Class: SimplyGenius::Atmos::Providers::Aws::ContainerManager

Inherits:
Object
  • Object
show all
Includes:
GemLogger::LoggerSupport
Defined in:
lib/simplygenius/atmos/providers/aws/container_manager.rb

Instance Method Summary collapse

Constructor Details

#initialize(provider) ⇒ ContainerManager

Returns a new instance of ContainerManager.



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# File 'lib/simplygenius/atmos/providers/aws/container_manager.rb', line 15

def initialize(provider)
  @provider = provider
end

Instance Method Details

#deploy(cluster, name, remote_image) ⇒ Object 



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# File 'lib/simplygenius/atmos/providers/aws/container_manager.rb', line 80

def deploy(cluster, name, remote_image)
   result = deploy_task(name, remote_image)
   new_taskdef = result[:task_definition]

   # Only trigger restart if name is a service
   ecs = ::Aws::ECS::Client.new
   resp = ecs.describe_services(cluster: cluster, services: [name])

   if resp.services.size > 0
     logger.info "Updating service with new task definition: #{new_taskdef}"

     resp = ecs.update_service(cluster: cluster, service: name, task_definition: new_taskdef)

     logger.info "Updated service=#{name} on cluster=#{cluster} to #{new_taskdef} with image #{remote_image}"
   else
     logger.info "#{name} is not a service"
   end

   return result
end

#deploy_task(name, remote_image) ⇒ Object 



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# File 'lib/simplygenius/atmos/providers/aws/container_manager.rb', line 51

def deploy_task(name, remote_image)
  result = {}

  ecs = ::Aws::ECS::Client.new
  resp = nil

  resp = ecs.list_task_definitions(family_prefix: name, sort: 'DESC')
  latest_defn_arn = resp.task_definition_arns.first

  logger.info "Current task definition for #{name}: #{latest_defn_arn}"

  resp = ecs.describe_task_definition(task_definition: latest_defn_arn)
  latest_defn = resp.task_definition

  new_defn = latest_defn.to_h
  [:revision, :status, :task_definition_arn,
   :requires_attributes, :compatibilities].each do |attr|
    new_defn.delete(attr)
  end
  new_defn[:container_definitions].each {|c| c[:image] = remote_image}

  resp = ecs.register_task_definition(**new_defn)
  result[:task_definition] = resp.task_definition.task_definition_arn

  logger.info "Updated task=#{name} to #{result[:task_definition]} with image #{remote_image}"

  return result
end

#list_image_tags(cluster, name) ⇒ Object 



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# File 'lib/simplygenius/atmos/providers/aws/container_manager.rb', line 123

def list_image_tags(cluster, name)
  result = {tags: [], latest: nil, current: nil}
  latest_digest = nil

  ecs = ::Aws::ECS::Client.new
  ecr = ::Aws::ECR::Client.new

  resp = ecs.describe_services(services: [name], cluster: cluster)
  if resp.services.size == 1
    task_def = resp.services.first.task_definition
    resp = ecs.describe_task_definition(task_definition: task_def)
    image = resp.task_definition.container_definitions.first.image
    result[:current] = image.sub(/^.*:/, '')
  else
    raise "No services found for '#{name}' in cluster '#{cluster}'"
  end

  # TODO: handle pagination?
  resp = ecr.list_images(repository_name: name, filter: {tag_status: "TAGGED"}, max_results: 1000)
  if resp.image_ids.size > 0

    images = resp.image_ids

    images.each do |i|
      if i.image_tag == 'latest'
        latest_digest = i.image_digest
      end

      result[:tags] << i.image_tag
    end

    if latest_digest
      images.each do |i|
        if i.image_digest == latest_digest && i.image_tag != 'latest'
          result[:latest] = i.image_tag
          break
        end
      end
      # Handle if latest tag isn't some other tag
      result[:latest] = 'latest' if result[:latest].nil?
    end

    result[:tags].sort!
  else
    raise "No images found for '#{name}'"
  end

  return result
end

#push(ecs_name, local_image, ecr_repo: ecs_name, revision: nil) ⇒ Object 



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# File 'lib/simplygenius/atmos/providers/aws/container_manager.rb', line 19

def push(ecs_name, local_image,
         ecr_repo: ecs_name, revision: nil)

  revision = Time.now.strftime('%Y%m%d%H%M%S') unless revision.present?
  result = {}

  ecr = ::Aws::ECR::Client.new
  resp = nil

  resp = ecr.get_authorization_token
  auth_data = resp.authorization_data.first
  token = auth_data.authorization_token
  endpoint = auth_data.proxy_endpoint
  user, password = Base64.decode64(token).split(':')

