// Send a message.
public async Task SendMessage(string address, ServiceBusHttpMessage message)
{
HttpContent postContent = new ByteArrayContent(message.body);
// Serialize BrokerProperties.
DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(BrokerProperties));
MemoryStream ms = new MemoryStream();
serializer.WriteObject(ms, message.brokerProperties);
ms.Flush();
byte[] proertyBytes = ms.ToArray();
postContent.Headers.Add("BrokerProperties", Encoding.UTF8.GetString(proertyBytes, 0, proertyBytes.Length));
ms.Dispose();
// Add custom properties.
foreach (string key in message.customProperties.Keys)
{
postContent.Headers.Add(key, message.customProperties[key]);
}
// Send message.
HttpResponseMessage response = null;
try
{
response = await this.httpClient.PostAsync(address + "/messages" + "?timeout=20", postContent);
response.EnsureSuccessStatusCode();
}
catch (HttpRequestException ex)
{
this.sbConn.LogEvent(EventTypeConsts.Error, "SendMessage failed: ", ex.Message + "\n" + address);
}
}
// Send a batch of messages.
public async Task SendMessageBatch(string address, ServiceBusHttpMessage message)
{
// Custom properties that are defined for the brokered message that contains the batch are ignored.
// Throw exception to signal that these properties are ignored.
if (message.customProperties.Count != 0)
{
throw new ArgumentException("Custom properties in BrokeredMessage are ignored.");
}
HttpContent postContent = new ByteArrayContent(message.body);
postContent.Headers.ContentType = new MediaTypeHeaderValue("application/vnd.microsoft.servicebus.json");
// Send message.
HttpResponseMessage response = null;
try
{
response = await this.httpClient.PostAsync(address + "/messages" + "?timeout=20", postContent);
response.EnsureSuccessStatusCode();
}
catch (HttpRequestException ex)
{
this.sbConn.LogEvent(EventTypeConsts.Error, "SendMessageBatch failed: ", ex.Message + "\n" + address);
}
}
public async void ReadMessageAsync(string Location, int eventsExpiration)
{
try
{
ReaderMutex.WaitOne(MutexWaitTime); // Wait one minute for mutex
ServiceBusHttpMessage receiveMessage = await HttpHelper.ReceiveAndDeleteMessage(this.subscriptionAddress);
int countInBatch = 0;
// Read messages in batches (10 messages or nothing)
while (receiveMessage != null)
{
countInBatch++;
string sBody = receiveMessage.GetMessageText();
if (!string.IsNullOrEmpty(sBody))
{
ProcessMessage(sBody, eventsExpiration);
}
else
{
/// Unknow schema - probably an error
this.LogEvent(EventTypeConsts.Error, "Unknown messagen format", sBody);
}
if (countInBatch < MaxMessageBatchCount)
{
receiveMessage = await HttpHelper.ReceiveAndDeleteMessage(this.subscriptionAddress);
if (receiveMessage != null)
{
/// wait a little bit before we'll process next message
await Task.Yield();
}
}
else
{
break; // Limith count of messages in single batch
}
}
}
catch (Exception ex)
{
// DC.Trace(ex.Message + ex.StackTrace);
// some wrong message format - report and igore
this.LogEvent(EventTypeConsts.Error, "Message error", ex.Message);
}
finally
{
ReaderMutex.ReleaseMutex();
}
}
public async Task <ServiceBusHttpMessage> Receive(string address, bool deleteMessage)
{
// Retrieve message from Service Bus.
HttpResponseMessage response = null;
try
{
if (deleteMessage)
{
response = await this.httpClient.DeleteAsync(address + "/messages/head?timeout=20");
}
else
{
response = await this.httpClient.PostAsync(address + "/messages/head?timeout=20", new ByteArrayContent(new Byte[0]));
}
response.EnsureSuccessStatusCode();
}
catch (HttpRequestException ex)
{
if (deleteMessage)
{
this.sbConn.LogEvent(EventTypeConsts.Error, "ReceiveAndDeleteMessage failed: ", ex.Message + "\n" + address);
}
else
{
this.sbConn.LogEvent(EventTypeConsts.Error, "ReceiveMessage failed: ", ex.Message + "\n" + address);
}
throw ex;
}
// Check if a message was returned.
HttpResponseHeaders headers = response.Headers;
if (!headers.Contains("BrokerProperties"))
{
return(null);
}
// Get message body.
ServiceBusHttpMessage message = new ServiceBusHttpMessage();
message.body = await response.Content.ReadAsByteArrayAsync();
// Deserialize BrokerProperties.
IEnumerable <string> brokerProperties = headers.GetValues("BrokerProperties");
DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(BrokerProperties));
foreach (string key in brokerProperties)
{
using (MemoryStream ms = new MemoryStream(Encoding.GetEncoding("ASCII").GetBytes(key)))
{
message.brokerProperties = (BrokerProperties)serializer.ReadObject(ms);
}
}
// Get custom propoerties.
foreach (var header in headers)
{
string key = header.Key;
if (!key.Equals("Transfer-Encoding") && !key.Equals("BrokerProperties") && !key.Equals("ContentType") && !key.Equals("Location") && !key.Equals("Date") && !key.Equals("Server"))
{
foreach (string value in header.Value)
{
message.customProperties.Add(key, value);
}
}
}
// Get message URI.
if (headers.Contains("Location"))
{
IEnumerable <string> locationProperties = headers.GetValues("Location");
message.location = locationProperties.FirstOrDefault();
}
return(message);
}
