daanporon / fabric-shim Goto Github PK

const shim = require('fabric-shim');

const Chaincode = class {
	async Init(stub) {
		// use the instantiate input arguments to decide initial chaincode state values

		// save the initial states
		await stub.putState(key, Buffer.from(aStringValue));

		return shim.success(Buffer.from('Initialized Successfully!'));
	}

	async Invoke(stub) {
		// use the invoke input arguments to decide intended changes

		// retrieve existing chaincode states
		let oldValue = await stub.getState(key);

		// calculate new state values and saves them
		let newValue = oldValue + delta;
		await stub.putState(key, Buffer.from(newValue));

		return shim.success(Buffer.from(newValue.toString()));
	}
};

shim.start(new Chaincode());