1 files changed, 52 insertions, 0 deletions
diff --git a/chef/lib/chef/json.rb b/chef/lib/chef/json.rb
new file mode 100644
index 0000000000..24020356ba
--- /dev/null
+++ b/chef/lib/chef/json.rb
@@ -0,0 +1,52 @@
+#
+# Author:: Tim Hinderliter (<tim@opscode.com>)
+# Copyright:: Copyright (c) 2010 Opscode, Inc.
+# License:: Apache License, Version 2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Wrapper class for interacting with JSON.
+
+require 'json'
+
+class Chef
+  class JSON
+    JSON_MAX_NESTING = 1000
+
+    class <<self
+      # See CHEF-1292/PL-538. Increase the max nesting for JSON, which defaults
+      # to 19, and isn't enough for some (for example, a Node within a Node)
+      # structures.
+      def opts_add_max_nesting(opts)
+        if opts.nil? || !opts.has_key?(:max_nesting)
+          opts = opts.nil? ? Hash.new : opts.clone
+          opts[:max_nesting] = JSON_MAX_NESTING
+        end
+        opts
+      end
+
+      # Just call the JSON gem's parse method with a modified :max_nesting field
+      def from_json(source, opts = {})
+        ::JSON.parse(source, opts_add_max_nesting(opts))
+      end
+
+      def to_json(obj, opts = nil)
+        obj.to_json(opts_add_max_nesting(opts))
+      end
+
+      def to_json_pretty(obj, opts = nil)
+        ::JSON.pretty_generate(obj, opts_add_max_nesting(opts))
+      end
+    end
+  end
+end