Class: Mrsk::Cli::App

Inherits:
Base
  • Object
show all
Defined in:
lib/mrsk/cli/app.rb

Instance Method Summary collapse

Methods inherited from Base

exit_on_failure?, #initialize

Constructor Details

This class inherits a constructor from Mrsk::Cli::Base

Instance Method Details

#boot ⇒ Object 



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# File 'lib/mrsk/cli/app.rb', line 3

def boot
  mutating do
    hold_lock_on_error do
      say "Get most recent version available as an image...", :magenta unless options[:version]
      using_version(version_or_latest) do |version|
        say "Start container with version #{version} using a #{MRSK.config.readiness_delay}s readiness delay (or reboot if already running)...", :magenta

        on(MRSK.hosts) do
          execute *MRSK.auditor.record("Tagging #{MRSK.config.absolute_image} as the latest image"), verbosity: :debug
          execute *MRSK.app.tag_current_as_latest
        end

        on(MRSK.hosts, **MRSK.boot_strategy) do |host|
          roles = MRSK.roles_on(host)

          roles.each do |role|
            app = MRSK.app(role: role)
            auditor = MRSK.auditor(role: role)

            if capture_with_info(*app.container_id_for_version(version, only_running: true), raise_on_non_zero_exit: false).present?
              tmp_version = "#{version}_replaced_#{SecureRandom.hex(8)}"
              info "Renaming container #{version} to #{tmp_version} as already deployed on #{host}"
              execute *auditor.record("Renaming container #{version} to #{tmp_version}"), verbosity: :debug
              execute *app.rename_container(version: version, new_version: tmp_version)
            end

            execute *auditor.record("Booted app version #{version}"), verbosity: :debug

            old_version = capture_with_info(*app.current_running_version, raise_on_non_zero_exit: false).strip
            execute *app.start_or_run(hostname: "#{host}-#{SecureRandom.hex(6)}")

            Mrsk::Utils::HealthcheckPoller.wait_for_healthy(pause_after_ready: true) { capture_with_info(*app.status(version: version)) }

            execute *app.stop(version: old_version), raise_on_non_zero_exit: false if old_version.present?
          end
        end
      end
    end
  end
end

#containers ⇒ Object 



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# File 'lib/mrsk/cli/app.rb', line 131

def containers
  on(MRSK.hosts) { |host| puts_by_host host, capture_with_info(*MRSK.app.list_containers) }
end

#details ⇒ Object 



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# File 'lib/mrsk/cli/app.rb', line 74

def details
  on(MRSK.hosts) do |host|
    roles = MRSK.roles_on(host)

    roles.each do |role|
      puts_by_host host, capture_with_info(*MRSK.app(role: role).info)
    end
  end
end

#exec(cmd) ⇒ Object 



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# File 'lib/mrsk/cli/app.rb', line 87

def exec(cmd)
  case
  when options[:interactive] && options[:reuse]
    say "Get current version of running container...", :magenta unless options[:version]
    using_version(options[:version] || current_running_version) do |version|
      say "Launching interactive command with version #{version} via SSH from existing container on #{MRSK.primary_host}...", :magenta
      run_locally { exec MRSK.app(role: "web").execute_in_existing_container_over_ssh(cmd, host: MRSK.primary_host) }
    end

  when options[:interactive]
    say "Get most recent version available as an image...", :magenta unless options[:version]
    using_version(version_or_latest) do |version|
      say "Launching interactive command with version #{version} via SSH from new container on #{MRSK.primary_host}...", :magenta
      run_locally { exec MRSK.app.execute_in_new_container_over_ssh(cmd, host: MRSK.primary_host) }
    end

  when options[:reuse]
    say "Get current version of running container...", :magenta unless options[:version]
    using_version(options[:version] || current_running_version) do |version|
      say "Launching command with version #{version} from existing container...", :magenta

      on(MRSK.hosts) do |host|
        roles = MRSK.roles_on(host)

        roles.each do |role|
          execute *MRSK.auditor.record("Executed cmd '#{cmd}' on app version #{version}", role: role), verbosity: :debug
          puts_by_host host, capture_with_info(*MRSK.app(role: role).execute_in_existing_container(cmd))
        end
      end
    end

  else
    say "Get most recent version available as an image...", :magenta unless options[:version]
    using_version(version_or_latest) do |version|
      say "Launching command with version #{version} from new container...", :magenta
      on(MRSK.hosts) do |host|
        execute *MRSK.auditor.record("Executed cmd '#{cmd}' on app version #{version}"), verbosity: :debug
        puts_by_host host, capture_with_info(*MRSK.app.execute_in_new_container(cmd))
      end
    end
  end
end

#images ⇒ Object 



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# File 'lib/mrsk/cli/app.rb', line 161

def images
  on(MRSK.hosts) { |host| puts_by_host host, capture_with_info(*MRSK.app.list_images) }
end

#logs ⇒ Object 



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# File 'lib/mrsk/cli/app.rb', line 170

def logs
  # FIXME: Catch when app containers aren't running

  grep = options[:grep]

  if options[:follow]
    run_locally do
      info "Following logs on #{MRSK.primary_host}..."