  # docker login into the ECR repo for the current account so that we can pull/push to it
  run("docker", "login", "-u", user, "-p", password, endpoint)#, stdin_data: token)

  image="#{ecs_name}:latest"
  ecs_image="#{endpoint.sub(/https?:\/\//, '')}/#{ecr_repo}"

  tags = ['latest', revision]
  logger.info "Tagging local image '#{local_image}' with #{tags}"
  tags.each {|t| run("docker", "tag", local_image, "#{ecs_image}:#{t}") }

  logger.info "Pushing tagged image to ECR repo #{ecs_image}"
  tags.each {|t| run("docker", "push", "#{ecs_image}:#{t}") }

  result[:remote_image] = "#{ecs_image}:#{revision}"
  return result
end

#remote_image(name, tag) ⇒ Object 



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# File 'lib/simplygenius/atmos/providers/aws/container_manager.rb', line 111

def remote_image(name, tag)
  ecr = ::Aws::ECR::Client.new

  resp = ecr.get_authorization_token
  endpoint = resp.authorization_data.first.proxy_endpoint

  ecs_image="#{endpoint.sub(/https?:\/\//, '')}/#{name}"
  tagged_image = "#{ecs_image}:#{tag}"

  return tagged_image
end

#run_task(cluster, name, command:, waiter_log_pattern: nil, launch_type: "FARGATE") ⇒ Object 



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# File 'lib/simplygenius/atmos/providers/aws/container_manager.rb', line 173

def run_task(cluster, name, command:, waiter_log_pattern: nil, launch_type: "FARGATE")
  result = {}

  ecs = ::Aws::ECS::Client.new
  resp = nil

  task_opts = {
      count: 1,
      cluster: cluster,
      task_definition: name,
      launch_type: launch_type,
      overrides: {container_overrides: [{name: name, command: command}]}
  }

  defn_arn = nil
  resp = ecs.describe_services(cluster: cluster, services: [name])
  if resp.services.size > 0
    svc = resp.services.first
    task_opts[:launch_type] = svc.launch_type
    task_opts[:network_configuration] = svc.network_configuration.to_h
    defn_arn = svc.task_definition
    logger.info "Running service task as '#{task_opts[:launch_type]}'"
  else
    resp = ecs.list_task_definitions(family_prefix: name, sort: 'DESC')
    defn_arn = resp.task_definition_arns.first
    logger.info "Running task as '#{task_opts[:launch_type]}'"
  end

  resp = ecs.describe_task_definition(task_definition: defn_arn)
  defn = resp.task_definition
  raise "Invalid Launch type '#{launch_type}'" unless (defn.requires_compatibilities + defn.compatibilities).include?(launch_type)

  log_config = defn.container_definitions.first.log_configuration
  log_group = nil
  log_stream_prefix = nil
  if log_config && log_config.log_driver == "awslogs"
    log_group = log_config.options["awslogs-group"]
    log_stream_prefix = log_config.options["awslogs-stream-prefix"]
  end
  if waiter_log_pattern && log_group.nil?
    logger.error "Cannot wait on a log unless task definition uses cloudwatch for logging"
    waiter_log_pattern = nil
  end

  resp = ecs.run_task(**task_opts)
  task_arn = result[:task_arn] = resp.tasks.first.task_arn
  task_id = result[:task_id] = task_arn.split('/').last

  logger.info "Waiting for task to start"
  ecs.wait_until(:tasks_running, cluster: cluster, tasks: [task_id])

  if waiter_log_pattern
    cwl = ::Aws::CloudWatchLogs::Client.new

    waiter_regexp = Regexp.new(waiter_log_pattern)
    log_stream = "#{log_stream_prefix}/#{name}/#{task_id}"
    logger.info "Task started, looking for log pattern in group=#{log_group} stream=#{log_stream}"
    log_token = nil
    10.times do
      resp = cwl.get_log_events(log_group_name: log_group, log_stream_name: log_stream, start_from_head: true, next_token: log_token)
      resp.events.each do |e|
        logger.debug("Task log #{e.timestamp}: #{e.message}")
        if e.message =~ waiter_regexp
          result[:log_match] = Regexp.last_match
          return result # return, not break due to doubly nested iterator
        end
      end
      log_token = resp.next_forward_token
      sleep 1
    end
  end

  return result
end

#stop_task(cluster, task) ⇒ Object 



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# File 'lib/simplygenius/atmos/providers/aws/container_manager.rb', line 248

def stop_task(cluster, task)
  ecs = ::Aws::ECS::Client.new
  resp = ecs.stop_task(cluster: cluster, task: task)
end

#wait(cluster, service_name_or_task_arn) ⇒ Object 



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# File 'lib/simplygenius/atmos/providers/aws/container_manager.rb', line 101

def wait(cluster, service_name_or_task_arn)
  ecs = ::Aws::ECS::Client.new
  logger.info "Waiting for #{cluster}:#{service_name_or_task_arn} to stabilize"
  if service_name_or_task_arn =~ /arn:aws:ecs:.*:task\/.*/
    ecs.wait_until(:tasks_running, cluster: cluster, tasks: [service_name_or_task_arn])
  else
    ecs.wait_until(:services_stable, cluster: cluster, services: [service_name_or_task_arn])
  end
end