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Sometimes a task should not be run when a certain condition is met.The condition can be signalled by an event. For example, event t2:b
might indicate that task t2 did not manage to produce the expected result, so
we do not need to run task t4.
This has a similar syntax to the trigger keyword but sets a task complete expression evaluation takes precedence over the trigger.
Completes can be between tasks, between families, or both.
It can be used in conjunction with a trigger. For example:
Text
| Code Block |
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# Definition of the suite test.
suite test
edit ECF_INCLUDE "$HOME/course" # replace '$HOME' with the path to your home directory
edit ECF_HOME "$HOME/course"
family f1
edit SLEEP 20
task t1
task t2
trigger t1 eq complete # task t2 will only start when task t1 is complete
event a # task t2 will set an event a
event b # task t2 will set an event b
task t3
trigger t2:a # task t3 will start when event a is set in task t2
task t4
trigger t2 eq complete # task t4 will start when task t2 is complete
complete t2:b # task t4 will complete if event b is set in task t2
endfamily
endsuite |
Python
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| language | py |
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| title | $HOME/course/test.py |
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import os
from ecflow import Defs,Suite,Family,Task,Edit,Trigger,Complete,Event
def create_family_f1():
return Family("f1", |
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Trigger("t2 == complete"),
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Complete("t2:b")))
print("Creating suite definition")
home = os.path.join(os.getenv("HOME"), "course")
defs = Defs(
Suite("test",
Edit(ECF_INCLUDE=home,ECF_HOME=home),
create_family_f1()))
print(defs)
print("Checking job creation: .ecf - |
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print(defs.check_job_creation())
print("Saving definition to file |
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'test.def'")
defs.save_as_defs("test.def") |
What to do
- Update test.def or test.py to add a complete expression to task t4
- Replace the suite
python: python3 test.py; python3 client.py
text: ecflow_client --suspend=/test ; ecflow_client --replace=/test test.def - Observe the tasks in ecflow_ui
- See the triggers by selecting t4
- See the trigger relation by clicking on the arrow
- See the triggers in the tree, using the Show menu
- Note the icon indicating that the task has not run
- To check the triggers modify task t2 so that event b is not triggered; task t4 should run when t2 completes.
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'"</span>
<span class="n">defs</span><span class="o">.</span><span class="n">save_as_defs</span><span class="p">(</span><span class="s">"test.def"</span><span class="p">)</span>
</pre></div>
</div>
<p><strong>What to do:</strong></p>
<ol class="arabic simple">
<li>Edit the <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-suite-definition"><em class="xref std std-term">suite definition</em></a> file or python to add a complete to task <strong>t4</strong></li>
<li>Load the definition again</li>
<li>Observe the tasks in <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-ecflowview"><em class="xref std std-term">ecflowview</em></a></li>
<li>See the triggers by selecting <strong>t4</strong> and clicking on the <img alt="triggers" src="/wiki/download/attachments/7373012/triggers.jpg" /> icon</li>
<li>See the trigger relation by clicking on the arrow</li>
<li>See the triggers in the tree, using the Show menu</li>
<li>Note the icon indicating that the task has not run</li>
<li>You can modify task <strong>t2</strong> to check that task <strong>t4</strong> will run when the event is not set</li>
</ol>
</div>
</div>
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