Is there a way to define a task in Ant that always gets executed at the end of every run? This SO question provides a way to do so, at the start of every run, before any other targets have been executed but I am looking at the opposite case.
My use case is to echo a message warning the user if a certain condition was discovered during the run but I want to make sure it's echoed at the very end so it gets noticed.
use a buildlistener, f.e. the exec-listener which provides a taskcontainer for each build result
( BUILD SUCCESSFUL | BUILD FAILED ) where you can put all your needed tasks in, see :
https://stackoverflow.com/a/6391165/130683
for details.
It's an interesting situation. Normally, I would say you can't do this in an automated way. You could wrap Ant in some shell script to do this, but Ant itself really isn't a full fledge programming language.
The only thing I can think of is to add an <ant> call at the end of each task to echo out what you want. You could set it up, that if a variable isn't present, the echo won't happen. Of course, this means calling the same target a dozen or so times just to get that final <echo>.
I checked through AntXtras and Ant-Contrib for possible methods, but couldn't find any.
Sorry.
Wrap your calls in the sequential container.
http://ant.apache.org/manual/Tasks/sequential.html
Related
TFS build allows to specify conditions for running a task: reference.
The condition I would like to define is: a specific task [addressed by name or other mean] has failed.
This is similar to Only when a previous task has failed, but I want to specify which previous task that is.
Looking at the examples I don't see any condition that is addressing a specific task outcome, only the entire build status.
Is it possible? any workaround to achieve this?
It doesn't seem like there's an out-of-the-box solution for this requirement, but I can come up with (an ugly :)) workaround.
Suppose your specific task (the one you examine in regards to its status) is called A. The goal is to call another build task (let's say B) only in case A fails.
You can do the following:
Define a custom build variable, call it task.A.status and set to success
Create another build task, e.g. C and schedule it right after A; condition it to only run if A fails - there's a standard condition for that
The task C should only do one thing - set task.A.status build variable to 'failure' (like this, if we are talking PowerShell: Write-Host "##vso[task.setvariable variable=task.A.status]failure")
Finally, the task B is scheduled sometime after C and is conditioned to run in case task.A.status equals failure, like this: eq(variables['task.A.status'], 'failure')
I might be incorrect in syntax details, but you should get the general idea. Hope it helps.
I'm writing a simple applescript script for iTerm2 that generates a bunch of tabs and starts running services within them (I have a lot of microservices, and all need to be running to test things locally).
Things are mostly working, however I'm experiencing some slightly odd behavior which I think is related to applescript sending commands early. Let's look at a concrete example:
create tab with default profile
tell the current session
write text "cd services/myservice"
write text "make build-docker"
write text "make run-docker"
end tell
In theory, this chunk should
1) Create a new tab
2) Change into a new directory
3) Build a docker image and
4) Run that docker image.
This will occasionally work, but more frequently I run into problems on step 4. Specifically, I'll check the tab only to find out that 'make build-docker' was the last command run. This command takes some time, so I'm assuming "make run-docker" is sent while build is running and is ignored. Is there a way to force applescript/iTerm2 to wait for this command to finish so that run is executed correctly?
Hopefully this is clear. Thanks for reading!
If you have iTerm's shell integration enabled, you can poll is at shell prompt to determine if the command has finished:
tell application "iTerm2"
tell current window
create tab with profile "BentoBox"
tell current session
write text "sleep 5"
repeat while not (is at shell prompt)
delay 0.5
end repeat
write text "sleep 5"
end tell
end tell
end tell
Otherwise, you will want to string all the commands together in one tell:
write text "cd services/myservice; make build-docker; etc; etc; etc.."
Or place them in a shell script and execute that:
write text "my_super_duper_shell_script.sh"
Or use AppleScript to write the cmds to a tmp file and execute that:
re : How can I create or replace a file using Applescript?
Im trying to write a logic that depends on the success or failure of cccheckout command. Is there something similar to returnProperty attribute as in exec task?
Thanks,
Aarthi
Looking at the CCCheckout documentation, I would rather use the exception mechanism to process any failure.
failonerr
Throw an exception if the command fails. Default is true.
Since ant 1.6.1
In ant, that means you can separate your ant process in two (one if no failure, one one exception), using the ant trycatch task.
It's possible you're asking that question because of cleartool.exe behaves strangly
sometimes, means it returns RC -1 even if no real error occured.
Means using cccheckout with failonerr="true" would sometimes cause an unneccessary Build failed
as any RC != 0 is handled as error by exec task.
But you might use the <exec> task directly with executable cleartool.exe and set attribute
resultproperty to make the RC available as property
outputproperty to make stdout available as property
errorproperty to make stderr available as property
for further processing, i.e. use condition task to check those properties..
