Class: Falcon::Controller::Virtual

Inherits:
Async::Container::Controller
  • Object
show all
Defined in:
lib/falcon/controller/virtual.rb

Instance Method Summary collapse

Constructor Details

#initialize(command, **options) ⇒ Virtual

Returns a new instance of Virtual.



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# File 'lib/falcon/controller/virtual.rb', line 28

def initialize(command, **options)
  @command = command
  
  super(**options)
  
  trap(SIGHUP, &self.method(:reload))
end

Instance Method Details

#assume_privileges(path) ⇒ Object 



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# File 'lib/falcon/controller/virtual.rb', line 36

def assume_privileges(path)
  stat = File.stat(path)
  
  Process::GID.change_privilege(stat.gid)
  Process::UID.change_privilege(stat.uid)
  
  home = Etc.getpwuid(stat.uid).dir
  
  return {
    'HOME' => home,
  }
end

#falcon_path ⇒ Object 



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# File 'lib/falcon/controller/virtual.rb', line 59

def falcon_path
  File.expand_path("../../../bin/falcon", __dir__)
end

#setup(container) ⇒ Object 



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# File 'lib/falcon/controller/virtual.rb', line 63

def setup(container)
  if proxy = container[:proxy]
    proxy.kill(:HUP)
  end
  
  if redirect = container[:redirect]
    redirect.kill(:HUP)
  end
  
  container.reload do
    @command.resolved_paths do |path|
      path = File.expand_path(path)
      root = File.dirname(path)
      
      spawn(path, container, chdir: root)
    end
    
    container.spawn(name: "Falcon Redirector", restart: true, key: :redirect) do |instance|
      instance.exec(falcon_path, "redirect",
        "--bind", @command.bind_insecure,
        "--timeout", @command.timeout.to_s,
        "--redirect", @command.bind_secure,
        *@command.paths, ready: false
      )
    end
    
    container.spawn(name: "Falcon Proxy", restart: true, key: :proxy) do |instance|
      instance.exec(falcon_path, "proxy",
        "--bind", @command.bind_secure,
        "--timeout", @command.timeout.to_s,
        *@command.paths, ready: false
      )
    end
  end
end

#spawn(path, container, **options) ⇒ Object 



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# File 'lib/falcon/controller/virtual.rb', line 49

def spawn(path, container, **options)
  container.spawn(name: "Falcon Application", restart: true, key: path) do |instance|
    env = assume_privileges(path)
    
    instance.exec(env,
      "bundle", "exec", "--keep-file-descriptors",
      path, ready: false, **options)
  end
end