123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170 |
- /*
- * Copyright (c) 2006-2017 DMDirc Developers
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
- * documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
- * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
- * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
- * OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
- package com.dmdirc.util;
-
- import com.dmdirc.logger.ErrorLevel;
-
- import ch.qos.logback.classic.Level;
- import ch.qos.logback.classic.spi.ILoggingEvent;
- import ch.qos.logback.classic.spi.IThrowableProxy;
- import ch.qos.logback.classic.spi.StackTraceElementProxy;
-
- import java.lang.reflect.Constructor;
- import java.lang.reflect.InvocationTargetException;
-
- import javax.annotation.Nonnull;
- import javax.annotation.Nullable;
-
- import org.slf4j.Marker;
- import org.slf4j.MarkerFactory;
-
- /**
- * Utility methods for logging in the client.
- */
- public final class LogUtils {
-
- public static final Marker USER_ERROR = MarkerFactory.getMarker("UserError");
- public static final Marker APP_ERROR = MarkerFactory.getMarker("AppError");
- public static final Marker FATAL_USER_ERROR = MarkerFactory.getMarker("FatalUserError");
- public static final Marker FATAL_APP_ERROR = MarkerFactory.getMarker("FatalAppError");
-
- private LogUtils() {
- }
-
- /**
- * Converts a SLF4J {@link Level} into a DMDirc {@link ErrorLevel}
- *
- * @param level Error to convert
- *
- * @return Converted error
- */
- @Nonnull
- public static ErrorLevel getErrorLevel(@Nonnull final Level level) {
- if (level.equals(Level.ERROR)) {
- return ErrorLevel.HIGH;
- } else if (level.equals(Level.WARN)) {
- return ErrorLevel.MEDIUM;
- } else if (level.equals(Level.INFO)) {
- return ErrorLevel.LOW;
- } else {
- return ErrorLevel.UNKNOWN;
- }
- }
-
- /**
- * Converts the {@link IThrowableProxy} from an SLF4J {@link ILoggingEvent} into a
- * {@link Throwable}.
- *
- * @param eventObject Event containing the {@link IThrowableProxy}
- *
- * @return {@link Throwable} representation of the {@link IThrowableProxy} or {@code null} if
- * there is no {@link IThrowableProxy} present.
- */
- @Nullable
- public static Throwable getThrowable(final ILoggingEvent eventObject) {
- if (eventObject.getThrowableProxy() == null) {
- return null;
- }
- try {
- return getThrowable(eventObject.getThrowableProxy());
- } catch (ReflectiveOperationException ex) {
- return new IllegalStateException("Error converting exception", ex);
- }
- }
-
- /**
- * Converts a SLF4J {@link IThrowableProxy} into a {@link Throwable}.
- *
- * @param proxy {@link IThrowableProxy} to convert
- *
- * @return {@link Throwable} representation of the {@link IThrowableProxy}
- *
- * @throws ReflectiveOperationException If an error ocurred creating the real {@link Throwable}
- */
- @Nonnull
- public static Throwable getThrowable(@Nonnull final IThrowableProxy proxy)
- throws ReflectiveOperationException {
- final Class<? extends Throwable> clazz = getThrowableClass(proxy.getClassName());
- Throwable throwable = null;
- if (proxy.getCause() == null) {
- // Just find a constructor that takes a string.
- final Constructor<? extends Throwable> ctor =
- clazz.getDeclaredConstructor(String.class);
- throwable = ctor.newInstance(proxy.getMessage());
- } else if (clazz == InvocationTargetException.class) {
- // We don't care about the InvocationTargetException, unwrap it.
- return getThrowable(proxy.getCause());
- } else {
- // Try and find a constructor that takes a string and a throwable.
- for (Constructor<?> ctor : clazz.getDeclaredConstructors()) {
- if (ctor.getParameterCount() == 2) {
- final Class<?>[] parameterTypes = ctor.getParameterTypes();
- if (parameterTypes[0] == String.class && parameterTypes[1] == Throwable.class) {
- throwable = (Throwable) ctor.newInstance(
- proxy.getMessage(), getThrowable(proxy.getCause()));
- break;
- } else if (parameterTypes[1] == String.class
- && parameterTypes[0] == Throwable.class) {
- throwable = (Throwable) ctor.newInstance(
- getThrowable(proxy.getCause()), proxy.getMessage());
- break;
- }
- }
- }
-
- if (throwable == null) {
- try {
- // Or maybe just a throwable?
- throwable = clazz.getConstructor(Throwable.class).newInstance(getThrowable(proxy.getCause()));
- } catch (NoSuchMethodException ex) {
- try {
- throwable = clazz.getConstructor(String.class).newInstance(proxy.getMessage());
- } catch (NoSuchMethodException ex2) {
- // *Shrug*
- throw new ReflectiveOperationException("Unable to find ctor of " + clazz);
- }
- }
- }
- }
- throwable.setStackTrace(getStackTraceElements(proxy.getStackTraceElementProxyArray()));
- return throwable;
- }
-
- /**
- * Converts an SLF4F {@link StackTraceElementProxy}[] into a {@link StackTraceElement}[].
- *
- * @param elements {@link StackTraceElementProxy}s to convert
- *
- * @return Non null {@link StackTraceElement}[] of the input
- */
- @Nonnull
- public static StackTraceElement[] getStackTraceElements(
- final StackTraceElementProxy... elements) {
- final StackTraceElement[] returnValue = new StackTraceElement[elements.length];
- for (int i = 0; i < elements.length; i++) {
- returnValue[i] = elements[i].getStackTraceElement();
- }
- return returnValue;
- }
-
- @SuppressWarnings("unchecked")
- private static Class<Throwable> getThrowableClass(final String string)
- throws ClassNotFoundException {
- return (Class<Throwable>) Class.forName(string);
- }
- }
|