Some try/catch/finally feature provided by Ant addons like :
AntContrib
Flaka
might come in handy, as VonC already mentioned.
If it gets more complicated afterwards use Groovy ant task or script task.
In Jenkins there is a possibility to create free project which can contain a script execution. The build fails (becomes red) when the return level of the script is not 0.
Is there a possibility to make it "yellow"?
(Yellow usually indicates successful build with failed tests)
The system runs on Linux.
Give the Log Parser Plugin a try. That should do the trick for you.
One slightly hacky way do do it, is to alter the job to publish test results and supply fake results.
I've got a job that is publishing the test results from a file called "results.xml". The last step in my build script checks the return value of the build, copies eihter "results-good.xml" or "results-unstable.xml" to "results.xml" and then returns a zero.
Thus if the script fails on one of the early steps, the build is red. But if the build succeeds its green or yellow based on the return code it would have retunred without this hack.
I have an extension-point defined in ant :
<extension-point name="foo"/>
A lot of tasks contribute to this point in several imported ant files :
<bindtargets targets="bar" extensionPoint="foo" />
However I'm kinda lost as to exactly which tasks are contributing. Is there a way to have ant report the tasks that would be triggered by a given extension point ? More generaly, is there a way to display the "call-graph" (or simply the list of dependencies) of an ant task ?
I tried using verbose options for ant (-v and such), with no luck.
Thanks
First of all, you can try to debug the ANT process in your IDE using remote debugging by adding some parameters to ANT_OPTS (mine is set in ~/.profile):
http://blog.dahanne.net/2010/06/03/debugging-any-java-application/
And profiling may help. I found project Antro on ANT Wiki...
http://sourceforge.net/projects/antro
Maybe you can try it out. The project is said to be designed for ANT, which looks promising in solving your problem.
Also you can use Yourkit Java Profiler to do a CPU profiling. YJP can show the call graph of a java application, but I'm not sure if one can find out which are ANT targets.
The following document shows how to start a java application with YJP agent.
http://www.yourkit.com/docs/95/help/agent.jsp
I know of 2 ways to get this information:
You can get the effective target/extension-point invocation sequence from Ant's console logger. To do this, place Ant's logging facility into verbose mode by passing -verbose on the command line to Ant. There are two lines, one after the other, that dump to the console immediately before most targets as they are invoked in your build script:
A line that shows a summary of the targets in the call sequence starting with the text, Build sequence for target(s) 'artifact' is [...].
A line showing the detailed call sequence (nested targets and antcalls included). This line starts with the text, Complete build sequence is [...]. This listing considers, as much as reasonably possible, the evaluation of any if and unless attributes of each target listed at the point the line is logged to the console.
Simply invoke your Ant build as you would normally with the -verbose option and your console should have the information you're looking for.
You can get a pictorial representation of the call sequence using a tool called Grand. However, it hasn't been updated for quite some time and thus doesn't support extension-points (which is what you're concerned with here). It will interpret antcall's, ant, and depend'encies. It doesn't evaluate the if and unless attributes but simply identifies potential execution sequence - more of a dependency hierarchy than an actual call graph. The project is on Github so an update to support extension-points may not be too difficult.
The graphic is rendered using Graphviz.
For an actual call sequence, use option 1.
This is pretty sloppy, but it works. Ant is actually pretty easily scripted, and if you are using at least Java 6 (or it might be Java 7), javascript support is built in and thus can be used right out of the box. This defines a task that will echo the dependencies of any target in call order:
<scriptdef name="listdepends" language="javascript">
<attribute name="target"/>
<![CDATA[
var done = [];
var echo = project.createTask("echo")
function listdepend(t) {
done.push(t.getName());
var depends = t.getDependencies();
while (depends.hasMoreElements()) {
var t2 = depends.nextElement();
if (done.indexOf(t2)==-1) listdepend(project.getTargets().get(t2));
}
echo.setMessage(t.getName());
echo.perform();
}
var t = attributes.get("target");
if (t!=null) {
var targ = project.getTargets().get(t);
listdepend(targ);
}
]]>
</scriptdef>
In your case, you can create a new target (or not) and call it like so:
<target name="listfoo">
<listdepends target="foo"/>
</target>
As I said, this is somewhat sloppy. It probably isn't very fast (although unless your target triggers thousands of others, it probably isn't noticeably slow). It won't handle antcall tasks (although it could be modified to do so easily) or respond to if and unless attributes. If dependencies nest too far, it may hit a recursion depth limit (but I doubt any project nest them deep enough).
The array is used to make sure that each dependency is listed once (ant would only run them once).