It is sometimes useful to repeat the same task or family several times,
looping on a specific value. You can do that by defining a repeat attribute.
You can iterate over sequences of:
A sequence of integers or dates is created by specifying the
first and last element, with an optional increment (the default is one).
An ecFlow variable, whose name corresponds to the name of the repeat,
will be generated. This can be used in scripts or trigger expressions.

Ecf Script

We will add a new task /test/f4/f5/t1.
Create new ecf script file $HOME/course/test/f4/f5/t1.ecf to use these variables.

 

%include <head.h>
ecflow_client --label=info "My name is %NAME%" "My value is %VALUE%" "My date is %DATE%"
sleep %SLEEP%
%include <tail.h>

 

Text

Let us modify the suite definition file again

# Definition of the suite test.
suite test
 edit ECF_INCLUDE "$HOME/course"
 edit ECF_HOME    "$HOME/course"

 family f4
     edit SLEEP 2
     repeat string NAME a b c d e f
     family f5
         repeat integer VALUE 1 10
         task t1
             repeat date DATE 19991230 20000105
             label info ""
     endfamily
 endfamily
endsuite

 

 

Python

#!/usr/bin/env python2.7
import os
import ecflow  
    
def create_family_f4():
    f4 = ecflow.Family("f4")
    f4.add_variable("SLEEP", 2)
    f4.add_repeat( ecflow.RepeatString("NAME", ["a", "b", "c", "d", "e", "f" ] ) )
   
    f5 = f4.add_family("f5")
    f5.add_repeat( ecflow.RepeatInteger("VALUE", 1, 10) )
   
    t1 = f5.add_task("t1")
    t1.add_repeat( ecflow.RepeatDate("DATE", 20101230, 20110105) )
    t1.add_label("info", "")
    return f4
    
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_f4() )
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")

What to do

  1. Type in the changes
  2. Replace the suite definition
  3. How many times will /test/f4/f5/t1 run?
  4. In ecflowview, try to modify the values of a repeat