dispatcher

Documentation

Index

• type NatssDispatcher
  • func NewDispatcher(natssURL, clusterID, clientID string, logger *zap.Logger) (NatssDispatcher, error)
• type SubscriptionChannelMapping
• type SubscriptionsSupervisor
  • func (s *SubscriptionsSupervisor) Connect(stopCh <-chan struct{})
  • func (s *SubscriptionsSupervisor) ProcessChannels(ctx context.Context, chanList []messagingv1alpha1.Channel) error
  • func (s *SubscriptionsSupervisor) Start(stopCh <-chan struct{}) error
  • func (s *SubscriptionsSupervisor) UpdateSubscriptions(channel *messagingv1alpha1.Channel, isFinalizer bool) (map[eventingduck.SubscriberSpec]error, error)

Types

type NatssDispatcher

type NatssDispatcher interface {
	Start(stopCh <-chan struct{}) error
	UpdateSubscriptions(channel *messagingv1alpha1.Channel, isFinalizer bool) (map[eventingduck.SubscriberSpec]error, error)
	ProcessChannels(ctx context.Context, chanList []messagingv1alpha1.Channel) error
}

func NewDispatcher

func NewDispatcher(natssURL, clusterID, clientID string, logger *zap.Logger) (NatssDispatcher, error)

NewDispatcher returns a new NatssDispatcher.

type SubscriptionChannelMapping

type SubscriptionChannelMapping map[eventingchannels.ChannelReference]map[subscriptionReference]*stan.Subscription

type SubscriptionsSupervisor

type SubscriptionsSupervisor struct {
	// contains filtered or unexported fields
}

SubscriptionsSupervisor manages the state of NATS Streaming subscriptions

func (*SubscriptionsSupervisor) Connect

func (s *SubscriptionsSupervisor) Connect(stopCh <-chan struct{})

Connect is called for initial connection as well as after every disconnect

func (*SubscriptionsSupervisor) ProcessChannels

func (s *SubscriptionsSupervisor) ProcessChannels(ctx context.Context, chanList []messagingv1alpha1.Channel) error

ProcessChannels will be called from the controller that watches natss channels. It will update internal hostToChannelMap which is used to resolve the hostHeader of the incoming request to the correct ChannelReference in the receiver function.

func (*SubscriptionsSupervisor) Start

func (s *SubscriptionsSupervisor) Start(stopCh <-chan struct{}) error

func (*SubscriptionsSupervisor) UpdateSubscriptions

func (s *SubscriptionsSupervisor) UpdateSubscriptions(channel *messagingv1alpha1.Channel, isFinalizer bool) (map[eventingduck.SubscriberSpec]error, error)

UpdateSubscriptions creates/deletes the natss subscriptions based on channel.Spec.Subscribable.Subscribers Return type:map[eventingduck.SubscriberSpec]error --> Returns a map of subscriberSpec that failed with the value=error encountered. Ignore the value in case error != nil