Type of clients

type-of-clients.ts

class ScrapingClient extends AbstractAggregationClient {
  //
  // Extending life cycle hooks
  //

  protected beforeAggregation(params): void {
    // Calling superclass implementation to do some common preparation
    super.beforeAggregation(params);

    // Initialize Chrome instance for scraping
    // Initialize file system for storing debug data
  }

  protected afterAggregation(params): void {
    // Upload debug data to AWS S3
    // Remove debug data from file system
    // Cleanup Chrome instance

    // Calling superclass implementation to do some common cleanup
    super.afterAggregation(params);
  }
  
  protected onError(params, error): AggregationResult {
    // Default error handling for scraping clients
    if (error.message === "Timeout") {
      return new AggregationResult(ResultCode.SCRAPING_TIMEOUT);
    }

    // Fallback to the superclass implementation for other type of errors
    return super.onError(params, error);
  }

  //
  // Other utility methods for scraping
  //
}

class ApiClient extends AbstractAggregationClient {
  //
  // Extending life cycle hooks
  //
  
  protected onError(params, error): AggregationResult {
    // Default error handling for API clients. Handling common API status codes
    if (error.response.statusCode === 500) {
      return new AggregationResult(ResultCode.ERROR_FROM_SAAS);
    }

    if (error.response.statusCode === 401) {
      return new AggregationResult(ResultCode.INCORRECT_CREDENTIALS_GIVEN);
    }

    // Fallback to the superclass implementation for other type of errors
    return super.onError(params, error);
  }

  //
  // Other utility methods for calling SaaS APIs
  //
}

class GitHubClient extends ApiClient {
  protected getAccountsImpl(): AggregationResult {
    // GitHub getAccounts logic
  }

  protected onError(params, error): AggregationResult {
    // Handle GitHub specific errors

    // Fallback to the superclass implementation for common errors
    return super.onError(params, error);
  }
}