/// <summary>
/// Reads the header from the specified decoder.
/// </summary>
/// <param name="decoder">The decoder.</param>
/// <exception cref="System.Runtime.Serialization.SerializationException">Thrown when the object in the stream is not a valid Avro object container.</exception>
/// <returns>The header.</returns>
public static ObjectContainerHeader Read(IDecoder decoder)
{
if (decoder == null)
{
throw new ArgumentNullException("decoder");
}
byte[] magic = decoder.DecodeFixed(Magic.Length);
if (!Magic.SequenceEqual(magic))
{
throw new SerializationException("Invalid Avro object container in a stream. The header cannot be recognized.");
}
var metadata = new Dictionary <string, byte[]>();
for (long currentChunkSize = decoder.DecodeMapChunk(); currentChunkSize != 0; currentChunkSize = decoder.DecodeMapChunk())
{
for (int i = 0; i < currentChunkSize; ++i)
{
string key = decoder.DecodeString();
byte[] value = decoder.DecodeByteArray();
metadata.Add(key, value);
}
}
byte[] syncMarker = decoder.DecodeFixed(16);
return(new ObjectContainerHeader(metadata, syncMarker));
}
protected override object DeserializeSafe(IDecoder decoder)
{
return(decoder.DecodeByteArray());
}
/// <summary>
/// Reads the header from the specified decoder.
/// </summary>
/// <param name="decoder">The decoder.</param>
/// <exception cref="System.Runtime.Serialization.SerializationException">Thrown when the object in the stream is not a valid Avro object container.</exception>
/// <returns>The header.</returns>
public static ObjectContainerHeader Read(IDecoder decoder)
{
if (decoder == null)
{
throw new ArgumentNullException("decoder");
}
byte[] magic = decoder.DecodeFixed(Magic.Length);
if (!Magic.SequenceEqual(magic))
{
throw new SerializationException("Invalid Avro object container in a stream. The header cannot be recognized.");
}
var metadata = new Dictionary<string, byte[]>();
for (long currentChunkSize = decoder.DecodeMapChunk(); currentChunkSize != 0; currentChunkSize = decoder.DecodeMapChunk())
{
for (int i = 0; i < currentChunkSize; ++i)
{
string key = decoder.DecodeString();
byte[] value = decoder.DecodeByteArray();
metadata.Add(key, value);
}
}
byte[] syncMarker = decoder.DecodeFixed(16);
return new ObjectContainerHeader(metadata, syncMarker);
}