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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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Python
#!/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 eq complete")
return f1
print "Creating suite definition"
defs = ecflow.Defs()
suite = defs.add_suite("test")
suite.add_variable("ECF_INCLUDE", os.getenv("HOME") + "/course")
suite.add_variable("ECF_HOME", 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.
- Observe the tasks in ecflowview.
- See the triggers by selecting t1 or t2 and clicking on the
icon. - See the trigger relation by clicking on the arrow.
- See the triggers in the tree, using the Show drop down menu.
- Search any reference to t1 by using the
icon
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