organize rake build by moving tasks into task files

1 files changed, 56 insertions, 0 deletions

diff --git a/tasks/dependents.rake b/tasks/dependents.rake
new file mode 100644
index 00000000..2c185ca6
--- /dev/null
+++ b/tasks/dependents.rake
@@ -0,0 +1,56 @@
+# frozen_string_literal: true
+namespace :build do
+  desc 'Trigger builds for all dependent projects on Travis CI'
+  task :dependents do
+    if ENV['TRAVIS'].to_s == 'true'
+      next unless ENV['TRAVIS_PULL_REQUEST'].to_s == 'false' &&
+          ENV['TRAVIS_TAG'].to_s.empty? &&
+          (ENV['TRAVIS_JOB_NUMBER'].to_s.end_with? '.1')
+    end
+    # NOTE The TRAVIS_TOKEN env var must be defined in Travis interface.
+    # Retrieve this token using the `travis token` command.
+    # The GitHub user corresponding to the Travis user must have write access to the repository.
+    # After granting permission, sign into Travis and resync the repositories.
+    next unless (token = ENV['TRAVIS_TOKEN'])
+    require 'json'
+    require 'net/http'
+    require 'open-uri'
+    require 'yaml'
+    %w(
+      asciidoctor/asciidoctor.js
+      asciidoctor/asciidoctorj
+      asciidoctor/asciidoctor-diagram
+      asciidoctor/asciidoctor-reveal.js
+    ).each do |project|
+      org, name, branch = project.split '/', 3
+      branch ||= 'master'
+      project = [org, name, branch] * '/'
+      header = {
+        'Content-Type' => 'application/json',
+        'Accept' => 'application/json',
+        'Travis-API-Version' => '3',
+        'Authorization' => %(token #{token})
+      }
+      if (commit_hash = ENV['TRAVIS_COMMIT'])
+        commit_memo = %( (#{commit_hash.slice 0, 8})\n\nhttps://github.com/#{ENV['TRAVIS_REPO_SLUG'] || 'asciidoctor/asciidoctor'}/commit/#{commit_hash})
+      end
+      config = YAML.load open(%(https://raw.githubusercontent.com/#{project}/.travis-upstream-only.yml)) {|fd| fd.read } rescue {}
+      payload = {
+        'request' => {
+          'branch' => branch,
+          'message' => %(Build triggered by Asciidoctor#{commit_memo}),
+          'config' => config
+        }
+      }.to_json
+      (http = Net::HTTP.new 'api.travis-ci.org', 443).use_ssl = true
+      request = Net::HTTP::Post.new %(/repo/#{org}%2F#{name}/requests), header
+      request.body = payload
+      response = http.request request
+      if response.code == '202'
+        puts %(Successfully triggered build on #{project} repository)
+      else
+        warn %(Unable to trigger build on #{project} repository: #{response.code} - #{response.message})
+      end
+    end
+  end
+end