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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko.background.common.log.writers;
import java.util.IdentityHashMap;
import java.util.Map;
import android.util.Log;
/**
* Make a <code>LogWriter</code> only log when the Android log system says to.
*/
public class AndroidLevelCachingLogWriter extends LogWriter {
protected final LogWriter inner;
public AndroidLevelCachingLogWriter(LogWriter inner) {
this.inner = inner;
}
// I can't believe we have to implement this ourselves.
// These aren't synchronized (and neither are the setters) because
// the logging calls themselves are synchronized.
private Map<String, Boolean> isErrorLoggable = new IdentityHashMap<String, Boolean>();
private Map<String, Boolean> isWarnLoggable = new IdentityHashMap<String, Boolean>();
private Map<String, Boolean> isInfoLoggable = new IdentityHashMap<String, Boolean>();
private Map<String, Boolean> isDebugLoggable = new IdentityHashMap<String, Boolean>();
private Map<String, Boolean> isVerboseLoggable = new IdentityHashMap<String, Boolean>();
/**
* Empty the caches of log levels.
*/
public void refreshLogLevels() {
isErrorLoggable = new IdentityHashMap<String, Boolean>();
isWarnLoggable = new IdentityHashMap<String, Boolean>();
isInfoLoggable = new IdentityHashMap<String, Boolean>();
isDebugLoggable = new IdentityHashMap<String, Boolean>();
isVerboseLoggable = new IdentityHashMap<String, Boolean>();
}
private boolean shouldLogError(String logTag) {
Boolean out = isErrorLoggable.get(logTag);
if (out != null) {
return out;
}
out = Log.isLoggable(logTag, Log.ERROR);
isErrorLoggable.put(logTag, out);
return out;
}
private boolean shouldLogWarn(String logTag) {
Boolean out = isWarnLoggable.get(logTag);
if (out != null) {
return out;
}
out = Log.isLoggable(logTag, Log.WARN);
isWarnLoggable.put(logTag, out);
return out;
}
private boolean shouldLogInfo(String logTag) {
Boolean out = isInfoLoggable.get(logTag);
if (out != null) {
return out;
}
out = Log.isLoggable(logTag, Log.INFO);
isInfoLoggable.put(logTag, out);
return out;
}
private boolean shouldLogDebug(String logTag) {
Boolean out = isDebugLoggable.get(logTag);
if (out != null) {
return out;
}
out = Log.isLoggable(logTag, Log.DEBUG);
isDebugLoggable.put(logTag, out);
return out;
}
@Override
public boolean shouldLogVerbose(String logTag) {
Boolean out = isVerboseLoggable.get(logTag);
if (out != null) {
return out;
}
out = Log.isLoggable(logTag, Log.VERBOSE);
isVerboseLoggable.put(logTag, out);
return out;
}
@Override
public void error(String tag, String message, Throwable error) {
if (shouldLogError(tag)) {
inner.error(tag, message, error);
}
}
@Override
public void warn(String tag, String message, Throwable error) {
if (shouldLogWarn(tag)) {
inner.warn(tag, message, error);
}
}
@Override
public void info(String tag, String message, Throwable error) {
if (shouldLogInfo(tag)) {
inner.info(tag, message, error);
}
}
@Override
public void debug(String tag, String message, Throwable error) {
if (shouldLogDebug(tag)) {
inner.debug(tag, message, error);
}
}
@Override
public void trace(String tag, String message, Throwable error) {
if (shouldLogVerbose(tag)) {
inner.trace(tag, message, error);
}
}
@Override
public void close() {
inner.close();
}
}
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