use s3 based deployment strategy.

2 files changed, 116 insertions, 0 deletions

diff --git a/lib/capistrano/s3.rb b/lib/capistrano/s3.rb
new file mode 100644
index 0000000..aa456ca
--- /dev/null
+++ b/lib/capistrano/s3.rb
@@ -0,0 +1,38 @@
+load File.expand_path("../../tasks/s3.rake", __FILE__)
+
+require 'capistrano/scm'
+
+class Capistrano::S3 < Capistrano::SCM
+  def s3(*args)
+    puts args.inspect
+    args.unshift '--profile default'
+    args.unshift :s3
+    args.unshift :aws
+    context.execute *args
+  end
+
+  module DefaultStrategy
+    def test
+      test! " [ -f #{repo_path}/HEAD ] "
+    end
+
+    def check
+      s3 'ls stronglifters'
+    end
+
+    def clone
+      context.execute("mkdir -p #{repo_path}")
+    end
+
+    def update
+      build = "stronglifters-2015-05-29-03-07-33.tar.gz"
+      s3 "cp s3://stronglifters/production/#{build} #{repo_path}/#{build}"
+    end
+
+    def release
+      build = "stronglifters-2015-05-29-03-07-33.tar.gz"
+      context.execute("mkdir -p #{release_path}")
+      context.execute("tar -xvzf #{repo_path}/#{build} --strip-components=1 -C #{release_path}")
+    end
+  end
+end
diff --git a/lib/tasks/s3.rake b/lib/tasks/s3.rake
new file mode 100644
index 0000000..461cade
--- /dev/null
+++ b/lib/tasks/s3.rake
@@ -0,0 +1,78 @@
+namespace :s3 do
+  def strategy
+    @strategy ||= Capistrano::S3.new(self, Capistrano::S3::DefaultStrategy)
+  end
+
+  set :s3_environmental_variables, ->() {
+    {
+      aws_access_key_id: fetch(:aws_access_key_id),
+      aws_secret_access_key: fetch(:aws_secret_access_key),
+      bucket_name: fetch(:s3_bucket),
+      build_revision: fetch(:build_revision),
+    }
+  }
+
+  task :wrapper do
+    on release_roles :all do
+    end
+  end
+
+  desc 'Check that the repository is reachable'
+  task check: :'s3:wrapper' do
+    fetch(:branch)
+    on release_roles :all do
+      with fetch(:s3_environmental_variables) do
+        strategy.check
+      end
+    end
+  end
+
+  desc 'Clone the repo to the cache'
+  task clone: :'s3:wrapper' do
+    on release_roles :all do
+      if strategy.test
+        info t(:mirror_exists, at: repo_path)
+      else
+        within deploy_path do
+          with fetch(:s3_environmental_variables) do
+            strategy.clone
+          end
+        end
+      end
+    end
+  end
+
+  desc 'Update the repo mirror to reflect the origin state'
+  task update: :'s3:clone' do
+    on release_roles :all do
+      within repo_path do
+        with fetch(:s3_environmental_variables) do
+          strategy.update
+        end
+      end
+    end
+  end
+
+  desc 'Copy repo to releases'
+  task create_release: :'s3:update' do
+    on release_roles :all do
+      with fetch(:s3_environmental_variables) do
+        within repo_path do
+          execute :mkdir, '-p', release_path
+          strategy.release
+        end
+      end
+    end
+  end
+
+  desc 'Determine the revision that will be deployed'
+  task :set_current_revision do
+    on release_roles :all do
+      within repo_path do
+        with fetch(:s3_environmental_variables) do
+          set :current_revision, fetch(:build_revision)
+        end
+      end
+    end
+  end
+end