org.apache.hadoop.hbase.client.RetryingTimeTracker Maven / Gradle / Ivy
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* 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.hadoop.hbase.client;
import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
/**
* Tracks the amount of time remaining for an operation.
*/
class RetryingTimeTracker {
private long globalStartTime = -1;
public RetryingTimeTracker start() {
if (this.globalStartTime < 0) {
this.globalStartTime = EnvironmentEdgeManager.currentTime();
}
return this;
}
public int getRemainingTime(int callTimeout) {
if (callTimeout <= 0) {
return 0;
} else {
if (callTimeout == Integer.MAX_VALUE) {
return Integer.MAX_VALUE;
}
long remaining = EnvironmentEdgeManager.currentTime() - this.globalStartTime;
long remainingTime = callTimeout - remaining;
if (remainingTime < 1) {
// If there is no time left, we're trying anyway. It's too late.
// 0 means no timeout, and it's not the intent here. So we secure both cases by
// resetting to the minimum.
remainingTime = 1;
}
if (remainingTime > Integer.MAX_VALUE) {
throw new RuntimeException(
"remainingTime=" + remainingTime + " which is > Integer.MAX_VALUE");
}
return (int) remainingTime;
}
}
public long getStartTime() {
return this.globalStartTime;
}
}