X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/57647945b08a74bab02fed6adf947eb9adb8321f..eae1286badb67ee63888633ff59bda9cb736131e:/sdk/cwl/arvados_cwl/arvdocker.py

diff --git a/sdk/cwl/arvados_cwl/arvdocker.py b/sdk/cwl/arvados_cwl/arvdocker.py
index 6b736a5a7d..e59903f2dc 100644
--- a/sdk/cwl/arvados_cwl/arvdocker.py
+++ b/sdk/cwl/arvados_cwl/arvdocker.py
@@ -33,7 +33,7 @@ def arv_docker_get_image(api_client, dockerRequirement, pull_image, project_uuid
         if dockerRequirement["dockerImageId"] in cached_lookups:
             return dockerRequirement["dockerImageId"]
 
-    with SourceLine(dockerRequirement, "dockerImageId", WorkflowException):
+    with SourceLine(dockerRequirement, "dockerImageId", WorkflowException, logger.isEnabledFor(logging.DEBUG)):
         sp = dockerRequirement["dockerImageId"].split(":")
         image_name = sp[0]
         image_tag = sp[1] if len(sp) > 1 else "latest"
@@ -44,7 +44,10 @@ def arv_docker_get_image(api_client, dockerRequirement, pull_image, project_uuid
 
         if not images:
             # Fetch Docker image if necessary.
-            cwltool.docker.get_image(dockerRequirement, pull_image)
+            try:
+                cwltool.docker.get_image(dockerRequirement, pull_image)
+            except OSError as e:
+                raise WorkflowException("While trying to get Docker image '%s', failed to execute 'docker': %s" % (dockerRequirement["dockerImageId"], e))
 
             # Upload image to Arvados
             args = []