### Injection de dépendances

FastAPI contient un système simple mais extrêmement puissant d'<abbr title='aussi connus sous le nom de "composants", "ressources", "services", "providers"'><strong>Injection de Dépendances</strong></abbr>.

* Même les dépendances peuvent avoir des dépendances, créant une hiérarchie ou un **"graph" de dépendances**
* Tout est **automatiquement géré** par le framework

import java.util.Collections;
import java.util.Locale;
import java.util.UUID;
import java.util.stream.Collectors;
import java.util.stream.Stream;

import org.apache.maven.api.Version;
import org.apache.maven.api.services.model.ModelVersionParser;
import org.eclipse.aether.util.version.GenericVersionScheme;
import org.junit.jupiter.api.Test;

import static java.util.stream.Collectors.toList;

 * other words, the model resolver is stateful and should not be reused across multiple model building requests.
 *
 * @deprecated use {@link org.apache.maven.api.services.ModelBuilder} instead
 */
@Deprecated(since = "4.0.0")
public interface ModelResolver {

    /**
     * Tries to resolve the POM for the specified coordinates.
     *

import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;

import java.util.List;
import java.util.Map;
import java.util.Objects;

import org.apache.maven.api.services.MessageBuilderFactory;
import org.apache.maven.cling.invoker.mvnenc.DefaultEncryptInvoker;
import org.codehaus.plexus.components.secdispatcher.DispatcherMeta;
import org.codehaus.plexus.components.secdispatcher.SecDispatcher;

			}
		})
	}
}

// Tests get local peer functionality, local peer is supposed to only return one entry per minio service.
// So it means that if you have say localhost:9000 and localhost:9001 as endpointArgs then localhost:9001
// is considered a remote service from localhost:9000 perspective.
func TestGetLocalPeer(t *testing.T) {
	tempGlobalMinioPort := globalMinioPort
	defer func() {

## Opinie

"_[...] I'm using **FastAPI** a ton these days. [...] I'm actually planning to use it for all of my team's **ML services at Microsoft**. Some of them are getting integrated into the core **Windows** product and some **Office** products._"

 * application data - do we need a dictionary for our applications like Apple does. We could easily
 * hook into this and this is the model we need to follow - how many of our REST services do not map
 * directory to a method in the application interface?
 *
 * - research extension points versus plugins
 *
 * from igor: two plugins A and B, both depend on the same library but use different versions, say

bookinfo.build:
	@prow/buildx-create
	@BOOKINFO_TAG=${BOOKINFO_VERSION} BOOKINFO_HUB=${HUB} samples/bookinfo/src/build-services.sh

bookinfo.push: MULTI_ARCH=true
bookinfo.push:
	@prow/buildx-create
	@BOOKINFO_TAG=${BOOKINFO_VERSION} BOOKINFO_HUB=${HUB} samples/bookinfo/src/build-services.sh --push

开发人员永远都不需要直接调用这些函数，这些函数是由框架（在此为 **FastAPI** ）调用的。

通过依赖注入系统，只要告诉 **FastAPI** *路径操作函数* 还要「依赖」其他在*路径操作函数*之前执行的内容，**FastAPI** 就会执行函数代码，并「注入」函数返回的结果。

其他与「依赖注入」概念相同的术语为：

* 资源（Resource）
* 提供方（Provider）
* 服务（Service）
* 可注入（Injectable）
* 组件（Component）

## **FastAPI** 插件

**依赖注入**系统支持构建集成和「插件」。但实际上，FastAPI 根本**不需要创建「插件」**，因为使用依赖项可以声明不限数量的、可用于*路径操作函数*的集成与交互。

					EnableIPv6:        cfg.InstallConfig.AmbientIPv6,
					TPROXYRedirection: cfg.InstallConfig.AmbientTPROXYRedirection,
				})
			if err != nil {
				return fmt.Errorf("failed to create ambient nodeagent service: %v", err)
			}

			ambientAgent.Start()
			defer ambientAgent.Stop()

			log.Info("Ambient node agent started, starting installer...")

		} else {