logback / LOGBACK-1600 [Open] Re-create log if it gets deleted at runtime on Unix/Linux ============================== Here's what changed in this issue in the last few minutes. This issue has been created This issue is now assigned to you. View or comment on issue using this link https://jira.qos.ch/browse/LOGBACK-1600 ============================== Issue created ------------------------------ junmoKang created this issue on 21/Dec/21 2:51 AM Summary: Re-create log if it gets deleted at runtime on Unix/Linux Issue Type: Improvement Affects Versions: 1.2.0 Assignee: Logback dev list Components: logback-core Created: 21/Dec/21 2:51 AM Environment: CentOS-7 window 10 logback-core 1.2.0 logback-classic-1.2.0 Priority: Major Reporter: junmoKang Description: in logback version 1.1.2~1.1.9, it re-creates log files when get deleting at runtime on Unix/Linux. It works normally. I used logback version 1.1.2, and I saw this article and applied this my project using logback. https://jira.qos.ch/browse/LOGBACK-1004 But, I upgraded version 1.1.2 -> 1.2.9 and it did not re create log files when it gets deleted at runtime on Unix/Linux. I think it's because FileAppender class's writeOut method not invoked. FileAppender class's writeOut method overrieds OutputStreamAppender class's writeOut method. I saw this news from the logback's news. h3. February 8th, 2017, Release of version 1.2.0 h4. {{Encoder}} interface has changed and is no longer expected to handle an {{OutputStream}}. {{Encoder}} interface has changed and is no longer expected to handle an {{OutputStream}}. This simplification allows finer-grain locking resulting in [significantly improved performance|https://docs.google.com/spreadsheets/d/1cpb5D7qnyye4W0RTlHUnXedYK98catNZytYI...]. Exactly, from logback version 1.2.0, it did not Re-create log if it gets deleted at runtime on Unix/Linux, because FileAppender class's writeOut method not invoked. I don't know why it is. this is my code's segment. I don't use logback.xml. Logger root = (Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME); LoggerContext context = (LoggerContext) LoggerFactory.getILoggerFactory() TimeBasedRollingPolicy<ILoggingEvent> timePolicy = new TimeBasedRollingPolicy<ILoggingEvent>(); timePolicy.setContext(context); WorldWritableFileAppender<ILoggingEvent> rollingFileAppender = new WorldWritableFileAppender<ILoggingEvent>(); timePolicy.setParent(rollingFileAppender); timePolicy.setFileNamePattern(logDir + "/" + fileNamePattern + "-" + product + "_%i.log." + compressFormat); timePolicy.setMaxHistory(maxHistory); timePolicy.setCleanHistoryOnStart(false); timePolicy.start(); SizeAndTimeBasedFNATP<ILoggingEvent> sizePolicy = new SizeAndTimeBasedFNATP<ILoggingEvent>(); sizePolicy.setContext(context); sizePolicy.setMaxFileSize(FileSize.valueOf(maxFileSize)); sizePolicy.setTimeBasedRollingPolicy(timePolicy); sizePolicy.start(); timePolicy.setTimeBasedFileNamingAndTriggeringPolicy(sizePolicy); timePolicy.start(); rollingFileAppender.setTriggeringPolicy(sizePolicy); rollingFileAppender.setRollingPolicy(timePolicy); PatternLayoutEncoder pl = new PatternLayoutEncoder(); pl.setContext(context); pl.setPattern(pattern); pl.start(); rollingFileAppender.setEncoder(pl); rollingFileAppender.start(); root.addAppender(rollingFileAppender); public class WorldWritableFileAppender<E> extends RollingFileAppender<E>{ private File file_ptr; @Override public void openFile(String file_name) throws IOException { if(file_name != null) { File file = new File(file_name); file_ptr = file; if (FileUtil.createMissingParentDirectories(file)) { XmUtil.grantPermissionAndCreateToFile(file.getParentFile(), true); } } super.openFile(file_name); if(file_name != null) { File f = new File(file_name); file_ptr = f; if (f.exists()) { XmUtil.grantPermissionAndCreateToFile(f, false, false); } } } @Override protected void writeOut(E event) throws IOException { if(file_ptr == null){ file_ptr = new File(getFile()); } if(!file_ptr.exists()){ super.openFile(getFile()); } super.writeOut(event); } } ============================== This message was sent by Atlassian Jira (v8.8.0#808000-sha1:e2c7e59)