Workflow variable contents are not preserved in docker-composed tasks

[mbenguig]

In a docker-compose task

• I set a variable product_list with liste.txt as value
• I set a variable product_list_ajusted with liste_ajustee.txt as value

I create a docker-compose task calling these variables

Now $product_list => liste.txt and $product_list_ajusted => liste.txt_ajusted

[tobwiens]

@mbenguig
Can you show the docker-compose task?

The variables should be access through $variables_product_list -> .... Because the variables are pushed to the bash which execute docker-compose. Docker compose has it's own way to process bash variables.

Furhtermore, ProActive docker-compose script engine replaces variables inside the docker-compose script. There is a blog post about it: http://blog.activeeon.com/2015/04/proactive-and-docker-schedule-and.html

[tobwiens]

Consider this xml file with variable substitution

<?xml version="1.0" encoding="UTF-8"?>
<job
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns="urn:proactive:jobdescriptor:3.8"
     xsi:schemaLocation="urn:proactive:jobdescriptor:3.8 http://www.activeeon.com/public_content/schemas/proactive/jobdescriptor/3.8/schedulerjob.xsd"
    name="Untitled workflow" 
    priority="normal"
    onTaskError="continueJobExecution"
     maxNumberOfExecution="2"
>
  <variables>
    <variable name="output_variable" value="-------------VARIABLES WORK!---------------" />
  </variables>
  <description>
    <![CDATA[ A workflow which runs a docker compose script ]]>
  </description>
  <taskFlow>
    <task name="Docker-Compose-Task">
      <description>
        <![CDATA[ Simple hello world with docker-compose script engine. ]]>
      </description>
      <scriptExecutable>
        <script>
          <code language="docker-compose">
            <![CDATA[
ubuntuEcho:
  image: ubuntu
  command: /bin/bash -c 'sleep 5 && echo "$output_variable" '
]]>
          </code>
        </script>
      </scriptExecutable>
    </task>
  </taskFlow>
</job>

[mbenguig]

Moved to ow2-proactive/scriptengine-docker-compose#24