@nestjs/core#createContextId TypeScript Examples

The following examples show how to use @nestjs/core#createContextId. 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: bull.explorer.ts    From nestjs-bullmq with MIT License 6 votes vote down vote up 
handleProcessor(
    instance: object,
    key: string,
    queue: Queue,
    moduleRef: Module,
    isRequestScoped: boolean,
    options: ProcessOptions = {},
  ) {
    let processor: Processor<any, void, string>;

    if (isRequestScoped) {
      processor = async (...args: unknown[]) => {
        const contextId = createContextId();

        if (this.moduleRef.registerRequestByContextId) {
          // Additional condition to prevent breaking changes in
          // applications that use @nestjs/bull older than v7.4.0.
          const jobRef = args[0];
          this.moduleRef.registerRequestByContextId(jobRef, contextId);
        }

        const contextInstance = await this.injector.loadPerContext(
          instance,
          moduleRef,
          moduleRef.providers,
          contextId,
        );
        return contextInstance[key].call(contextInstance, ...args);
      };
    } else {
      processor = instance[key].bind(instance);
    }

    return new Worker(
      queue.name,
      processor,
      Object.assign(queue.opts || {}, options),
    );
  }
Example #2
Source File: loaders-explorer.service.ts    From nestjs-mercurius with MIT License 4 votes vote down vote up 
private createContextCallback<T extends Record<string, any>>(
    instance: T,
    prototype: any,
    wrapper: InstanceWrapper,
    moduleRef: Module,
    resolver: any,
    isRequestScoped: boolean,
    transform: Function = identity,
  ) {
    const paramsFactory = this.gqlParamsFactory;
    const fieldResolverEnhancers = this.gqlOptions.fieldResolverEnhancers || [];

    const contextOptions = {
      guards: fieldResolverEnhancers.includes('guards'),
      filters: fieldResolverEnhancers.includes('filters'),
      interceptors: fieldResolverEnhancers.includes('interceptors'),
    };

    if (isRequestScoped) {
      const loaderCallback = async (...args: any[]) => {
        const gqlContext = paramsFactory.exchangeKeyForValue(
          GqlParamtype.CONTEXT,
          undefined,
          args,
        );
        let contextId: ContextId;
        if (gqlContext && gqlContext[REQUEST_CONTEXT_ID]) {
          contextId = gqlContext[REQUEST_CONTEXT_ID];
        } else if (
          gqlContext &&
          gqlContext.req &&
          gqlContext.req[REQUEST_CONTEXT_ID]
        ) {
          contextId = gqlContext.req[REQUEST_CONTEXT_ID];
        } else {
          contextId = createContextId();
          Object.defineProperty(gqlContext, REQUEST_CONTEXT_ID, {
            value: contextId,
            enumerable: false,
            configurable: false,
            writable: false,
          });
        }

        this.registerContextProvider(gqlContext, contextId);
        const contextInstance = await this.injector.loadPerContext(
          instance,
          moduleRef,
          moduleRef.providers,
          contextId,
        );
        const callback = this.externalContextCreator.create(
          contextInstance,
          transform(contextInstance[resolver.methodName]),
          resolver.methodName,
          PARAM_ARGS_METADATA,
          paramsFactory,
          contextId,
          wrapper.id,
          contextOptions,
          'graphql',
        );
        return callback(...args);
      };

      return this.registerFieldMiddlewareIfExists(
        loaderCallback,
        instance,
        resolver.methodName,
      );
    }

    const loaderCallback = this.externalContextCreator.create(
      instance,
      prototype[resolver.methodName],
      resolver.methodName,
      PARAM_ARGS_METADATA,
      paramsFactory,
      undefined,
      undefined,
      contextOptions,
      'graphql',
    );

    return this.registerFieldMiddlewareIfExists(
      loaderCallback,
      instance,
      resolver.methodName,
    );
  }