Class: SlackNotificationGenerator

Inherits:
Object
  • Object
show all
Defined in:
lib/slack_notification_generator/main.rb

Class Method Summary collapse

Class Method Details

.add_attachment(store, title, data) ⇒ Object 



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# File 'lib/slack_notification_generator/main.rb', line 128

def self.add_attachment(store, title, data)
  return if data.nil? || data.length == 0
  data.map! do |line|
    line.split("\n").map(&:strip).join("\n  ")
  end
  store <<
    {
      title: title,
      text: data.map { |l| "• #{l}" }.join("\n")
    }
end

.extract_commits(blob) ⇒ Object 



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# File 'lib/slack_notification_generator/main.rb', line 102

def self.extract_commits(blob)
  commits = []
  commit = nil
  blob.split("\n").map(&:strip).each do |line|
    case line
    when /^commit ([0-9a-f]+)$/
      commits << commit unless commit.nil?
      commit = { hash: $1[0..6], skip: false }
    when /^Author: ([a-zA-Z]+)/
      commit[:author] = $1.downcase
    when /^Date: +(.*)$/
      commit[:date] = Date.parse($1)
    when /^([A-Z]+-[0-9]+)/
      commit[:issue] = $1
      if line =~ /#time +([0-9][^\s]*)/
        commit[:time] = $1
      end
    else
      commit[:message] ||= line unless line.empty?
      commit[:skip] = true if line =~ /\[skip ci\]/
    end
  end
  commits << commit unless commit.nil?
  commits
end

.format(commit) ⇒ Object 



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# File 'lib/slack_notification_generator/main.rb', line 140

def self.format(commit)
  commit[:authors] ||= [commit[:author]].compact
  commit[:issues] ||= [commit[:issue]].compact
  commit[:times] ||= [commit[:time]].compact
  link =
    if commit[:pull]
      if ENV['SLACK_REPO']
        "<#{ENV['SLACK_REPO']}/pull/#{commit[:pull]}|##{commit[:pull]}>"
      else
        "##{commit[:pull]}"
      end
    else
      if ENV['SLACK_REPO']
        "<#{ENV['SLACK_REPO']}/commit/#{commit[:hash]}|##{commit[:hash]}>"
      else
        "##{commit[:hash]}"
      end
    end
  issues =
    if commit[:issues].empty?
      nil
    else
      commit[:issues].map do |issue|
        if ENV['SLACK_JIRA']
          "<#{ENV['SLACK_JIRA']}/browse/#{issue}|#{issue}>"
        else
          issue
        end
      end.join(', ')
    end
  time =
    if commit[:times].empty?
      nil
    else
      seconds =
        commit[:times].map do |data|
          ChronicDuration.parse(data)
        end.reduce(:+)
      ChronicDuration.output(seconds)
    end
  extras = [issues, commit[:authors].join(', '), time].compact.join(', ')
  if commit[:message].length > 50
    commit[:message] = commit[:message][0, 50] + "..."
  end
  "    \#{link} \#{commit[:message]} [\#{extras}]\n  eos\nend\n"

.run ⇒ Object 



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# File 'lib/slack_notification_generator/main.rb', line 8

def self.run
  unless ENV['SLACK_HOOK']
    puts 'you must define the "SLACK_HOOK" environment variable'
    exit 1
  end

  env =
    case ENV['CI_BRANCH']
    when 'master'
      'Production'
    when 'develop'
      'Staging'
    when /^release/
      'Release'
    else
      'Development'
    end

  changelog = []

  this_tag = 'HEAD'
  prev_tag = `git describe --abbrev=0 --tags`.strip

  unless ARGV[0] == "HEAD"
    this_tag = prev_tag
    prev_tag = `git describe --abbrev=0 --tags #{this_tag}^`.strip
  end

  commits = []
  commit = nil
  blob = `git log --merges #{this_tag} ^#{prev_tag}`
  blob.split("\n").map(&:strip).each do |line|
    case line
    when /^commit ([0-9a-f]+)$/
      commits << commit unless commit.nil?
      commit = { hash: $1[0..6] }
    when /^Merge: ([a-f0-9]+) ([a-f0-9]+)/
      commit[:range] = ($1..$2)
    when /^Author: ([a-zA-Z]+)/
    when /^Date: +(.*)$/
      commit[:date] = Date.parse($1)
    when /^Merge pull request #([0-9]*) /
      commit[:pull] = $1
    else
      commit[:message] ||= line unless line.empty?
    end
  end
  commits << commit unless commit.nil?

  pull_requests = []
  commit_filter = {}
  commits.each do |commit|
    next unless commit[:pull]
    blob = `git log --no-merges #{commit[:range].last} ^#{commit[:range].first}`
    commit[:authors] = []
    commit[:issues] = []
    commit[:times] = []
    extract_commits(blob).each do |child|
      commit_filter[child[:hash]] = true
      commit[:authors] << child[:author]
      commit[:issues] << child[:issue] if child[:issue]
      commit[:times] << child[:time] if child[:time]
    end
    commit[:authors].sort!.uniq!
    commit[:issues].sort!.uniq!
    pull_requests << commit
  end
  pull_requests.map! { |commit| format(commit) }

  blob = `git log --no-merges #{this_tag} ^#{prev_tag}`
  other_commits = []
  extract_commits(blob).each do |commit|
    next if commit_filter[commit[:hash]] || commit[:skip]
    other_commits << commit
  end
  other_commits.map! { |commit| format(commit) }

  attachments = []
  add_attachment(attachments, "Pull Requests", pull_requests)
  add_attachment(attachments, "Other Commits", other_commits)
  exit if attachments.length == 0

  payload =
    {
      username: ENV['SLACK_USER'] || 'Notification',
      icon_emoji: ENV['SLACK_ICON'] || ':bell:',
      channel: ENV['SLACK_CHAN'] || '#general',
      text: "*#{[ENV['SLACK_NAME'], env].compact.join(' ')} Release*",
      attachments: attachments
    }

  `curl -X POST --data-urlencode 'payload=#{payload.to_json}' #{ENV['SLACK_HOOK']}`
end