// If-Modified-Since OR 304
// If-None-Match -- ETag OR 304
public async Task <IBlobResult> GetAsync(string key, GetBlobOptions options)
{
if (options is null)
{
throw new ArgumentNullException(nameof(options));
}
int retryCount = 0;
Exception lastException;
do
{
if (retryCount > 0)
{
await Task.Delay(retryPolicy.GetDelay(retryCount)).ConfigureAwait(false);
}
try
{
var request = ConstructGetRequest(key, options);
return(await client.GetObjectAsync(request).ConfigureAwait(false));
}
catch (S3Exception ex) when(ex.IsTransient)
{
lastException = ex;
}
retryCount++;
}while (retryPolicy.ShouldRetry(retryCount));
throw lastException;
}
private GetObjectRequest ConstructGetRequest(string key, GetBlobOptions options)
{
var request = new GetObjectRequest(
host: client.Host,
bucketName: bucketName,
key: key
);
if (options.IfModifiedSince is DateTimeOffset ifModifiedSince)
{
request.IfModifiedSince = ifModifiedSince;
}
if (options.EncryptionKey is byte[] encryptionKey)
{
request.SetCustomerEncryptionKey(new ServerSideEncryptionKey(encryptionKey));
}
if (options.IfNoneMatch is string ifNoneMatch)
{
request.IfNoneMatch = ifNoneMatch;
}
if (options.Range is ByteRange range)
{
request.SetRange(range.Start, range.End);
}
if (options.BufferResponse)
{
request.CompletionOption = HttpCompletionOption.ResponseContentRead;
}
return(request);
}
public async Task <IBlobResult> GetAsync(string key, GetBlobOptions options)
{
Ensure.NotNullOrEmpty(key, nameof(key));
// TODO: Support blob options
return(await client.GetObjectAsync(new GetObjectRequest(name, key)));
}
// If-Modified-Since OR 304
// If-None-Match -- ETag OR 304
public async Task <IBlobResult> GetAsync(string key, GetBlobOptions options)
{
#region Preconditions
if (key == null)
{
throw new ArgumentNullException(nameof(key));
}
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
#endregion
var request = new GetObjectRequest(
host: client.Host,
bucketName: bucketName,
objectName: key
);
if (options.IfModifiedSince != null)
{
request.IfModifiedSince = options.IfModifiedSince;
}
if (options.EncryptionKey != null)
{
request.SetCustomerEncryptionKey(new ServerSideEncryptionKey(options.EncryptionKey));
}
if (options.IfNoneMatch != null)
{
request.IfNoneMatch = options.IfNoneMatch;
}
if (options.Range != null)
{
request.SetRange(options.Range.Value.Start, options.Range.Value.End);
}
if (options.BufferResponse)
{
request.CompletionOption = HttpCompletionOption.ResponseContentRead;
}
return(await client.GetObjectAsync(request).ConfigureAwait(false));
}
// If-Modified-Since OR 304
// If-None-Match -- ETag OR 304
public Task <IBlobResult> GetAsync(string key, GetBlobOptions options)
{
return(GetAsync(key, options, default));
}