├── api_tests ├── findAll.sh ├── findOne.sh ├── deleteOne.sh ├── patch.sh ├── variables.sh └── post.sh ├── wrangler.toml ├── src ├── utils.js ├── utils.ts ├── index.js └── index.ts ├── package.json ├── tsconfig.json ├── .gitignore ├── README.md └── LICENSE /api_tests/findAll.sh: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | source ./variables.sh 3 | curl "${worker_url}/api/todos" -H "authorization: ${api_key}" 4 | -------------------------------------------------------------------------------- /api_tests/findOne.sh: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | source ./variables.sh 3 | curl "${worker_url}/api/todos?id=${1}" -H "authorization: ${api_key}" 4 | -------------------------------------------------------------------------------- /api_tests/deleteOne.sh: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | source ./variables.sh 3 | curl -X DELETE "${worker_url}/api/todos?id=${1}" -H "authorization: ${api_key}" 4 | -------------------------------------------------------------------------------- /api_tests/patch.sh: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | source ./variables.sh 3 | curl -X PATCH "${worker_url}/api/todos?id=${1}&done=${2}" -H "authorization: ${api_key}" 4 | -------------------------------------------------------------------------------- /api_tests/variables.sh: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | worker_url="https://mongo-realm-worker.YOUR_SUBDOMAIN.workers.dev" 3 | api_key="YOUR_ATLAS_APP_AUTH_API_KEY" 4 | -------------------------------------------------------------------------------- /api_tests/post.sh: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | source ./variables.sh 3 | curl -X POST "${worker_url}/api/todos" -H "authorization: ${api_key}" -H 'Content-Type: application/json' -d '{"todo":"'"${1}"'"}' 4 | -------------------------------------------------------------------------------- /wrangler.toml: -------------------------------------------------------------------------------- 1 | name = "mongo-realm-worker" 2 | main = "src/index.ts" 3 | compatibility_date = "2024-03-29" 4 | compatibility_flags = ["nodejs_compat"] 5 | 6 | account_id = "CLOUDFLARE_ACCOUNT_ID" 7 | workers_dev = true # or zone_id = "" if you have one 8 | 9 | [vars] 10 | ATLAS_APPID = "MONGODB_ATLAS_APPID" 11 | 12 | -------------------------------------------------------------------------------- /src/utils.js: -------------------------------------------------------------------------------- 1 | export function toJSON(data, status = 200) { 2 | let body = JSON.stringify(data, null, 2); 3 | let headers = { 'content-type': 'application/json' }; 4 | return new Response(body, { headers, status }); 5 | } 6 | export function toError(error, status = 400) { 7 | return toJSON({ error }, status); 8 | } 9 | export function reply(output) { 10 | if (output != null) 11 | return toJSON(output, 200); 12 | return toError('Error with query', 500); 13 | } 14 | -------------------------------------------------------------------------------- /src/utils.ts: -------------------------------------------------------------------------------- 1 | export function toJSON(data: unknown, status = 200): Response { 2 | let body = JSON.stringify(data, null, 2); 3 | let headers = {'content-type': 'application/json'}; 4 | return new Response(body, {headers, status}); 5 | } 6 | 7 | export function toError(error: string | unknown, status = 400): Response { 8 | return toJSON({error}, status); 9 | } 10 | 11 | export function reply(output: any): Response { 12 | if (output != null) return toJSON(output, 200); 13 | return toError('Error with query', 500); 14 | } 15 | -------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "private": true, 3 | "name": "test-realm", 4 | "scripts": { 5 | "types": "tsc --noEmit --skipLibCheck", 6 | "deploy": "wrangler deploy", 7 | "dev": "wrangler dev", 8 | "start": "wrangler dev", 9 | "test": "vitest" 10 | }, 11 | "dependencies": { 12 | "realm-web": "^2.0.0" 13 | }, 14 | "devDependencies": { 15 | "@cloudflare/vitest-pool-workers": "^0.1.0", 16 | "@cloudflare/workers-types": "^4.20240320.1", 17 | "typescript": "^5.0.4", 18 | "vitest": "1.3.0", 19 | "wrangler": "^3.0.0" 20 | } 21 | } 22 | -------------------------------------------------------------------------------- /tsconfig.json: -------------------------------------------------------------------------------- 1 | { 2 | "compilerOptions": { 3 | "strict": true, 4 | "target": "esnext", 5 | "alwaysStrict": true, 6 | "esModuleInterop": false, 7 | "moduleResolution": "node", 8 | "lib": ["esnext", "webworker"], 9 | "types": ["@cloudflare/workers-types"], 10 | "forceConsistentCasingInFileNames": true, 11 | "verbatimModuleSyntax": true, 12 | "strictFunctionTypes": true, 13 | "resolveJsonModule": true, 14 | "strictNullChecks": true, 15 | "isolatedModules": false, 16 | "noImplicitThis": true, 17 | "noImplicitAny": true, 18 | "module": "esnext" 19 | }, 20 | "include": [ 21 | "@types", 22 | "src" 23 | ] 24 | } 25 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # IDEA 2 | .idea/ 3 | 4 | # Build wrangler 5 | build/ 6 | 7 | # Logs 8 | logs 9 | *.log 10 | npm-debug.log* 11 | yarn-debug.log* 12 | yarn-error.log* 13 | lerna-debug.log* 14 | 15 | # Diagnostic reports (https://nodejs.org/api/report.html) 16 | report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json 17 | 18 | # Runtime data 19 | pids 20 | *.pid 21 | *.seed 22 | *.pid.lock 23 | 24 | # Directory for instrumented libs generated by jscoverage/JSCover 25 | lib-cov 26 | 27 | # Coverage directory used by tools like istanbul 28 | coverage 29 | *.lcov 30 | 31 | # nyc test coverage 32 | .nyc_output 33 | 34 | # Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files) 35 | .grunt 36 | 37 | # Bower dependency directory (https://bower.io/) 38 | bower_components 39 | 40 | # node-waf configuration 41 | .lock-wscript 42 | 43 | # Compiled binary addons (https://nodejs.org/api/addons.html) 44 | build/Release 45 | 46 | # Dependency directories 47 | node_modules/ 48 | jspm_packages/ 49 | 50 | # TypeScript v1 declaration files 51 | typings/ 52 | 53 | # TypeScript cache 54 | *.tsbuildinfo 55 | 56 | # Optional npm cache directory 57 | .npm 58 | 59 | # Optional eslint cache 60 | .eslintcache 61 | 62 | # Microbundle cache 63 | .rpt2_cache/ 64 | .rts2_cache_cjs/ 65 | .rts2_cache_es/ 66 | .rts2_cache_umd/ 67 | 68 | # Optional REPL history 69 | .node_repl_history 70 | 71 | # Output of 'npm pack' 72 | *.tgz 73 | 74 | # Yarn Integrity file 75 | .yarn-integrity 76 | 77 | # dotenv environment variables file 78 | .env 79 | .env.test 80 | 81 | # parcel-bundler cache (https://parceljs.org/) 82 | .cache 83 | 84 | # Next.js build output 85 | .next 86 | 87 | # Nuxt.js build / generate output 88 | .nuxt 89 | dist 90 | 91 | # Gatsby files 92 | .cache/ 93 | # Comment in the public line in if your project uses Gatsby and *not* Next.js 94 | # https://nextjs.org/blog/next-9-1#public-directory-support 95 | # public 96 | 97 | # vuepress build output 98 | .vuepress/dist 99 | 100 | # Serverless directories 101 | .serverless/ 102 | 103 | # FuseBox cache 104 | .fusebox/ 105 | 106 | # DynamoDB Local files 107 | .dynamodb/ 108 | 109 | # TernJS port file 110 | .tern-port 111 | -------------------------------------------------------------------------------- /src/index.js: -------------------------------------------------------------------------------- 1 | import * as Realm from 'realm-web'; 2 | import * as utils from './utils'; 3 | let App; 4 | const ObjectId = Realm.BSON.ObjectID; 5 | // Define the Worker logic 6 | const worker = { 7 | async fetch(req, env) { 8 | const url = new URL(req.url); 9 | App = App || new Realm.App(env.ATLAS_APPID); 10 | const method = req.method; 11 | const path = url.pathname.replace(/[/]$/, ''); 12 | const todoID = url.searchParams.get('id') || ''; 13 | if (path !== '/api/todos') { 14 | return utils.toError(`Unknown '${path}' URL; try '/api/todos' instead.`, 404); 15 | } 16 | const token = req.headers.get('authorization'); 17 | if (!token) 18 | return utils.toError(`Missing 'authorization' header; try to add the header 'authorization: ATLAS_APP_API_KEY'.