tdlight/example/java/org/drinkless/tdlib/Log.java

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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
package org.drinkless.tdlib;
/**
* Class for managing internal TDLib logging.
*/
public final class Log {
/**
* Changes TDLib log verbosity.
*
* @param verbosityLevel New value of log verbosity level. Must be non-negative.
* Value 0 corresponds to fatal errors,
* value 1 corresponds to java.util.logging.Level.SEVERE,
* value 2 corresponds to java.util.logging.Level.WARNING,
* value 3 corresponds to java.util.logging.Level.INFO,
* value 4 corresponds to java.util.logging.Level.FINE,
* value 5 corresponds to java.util.logging.Level.FINER,
* value greater than 5 can be used to enable even more logging.
* Default value of the log verbosity level is 5.
*/
public static native void setVerbosityLevel(int verbosityLevel);
/**
* Sets file path for writing TDLib internal log. By default TDLib writes logs to the System.err.
* Use this method to write the log to a file instead.
*
* @param filePath Path to a file for writing TDLib internal log. Use an empty path to
* switch back to logging to the System.err.
* @return whether opening the log file succeeded
*/
public static native boolean setFilePath(String filePath);
/**
* Changes maximum size of TDLib log file.
*
* @param maxFileSize Maximum size of the file to where the internal TDLib log is written
* before the file will be auto-rotated. Must be positive. Defaults to 10 MB.
*/
public static native void setMaxFileSize(long maxFileSize);
/**
* This function is called from the JNI when a fatal error happens to provide a better error message.
* The function does not return.
*
* @param errorMessage Error message.
*/
private static void onFatalError(String errorMessage) {
class ThrowError implements Runnable {
private ThrowError(String errorMessage) {
this.errorMessage = errorMessage;
}
@Override
public void run() {
throw new RuntimeException("TDLib fatal error: " + errorMessage);
}
private final String errorMessage;
}
new Thread(new ThrowError(errorMessage), "TDLib fatal error thread").start();
while (true) {
try {
Thread.sleep(1000); // milliseconds
} catch (InterruptedException ex) {
Thread.currentThread().interrupt();
}
}
}
}