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-rw-r--r--tripleo_heat_merge/merge.py23
1 files changed, 15 insertions, 8 deletions
diff --git a/tripleo_heat_merge/merge.py b/tripleo_heat_merge/merge.py
index 077bcb1c..49aee6f2 100644
--- a/tripleo_heat_merge/merge.py
+++ b/tripleo_heat_merge/merge.py
@@ -80,6 +80,8 @@ def apply_scaling(template, scaling, in_copies=None):
in_copies is reset to None when a dict {'Merge::Map': someobject} is
encountered.
+
+ :param scaling: A dict of prefix -> (count, blacklists).
"""
in_copies = dict(in_copies or {})
# Shouldn't be needed but to avoid unexpected side effects/bugs we short
@@ -125,7 +127,7 @@ def scale_value(value, scaling, in_copies):
"""Scale out a value.
:param value: The value to scale (not a container).
- :param scaling: The scaling map to use.
+ :param scaling: The scaling map (prefix-> (copies, blacklist) to use.
:param in_copies: What containers we're currently copying.
:return: An iterator of the new values for the value as tuples:
(prefix, copy_num, value). E.g. Compute0, 1, Compute1Foo
@@ -134,7 +136,7 @@ def scale_value(value, scaling, in_copies):
- and that prefix is not in in_copies
"""
if isinstance(value, (str, unicode)):
- for prefix, copies in scaling.items():
+ for prefix, (copies, blacklist) in scaling.items():
if not value.startswith(prefix):
continue
suffix = value[len(prefix):]
@@ -144,7 +146,8 @@ def scale_value(value, scaling, in_copies):
return
else:
for n in range(copies):
- yield prefix, n, prefix[:-1] + str(n) + suffix
+ if n not in blacklist:
+ yield prefix, n, prefix[:-1] + str(n) + suffix
return
yield None, None, value
else:
@@ -156,9 +159,11 @@ def parse_scaling(scaling_args):
scaling_args = scaling_args or []
result = {}
for item in scaling_args:
- key, value = item.split('=')
- value = int(value)
- result[key + '0'] = value
+ key, values = item.split('=')
+ values = values.split(',')
+ value = int(values[0])
+ blacklist = frozenset(int(v) for v in values[1:] if v)
+ result[key + '0'] = value, blacklist
return result
@@ -251,10 +256,12 @@ def main(argv=None):
help='File to write output to. - for stdout',
default='-')
parser.add_argument('--scale', action="append",
- help="Names to scale out. Pass Prefix=1 to cause a key Prefix0Foo to "
+ help="Names to scale out. Pass Prefix=2 to cause a key Prefix0Foo to "
"be copied to Prefix1Foo in the output, and value Prefix0Bar to be"
"renamed to Prefix1Bar inside that copy, or copied to Prefix1Bar "
- "outside of any copy.")
+ "outside of any copy. Pass Prefix=3,1 to cause Prefix1* to be elided"
+ "when scaling Prefix out. Prefix=4,1,2 will likewise elide Prefix1 and"
+ "Prefix2.")
parser.add_argument(
'--change-image-params', action='store_true', default=False,
help="Change parameters in templates to match resource names. This was "