private void ListenerThread()
{
IMQGetChannelMessagesParams paramsGetMsg = _mq.CreateGetChannelMessagesParams();
paramsGetMsg.ReceiverId = _subscriberId;
List <long> channels = new List <long>();
while (_isListening)
{
// waiting for next polling
Thread.Sleep(this.PollPeriod);
// getting list of channels which currently subscribed to
channels.Clear();
lock (_lockChannels)
{
channels.AddRange(_channels.Values);
}
// getting messages for each channel
foreach (var c in channels)
{
try
{
paramsGetMsg.ChannelId = c;
var resGetMsg = _mq.GetChannelMessages(paramsGetMsg);
if (resGetMsg.Success && resGetMsg.Messages.Count > 0)
{
OnNewChannelMessages(resGetMsg.Messages);
}
}
catch (Exception ex)
{
// Ignoring any errors here - just moving to next channel
}
}
}
}
public void GetChannelMessages_Success()
{
RunInitSql("040.GetChannelMessages_Success", _conn);
IMessageQueue mq = CreateMQ();
// getting channel ID
IMQGetChannelIdParams paramsGetChannelId = mq.CreateGetChannelIdParams();
paramsGetChannelId.ChannelName = ConfigurationManager.AppSettings["ChannelName"];
IMQGetChannelIdResult channelId = mq.GetChannelId(paramsGetChannelId);
// getting subscribers ID
IMQGetSubscriberIdParams paramsSenderId = mq.CreateGetSubscriberIdParams();
paramsSenderId.SubscriberName = ConfigurationManager.AppSettings["SenderName"];
IMQGetSubscriberIdResult senderId = mq.GetSubscriberId(paramsSenderId);
IMQGetSubscriberIdParams paramsRecId = mq.CreateGetSubscriberIdParams();
paramsRecId.SubscriberName = ConfigurationManager.AppSettings["ReceiverName"];
IMQGetSubscriberIdResult receiverId = mq.GetSubscriberId(paramsRecId);
// subscribing both
IMQSubscribeParams paramSubscribe = mq.CreateSubscribeParams();
paramSubscribe.ChannelId = (long)channelId.ChannelId;
paramSubscribe.SubscriberId = (long)senderId.SubscriberId;
var subscribeResult = mq.Subscribe(paramSubscribe);
paramSubscribe.SubscriberId = (long)receiverId.SubscriberId;
subscribeResult = mq.Subscribe(paramSubscribe);
// sending 3 messages
for (int i = 0; i < 3; ++i)
{
IMQPushMessageParams paramsPush = mq.CreatePushMessageParams();
paramsPush.ChannelId = (long)channelId.ChannelId;
paramsPush.SenderId = (long)senderId.SubscriberId;
paramsPush.MessageType = ConfigurationManager.AppSettings["TestMessageType"];
paramsPush.Payload = ConfigurationManager.AppSettings["TestMessagePayload"] + "-" + i;
paramsPush.RecipientId = null;
var pushRes = mq.PushMessage(paramsPush);
}
// getting messages
IMQGetChannelMessagesParams paramsGetMsgs = mq.CreateGetChannelMessagesParams();
paramsGetMsgs.ChannelId = (long)channelId.ChannelId;
paramsGetMsgs.ReceiverId = (long)receiverId.SubscriberId;
var result = mq.GetChannelMessages(paramsGetMsgs);
RunFinalizeSql("040.GetChannelMessages_Success", _conn);
Assert.IsNotNull(result);
Assert.IsTrue(result.Success);
Assert.IsEmpty(result.Errors);
Assert.GreaterOrEqual(result.Messages.Count, 3);
}
public IMQGetChannelMessagesResult GetChannelMessages(IMQGetChannelMessagesParams paramsGetMsgs)
{
var result = new DbMQGetChannelMessagesResult();
string spName = "[SP_Get_Channel_Messages]";
SqlConnection conn = OpenConnection("ConnectionString");
SqlCommand cmd = new SqlCommand();
cmd.CommandText = schema + "." + spName;
cmd.CommandType = CommandType.StoredProcedure;
cmd.Connection = conn;
try
{
SqlParameter paramChannelId = new SqlParameter("@IN_Channel_Id",
SqlDbType.BigInt, 0,
ParameterDirection.Input, false, 0, 0, "", DataRowVersion.Current,
paramsGetMsgs.ChannelId);
SqlParameter paramReceiverId = new SqlParameter("@IN_Receiver_Id",
SqlDbType.BigInt, 0,
ParameterDirection.Input, false, 0, 0, "", DataRowVersion.Current,
paramsGetMsgs.ReceiverId);
cmd.Parameters.Add(paramChannelId);
cmd.Parameters.Add(paramReceiverId);
DataSet ds = new DataSet();
SqlDataAdapter da = new SqlDataAdapter();
da.SelectCommand = cmd;
da.Fill(ds);
if (ds.Tables.Count >= 1)
{
for (int i = 0; i < ds.Tables[0].Rows.Count; ++i)
{
DataRow r = ds.Tables[0].Rows[i];
MessageDetails md = new MessageDetails();
md.Id = (long)r["Message_Id"];
md.ChannelName = (string)r["Channel_Name"];
md.ChannelId = (long)r["Channel_Id"];
md.Payload = (string)r["Message_Payload"];
md.SenderId = !DBNull.Value.Equals(r["Sender_Id"]) ? (long?)r["Sender_Id"] : null;
md.SubscriberId = !DBNull.Value.Equals(r["Subscriber_Id"]) ? (long?)r["Subscriber_Id"] : null;
md.Type = (string)r["Message_Type"];
result.Messages.Add(md);
}
}
result.Success = true;
}
catch (Exception ex)
{
result.Success = false;
result.Errors.Add(new Interfaces.Error()
{
Message = ex.Message,
Code = Interfaces.EErrorCodes.MQDbError,
Type = Interfaces.EErrorType.Error
});
}
conn.Close();
return(result);
}
