Class: Greenhouse::Commands::Launch

Inherits:
Object
  • Object
show all
Includes:
Command
Defined in:
lib/greenhouse/commands/launch.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Command

included

Class Method Details

.usage ⇒ Object 



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# File 'lib/greenhouse/commands/launch.rb', line 12

def usage
  puts <<USAGE
usage: #{::Greenhouse::CLI.command_name} #{command_name} <application> [<process> [<process> [...]]]

Applications:
#{project_arguments.to_help}
USAGE
end

Instance Method Details

#quit(signo) ⇒ Object 



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# File 'lib/greenhouse/commands/launch.rb', line 101

def quit(signo)
  @procs.each do |key,pid|
    begin
      Process.kill("KILL", pid)
    rescue # make sure to kill all children
    end
  end
  exit signo
end

#run ⇒ Object 



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# File 'lib/greenhouse/commands/launch.rb', line 22

def run
  if arguments.empty?
    puts "Please provide the application you'd like to launch."
    puts
    usage
    return
  end

  appname = arguments.slice!(0).key
  app = Projects.applications.select { |app| app.name == appname }.first
  
  if app.nil?
    if Projects.projects.select { |proj| proj.name == appname }.first.nil?
      puts "The application '#{appname}' does not exist."
    else
      puts "The project '#{appname}' is not defined as an application."
    end
    puts
    usage
    return
  end

  if !app.exists?
    puts "The application directory #{app.path} does not exist. Are you sure you've initialized your ecosystem?"
    puts
    usage
    return
  end

  Signal.trap("HUP") { |signo| quit(signo) }
  Signal.trap("INT") { |signo| quit(signo) }
  Signal.trap("KILL") { |signo| quit(signo) }
  Signal.trap("TERM") { |signo| quit(signo) }
  
  begin
    @procs = {}
    Bundler.with_clean_env do
      app.chdir do
        if app.dotenv.exists?
          begin
            # We have to unset these because foreman sets them by default, and Dotenv won't override a set value
            %w(PORT RACK_ENV RAILS_ENV).each { |key| ENV[key] = nil }
            require 'dotenv'
            Dotenv.load!
          rescue
            puts "Error parsing .env file for #{app.title.cyan}.".red
            exit 1
          end
        else
          puts "Warning: No .env file found in #{app.title.cyan}!".yellow
          puts "Your application may not behave as expected without a .env file."
        end
        
        unless app.procfile.exists?
          puts "No Procfile found for #{app.title.cyan}".red
          exit 1
        end

        app.procfile.enabled.each do |key,process|
          next if arguments.length > 0 && !arguments.map(&:key).include?(key)
          @procs[key] = process
        end

        arguments.map(&:key).each { |key| puts "Skipping process not found in Procfile: #{key}" unless @procs.keys.include?(key) }
        @procs.each do |key,process|
          @procs[key] = fork do
            exec process.command
          end
        end
        
        Process.wait
      end
    end
  rescue
    quit 1
  end

end