Embedded analytics SDK - authentication
⚠️ This feature is in beta. Feel free to play around with it, but be aware that things might change (and may not work as expected).
Embedded analytics SDK is only available on Pro and Enterprise plans (both self-hosted and on Metabase Cloud).
Notes on handling authentication when working with the SDK.
Authenticating people from your server
The SDK requires an endpoint in your app’s backend that will sign someone into your Metabase and return a token. The SDK will use that token to authenticate calls to Metabase.
The SDK will call this endpoint to get a new token, or to refresh an existing token that’s about to expire.
Example code for generating a token
This example sets up an endpoint in an app, /sso/metabase, that creates a token using the shared secret to authenticate calls to Metabase.
const express = require("express");
const cors = require("cors");
const session = require("express-session")
const jwt = require("jsonwebtoken");
const fetch = require("node-fetch");
async function metabaseAuthHandler(req, res) {
const { user } = req.session;
if (!user) {
return res.status(401).json({
status: "error",
message: "not authenticated",
});
}
const token = jwt.sign(
{
email: user.email,
first_name: user.firstName,
last_name: user.lastName,
groups: [user.group],
exp: Math.round(Date.now() / 1000) + 60 * 10, // 10 minutes expiration
},
// This is the JWT signing secret in your Metabase JWT authentication setting
METABASE_JWT_SHARED_SECRET,
);
const ssoUrl = `${METABASE_INSTANCE_URL}/auth/sso?token=true&jwt=${token}`;
try {
const response = await fetch(ssoUrl, { method: "GET" });
const token = await response.json();
return res.status(200).json(token);
} catch (error) {
if (error instanceof Error) {
res.status(401).json({
status: "error",
message: "authentication failed",
error: error.message,
});
}
}
}
const app = express();
// Middleware
// If your FE application is on a different domain from your BE, you need to enable CORS
// by setting Access-Control-Allow-Credentials to true and Access-Control-Allow-Origin
// to your FE application URL.
//
// Limitation: We currently only support setting one origin in Authorized Origins in Metabase for CORS.
app.use(
cors({
credentials: true,
}),
);
app.use(
session({
secret: SESSION_SECRET,
resave: false,
saveUninitialized: true,
cookie: { secure: false },
}),
);
app.use(express.json());
// routes
app.get("/sso/metabase", metabaseAuthHandler);
app.listen(PORT, () => {
console.log(`API running at http://localhost:${PORT}`);
});
Getting Metabase authentication status
You can query the Metabase authentication status using the useMetabaseAuthStatus hook. This is useful if you want to completely hide Metabase components when the user is not authenticated.
This hook can only be used within components wrapped by MetabaseProvider.
const auth = useMetabaseAuthStatus();
if (auth.status === "error") {
return <div>Failed to authenticate: {auth.error.message}</div>;
}
if (auth.status === "success") {
return <InteractiveQuestion questionId={110} />;
}
Customizing JWT authentication
You can customize how the SDK fetches the refresh token by specifying the fetchRefreshToken function in the config prop:
/**
* This is the default implementation used in the SDK.
* You can customize this function to fit your needs, such as adding headers or excluding cookies.
* The function must return a JWT token object, or return "null" if the user is not authenticated.
* @returns {Promise<{id: string, exp: number} | null>}
*/
async function fetchRequestToken(url) {
const response = await fetch(url, {
method: "GET",
credentials: "include",
});
return await response.json();
}
// Pass this configuration to MetabaseProvider.
// Wrap the fetchRequestToken function in useCallback if it has dependencies to prevent re-renders.
const config = { fetchRequestToken };
Authenticating locally with API keys
The Embedded analytics SDK only supports JWT authentication in production. Authentication with API keys is only supported for local development and evaluation purposes.
For developing locally to try out the SDK, you can authenticate using an API key.
First, create an API key.
Then you can then use the API key to authenticate with Metabase in your application. All you need to do is include your API key in the config object using the key: apiKey.
const metabaseConfig = {
...
apiKey: "YOUR_API_KEY"
...
};
export default function App() {
return (
<MetabaseProvider config={metabaseConfig} className="optional-class">
Hello World!
</MetabaseProvider>
);
Read docs for other versions of Metabase.