rebell-core

Core for using rebell framework, including logs, decorator, middleware, message

Route

core/decorator/route.decorator.ts is decorator for set route handler express if route decorator is empty the route will be using function name endpoint will be generate using path folder name

example:

• app
  • test

endpoint will be set api/test

• GET

  example:

  class TestController {
  
    @Get() //Default parameter when not declare create endpoint using method Name
    public async getAllTest(req: Request, res: Response, next: NextFunction) {
      res.json({ message: 'OK'})
    }
  }

• POST

  example:

  class TestController {
  
    @Post() //Default parameter when not declare create endpoint using method Name
    public async postTest(req: Request, res: Response, next: NextFunction) {
      res.json({ message: 'OK'})
    }
  }

• DELETE

  example:

  class TestController {
  
    @Delete() //Default parameter when not declare create endpoint using method Name
    public async deleteTest(req: Request, res: Response, next: NextFunction) {
      res.json({ message: 'OK'})
    }
  }

• OPTIONS

  example:

  class TestController {
  
    @Options() //Default parameter when not declare create endpoint using method Name
    public async optionsTest(req: Request, res: Response, next: NextFunction) {
      res.json({ message: 'OK'})
    }
  }

• PUT

  example:

  class TestController {
  
    @Put() //Default parameter when not declare create endpoint using method Name
    public async putTest(req: Request, res: Response, next: NextFunction) {
      res.json({ message: 'OK'})
    }
  }

core/decorator/request.decorator.ts is decorator for validate data for valid request data, in this function run check validate Body, Query and validating using schema AJV

• ValidateBody

  example:

  class TestController {
  
    @ValidateBody(Schema) //Default parameter when not declare create endpoint using method Name
    public async postTest(req: Request, res: Response, next: NextFunction) {
      res.json({ message: 'OK'})
    }
  }

• ValidateQuery

  example:

  class TestController {
  
    @ValidateQuery(Schema) //Default parameter when not declare create endpoint using method Name
    public async postTest(req: Request, res: Response, next: NextFunction) {
      res.json({ message: 'OK'})
    }
  }

Middleware

core/middleware.ts reference from Express Middleware for create response handler

• loggerMiddleware

 /**
  * 
  * this is loggerMiddleware for logging request handlers
  * 
  * @param request : express request
  * @param response  : express response
  * @param next : express next function
  */
 public async loggerMiddleware(request: Request, response: Response, next: NextFunction): Promise<void> {
   logger.debug(`Run ${request.path}`);
   logger.info(`Request ${request.path}`, JSON.stringify({
     path: request.path,
     method: request.method,
     data: { ...request.body, ...request.query, ...request.params }
   }));
   next()
 }

• responseMiddleware

 /**
  * 
  * This is responseMiddleware for intercepting response handlers from controller
  * This value is dynamic, you can modify in result if not throw to exception
  * 
  * @param request : express request
  * @param response  : express response
  * @param next : express next function
  */
 public async responseMiddleware(request: Request, response: Response, next: NextFunction): Promise<void>  {
   const oldJSON = response.json;
   response.json = (data: any = {
     statusCode: EHttpStatusCode.OK,
     status: EStatus.SUCCESS,
     message: ESuccessMessage.FETCH
   }): any => {
     data = {
       statusCode: EHttpStatusCode.OK,
       status: EStatus.SUCCESS,
       message: ESuccessMessage.FETCH,
       ...data
     }
     logger.info(`Response ${request.path}`, JSON.stringify(data))
     if (data && data.status === EStatus.FAILED)
       return oldJSON.call(response.status(data.statusCode), {
         status: data.status,
         message: data.message,
         errorCode: data.errorCode,
         detail: data.detail
       } as IResponseTypes)
     else
       return oldJSON.call(response.status(data.statusCode), {
         status: data.status,
         message: data.message,
         detail: data.detail
       } as IResponseTypes);

   }
   next()
 }

• errorMiddleware

 /**
  * 
  * This is errorMiddleware for logging errors response from controller and next to responseMiddleware
  * This value is dynamic, you can modify in exception Error
  * 
  * @param error : any
  * @param request : express request
  * @param response  : express response
  * @param next : express next function
  */
 public async errorMiddleware(error: any | '' | null | undefined, request: Request, response: Response, next: NextFunction): Promise<any>  {
   response.json({
     statusCode: EHttpStatusCode.INTERNAL_SERVER_ERROR,
     status: EStatus.FAILED,
     message: error.message,
     errorCode: error.errorCode,
     detail: error.detail
   } as IResponseTypes)
 }

Response

core/type.ts is interface for declare all type used in this app

export interface IResponseTypes {
  statusCode: EHttpStatusCode;
  status: EStatus;
  message: ESuccessMessage | EErrorMessage;
  errorMessage: any;
  errorCode: any;
  detail?: any;
}

this interface use in the response.json() for create response success

example:

const result: IResponseTypes = {
  statusCode: HttpStatusCode.OK,
  status: Status.SUCCESS,
  message: Message.FETCH 
}
response.json(result)

and use next() for create response error

example:

const result: IResponseTypes = {
  statusCode: HttpStatusCode.INTERNAL_SERVER_ERROR,
  status: Status.FAILED,
  message: Message.NOT_HANDLED,
  detail: error.message
}
next(result)

Logs

core/logs.ts function for create logging

Name	Function
logger.silly	logger.silly()
logger.debug	logger.debug()
logger.trace	logger.trace()
logger.info	logger.info()
logger.warn	logger.warn()
logger.error	logger.error()
logger.fatal	logger.fatal()