// DecompressWire wraps a wire.ReadContext into a decompressor, according to the given settings,
// so that any messages read through the returned ReadContext will first be decompressed.
func DecompressWire(ctx *wire.ReadContext, compression *CompressionSettings) (*wire.ReadContext, error) {
if compression == nil {
return nil, errors.Wrap(fmt.Errorf("no compression specified"), 1)
}
if compression.Algorithm == CompressionAlgorithm_NONE {
return ctx, nil
}
decompressor := decompressors[compression.Algorithm]
if decompressor == nil {
return nil, errors.Wrap(fmt.Errorf("no compressor registered for %s", compression.Algorithm.String()), 1)
}
compressedReader, err := decompressor.Apply(ctx.Reader())
if err != nil {
return nil, errors.Wrap(err, 1)
}
return wire.NewReadContext(compressedReader), nil
}
