Class: Pcrd::CLI

Inherits:
Thor
  • Object
show all
Defined in:
lib/pcrd/cli.rb

Constant Summary collapse

PASTEL = 
Pastel.new

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.exit_on_failure? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pcrd/cli.rb', line 10

def self.exit_on_failure?
  true
end

Instance Method Details

#analyze ⇒ Object 



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# File 'lib/pcrd/cli.rb', line 39

def analyze
  config = load_config!
  Commands::Analyze.new(config, options).run
rescue Commands::Analyze::Error => e
  raise Thor::Error, "ERROR: #{e.message}"
rescue Connection::Error => e
  raise Thor::Error, "Connection failed: #{e.message}"
end

#cleanup ⇒ Object 



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# File 'lib/pcrd/cli.rb', line 239

def cleanup
  config = load_config!
  Commands::Cleanup.new(config, options).run
rescue Connection::Error => e
  raise Thor::Error, "Connection failed: #{e.message}"
rescue Pcrd::Error => e
  raise Thor::Error, "ERROR: #{e.message}"
end

#cutover ⇒ Object 



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# File 'lib/pcrd/cli.rb', line 166

def cutover
  config = load_config!

  unless options[:"maintenance-confirmed"]
    say "\nThe application must be in maintenance mode before continuing."
    say "Maintenance mode options:"
    say "  pgBouncer:  PAUSE <database>"
    say "  Kubernetes: kubectl scale --replicas=0 deployment/app"
    say "  Rails:      enable maintenance middleware"
    say ""
    answer = ask("Is the application in maintenance mode? [y/N]")
    return unless answer.strip.downcase == "y"
  end

  source_pool = Connection::Client.new(config.source)
  target_pool = Connection::Client.new(config.target)
  printer     = Output::CutoverPrinter.new

  say "\nRunning cutover sequence..."
  orchestrator = Cutover::Orchestrator.new(
    source_pool: source_pool,
    target_pool: target_pool,
    config:      config
  )

  result = orchestrator.run(on_progress: ->(msg) { say "  #{msg}" })

  printer.print(result)

  source_pool.close
  target_pool.close

  exit(result.passed ? 0 : 1)
rescue Connection::Error => e
  raise Thor::Error, "Connection failed: #{e.message}"
end

#migrate ⇒ Object 



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# File 'lib/pcrd/cli.rb', line 73

def migrate
  config         = load_config!
  preflight_only = options[:"preflight-only"] || options[:"dry-run"]

  unless preflight_only
    raise Thor::Error,
          "ERROR: migrate requires a 'target' section in your config.\n\n" \
          "Use --preflight-only to validate without a target connection." if config.target.nil?

    raise Thor::Error,
          "ERROR: migrate requires a 'migrate' section in your config." if config.migrate.nil?
  end

  result = Preflight.new(config, options).run
  Output::PreflightPrinter.new.print(result)

  if preflight_only
    exit(result.passed ? 0 : 1)
    return
  end

  unless result.passed
    raise Thor::Error, "Preflight failed. Fix the issue(s) above before running migrate."
  end

  unless options[:yes]
    answer = ask("Proceed with migration? [y/N]")
    return unless answer.strip.downcase == "y"
  end

  orchestrator = Migration::Orchestrator.new(config: config, options: options)
  trap("INT")  { orchestrator.request_stop }
  trap("TERM") { orchestrator.request_stop }
  orchestrator.run
rescue Replication::Error => e
  raise Thor::Error, "ERROR: #{e.message}\n\nReplication stopped. Resume with --resume once the cause is resolved."
rescue Connection::Error => e
  raise Thor::Error, "Connection failed: #{e.message}"
rescue Pcrd::Error => e
  raise Thor::Error, "ERROR: #{e.message}"
end

#readiness ⇒ Object 



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# File 'lib/pcrd/cli.rb', line 143

def readiness
  config = load_config!
  result = Commands::Readiness.new(config, options).run
  Output::ReadinessPrinter.new.print(result)
rescue Connection::Error => e
  raise Thor::Error, "Connection failed: #{e.message}"
rescue Pcrd::Error => e
  raise Thor::Error, "ERROR: #{e.message}"
end

#status ⇒ Object 



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# File 'lib/pcrd/cli.rb', line 121

def status
  config = load_config!
  Commands::Status.new(config, options).run
rescue Config::LoadError => e
  raise Thor::Error, "ERROR: #{e.message}"
end

#verify ⇒ Object 



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# File 'lib/pcrd/cli.rb', line 214

def verify
  config  = load_config!
  result  = Commands::Verify.new(config, options).run
  Output::CutoverPrinter.new.print_verify(result)
  exit(result.passed ? 0 : 1)
rescue Connection::Error => e
  raise Thor::Error, "Connection failed: #{e.message}"
rescue Pcrd::Error => e
  raise Thor::Error, "ERROR: #{e.message}"
end

#version ⇒ Object 



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# File 'lib/pcrd/cli.rb', line 19

def version
  say "pcrd #{Pcrd::VERSION}"
end