规则引擎

pkg/rule_engine/message/message.go

@@ -0,0 +1,55 @@
+package message
+
+// Message ...
+type Message interface {
+	GetOriginator() string
+	GetType() string
+	GetPayload() []byte
+	SetType(string)
+	SetPayload([]byte)
+	SetOriginator(string)
+	MarshalBinary() ([]byte, error)
+	UnmarshalBinary(b []byte) error
+}
+
+// Predefined message types
+const (
+	MessageTypePostAttributesRequest = "Post attributes"
+	MessageTypePostTelemetryRequest  = "Post telemetry"
+	MessageTypeActivityEvent         = "Activity event"
+	MessageTypeInactivityEvent       = "Inactivity event"
+	MessageTypeConnectEvent          = "Connect event"
+	MessageTypeDisconnectEvent       = "Disconnect event"
+)
+
+// NewMessage ...
+func NewMessage() Message {
+	return &defaultMessage{
+		payload: []byte{},
+	}
+}
+
+type defaultMessage struct {
+	originator  string //数据发布者
+	messageType string //数据类型，数据来源
+	payload     []byte //二进制数据
+}
+
+// NewMessageWithDetail ...
+func NewMessageWithDetail(originator string, messageType string, payload []byte) Message {
+	return &defaultMessage{
+		originator:  originator,
+		messageType: messageType,
+		payload:     payload,
+	}
+}
+
+func (t *defaultMessage) GetOriginator() string           { return t.originator }
+func (t *defaultMessage) GetType() string                 { return t.messageType }
+func (t *defaultMessage) GetPayload() []byte              { return t.payload }
+func (t *defaultMessage) SetType(messageType string)      { t.messageType = messageType }
+func (t *defaultMessage) SetPayload(payload []byte)       { t.payload = payload }
+func (t *defaultMessage) SetOriginator(originator string) { t.originator = originator }
+
+func (t *defaultMessage) MarshalBinary() ([]byte, error) { return nil, nil }
+func (t *defaultMessage) UnmarshalBinary(b []byte) error { return nil }