Add idempotency (#6748)

* added idempotency router and middleware

* added idempotency rules for routes classes, functions, jobs, installaions, users

* fixed typo

* ignore requests without header

* removed unused var

* enabled feature only for MongoDB

* changed code comment

* fixed inconsistend storage adapter specification

* Trigger notification

* Travis CI trigger

* Travis CI trigger

* Travis CI trigger

* rebuilt option definitions

* fixed incorrect import path

* added new request ID header to allowed headers

* fixed typescript typos

* add new system class to spec helper

* fixed typescript typos

* re-added postgres conn parameter

* removed postgres conn parameter

* fixed incorrect schema for index creation

* temporarily disabling index creation to fix postgres issue

* temporarily disabling index creation to fix postgres issue

* temporarily disabling index creation to fix postgres issue

* temporarily disabling index creation to fix postgres issue

* temporarily disabling index creation to fix postgres issue

* temporarily disabling index creation to fix postgres issue

* temporarily disabling index creation to fix postgres issue

* trying to fix postgres issue

* fixed incorrect auth when writing to _Idempotency

* trying to fix postgres issue

* Travis CI trigger

* added test cases

* removed number grouping

* fixed test description

* trying to fix postgres issue

* added Github readme docs

* added change log

* refactored tests; fixed some typos

* fixed test case

* fixed default TTL value

* Travis CI Trigger

* Travis CI Trigger

* Travis CI Trigger

* added test case to increase coverage

* Trigger Travis CI

* changed configuration syntax to use regex; added test cases

* removed unused vars

* removed IdempotencyRouter

* Trigger Travis CI

* updated docs

* updated docs

* updated docs

* updated docs

* update docs

* Trigger Travis CI

* fixed coverage

* removed code comments

src/Routers/ClassesRouter.js

@@ -2,6 +2,7 @@ import PromiseRouter from '../PromiseRouter';
 import rest from '../rest';
 import _ from 'lodash';
 import Parse from 'parse/node';
+import { promiseEnsureIdempotency } from '../middlewares';
 
 const ALLOWED_GET_QUERY_KEYS = [
   'keys',
@@ -247,10 +248,10 @@ export class ClassesRouter extends PromiseRouter {
     this.route('GET', '/classes/:className/:objectId', req => {
       return this.handleGet(req);
     });
-    this.route('POST', '/classes/:className', req => {
+    this.route('POST', '/classes/:className', promiseEnsureIdempotency, req => {
       return this.handleCreate(req);
     });
-    this.route('PUT', '/classes/:className/:objectId', req => {
+    this.route('PUT', '/classes/:className/:objectId', promiseEnsureIdempotency, req => {
       return this.handleUpdate(req);
     });
     this.route('DELETE', '/classes/:className/:objectId', req => {

src/Routers/FunctionsRouter.js

@@ -4,7 +4,7 @@ var Parse = require('parse/node').Parse,
   triggers = require('../triggers');
 
 import PromiseRouter from '../PromiseRouter';
-import { promiseEnforceMasterKeyAccess } from '../middlewares';
+import { promiseEnforceMasterKeyAccess, promiseEnsureIdempotency } from '../middlewares';
 import { jobStatusHandler } from '../StatusHandler';
 import _ from 'lodash';
 import { logger } from '../logger';
@@ -34,11 +34,13 @@ export class FunctionsRouter extends PromiseRouter {
     this.route(
       'POST',
       '/functions/:functionName',
+      promiseEnsureIdempotency,
       FunctionsRouter.handleCloudFunction
     );
     this.route(
       'POST',
       '/jobs/:jobName',
+      promiseEnsureIdempotency,
       promiseEnforceMasterKeyAccess,
       function (req) {
         return FunctionsRouter.handleCloudJob(req);

src/Routers/InstallationsRouter.js

@@ -2,6 +2,7 @@
 
 import ClassesRouter from './ClassesRouter';
 import rest from '../rest';
+import { promiseEnsureIdempotency } from '../middlewares';
 
 export class InstallationsRouter extends ClassesRouter {
   className() {
@@ -36,10 +37,10 @@ export class InstallationsRouter extends ClassesRouter {
     this.route('GET', '/installations/:objectId', req => {
       return this.handleGet(req);
     });
-    this.route('POST', '/installations', req => {
+    this.route('POST', '/installations', promiseEnsureIdempotency, req => {
       return this.handleCreate(req);
     });
-    this.route('PUT', '/installations/:objectId', req => {
+    this.route('PUT', '/installations/:objectId', promiseEnsureIdempotency, req => {
       return this.handleUpdate(req);
     });
     this.route('DELETE', '/installations/:objectId', req => {

src/Routers/UsersRouter.js

@@ -8,6 +8,7 @@ import rest from '../rest';
 import Auth from '../Auth';
 import passwordCrypto from '../password';
 import { maybeRunTrigger, Types as TriggerTypes } from '../triggers';
+import { promiseEnsureIdempotency } from '../middlewares';
 
 export class UsersRouter extends ClassesRouter {
   className() {
@@ -445,7 +446,7 @@ export class UsersRouter extends ClassesRouter {
     this.route('GET', '/users', req => {
       return this.handleFind(req);
     });
-    this.route('POST', '/users', req => {
+    this.route('POST', '/users', promiseEnsureIdempotency, req => {
       return this.handleCreate(req);
     });
     this.route('GET', '/users/me', req => {
@@ -454,7 +455,7 @@ export class UsersRouter extends ClassesRouter {
     this.route('GET', '/users/:objectId', req => {
       return this.handleGet(req);
     });
-    this.route('PUT', '/users/:objectId', req => {
+    this.route('PUT', '/users/:objectId', promiseEnsureIdempotency, req => {
       return this.handleUpdate(req);
     });
     this.route('DELETE', '/users/:objectId', req => {