(formatter)
stdout.level = Level::ALL
var allHandlers = logger.handlers
if (allHandlers !== null) {
for (handler : allHandlers) {
logger.removeHandler(handler)
}
}
logger.addHandler(stderr)
logger.addHandler(stdout)
logger.useParentHandlers = false
logger.level = this.defaultLevel
return logger
}
/**
* Create a logger with the given name for a platform module (kernel or agent).
*
* @param name the name of the new logger. If {@code null}, the default program name is used.
* @param parent the parent logger.
* @return the logger.
* @since 0.7.0
*/
def createModuleLogger(name : String = null, parent : Logger) : Logger {
val thename = if (name.isNullOrEmpty) {
this.programName
} else {
name
}
val logger = this.loggerProvider.apply(thename)
if (parent !== null) {
logger.parent = parent
logger.useParentHandlers = true
}
logger.level = this.defaultLevel
return logger
}
}