/// <summary>
/// 代理TransactionProducer实例的send方法
/// </summary>
/// <param name="message">Message实例</param>
/// <param name="parameter">parameter参数</param>
/// <returns>SendResultONS实例</returns>
public SendResultONS send(Message message, object parameter)
{
SendResultONS sendResultONS = null;
if (_producer != null)
{
ONSLocalTransactionExecuter executer = parameter as ONSLocalTransactionExecuter;
sendResultONS = _producer.send(message, executer);
}
return(sendResultONS);
}
/// <summary>
/// 上游生产者的实现rocketmq的核心方法，其中会由rocketmq自动间接调用AbstractTransactionProducerService实例的InternalProduce方法
/// </summary>
/// <param name="model">接收的参数</param>
/// <returns>事务执行结果</returns>
public bool Process(T model)
{
if (_AliyunOnsIsAllowedToSend != "1")
{
return(false);
}
string requestTraceId = "";
string key = this.CreateMessageKey();
string failureReason = "";
string body = "";
bool accomplishment = false;
int producedTimes = 0;
int errorTimes = 0;
try
{
//获取requestTraceId
requestTraceId = this.GetRequestTraceId();
//序列化实体，即消息正文
body = model.GetType().Name.ToLower() == "system.string" ? model.ToString() : JsonConvert.SerializeObject(model);
//防止中文乱码
body = Base64Util.Encode(body);
//获取生产者
IONSProducer producer = GetProducer();
//Message实体的body不能为空
Message message = new Message(this.Topic, this.Tag, body);
message.setKey(key);
message.putUserProperties("type", this.MessageType.ToString());
message.putUserProperties("requestTraceId", requestTraceId);
//获取InternalProcess方法
MethodInfo methodInfo = this.GetType().GetMethod("InternalProcess", BindingFlags.NonPublic | BindingFlags.Instance);
string executerMethodName = methodInfo.ReflectedType.FullName + "." + methodInfo.Name;
string checkerMethodName = methodInfo.ReflectedType.FullName + "." + methodInfo.Name;
//将方式实例和方式实例的参数都存到消息的属性中去。
//message.putUserProperties("executerMethodParameter", data);
message.putUserProperties("executerMethod", executerMethodName);
//message.putUserProperties("checkerMethodParameter", data);
message.putUserProperties("checkerMethod", checkerMethodName);
//方式实例字典中不存在的话，则试图新增到字典中去
if (!ONSHelper.ExecuterMethodDictionary.ContainsKey(executerMethodName))
{
ONSHelper.ExecuterMethodDictionary.TryAdd(executerMethodName, methodInfo);
}
if (!ONSHelper.CheckerMethodDictionary.ContainsKey(checkerMethodName))
{
ONSHelper.CheckerMethodDictionary.TryAdd(checkerMethodName, methodInfo);
}
//实例化LocalTransactionExecuter对象
ONSLocalTransactionExecuter executer = new ONSLocalTransactionExecuter();
//定义消息结果对象
SendResultONS sendResultONS = null;
//尝试发送
sendResultONS = TryToSend(producer, message, executer, key, errorTimes);
//判断结果，一般走不到这步，因为如果发送有问题会直接抛出异常的
if (sendResultONS == null)
{
throw new Exception("发送TRAN消息失败。key=" + key);
}
//更新发送状态
accomplishment = true;
//更新消费次数
producedTimes = 1;
}
catch (Exception e)
{
failureReason = "发送TRAN消息，key=" + key + "，在TranProducerService中(非Executer或Checker中)，捕获异常" + e.ToString();
LogData(key, body, "", "", failureReason, accomplishment, producedTimes, false);
return(false);
}
return(true);
}