/// <summary>
/// Reads message(s) from a queue. Returns JSON structure with message contents. Message data is byte[] encoded to base64 string.
/// </summary>
/// <param name="inputParams"></param>
/// <returns>JSON structure with message contents: string Data, Dictionary(string,string) Headers, ulong DeliveryTag, uint MessageCount</returns>
public static Output ReadMessage([PropertyTab] ReadInputParams inputParams)
{
var output = new Output();
OpenConnectionIfClosed(inputParams.HostName, inputParams.ConnectWithURI);
while (inputParams.ReadMessageCount-- > 0)
{
var rcvMessage = _channel.BasicGet(queue: inputParams.QueueName, autoAck: inputParams.AutoAck == ReadAckType.AutoAck);
if (rcvMessage != null)
{
output.Messages.Add(new Message
{
Data = Convert.ToBase64String(rcvMessage.Body.ToArray()),
Headers = GetResponseHeaderDictionary(rcvMessage.BasicProperties),
MessagesCount = rcvMessage.MessageCount,
DeliveryTag = rcvMessage.DeliveryTag
});
}
// Break the loop if no more messagages are present.
else
{
break;
}
}
// Auto acking.
if (inputParams.AutoAck != ReadAckType.AutoAck && inputParams.AutoAck != ReadAckType.ManualAck)
{
var ackType = ManualAckType.NackAndRequeue;
switch (inputParams.AutoAck)
{
case ReadAckType.AutoNack:
ackType = ManualAckType.Nack;
break;
case ReadAckType.AutoNackAndRequeue:
ackType = ManualAckType.NackAndRequeue;
break;
case ReadAckType.AutoReject:
ackType = ManualAckType.Reject;
break;
case ReadAckType.AutoRejectAndRequeue:
ackType = ManualAckType.RejectAndRequeue;
break;
}
foreach (var message in output.Messages)
{
AcknowledgeMessage(ackType, message.DeliveryTag);
}
}
return(output);
}
/// <summary>
/// Reads message(s) from a queue. Returns JSON structure with message contents. Message data is string converted from byte[] using UTF8 encoding
/// </summary>
/// <param name="inputParams"></param>
/// <returns>JSON structure with message contents</returns>
public static OutputString ReadMessageString([PropertyTab] ReadInputParams inputParams)
{
var messages = ReadMessage(inputParams);
OutputString outString = new OutputString();
outString.Messages = messages.Messages.Select(m =>
new MessageString
{
DeliveryTag = m.DeliveryTag,
MessagesCount = m.MessagesCount,
Data = Encoding.UTF8.GetString(Convert.FromBase64String(m.Data))
}).ToList();
return(outString);
}
/// <summary>
/// Reads message(s) from a queue. Returns JSON structure with message contents. Message data is byte[] encoded to base64 string
/// </summary>
/// <param name="inputParams"></param>
/// <returns>JSON structure with message contents</returns>
public static Output ReadMessage([PropertyTab] ReadInputParams inputParams)
{
Output output = new Output();
OpenConnectionIfClosed(inputParams.HostName, inputParams.ConnectWithURI);
//channel.QueueDeclare(queue: inputParams.QueueName,
// durable: false,
// exclusive: false,
// autoDelete: false,
// arguments: null);
while (inputParams.ReadMessageCount-- > 0)
{
var rcvMessage = _channel.BasicGet(queue: inputParams.QueueName, autoAck: inputParams.AutoAck == ReadAckType.AutoAck);
if (rcvMessage != null)
{
output.Messages.Add(new Message {
Data = Convert.ToBase64String(rcvMessage.Body), MessagesCount = rcvMessage.MessageCount, DeliveryTag = rcvMessage.DeliveryTag
});
}
//break the loop if no more messagages are present
else
{
break;
}
}
// Auto acking
if (inputParams.AutoAck != ReadAckType.AutoAck && inputParams.AutoAck != ReadAckType.ManualAck)
{
ManualAckType ackType = ManualAckType.NackAndRequeue;
switch (inputParams.AutoAck)
{
case ReadAckType.AutoNack:
ackType = ManualAckType.Nack;
break;
case ReadAckType.AutoNackAndRequeue:
ackType = ManualAckType.NackAndRequeue;
break;
case ReadAckType.AutoReject:
ackType = ManualAckType.Reject;
break;
case ReadAckType.AutoRejectAndRequeue:
ackType = ManualAckType.RejectAndRequeue;
break;
}
foreach (var message in output.Messages)
{
AcknowledgeMessage(ackType, message.DeliveryTag);
}
}
return(output);
}
