Class: EcsDeploy::Service

Inherits:
Object
  • Object
show all
Defined in:
lib/ecs_deploy/service.rb

Defined Under Namespace

Classes: TooManyAttemptsError

Constant Summary collapse

CHECK_INTERVAL = 
5
MAX_DESCRIBE_SERVICES = 
10

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(cluster:, service_name:, task_definition_name: nil, revision: nil, load_balancers: nil, desired_count: nil, deployment_configuration: {maximum_percent: 200, minimum_healthy_percent: 100}, launch_type: nil, placement_constraints: [], placement_strategy: [], network_configuration: nil, health_check_grace_period_seconds: nil, scheduling_strategy: 'REPLICA', enable_ecs_managed_tags: nil, tags: nil, propagate_tags: nil, region: nil, delete: false, enable_execute_command: false) ⇒ Service

Returns a new instance of Service.



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# File 'lib/ecs_deploy/service.rb', line 12

def initialize(
  cluster:, service_name:, task_definition_name: nil, revision: nil,
  load_balancers: nil,
  desired_count: nil, deployment_configuration: {maximum_percent: 200, minimum_healthy_percent: 100},
  launch_type: nil,
  placement_constraints: [],
  placement_strategy: [],
  network_configuration: nil,
  health_check_grace_period_seconds: nil,
  scheduling_strategy: 'REPLICA',
  enable_ecs_managed_tags: nil,
  tags: nil,
  propagate_tags: nil,
  region: nil,
  delete: false,
  enable_execute_command: false
)
  @cluster = cluster
  @service_name = service_name
  @task_definition_name = task_definition_name || service_name
  @load_balancers = load_balancers
  @desired_count = desired_count
  @deployment_configuration = deployment_configuration
  @launch_type = launch_type
  @placement_constraints = placement_constraints
  @placement_strategy = placement_strategy
  @network_configuration = network_configuration
  @health_check_grace_period_seconds = health_check_grace_period_seconds
  @scheduling_strategy = scheduling_strategy
  @revision = revision
  @enable_ecs_managed_tags = enable_ecs_managed_tags
  @tags = tags
  @propagate_tags = propagate_tags
  @enable_execute_command = enable_execute_command

  @response = nil

  region ||= EcsDeploy.config.default_region
  @client = region ? Aws::ECS::Client.new(region: region) : Aws::ECS::Client.new
  @region = @client.config.region

  @delete = delete
end

Instance Attribute Details

#cluster ⇒ Object (readonly)

Returns the value of attribute cluster.



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# File 'lib/ecs_deploy/service.rb', line 10

def cluster
  @cluster
end

#delete ⇒ Object (readonly)

Returns the value of attribute delete.



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# File 'lib/ecs_deploy/service.rb', line 10

def delete
  @delete
end

#region ⇒ Object (readonly)

Returns the value of attribute region.



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# File 'lib/ecs_deploy/service.rb', line 10

def region
  @region
end

#service_name ⇒ Object (readonly)

Returns the value of attribute service_name.



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# File 'lib/ecs_deploy/service.rb', line 10

def service_name
  @service_name
end

Class Method Details

.wait_all_running(services) ⇒ Object 



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# File 'lib/ecs_deploy/service.rb', line 145

def self.wait_all_running(services)
  services.group_by { |s| [s.cluster, s.region] }.flat_map do |(cl, region), ss|
    client = Aws::ECS::Client.new(region: region)
    ss.reject(&:delete).map(&:service_name).each_slice(MAX_DESCRIBE_SERVICES).map do |chunked_service_names|
      Thread.new do
        EcsDeploy.config.ecs_wait_until_services_stable_max_attempts.times do
          EcsDeploy.logger.info "wait service stable [#{chunked_service_names.join(", ")}]"
          resp = client.describe_services(cluster: cl, services: chunked_service_names)
          resp.services.each do |s|
            # cf. https://github.com/aws/aws-sdk-ruby/blob/master/gems/aws-sdk-ecs/lib/aws-sdk-ecs/waiters.rb#L91-L96
            if s.deployments.size == 1 && s.running_count == s.desired_count
              chunked_service_names.delete(s.service_name)
            end
          end
          break if chunked_service_names.empty?
          sleep EcsDeploy.config.ecs_wait_until_services_stable_delay
        end
        raise TooManyAttemptsError unless chunked_service_names.empty?
      end
    end
  end.each(&:join)
end