`, 401); 19 | try { 20 | const credentials = Realm.Credentials.apiKey(token); 21 | // Attempt to authenticate 22 | var user = await App.logIn(credentials); 23 | var client = user.mongoClient('mongodb-atlas'); 24 | } 25 | catch (err) { 26 | return utils.toError('Error with authentication.', 500); 27 | } 28 | // Grab a reference to the "cloudflare.todos" collection 29 | const collection = client.db('cloudflare').collection('todos'); 30 | try { 31 | if (method === 'GET') { 32 | if (todoID) { 33 | // GET /api/todos?id=XXX 34 | return utils.reply(await collection.findOne({ 35 | _id: new ObjectId(todoID) 36 | })); 37 | } 38 | // GET /api/todos 39 | return utils.reply(await collection.find()); 40 | } 41 | // POST /api/todos 42 | if (method === 'POST') { 43 | const { todo } = await req.json(); 44 | return utils.reply(await collection.insertOne({ 45 | owner_id: user.id, 46 | done: false, 47 | todo: todo, 48 | })); 49 | } 50 | // PATCH /api/todos?id=XXX&done=true 51 | if (method === 'PATCH') { 52 | return utils.reply(await collection.updateOne({ 53 | _id: new ObjectId(todoID) 54 | }, { 55 | $set: { 56 | done: url.searchParams.get('done') === 'true' 57 | } 58 | })); 59 | } 60 | // DELETE /api/todos?id=XXX 61 | if (method === 'DELETE') { 62 | return utils.reply(await collection.deleteOne({ 63 | _id: new ObjectId(todoID) 64 | })); 65 | } 66 | // unknown method 67 | return utils.toError('Method not allowed.', 405); 68 | } 69 | catch (err) { 70 | const msg = err.message || 'Error with query.'; 71 | return utils.toError(msg, 500); 72 | } 73 | } 74 | }; 75 | // Export for discoverability 76 | export default worker; 77 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Notice: Repository Deprecation 2 | This repository is deprecated and no longer actively maintained. It contains outdated code examples or practices that do not align with current MongoDB best practices. While the repository remains accessible for reference purposes, we strongly discourage its use in production environments. 3 | Users should be aware that this repository will not receive any further updates, bug fixes, or security patches. This code may expose you to security vulnerabilities, compatibility issues with current MongoDB versions, and potential performance problems. Any implementation based on this repository is at the user's own risk. 4 | For up-to-date resources, please refer to the [MongoDB Developer Center](https://mongodb.com/developer). 5 | 6 | 7 | # REST API with a Cloudflare Worker and a MongoDB Atlas Cluster 8 | 9 | This project explains how to build a REST API in a Cloudflare worker using MongoDB Realm Web SDK and a MongoDB Atlas cluster to store the data. 10 | 11 | # How it Works 12 | 13 | - The MongoDB Atlas cluster stores the data in the `cloudflare.todos` collection. 14 | - A MongoDB Atlas App Services App manages the authentication and the collection access rules. 15 | - A Cloudflare worker uses the Realm Web SDK to authenticate and retrieve the data that is then exposed with a REST API. 16 | 17 | # Prerequisites 18 | 19 | - MongoDB Cloud account. 20 | - MongoDB Atlas Cluster (M0 is fine). 21 | - MongoDB Atlas App Services Application created & deployed. 22 | - with Authentication API Keys turned on + an API key created. 23 | - with a rule on the collection `cloudflare.todos` with a role "owner" with read and write access on all the fields, applied when `{"owner": "%%user.id"}`. 24 | - Cloudflare account (free plan is fine) with a `*.workers.dev` subdomain. 25 | 26 | To deploy & test the API we need: 27 | - The Atlas App Services Application ID (top left corner). 28 | - The App authentication API key (in Authentication tab > API Keys). 29 | - The Cloudflare account login/password. 30 | - The Cloudflare account ID (in Workers tab > Overview). 31 | - The Cloudflare `*.workers.dev` subdomain (in Workers tab > Overview). 32 | 33 | # Build and Deploy 34 | 35 | Clone this repository 36 | ```shell 37 | git clone git@github.com:mongodb-developer/cloudflare-worker-rest-api-atlas.git 38 | cd cloudflare-worker-rest-api-atlas 39 | ``` 40 | 41 | Edit the file `wrangler.toml` 42 | - replace `CLOUDFLARE_ACCOUNT_ID` by your real Cloudflare account ID. 43 | - replace `MONGODB_REALM_APPID` by your real MongoDB Atlas App Services App ID. 44 | 45 | If you want to use the bash files to test the REST API, edit the file `api_tests/variables.sh`: 46 | - replace `YOUR_SUBDOMAIN` so the final worker URL matches yours. 