generic proxy: new kafka codec support (#31407)

* initial commit

Signed-off-by: wbpcode <wbphub@live.com>

* add more test

Signed-off-by: wbpcode <wbphub@live.com>

* complete test

Signed-off-by: wbpcode <wbphub@live.com>

* Kick CI

Signed-off-by: wbpcode <wbphub@live.com>

---------

Signed-off-by: wbpcode <wbphub@live.com>

Mirrored from https://github.com/envoyproxy/envoy @ b039d8a316a081d1eae3e3222e045b749d26765e

BUILD

@@ -82,6 +82,7 @@ proto_library(
         "//contrib/envoy/extensions/filters/network/client_ssl_auth/v3:pkg",
         "//contrib/envoy/extensions/filters/network/generic_proxy/action/v3:pkg",
         "//contrib/envoy/extensions/filters/network/generic_proxy/codecs/dubbo/v3:pkg",
+        "//contrib/envoy/extensions/filters/network/generic_proxy/codecs/kafka/v3:pkg",
         "//contrib/envoy/extensions/filters/network/generic_proxy/matcher/v3:pkg",
         "//contrib/envoy/extensions/filters/network/generic_proxy/router/v3:pkg",
         "//contrib/envoy/extensions/filters/network/generic_proxy/v3:pkg",

contrib/envoy/extensions/filters/network/generic_proxy/codecs/kafka/v3/BUILD

@@ -0,0 +1,12 @@
+# 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_xds//udpa/annotations:pkg",
+        "@com_github_cncf_xds//xds/annotations/v3:pkg",
+    ],
+)

contrib/envoy/extensions/filters/network/generic_proxy/codecs/kafka/v3/kafka.proto

@@ -0,0 +1,35 @@
+syntax = "proto3";
+
+package envoy.extensions.filters.network.generic_proxy.codecs.kafka.v3;
+
+import "xds/annotations/v3/status.proto";
+
+import "udpa/annotations/status.proto";
+
+option java_package = "io.envoyproxy.envoy.extensions.filters.network.generic_proxy.codecs.kafka.v3";
+option java_outer_classname = "KafkaProto";
+option java_multiple_files = true;
+option go_package = "github.com/envoyproxy/go-control-plane/contrib/envoy/extensions/filters/network/generic_proxy/codecs/kafka/v3;kafkav3";
+option (udpa.annotations.file_status).package_version_status = ACTIVE;
+option (xds.annotations.v3.file_status).work_in_progress = true;
+
+// [#protodoc-title: Kafka codec configuration for Generic Proxy]
+// [#extension: envoy.generic_proxy.codecs.kafka]
+
+// Configuration for Kafka codec. This codec gives the generic proxy the ability to proxy
+// Kafka traffic. But note any route configuration for Kafka traffic is not supported yet.
+// The generic proxy can only used to generate logs or metrics for Kafka traffic but cannot
+// do matching or routing.
+//
+// .. note::
+//   The codec can currently only be used in the sidecar mode. And to ensure the codec works
+//   properly, please make sure the following conditions are met:
+//
+//   1. The generic proxy must be configured with a wildcard route that matches all traffic.
+//   2. The target cluster must be configured as a original destination cluster.
+//   3. The :ref:`bind_upstream_connection
+//      <envoy_v3_api_field_extensions.filters.network.generic_proxy.router.v3.Router.bind_upstream_connection>`
+//      of generic proxy router must be set to true to ensure same upstream connection is used
+//      for all traffic from same downstream connection.
+message KafkaCodecConfig {
+}

versioning/BUILD

@@ -20,6 +20,7 @@ proto_library(
         "//contrib/envoy/extensions/filters/network/client_ssl_auth/v3:pkg",
         "//contrib/envoy/extensions/filters/network/generic_proxy/action/v3:pkg",
         "//contrib/envoy/extensions/filters/network/generic_proxy/codecs/dubbo/v3:pkg",
+        "//contrib/envoy/extensions/filters/network/generic_proxy/codecs/kafka/v3:pkg",
         "//contrib/envoy/extensions/filters/network/generic_proxy/matcher/v3:pkg",
         "//contrib/envoy/extensions/filters/network/generic_proxy/router/v3:pkg",
         "//contrib/envoy/extensions/filters/network/generic_proxy/v3:pkg",