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This article introduces what is the role of LogbackContainer in dubbo, the content is very detailed, interested friends can refer to, hope to be helpful to you.

LogbackContainer

Dubbo-2.7.2/dubbo-container/dubbo-container-logback/src/main/java/org/apache/dubbo/container/logback/LogbackContainer.java

Public class LogbackContainer implements Container {public static final String LOGBACK_FILE = "dubbo.logback.file"; public static final String LOGBACK_LEVEL = "dubbo.logback.level"; public static final String LOGBACK_MAX_HISTORY = "dubbo.logback.maxhistory"; public static final String DEFAULT_LOGBACK_LEVEL = "ERROR"; @ Override public void start () {String file = ConfigUtils.getProperty (LOGBACK_FILE) If (file! = null & & file.length () > 0) {String level = ConfigUtils.getProperty (LOGBACK_LEVEL); if (StringUtils.isEmpty (level)) {level = DEFAULT_LOGBACK_LEVEL;} / / maxHistory=0 Infinite history int maxHistory= StringUtils.parseInteger (ConfigUtils.getProperty (LOGBACK_MAX_HISTORY)); doInitializer (file, level, maxHistory) } @ Override public void stop () {} / * Initializer logback * * @ param file * @ param maxHistory * / private void doInitializer (String file, String level, int maxHistory) {LoggerContext loggerContext = (LoggerContext) LoggerFactory.getILoggerFactory (); Logger rootLogger = loggerContext.getLogger (Logger.ROOT_LOGGER_NAME); rootLogger.detachAndStopAllAppenders () / / appender RollingFileAppender fileAppender = new RollingFileAppender (); fileAppender.setContext (loggerContext); fileAppender.setName ("application"); fileAppender.setFile (file); fileAppender.setAppend (true); / / policy TimeBasedRollingPolicy policy = new TimeBasedRollingPolicy (); policy.setContext (loggerContext); policy.setMaxHistory (maxHistory); policy.setFileNamePattern (file + ".% d {yyyy-MM-dd}") Policy.setParent (fileAppender); policy.start (); fileAppender.setRollingPolicy (policy); / / encoder PatternLayoutEncoder encoder = new PatternLayoutEncoder (); encoder.setContext (loggerContext); encoder.setPattern ("% date [% thread]%-5level% logger (% file:%line\) -% msg%n"); encoder.start (); fileAppender.setEncoder (encoder); fileAppender.start () RootLogger.addAppender (fileAppender); rootLogger.setLevel (Level.toLevel (level)); rootLogger.setAdditive (false);}}

LogbackContainer implements the Container interface, and its start method determines whether there is a specified dubbo.logback.file. If so, it further gets the dubbo.logback.level. If it is empty, it defaults to the ERROR level, and then gets the dubbo.logback.maxhistory. Finally, it calls the doInitializer;doInitializer method to get the rootLogger, then executes the detachAndStopAllAppenders, then configures the RollingFileAppender, specifies policy as TimeBasedRollingPolicy, sets PatternLayoutEncoder, then starts fileAppender, and adds it to the rootLogger.

Example

Dubbo-2.7.2/dubbo-container/dubbo-container-logback/src/test/java/org/apache/dubbo/container/logback/LogbackContainerTest.java

Public class LogbackContainerTest {private static final Logger logger = LoggerFactory.getLogger (LogbackContainerTest.class); @ Test public void testContainer () {LogbackContainer container = (LogbackContainer) ExtensionLoader.getExtensionLoader (Container.class) .getExtension ("logback"); container.start (); logger.debug ("Test debug:" + this.getClass (). GetName ()); logger.warn ("Test warn:" + this.getClass (). GetName ()) Logger.info ("Test info:" + this.getClass (). GetName ()); logger.error ("Test error:" + this.getClass (). GetName ()); container.stop ();}}

This is verified by starting the container of logback and then using the logger output

Summary

LogbackContainer implements the Container interface, and its start method determines whether there is a specified dubbo.logback.file. If so, it further gets the dubbo.logback.level. If it is empty, it defaults to the ERROR level, and then gets the dubbo.logback.maxhistory. Finally, it calls the doInitializer;doInitializer method to get the rootLogger, then executes the detachAndStopAllAppenders, then configures the RollingFileAppender, specifies policy as TimeBasedRollingPolicy, sets PatternLayoutEncoder, then starts fileAppender, and adds it to the rootLogger.

About what the role of LogbackContainer in dubbo is shared here, I hope the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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