Add rake task for generator release annoucnements

To ensure consistency, and to let users get the information they
want/need at a glance, we're introducing release announcement
templates. The Chef release team will use these tasks to generate the
release announcements before posting them to Discourse.

Signed-off-by: Tom Duffield <tom@chef.io>

1 files changed, 57 insertions, 0 deletions

diff --git a/tasks/announce.rb b/tasks/announce.rb
new file mode 100644
index 0000000000..854c53a21b
--- /dev/null
+++ b/tasks/announce.rb
@@ -0,0 +1,57 @@
+#
+# Copyright:: Copyright (c) 2016 Chef Software 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.
+#
+
+require 'date'
+require 'erb'
+
+class ReleaseAnnouncement
+  include ERB::Util
+  attr_accessor :type, :version, :date, :release_notes
+
+  def initialize(version, date, type)
+    @version = version
+    @date = Date.parse(date) unless date.nil?
+    @release_notes = release_notes_from_file
+    @type = type
+  end
+
+  def render
+    puts "-" * 30
+    puts ERB.new(template_for(@type)).result(binding)
+    puts "-" * 30
+  end
+
+  def template_for(type)
+    File.read("tasks/templates/#{type}.md.erb")
+  end
+
+  def release_notes_from_file
+    File.read("RELEASE_NOTES.md").match(/^# Chef Client Release Notes 12.17:\n\n(.*)/m)[1]
+  end
+end
+
+namespace :announce do
+  desc "Generate the Prerelease Announcement (version: X.Y.Z, release_date: YYYY-MM-DD)"
+  task :prerelease, :version, :release_date do |t, args|
+    ReleaseAnnouncement.new(args[:version], args[:release_date], "prerelease").render
+  end
+
+  desc "Generate the Release Announcement (version: X.Y.Z)"
+  task :release, :version do |t, args|
+    ReleaseAnnouncement.new(args[:version], nil, "release").render
+  end
+end