type-graphql#getMetadataStorage TypeScript Examples

The following examples show how to use type-graphql#getMetadataStorage. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: prepare-options.service.ts    From typegraphql-nestjs with MIT License 5 votes vote down vote up 
prepareOptions<TOptions extends TypeGraphQLFeatureModuleOptions>(
    featureModuleToken: string,
    globalMiddlewares: Middleware<any>[] = [],
  ) {
    const globalResolvers = getMetadataStorage().resolverClasses.map(
      metadata => metadata.target,
    );
    const globalMiddlewareClasses = globalMiddlewares.filter(
      it => it.prototype,
    ) as Function[];

    const featureModuleOptionsArray: TOptions[] = [];
    const resolversClasses: ClassType[] = [];
    const providersMetadataMap = new Map<Function, InstanceWrapper<any>>();

    for (const module of this.modulesContainer.values()) {
      for (const provider of module.providers.values()) {
        if (
          typeof provider.name === "string" &&
          provider.name.includes(featureModuleToken)
        ) {
          featureModuleOptionsArray.push(provider.instance as TOptions);
        }
        if (globalResolvers.includes(provider.metatype)) {
          providersMetadataMap.set(provider.metatype, provider);
          resolversClasses.push(provider.metatype as ClassType);
        }
        if (globalMiddlewareClasses.includes(provider.metatype)) {
          providersMetadataMap.set(provider.metatype, provider);
        }
      }
    }

    const orphanedTypes = flatten(
      featureModuleOptionsArray.map(it => it.orphanedTypes),
    );
    const container: ContainerType = {
      get: (cls, { context }) => {
        let contextId = context[REQUEST_CONTEXT_ID];
        if (!contextId) {
          contextId = ContextIdFactory.create();
          context[REQUEST_CONTEXT_ID] = contextId;
        }
        const providerMetadata = providersMetadataMap.get(cls)!;
        if (
          providerMetadata.isDependencyTreeStatic() &&
          !providerMetadata.isTransient
        ) {
          return this.moduleRef.get(cls, { strict: false });
        }
        return this.moduleRef.resolve(cls, contextId, { strict: false });
      },
    };

    return {
      resolversClasses,
      orphanedTypes,
      container,
      featureModuleOptionsArray,
    };
  }