Merge branch 'OC-4668'

3 files changed, 499 insertions, 0 deletions

diff --git a/spec/data/git_bundles/sinatra-test-app-with-callback-files.gitbundle b/spec/data/git_bundles/sinatra-test-app-with-callback-files.gitbundle
new file mode 100644
index 0000000000..24e36f7eeb
--- /dev/null
+++ b/spec/data/git_bundles/sinatra-test-app-with-callback-files.gitbundle
diff --git a/spec/data/git_bundles/sinatra-test-app.gitbundle b/spec/data/git_bundles/sinatra-test-app.gitbundle
new file mode 100644
index 0000000000..43c54eae5c
--- /dev/null
+++ b/spec/data/git_bundles/sinatra-test-app.gitbundle
diff --git a/spec/functional/resource/deploy_revision_spec.rb b/spec/functional/resource/deploy_revision_spec.rb
new file mode 100644
index 0000000000..a9d5b4800e
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+++ b/spec/functional/resource/deploy_revision_spec.rb
@@ -0,0 +1,499 @@
+#
+# Author:: Daniel DeLeo (<dan@opscode.com>)
+# Copyright:: Copyright (c) 2012 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.
+#
+
+require 'spec_helper'
+require 'tmpdir'
+
+# Deploy relies heavily on symlinks, so it doesn't work on windows.
+describe Chef::Resource::DeployRevision, :unix_only => true do
+
+  let(:file_cache_path) { Dir.mktmpdir }
+  let(:deploy_directory) { Dir.mktmpdir }
+
+  # By making restart or other operations write to this file, we can externally
+  # track the order in which those operations happened.
+  let(:observe_order_file) { Tempfile.new("deploy-resource-observe-operations") }
+
+  before do
+    @old_file_cache_path = Chef::Config[:file_cache_path]
+    Chef::Config[:file_cache_path] = file_cache_path
+  end
+
+  after do
+    Chef::Config[:file_cache_path] = @old_file_cache_path
+    FileUtils.remove_entry_secure deploy_directory if File.exist?(deploy_directory)
+    FileUtils.remove_entry_secure file_cache_path
+    observe_order_file.close
+    FileUtils.remove_entry_secure observe_order_file
+  end
+
+  before(:all) do
+    @ohai = Ohai::System.new
+    @ohai.require_plugin("os")
+  end
+
+  let(:node) do
+
+    Chef::Node.new.tap do |n|
+      n.name "rspec-test"
+      n.consume_external_attrs(@ohai.data, {})
+    end
+  end
+
+  let(:event_dispatch) { Chef::EventDispatch::Dispatcher.new }
+  let(:run_context) { Chef::RunContext.new(node, {}, event_dispatch) }
+
+
+  # These tests use git's bundle feature, which is a way to export an entire
+  # git repo (or subset of commits) as a single file.
+  #
+  # Generally you can treat a git bundle as a regular git remote.
+  #
+  # See also: http://git-scm.com/2010/03/10/bundles.html
+  let(:git_bundle_repo) { File.expand_path("git_bundles/sinatra-test-app.gitbundle", CHEF_SPEC_DATA) }
+
+  let(:git_bundle_with_in_repo_callbacks) { File.expand_path("git_bundles/sinatra-test-app-with-callback-files.gitbundle", CHEF_SPEC_DATA) }
+
+  # This is the fourth version
+  let(:latest_rev) { "3eb5ca6c353c83d9179dd3b29347539829b401f3" }
+
+  # This is the third version
+  let(:previous_rev) { "6d19a6dbecc8e37f5b2277345885c0c783eb8fb1" }
+
+
+  # This is the sixth version, it is on the "with-deploy-scripts" branch
+  let(:rev_with_in_repo_callbacks) { "2404d015882659754bdb93ad6e4b4d3d02691a82" }
+
+  # Read values from the +observe_order_file+ and split each line. This way you
+  # can see in which order things really happened.
+  def actual_operations_order
+    IO.read(observe_order_file.path).split("\n").map(&:strip)
+  end
+
+  # 1. touch `restart.txt` in cwd so we know that the command is run with the
+  #    right cwd.
+  # 2. Append +tag+ to the `observe_order_file` so we can check the order in
+  #    which operations happen later in the test.
