Ori.livneh has uploaded a new change for review.
https://gerrit.wikimedia.org/r/149775
Change subject: wmflib: add ordered_yaml()
......................................................................
wmflib: add ordered_yaml()
Like ordered_json(), ordered_yaml() serializes a hash into YAML with
lexicographically sorted keys.
Ruby 1.9+ hashes maintain insertion order. The serialized form of hash is
therefore stable across Puppet runs, *but* only insofar as the insertion
order is stable. This function ensures hash keys are emitted in
lexicographical order.
Change-Id: I62605c2a23b3607dd8616c25d823ee341fb327c7
---
A modules/wmflib/lib/puppet/parser/functions/ordered_yaml.rb
1 file changed, 36 insertions(+), 0 deletions(-)
git pull ssh://gerrit.wikimedia.org:29418/operations/puppet
refs/changes/75/149775/1
diff --git a/modules/wmflib/lib/puppet/parser/functions/ordered_yaml.rb
b/modules/wmflib/lib/puppet/parser/functions/ordered_yaml.rb
new file mode 100644
index 0000000..3c7ed20
--- /dev/null
+++ b/modules/wmflib/lib/puppet/parser/functions/ordered_yaml.rb
@@ -0,0 +1,36 @@
+# == Function: ordered_yaml
+#
+# Serialize a hash into YAML with lexicographically sorted keys.
+#
+# Ruby 1.9+ hashes maintain insertion order. The serialized form
+# of hash is therefore stable across Puppet runs only insofar as
+# the insertion order is stable. This function ensures hash keys
+# are emitted in lexicographical order.
+#
+require 'yaml'
+
+class Hash
+ alias_method :to_yaml_orig, :to_yaml
+ def to_yaml(options = {})
+ Hash[sort].to_yaml_orig(options)
+ end
+end
+
+module Puppet::Parser::Functions
+ newfunction(
+ :ordered_yaml,
+ :type => :rvalue,
+ :doc => <<-END
+ Serialize a hash into YAML with lexicographically sorted keys.
+
+ Ruby 1.9+ hashes maintain insertion order. The serialized form
+ of hash is therefore stable across Puppet runs only insofar as
+ the insertion order is stable. This function ensures hash keys
+ are emitted in lexicographical order.
+ END
+ ) do |args|
+ newfunction(:ordered_yaml, :type => :rvalue) do |args|
+ fail 'ordered_yaml() requires a single argument' unless args.length ==
1
+ args.first.to_yaml
+ end
+end
--
To view, visit https://gerrit.wikimedia.org/r/149775
To unsubscribe, visit https://gerrit.wikimedia.org/r/settings
Gerrit-MessageType: newchange
Gerrit-Change-Id: I62605c2a23b3607dd8616c25d823ee341fb327c7
Gerrit-PatchSet: 1
Gerrit-Project: operations/puppet
Gerrit-Branch: production
Gerrit-Owner: Ori.livneh <o...@wikimedia.org>
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