org.apache.zookeeper.server.RateLogger Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.zookeeper.server;
import org.apache.zookeeper.common.Time;
import org.slf4j.Logger;
public class RateLogger {
public RateLogger(Logger log) {
LOG = log;
}
private final Logger LOG;
private String msg = null;
private long timestamp;
private int count = 0;
public void flush() {
if (msg != null) {
if (count > 1) {
LOG.warn("[" + count + " times] " + msg);
} else if (count == 1) {
LOG.warn(msg);
}
}
msg = null;
count = 0;
}
public void rateLimitLog(String newMsg) {
long now = Time.currentElapsedTime();
if (newMsg.equals(msg)) {
++count;
if (now - timestamp >= 100) {
flush();
msg = newMsg;
timestamp = now;
}
} else {
flush();
msg = newMsg;
timestamp = now;
LOG.warn(msg);
}
}
}