# Istio Agent

This document describes the internal architecture of Istio agent.

## High Level overview

![High Level overview](docs/overview.svg)

At a high level, the Istio agent acts as an intermediate proxy between Istiod and Envoy. This is done
at two levels. For distributing workload certificates, Envoy will send [SDS](https://www.envoyproxy.io/docs/envoy/latest/configuration/security/secret)

        require(statements.isNotEmpty())

        val parent = statements[0].parent as KtElement

        for (i in 1..<statements.size) {
            require(statements[i].parent == parent)
        }

        val firContainer = collectUseSiteContainers(parent, firResolveSession)?.lastOrNull()
        if (firContainer != null) {

## Log Targets

MinIO supports currently two target types

- console
- http

### Logging Console Target

Console target is on always and cannot be disabled.

### Logging HTTP Target

HTTP target logs to a generic HTTP endpoint in JSON format and is not enabled by default. To enable HTTP target logging you would have to update your MinIO server configuration using `mc admin config set` command.

Wie Sie im vorherigen Kapitel über [Deployment-Konzepte](concepts.md){.internal-link target=_blank} gesehen haben, gibt es mehrere Strategien, die Sie anwenden können.

Hier zeige ich Ihnen, wie Sie <a href="https://gunicorn.org/" class="external-link" target="_blank">**Gunicorn**</a> mit **Uvicorn Workerprozessen** verwenden.

!!! info

部署应用程序时，您可能希望进行一些**进程复制**，以利用**多核**并能够处理更多请求。

正如您在上一章有关[部署概念](concepts.md){.internal-link target=_blank}中看到的，您可以使用多种策略。

在这里我将向您展示如何将 <a href="https://gunicorn.org/" class="external-link" target="_blank">**Gunicorn**</a> 与 **Uvicorn worker 进程** 一起使用。

!!! info
    如果您正在使用容器，例如 Docker 或 Kubernetes，我将在下一章中告诉您更多相关信息：[容器中的 FastAPI - Docker](docker.md){.internal-link target=_blank}。

    private fun KtElement.getContainingDotQualifiedExpressionForSelectorExpression(): KtQualifiedExpression? {
        val parent = parent
        if (parent is KtDotQualifiedExpression && parent.selectorExpression == this) return parent
        if (parent is KtSafeQualifiedExpression && parent.selectorExpression == this) return parent
        return null
    }

    private fun createKtCall(
        psi: KtElement,

    const val TARGET_METHOD_UTF8 = ":method"
    const val TARGET_PATH_UTF8 = ":path"
    const val TARGET_SCHEME_UTF8 = ":scheme"
    const val TARGET_AUTHORITY_UTF8 = ":authority"

    @JvmField val RESPONSE_STATUS: ByteString = RESPONSE_STATUS_UTF8.encodeUtf8()

    @JvmField val TARGET_METHOD: ByteString = TARGET_METHOD_UTF8.encodeUtf8()

    @JvmField val TARGET_PATH: ByteString = TARGET_PATH_UTF8.encodeUtf8()

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    * Napisz mi, w jaki sposób korzystasz z FastAPI (uwielbiam o tym czytać).
    * Dowiedz się, gdy ogłoszę coś nowego lub wypuszczę nowe narzędzia.
    * Możesz także <a href="https://twitter.com/fastapi" class="external-link" target="_blank">śledzić @fastapi na Twitterze</a> (to oddzielne konto).

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