public static string GetSqsQueueName(string destination, TransportConfiguration transportConfiguration)
{
if (string.IsNullOrWhiteSpace(destination))
{
throw new ArgumentNullException(nameof(destination));
}
var s = transportConfiguration.QueueNamePrefix + destination;
if (transportConfiguration.PreTruncateQueueNames && s.Length > 80)
{
var charsToTake = 80 - transportConfiguration.QueueNamePrefix.Length;
s = transportConfiguration.QueueNamePrefix +
new string(s.Reverse().Take(charsToTake).Reverse().ToArray());
}
if (s.Length > 80)
{
throw new Exception($"Address {destination} with configured prefix {transportConfiguration.QueueNamePrefix} is longer than 80 characters and therefore cannot be used to create an SQS queue. Use a shorter queue name.");
}
var queueNameBuilder = new StringBuilder(s);
return(GetSanitizedQueueName(queueNameBuilder, s));
}
public static async Task <byte[]> RetrieveBody(this TransportMessage transportMessage,
IAmazonS3 s3Client,
TransportConfiguration transportConfiguration,
CancellationToken cancellationToken)
{
if (string.IsNullOrEmpty(transportMessage.S3BodyKey))
{
return(Convert.FromBase64String(transportMessage.Body));
}
var s3GetResponse = await s3Client.GetObjectAsync(transportConfiguration.S3BucketForLargeMessages,
transportMessage.S3BodyKey,
cancellationToken).ConfigureAwait(false);
using (var memoryStream = new MemoryStream())
{
await s3GetResponse.ResponseStream.CopyToAsync(memoryStream).ConfigureAwait(false);
return(memoryStream.ToArray());
}
}
public static string GetSqsQueueName(string destination, TransportConfiguration transportConfiguration)
{
if (string.IsNullOrWhiteSpace(destination))
{
throw new ArgumentNullException(nameof(destination));
}
var s = transportConfiguration.QueueNamePrefix + destination;
if (transportConfiguration.PreTruncateQueueNames && s.Length > 80)
{
var charsToTake = 80 - transportConfiguration.QueueNamePrefix.Length;
s = transportConfiguration.QueueNamePrefix +
new string(s.Reverse().Take(charsToTake).Reverse().ToArray());
}
if (s.Length > 80)
{
throw new Exception($"Address {destination} with configured prefix {transportConfiguration.QueueNamePrefix} is longer than 80 characters and therefore cannot be used to create an SQS queue. Use a shorter queue name.");
}
var skipCharacters = s.EndsWith(".fifo") ? 5 : 0;
var queueNameBuilder = new StringBuilder(s);
// SQS queue names can only have alphanumeric characters, hyphens and underscores.
// Any other characters will be replaced with a hyphen.
for (var i = 0; i < queueNameBuilder.Length - skipCharacters; ++i)
{
var c = queueNameBuilder[i];
if (!char.IsLetterOrDigit(c) &&
c != '-' &&
c != '_')
{
queueNameBuilder[i] = '-';
}
}
return(queueNameBuilder.ToString());
}
public static async Task <byte[]> RetrieveBody(this TransportMessage transportMessage,
IAmazonS3 s3Client,
TransportConfiguration transportConfiguration,
CancellationToken cancellationToken)
{
if (string.IsNullOrEmpty(transportMessage.S3BodyKey))
{
return(Convert.FromBase64String(transportMessage.Body));
}
var getObjectRequest = new GetObjectRequest
{
BucketName = transportConfiguration.S3BucketForLargeMessages,
Key = transportMessage.S3BodyKey
};
if (transportConfiguration.ServerSideEncryptionCustomerMethod != null)
{
getObjectRequest.ServerSideEncryptionCustomerMethod = transportConfiguration.ServerSideEncryptionCustomerMethod;
getObjectRequest.ServerSideEncryptionCustomerProvidedKey = transportConfiguration.ServerSideEncryptionCustomerProvidedKey;
if (!string.IsNullOrEmpty(transportConfiguration.ServerSideEncryptionCustomerProvidedKeyMD5))
{
getObjectRequest.ServerSideEncryptionCustomerProvidedKeyMD5 = transportConfiguration.ServerSideEncryptionCustomerProvidedKeyMD5;
}
}
var s3GetResponse = await s3Client.GetObjectAsync(getObjectRequest, cancellationToken)
.ConfigureAwait(false);
using (var memoryStream = new MemoryStream())
{
await s3GetResponse.ResponseStream.CopyToAsync(memoryStream).ConfigureAwait(false);
return(memoryStream.ToArray());
}
}
public static async Task <IncomingMessage> ToIncomingMessage(this TransportMessage transportMessage,
IAmazonS3 amazonS3,
TransportConfiguration transportConfiguration,
CancellationToken cancellationToken)
{
var messageId = transportMessage.Headers[Headers.MessageId];
byte[] body;
if (string.IsNullOrEmpty(transportMessage.S3BodyKey))
{
body = Convert.FromBase64String(transportMessage.Body);
}
else
{
var s3GetResponse = await amazonS3.GetObjectAsync(transportConfiguration.S3BucketForLargeMessages,
transportMessage.S3BodyKey,
cancellationToken).ConfigureAwait(false);
body = new byte[s3GetResponse.ResponseStream.Length];
using (var bufferedStream = new BufferedStream(s3GetResponse.ResponseStream))
{
int count;
var transferred = 0;
const int maxChunkSize = 8 * 1024;
var bytesToRead = Math.Min(maxChunkSize, body.Length - transferred);
while ((count = await bufferedStream.ReadAsync(body, transferred, bytesToRead, cancellationToken).ConfigureAwait(false)) > 0)
{
transferred += count;
bytesToRead = Math.Min(maxChunkSize, body.Length - transferred);
}
}
}
return(new IncomingMessage(messageId, transportMessage.Headers, body));
}