initial commit

types/application.go

@@ -0,0 +1,31 @@
+package types
+
+type Application interface {
+
+	// Echo a message
+	Echo(message string) (RetCode, string)
+
+	// Append a tx, which may or may not get committed
+	AppendTx(tx []byte) RetCode
+
+	// Return the application Merkle root hash
+	GetHash() ([]byte, RetCode)
+
+	// Set commit checkpoint
+	Commit() RetCode
+
+	// Rollback to the latest commit
+	Rollback() RetCode
+
+	// Set events reporting mode
+	SetEventsMode(mode EventsMode) RetCode
+
+	// Add event listener
+	AddListener(key string) RetCode
+
+	// Remove event listener
+	RemListener(key string) RetCode
+
+	// Get all events
+	GetEvents() []Event
+}