http: add Kill Request HTTP filter (#14170)

Add a KillRequest HTTP filter which can crash Envoy when receiving a Kill request. It will be used to fault inject kill request to Envoy and measure the blast radius.

Risk Level: Low, new feature.
Testing: Unit/integration tests.
Docs Changes: Added
Release Notes: Added
Issue: #13978

Signed-off-by: Qin Qin <qqin@google.com>

Mirrored from https://github.com/envoyproxy/envoy @ 237b29d6399953f22a47c6e4d19df74b4fbcee8d

BUILD

@@ -190,6 +190,7 @@ proto_library(
         "//envoy/extensions/filters/http/health_check/v3:pkg",
         "//envoy/extensions/filters/http/ip_tagging/v3:pkg",
         "//envoy/extensions/filters/http/jwt_authn/v3:pkg",
+        "//envoy/extensions/filters/http/kill_request/v3:pkg",
         "//envoy/extensions/filters/http/local_ratelimit/v3:pkg",
         "//envoy/extensions/filters/http/lua/v3:pkg",
         "//envoy/extensions/filters/http/oauth2/v3alpha:pkg",

envoy/extensions/filters/http/kill_request/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 = [
+        "//envoy/type/v3:pkg",
+        "@com_github_cncf_udpa//udpa/annotations:pkg",
+    ],
+)

envoy/extensions/filters/http/kill_request/v3/kill_request.proto

@@ -0,0 +1,23 @@
+syntax = "proto3";
+
+package envoy.extensions.filters.http.kill_request.v3;
+
+import "envoy/type/v3/percent.proto";
+
+import "udpa/annotations/status.proto";
+import "udpa/annotations/versioning.proto";
+
+option java_package = "io.envoyproxy.envoy.extensions.filters.http.kill_request.v3";
+option java_outer_classname = "KillRequestProto";
+option java_multiple_files = true;
+option (udpa.annotations.file_status).package_version_status = ACTIVE;
+
+// [#protodoc-title: Kill Request]
+// Kill Request :ref:`configuration overview <config_http_filters_kill_request>`.
+// [#extension: envoy.filters.http.kill_request]
+
+// Configuration for KillRequest filter.
+message KillRequest {
+  // The probability that a Kill request will be triggered.
+  type.v3.FractionalPercent probability = 1;
+}

versioning/BUILD

@@ -73,6 +73,7 @@ proto_library(
         "//envoy/extensions/filters/http/health_check/v3:pkg",
         "//envoy/extensions/filters/http/ip_tagging/v3:pkg",
         "//envoy/extensions/filters/http/jwt_authn/v3:pkg",
+        "//envoy/extensions/filters/http/kill_request/v3:pkg",
         "//envoy/extensions/filters/http/local_ratelimit/v3:pkg",
         "//envoy/extensions/filters/http/lua/v3:pkg",
         "//envoy/extensions/filters/http/oauth2/v3alpha:pkg",