#48 Merge branch 'main' of github.com:NOAA-GFDL/fre-workflows into 48.wf-script-edits

Author: Dana Singh

Jinja2Filters/get_components.py

@@ -0,0 +1,29 @@
+import re
+import os
+from pathlib import Path
+import yaml
+
+# set up logging
+import logging
+logging.basicConfig(level=logging.INFO)
+fre_logger = logging.getLogger(__name__)
+
+def get_components(yamlfile):
+    """Retrieve active pp components from the yaml
+
+    Arguments:
+        yamlfile (str): Filepath to the yaml
+"""
+    fre_logger.debug(f"Yaml file: {yamlfile}")
+    components = []
+
+    with open(yamlfile) as file_:
+        yaml_ = yaml.safe_load(file_)
+
+        for component in yaml_["postprocess"]["components"]:
+            if component['switch'] is True:
+                components.append(component["type"])
+
+    # we want to return a list, but some other scripts are expecting a space-separated string
+    #return(components)
+    return(" ".join(components))

flow.cylc

@@ -46,6 +46,9 @@
 {# The combined yaml is the definitive configuration source #}
 {% set YAML = EXPERIMENT + '.yaml' %}
 
+{# Retrieve active pp components from the yaml #}
+{% set PP_COMPONENTS = YAML | get_components %}
+
 [meta]
     title = "Postprocessing Example 1"
     description = """