1 files changed, 72 insertions, 0 deletions
diff --git a/git/yaml_validation.rb b/git/yaml_validation.rb
new file mode 100755
index 000000000..f5ded7a78
--- /dev/null
+++ b/git/yaml_validation.rb
@@ -0,0 +1,72 @@
+#!/usr/bin/env ruby
+#
+#
+#
+require 'yaml'
+require 'tmpdir'
+
+class YamlValidate
+  def self.yaml_file?(filename)
+    return filename.end_with?('.yaml') || filename.end_with?('.yml')
+  end
+
+  def self.short_yaml_ext?(filename)
+    return filename.end_with?(".yml")
+  end
+
+  def self.valid_yaml?(filename)
+    YAML::load_file(filename)
+
+    return true
+  end
+end
+
+class GitCommit
+  attr_accessor :oldrev, :newrev, :refname, :tmp
+  def initialize(oldrev, newrev, refname)
+    @oldrev = oldrev
+    @newrev = newrev
+    @refname = refname
+    @tmp = Dir.mktmpdir(@newrev)
+  end
+
+  def get_file_changes()
+    files = %x[/usr/bin/git diff --name-only #{@oldrev} #{@newrev} --diff-filter=ACM].split("\n")
+
+    # if files is empty we will get a full checkout.  This happens on
+    # a git rm file.  If there are no changes then we need to skip the archive
+    return [] if files.empty?
+
+    # We only want to take the files that changed.  Archive will do that when passed
+    # the filenames.  It will export these to a tmp dir
+    system("/usr/bin/git archive #{@newrev} #{files.join(" ")} | tar x -C #{@tmp}")
+    return Dir.glob("#{@tmp}/**/*").delete_if { |file| File.directory?(file) }
+  end
+end
+
+if __FILE__ == $0
+  while data = STDIN.gets
+    oldrev, newrev, refname = data.split
+    gc = GitCommit.new(oldrev, newrev, refname)
+
+    results = []
+    gc.get_file_changes().each do |file|
+      begin
+        puts "++++++ Received:  #{file}"
+
+        #raise "Yaml file extensions must be .yaml not .yml" if YamlValidate.short_yaml_ext? file
+
+        # skip readme, other files, etc
+        next unless YamlValidate.yaml_file?(file)
+
+        results << YamlValidate.valid_yaml?(file)
+      rescue Exception => ex
+        puts "\n#{ex.message}\n\n"
+        results << false
+      end
+    end
+
+    #puts "RESULTS\n#{results.inspect}\n"
+    exit 1 if results.include?(false)
+  end
+end