/// <summary>
/// Selects the peek message response.
/// </summary>
/// <param name="protocolMessage">The protocol message.</param>
/// <param name="options">A <see cref="QueueRequestOptions"/> object that specifies additional options for the request.</param>
/// <returns>The parsed message.</returns>
private CloudQueueMessage SelectPeekMessageResponse(QueueMessage protocolMessage, QueueRequestOptions options = null)
{
CloudQueueMessage message = null;
byte[] dest = null;
#if !(WINDOWS_RT || ASPNET_K || PORTABLE)
if (options != null && options.EncryptionPolicy != null)
{
// If EncryptionPolicy is set, decrypt the message and set it.
dest = options.EncryptionPolicy.DecryptMessage(protocolMessage.Text, options.RequireEncryption);
}
#endif
if (this.EncodeMessage)
{
if (dest!= null)
{
protocolMessage.Text = Convert.ToBase64String(dest, 0, dest.Length);
}
// if EncodeMessage is true, we assume the string returned from server is Base64 encoding of original message;
// if this is not true, exception will likely be thrown.
// it is user's responsibility to make sure EncodeMessage setting matches the queue that is being read.
message = new CloudQueueMessage(protocolMessage.Text, true);
}
else
{
#if !(WINDOWS_RT || ASPNET_K || PORTABLE)
if (dest != null)
{
message = new CloudQueueMessage(dest);
}
else
#endif
{
message = new CloudQueueMessage(protocolMessage.Text);
}
}
message.Id = protocolMessage.Id;
message.InsertionTime = protocolMessage.InsertionTime;
message.ExpirationTime = protocolMessage.ExpirationTime;
message.DequeueCount = protocolMessage.DequeueCount;
// PopReceipt and TimeNextVisible are not returned during peek
return message;
}
/// <summary>
/// Selects the get message response.
/// </summary>
/// <param name="protocolMessage">The protocol message.</param>
/// <param name="options">A <see cref="QueueRequestOptions"/> object that specifies additional options for the request.</param>
/// <returns>The parsed message.</returns>
private CloudQueueMessage SelectGetMessageResponse(QueueMessage protocolMessage, QueueRequestOptions options = null)
{
CloudQueueMessage message = this.SelectPeekMessageResponse(protocolMessage, options);
message.PopReceipt = protocolMessage.PopReceipt;
if (protocolMessage.NextVisibleTime.HasValue)
{
message.NextVisibleTime = protocolMessage.NextVisibleTime.Value;
}
return message;
}
/// <summary>
/// Selects the get message response.
/// </summary>
/// <param name="protocolMessage">The protocol message.</param>
/// <returns>The parsed message.</returns>
private CloudQueueMessage SelectGetMessageResponse(QueueMessage protocolMessage)
{
var message = this.SelectPeekMessageResponse(protocolMessage);
message.PopReceipt = protocolMessage.PopReceipt;
if (protocolMessage.NextVisibleTime.HasValue)
{
message.NextVisibleTime = protocolMessage.NextVisibleTime.Value;
}
return message;
}
/// <summary>
/// Selects the peek message response.
/// </summary>
/// <param name="protocolMessage">The protocol message.</param>
/// <returns>The parsed message.</returns>
private CloudQueueMessage SelectPeekMessageResponse(QueueMessage protocolMessage)
{
CloudQueueMessage message = null;
if (this.EncodeMessage)
{
// if EncodeMessage is true, we assume the string returned from server is Base64 encoding of original message;
// if this is not true, exception will likely be thrown.
// it is user's responsibility to make sure EncodeMessage setting matches the queue that is being read.
message = new CloudQueueMessage(protocolMessage.Text, true);
}
else
{
message = new CloudQueueMessage(protocolMessage.Text);
}
message.Id = protocolMessage.Id;
message.InsertionTime = protocolMessage.InsertionTime;
message.ExpirationTime = protocolMessage.ExpirationTime;
message.DequeueCount = protocolMessage.DequeueCount;
// PopReceipt and TimeNextVisible are not returned during peek
return message;
}
/// <summary>
/// Parses a message entry in a queue get messages response.
/// </summary>
/// <returns>Message entry</returns>
private static async Task <QueueMessage> ParseMessageEntryAsync(XmlReader reader, CancellationToken token)
{
token.ThrowIfCancellationRequested();
QueueMessage message = null;
string id = null;
string popReceipt = null;
DateTimeOffset?insertionTime = null;
DateTimeOffset?expirationTime = null;
DateTimeOffset?timeNextVisible = null;
string text = null;
int dequeueCount = 0;
await reader.ReadStartElementAsync().ConfigureAwait(false);
while (await reader.IsStartElementAsync().ConfigureAwait(false))
{
token.ThrowIfCancellationRequested();
if (reader.IsEmptyElement)
{
await reader.SkipAsync().ConfigureAwait(false);
}
else
{
switch (reader.Name)
{
case Constants.MessageIdElement:
id = await reader.ReadElementContentAsStringAsync().ConfigureAwait(false);
break;
case Constants.PopReceiptElement:
popReceipt = await reader.ReadElementContentAsStringAsync().ConfigureAwait(false);
break;
case Constants.InsertionTimeElement:
insertionTime = await reader.ReadElementContentAsDateTimeOffsetAsync().ConfigureAwait(false);
break;
case Constants.ExpirationTimeElement:
expirationTime = await reader.ReadElementContentAsDateTimeOffsetAsync().ConfigureAwait(false);
break;
case Constants.TimeNextVisibleElement:
timeNextVisible = await reader.ReadElementContentAsDateTimeOffsetAsync().ConfigureAwait(false);
break;
case Constants.MessageTextElement:
text = await reader.ReadElementContentAsStringAsync().ConfigureAwait(false);
break;
case Constants.DequeueCountElement:
dequeueCount = await reader.ReadElementContentAsInt32Async().ConfigureAwait(false);
break;
default:
await reader.SkipAsync().ConfigureAwait(false);
break;
}
}
}
await reader.ReadEndElementAsync().ConfigureAwait(false);
message =
new QueueMessage
{
Text = text,
Id = id,
PopReceipt = popReceipt,
DequeueCount = dequeueCount,
};
if (insertionTime != null)
{
message.InsertionTime = (DateTimeOffset)insertionTime;
}
if (expirationTime != null)
{
message.ExpirationTime = (DateTimeOffset)expirationTime;
}
if (timeNextVisible != null)
{
message.NextVisibleTime = (DateTimeOffset)timeNextVisible;
}
return(message);
}