+  def shell_restart_command(tag)
+    "touch restart.txt && echo '#{tag}' >> #{observe_order_file.path}"
+  end
+
+  let(:basic_deploy_resource) do
+    Chef::Resource::DeployRevision.new(deploy_directory, run_context).tap do |r|
+      r.repo git_bundle_repo
+      r.symlink_before_migrate({})
+      r.symlinks({})
+    end
+  end
+
+  let(:deploy_to_latest_rev) do
+    basic_deploy_resource.dup.tap do |r|
+      r.revision(latest_rev)
+      r.restart_command shell_restart_command(:deploy_to_latest_rev)
+    end
+  end
+
+  let(:deploy_to_previous_rev) do
+    basic_deploy_resource.dup.tap do |r|
+      r.revision(previous_rev)
+      r.restart_command shell_restart_command(:deploy_to_previous_rev)
+    end
+  end
+
+  let(:deploy_to_latest_rev_again) do
+    basic_deploy_resource.dup.tap do |r|
+      r.revision(latest_rev)
+      r.restart_command shell_restart_command(:deploy_to_latest_rev_again)
+    end
+  end
+
+  # Computes the full path for +path+ relative to the deploy directory
+  def rel_path(path)
+    File.expand_path(path, deploy_directory)
+  end
+
+  def actual_current_rev
+    Dir.chdir(rel_path("current")) do
+      `git rev-parse HEAD`.strip
+    end
+  end
+
+  def self.the_app_is_deployed_at_revision(target_rev_spec)
+    it "deploys the app to the target revision (#{target_rev_spec})" do
+      target_rev = send(target_rev_spec)
+
+      File.should exist(rel_path("current"))
+
+      actual_current_rev.should == target_rev
+
+      # Is the app code actually there?
+      File.should exist(rel_path("current/app/app.rb"))
+    end
+  end
+
+  context "when deploying a simple app" do
+    describe "for the first time, with the required directory layout precreated" do
+      before do
+        FileUtils.mkdir_p(rel_path("releases"))
+        FileUtils.mkdir_p(rel_path("shared"))
+        deploy_to_latest_rev.run_action(:deploy)
+      end
+
+      the_app_is_deployed_at_revision(:latest_rev)
+
+      it "restarts the application" do
+        File.should exist(rel_path("current/restart.txt"))
+        actual_operations_order.should == %w[deploy_to_latest_rev]
+      end
+
+      it "is marked as updated" do
+        deploy_to_latest_rev.should be_updated_by_last_action
+      end
+    end
+
+    describe "back to a previously deployed revision, with the directory structure precreated" do
+      before do
+        FileUtils.mkdir_p(rel_path("releases"))
+        FileUtils.mkdir_p(rel_path("shared"))
+
+        deploy_to_latest_rev.run_action(:deploy)
+        deploy_to_previous_rev.run_action(:deploy)
+        deploy_to_latest_rev_again.run_action(:deploy)
+      end
+
+      the_app_is_deployed_at_revision(:latest_rev)
+
+      it "restarts the application after rolling back" do
+        actual_operations_order.should == %w[deploy_to_latest_rev deploy_to_previous_rev deploy_to_latest_rev_again]
+      end
+
+      it "is marked updated" do
+        deploy_to_latest_rev_again.should be_updated_by_last_action
+      end
+
+      it "deploys the right code" do
+        IO.read(rel_path("current/app/app.rb")).should include("this is the fourth version of the app")
+      end
+    end
+
+    describe "for the first time, with no existing directory layout" do
+      before do
+        deploy_to_latest_rev.run_action(:deploy)
+      end
+
+      it "creates the required directory tree" do
+        File.should be_directory(rel_path("releases"))
+        File.should be_directory(rel_path("shared"))
+        File.should be_directory(rel_path("releases/#{latest_rev}"))
+
+        File.should be_directory(rel_path("current/tmp"))
+        File.should be_directory(rel_path("current/config"))
+        File.should be_directory(rel_path("current/public"))
+
+        File.should be_symlink(rel_path("current"))
+        File.readlink(rel_path("current")).should == rel_path("releases/#{latest_rev}")
+      end
+
+      the_app_is_deployed_at_revision(:latest_rev)
+
+      it "restarts the application" do
+        File.should exist(rel_path("current/restart.txt"))
+        actual_operations_order.should == %w[deploy_to_latest_rev]
+      end
+
+      it "is marked as updated" do
