Page History

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This log file will grow over time to a considerable size.

In this exercise, we will create a task, whose job is to periodically back up and clear this log file.

This will be done with cron attribute introduced in the previous page. A cron will run indefinitely. i.e. once it has completed it will automatically re-queue itself.

For more examples of adding a cron see the user manual and ecFlow Python Api

Ecf Script

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%include <head.h>

# copy the log file to the ECF_HOME/log directory
cp %ECF_LOG% %ECF_HOME%/log/.
 
# clear the log file
ecflow_client  --log=clear

%include <tail.h>

 Text

For brevity, the previous families have been omitted.

# 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 house_keeping
     task clear_log
       cron -w 0 22:30  # run every Sunday at 10:30pm
 endfamily
endsuite

Python

For brevity, the previous families have been omitted.

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What to do

1. Make the changes to the suite definition file
2. Create all the necessary ecf script‘s 
3. Replace the suite
   python:  python3 test.py; python3 client.py
   text:       ecflow_client --suspend=/test  ;  ecflow_client --replace=/test  test.def
4. ecflow_ui  has a special window to explain why a task is queued. Select a queued task and press the Image Removed icon
        or  click on the 'Why tab'
5. Manually run the task. Examine the log file on disk.