🦄 refactor(stellar api): split exdata and mq

include/stellar/mq.h

@@ -0,0 +1,52 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+struct mq_schema;
+struct mq_schema *mq_schema_new();
+void mq_schema_free(struct mq_schema *s);
+
+struct mq_runtime;
+struct mq_runtime *mq_runtime_new(struct mq_schema *s);
+void mq_runtime_free(struct mq_runtime *s);
+
+typedef void mq_msg_free_cb_func(void *msg, void *msg_free_arg);
+typedef void on_msg_cb_func(int topic_id, const void *msg, void *on_msg_arg);
+typedef void on_msg_dispatch_cb_func(int topic_id, 
+									 const void *msg, 
+									 on_msg_cb_func* on_msg_cb, 
+									 void *on_msg_cb_arg, 
+									 void *dispatch_arg);
+
+//return topic_id
+int mq_schema_create_topic(struct mq_schema *s, 
+						   const char *topic_name, 
+						   on_msg_dispatch_cb_func *on_dispatch_cb, 
+						   void *on_dispatch_arg, 
+						   mq_msg_free_cb_func *msg_free_cb, 
+						   void *msg_free_arg);
+
+int mq_schema_get_topic_id(struct mq_schema *s, const char *topic_name);
+
+int mq_schema_update_topic(struct mq_schema *s, 
+						   int topic_id, 
+						   on_msg_dispatch_cb_func *on_dispatch_cb, 
+						   void *on_dispatch_arg, 
+						   mq_msg_free_cb_func *msg_free_cb, 
+						   void *msg_free_arg);
+
+int mq_schema_destroy_topic(struct mq_schema *s, int topic_id);
+
+//return 0 if success, otherwise return -1.
+int mq_schema_subscribe(struct mq_schema *s, int topic_id, on_msg_cb_func *on_msg_cb, void * on_msg_cb_arg); 
+
+
+int mq_runtime_publish_message(struct mq_runtime *rt, int topic_id, void *msg);
+void mq_runtime_dispatch(struct mq_runtime *rt);
+
+#ifdef __cplusplus
+}
+#endif