Class: Capistrano::Systemd::MultiService::SystemService

Inherits:
Plugin
  • Object
show all
Defined in:
lib/capistrano/systemd/multiservice/system_service.rb

Direct Known Subclasses

UserService

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ SystemService

Returns a new instance of SystemService.



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# File 'lib/capistrano/systemd/multiservice/system_service.rb', line 11

def initialize(app)
  @app = app
  super()
end

Instance Attribute Details

#app ⇒ Object (readonly)

Returns the value of attribute app.



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# File 'lib/capistrano/systemd/multiservice/system_service.rb', line 9

def app
  @app
end

Instance Method Details

#daemon_reload ⇒ Object 



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# File 'lib/capistrano/systemd/multiservice/system_service.rb', line 98

def daemon_reload
  systemctl :"daemon-reload"
end

#default_units_dir ⇒ Object 



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# File 'lib/capistrano/systemd/multiservice/system_service.rb', line 74

def default_units_dir
  "/etc/systemd/system"
end

#define_tasks ⇒ Object 



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# File 'lib/capistrano/systemd/multiservice/system_service.rb', line 24

def define_tasks
  eval_rakefile File.expand_path("../../../tasks/systemd/multiservice/system_service.rake", __FILE__)
end

#nsp ⇒ Object 



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# File 'lib/capistrano/systemd/multiservice/system_service.rb', line 16

def nsp
  @app.to_sym
end

#prefix ⇒ Object 



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# File 'lib/capistrano/systemd/multiservice/system_service.rb', line 20

def prefix
  "systemd_#{@app}"
end

#register_hooks ⇒ Object 



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# File 'lib/capistrano/systemd/multiservice/system_service.rb', line 28

def register_hooks
  after   "deploy:check",          "systemd:#{nsp}:validate"
  after   "systemd:#{nsp}:setup",  "systemd:#{nsp}:daemon-reload"
  after   "systemd:#{nsp}:setup",  "systemd:#{nsp}:enable"
  before  "systemd:#{nsp}:remove", "systemd:#{nsp}:disable"
  after   "systemd:#{nsp}:remove", "systemd:#{nsp}:daemon-reload"
end

#remove ⇒ Object 



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# File 'lib/capistrano/systemd/multiservice/system_service.rb', line 85

def remove
  backend.sudo :rm, '-f', '--', fetch(:"#{prefix}_units_dest")
end

#set_defaults ⇒ Object 



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# File 'lib/capistrano/systemd/multiservice/system_service.rb', line 36

def set_defaults
  set_if_empty :"#{prefix}_role", ->{ :app }

  set_if_empty :"#{prefix}_units_src", ->{ Dir["config/systemd/#{@app}{,@}.*.erb"].sort }

  set_if_empty :"#{prefix}_units_dir", ->{ default_units_dir }

  set_if_empty :"#{prefix}_units_dest", ->{
    fetch(:"#{prefix}_units_src").map{|src|
      "%s/%s_%s" % [ fetch(:"#{prefix}_units_dir"), fetch(:application), File.basename(src, ".erb") ]
    }
  }

  set_if_empty :"#{prefix}_instances", ->{
    if fetch(:"#{prefix}_units_dest").map{|dst| File.basename(dst) }.find{|f| f =~ /@\.service\z/ }
      1.times.to_a
    else
      nil
    end
  }

  set_if_empty :"#{prefix}_service", ->{
    service = fetch(:"#{prefix}_units_dest").map{|dst| File.basename(dst) }.find{|f| f =~ /\.service\z/ && f !~ /@\.service\z/ }
    service || fetch(:"#{prefix}_instance_services")
  }

  set_if_empty :"#{prefix}_instance_services", ->{
    if fetch(:"#{prefix}_instances")
      fetch(:"#{prefix}_instances").map{|i|
        service_template = fetch(:"#{prefix}_units_dest").map{|dst| File.basename(dst) }.find{|f| f =~ /@\.service\z/ }
        service_template && service_template.sub(/@\.service\z/, "@#{i}.service")
      }
    else
      []
    end
  }
end

#setup ⇒ Object 



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# File 'lib/capistrano/systemd/multiservice/system_service.rb', line 78

def setup
  fetch(:"#{prefix}_units_src").zip(fetch(:"#{prefix}_units_dest")).each do |src, dest|
    buf = StringIO.new(ERB.new(File.read(src), nil, 2).result(binding))
    setup_service buf, src, dest
  end
end

#systemctl(*args) ⇒ Object 



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# File 'lib/capistrano/systemd/multiservice/system_service.rb', line 108

def systemctl(*args)
  args.unshift :sudo, :systemctl
  backend.execute(*args)
end

#validate ⇒ Object 



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# File 'lib/capistrano/systemd/multiservice/system_service.rb', line 89

def validate
  fetch(:"#{prefix}_units_dest").each do |dest|
    unless backend.test("[ -f #{dest} ]")
      backend.error "#{dest} not found"
      exit 1
    end
  end
end