Class: Origen::Application::Deployer

Inherits:
Object
  • Object
show all
Defined in:
lib/origen/application/deployer.rb

Overview

This class manages deploying an application's website.

The web pages are compiled in the local application workspace and deploy consists of copying them to the remote location.

Two directories are maintained in the remote location, one containing the live website and another where the new site is copied to during a deploy. A symlink is used to indicate which one of the two directories is currently being served.

Upon a successful copy the symlink is switched over, thereby providing zero-downtime deploys and guaranteeing that the old site will stay up if an error is encountered during a deploy.

An alternative method of deploying is also supported by pushing to a Git repository.

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#directory=(value) ⇒ Object (writeonly)

Sets the attribute directory

Parameters:

  • value

    the value to set the attribute directory to.



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# File 'lib/origen/application/deployer.rb', line 21

def directory=(value)
  @directory = value
end

#test=(value) ⇒ Object (writeonly)

Sets the attribute test

Parameters:

  • value

    the value to set the attribute test to.



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# File 'lib/origen/application/deployer.rb', line 21

def test=(value)
  @test = value
end

Instance Method Details



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# File 'lib/origen/application/deployer.rb', line 217

def create_symlink(from, to)
  `rm -f #{to}` if File.exist?(to)
  `ln -s #{from} #{to}` if File.exist?(from)
end

#create_web_server_dirObject



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# File 'lib/origen/application/deployer.rb', line 226

def create_web_server_dir
  if File.exist?("#{Origen.root}/templates/web")
    dir = web_server_dir
    FileUtils.rm_rf dir if File.exist?(dir)
    FileUtils.mkdir_p dir
    # Copy the web infrastructure
    FileUtils.cp_r Dir.glob("#{Origen.top}/templates/nanoc/*").sort, dir
    # Compile the dynamic stuff
    Origen.app.runner.launch action: :compile,
                             files:  "#{Origen.top}/templates/nanoc_dynamic",
                             output: dir
    unless Origen.root == Origen.top
      # Copy any application overrides if they exist
      if File.exist?("#{Origen.root}/templates/nanoc")
        FileUtils.cp_r Dir.glob("#{Origen.root}/templates/nanoc/*").sort, dir, remove_destination: true
      end
    end
    @nanoc_dir = dir
  end
end

#deploy_archive(id) ⇒ Object



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# File 'lib/origen/application/deployer.rb', line 206

def deploy_archive(id)
  dir = live_remote_directory
  if dir
    id.gsub!('.', '_')
    archive_dir = "#{Origen.config.web_directory}/#{id}"
    FileUtils.rm_rf(archive_dir) if File.exist?(archive_dir)
    FileUtils.mkdir_p archive_dir
    FileUtils.cp_r "#{Origen.root}/web/output/.", archive_dir
  end
end

#deploy_file(file) ⇒ Object



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# File 'lib/origen/application/deployer.rb', line 161

def deploy_file(file)
  remote_dir = deploy_to_git? ? "#{git_repo.local}/#{git_sub_dir}" : live_remote_directory
  if remote_dir
    file = Origen.file_handler.clean_path_to(file)
    sub_dir = Origen.file_handler.sub_dir_of(file, "#{Origen.root}/templates/web") .to_s
    page = file.basename.to_s.sub(/\..*/, '')
    # Special case for the main index page
    if page == 'index' && sub_dir == '.'
      FileUtils.cp "#{Origen.root}/web/output/index.html", remote_dir
      file = "#{remote_dir}/index.html"
    else
      FileUtils.mkdir_p("#{remote_dir}/#{sub_dir}/#{page}")
      file = "#{remote_dir}/#{sub_dir}/#{page}/index.html"
      FileUtils.cp "#{Origen.root}/web/output/#{sub_dir}/#{page}/index.html", file
    end
    if deploy_to_git?
      git_repo.checkin file, unmanaged: true, comment: @commit_message
    end
  end
end

#deploy_siteObject

Deploy a whole web site.

This copies the entire contents of web/output in the application directory to the remote server.



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# File 'lib/origen/application/deployer.rb', line 129

def deploy_site
  Origen.app.listeners_for(:before_deploy_site).each(&:before_deploy_site)
  if deploy_to_git?
    dir = git_repo.local.to_s
    dir += "/#{git_sub_dir}" if git_sub_dir
    # Delete everything so that we don't preserve old files
    git_repo.delete_all(git_sub_dir)
    FileUtils.mkdir_p(dir) unless File.exist?(dir)
    `chmod a+w -R #{Origen.root}/web/output`      # Ensure world writable, required?
    FileUtils.cp_r "#{Origen.root}/web/output/.", dir
    git_repo.checkin git_sub_dir, unmanaged: true, comment: @commit_message
  else
    # Empty the contents of the remote dir
    if File.exist?(offline_remote_directory)
      FileUtils.remove_dir(offline_remote_directory, true)
      require_remote_directories
    end
    # Copy the new contents across
    `chmod g+w -R #{Origen.root}/web/output`      # Ensure group writable
    FileUtils.cp_r "#{Origen.root}/web/output/.", offline_remote_directory
    `chmod g+w -R #{offline_remote_directory}`  # Double ensure group writable
    # Make live
    create_symlink offline_remote_directory, latest_symlink
    index = "#{Origen.config.web_directory}/index.html"
    # This symlink allows the site homepage to be accessed from the web root
    # directory rather than root directory/latest
    unless File.exist?(index)
      create_symlink "#{latest_symlink}/index.html", index
    end
  end
end

