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Try a cleaner stdout/stderr -> logger redirector

This commit is contained in:
Marc Baloup 2023-03-17 15:41:39 +01:00
parent ff5d776aa5
commit 5b40c4aabb
1 changed files with 32 additions and 8 deletions
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40
pandalib-cli/src/main/java/fr/pandacube/lib/cli/log/CLILogger.java
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@ -1,15 +1,18 @@
package fr.pandacube.lib.cli.log;
import java.io.PrintStream;
import java.util.logging.Handler;
import java.util.logging.Level;
import java.util.logging.Logger;
import fr.pandacube.lib.cli.CLI;
import fr.pandacube.lib.util.Log;
import fr.pandacube.lib.util.ThrowableUtil;
import net.md_5.bungee.log.ColouredWriter;
import net.md_5.bungee.log.ConciseFormatter;
import net.md_5.bungee.log.LoggingOutputStream;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;
import java.io.PrintStream;
import java.util.Scanner;
import java.util.logging.Handler;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Initializer for the logging system of a CLI application.
@ -38,12 +41,33 @@ public class CLILogger {
fileHandler.setFormatter(new ConciseFormatter(false));
logger.addHandler(fileHandler);
System.setErr(new PrintStream(new LoggingOutputStream(logger, Level.SEVERE), true));
System.setOut(new PrintStream(new LoggingOutputStream(logger, Level.INFO), true));
System.setErr(newRedirector(logger, Level.SEVERE));
System.setOut(newRedirector(logger, Level.INFO));
Log.setLogger(logger);
}
return logger;
}
private static PrintStream newRedirector(Logger logger, Level level) {
PipedOutputStream pos = new PipedOutputStream();
PrintStream ps = new PrintStream(pos);
PipedInputStream pis = new PipedInputStream();
ThrowableUtil.wrapEx(() -> pos.connect(pis));
Scanner s = new Scanner(pis);
Thread t = new Thread(() -> {
while(s.hasNextLine()) {
logger.logp(level, "", "", s.nextLine());
}
s.close();
}, "Logging Redirector Thread (" + level + ")");
t.setDaemon(true);
t.start();
return ps;
}
}