Changeset b14b495

Timestamp:

May 17, 2010 2:01:26 AM (14 years ago)

Author:

Ted Faber <faber@…>

Branches:

axis_example, compt_changes, info-ops, master, version-3.01, version-3.02

Children:

ec9962b

Parents:

da5b93c

Message:

Permute the constraint order for different compositions. Also add argument to
seed the generator.

File:

• fedd/compose.py (modified) (5 diffs)

fedd/compose.py

@@ -4 +4 @@
 import re
 import os
+import random
 
 from optparse import OptionParser
@@ -148 +149 @@
                 got_all = False
     return got_all
+
+def randomize_constraint_order(indexes):
+    """
+    Randomly reorder the lists of constraints that provides and accepts hold.
+    """
+    if not isinstance(indexes, tuple):
+        indexes = (indexes,)
+
+    for idx in indexes:
+        for k in idx.keys():
+            random.shuffle(idx[k])
 
 def remote_ns2topdl(uri, desc, cert):
@@ -229 +241 @@
 parser.add_option('--certfile', dest='cert', default=None,
         help='Certificate to use as identity')
+parser.add_option('--seed', dest='seed', type='int', default=None,
+        help='Random number seed')
 
 opts, args = parser.parse_args()
@@ -239 +253 @@
 else:
     cert = None
+
+random.seed(opts.seed)
 
 comps = [ ]
@@ -276 +292 @@
     constraints = [ c for c in constraints if isinstance(c.name, tuple )]
 
+# Mix up the constraint indexes 
+randomize_constraint_order((provides, accepts))
+
 # Now the various components live in the same namespace and are marked with
 # their composition requirements.