compression: create a decompressor extensibility point and move gzip decompressor (#10744)

creates decompressors as an extension point and moves the zlib based gzip decompressor.

Signed-off-by: Jose Nino <jnino@lyft.com>

Mirrored from https://github.com/envoyproxy/envoy @ 520e0c7050564ac7886129a87290e9e433470efd

BUILD

@@ -162,6 +162,7 @@ proto_library(
         "//envoy/extensions/common/ratelimit/v3:pkg",
         "//envoy/extensions/common/tap/v3:pkg",
         "//envoy/extensions/compression/gzip/compressor/v3:pkg",
+        "//envoy/extensions/compression/gzip/decompressor/v3:pkg",
         "//envoy/extensions/filters/common/fault/v3:pkg",
         "//envoy/extensions/filters/http/adaptive_concurrency/v3:pkg",
         "//envoy/extensions/filters/http/aws_lambda/v3:pkg",

envoy/extensions/compression/gzip/compressor/v3/gzip.proto

@@ -13,7 +13,7 @@ option java_outer_classname = "GzipProto";
 option java_multiple_files = true;
 option (udpa.annotations.file_status).package_version_status = ACTIVE;
 
-// [#protodoc-title: Gzip]
+// [#protodoc-title: Gzip Compressor]
 // [#extension: envoy.compression.gzip.compressor]
 
 // [#next-free-field: 6]

envoy/extensions/compression/gzip/decompressor/v3/BUILD

@@ -0,0 +1,9 @@
+# DO NOT EDIT. This file is generated by tools/proto_sync.py.
+
+load("@envoy_api//bazel:api_build_system.bzl", "api_proto_package")
+
+licenses(["notice"])  # Apache 2
+
+api_proto_package(
+    deps = ["@com_github_cncf_udpa//udpa/annotations:pkg"],
+)

envoy/extensions/compression/gzip/decompressor/v3/gzip.proto

@@ -0,0 +1,30 @@
+syntax = "proto3";
+
+package envoy.extensions.compression.gzip.decompressor.v3;
+
+import "google/protobuf/wrappers.proto";
+
+import "udpa/annotations/migrate.proto";
+import "udpa/annotations/status.proto";
+import "udpa/annotations/versioning.proto";
+import "validate/validate.proto";
+
+option java_package = "io.envoyproxy.envoy.extensions.compression.gzip.decompressor.v3";
+option java_outer_classname = "GzipProto";
+option java_multiple_files = true;
+option (udpa.annotations.file_status).package_version_status = ACTIVE;
+
+// [#protodoc-title: Gzip Decompressor]
+// [#extension: envoy.compression.gzip.decompressor]
+
+message Gzip {
+  // Value from 9 to 15 that represents the base two logarithmic of the decompressor's window size.
+  // The decompression window size needs to be equal or larger than the compression window size.
+  // The default is 15 per zlib's manual. For more details about this parameter, please refer to
+  // zlib manual > inflateInit2.
+  google.protobuf.UInt32Value window_bits = 1 [(validate.rules).uint32 = {lte: 15 gte: 9}];
+
+  // Value for zlib's decompressor output buffer. If not set, defaults to 4096.
+  // See https://www.zlib.net/manual.html for more details.
+  google.protobuf.UInt32Value chunk_size = 2 [(validate.rules).uint32 = {lte: 65536 gte: 4096}];
+}

versioning/BUILD

@@ -45,6 +45,7 @@ proto_library(
         "//envoy/extensions/common/ratelimit/v3:pkg",
         "//envoy/extensions/common/tap/v3:pkg",
         "//envoy/extensions/compression/gzip/compressor/v3:pkg",
+        "//envoy/extensions/compression/gzip/decompressor/v3:pkg",
         "//envoy/extensions/filters/common/fault/v3:pkg",
         "//envoy/extensions/filters/http/adaptive_concurrency/v3:pkg",
         "//envoy/extensions/filters/http/aws_lambda/v3:pkg",