### Einbringen von Abhängigkeiten (Dependency Injection)

FastAPI enthält ein extrem einfach zu verwendendes, aber extrem mächtiges <abbr title='Dependency Injection – Einbringen von Abhängigkeiten: Auch bekannt als Komponenten, Resourcen, Dienste, Dienstanbieter'><strong>Dependency Injection</strong></abbr> System.

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.model.plugin;

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

import org.apache.maven.api.xml.XmlNode;
import org.apache.maven.model.Model;
import org.apache.maven.model.ReportPlugin;
import org.apache.maven.model.ReportSet;

 * under the License.
 */
package org.apache.maven.execution.scope;

import java.lang.annotation.Retention;
import java.lang.annotation.Target;

import com.google.inject.ScopeAnnotation;

import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

/**

alertmanager:
  enabled: false
prometheus-pushgateway:
  enabled: false
kube-state-metrics:
  enabled: false
prometheus-node-exporter:
  enabled: false
server:
  podLabels:
    sidecar.istio.io/inject: "false"
  persistentVolume:
    enabled: false
  # Use port 9090 to match Istio documentation
  service:
    servicePort: 9090
  readinessProbeInitialDelay: 0
  # Speed up scraping a bit from the default

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.artifact.repository.layout;

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

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.handler.ArtifactHandler;
import org.apache.maven.artifact.metadata.ArtifactMetadata;

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.artifact.deployer;

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

import java.util.Collections;
import java.util.List;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.repository.ArtifactRepository;

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.configuration.internal;

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

import org.codehaus.plexus.classworlds.realm.ClassRealm;
import org.codehaus.plexus.component.configurator.BasicComponentConfigurator;

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.execution;

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

import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;

import org.apache.maven.project.MavenProject;
import org.slf4j.Logger;

import org.gradle.api.tasks.OutputFile;
import org.gradle.api.tasks.TaskAction;
import org.gradle.util.GradleVersion;
import org.gradle.workers.WorkQueue;
import org.gradle.workers.WorkerExecutor;

import javax.inject.Inject;
import java.io.File;
import java.net.URISyntaxException;
import java.security.CodeSource;
import java.security.ProtectionDomain;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;

Es erreicht etwas Ähnliches wie Flask-apispec.

Es verfügt über ein integriertes Dependency Injection System, welches von Angular 2 inspiriert ist. Erfordert ein Vorab-Registrieren der „Injectables“ (wie alle anderen Dependency Injection Systeme, welche ich kenne), sodass der Code ausschweifender wird und es mehr Codeverdoppelung gibt.