## Prerequisites

Configure and install keycloak server by following [Keycloak Installation Guide](https://www.keycloak.org/docs/latest/server_installation/#installing-the-software).
For a quick installation, docker-compose reference configs are also available on the [Keycloak GitHub](https://github.com/keycloak/keycloak-containers/tree/main/docker-compose-examples).

rm -rf /tmp/xl

if [ ! -f ./mc ]; then
	wget --quiet -O mc https://dl.minio.io/client/mc/release/linux-amd64/mc &&
		chmod +x mc
fi

if [ ! -f ./kes ]; then
	wget --quiet -O kes https://github.com/minio/kes/releases/latest/download/kes-linux-amd64 &&
		chmod +x kes
fi

if ! openssl version &>/dev/null; then
	apt install openssl || sudo apt install opensssl
fi

# Start KES Server
(./kes server --dev 2>&1 >kes-server.log) &

/// note | "Примечание"

При объявлении <a href="https://docs.pydantic.dev/latest/concepts/types/#unions" class="external-link" target="_blank">`Union`</a>, сначала указывайте наиболее детальные типы, затем менее детальные. В примере ниже более детальный `PlaneItem` стоит перед `CarItem` в `Union[PlaneItem, CarItem]`.

/// note

XML response for this API is similar to [AWS STS AssumeRoleWithWebIdentity](https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRoleWithWebIdentity.html#API_AssumeRoleWithWebIdentity_ResponseElements)

### Errors

XML error response for this API is similar to [AWS STS AssumeRoleWithWebIdentity](https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRoleWithWebIdentity.html#API_AssumeRoleWithWebIdentity_Errors)

/// tip

যখন আপনি `Optional` বা `Union[Something, None]` ব্যবহার করেন এবং কোনো ডিফল্ট মান না থাকে, Pydantic-এর একটি বিশেষ আচরণ রয়েছে, আপনি Pydantic ডকুমেন্টেশনে [Required Optional fields](https://docs.pydantic.dev/latest/concepts/models/#required-optional-fields) সম্পর্কে আরও পড়তে পারেন।

///

## মেটাডাটা অ্যানোটেশন সহ টাইপ হিন্টস

/// tip

Pydantic ✔️ 🎁 🎭 🕐❔ 👆 ⚙️ `Optional` ⚖️ `Union[Something, None]` 🍵 🔢 💲, 👆 💪 ✍ 🌅 🔃 ⚫️ Pydantic 🩺 🔃 <a href="https://docs.pydantic.dev/latest/concepts/models/#required-optional-fields" class="external-link" target="_blank">✔ 📦 🏑</a>.

///

## 🆎 🔑 **FastAPI**

**FastAPI** ✊ 📈 👫 🆎 🔑 📚 👜.

⏮️ **FastAPI** 👆 📣 🔢 ⏮️ 🆎 🔑 &amp; 👆 🤚:

* <a href="https://docs.pydantic.dev/latest/usage/pydantic_settings/" target="_blank"><code>pydantic-settings</code></a> - ayar yönetimi için.
* <a href="https://docs.pydantic.dev/latest/usage/types/extra_types/extra_types/" target="_blank"><code>pydantic-extra-types</code></a> - Pydantic ile birlikte kullanılabilecek ek tipler için.

/// check | "**FastAPI** inspirado para"

Usar código para definir "schemas" que forneçam, automaticamente, tipos de dados e validação.

///

### <a href="https://webargs.readthedocs.io/en/latest/" class="external-link" target="_blank">Webargs</a>

Outro grande recurso necessário pelas APIs é a <abbr title="ler e converter para dados Python">análise</abbr> de dados vindos de requisições.

* <a href="https://docs.pydantic.dev/latest/usage/pydantic_settings/" target="_blank"><code>pydantic-settings</code></a> - für die Verwaltung von Einstellungen.
* <a href="https://docs.pydantic.dev/latest/usage/types/extra_types/extra_types/" target="_blank"><code>pydantic-extra-types</code></a> - für zusätzliche Typen, mit Pydantic zu verwenden.