SoapUI hmac_sha256 code to create a SAS SharedAccessSignature for Azure Service Bus Queue

SoapUI_hmac_sha256.groovy

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import java.security.InvalidKeyException;

def hmac_sha256(String secretKey, String data) {
    def mac = Mac.getInstance("HmacSHA256");
    def secretKeySpec = new SecretKeySpec(secretKey.getBytes(), "HmacSHA256");

    mac.init(secretKeySpec);
    return mac.doFinal(data.getBytes());
}

def createSharedAccessToken(String uri, String saName, String base64EncodedSharedAccessKey) {
    def encodedUri = URLEncoder.encode(uri);
    def now = new Date();
    def onedayInSeconds = 60 * 60 * 24;
    def ttl = Math.round(now.getTime() / 1000) + onedayInSeconds;
    def urlWithTTL = encodedUri + '\n' + ttl;
    
    def encoded = hmac_sha256(base64EncodedSharedAccessKey, urlWithTTL).encodeBase64().toString();

    def signature = URLEncoder.encode(encoded);

    return 'SharedAccessSignature sig=' + signature + '&se=' + ttl + '&skn=' + saName + '&sr=' + encodedUri;
}

def testSuite = testRunner.getTestCase().getTestSuite();
def uri = testSuite.getPropertyValue("endpoint");
def keyName = testSuite.getPropertyValue("sharedAccessKeyName");
def key = testSuite.getPropertyValue("sharedAccessKey");
log.info("uri=" + uri);
log.info("keyName=" + keyName);
log.info("key=" + key);

def sas = createSharedAccessToken(uri, keyName, key);
log.info("SAS=" + sas);
context.setProperty("SAS", sas);