X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/af17604c5a93830380fb50db93ce543926c116cf..524c20020594ba67a2a822eccb632f8a5f5dc3ce:/sdk/cwl/arvados_cwl/fsaccess.py

diff --git a/sdk/cwl/arvados_cwl/fsaccess.py b/sdk/cwl/arvados_cwl/fsaccess.py
index 69f918ead9..15689a9010 100644
--- a/sdk/cwl/arvados_cwl/fsaccess.py
+++ b/sdk/cwl/arvados_cwl/fsaccess.py
@@ -22,6 +22,8 @@ import arvados.collection
 import arvados.arvfile
 import arvados.errors
 
+from googleapiclient.errors import HttpError
+
 from schema_salad.ref_resolver import DefaultFetcher
 
 logger = logging.getLogger('arvados.cwl-runner')
@@ -32,6 +34,7 @@ class CollectionCache(object):
                  min_entries=2):
         self.api_client = api_client
         self.keep_client = keep_client
+        self.num_retries = num_retries
         self.collections = OrderedDict()
         self.lock = threading.Lock()
         self.total = 0
@@ -54,7 +57,8 @@ class CollectionCache(object):
             if pdh not in self.collections:
                 logger.debug("Creating collection reader for %s", pdh)
                 cr = arvados.collection.CollectionReader(pdh, api_client=self.api_client,
-                                                         keep_client=self.keep_client)
+                                                         keep_client=self.keep_client,
+                                                         num_retries=self.num_retries)
                 sz = len(cr.manifest_text()) * 128
                 self.collections[pdh] = (cr, sz)
                 self.total += sz
@@ -120,7 +124,13 @@ class CollectionFsAccess(cwltool.stdfsaccess.StdFsAccess):
             return super(CollectionFsAccess, self).open(self._abs(fn), mode)
 
     def exists(self, fn):
-        collection, rest = self.get_collection(fn)
+        try:
+            collection, rest = self.get_collection(fn)
+        except HttpError as err:
+            if err.resp.status == 404:
+                return False
+            else:
+                raise
         if collection is not None:
             if rest:
                 return collection.exists(rest)