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In the previous exercise we saw that the two tasks were running simultaneously.
We would like now to make sure that t2 only runs once t1 is complete.
For this we have to define a trigger
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Text
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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
endfamily
endsuite |
Python
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#!/usr/bin/env python2.7
import os
from ecflow import Defs,Suite,Family,Task,Edit
def create_family_f1():
return Family("f1",
Edit(SLEEP=20),
Task("t1"),
Task("t2",Trigger("t1 == complete")))
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 -> .job0")
#print(defs.check_job_creation())
print("Saving definition to file 'test.def'")
defs.save_as_defs("test.def") |
#!/usr/bin/env python2.7
import os
import ecflow
def create_family_f1():
f1 = ecflow.Family("f1" )
f1.add_variable("SLEEP", 20)
f1.add_task("t1")
f1.add_task("t2").add_trigger("t1 == complete")
return f1
print "Creating suite definition"
defs = ecflow.Defs()
suite = defs.add_suite("test")
suite.add_variable("ECF_INCLUDE", os.path.join(os.getenv("HOME"), "course"))
suite.add_variable("ECF_HOME", os.path.join(os.getenv("HOME"), "course"))
suite.add_family( create_family_f1() )
print defs
print "Checking job creation: .ecf -> .job0"
print defs.check_job_creation()
print "Checking trigger expressions"
print defs.check()
print "Saving definition to file 'test.def'"
defs.save_as_defs("test.def")
What to do
- Edit the suite definition file to add the trigger.
- Replace the suite
python: python test.py ; python client.py
text: ecflow_client --suspend=/test ; ecflow_client --replace=/test test.def - Observe the tasks in ecflow_ui .
- See the triggers by selecting t1 or t2.
- See the trigger relation by clicking on the trigger tab.
- Search any reference to t1 by using the search menu.
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