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The Data Theorem API Protect NodeJS SDK is a NodeJS library that provides protection for APIs written in Javascript. The SDK integrates with your NodeJS API using the API Protect middleware which supports most popular NodeJS frameworks, including:
To Protect an API, all the API developer needs to do is add the API Protect middleware to their web application code set the client Id we provide
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To install API Protect the provided NodeJS package must be added as a dependency, typically by adding it to a package.json file. Here is an example of how to add the package:
Example adding dependency to
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via npm
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npm install ./apiprotect-v1.0.0.tgz |
Example adding dependency to via yarn
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yarn add file:./apiprotect-v1.0.0.tgz |
Step 2: Add the middleware to the application
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This middleware shouldmay be added before or after any logging middleware, but it should be after body parsing middleware and before other middleware or application code. Request Flow ┌───────────────────────────────────┐ │ │ Logging Middleware │ │ └───────────────────────────────────┘ │ ┌───────────────────────────────────┐ │ │ Body Parsing Middleware │ │ └───────────────────────────────────┘ │ ┌───────────────────────────────────┐ │ │ Api Protect Middleware │ │ └───────────────────────────────────┘ │ ┌───────────────────────────────────┐ │ │ LoggingOther Middleware │ │ └───────────────────────────────────┘ │ │ ▼ * OR * Request Flow ┌───────────────────────────────────┐ │ │ Body Parsing Middleware │ │ └───────────────────────────────────┘ │ │ ┌───────────────────────────────────┐ │ │ Api Protect Middleware │ │ └───────────────────────────────────┘ │ ┌───────────────────────────────────┐ │ │ Logging Middleware │ │ └───────────────────────────────────┘ │ ┌───────────────────────────────────┐ │ │ Other Middleware │ │ └───────────────────────────────────┘ │ │ ▼ |
Example using Express middleware
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// example using Express middleware const express = require('express') const apiprotect_middleware = require('./apiprotect-express-middlware.js') const app = express() |
Example using Express middleware
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const express = require('express'); const apiprotect = require('apiprotect'); const app = express(); // Register body parsing middlware then APIProtect middlware app.use(express.json()); app.use(apiprotect_middleware.default()); // ClientId read from ENV: `DT_API_PROTECT_CLIENT_ID` |
Step 3: Set the Client ID
For each API you protect Data Theorem provides a unique identifier which authenticates the SDK when it communicates with our services. The client id we provide can be set in two way, either via an environment variable DT_API_PROTECT_CLIENT_ID or by passing it directly to the middleware.
The client id is in a file named client_id in the sdk bundle you downloaded.
Example setting the client id via ENV Var
> source ./client_id && npm run
Setting the environment variable is the preferred way, but if you need to pass it to the middleware, here is how to do that:
Example passing
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clientId to Express middleware
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// example passing client_id to Express middleware const express = require('express'); const apiprotect_middleware = require('./apiprotect-express-middlware.js'); const settings = require('settings') const app = express(); // Register body parsing middlware then APIProtect middlware app.use(express.json()); app.use(apiprotect_middleware({"clientId": .default(settings.clientId})); // ClientId passed as param |