Shell Script Exports

The configuration for a GPC container node includes an export field that is supported only for Python scripts.

If you want to execute shell scripts within a container node, you must use the following method to export values for use in tests.

Step 1: shell script commands

First, add echo commands in the shell script that will write value outputs to files in the node's docker-share directory.

echo -n  "exportvalue_1" > "docker-share/file-out.csv"
echo -n  "exportvalue_2" > "docker-share/script_output.txt"

Step 2: variable assignment

To reference the output values in tests, the values need to be associated with variables. Assign variables to the output files in the recipe's notebook.json.

"assign-variables": [
        {
            "name": "output_as_a_file",
            "file": "file-out.csv"
        }
,
        {
            "name": "output_as_a_file_script",
            "file": "script_output.txt"
        }
    ],

Step 3: tests configuration

The variables assigned in notebook.json can then be referenced in node tests.

{
    "image-repo": "{{dockerhubConfig.image_repo.general_purpose}}",
    "image-tag": "{{dockerhubConfig.image_tag.general_purpose}}",
    "dockerhub-namespace": "{{dockerhubConfig.namespace.general_purpose}}",
    "dockerhub-username": "{{dockerhubConfig.username}}",
    "dockerhub-password": "{{dockerhubConfig.password}}",
    "tests": {
        "test-output-as-a-file-from-script": {
            "test-variable": "output_as_a_file_script",
            "action": "stop-on-error",
            "type": "test-contents-as-string",
            "test-logic": "output_as_a_file_script == 'cbergh'",
            "keep-history": true,
            "description": ""
        }
    }
}