org.nd4j.common.util.OneTimeLogger Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2015-2018 Skymind, Inc.
*
* This program and the accompanying materials are made available under the
* terms of the Apache License, Version 2.0 which is available at
* https://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.
*
* SPDX-License-Identifier: Apache-2.0
******************************************************************************/
package org.nd4j.common.util;
import lombok.extern.slf4j.Slf4j;
import org.slf4j.Logger;
import java.util.HashSet;
import java.util.Queue;
import java.util.concurrent.LinkedTransferQueue;
import java.util.concurrent.locks.ReentrantReadWriteLock;
/**
*
* @author [email protected]
*/
@Slf4j
public class OneTimeLogger {
protected static HashSet hashSet = new HashSet<>();
protected static final Queue buffer = new LinkedTransferQueue<>();
private static final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
protected static boolean isEligible(String message) {
try {
lock.readLock().lock();
if (hashSet.contains(message))
return false;
} finally {
lock.readLock().unlock();
}
try {
lock.writeLock().lock();
if (buffer.size() >= 100) {
String rem = buffer.remove();
hashSet.remove(rem);
}
buffer.add(message);
hashSet.add(message);
return true;
} finally {
lock.writeLock().unlock();
}
}
public static void info(Logger logger, String format, Object... arguments) {
if (!isEligible(format))
return;
logger.info(format, arguments);
}
public static void warn(Logger logger, String format, Object... arguments) {
if (!isEligible(format))
return;
logger.warn(format, arguments);
}
public static void error(Logger logger, String format, Object... arguments) {
if (!isEligible(format))
return;
logger.error(format, arguments);
}
public static void reset() {
buffer.clear();
}
}