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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.tools.ant.taskdefs;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.Task;
/**
* Sleep, or pause, for a period of time.
*
* <p>A task for sleeping a short period of time, useful when a
* build or deployment process requires an interval between tasks.</p>
*
* <p>A negative value can be supplied to any of attributes provided the total sleep time
* is positive, pending fundamental changes in physics and JVM
* execution times</p>
*
* <p>Note that sleep times are always hints to be interpreted by the OS how it feels
* small times may either be ignored or rounded up to a minimum timeslice. Note
* also that the system clocks often have a fairly low granularity too, which complicates
* measuring how long a sleep actually took.</p>
*
* @since Ant 1.4
* @ant.task category="utility"
*/
public class Sleep extends Task {
/**
* failure flag
*/
private boolean failOnError = true;
/**
* sleep seconds
*/
private int seconds = 0;
/**
* sleep hours
*/
private int hours = 0;
/**
* sleep minutes
*/
private int minutes = 0;
/**
* sleep milliseconds
*/
private int milliseconds = 0;
/**
* Creates new instance
*/
public Sleep() {
}
/**
* seconds to add to the sleep time
*
* @param seconds The new Seconds value
*/
public void setSeconds(int seconds) {
this.seconds = seconds;
}
/**
* hours to add to the sleep time.
*
* @param hours The new Hours value
*/
public void setHours(int hours) {
this.hours = hours;
}
/**
* minutes to add to the sleep time
*
* @param minutes The new Minutes value
*/
public void setMinutes(int minutes) {
this.minutes = minutes;
}
/**
* milliseconds to add to the sleep time
*
* @param milliseconds The new Milliseconds value
*/
public void setMilliseconds(int milliseconds) {
this.milliseconds = milliseconds;
}
/**
* sleep for a period of time
*
* @param millis time to sleep
*/
public void doSleep(long millis) {
try {
Thread.sleep(millis);
} catch (InterruptedException ie) {
// Ignore Exception
}
}
/**
* flag controlling whether to break the build on an error.
*
* @param failOnError The new FailOnError value
*/
public void setFailOnError(boolean failOnError) {
this.failOnError = failOnError;
}
/**
* return time to sleep
*
* @return sleep time. if below 0 then there is an error
*/
private long getSleepTime() {
// CheckStyle:MagicNumber OFF
return ((((long) hours * 60) + minutes) * 60 + seconds) * 1000
+ milliseconds;
// CheckStyle:MagicNumber ON
}
/**
* verify parameters
*
* @throws BuildException if something is invalid
*/
public void validate()
throws BuildException {
if (getSleepTime() < 0) {
throw new BuildException("Negative sleep periods are not "
+ "supported");
}
}
/**
* Executes this build task. Throws org.apache.tools.ant.BuildException
* if there is an error during task execution.
*
* @exception BuildException Description of Exception
*/
@Override
public void execute()
throws BuildException {
try {
validate();
long sleepTime = getSleepTime();
log("sleeping for " + sleepTime + " milliseconds",
Project.MSG_VERBOSE);
doSleep(sleepTime);
} catch (Exception e) {
if (failOnError) {
throw new BuildException(e);
} else {
String text = e.toString();
log(text, Project.MSG_ERR);
}
}
}
}
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