net.sf.antcontrib.process
Class Limit

java.lang.Object

  org.apache.tools.ant.ProjectComponent

      org.apache.tools.ant.Task

          net.sf.antcontrib.process.Limit

All Implemented Interfaces:

org.apache.tools.ant.TaskContainer

public class Limit
extends org.apache.tools.ant.Task
implements org.apache.tools.ant.TaskContainer

Limits the amount of time that a task or set of tasks can run. This is useful for tasks that may "hang" or otherwise not complete in a timely fashion. This task is done when either the maxwait time has expired or all nested tasks are complete, whichever is first.

Developed for use with Antelope, migrated to ant-contrib Oct 2003.

Since:

Ant 1.5

Version:

$Revision: 1.6 $

Author:

Dale Anson, Robert D. Rice

Nested Class Summary

static class

Limit.TimeUnit The enumeration of units: millisecond, second, minute, hour, day, week Todo: we use timestamps in many places, why not factor this out

Field Summary

protected Limit.TimeUnit

unit

Fields inherited from class org.apache.tools.ant.Task

description, location, target, taskName, taskType, wrapper

Fields inherited from class org.apache.tools.ant.ProjectComponent

project

Constructor Summary

Limit()

Method Summary

void	addTask(org.apache.tools.ant.Task task) Add a task to wait on.
void	execute() Execute all nested tasks, but stopping execution of nested tasks after maxwait or when all tasks are done, whichever is first.
void	setDays(int value) Set a day wait value.
void	setFailonerror(boolean fail) Determines whether the build should fail if the time limit has expired on this task.
void	setHours(int value) Set an hours wait value.
void	setMaxwait(int wait) How long to wait for all nested tasks to complete, in units.
void	setMaxWaitUnit(Limit.TimeUnit unit) Set the max wait time unit, default is minutes.
void	setMilliseconds(int value) Set a millisecond wait value.
void	setMinutes(int value) Set a minute wait value.
void	setProperty(java.lang.String p) Name the property to set after a timeout.
void	setSeconds(int value) Set a second wait value.
void	setUnit(java.lang.String unit) Sets the unit for the max wait.
void	setValue(java.lang.String v) The value for the property to set after a timeout, defaults to true.
void	setWeeks(int value) Set a week wait value.

Methods inherited from class org.apache.tools.ant.Task

getDescription, getLocation, getOwningTarget, getRuntimeConfigurableWrapper, getTaskName, getTaskType, getWrapper, handleErrorFlush, handleErrorOutput, handleFlush, handleInput, handleOutput, init, isInvalid, log, log, maybeConfigure, perform, reconfigure, setDescription, setLocation, setOwningTarget, setRuntimeConfigurableWrapper, setTaskName, setTaskType

Methods inherited from class org.apache.tools.ant.ProjectComponent

getProject, setProject

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

unit

protected Limit.TimeUnit unit

Constructor Detail

Limit

public Limit()

Method Detail

addTask

public void addTask(org.apache.tools.ant.Task task)

             throws org.apache.tools.ant.BuildException

Add a task to wait on.

Specified by:

addTask in interface org.apache.tools.ant.TaskContainer

Parameters:

task - A task to execute

Throws:

org.apache.tools.ant.BuildException - won't happen

setMaxwait

public void setMaxwait(int wait)

How long to wait for all nested tasks to complete, in units. Default is to wait 3 minutes.

Parameters:

wait - time to wait, set to 0 to wait forever.

setUnit

public void setUnit(java.lang.String unit)

Sets the unit for the max wait. Default is minutes.

Parameters:

unit - valid values are "millisecond", "second", "minute", "hour", "day", and "week".

setMilliseconds

public void setMilliseconds(int value)

Set a millisecond wait value.

Parameters:

value - the number of milliseconds to wait.

setSeconds

public void setSeconds(int value)

Set a second wait value.

Parameters:

value - the number of seconds to wait.

setMinutes

public void setMinutes(int value)

Set a minute wait value.

Parameters:

value - the number of milliseconds to wait.

setHours

public void setHours(int value)

Set an hours wait value.

Parameters:

value - the number of hours to wait.

setDays

public void setDays(int value)

Set a day wait value.

Parameters:

value - the number of days to wait.

setWeeks

public void setWeeks(int value)

Set a week wait value.

Parameters:

value - the number of weeks to wait.

setMaxWaitUnit

public void setMaxWaitUnit(Limit.TimeUnit unit)

Set the max wait time unit, default is minutes.

setFailonerror

public void setFailonerror(boolean fail)

Determines whether the build should fail if the time limit has expired on this task. Default is no.

Parameters:

fail - if true, fail the build if the time limit has been reached.

setProperty

public void setProperty(java.lang.String p)

Name the property to set after a timeout.

Parameters:

p - of property to set if the time limit has been reached.

setValue

public void setValue(java.lang.String v)

The value for the property to set after a timeout, defaults to true.

Parameters:

v - for the property to set if the time limit has been reached.

execute

public void execute()

             throws org.apache.tools.ant.BuildException

Execute all nested tasks, but stopping execution of nested tasks after maxwait or when all tasks are done, whichever is first.

Overrides:

execute in class org.apache.tools.ant.Task

Throws:

org.apache.tools.ant.BuildException - Description of the Exception