Class: Engineyard::Migrate::CLI

Inherits:
Thor
  • Object
show all
Includes:
EY::UtilityMethods
Defined in:
lib/engineyard-migrate/cli.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#verbose ⇒ Object (readonly)

Returns the value of attribute verbose.



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# File 'lib/engineyard-migrate/cli.rb', line 14

def verbose
  @verbose
end

Instance Method Details

#heroku(path) ⇒ Object 



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# File 'lib/engineyard-migrate/cli.rb', line 20

def heroku(path)
  @verbose = options[:verbose]
  error "Path '#{path}' does not exist" unless File.exists? path
  FileUtils.chdir(path) do
    begin
      heroku_repo = `git config remote.heroku.url`.strip
      if heroku_repo.empty?
        error "Not a Salesforce Heroku application."
      end
      heroku_repo =~ /git@heroku\.com:(.*)\.git/
      heroku_app_name = $1

      say "Requesting Heroku account information..."; $stdout.flush
      say "Heroku app:     "; say heroku_app_name, :green

      say `heroku info`
      say ""

      repo = `git config remote.origin.url`.strip
      if repo.empty?
        error "Please host your Git repo externally and add as remote 'origin'.", <<-SUGGESTION.gsub(/^\s{12}/, '')
        You can create a GitHub repository using 'github' gem:
          $ gem install github
          $ gh create-from-local --private
        SUGGESTION
      end
      unless EY::API.new.token
        error "Please create, boot and deploy an AppCloud application for #{repo}."
      end

      say "Requesting AppCloud account information..."; $stdout.flush
      @app, @environment = fetch_app_and_environment(options[:app], options[:environment], options[:account])

      unless @app.repository_uri == repo
        error "Please create, boot and deploy an AppCloud application for #{repo}."
      end
      unless @environment.app_master
        error "Please boot your AppCloud environment and then deploy your application."
      end

      @app.name = @app.name
      app_master_host = @environment.app_master.public_hostname
      app_master_user = @environment.username

      say   "Application:    "; say   "#{@app.name}", :green
      say   "Account:        "; say   "#{@environment..name}", :green
      say   "Environment:    "; say   "#{@environment.name}", :green
      say   "Cluster size:   "; say   "#{@environment.instances_count}"
      say   "Hostname:       "; say   "#{app_master_host}"
      debug "$RACK_ENV:      "; debug "#{@environment.framework_env}"
      say ""

      # TODO - what if no application deployed yet?
      # bash: line 0: cd: /data/heroku2eysimpleapp/current: No such file or directory

      # TODO - to test for cron setup:
      # dna_env["cron"] - list of:
      # [0] {
      #      "minute" => "0",
      #        "name" => "rake cron",
      #     "command" => "cd /data/heroku2eysimpleapp/current && RAILS_ENV=production rake cron",
      #       "month" => "*",
      #        "hour" => "1",
      #         "day" => "*/1",
      #        "user" => "deploy",
      #     "weekday" => "*"
      # }

      say "Testing AppCloud application status..."

      deploy_path_found = ssh_appcloud "test -d #{@app.name}/current && echo 'found'",
        :path => '/data', :return_output => true
      error "Please deploy your AppCloud application before running migration." unless deploy_path_found =~ /found/

      say "Setting up Heroku on AppCloud..."

      ssh_appcloud "sudo gem install heroku taps sqlite3 mysql2 pg --no-ri --no-rdoc -q"
      ssh_appcloud "git remote rm heroku 2> /dev/null; git remote add heroku #{heroku_repo} 2> /dev/null"

      say "Uploading Heroku credential file..."
      home_path = ssh_appcloud("pwd", :path => "~", :return_output => true)
      debug "AppCloud $HOME: "; debug home_path, :yellow

      require 'heroku/auth'
      netrc_file = File.basename(Heroku::Auth.netrc_path)
      remote_netrc = File.join(home_path, ".netrc")
      Net::SFTP.start(app_master_host, app_master_user) do |sftp|
        sftp.upload!(Heroku::Auth.netrc_path, remote_netrc)
      end
      ssh_appcloud("chmod 0600 #{remote_netrc}")
      say ""

      say "Migrating data from Heroku '#{heroku_app_name}' to AppCloud '#{@app.name}'..."
      env_vars = %w[RAILS_ENV RACK_ENV MERB_ENV].map {|var| "#{var}=#{@environment.framework_env}" }.join(" ")
      ssh_appcloud "#{env_vars} heroku db:pull --confirm #{heroku_app_name} 2>&1"
      say ""

      say "Migration complete!", :green
    rescue SystemExit
    rescue EY::MultipleMatchesError => e
      envs = []
      e.message.split(/\n/).map do |line|
        env = {}
        line.scan(/--([^=]+)='([^']+)'/) do
          env[$1] = $2
        end
        envs << env unless env.empty?
      end
      too_many_environments_discovered 'heroku', envs, path
    rescue Net::SSH::AuthenticationFailed => e
      error "Please setup your SSH credentials for AppCloud."
    rescue Net::SFTP::StatusException => e
      error e.description + ": " + e.text
    rescue Exception => e
      say "Migration failed", :red
      puts e.inspect
      puts e.backtrace
    end
  end
end