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chaincode-test.go
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chaincode-test.go
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package main
import (
"github.com/hyperledger/fabric/core/chaincode/shim"
pb "github.com/hyperledger/fabric/protos/peer"
"encoding/json"
"fmt"
"github.com/op/go-logging"
"time"
)
var logger = logging.MustGetLogger("chaincode-test")
type SimpleChaincode struct {
}
const STATE_OPEN = 0
const STATE_PAID = 1
type AccountsHolder struct {
Accounts []string `json:"accounts"`
}
type Payment struct {
Status int `json:"status"`
Amount string `json:"amount"`
Owner string `json:"owner"`
AccountKey string `json:"acct_key"`
Maturity string `json:"maturity"`
PaidAt string `json:"paid_at"`
}
//====================================================================================================================
// Inicializa o chaincode
//====================================================================================================================
func (t *SimpleChaincode) Init(stub shim.ChaincodeStubInterface) pb.Response {
var accountsHolder AccountsHolder
bytes, err := json.Marshal(accountsHolder)
if err != nil {
return shim.Error("Error creating AccountsHolder record")
}
err = stub.PutState("accounts", bytes)
return shim.Success(nil)
}
//====================================================================================================================
// Roteamento de funçoes
//====================================================================================================================
func (t *SimpleChaincode) Invoke(stub shim.ChaincodeStubInterface) pb.Response {
function, args := stub.GetFunctionAndParameters()
if function == "register_payment" {
logger.Info("Register Payment ", args)
return t.RegisterPayment(stub, args)
} else if function == "payment_details" {
logger.Info("Payment Details ", args)
return t.GetPaymentDetails(stub, args[0])
} else if function == "make_payment" {
logger.Info("Make payment ", args)
return t.MakePayment(stub, args[0])
}
return shim.Success(nil)
}
func (t *SimpleChaincode) GetPaymentDetails(stub shim.ChaincodeStubInterface, accountKey string) pb.Response {
bytes, err := stub.GetState(accountKey)
if err != nil {
return shim.Error("Error when quering records")
}
return shim.Success(bytes)
}
func (t *SimpleChaincode) MakePayment(stub shim.ChaincodeStubInterface, accountKey string) pb.Response {
var payment Payment
bytes, err := stub.GetState(accountKey)
err = json.Unmarshal(bytes, &payment)
if payment.Status == STATE_PAID {
return shim.Error("It was Paid")
}
if err != nil {
return shim.Error("Error when unmarshal json")
}
payment.PaidAt = time.Now().Format("2006-01-02")
payment.Status = STATE_PAID
bytes, err = json.Marshal(payment)
if err != nil {
return shim.Error("Error when marshal json")
}
err = stub.PutState(accountKey, bytes)
if err != nil {
return shim.Error("Error when put state to the block")
}
return shim.Success(nil)
}
func (chaincode *SimpleChaincode) RegisterPayment(stub shim.ChaincodeStubInterface, args []string) pb.Response {
payment := Payment{
Status: STATE_OPEN, Amount: args[0],
Owner: args[1], AccountKey: args[2],
Maturity: args[3]}
bytes, err := json.Marshal(payment)
if err != nil {
fmt.Printf("register_payment: error converting payment record: %s", err);
return shim.Error("register_payment: error converting payment record")
}
err = stub.PutState(args[2], bytes)
if err != nil {
fmt.Printf("register_payment: error storing payment record: %s", err);
return shim.Error("register_payment: error storing payment record")
}
return shim.Success(nil)
}
func main() {
err := shim.Start(new(SimpleChaincode))
if err != nil {
fmt.Printf("Error starting Simple chaincode: %s", err)
}
}