#!/usr/bin/env python
-# Crunch script integration for running arvados-cwl-runner (importing
-# arvados_cwl module) inside a crunch job.
-#
+# Crunch script integration for running arvados-cwl-runner inside a crunch job.
+
+import arvados_cwl
+import sys
+
+try:
+ # Use the crunch script defined in the arvados_cwl package. This helps
+ # prevent the crunch script from going out of sync with the rest of the
+ # arvados_cwl package.
+ import arvados_cwl.crunch_script
+ arvados_cwl.crunch_script.run()
+ sys.exit()
+except ImportError:
+ pass
+
+# When running against an older arvados-cwl-runner package without
+# arvados_cwl.crunch_script, fall back to the old code.
+
+
# This gets the job record, transforms the script parameters into a valid CWL
# input object, then executes the CWL runner to run the underlying workflow or
# tool. When the workflow completes, record the output object in an output
# collection for this runner job.
import arvados
-import arvados_cwl
import arvados.collection
import arvados.util
import cwltool.main