From f201a749929ec8094a7ba6bcab7b196870ca5a5e Mon Sep 17 00:00:00 2001
From: Chocobozzz <me@florianbigard.com>
Date: Thu, 20 Sep 2018 11:31:48 +0200
Subject: Cache user token

---
 server/lib/oauth-model.ts | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

(limited to 'server/lib/oauth-model.ts')

diff --git a/server/lib/oauth-model.ts b/server/lib/oauth-model.ts
index 2f8667e19..5cbe60b82 100644
--- a/server/lib/oauth-model.ts
+++ b/server/lib/oauth-model.ts
@@ -4,15 +4,50 @@ import { UserModel } from '../models/account/user'
 import { OAuthClientModel } from '../models/oauth/oauth-client'
 import { OAuthTokenModel } from '../models/oauth/oauth-token'
 import { CONFIG } from '../initializers/constants'
+import { Transaction } from 'sequelize'
 
 type TokenInfo = { accessToken: string, refreshToken: string, accessTokenExpiresAt: Date, refreshTokenExpiresAt: Date }
+const accessTokenCache: { [ accessToken: string ]: OAuthTokenModel } = {}
+const userHavingToken: { [ userId: number ]: string } = {}
 
 // ---------------------------------------------------------------------------
 
+function deleteUserToken (userId: number, t?: Transaction) {
+  clearCacheByUserId(userId)
+
+  return OAuthTokenModel.deleteUserToken(userId, t)
+}
+
+function clearCacheByUserId (userId: number) {
+  const token = userHavingToken[userId]
+  if (token !== undefined) {
+    accessTokenCache[ token ] = undefined
+    userHavingToken[ userId ] = undefined
+  }
+}
+
+function clearCacheByToken (token: string) {
+  const tokenModel = accessTokenCache[ token ]
+  if (tokenModel !== undefined) {
+    userHavingToken[tokenModel.userId] = undefined
+    accessTokenCache[ token ] = undefined
+  }
+}
+
 function getAccessToken (bearerToken: string) {
   logger.debug('Getting access token (bearerToken: ' + bearerToken + ').')
 
+  if (accessTokenCache[bearerToken] !== undefined) return accessTokenCache[bearerToken]
+
   return OAuthTokenModel.getByTokenAndPopulateUser(bearerToken)
+    .then(tokenModel => {
+      if (tokenModel) {
+        accessTokenCache[ bearerToken ] = tokenModel
+        userHavingToken[ tokenModel.userId ] = tokenModel.accessToken
+      }
+
+      return tokenModel
+    })
 }
 
 function getClient (clientId: string, clientSecret: string) {
@@ -48,6 +83,8 @@ async function getUser (usernameOrEmail: string, password: string) {
 async function revokeToken (tokenInfo: TokenInfo) {
   const token = await OAuthTokenModel.getByRefreshTokenAndPopulateUser(tokenInfo.refreshToken)
   if (token) {
+    clearCacheByToken(token.accessToken)
+
     token.destroy()
          .catch(err => logger.error('Cannot destroy token when revoking token.', { err }))
   }
@@ -85,6 +122,9 @@ async function saveToken (token: TokenInfo, client: OAuthClientModel, user: User
 
 // See https://github.com/oauthjs/node-oauth2-server/wiki/Model-specification for the model specifications
 export {
+  deleteUserToken,
+  clearCacheByUserId,
+  clearCacheByToken,
   getAccessToken,
   getClient,
   getRefreshToken,
-- 
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