Class: Shipitron::Server::UpdateEcsServices

Inherits:
Object
  • Object
show all
Includes:
Metaractor, EcsClient
Defined in:
lib/shipitron/server/update_ecs_services.rb

Instance Method Summary collapse

Methods included from EcsClient

#ecs_client, #generate_ecs_client

Instance Method Details

#call ⇒ Object 



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# File 'lib/shipitron/server/update_ecs_services.rb', line 22

def call
  if ecs_services.empty?
    Logger.info 'No ECS services to update.'
    return
  end

  Logger.info "Updating ECS services [#{ecs_services.join(', ')}] with task definitions [#{ecs_task_defs.map(&:to_s).join(', ')}]"

  begin
    service_templates = ParseTemplates.call!(
      templates: ecs_service_templates,
      template_context: {
        cluster: cluster_name,
        revision: nil,
        count: nil
      }
    ).parsed_templates

    service_task_defs = {}

    # Find all requested services
    services_response = ecs_client(region: region).describe_services(
      cluster: cluster_name,
      services: ecs_services
    )

    # For each service, find the task definition it references
    services_response.services.each do |service|
      response = ecs_client(region: region).describe_task_definition(
        task_definition: service.task_definition
      )

      # For the task definition, find the locally updated version in ecs_task_defs
      ecs_task_def = ecs_task_defs.find {|task| task.name == response.task_definition.family }
      service_task_defs[service.service_name] = ecs_task_def
    end

    service_task_defs.each do |ecs_service, ecs_task_def|
      Logger.info "Updating #{ecs_service} with #{ecs_task_def}"

      service_params = {
        cluster: cluster_name,
        service: ecs_service,
        task_definition: ecs_task_def.name_with_revision
      }

      template = service_templates.find {|t| t.service_name == ecs_service }
      if template != nil
        if template.deployment_configuration != nil
          Logger.debug "Merging deployment config: #{template.deployment_configuration}"
          service_params.merge(
            deployment_configuration: template.deployment_configuration
          )
        end
      end

      ecs_client(region: region).update_service(service_params)
    end

  rescue Aws::ECS::Errors::ServiceError => e
    fail_with_errors!(messages: [
      "Error: #{e.message}",
      e.backtrace.join("\n")
    ])
  end
end