Pass args in file from task_runner to run_isolated

client/run_isolated.py

Index: client/run_isolated.py
diff --git a/client/run_isolated.py b/client/run_isolated.py
index 7c3f063793c8f1356e4ceeb5697043fed212788a..1c18deca8f79159415960cf9a4d6c4c063e626c2 100755
--- a/client/run_isolated.py
+++ b/client/run_isolated.py
@@ -31,6 +31,7 @@ __version__ = '0.8.5'
 
 import base64
 import collections
+import json
 import logging
 import optparse
 import os
@@ -823,10 +824,24 @@ def main(args):
     print >> sys.stderr, ex.message
     return 1
 
+def get_args(args):
+  if len(args) == 2 and args[0] == '-f':

[M-A Ruel, 2016/10/24 16:26:52]

then create a temporary optparse with only the -f flag supported. Make sure to
not handle --help though.

+    # If the only args are "-f filename", load those
+    # instead.
+    argfile = args[1]
+    args = []
+    try:
+      f = open(argfile, 'r')
+      args = json.loads(f.read())
+      f.close()
+    except Exception as e:
+      print "Couldn't read arguments: %s"%e
+  return args
 
 if __name__ == '__main__':
   subprocess42.inhibit_os_error_reporting()
   # Ensure that we are always running with the correct encoding.
   fix_encoding.fix_encoding()
   file_path.enable_symlink()
-  sys.exit(main(sys.argv[1:]))
+
+  sys.exit(main(get_args(sys.argv[1:])))