Instance Method Details

#current_task_definition_arn ⇒ Object 



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# File 'lib/ecs_deploy/service.rb', line 56

def current_task_definition_arn
  res = @client.describe_services(cluster: @cluster, services: [@service_name])
  res.services[0].task_definition
end

#delete_service ⇒ Object 



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# File 'lib/ecs_deploy/service.rb', line 114

def delete_service
  if @scheduling_strategy != 'DAEMON'
    @client.update_service(cluster: @cluster, service: @service_name, desired_count: 0)
    sleep 1
  end
  @client.delete_service(cluster: @cluster, service: @service_name)
  EcsDeploy.logger.info "delete service [#{@service_name}] [#{@region}] [#{Paint['OK', :green]}]"
end

#deploy ⇒ Object 



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# File 'lib/ecs_deploy/service.rb', line 61

def deploy
  res = @client.describe_services(cluster: @cluster, services: [@service_name])
  service_options = {
    cluster: @cluster,
    task_definition: task_definition_name_with_revision,
    deployment_configuration: @deployment_configuration,
    network_configuration: @network_configuration,
    health_check_grace_period_seconds: @health_check_grace_period_seconds,
    enable_execute_command: @enable_execute_command,
  }
  if res.services.select{ |s| s.status == 'ACTIVE' }.empty?
    return if @delete

    service_options.merge!({
      service_name: @service_name,
      desired_count: @desired_count.to_i,
      launch_type: @launch_type,
      placement_constraints: @placement_constraints,
      placement_strategy: @placement_strategy,
      enable_ecs_managed_tags: @enable_ecs_managed_tags,
      tags: @tags,
      propagate_tags: @propagate_tags,
    })

    if @load_balancers && EcsDeploy.config.ecs_service_role
      service_options.merge!({
        role: EcsDeploy.config.ecs_service_role,
      })
    end

    if @load_balancers
      service_options.merge!({
        load_balancers: @load_balancers,
      })
    end

    if @scheduling_strategy == 'DAEMON'
      service_options[:scheduling_strategy] = @scheduling_strategy
      service_options.delete(:desired_count)
    end
    @response = @client.create_service(service_options)
    EcsDeploy.logger.info "create service [#{@service_name}] [#{@region}] [#{Paint['OK', :green]}]"
  else
    return delete_service if @delete

    service_options.merge!({service: @service_name})
    service_options.merge!({desired_count: @desired_count}) if @desired_count
    update_tags(@service_name, @tags)
    @response = @client.update_service(service_options)
    EcsDeploy.logger.info "update service [#{@service_name}] [#{@region}] [#{Paint['OK', :green]}]"
  end
end

#update_tags(service_name, tags) ⇒ Object 



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# File 'lib/ecs_deploy/service.rb', line 123

def update_tags(service_name, tags)
  service_arn = @client.describe_services(cluster: @cluster, services: [service_name]).services.first.service_arn
  if service_arn.split('/').size == 2
    if tags
      EcsDeploy.logger.warn "#{service_name} doesn't support tagging operations, so tags are ignored. Long arn format must be used for tagging operations."
    end
    return
  end

  tags ||= []
  current_tag_keys = @client.list_tags_for_resource(resource_arn: service_arn).tags.map(&:key)
  deleted_tag_keys = current_tag_keys - tags.map { |t| t[:key] }

  unless deleted_tag_keys.empty?
    @client.untag_resource(resource_arn: service_arn, tag_keys: deleted_tag_keys)
  end

  unless tags.empty?
    @client.tag_resource(resource_arn: service_arn, tags: tags)
  end
end