internal async virtual Task <Chunk> BuildChunk(
bool async,
string chunkPath,
long blockOffset = 0,
long eventIndex = 0,
CancellationToken cancellationToken = default)
{
BlobClient blobClient = _containerClient.GetBlobClient(chunkPath);
AvroReader avroReader;
Stream dataStream = _lazyLoadingBlobStreamFactory.BuildLazyLoadingBlobStream(
blobClient,
offset: blockOffset,
blockSize: Constants.ChangeFeed.ChunkBlockDownloadSize);
// We aren't starting from the beginning of the Chunk
if (blockOffset != 0)
{
Stream headStream = _lazyLoadingBlobStreamFactory.BuildLazyLoadingBlobStream(
blobClient,
offset: 0,
blockSize: Constants.ChangeFeed.LazyLoadingBlobStreamBlockSize);
avroReader = _avroReaderFactory.BuildAvroReader(
dataStream,
headStream,
blockOffset,
eventIndex);
}
else
{
avroReader = _avroReaderFactory.BuildAvroReader(dataStream);
}
await avroReader.Initalize(async, cancellationToken).ConfigureAwait(false);
return(new Chunk(
avroReader,
blockOffset,
eventIndex,
chunkPath));
}
public virtual Chunk BuildChunk(
string chunkPath,
long?blockOffset = default,
long?eventIndex = default)
{
BlobClient blobClient = _containerClient.GetBlobClient(chunkPath);
blockOffset ??= 0;
eventIndex ??= 0;
AvroReader avroReader;
Stream dataStream = _lazyLoadingBlobStreamFactory.BuildLazyLoadingBlobStream(
blobClient,
offset: blockOffset.Value,
blockSize: Constants.ChangeFeed.ChunkBlockDownloadSize);
// We aren't starting from the beginning of the Chunk
if (blockOffset != 0)
{
Stream headStream = _lazyLoadingBlobStreamFactory.BuildLazyLoadingBlobStream(
blobClient,
offset: 0,
blockSize: 3 * Constants.KB);
avroReader = _avroReaderFactory.BuildAvroReader(
dataStream,
headStream,
blockOffset.Value,
eventIndex.Value);
}
else
{
avroReader = _avroReaderFactory.BuildAvroReader(dataStream);
}
return(new Chunk(
avroReader,
blockOffset.Value,
eventIndex.Value));
}
internal virtual Chunk BuildChunk(
string chunkPath,
long blockOffset = 0,
long eventIndex = 0)
{
BlobClient blobClient = _containerClient.GetBlobClient(chunkPath);
AvroReader avroReader;
Stream dataStream = _lazyLoadingBlobStreamFactory.BuildLazyLoadingBlobStream(
blobClient,
offset: blockOffset,
blockSize: Constants.ChangeFeed.ChunkBlockDownloadSize);
// We aren't starting from the beginning of the Chunk
if (blockOffset != 0)
{
Stream headStream = _lazyLoadingBlobStreamFactory.BuildLazyLoadingBlobStream(
blobClient,
offset: 0,
blockSize: Constants.ChangeFeed.LazyLoadingBlobStreamBlockSize);
avroReader = _avroReaderFactory.BuildAvroReader(
dataStream,
headStream,
blockOffset,
eventIndex);
}
else
{
avroReader = _avroReaderFactory.BuildAvroReader(dataStream);
}
return(new Chunk(
avroReader,
blockOffset,
eventIndex));
}