Blockchain as a Service:Error messages

If the result of a transaction shows that the transaction is executed incorrectly, you can locate the cause based on the error code.

• The errorCode field in response indicates the cause of a transaction sending or execution error.
• When the sent request is transaction-related, you can obtain a more detailed error code about the transaction execution error based on the transaction return value.

The following shows a contract deployment example.

// Synchronous execution.
DeployContractResponse response = sdk.getContractService().deployContract(request);
// Indicates whether the transaction is sent successfully. If the transaction fails to be sent, use result.getErrorCode() to obtain the error code.
assertTrue(response.isSuccess());
// 0 indicates successful transaction execution, and a non-zero value indicates a transaction execution failure. Locate the cause from the ErrorCode object based on the result value.
assertEquals(0, response.getTransactionReceipt().getResult());
// Asynchronous execution.
int result = sdk.getContractService().asyncDeployContract(
    request,
    new IAsyncCallback() {
      @Override
      public void onResponse(int errorCode, Response response) {
        // If errorCode is 0, a response has been received from the platform. 20072 indicates a message timeout. 30018 indicates that the number of messages exceeds the maximum queue size. (Set a value for NetworkOption.threadPoolQueueSize as required.)
        assertEquals(0, errorCode);  
        // Indicates whether the transaction is sent successfully. If the transaction fails to be sent, use result.getErrorCode() to obtain the error code.
        assertTrue(response.isSuccess());
        // 0 indicates successful transaction execution, and a non-zero value indicates a transaction execution failure. Locate the cause from the ErrorCode object based on the result value.
        // The response to the callback needs to be converted into the response to the request. For example, DeployContractRequest corresponds to DeployContractResponse.
        assertEquals(0, deployContractResponse.getTransactionReceipt().getResult());
      }
});