xds: add config for random and maglev load balancer extensions

api/envoy/extensions/load_balancing_policies/least_request/v3/least_request.proto

@@ -17,11 +17,12 @@ option go_package = "github.com/envoyproxy/go-control-plane/envoy/extensions/loa
 option (udpa.annotations.file_status).package_version_status = ACTIVE;
 
 // [#protodoc-title: Least Request Load Balancing Policy]
+// [#not-implemented-hide:]
 
 // This configuration allows the built-in LEAST_REQUEST LB policy to be configured via the LB policy
 // extension point. See the :ref:`load balancing architecture overview
 // <arch_overview_load_balancing_types>` for more information.
-// [#extension: envoy.clusters.lb_policy]
+// [#extension: envoy.load_balancing_policies]
 message LeastRequest {
   // The number of random healthy hosts from which the host with the fewest active requests will
   // be chosen. Defaults to 2 so that we perform two-choice selection if the field is not set.

api/envoy/extensions/load_balancing_policies/maglev/v3/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"],
+)

api/envoy/extensions/load_balancing_policies/maglev/v3/maglev.proto

@@ -0,0 +1,29 @@
+syntax = "proto3";
+
+package envoy.extensions.load_balancing_policies.maglev.v3;
+
+import "google/protobuf/wrappers.proto";
+
+import "udpa/annotations/status.proto";
+import "validate/validate.proto";
+
+option java_package = "io.envoyproxy.envoy.extensions.load_balancing_policies.maglev.v3";
+option java_outer_classname = "MaglevProto";
+option java_multiple_files = true;
+option go_package = "github.com/envoyproxy/go-control-plane/envoy/extensions/load_balancing_policies/maglev/v3;maglevv3";
+option (udpa.annotations.file_status).package_version_status = ACTIVE;
+
+// [#protodoc-title: Maglev Load Balancing Policy]
+// [#not-implemented-hide:]
+
+// This configuration allows the built-in Maglev LB policy to be configured via the LB policy
+// extension point. See the :ref:`load balancing architecture overview
+// <arch_overview_load_balancing_types>` and :ref:`Maglev<arch_overview_load_balancing_types_maglev>` for more information.
+// [#extension: envoy.load_balancing_policies]
+message Maglev {
+  // The table size for Maglev hashing. Maglev aims for "minimal disruption" rather than an absolute guarantee.
+  // Minimal disruption means that when the set of upstream hosts change, a connection will likely be sent to the same
+  // upstream as it was before. Increasing the table size reduces the amount of disruption.
+  // The table size must be prime number limited to 5000011. If it is not specified, the default is 65537.
+  google.protobuf.UInt64Value table_size = 1 [(validate.rules).uint64 = {lte: 5000011}];
+}

api/envoy/extensions/load_balancing_policies/random/v3/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"],
+)

api/envoy/extensions/load_balancing_policies/random/v3/random.proto

@@ -0,0 +1,21 @@
+syntax = "proto3";
+
+package envoy.extensions.load_balancing_policies.random.v3;
+
+import "udpa/annotations/status.proto";
+
+option java_package = "io.envoyproxy.envoy.extensions.load_balancing_policies.random.v3";
+option java_outer_classname = "RandomProto";
+option java_multiple_files = true;
+option go_package = "github.com/envoyproxy/go-control-plane/envoy/extensions/load_balancing_policies/random/v3;randomv3";
+option (udpa.annotations.file_status).package_version_status = ACTIVE;
+
+// [#protodoc-title: Random Load Balancing Policy]
+// [#not-implemented-hide:]
+
+// This configuration allows the built-in Random LB policy to be configured via the LB policy
+// extension point. See the :ref:`load balancing architecture overview
+// <arch_overview_load_balancing_types>` for more information.
+// [#extension: envoy.load_balancing_policies]
+message Random {
+}

api/envoy/extensions/load_balancing_policies/ring_hash/v3/ring_hash.proto

@@ -14,11 +14,12 @@ option go_package = "github.com/envoyproxy/go-control-plane/envoy/extensions/loa
 option (udpa.annotations.file_status).package_version_status = ACTIVE;
 
 // [#protodoc-title: Ring Hash Load Balancing Policy]
+// [#not-implemented-hide:]
 
 // This configuration allows the built-in RING_HASH LB policy to be configured via the LB policy
 // extension point. See the :ref:`load balancing architecture overview
 // <arch_overview_load_balancing_types>` for more information.
-// [#extension: envoy.clusters.lb_policy]
+// [#extension: envoy.load_balancing_policies]
 // [#next-free-field: 6]
 message RingHash {
   // The hash function used to hash hosts onto the ketama ring.

api/envoy/extensions/load_balancing_policies/round_robin/v3/round_robin.proto

@@ -13,11 +13,12 @@ option go_package = "github.com/envoyproxy/go-control-plane/envoy/extensions/loa
 option (udpa.annotations.file_status).package_version_status = ACTIVE;
 
 // [#protodoc-title: Round Robin Load Balancing Policy]
+// [#not-implemented-hide:]
 
 // This configuration allows the built-in ROUND_ROBIN LB policy to be configured via the LB policy
 // extension point. See the :ref:`load balancing architecture overview
 // <arch_overview_load_balancing_types>` for more information.
-// [#extension: envoy.clusters.lb_policy]
+// [#extension: envoy.load_balancing_policies]
 message RoundRobin {
   // Configuration for slow start mode.
   // If this configuration is not set, slow start will not be not enabled.

api/envoy/extensions/load_balancing_policies/wrr_locality/v3/wrr_locality.proto

@@ -17,7 +17,7 @@ option (udpa.annotations.file_status).package_version_status = ACTIVE;
 
 // Configuration for the wrr_locality LB policy. See the :ref:`load balancing architecture overview
 // <arch_overview_load_balancing_types>` for more information.
-// [#extension: envoy.clusters.lb_policy]
+// [#extension: envoy.load_balancing_policies]
 message WrrLocality {
   // The child LB policy to create for endpoint-picking within the chosen locality.
   config.cluster.v3.LoadBalancingPolicy endpoint_picking_policy = 1

api/versioning/BUILD

@@ -177,6 +177,8 @@ proto_library(
         "//envoy/extensions/internal_redirect/safe_cross_scheme/v3:pkg",
         "//envoy/extensions/key_value/file_based/v3:pkg",
         "//envoy/extensions/load_balancing_policies/least_request/v3:pkg",
+        "//envoy/extensions/load_balancing_policies/maglev/v3:pkg",
+        "//envoy/extensions/load_balancing_policies/random/v3:pkg",
         "//envoy/extensions/load_balancing_policies/ring_hash/v3:pkg",
         "//envoy/extensions/load_balancing_policies/round_robin/v3:pkg",
         "//envoy/extensions/load_balancing_policies/wrr_locality/v3:pkg",