+        deploy_to_latest_rev.should be_updated_by_last_action
+      end
+    end
+
+    describe "again to the current revision" do
+      before do
+        deploy_to_latest_rev.run_action(:deploy)
+        deploy_to_latest_rev.run_action(:deploy)
+      end
+
+      the_app_is_deployed_at_revision(:latest_rev)
+
+      it "does not restart the app" do
+        actual_operations_order.should == %w[deploy_to_latest_rev]
+      end
+
+      it "is not marked updated" do
+        deploy_to_latest_rev.should_not be_updated_by_last_action
+      end
+
+    end
+
+    describe "again with force_deploy" do
+      before do
+        deploy_to_latest_rev.run_action(:force_deploy)
+        deploy_to_latest_rev_again.run_action(:force_deploy)
+      end
+
+      the_app_is_deployed_at_revision(:latest_rev)
+
+      it "restarts the app" do
+        actual_operations_order.should == %w[deploy_to_latest_rev deploy_to_latest_rev_again]
+      end
+
+      it "is marked updated" do
+        deploy_to_latest_rev.should be_updated_by_last_action
+      end
+
+    end
+
+    describe "again to a new revision" do
+      before do
+        deploy_to_previous_rev.run_action(:deploy)
+        deploy_to_latest_rev.run_action(:deploy)
+      end
+
+      the_app_is_deployed_at_revision(:latest_rev)
+
+      it "restarts the application after the new deploy" do
+        actual_operations_order.should == %w[deploy_to_previous_rev deploy_to_latest_rev]
+      end
+
+      it "is marked updated" do
+        deploy_to_previous_rev.should be_updated_by_last_action
+      end
+    end
+
+    describe "back to a previously deployed revision (implicit rollback)" do
+      before do
+        deploy_to_latest_rev.run_action(:deploy)
+        deploy_to_previous_rev.run_action(:deploy)
+        deploy_to_latest_rev_again.run_action(:deploy)
+      end
+
+      the_app_is_deployed_at_revision(:latest_rev)
+
+      it "restarts the application after rolling back" do
+        actual_operations_order.should == %w[deploy_to_latest_rev deploy_to_previous_rev deploy_to_latest_rev_again]
+      end
+
+      it "is marked updated" do
+        deploy_to_latest_rev_again.should be_updated_by_last_action
+      end
+
+      it "deploys the right code" do
+        IO.read(rel_path("current/app/app.rb")).should include("this is the fourth version of the app")
+      end
+    end
+
+    # CHEF-3435
+    describe "to a deploy_to path that does not yet exist" do
+
+      let(:top_level_tmpdir) { Dir.mktmpdir }
+
+      # override top level deploy_directory let block with one that is two
+      # directories deeper
+      let(:deploy_directory) { File.expand_path("nested/deeper", top_level_tmpdir) }
+
+      after do
+        FileUtils.remove_entry_secure top_level_tmpdir
+      end
+
+      before do
+        File.should_not exist(deploy_directory)
+        deploy_to_latest_rev.run_action(:deploy)
+      end
+
+      it "creates the required directory tree" do
+        File.should be_directory(rel_path("releases"))
+        File.should be_directory(rel_path("shared"))
+        File.should be_directory(rel_path("releases/#{latest_rev}"))
+
+        File.should be_directory(rel_path("current/tmp"))
+        File.should be_directory(rel_path("current/config"))
+        File.should be_directory(rel_path("current/public"))
+
+        File.should be_symlink(rel_path("current"))
+        File.readlink(rel_path("current")).should == rel_path("releases/#{latest_rev}")
+      end
+
+      the_app_is_deployed_at_revision(:latest_rev)
+
+    end
+  end
+
+  context "when deploying an app with inline recipe callbacks" do
+
+    # Use closures to capture and mutate this variable. This allows us to track
+    # ordering of operations.
+    callback_order = []
+
+    let(:deploy_to_latest_with_inline_recipes) do
+      deploy_to_latest_rev.dup.tap do |r|
+        r.symlink_before_migrate "config/config.ru" => "config.ru"
+        r.before_migrate do
+          callback_order << :before_migrate
+
+          file "#{release_path}/before_migrate.txt" do
+            # The content here isn't relevant, but it gets printed when running
+            # the tests. Could be handy for debugging.