#deploy_to_git?Boolean

Returns:

  • (Boolean)


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# File 'lib/origen/application/deployer.rb', line 86

def deploy_to_git?
  !!(Origen.config.web_directory =~ /\.git\/?#{git_sub_dir}$/)
end

#generate_apiObject



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# File 'lib/origen/application/deployer.rb', line 182

def generate_api
  dir = "#{Origen.root}/web/output/api"
  FileUtils.rm_rf(dir) if File.exist?(dir)
  # system("cd #{Origen.root} && rdoc --op api --tab-width 4 --main api_doc/README.txt --title 'Origen (#{Origen.version})' api_doc lib/origen")
  if Origen.root == Origen.top
    title = "#{Origen.config.name} #{Origen.version}"
  else
    title = "#{Origen.config.name} #{Origen.app.version}"
  end
  system("yard doc --output-dir #{Origen.root}/web/output/api --title '#{title}'")
  # Yard doesn't have an option to ignore github-style READMEs, so force it here to
  # always present the API index on the API homepage for consistency
  index = "#{Origen.root}/web/output/api/index.html"
  _index = "#{Origen.root}/web/output/api/_index.html"
  FileUtils.rm_f(index) if File.exist?(index)
  # This removes a prominent link that we are left with to a README file that doesn't work
  require 'nokogiri'
  doc = Nokogiri::HTML(File.read(_index))
  doc.xpath('//h2[contains(text(), "File Listing")]').remove
  doc.css('#files').remove
  File.open(_index, 'w') { |f| f.write(doc.to_html) }
  FileUtils.cp(_index, index)
end

#git_repoObject

Returns a RevisionControl::Git object that points to a local copy of the website repo which is will build and checkout as required



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# File 'lib/origen/application/deployer.rb', line 62

def git_repo
  @git_repo ||= begin
    local_path = "#{Origen.config.web_directory.gsub('/', '-').symbolize}"
    local_path.gsub!(':', '-') if Origen.os.windows?
    local = Pathname.new("#{Origen.app.workspace_manager.imports_directory}/git/#{local_path}")
    if git_sub_dir
      remote = Origen.config.web_directory.sub("\/#{git_sub_dir}", '')
    else
      remote = Origen.config.web_directory
    end
    git = RevisionControl::Git.new(local: local, remote: remote)
    if git.initialized?
      git.checkout(force: true)
    else
      git.build(force: true)
    end
    git
  end
end

#git_sub_dirObject



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# File 'lib/origen/application/deployer.rb', line 54

def git_sub_dir
  if Origen.config.web_directory =~ /\.git\/(.*)$/
    Regexp.last_match(1)
  end
end


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# File 'lib/origen/application/deployer.rb', line 99

def latest_symlink
  "#{Origen.config.web_directory}/latest"
end

#live_remote_directoryObject



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# File 'lib/origen/application/deployer.rb', line 115

def live_remote_directory
  if File.exist?(latest_symlink)
    if File.readlink(latest_symlink) =~ /remote1/
      "#{Origen.config.web_directory}/remote1"
    elsif File.readlink(latest_symlink) =~ /remote2/
      "#{Origen.config.web_directory}/remote2"
    end
  end
end

#offline_remote_directoryObject



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# File 'lib/origen/application/deployer.rb', line 103

def offline_remote_directory
  if File.exist?(latest_symlink)
    if File.readlink(latest_symlink) =~ /remote1/
      "#{Origen.config.web_directory}/remote2"
    else
      "#{Origen.config.web_directory}/remote1"
    end
  else
    "#{Origen.config.web_directory}/remote1"
  end
end

#prepare!(options = {}) ⇒ Object

Prepare for deploying, this will raise an error if the current user is found to have insufficient permissions to deploy to the target directory



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# File 'lib/origen/application/deployer.rb', line 25

def prepare!(options = {})
  if deploy_to_git?
    require 'highline/import'
    @commit_message = options[:message] || options[:comment] || ask('Enter a deployment commit message:  ') do |q|
      q.validate = /\w/
      q.responses[:not_valid] = "Can't be blank"
    end
    Origen.log.info "Fetching the website's Git respository..."
    git_repo
    begin
      fail unless git_repo.can_checkin?
    rescue
      puts "Sorry, but you don't have permission to write to #{Origen.config.web_directory}!"
      exit 1
    end
  else
    begin
      require_remote_directories
      test_file = "#{Origen.config.web_directory}/_test_file.txt"
      FileUtils.rm_f(test_file) if File.exist?(test_file)
      FileUtils.touch(test_file)
      FileUtils.rm_f(test_file)
    rescue
      puts "Sorry, but you don't have permission to write to #{Origen.config.web_directory}!"
      exit 1
    end
  end
end

#require_remote_directoriesObject



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# File 'lib/origen/application/deployer.rb', line 90

def require_remote_directories
  %w(remote1 remote2).each do |dir|
    dir = "#{Origen.config.web_directory}/#{dir}"
    unless File.exist?(dir)
      FileUtils.mkdir_p dir
    end
  end
end

#test_run?Boolean

Returns:

  • (Boolean)


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# File 'lib/origen/application/deployer.rb', line 82

def test_run?
  @test
end

#web_server_dirObject



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# File 'lib/origen/application/deployer.rb', line 222

def web_server_dir
  "#{Origen.root}/web"
end