Weave Design document

Example

Args: {"function":"Car::createCar","Args":["CAR0"]}

// index.js

import shim = require('fabric-shim');
import { CarService } from './carservice';

const chaincode = new Weave()
   .use('Car', new CarService())

shim.start(chaincode);

// carservice.js
export class CarService {

  async createCar(stubHelper: StubHelper, args: string[]) {

    const verifiedArgs = await Helpers.checkArgs<{ key: string }>(args[0], Yup.object()
            .shape({
                key: Yup.string().required(),
            }));

        const car = await stubHelper.getStateAsObject(verifiedArgs.key); //get the car from chaincode state
        if (!car) {
            throw new ChaincodeError('Car does not exist');
        }

        return car;
  }

}

Features

Middleware

// index.js

import shim = require('fabric-shim');
import { logger } from './logger';

const chaincode = new Weave()
   .use('Car', new CarService())
   .use(logger)


// logger.js

export const logger = (stubHelper: StubHelper, args: string[], fcn: string, done: any) => {
   console.log("Executing function", fcn, "with args", args)
}