/// <summary>
/// Retrieve Avro Hearder from a stream
/// </summary>
/// <param name="avroStream">The stream that contains the avro header</param>
/// <returns>Avro Header Object</returns>
public static ObjectContainerHeader GetAvroHeader <TSchema>(Stream avroStream)
{
ObjectContainerHeader avroHeader = null;
avroStream.Seek(0, SeekOrigin.Begin);
using (var decoder = new BinaryDecoder(avroStream, true))
{
avroHeader = ObjectContainerHeader.Read(decoder);
}
avroStream.Dispose();
return(avroHeader);
}
/// <summary>
/// Initializes a new instance of the <see cref="StreamReader{T}"/> class for Avro records.
/// </summary>
/// <param name="readerSchema">The reader schema.</param>
/// <param name="stream">The input stream.</param>
/// <param name="leaveOpen">If set to <c>true</c> leaves the input stream open.</param>
/// <param name="codecFactory">The codec factory.</param>
public StreamReader(string readerSchema, Stream stream, bool leaveOpen, CodecFactory codecFactory)
{
if (stream == null)
{
throw new ArgumentNullException("stream");
}
if (codecFactory == null)
{
throw new ArgumentNullException("codecFactory");
}
this.stream = stream;
this.decoder = new BinaryDecoder(stream, leaveOpen);
this.header = ObjectContainerHeader.Read(this.decoder);
this.codec = codecFactory.Create(this.header.CodecName);
this.serializer = (IAvroSerializer <T>)AvroSerializer.CreateGenericDeserializerOnly(this.header.Schema, readerSchema ?? this.header.Schema);
}
/// <summary>
/// Initializes a new instance of the <see cref="StreamReader{T}"/> class for static types.
/// </summary>
/// <param name="stream">The stream.</param>
/// <param name="leaveOpen">If set to <c>true</c> leaves the input stream open.</param>
/// <param name="settings">The settings.</param>
/// <param name="codecFactory">The codec factory.</param>
public StreamReader(Stream stream, bool leaveOpen, AvroSerializerSettings settings, CodecFactory codecFactory)
{
if (stream == null)
{
throw new ArgumentNullException("stream");
}
if (settings == null)
{
throw new ArgumentNullException("settings");
}
if (codecFactory == null)
{
throw new ArgumentNullException("codecFactory");
}
this.stream = stream;
this.decoder = new BinaryDecoder(stream, leaveOpen);
this.header = ObjectContainerHeader.Read(this.decoder);
this.codec = codecFactory.Create(this.header.CodecName);
this.serializer = AvroSerializer.CreateDeserializerOnly <T>(this.header.Schema, settings);
}