public Task <IGetBlobStrategy> CreateGetBlobStrategyAsync(GetBlobRequest getBlobRequest)
{
getBlobRequest.ValidateArgument(nameof(getBlobRequest));
var container = cloudBlobClient.GetContainerReference(getBlobRequest.ContainerName.ToLower());
var blob = container.GetBlockBlobReference(getBlobRequest.BlobName);
var sasStartTime = DateTime.UtcNow.Add(urlStartOffset);
var sasExpirationTime = DateTime.UtcNow.Add(urlDuration);
var sasBlobPolicy = new SharedAccessBlobPolicy
{
SharedAccessStartTime = sasStartTime,
SharedAccessExpiryTime = sasExpirationTime,
Permissions = SharedAccessBlobPermissions.Read
};
var strategyConfiguration = new HttpGetBlobConfiguration
{
Url = (blob.Uri + blob.GetSharedAccessSignature(sasBlobPolicy)),
UrlExpirationUtc = sasExpirationTime
};
return(Task.FromResult(new HttpGetBlobStrategy(strategyConfiguration) as IGetBlobStrategy));
}
public async Task <StorageStrategyDefinition> GetGetBlobStrategyDefinitionAsync(GetBlobRequest getBlobRequest)
{
getBlobRequest.ValidateArgument(nameof(getBlobRequest));
var relativeUrl = new Uri($"/get-blob/{getBlobRequest.ContainerName}/{getBlobRequest.BlobName}", UriKind.Relative);
var response = await httpClient.GetStringAsync(new Uri(baseUrl, relativeUrl)).ConfigureAwait(false);
return(JsonConvert.DeserializeObject <StorageStrategyDefinition>(response));
}
public async Task <Stream> GetBlobAsync(GetBlobRequest getBlobRequest)
{
getBlobRequest.ValidateArgument(nameof(getBlobRequest));
var strategyDefinition = await storageServiceProxy.GetGetBlobStrategyDefinitionAsync(getBlobRequest);
var getBlobStrategy = await getBlobStrategyFactory.CreateStrategyAsync(strategyDefinition);
return(await getBlobStrategy.GetBlobAsync());
}
public Task <IGetBlobStrategy> CreateGetBlobStrategyAsync(GetBlobRequest getBlobRequest)
{
getBlobRequest.ValidateArgument(nameof(getBlobRequest));
var expirationTimeUtc = DateTime.UtcNow.Add(urlDuration);
var getBlobUrl = urlSigner.Sign(
getBlobRequest.ContainerName,
getBlobRequest.BlobName,
expirationTimeUtc,
HttpMethod.Get);
var strategyConfiguration = new HttpGetBlobConfiguration
{
Url = getBlobUrl,
UrlExpirationUtc = expirationTimeUtc
};
return(Task.FromResult(new HttpGetBlobStrategy(strategyConfiguration) as IGetBlobStrategy));
}
public Task <IGetBlobStrategy> CreateGetBlobStrategyAsync(GetBlobRequest getBlobRequest)
{
getBlobRequest.ValidateArgument(nameof(getBlobRequest));
var urlExpirationTime = DateTime.UtcNow.Add(urlDuration);
var urlRequest = new GetPreSignedUrlRequest
{
BucketName = getBlobRequest.ContainerName,
Expires = urlExpirationTime,
Key = getBlobRequest.BlobName,
Protocol = Protocol.HTTPS,
Verb = HttpVerb.GET
};
var strategyConfiguration = new HttpGetBlobConfiguration
{
Url = s3Client.GetPreSignedURL(urlRequest),
UrlExpirationUtc = urlExpirationTime
};
return(Task.FromResult(new HttpGetBlobStrategy(strategyConfiguration) as IGetBlobStrategy));
}