public Task FromPath()
{
var timestamps = new List <Timestamp>();
foreach (var file in new[]
{
"/Dir/92cb8761e3e5246f873da524f438f95468eb3d36_2021-03-22T095023_S{etag}.bin",
"/Dir/92cb8761e3e5246f873da524f438f95468eb3d36_2021-03-22T095023_Setag.bin",
"/Dir/92cb8761e3e5246f873da524f438f95468eb3d36_2021-03-22T095023_W{etag}.bin",
"/Dir/92cb8761e3e5246f873da524f438f95468eb3d36_2021-03-22T095023_Wetag.bin",
"/Dir/92cb8761e3e5246f873da524f438f95468eb3d36_2021-03-22T095023_.bin",
})
{
timestamps.Add(Timestamp.FromPath(file));
}
return(Verifier.Verify(timestamps));
}
Result HandleFileExists(
Uri uri,
bool staleIfError,
Action <HttpRequestMessage>?modifyRequest,
FilePair contentFile,
CancellationToken token)
{
var now = DateTimeOffset.UtcNow;
var timestamp = Timestamp.FromPath(contentFile.Content);
if (timestamp.Expiry > now)
{
return(new(contentFile, false, false));
}
using var request = BuildRequest(uri, modifyRequest);
timestamp.ApplyHeadersToRequest(request);
HttpResponseMessage?response;
var httpClient = GetClient();
try
{
response = httpClient.SendEx(request, token);
}
catch (Exception exception)
{
if (ShouldReturnStaleIfError(staleIfError, exception, token))
{
return(new(contentFile, true, false));
}
throw;
}
var status = response.CacheStatus(staleIfError);
switch (status)
{
case CacheStatus.Hit:
case CacheStatus.UseStaleDueToError:
{
response.Dispose();
return(new(contentFile, true, false));
}
case CacheStatus.Stored:
case CacheStatus.Revalidate:
{
using (response)
{
return(AddItem(response, uri, token));
}
}
case CacheStatus.NoStore:
{
return(new(response));
}
default:
{
response.Dispose();
throw new ArgumentOutOfRangeException();
}
}
}
