BrainTreeService.java

package com.clouddemo.kjoshi.restep.service;

import com.braintreegateway.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import javax.validation.ValidationException;
import java.math.BigDecimal;

@Service
public class BrainTreeService {


    private static String MERCHANT_ID = System.getenv("MERCHANT_ID");
    private static String PRIVATE_KEY = System.getenv("PRIVATE_KEY");
    private static String PUBLIC_KEY = System.getenv("PUBLIC_KEY");

    private static final Logger logger = LoggerFactory.getLogger(BrainTreeService.class);

    private static BraintreeGateway gateway = new BraintreeGateway(Environment.SANDBOX,MERCHANT_ID,PUBLIC_KEY,PRIVATE_KEY);

    public String getClientTocken(){
        if(StringUtils.isEmpty(MERCHANT_ID)||StringUtils.isEmpty(PRIVATE_KEY)||StringUtils.isEmpty(PUBLIC_KEY)){
            logger.error("Setup issue..");
            throw new ValidationException("Setup not correct");
        }else{
            String clientToken = gateway.clientToken().generate();
            logger.info("Client token generated:{}",clientToken);
            return clientToken;
        }
    }

    public Result performTransaction(Double amt,String nonce){
        logger.info("Submitting transaction");
        TransactionRequest req = new TransactionRequest();
        req.amount(new BigDecimal(amt)).paymentMethodNonce(nonce).options().submitForSettlement(true).done();
        Result<Transaction> txn = gateway.transaction().sale(req);
        return txn;
    }
}