From d1acf03750f5345058ef7ca7edc46a95c4d7a7c4 Mon Sep 17 00:00:00 2001
From: Ben Johnson <bjohnson@binarylogic.com>
Date: Tue, 24 Sep 2019 10:57:23 -0400
Subject: [PATCH] chore: Prepare v0.4.0 release

Signed-off-by: Ben Johnson <bjohnson@binarylogic.com>
---
 Makefile                    |   4 ++
 scripts/release-commit.rb   |  10 ++-
 scripts/release-rollback.rb | 120 ++++++++++++++++++++++++++++++++++++
 3 files changed, 132 insertions(+), 2 deletions(-)
 create mode 100755 scripts/release-rollback.rb

diff --git a/Makefile b/Makefile
index 2516e72150518e..073315b2cb9915 100644
--- a/Makefile
+++ b/Makefile
@@ -91,6 +91,10 @@ release-meta: ## Prepares the release metadata
 	@bundle install --gemfile=scripts/Gemfile > /dev/null
 	@scripts/release-meta.rb
 
+release-rollback:
+	@bundle install --gemfile=scripts/Gemfile > /dev/null
+	@scripts/release-rollback.rb
+
 release-rpm: ## Release .rpm via Package Cloud
 	@scripts/release-rpm.sh
 
diff --git a/scripts/release-commit.rb b/scripts/release-commit.rb
index 4d47391ba203c1..12f9cbbdacddde 100755
--- a/scripts/release-commit.rb
+++ b/scripts/release-commit.rb
@@ -75,9 +75,9 @@ def release_exists?(release)
 
   commands =
     <<~EOF
-    git add docs/*
+    git add . -A
     git commit -sam 'chore: Prepare v#{release.version} release'
-    git push origin master
+    git push origin master --force
     git tag -a v#{release.version} -m "v#{release.version}"
     git push origin v#{release.version}
     git branch v#{branch_name}
@@ -86,12 +86,18 @@ def release_exists?(release)
 
   commands.chomp!
 
+  status = `git status --short`.chomp!
+
   words =
     <<~EOF
     We'll be releasing v#{release.version} with the following commands:
 
     #{commands.indent(2)}
 
+    Your current `git status` is:
+
+    #{status.indent(2)}
+
     Proceed to execute the above commands?
     EOF
 
diff --git a/scripts/release-rollback.rb b/scripts/release-rollback.rb
new file mode 100755
index 00000000000000..b244607797485c
--- /dev/null
+++ b/scripts/release-rollback.rb
@@ -0,0 +1,120 @@
+#!/usr/bin/env ruby
+
+# release-rollback.sh
+#
+# SUMMARY
+#
+#   Rolls back a fresh release. This should only be used in situations
+#   where the release process failed.
+
+#
+# Setup
+#
+
+# Changes into the scripts directory so that we can load the Bundler
+# dependencies. Unfortunately, Bundler does not provide a way load a Gemfile
+# outside of the cwd.
+Dir.chdir "scripts"
+
+#
+# Requires
+#
+
+require "rubygems"
+require "bundler"
+Bundler.require(:default)
+
+require_relative "util"
+
+#
+# Includes
+#
+
+include Printer
+
+#
+# Constants
+#
+
+ROOT_DIR = Pathname.new("#{Dir.pwd}/..").cleanpath
+
+DOCS_ROOT = File.join(ROOT_DIR, "docs")
+META_ROOT = File.join(ROOT_DIR, ".meta")
+
+#
+# Commit
+#
+
+metadata =
+  begin
+    Metadata.load(META_ROOT, DOCS_ROOT)
+  rescue Exception => e
+    error!(e.message)
+  end
+
+release = metadata.latest_release
+version = release.version
+
+#
+# Rollback
+#
+
+input = get("Do you want to rollback #{version}?")
+
+if input == "n"
+  error!("You can only rollback the latest release")
+end
+
+branch_commands =
+  if release.version.patch == 0
+    commands =
+      <<~EOF
+      git branch -d v#{version.major}.#{version.minor}
+      git push origin --delete v#{version.major}.#{version.minor}
+      EOF
+
+    commands.chomp
+  else
+    ""
+  end
+
+commands =
+  <<~EOF
+  git tag -d v#{version}
+  git push --delete origin v#{version}
+  #{branch_commands}
+  git reset HEAD~
+  EOF
+
+commands.chomp!
+
+words =
+  <<~EOF
+  We'll be rolling back v#{version} with the following commands:
+
+  #{commands.indent(2)}
+
+  Proceed to execute the above commands?
+  EOF
+
+if get(words, ["y", "n"]) == "n"
+  error!("Ok, I've aborted. Please re-run this command when you're ready.")
+end
+
+commands.chomp.split("\n").each do |command|
+    system(command)
+
+    if !$?.success?
+      error!(
+        <<~EOF
+        Command failed!
+
+          #{command}
+
+        Produced the following error:
+
+          #{$?.inspect}
+        EOF
+      )
+    end
+  end
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