diff options
Diffstat (limited to 'src/core/lib/compression')
| -rw-r--r-- | src/core/lib/compression/algorithm_metadata.h | 14 | ||||
| -rw-r--r-- | src/core/lib/compression/compression.c | 98 |
2 files changed, 112 insertions, 0 deletions
diff --git a/src/core/lib/compression/algorithm_metadata.h b/src/core/lib/compression/algorithm_metadata.h index 4717af6e2b..08feafc1bb 100644 --- a/src/core/lib/compression/algorithm_metadata.h +++ b/src/core/lib/compression/algorithm_metadata.h @@ -26,13 +26,27 @@ grpc_slice grpc_compression_algorithm_slice( grpc_compression_algorithm algorithm); +/** Return stream compression algorithm based metadata value */ +grpc_slice grpc_stream_compression_algorithm_slice( + grpc_stream_compression_algorithm algorithm); + /** Return compression algorithm based metadata element (grpc-encoding: xxx) */ grpc_mdelem grpc_compression_encoding_mdelem( grpc_compression_algorithm algorithm); +/** Return stream compression algorithm based metadata element + * (content-encoding: xxx) */ +grpc_mdelem grpc_stream_compression_encoding_mdelem( + grpc_stream_compression_algorithm algorithm); + /** Find compression algorithm based on passed in mdstr - returns * GRPC_COMPRESS_ALGORITHM_COUNT on failure */ grpc_compression_algorithm grpc_compression_algorithm_from_slice( grpc_slice str); +/** Find stream compression algorithm based on passed in mdstr - returns + * GRPC_STREAM_COMPRESS_ALGORITHM_COUNT on failure */ +grpc_stream_compression_algorithm grpc_stream_compression_algorithm_from_slice( + grpc_slice str); + #endif /* GRPC_CORE_LIB_COMPRESSION_ALGORITHM_METADATA_H */ diff --git a/src/core/lib/compression/compression.c b/src/core/lib/compression/compression.c index 8deae2798f..972ce9324b 100644 --- a/src/core/lib/compression/compression.c +++ b/src/core/lib/compression/compression.c @@ -46,6 +46,19 @@ int grpc_compression_algorithm_parse(grpc_slice name, } } +int grpc_stream_compression_algorithm_parse( + grpc_slice name, grpc_stream_compression_algorithm *algorithm) { + if (grpc_slice_eq(name, GRPC_MDSTR_IDENTITY)) { + *algorithm = GRPC_STREAM_COMPRESS_NONE; + return 1; + } else if (grpc_slice_eq(name, GRPC_MDSTR_GZIP)) { + *algorithm = GRPC_STREAM_COMPRESS_GZIP; + return 1; + } else { + return 0; + } +} + int grpc_compression_algorithm_name(grpc_compression_algorithm algorithm, char **name) { GRPC_API_TRACE("grpc_compression_algorithm_parse(algorithm=%d, name=%p)", 2, @@ -66,6 +79,24 @@ int grpc_compression_algorithm_name(grpc_compression_algorithm algorithm, return 0; } +int grpc_stream_compression_algorithm_name( + grpc_stream_compression_algorithm algorithm, char **name) { + GRPC_API_TRACE( + "grpc_stream_compression_algorithm_parse(algorithm=%d, name=%p)", 2, + ((int)algorithm, name)); + switch (algorithm) { + case GRPC_STREAM_COMPRESS_NONE: + *name = "identity"; + return 1; + case GRPC_STREAM_COMPRESS_GZIP: + *name = "gzip"; + return 1; + case GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT: + return 0; + } + return 0; +} + grpc_compression_algorithm grpc_compression_algorithm_from_slice( grpc_slice str) { if (grpc_slice_eq(str, GRPC_MDSTR_IDENTITY)) return GRPC_COMPRESS_NONE; @@ -74,6 +105,13 @@ grpc_compression_algorithm grpc_compression_algorithm_from_slice( return GRPC_COMPRESS_ALGORITHMS_COUNT; } +grpc_stream_compression_algorithm grpc_stream_compression_algorithm_from_slice( + grpc_slice str) { + if (grpc_slice_eq(str, GRPC_MDSTR_IDENTITY)) return GRPC_STREAM_COMPRESS_NONE; + if (grpc_slice_eq(str, GRPC_MDSTR_GZIP)) return GRPC_STREAM_COMPRESS_GZIP; + return GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT; +} + grpc_slice grpc_compression_algorithm_slice( grpc_compression_algorithm algorithm) { switch (algorithm) { @@ -89,6 +127,19 @@ grpc_slice grpc_compression_algorithm_slice( return grpc_empty_slice(); } +grpc_slice grpc_stream_compression_algorithm_slice( + grpc_stream_compression_algorithm algorithm) { + switch (algorithm) { + case GRPC_STREAM_COMPRESS_NONE: + return GRPC_MDSTR_IDENTITY; + case GRPC_STREAM_COMPRESS_GZIP: + return GRPC_MDSTR_GZIP; + case GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT: + return grpc_empty_slice(); + } + return grpc_empty_slice(); +} + grpc_mdelem grpc_compression_encoding_mdelem( grpc_compression_algorithm algorithm) { switch (algorithm) { @@ -104,6 +155,19 @@ grpc_mdelem grpc_compression_encoding_mdelem( return GRPC_MDNULL; } +grpc_mdelem grpc_stream_compression_encoding_mdelem( + grpc_stream_compression_algorithm algorithm) { + switch (algorithm) { + case GRPC_STREAM_COMPRESS_NONE: + return GRPC_MDELEM_CONTENT_ENCODING_IDENTITY; + case GRPC_STREAM_COMPRESS_GZIP: + return GRPC_MDELEM_CONTENT_ENCODING_GZIP; + default: + break; + } + return GRPC_MDNULL; +} + void grpc_compression_options_init(grpc_compression_options *opts) { memset(opts, 0, sizeof(*opts)); /* all enabled by default */ @@ -126,6 +190,13 @@ int grpc_compression_options_is_algorithm_enabled( return GPR_BITGET(opts->enabled_algorithms_bitset, algorithm); } +int grpc_compression_options_is_stream_compression_algorithm_enabled( + const grpc_compression_options *opts, + grpc_stream_compression_algorithm algorithm) { + return GPR_BITGET(opts->enabled_stream_compression_algorithms_bitset, + algorithm); +} + /* TODO(dgq): Add the ability to specify parameters to the individual * compression algorithms */ grpc_compression_algorithm grpc_compression_algorithm_for_level( @@ -181,3 +252,30 @@ grpc_compression_algorithm grpc_compression_algorithm_for_level( abort(); }; } + +GRPCAPI grpc_stream_compression_algorithm +grpc_stream_compression_algorithm_for_level( + grpc_stream_compression_level level, uint32_t accepted_stream_encodings) { + GRPC_API_TRACE("grpc_stream_compression_algorithm_for_level(level=%d)", 1, + ((int)level)); + if (level > GRPC_STREAM_COMPRESS_LEVEL_HIGH) { + gpr_log(GPR_ERROR, "Unknown compression level %d.", (int)level); + abort(); + } + + switch (level) { + case GRPC_STREAM_COMPRESS_LEVEL_NONE: + return GRPC_STREAM_COMPRESS_NONE; + case GRPC_STREAM_COMPRESS_LEVEL_LOW: + case GRPC_STREAM_COMPRESS_LEVEL_MED: + case GRPC_STREAM_COMPRESS_LEVEL_HIGH: + if (GPR_BITGET(accepted_stream_encodings, GRPC_STREAM_COMPRESS_GZIP) == + 1) { + return GRPC_STREAM_COMPRESS_GZIP; + } else { + return GRPC_STREAM_COMPRESS_NONE; + } + default: + abort(); + } +} |