feat(core): manager fulfill del template tags requests

include/neuron/adapter.h

@@ -529,6 +529,15 @@ typedef struct {
     char **  tags;
 } neu_req_del_template_tag_t;
 
+static inline void
+neu_req_del_template_tag_fini(neu_req_del_template_tag_t *req)
+{
+    for (uint16_t i = 0; i < req->n_tag; ++i) {
+        free(req->tags[i]);
+    }
+    free(req->tags);
+}
+
 typedef struct neu_req_get_template_tag {
     char tmpl[NEU_TEMPLATE_NAME_LEN];
     char group[NEU_GROUP_NAME_LEN];

src/core/manager.c

@@ -415,6 +415,23 @@ static int manager_loop(enum neu_event_io_type type, int fd, void *usr_data)
         reply(manager, header, &resp);
         break;
     }
+    case NEU_REQ_DEL_TEMPLATE_TAG: {
+        neu_req_del_template_tag_t *cmd =
+            (neu_req_del_template_tag_t *) &header[1];
+        neu_resp_error_t resp = { 0 };
+
+        resp.error = neu_manager_del_template_tags(manager, cmd);
+        if (0 == resp.error) {
+            // TODO: storage
+        }
+
+        neu_req_del_template_tag_fini(cmd);
+
+        header->type = NEU_RESP_ERROR;
+        strcpy(header->receiver, header->sender);
+        reply(manager, header, &resp);
+        break;
+    }
     case NEU_REQ_ADD_NODE: {
         neu_req_add_node_t *cmd = (neu_req_add_node_t *) &header[1];
         int                 error =

src/core/manager_internal.c

@@ -291,6 +291,30 @@ int neu_manager_update_template_tags(neu_manager_t *                manager,
     return ret;
 }
 
+int neu_manager_del_template_tags(neu_manager_t *             manager,
+                                  neu_req_del_template_tag_t *req)
+{
+    neu_template_t *tmpl =
+        neu_template_manager_find(manager->template_manager, req->tmpl);
+    if (NULL == tmpl) {
+        return NEU_ERR_TEMPLATE_NOT_FOUND;
+    }
+
+    neu_group_t *grp = neu_template_get_group(tmpl, req->group);
+    if (NULL == grp) {
+        return NEU_ERR_GROUP_NOT_EXIST;
+    }
+
+    int i = 0;
+    for (; i < req->n_tag; ++i) {
+        // the only possible error is that the tag does not exist
+        // in which case we just ignore and continue
+        neu_group_del_tag(grp, req->tags[i]);
+    }
+
+    return 0;
+}
+
 UT_array *neu_manager_get_driver_group(neu_manager_t *manager)
 {
     UT_array *drivers =

src/core/manager_internal.h

@@ -71,6 +71,8 @@ int  neu_manager_add_template_tags(neu_manager_t *             manager,
 int  neu_manager_update_template_tags(neu_manager_t *             manager,
                                       neu_req_add_template_tag_t *req,
                                       uint16_t *                  index_p);
+int  neu_manager_del_template_tags(neu_manager_t *             manager,
+                                   neu_req_del_template_tag_t *req);
 
 UT_array *neu_manager_get_driver_group(neu_manager_t *manager);