setupLogging(conf)

	var loggedPrevResult any
	if conf.PrevResult == nil {
		loggedPrevResult = "none"
	} else {
		loggedPrevResult = conf.PrevResult
	}
	log.WithLabels("if", args.IfName).Debugf("istio-cni CmdAdd config: %+v", conf)
	log.Debugf("istio-cni CmdAdd previous result: %+v", loggedPrevResult)

	// Determine if running under k8s by checking the CNI args
	k8sArgs := K8sArgs{}

	if err == nil {
		t.Fatal("expected to fail, but did not!")
	}

	return mockRedir
}

func testDoAddRun(t *testing.T, stdinData, nsName string, objects ...runtime.Object) *mockInterceptRuleMgr {
	args := buildCmdArgs(stdinData, testPodName, nsName)

	conf, err := parseConfig(args.StdinData)
	if err != nil {
		t.Fatalf("config parse failed with error: %v", err)
	}

	// Create a kube client

And these same full-stack generators were the base of the [**FastAPI** Project Generators](project-generation.md){.internal-link target=_blank}.

!!! info
    Flask-apispec was created by the same Marshmallow developers.

!!! check "Inspired **FastAPI** to"
    Generate the OpenAPI schema automatically, from the same code that defines serialization and validation.

But it's still part of the same **FastAPI** application/web API (it's part of the same "Python Package").

You can create the *path operations* for that module using `APIRouter`.

### Import `APIRouter`

You import it and create an "instance" the same way you would with the class `FastAPI`:

```Python hl_lines="1  3" title="app/routers/users.py"

	return nil
}

// SetNotifyES - helper for config migration from older config.
func SetNotifyES(s config.Config, esName string, cfg target.ElasticsearchArgs) error {
	if !cfg.Enable {
		return nil
	}

	if err := cfg.Validate(); err != nil {
		return err
	}

	s[config.NotifyESSubSys][esName] = config.KVS{
		config.KV{
			Key:   config.Enable,
			Value: config.EnableOn,
		},
		config.KV{

* There can be **multiple processes** of the **same program** running at the same time.

If you check out the "task manager" or "system monitor" (or similar tools) in your operating system, you will be able to see many of those processes running.

    {!> ../../../docs_src/response_model/tutorial002.py!}
    ```

Now, whenever a browser is creating a user with a password, the API will return the same password in the response.

In this case, it might not be a problem, because it's the same user sending the password.

But if we use the same model for another *path operation*, we could be sending our user's passwords to every client.

!!! danger

## Password hashing

"Hashing" means converting some content (a password in this case) into a sequence of bytes (just a string) that looks like gibberish.

Whenever you pass exactly the same content (exactly the same password) you get exactly the same gibberish.

But you cannot convert from the gibberish back to the password.

### Why use password hashing

This will be especially useful when you use it in a **large code base** where you use **the same dependencies** over and over again in **many *path operations***.

## To `async` or not to `async`

As dependencies will also be called by **FastAPI** (the same as your *path operation functions*), the same rules apply while defining your functions.

Linux containers run using the same Linux kernel of the host (machine, virtual machine, cloud server, etc). This just means that they are very lightweight (compared to full virtual machines emulating an entire operating system).