| /** |
| * 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.fs.slive; |
| |
| import java.util.List; |
| import java.util.Random; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.slive.OperationOutput.OutputType; |
| |
| /** |
| * Operation which sleeps for a given number of milliseconds according to the |
| * config given, and reports on the sleep time overall |
| */ |
| class SleepOp extends Operation { |
| |
| private static final Log LOG = LogFactory.getLog(SleepOp.class); |
| |
| SleepOp(ConfigExtractor cfg, Random rnd) { |
| super(SleepOp.class.getSimpleName(), cfg, rnd); |
| } |
| |
| protected long getSleepTime(Range<Long> sleepTime) { |
| long sleepMs = Range.betweenPositive(getRandom(), sleepTime); |
| return sleepMs; |
| } |
| |
| /** |
| * Sleep for a random amount of time between a given positive range |
| * |
| * @param sleepTime |
| * positive long range for times to choose |
| * |
| * @return output data on operation |
| */ |
| List<OperationOutput> run(Range<Long> sleepTime) { |
| List<OperationOutput> out = super.run(null); |
| try { |
| if (sleepTime != null) { |
| long sleepMs = getSleepTime(sleepTime); |
| long startTime = Timer.now(); |
| sleep(sleepMs); |
| long elapsedTime = Timer.elapsed(startTime); |
| out.add(new OperationOutput(OutputType.LONG, getType(), |
| ReportWriter.OK_TIME_TAKEN, elapsedTime)); |
| out.add(new OperationOutput(OutputType.LONG, getType(), |
| ReportWriter.SUCCESSES, 1L)); |
| } |
| } catch (InterruptedException e) { |
| out.add(new OperationOutput(OutputType.LONG, getType(), |
| ReportWriter.FAILURES, 1L)); |
| LOG.warn("Error with sleeping", e); |
| } |
| return out; |
| } |
| |
| @Override // Operation |
| List<OperationOutput> run(FileSystem fs) { |
| Range<Long> sleepTime = getConfig().getSleepRange(); |
| return run(sleepTime); |
| } |
| |
| /** |
| * Sleeps the current thread for X milliseconds |
| * |
| * @param ms |
| * milliseconds to sleep for |
| * |
| * @throws InterruptedException |
| */ |
| private void sleep(long ms) throws InterruptedException { |
| if (ms <= 0) { |
| return; |
| } |
| Thread.sleep(ms); |
| } |
| } |