第 11 章覆盖核心后端服务配置

Red Hat Developer Hub (RHDH)后端平台由多个已封装的核心服务组成。RHDH 后端在初始化过程中静态安装这些默认核心服务。

使用动态插件功能将其安装为 BackendFeature 来自定义核心服务。

流程

通过在 Developer Hub app-config.yaml 配置文件中将对应的核心服务 ID 环境变量设置为 true，将 Developer Hub 配置为允许核心服务覆盖。

Expand

表 11.1. 环境变量和核心服务 ID
变量	覆盖相关服务
`ENABLE_CORE_AUTH_OVERRIDE`	`core.auth`
`ENABLE_CORE_CACHE_OVERRIDE`	`core.cache`
`ENABLE_CORE_ROOTCONFIG_OVERRIDE`	`core.rootConfig`
`ENABLE_CORE_DATABASE_OVERRIDE`	`core.database`
`ENABLE_CORE_DISCOVERY_OVERRIDE`	`core.discovery`
`ENABLE_CORE_HTTPAUTH_OVERRIDE`	`core.httpAuth`
`ENABLE_CORE_HTTPROUTER_OVERRIDE`	`core.httpRouter`
`ENABLE_CORE_LIFECYCLE_OVERRIDE`	`core.lifecycle`
`ENABLE_CORE_LOGGER_OVERRIDE`	`core.logger`
`ENABLE_CORE_PERMISSIONS_OVERRIDE`	`core.permissions`
`ENABLE_CORE_ROOTHEALTH_OVERRIDE`	`core.rootHealth`
`ENABLE_CORE_ROOTHTTPROUTER_OVERRIDE`	`core.rootHttpRouter`
`ENABLE_CORE_ROOTLIFECYCLE_OVERRIDE`	`core.rootLifecycle`
`ENABLE_CORE_SCHEDULER_OVERRIDE`	`core.scheduler`
`ENABLE_CORE_USERINFO_OVERRIDE`	`core.userInfo`
`ENABLE_CORE_URLREADER_OVERRIDE`	`core.urlReader`
`ENABLE_EVENTS_SERVICE_OVERRIDE`	`events.service`

将自定义核心服务安装为 BackendFeature，如下例所示：

处理传入 HTTP 请求的 BackendFeature 中间件功能示例

// Create the BackendFeature
export const customRootHttpServerFactory: BackendFeature =
  rootHttpRouterServiceFactory({
    configure: ({ app, routes, middleware, logger }) => {
      logger.info(
        'Using custom root HttpRouterServiceFactory configure function',
      );
      app.use(middleware.helmet());
      app.use(middleware.cors());
      app.use(middleware.compression());
      app.use(middleware.logging());
      // Add a the custom middleware function before all
      // of the route handlers
      app.use(addTestHeaderMiddleware({ logger }));
      app.use(routes);
      app.use(middleware.notFound());
      app.use(middleware.error());
    },
  });

// Export the BackendFeature as the default entrypoint
export default customRootHttpServerFactory;

// Create the BackendFeature
export const customRootHttpServerFactory: BackendFeature =
  rootHttpRouterServiceFactory({
    configure: ({ app, routes, middleware, logger }) => {
      logger.info(
        'Using custom root HttpRouterServiceFactory configure function',
      );
      app.use(middleware.helmet());
      app.use(middleware.cors());
      app.use(middleware.compression());
      app.use(middleware.logging());
      // Add a the custom middleware function before all
      // of the route handlers
      app.use(addTestHeaderMiddleware({ logger }));
      app.use(routes);
      app.use(middleware.notFound());
      app.use(middleware.error());
    },
  });

// Export the BackendFeature as the default entrypoint
export default customRootHttpServerFactory;

Copy to Clipboard

Toggle word wrap

+ 在上例中，因为 BackendFeature 覆盖 HTTP 路由器服务的默认实现，您必须将 ENABLE_CORE_ROOTHTTPROUTER_OVERRIDE 环境变量设置为 true，以便 Developer Hub 不会自动安装默认实施。

第 11 章覆盖核心后端服务配置

学习

尝试、购买和销售

社区

关于红帽文档

让开源更具包容性

關於紅帽

Theme

Red Hat legal and privacy links

Red Hat legal and privacy links

第 11 章 覆盖核心后端服务配置

学习

尝试、购买和销售

社区

关于红帽文档

让开源更具包容性

關於紅帽

Theme

Red Hat legal and privacy links

Red Hat legal and privacy links

第 11 章覆盖核心后端服务配置