47 | - replace `YOUR_REALM_AUTH_API_KEY` with your App auth API key. 48 | 49 | Run the following commands: 50 | 51 | ```shell 52 | $ npm i wrangler -g 53 | $ wrangler login 54 | $ wrangler deploy 55 | $ cd api_tests 56 | $ ./post.sh "Write a good README.md for Github" 57 | $ ./post.sh "Commit and push" 58 | $ ./findAll.sh 59 | $ ./findOne.sh # replace with an _id from the previous command 60 | $ ./patch.sh true 61 | $ ./findAll.sh # note that done=true now on your todo 62 | $ ./deleteOne.sh 63 | $ ./findAll.sh # only one left 64 | ``` 65 | 66 | You can also navigate to your MongoDB Atlas Cluster and browse your collection `cloudflare.todos` to confirm the above tests. 67 | 68 | # Authors 69 | 70 | - [Luke Edwards](https://x.com/lukeed05) 71 | - [Maxime Beugnet](https://x.com/mbeugnet) 72 | -------------------------------------------------------------------------------- /src/index.ts: -------------------------------------------------------------------------------- 1 | import * as Realm from 'realm-web'; 2 | import * as utils from './utils'; 3 | 4 | // The Worker's environment bindings. See `wrangler.toml` file. 5 | interface Bindings { 6 | // MongoDB Atlas Application ID 7 | ATLAS_APPID: string; 8 | } 9 | 10 | // Define type alias; available via `realm-web` 11 | type Document = globalThis.Realm.Services.MongoDB.Document; 12 | 13 | // Declare the interface for a "todos" document 14 | interface Todo extends Document { 15 | owner_id: string; 16 | done: boolean; 17 | todo: string; 18 | } 19 | 20 | let App: Realm.App; 21 | const ObjectId = Realm.BSON.ObjectID; 22 | 23 | // Define the Worker logic 24 | const worker: ExportedHandler = { 25 | async fetch(req, env) { 26 | const url = new URL(req.url); 27 | App = App || new Realm.App(env.ATLAS_APPID); 28 | 29 | const method = req.method; 30 | const path = url.pathname.replace(/[/]$/, ''); 31 | const todoID = url.searchParams.get('id') || ''; 32 | 33 | if (path !== '/api/todos') { 34 | return utils.toError(`Unknown '${path}' URL; try '/api/todos' instead.`, 404); 35 | } 36 | 37 | const token = req.headers.get('authorization'); 38 | if (!token) return utils.toError(`Missing 'authorization' header; try to add the header 'authorization: ATLAS_APP_API_KEY'.`, 401); 39 | 40 | try { 41 | const credentials = Realm.Credentials.apiKey(token); 42 | // Attempt to authenticate 43 | var user = await App.logIn(credentials); 44 | var client = user.mongoClient('mongodb-atlas'); 45 | } catch (err) { 46 | return utils.toError('Error with authentication.', 500); 47 | } 48 | 49 | // Grab a reference to the "cloudflare.todos" collection 50 | const collection = client.db('cloudflare').collection('todos'); 51 | 52 | try { 53 | if (method === 'GET') { 54 | if (todoID) { 55 | // GET /api/todos?id=XXX 56 | return utils.reply( 57 | await collection.findOne({ 58 | _id: new ObjectId(todoID) 59 | }) 60 | ); 61 | } 62 | 63 | // GET /api/todos 64 | return utils.reply( 65 | await collection.find() 66 | ); 67 | } 68 | 69 | // POST /api/todos 70 | if (method === 'POST') { 71 | const {todo} = await req.json(); 72 | return utils.reply( 73 | await collection.insertOne({ 74 | owner_id: user.id, 75 | done: false, 76 | todo: todo, 77 | }) 78 | ); 79 | } 80 | 81 | // PATCH /api/todos?id=XXX&done=true 82 | if (method === 'PATCH') { 83 | return utils.reply( 84 | await collection.updateOne({ 85 | _id: new ObjectId(todoID) 86 | }, { 87 | $set: { 88 | done: url.searchParams.get('done') === 'true' 89 | } 90 | }) 91 | ); 92 | } 93 | 94 | // DELETE /api/todos?id=XXX 95 | if (method === 'DELETE') { 96 | return utils.reply( 97 | await collection.deleteOne({ 98 | _id: new ObjectId(todoID) 99 | }) 100 | ); 101 | } 102 | 103 | // unknown method 104 | return utils.toError('Method not allowed.', 405); 105 | } catch (err) { 106 | const msg = (err as Error).message || 'Error with query.'; 107 | return utils.toError(msg, 500); 108 | } 109 | } 110 | } 111 | 112 | // Export for discoverability 113 | export default worker; 114 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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