1 files changed, 94 insertions, 0 deletions
diff --git a/src/database/storage_engine.c b/src/database/storage_engine.c
new file mode 100644
index 000000000..88a35b2e4
--- /dev/null
+++ b/src/database/storage_engine.c
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "storage_engine.h"
+#include "ram/rrddim_mem.h"
+#ifdef ENABLE_DBENGINE
+#include "engine/rrdengineapi.h"
+#endif
+
+static STORAGE_ENGINE engines[] = {
+    {
+        .id = RRD_MEMORY_MODE_NONE,
+        .name = RRD_MEMORY_MODE_NONE_NAME,
+        .seb = STORAGE_ENGINE_BACKEND_RRDDIM,
+        .api = {
+            .metric_get = rrddim_metric_get,
+            .metric_get_or_create = rrddim_metric_get_or_create,
+            .metric_dup = rrddim_metric_dup,
+            .metric_release = rrddim_metric_release,
+            .metric_retention_by_uuid = rrddim_metric_retention_by_uuid,
+        }
+    },
+    {
+        .id = RRD_MEMORY_MODE_RAM,
+        .name = RRD_MEMORY_MODE_RAM_NAME,
+        .seb = STORAGE_ENGINE_BACKEND_RRDDIM,
+        .api = {
+            .metric_get = rrddim_metric_get,
+            .metric_get_or_create = rrddim_metric_get_or_create,
+            .metric_dup = rrddim_metric_dup,
+            .metric_release = rrddim_metric_release,
+            .metric_retention_by_uuid = rrddim_metric_retention_by_uuid,
+        }
+    },
+    {
+        .id = RRD_MEMORY_MODE_ALLOC,
+        .name = RRD_MEMORY_MODE_ALLOC_NAME,
+        .seb = STORAGE_ENGINE_BACKEND_RRDDIM,
+        .api = {
+            .metric_get = rrddim_metric_get,
+            .metric_get_or_create = rrddim_metric_get_or_create,
+            .metric_dup = rrddim_metric_dup,
+            .metric_release = rrddim_metric_release,
+            .metric_retention_by_uuid = rrddim_metric_retention_by_uuid,
+        }
+    },
+#ifdef ENABLE_DBENGINE
+    {
+        .id = RRD_MEMORY_MODE_DBENGINE,
+        .name = RRD_MEMORY_MODE_DBENGINE_NAME,
+        .seb = STORAGE_ENGINE_BACKEND_DBENGINE,
+        .api = {
+            .metric_get = rrdeng_metric_get,
+            .metric_get_or_create = rrdeng_metric_get_or_create,
+            .metric_dup = rrdeng_metric_dup,
+            .metric_release = rrdeng_metric_release,
+            .metric_retention_by_uuid = rrdeng_metric_retention_by_uuid,
+        }
+    },
+#endif
+    { .id = RRD_MEMORY_MODE_NONE, .name = NULL }
+};
+
+STORAGE_ENGINE* storage_engine_find(const char* name)
+{
+    for (STORAGE_ENGINE* it = engines; it->name; it++) {
+        if (strcmp(it->name, name) == 0)
+            return it;
+    }
+    return NULL;
+}
+
+STORAGE_ENGINE* storage_engine_get(RRD_MEMORY_MODE mmode)
+{
+    for (STORAGE_ENGINE* it = engines; it->name; it++) {
+        if (it->id == mmode)
+            return it;
+    }
+    return NULL;
+}
+
+STORAGE_ENGINE* storage_engine_foreach_init()
+{
+    // Assuming at least one engine exists
+    return &engines[0];
+}
+
+STORAGE_ENGINE* storage_engine_foreach_next(STORAGE_ENGINE* it)
+{
+    if (!it || !it->name)
+        return NULL;
+
+    it++;
+    return it->name ? it : NULL;
+}