add: cache (WIP)

src/models/relay.c

@@ -2,6 +2,7 @@
 #include <string.h>
 #include <sqlite3.h>
 
+#include <cache.h>
 #include <cJSON.h>
 #include <logger.h>
 #include <database.h>
@@ -161,7 +162,9 @@ relay_save(relay_t *relay)
         junction_relay_schedule_insert(i, relay->id, relay->schedules[i]->id);
     }
 
+    cache_invalidate_relay(relay->id);
     status_reload_entry(relay->id);
+
     return result;
 }
 
@@ -193,9 +196,15 @@ relay_free_list(relay_t **relays)
     free(relays);
 }
 
-cJSON*
+char*
 relay_to_json(relay_t *relay)
 {
+    char *cached = cache_get_json_relay(relay->id);
+    if(cached)
+    {
+        return cached;
+    }
+
     controller_t *controller = controller_get_by_id(relay->controller_id);
     if(!controller)
     {
@@ -255,12 +264,14 @@ relay_to_json(relay_t *relay)
     }
     cJSON_AddItemToObject(json, "is_on", json_is_on);
 
-    cJSON_AddItemToObject(json, "active_schedule", schedule_to_json(relay->active_schedule));
+    cJSON *json_active_schedule = cJSON_CreateRaw(schedule_to_json(relay->active_schedule));
+    cJSON_AddItemToObject(json, "active_schedule", json_active_schedule);
 
     cJSON *json_schedules = cJSON_CreateArray();
     for(int i = 0; i < 7; ++i)
     {
-        cJSON_AddItemToArray(json_schedules, schedule_to_json(relay->schedules[i]));
+        cJSON *json_schedule = cJSON_CreateRaw(schedule_to_json(relay->schedules[i]));
+        cJSON_AddItemToArray(json_schedules, json_schedule);
     }
     cJSON_AddItemToObject(json, "schedules", json_schedules);
 
@@ -290,20 +301,27 @@ relay_to_json(relay_t *relay)
     }
     cJSON_AddItemToObject(json, "tags", json_tags);
 
-    return json;
+    char *result = cJSON_Print(json);
+    cJSON_Delete(json);
+
+    cache_put_json_relay(relay->id, result);
+    return result;
 }
 
-cJSON*
+char*
 relay_list_to_json(relay_t **relays)
 {
     cJSON *json = cJSON_CreateArray();
 
     for(int i = 0; relays[i] != NULL; ++i)
     {
-        cJSON *json_relay = relay_to_json(relays[i]);
+        cJSON *json_relay = cJSON_CreateRaw(relay_to_json(relays[i]));
         cJSON_AddItemToArray(json, json_relay);
     }
-    return json;
+
+    char *result = cJSON_Print(json);
+    cJSON_Delete(json);
+    return result;
 }
 
 relay_t*