func NewBackendServiceDescriber()

in internal/pkg/describe/backend_service.go [49:115]
67 lines of code
10 McCabe index (conditional complexity)

func NewBackendServiceDescriber(opt NewServiceConfig) (*BackendServiceDescriber, error) {
	describer := &BackendServiceDescriber{
		app:                  opt.App,
		svc:                  opt.Svc,
		enableResources:      opt.EnableResources,
		store:                opt.DeployStore,
		ecsServiceDescribers: make(map[string]ecsDescriber),
		envStackDescriber:    make(map[string]envDescriber),
	}
	describer.initLBDescriber = func(envName string) (lbDescriber, error) {
		env, err := opt.ConfigStore.GetEnvironment(opt.App, envName)
		if err != nil {
			return nil, fmt.Errorf("get environment %s: %w", envName, err)
		}
		sess, err := sessions.ImmutableProvider().FromRole(env.ManagerRoleARN, env.Region)
		if err != nil {
			return nil, err
		}
		return elbv2.New(sess), nil
	}
	describer.initECSServiceDescribers = func(env string) (ecsDescriber, error) {
		if describer, ok := describer.ecsServiceDescribers[env]; ok {
			return describer, nil
		}
		svcDescr, err := newECSServiceDescriber(NewServiceConfig{
			App:         opt.App,
			Env:         env,
			Svc:         opt.Svc,
			ConfigStore: opt.ConfigStore,
		})
		if err != nil {
			return nil, err
		}
		describer.ecsServiceDescribers[env] = svcDescr
		return svcDescr, nil
	}
	describer.initCWDescriber = func(envName string) (cwAlarmDescriber, error) {
		if describer, ok := describer.cwAlarmDescribers[envName]; ok {
			return describer, nil
		}
		env, err := opt.ConfigStore.GetEnvironment(opt.App, envName)
		if err != nil {
			return nil, fmt.Errorf("get environment %s: %w", envName, err)
		}
		sess, err := sessions.ImmutableProvider().FromRole(env.ManagerRoleARN, env.Region)
		if err != nil {
			return nil, err
		}
		return cloudwatch.New(sess), nil
	}
	describer.initEnvDescribers = func(env string) (envDescriber, error) {
		if describer, ok := describer.envStackDescriber[env]; ok {
			return describer, nil
		}
		envDescr, err := NewEnvDescriber(NewEnvDescriberConfig{
			App:         opt.App,
			Env:         env,
			ConfigStore: opt.ConfigStore,
		})
		if err != nil {
			return nil, err
		}
		describer.envStackDescriber[env] = envDescr
		return envDescr, nil
	}
	return describer, nil
}