From 891a81966148b8c973e9804b8b7952a95f3a6fd6 Mon Sep 17 00:00:00 2001
From: Chocobozzz <me@florianbigard.com>
Date: Thu, 19 Mar 2020 10:54:02 +0100
Subject: [PATCH] Optimize sql requests on broadcast

---
 server/models/video/video-share.ts | 89 ++++++++++++------------------
 1 file changed, 36 insertions(+), 53 deletions(-)

diff --git a/server/models/video/video-share.ts b/server/models/video/video-share.ts
index 50525b4c2..4bbef75e6 100644
--- a/server/models/video/video-share.ts
+++ b/server/models/video/video-share.ts
@@ -2,12 +2,10 @@ import * as Bluebird from 'bluebird'
 import { AllowNull, BelongsTo, Column, CreatedAt, DataType, ForeignKey, Is, Model, Scopes, Table, UpdatedAt } from 'sequelize-typescript'
 import { isActivityPubUrlValid } from '../../helpers/custom-validators/activitypub/misc'
 import { CONSTRAINTS_FIELDS } from '../../initializers/constants'
-import { AccountModel } from '../account/account'
 import { ActorModel } from '../activitypub/actor'
 import { buildLocalActorIdsIn, throwIfNotValid } from '../utils'
 import { VideoModel } from './video'
-import { VideoChannelModel } from './video-channel'
-import { Op, Transaction } from 'sequelize'
+import { literal, Op, Transaction } from 'sequelize'
 import { MVideoShareActor, MVideoShareFull } from '../../typings/models/video'
 import { MActorDefault } from '../../typings/models'
 
@@ -124,70 +122,55 @@ export class VideoShareModel extends Model<VideoShareModel> {
     }
 
     return VideoShareModel.scope(ScopeNames.FULL).findAll(query)
-      .then((res: MVideoShareFull[]) => res.map(r => r.Actor))
+                          .then((res: MVideoShareFull[]) => res.map(r => r.Actor))
   }
 
   static loadActorsWhoSharedVideosOf (actorOwnerId: number, t: Transaction): Bluebird<MActorDefault[]> {
+    const safeOwnerId = parseInt(actorOwnerId + '', 10)
+
+    // /!\ On actor model
     const query = {
-      attributes: [],
-      include: [
-        {
-          model: ActorModel,
-          required: true
-        },
-        {
-          attributes: [],
-          model: VideoModel,
-          required: true,
-          include: [
-            {
-              attributes: [],
-              model: VideoChannelModel.unscoped(),
-              required: true,
-              include: [
-                {
-                  attributes: [],
-                  model: AccountModel.unscoped(),
-                  required: true,
-                  where: {
-                    actorId: actorOwnerId
-                  }
-                }
-              ]
-            }
-          ]
-        }
-      ],
+      where: {
+        [Op.and]: [
+          literal(
+            `EXISTS (` +
+            `  SELECT 1 FROM "videoShare" ` +
+            `  INNER JOIN "video" ON "videoShare"."videoId" = "video"."id" ` +
+            `  INNER JOIN "videoChannel" ON "videoChannel"."id" = "video"."channelId" ` +
+            `  INNER JOIN "account" ON "account"."id" = "videoChannel"."accountId" ` +
+            `  WHERE "videoShare"."actorId" = "ActorModel"."id" AND "account"."actorId" = ${safeOwnerId} ` +
+            `  LIMIT 1` +
+            `)`
+          )
+        ]
+      },
       transaction: t
     }
 
-    return VideoShareModel.scope(ScopeNames.FULL).findAll(query)
-      .then(res => res.map(r => r.Actor))
+    return ActorModel.findAll(query)
   }
 
   static loadActorsByVideoChannel (videoChannelId: number, t: Transaction): Bluebird<MActorDefault[]> {
+    const safeChannelId = parseInt(videoChannelId + '', 10)
+
+    // /!\ On actor model
     const query = {
-      attributes: [],
-      include: [
-        {
-          model: ActorModel,
-          required: true
-        },
-        {
-          attributes: [],
-          model: VideoModel,
-          required: true,
-          where: {
-            channelId: videoChannelId
-          }
-        }
-      ],
+      where: {
+        [Op.and]: [
+          literal(
+            `EXISTS (` +
+            `  SELECT 1 FROM "videoShare" ` +
+            `  INNER JOIN "video" ON "videoShare"."videoId" = "video"."id" ` +
+            `  WHERE "videoShare"."actorId" = "ActorModel"."id" AND "video"."channelId" = ${safeChannelId} ` +
+            `  LIMIT 1` +
+            `)`
+          )
+        ]
+      },
       transaction: t
     }
 
-    return VideoShareModel.scope(ScopeNames.FULL)
-      .findAll(query)
-      .then(res => res.map(r => r.Actor))
+    return ActorModel.findAll(query)
   }
 
   static listAndCountByVideoId (videoId: number, start: number, count: number, t?: Transaction) {