2022-10-17 12:49:03 -07:00

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outline: deep
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# Authenticate Hook
The `authenticate` hook will use `params.authentication` of the service method call and run [authenticationService.authenticate()]().
## authenticate(... strategies)
## authenticate(options)
It should be used as a `before` hook and either takes a list of strategy names (using `app.service('authentication')` as the authentication service) or an object with `service` set to the authentication service name and `strategies` set to a list of strategy names to authenticate with:
```js
const { authenticate } = require('@feathersjs/authentication');
// Authenticate with `jwt` and `api-key` strategy
// using app.service('authentication') as the authentication service
app.service('messages').hooks({
before: authenticate('jwt', 'api-key')
});
// Authenticate with `jwt` and `api-key` strategy
// using app.service('v1/authentication') as the authentication service
app.service('messages').hooks({
before: authenticate({
service: 'v1/authentication',
strategies: [ 'jwt', 'api-key' ]
})
});
```
The hook will
- Throw an error if the strategy fails
- Throw an error if no authentication information is set and it is an external call (`params.provider` is set) or do nothing if it is an internal call (`params.provider` is `undefined`)
- If successful, merge `params` with the return value of the authentication strategy
For example, a successful [JWT strategy](./jwt.md) authentication will set:
```js
params.authentication.payload // The decoded payload
params.authentication.strategy === 'jwt' // The strategy name
params.user // or params[entity] if entity is not `null`
```
In the following hooks and for the service method call.