Grcov report - config.cc

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#include "source/extensions/compression/gzip/decompressor/config.h"

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namespace Envoy {

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namespace Extensions {

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namespace Compression {

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namespace Gzip {

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namespace Decompressor {

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namespace {

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const uint32_t DefaultWindowBits = 15;

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const uint32_t DefaultChunkSize = 4096;

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// When logical OR'ed to window bits, this tells zlib library to decompress gzip data per:

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// inflateInit2 in https://www.zlib.net/manual.html

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const uint32_t GzipHeaderValue = 16;

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const uint64_t DefaultMaxInflateRatio = 100;

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} // namespace

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GzipDecompressorFactory::GzipDecompressorFactory(

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    const envoy::extensions::compression::gzip::decompressor::v3::Gzip& gzip, Stats::Scope& scope)

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    : scope_(scope),

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      window_bits_(PROTOBUF_GET_WRAPPED_OR_DEFAULT(gzip, window_bits, DefaultWindowBits) |

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                   GzipHeaderValue),

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      chunk_size_(PROTOBUF_GET_WRAPPED_OR_DEFAULT(gzip, chunk_size, DefaultChunkSize)),

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      max_inflate_ratio_(

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          PROTOBUF_GET_WRAPPED_OR_DEFAULT(gzip, max_inflate_ratio, DefaultMaxInflateRatio)) {}

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Envoy::Compression::Decompressor::DecompressorPtr

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GzipDecompressorFactory::createDecompressor(const std::string& stats_prefix) {

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  auto decompressor =

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      std::make_unique<ZlibDecompressorImpl>(scope_, stats_prefix, chunk_size_, max_inflate_ratio_);

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  decompressor->init(window_bits_);

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  return decompressor;

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Envoy::Compression::Decompressor::DecompressorFactoryPtr

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GzipDecompressorLibraryFactory::createDecompressorFactoryFromProtoTyped(

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    const envoy::extensions::compression::gzip::decompressor::v3::Gzip& proto_config,

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    Server::Configuration::FactoryContext& context) {

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  return std::make_unique<GzipDecompressorFactory>(proto_config, context.scope());

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/**

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 * Static registration for the gzip decompressor. @see NamedDecompressorLibraryConfigFactory.

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*/

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REGISTER_FACTORY(GzipDecompressorLibraryFactory,

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                 Envoy::Compression::Decompressor::NamedDecompressorLibraryConfigFactory);

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} // namespace Decompressor

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} // namespace Gzip

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} // namespace Compression

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} // namespace Extensions

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} // namespace Envoy