      MRSK.specific_roles ||= ["web"]
      role = MRSK.roles_on(MRSK.primary_host).first

      info MRSK.app(role: role).follow_logs(host: MRSK.primary_host, grep: grep)
      exec MRSK.app(role: role).follow_logs(host: MRSK.primary_host, grep: grep)
    end
  else
    since = options[:since]
    lines = options[:lines].presence || ((since || grep) ? nil : 100) # Default to 100 lines if since or grep isn't set

    on(MRSK.hosts) do |host|
      roles = MRSK.roles_on(host)

      roles.each do |role|
        begin
          puts_by_host host, capture_with_info(*MRSK.app(role: role).logs(since: since, lines: lines, grep: grep))
        rescue SSHKit::Command::Failed
          puts_by_host host, "Nothing found"
        end
      end
    end
  end
end

#remove ⇒ Object 



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# File 'lib/mrsk/cli/app.rb', line 204

def remove
  mutating do
    stop
    remove_containers
    remove_images
  end
end

#remove_container(version) ⇒ Object 



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# File 'lib/mrsk/cli/app.rb', line 213

def remove_container(version)
  mutating do
    on(MRSK.hosts) do |host|
      roles = MRSK.roles_on(host)

      roles.each do |role|
        execute *MRSK.auditor.record("Removed app container with version #{version}", role: role), verbosity: :debug
        execute *MRSK.app(role: role).remove_container(version: version)
      end
    end
  end
end

#remove_containers ⇒ Object 



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# File 'lib/mrsk/cli/app.rb', line 227

def remove_containers
  mutating do
    on(MRSK.hosts) do |host|
      roles = MRSK.roles_on(host)

      roles.each do |role|
        execute *MRSK.auditor.record("Removed all app containers", role: role), verbosity: :debug
        execute *MRSK.app(role: role).remove_containers
      end
    end
  end
end

#remove_images ⇒ Object 



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# File 'lib/mrsk/cli/app.rb', line 241

def remove_images
  mutating do
    on(MRSK.hosts) do
      execute *MRSK.auditor.record("Removed all app images"), verbosity: :debug
      execute *MRSK.app.remove_images
    end
  end
end

#stale_containers ⇒ Object 



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# File 'lib/mrsk/cli/app.rb', line 137

def stale_containers
  mutating do
    stop = options[:stop]

    cli = self

    on(MRSK.hosts) do |host|
      roles = MRSK.roles_on(host)

      roles.each do |role|
        cli.send(:stale_versions, host: host, role: role).each do |version|
          if stop
            puts_by_host host, "Stopping stale container for role #{role} with version #{version}"
            execute *MRSK.app(role: role).stop(version: version), raise_on_non_zero_exit: false
          else
            puts_by_host host,  "Detected stale container for role #{role} with version #{version} (use `mrsk app stale_containers --stop` to stop)"
          end
        end
      end
    end
  end
end

#start ⇒ Object 



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# File 'lib/mrsk/cli/app.rb', line 45

def start
  mutating do
    on(MRSK.hosts) do |host|
      roles = MRSK.roles_on(host)

      roles.each do |role|
        execute *MRSK.auditor.record("Started app version #{MRSK.config.version}"), verbosity: :debug
        execute *MRSK.app(role: role).start, raise_on_non_zero_exit: false
      end
    end
  end
end

#stop ⇒ Object 



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# File 'lib/mrsk/cli/app.rb', line 59

def stop
  mutating do
    on(MRSK.hosts) do |host|
      roles = MRSK.roles_on(host)

      roles.each do |role|
        execute *MRSK.auditor.record("Stopped app", role: role), verbosity: :debug
        execute *MRSK.app(role: role).stop, raise_on_non_zero_exit: false
      end
    end
  end
end

#version ⇒ Object 



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# File 'lib/mrsk/cli/app.rb', line 251

def version
  on(MRSK.hosts) { |host| puts_by_host host, capture_with_info(*MRSK.app.current_running_version).strip }
end