+            content callback_order.inspect
+          end
+        end
+        r.before_symlink do
+          callback_order << :before_symlink
+
+          current_release_path = release_path
+          ruby_block "ensure before symlink" do
+            block do
+              if File.exist?(File.join(current_release_path, "/tmp"))
+                raise "Ordering issue with provider, expected symlinks to not have been created"
+              end
+            end
+          end
+
+          file "#{release_path}/before_symlink.txt" do
+            content callback_order.inspect
+          end
+        end
+        r.before_restart do
+          callback_order << :before_restart
+
+          current_release_path = release_path
+          ruby_block "ensure after symlink" do
+            block do
+              unless File.exist?(File.join(current_release_path, "/tmp"))
+                raise "Ordering issue with provider, expected symlinks to have been created"
+              end
+            end
+          end
+
+          file "#{release_path}/tmp/before_restart.txt" do
+            content callback_order.inspect
+          end
+        end
+        r.after_restart do
+          callback_order << :after_restart
+          file "#{release_path}/tmp/after_restart.txt" do
+            content callback_order.inspect
+          end
+        end
+      end
+    end
+
+    before do
+      callback_order.clear # callback_order variable is global for this context group
+      deploy_to_latest_with_inline_recipes.run_action(:deploy)
+    end
+
+    the_app_is_deployed_at_revision(:latest_rev)
+
+    it "is marked updated" do
+      deploy_to_latest_with_inline_recipes.should be_updated_by_last_action
+    end
+
+    it "calls the callbacks in order" do
+      callback_order.should == [:before_migrate, :before_symlink, :before_restart, :after_restart]
+    end
+
+    it "runs chef resources in the callbacks" do
+      File.should exist(rel_path("current/before_migrate.txt"))
+      File.should exist(rel_path("current/before_symlink.txt"))
+      File.should exist(rel_path("current/tmp/before_restart.txt"))
+      File.should exist(rel_path("current/tmp/after_restart.txt"))
+    end
+  end
+
+  context "when deploying an app with in-repo callback scripts" do
+    let(:deploy_with_in_repo_callbacks) do
+      basic_deploy_resource.dup.tap do |r|
+        r.repo git_bundle_with_in_repo_callbacks
+        r.revision rev_with_in_repo_callbacks
+      end
+    end
+
+    before do
+      deploy_with_in_repo_callbacks.run_action(:deploy)
+    end
+
+    the_app_is_deployed_at_revision(:rev_with_in_repo_callbacks)
+
+    it "runs chef resources in the callbacks" do
+      File.should exist(rel_path("current/before_migrate.txt"))
+      File.should exist(rel_path("current/before_symlink.txt"))
+      File.should exist(rel_path("current/tmp/before_restart.txt"))
+      File.should exist(rel_path("current/tmp/after_restart.txt"))
+    end
+
+  end
+
+  context "when deploying an app with migrations" do
+    let(:deploy_with_migration) do
+      basic_deploy_resource.dup.tap do |r|
+
+        # Need this so we can call methods from this test inside the inline
+        # recipe callbacks
+        spec_context = self
+
+        r.revision latest_rev
+
+        # enable migrations
+        r.migrate true
+        # abuse `shell_restart_command` so we can observe order of when the
+        # miration command gets run
+        r.migration_command shell_restart_command("migration")
+        r.before_migrate do
+
+          # inline recipe callbacks don't cwd, so you have to get the release
+          # directory as a local and "capture" it in the closure.
+          current_release = release_path
+          execute spec_context.shell_restart_command("before_migrate") do
+            cwd current_release
+          end
+        end
+        r.before_symlink do
+          current_release = release_path
+          execute spec_context.shell_restart_command("before_symlink") do
+            cwd current_release
+          end
+        end
+
+        r.before_restart do
+          current_release = release_path
+          execute spec_context.shell_restart_command("before_restart") do
+            cwd current_release
+          end
+        end
+
+        r.after_restart do
+          current_release = release_path
+          execute spec_context.shell_restart_command("after_restart") do
+            cwd current_release
+          end
+        end
+
+      end
+    end
+
+    before do
+      deploy_with_migration.run_action(:deploy)
+    end
+
+    it "runs migrations in between the before_migrate and before_symlink steps" do
+      actual_operations_order.should == %w[before_migrate migration before_symlink before_restart after_restart]
+    end
+  end
+
+end
+
+