Class: Indocker::ContainerDeployer

Inherits:
Object
  • Object
show all
Defined in:
lib/indocker/container_deployer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(configuration:, logger:) ⇒ ContainerDeployer

Returns a new instance of ContainerDeployer.



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# File 'lib/indocker/container_deployer.rb', line 4

def initialize(configuration:, logger:)
  @configuration = configuration
  @logger = logger

  @server_pool = Indocker::ServerPools::DeployServerPool.new(
    configuration: @configuration,
    logger: logger
  )

  @deployed_containers = Hash.new(false)
  @deployed_servers = {}

  @server_locks = {}
  @server_locks_mutex = Mutex.new
end

Instance Attribute Details

#server_pool ⇒ Object (readonly)

Returns the value of attribute server_pool.



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# File 'lib/indocker/container_deployer.rb', line 2

def server_pool
  @server_pool
end

Instance Method Details

#close_sessions ⇒ Object 



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# File 'lib/indocker/container_deployer.rb', line 51

def close_sessions
  @server_pool.close_sessions
rescue => e
  @logger.error("error during closing sessions #{e.inspect}")
end

#deploy(container, force_restart, skip_force_restart, progress) ⇒ Object 



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# File 'lib/indocker/container_deployer.rb', line 20

def deploy(container, force_restart, skip_force_restart, progress)
  return if @deployed_containers[container]

  # Deploy the container to all of its servers in parallel, each server in its
  # own thread with its own ssh connection.
  #
  # Per-server exclusion: only one container may deploy on a given server at a
  # time, so several container types don't spike CPU/memory by starting at once
  # on the same host. We grab the lock of every target server before deploying.
  # Locks are always taken in a consistent (sorted) order, so concurrent
  # deployments of containers with overlapping server sets can't deadlock.
  ordered_servers = container.servers.sort_by { |server| server_lock_key(server) }
  locks = ordered_servers.map { |server| server_lock(server) }.uniq

  with_locks(locks) do
    threads = container.servers.map do |server|
      Thread.new do
        deploy_to_server(container, server, force_restart, skip_force_restart, progress)
      end
    end

    results = threads.map(&:value)

    if results.any? { |exit_code| exit_code != 0 }
      exit 1
    end
  end

  @deployed_containers[container] = true
end