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Nov 26, 2019
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Adding the Modifying middleware chain samples #247

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37 changes: 37 additions & 0 deletions docs/CustomMiddlewareChain.md
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Original file line number Diff line number Diff line change
Expand Up @@ -144,3 +144,40 @@ export class MyLoggingHandler implements Middleware {
}
```
Refer [MiddlewareOptions](../src/middleware/options/IMiddlewareOptions.ts) interface to know its structure.

### Modifying the Current Middleware Chain

```js
// initialising client
const client = MicrosoftGraph.Client.init({
defaultVersion: "v1.0",
debugLogging: true,
authProvider: (done) => {
done(null, secrets.accessToken);
},
});

// getting the current middleware chain (in this case, it's the default one)
let arr = client.getMiddlewareChain();

// Initialising the Middleware chain that we created
const dummyRandomHandler = new dummyRandomHandler();

// adding the dummy handler in the array of middlewares at 3rd position
arr.splice(2, 0, dummyRandomHandler);

// setting the new middleware chain
client.setMiddlewareChain(arr);

// calling the api
client
.api("/me")
.select("displayName")
.get()
.then((res) => {
console.log(res);
})
.catch((err) => {
console.log(err);
});
```