contrib: add Hyperscan regex engine (#21973)

Commit Message: contrib: add Hyperscan regex engine
Additional Description: Hyperscan has been introduced as an input matcher earlier this year. Since the regex engine interface has been completed, the patch extent the usage of Hyperscan into a contrib regex engine.
Risk Level: Low
Testing: Unit
Docs Changes: API
Release Notes: N/A
Platform Specific Features: Requires processor with SSSE3 support (nearly any modern x86 processor)

Signed-off-by: Xie Zhihao <zhihao.xie@intel.com>

Mirrored from https://github.com/envoyproxy/envoy @ 725d0b4b3e6fb84aa7dfd1ca4d5792f2dc4558b2

BUILD

@@ -89,6 +89,7 @@ proto_library(
         "//contrib/envoy/extensions/network/connection_balance/dlb/v3alpha:pkg",
         "//contrib/envoy/extensions/private_key_providers/cryptomb/v3alpha:pkg",
         "//contrib/envoy/extensions/private_key_providers/qat/v3alpha:pkg",
+        "//contrib/envoy/extensions/regex_engines/hyperscan/v3alpha:pkg",
         "//contrib/envoy/extensions/vcl/v3alpha:pkg",
         "//envoy/admin/v3:pkg",
         "//envoy/config/accesslog/v3:pkg",

contrib/envoy/extensions/matching/input_matchers/hyperscan/v3alpha/hyperscan.proto

@@ -14,14 +14,9 @@ option (udpa.annotations.file_status).package_version_status = ACTIVE;
 // [#protodoc-title: Hyperscan matcher]
 // [#extension: envoy.matching.input_matchers.hyperscan]
 
-// `Hyperscan <https://github.com/intel/hyperscan>`_ regex matcher. The engine of the matcher uses
-// hybrid automata techniques to allow simultaneous matching of large numbers of regular
-// expressions across streams of data.
-//
-// The matcher follows PCRE pattern syntax, and the regex string must adhere to the documented
-// `pattern support <https://intel.github.io/hyperscan/dev-reference/compilation.html#pattern-support>`_.
-// The syntax is not compatible with the default RE2 regex matcher. Depending on configured expressions,
-// swapping regex matcher may cause match rules to no longer be valid.
+// `Hyperscan <https://github.com/intel/hyperscan>`_ regex matcher. The matcher uses the Hyperscan
+// engine which exploits x86 SIMD instructions to accelerate matching large numbers of regular
+// expressions simultaneously across streams of data.
 message Hyperscan {
   // [#next-free-field: 11]
   message Regex {

contrib/envoy/extensions/regex_engines/hyperscan/v3alpha/BUILD

@@ -0,0 +1,9 @@
+# DO NOT EDIT. This file is generated by tools/proto_format/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"],
+)

contrib/envoy/extensions/regex_engines/hyperscan/v3alpha/hyperscan.proto

@@ -0,0 +1,25 @@
+syntax = "proto3";
+
+package envoy.extensions.regex_engines.hyperscan.v3alpha;
+
+import "udpa/annotations/status.proto";
+
+option java_package = "io.envoyproxy.envoy.extensions.regex_engines.hyperscan.v3alpha";
+option java_outer_classname = "HyperscanProto";
+option java_multiple_files = true;
+option go_package = "github.com/envoyproxy/go-control-plane/envoy/extensions/regex_engines/hyperscan/v3alpha";
+option (udpa.annotations.file_status).package_version_status = ACTIVE;
+
+// [#protodoc-title: Hyperscan]
+// [#extension: envoy.regex_engines.hyperscan]
+
+// `Hyperscan <https://github.com/intel/hyperscan>`_ regex engine. The engine uses hybrid automata
+// techniques to allow simultaneous matching of large numbers of regular expressions across streams
+// of data.
+//
+// The engine follows PCRE pattern syntax, and the regex string must adhere to the documented
+// `pattern support <https://intel.github.io/hyperscan/dev-reference/compilation.html#pattern-support>`_.
+// The syntax is not compatible with the default RE2 regex engine. Depending on configured
+// expressions, swapping regex engine may cause match rules to no longer be valid.
+message Hyperscan {
+}

versioning/BUILD

@@ -26,6 +26,7 @@ proto_library(
         "//contrib/envoy/extensions/network/connection_balance/dlb/v3alpha:pkg",
         "//contrib/envoy/extensions/private_key_providers/cryptomb/v3alpha:pkg",
         "//contrib/envoy/extensions/private_key_providers/qat/v3alpha:pkg",
+        "//contrib/envoy/extensions/regex_engines/hyperscan/v3alpha:pkg",
         "//contrib/envoy/extensions/vcl/v3alpha:pkg",
         "//envoy/admin/v3:pkg",
         "//envoy/config/accesslog/v3:pkg",