feat(xo-server/collection/Redis): set of all indexes

packages/xo-server/src/collection/redis.mjs

@@ -18,6 +18,7 @@ import Collection, { ModelAlreadyExists } from '../collection.mjs'
 // ///////////////////////////////////////////////////////////////////
 // Data model:
 // - 'xo::namespaces': set of all available namespaces
+// - prefix + '::indexes': set containing all indexes;
 // - prefix +'_ids': set containing identifier of all models;
 // - prefix +'_'+ index +':' + lowerCase(value): set of identifiers
 //   which have value for the given index.
@@ -69,28 +70,32 @@ export default class Redis extends Collection {
       ::ignoreErrors()
   }
 
-  rebuildIndexes() {
+  async rebuildIndexes() {
     const { indexes, prefix, redis } = this
 
+    await redis.del(`${prefix}::indexes`)
+
     if (indexes.length === 0) {
-      return Promise.resolve()
+      return
     }
 
-    const idsIndex = `${prefix}_ids`
-    return asyncMapSettled(indexes, index =>
+    await redis.sadd(`${prefix}::indexes`, indexes)
+
+    await asyncMapSettled(indexes, index =>
       redis.keys(`${prefix}_${index}:*`).then(keys => keys.length !== 0 && redis.del(keys))
-    ).then(() =>
-      asyncMapSettled(redis.smembers(idsIndex), id =>
-        redis.hgetall(`${prefix}:${id}`).then(values =>
-          values == null
-            ? redis.srem(idsIndex, id) // entry no longer exists
-            : asyncMapSettled(indexes, index => {
-                const value = values[index]
-                if (value !== undefined) {
-                  return redis.sadd(`${prefix}_${index}:${String(value).toLowerCase()}`, id)
-                }
-              })
-        )
+    )
+
+    const idsIndex = `${prefix}_ids`
+    await asyncMapSettled(redis.smembers(idsIndex), id =>
+      redis.hgetall(`${prefix}:${id}`).then(values =>
+        values == null
+          ? redis.srem(idsIndex, id) // entry no longer exists
+          : asyncMapSettled(indexes, index => {
+              const value = values[index]
+              if (value !== undefined) {
+                return redis.sadd(`${prefix}_${index}:${String(value).toLowerCase()}`, id)
+              }
+            })
       )
     )
   }