[WIP]: Smart contract to store graduating student details on hyperledger fabric

degree-on-blockchain.go

package main

import (
	"bytes"
	"encoding/json"
	"fmt"
	"strconv"

	"github.com/hyperledger/fabric/core/chaincode/shim"
	sc "github.com/hyperledger/fabric/protos/peer"
)

type SmartContract struct {

}

type graduation struct {
  RollNo string `json:"rollNo"`
  Name string `json:"name"`
  Year string `json:"year"`
  Cpi string `json:"cpi"`
  Degree string `json:"degree"`
  Major string `json:"major"`   //Nil if no major
	Minor string `json:"minor"`   //Nil if no minor
  Minor string `json:"minor"`   //Nil if no 2nd minor
}

/*
 * The Init method is called when the Smart Contract "fabcar" is instantiated by the blockchain network
 * Best practice is to have any Ledger initialization in separate function -- see initLedger()
 */
func (s *SmartContract) Init(APIstub shim.ChaincodeStubInterface) sc.Response {
	return shim.Success(nil)
}

func (s *SmartContract) Invoke(APIstub shim.ChaincodeStubInterface) sc.Response{

}

func (s *SmartContract) queryStudent(APIstub shim.ChaincodeStubInterface, args []string) sc.Response {

	if len(args) != 1 {
		return shim.Error("Incorrect number of arguments. Expecting Roll No. only")
	}

	carAsBytes, _ := APIstub.GetState(args[0])
	return shim.Success(carAsBytes)
}

func (s *SmartContract) addStudent(APIstub ChaincodeStubInterface, args []string) sc.Response {
  if len(args) != 8 {
    return shim.Error("Incorrect number of arguments. Expecting at least 5 arguments")
  }

  var student = graduation{
    RollNo: args[0], Name: args[1], Year: args[2], Cpi: args[3],
    Degree: args[4], Major: args[5], Minor: args[6],  Minor: args[7]}

  studentAsBytes, _ := json.Marshal(student)
  APIstub.PutState(studentAsBytes)

  return shim.Success(nil)
}

// func(s *SmartContract) updateDetail