13931: Support for getting file sizes of files in Keep

Arvados-DCO-1.1-Signed-off-by: Peter Amstutz <pamstutz@veritasgenetics.com>

diff --git a/sdk/cwl/arvados_cwl/fsaccess.py b/sdk/cwl/arvados_cwl/fsaccess.py
index 15689a9010934cf2b8847ec08825cf30bd3e13eb..9a893df781f477dadac19264fb49cfa77b459bb7 100644 (file)
--- a/sdk/cwl/arvados_cwl/fsaccess.py
+++ b/sdk/cwl/arvados_cwl/fsaccess.py
@@ -139,6 +139,17 @@ class CollectionFsAccess(cwltool.stdfsaccess.StdFsAccess):
         else:
             return super(CollectionFsAccess, self).exists(fn)
 
+    def size(self, fn):  # type: (unicode) -> bool
+        collection, rest = self.get_collection(fn)
+        if collection is not None:
+            if rest:
+                arvfile = collection.find(rest)
+                if isinstance(arvfile, arvados.arvfile.ArvadosFile):
+                    return arvfile.size()
+            raise IOError(errno.EINVAL, "Not a path to a file %s" % (fn))
+        else:
+            return super(CollectionFsAccess, self).size(fn)
+
     def isfile(self, fn):  # type: (unicode) -> bool
         collection, rest = self.get_collection(fn)
         if collection is not None: