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/*
* Copyright 2000-2013 JetBrains s.r.o.
*
* 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 com.intellij.openapi.diagnostic;
import com.intellij.util.ArrayUtil;
import com.intellij.util.ExceptionUtil;
import org.apache.log4j.Level;
import org.jetbrains.annotations.Contract;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.lang.reflect.Constructor;
public abstract class Logger {
public interface Factory {
Logger getLoggerInstance(String category);
}
private static class DefaultFactory implements Factory {
@Override
public Logger getLoggerInstance(String category) {
return new DefaultLogger(category);
}
}
private static Factory ourFactory = new DefaultFactory();
public static void setFactory(Class<? extends Factory> factory) {
if (isInitialized()) {
if (factory.isInstance(ourFactory)) {
return;
}
//noinspection UseOfSystemOutOrSystemErr
System.out.println("Changing log factory\n" + ExceptionUtil.getThrowableText(new Throwable()));
}
try {
Constructor<? extends Factory> constructor = factory.getDeclaredConstructor();
constructor.setAccessible(true);
ourFactory = constructor.newInstance();
}
catch (Exception e) {
//noinspection CallToPrintStackTrace
e.printStackTrace();
throw new RuntimeException(e);
}
}
public static boolean isInitialized() {
return !(ourFactory instanceof DefaultFactory);
}
public static Logger getInstance(@NonNls String category) {
return ourFactory.getLoggerInstance(category);
}
@NotNull
public static Logger getInstance(Class cl) {
return getInstance("#" + cl.getName());
}
public abstract boolean isDebugEnabled();
public abstract void debug(@NonNls String message);
public abstract void debug(@Nullable Throwable t);
public abstract void debug(@NonNls String message, @Nullable Throwable t);
public void debug(@NotNull String message, Object... details) {
if (isDebugEnabled()) {
StringBuilder sb = new StringBuilder();
sb.append(message);
for (Object detail : details) {
sb.append(String.valueOf(detail));
}
debug(sb.toString());
}
}
public void info(@NotNull Throwable t) {
info(t.getMessage(), t);
}
public abstract void info(@NonNls String message);
public abstract void info(@NonNls String message, @Nullable Throwable t);
public void warn(@NonNls String message) {
warn(message, null);
}
public void warn(@NotNull Throwable t) {
warn(t.getMessage(), t);
}
public abstract void warn(@NonNls String message, @Nullable Throwable t);
public void error(@NonNls String message) {
error(message, new Throwable(), ArrayUtil.EMPTY_STRING_ARRAY);
}
public void error(Object message) {
error(String.valueOf(message));
}
public void error(@NonNls String message, Attachment... attachments) {
error(message);
}
public void error(@NonNls String message, @NonNls String... details) {
error(message, new Throwable(), details);
}
public void error(@NonNls String message, @Nullable Throwable e) {
error(message, e, ArrayUtil.EMPTY_STRING_ARRAY);
}
public void error(@NotNull Throwable t) {
error(t.getMessage(), t, ArrayUtil.EMPTY_STRING_ARRAY);
}
public abstract void error(@NonNls String message, @Nullable Throwable t, @NonNls @NotNull String... details);
@Contract("false,_->fail") // wrong, but avoid quite a few warnings in the code
public boolean assertTrue(boolean value, @Nullable @NonNls Object message) {
if (!value) {
@NonNls String resultMessage = "Assertion failed";
if (message != null) resultMessage += ": " + message;
error(resultMessage, new Throwable());
}
//noinspection Contract
return value;
}
@Contract("false->fail") // wrong, but avoid quite a few warnings in the code
public boolean assertTrue(boolean value) {
return value || assertTrue(false, null);
}
public abstract void setLevel(Level level);
}
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