public async Task <IMessageAttachment> GetAttachmentAsync(string queueName, string id, CancellationToken cancellationToken = default(CancellationToken))
{
var db = _multiplexer.GetDatabase(_configuration.DatabaseId);
var metadataHash = await db.HashGetAllAsync(RedisQueueConventions.GetAttachmentMetadataKey(queueName, id)).ConfigureAwait(false);
var data = await db.StringGetAsync(RedisQueueConventions.GetAttachmentBinaryKey(queueName, id)).ConfigureAwait(false);
var metadata = metadataHash.ToStringDictionary();
return(new MessageAttachment(metadata[FileName], metadata[ContentType], new MemoryStream(data)));
}
public async Task <bool> DeleteAttachmentAsync(string queueName, string id, CancellationToken cancellationToken = default(CancellationToken))
{
var db = _multiplexer.GetDatabase(_configuration.DatabaseId);
try
{
await Task.WhenAll(
db.KeyDeleteAsync(RedisQueueConventions.GetAttachmentMetadataKey(queueName, id)),
db.KeyDeleteAsync(RedisQueueConventions.GetAttachmentBinaryKey(queueName, id)))
.ConfigureAwait(false);
return(true);
}
catch (Exception)
{
return(false);
}
}
public async Task UploadAttachmentAsync(string queueName, string id, IMessageAttachment attachment, CancellationToken cancellationToken = default(CancellationToken))
{
var db = _multiplexer.GetDatabase(_configuration.DatabaseId);
var hash = new HashEntry[]
{
new HashEntry(FileName, attachment.Filename),
new HashEntry(ContentType, attachment.ContentType),
};
using (var memoryStream = new MemoryStream())
{
await attachment.Stream.CopyToAsync(memoryStream).ConfigureAwait(false);
await Task.WhenAll(
db.HashSetAsync(RedisQueueConventions.GetAttachmentMetadataKey(queueName, id), hash),
db.StringSetAsync(RedisQueueConventions.GetAttachmentBinaryKey(queueName, id), memoryStream.ToArray()))
.ConfigureAwait(false);
}
}
