- Update all main abstractions

- Desighn a new interfaces responsible for the whole PubSub
- New plugin - websockets

Signed-off-by: Valery Piashchynski <[email protected]>

1 files changed, 38 insertions, 0 deletions

diff --git a/pkg/pubsub/interface.go b/pkg/pubsub/interface.go
new file mode 100644
index 00000000..80dab0c3
--- /dev/null
+++ b/pkg/pubsub/interface.go
@@ -0,0 +1,38 @@
+package pubsub
+
+// PubSub ...
+type PubSub interface {
+	Publisher
+	Subscriber
+	Reader
+}
+
+// Subscriber defines the ability to operate as message passing broker.
+type Subscriber interface {
+	// Subscribe broker to one or multiple topics.
+	Subscribe(topics ...string) error
+	// Unsubscribe from one or multiply topics
+	Unsubscribe(topics ...string) error
+}
+
+// Publisher publish one or more messages
+type Publisher interface {
+	// Publish one or multiple Channel.
+	Publish(messages []Message) error
+
+	// PublishAsync publish message and return immediately
+	// If error occurred it will be printed into the logger
+	PublishAsync(messages []Message)
+}
+
+// Reader interface should return next message
+type Reader interface {
+	Next() (Message, error)
+}
+
+type Message interface {
+	Command() string
+	Payload() []byte
+	Topics() []string
+	Broker() string
+}