private JsonDocumentMetadata ReadDocumentMetadata(string key)
{
var loweredKey = CreateKey(key);
var metadataReadResult = metadataIndex.Read(Snapshot, loweredKey, writeBatch.Value);
if (metadataReadResult == null)
{
return(null);
}
using (var stream = metadataReadResult.Reader.AsStream())
{
stream.Position = 0;
var etag = stream.ReadEtag();
var originalKey = stream.ReadString();
var lastModifiedDateTimeBinary = stream.ReadInt64();
var existingCachedDocument = documentCacher.GetCachedDocument(loweredKey, etag);
var metadata = existingCachedDocument != null ? existingCachedDocument.Metadata : stream.ToJObject();
var lastModified = DateTime.FromBinary(lastModifiedDateTimeBinary);
return(new JsonDocumentMetadata
{
Key = originalKey,
Etag = etag,
Metadata = metadata,
LastModified = lastModified
});
}
}
private JsonDocumentMetadata ReadDocumentMetadata(string normalizedKey, Slice sliceKey, out int size)
{
try
{
var metadataReadResult = metadataIndex.Read(Snapshot, sliceKey, writeBatch.Value);
size = 0;
if (metadataReadResult == null)
{
return(null);
}
using (var stream = metadataReadResult.Reader.AsStream())
{
stream.Position = 0;
var etag = stream.ReadEtag();
var originalKey = stream.ReadString();
var lastModifiedDateTimeBinary = stream.ReadInt64();
var existingCachedDocument = documentCacher.GetCachedDocument(normalizedKey, etag);
size = (int)stream.Length;
var metadata = existingCachedDocument != null ? existingCachedDocument.Metadata : stream.ToJObject();
var lastModified = DateTime.FromBinary(lastModifiedDateTimeBinary);
return(new JsonDocumentMetadata
{
Key = originalKey,
Etag = etag,
Metadata = metadata,
LastModified = lastModified
});
}
}
catch (Exception e)
{
throw new InvalidDataException("Failed to de-serialize metadata of document " + normalizedKey, e);
}
}
private Tuple <MemoryStream, RavenJObject, int> ReadMetadata(string key, Guid etag, Func <byte[]> getData, out RavenJObject metadata)
{
var cachedDocument = documentCacher.GetCachedDocument(key, etag);
if (cachedDocument != null)
{
metadata = cachedDocument.Metadata;
return(Tuple.Create <MemoryStream, RavenJObject, int>(null, cachedDocument.Document, cachedDocument.Size));
}
var buffer = getData();
var memoryStream = new MemoryStream(buffer, 0, buffer.Length, true, true);
metadata = memoryStream.ToJObject();
return(Tuple.Create <MemoryStream, RavenJObject, int>(memoryStream, null, (int)memoryStream.Length));
}
