extensions: Graphite stats sink (#16703)

Signed-off-by: Pavel Fomin <mail@vaccarium.ru>

Mirrored from https://github.com/envoyproxy/envoy @ a6f397fdb0deea94c4fea9aecd921e774834d623

BUILD

@@ -267,6 +267,7 @@ proto_library(
         "//envoy/extensions/retry/host/omit_host_metadata/v3:pkg",
         "//envoy/extensions/retry/host/previous_hosts/v3:pkg",
         "//envoy/extensions/retry/priority/previous_priorities/v3:pkg",
+        "//envoy/extensions/stat_sinks/graphite_statsd/v3:pkg",
         "//envoy/extensions/stat_sinks/wasm/v3:pkg",
         "//envoy/extensions/transport_sockets/alts/v3:pkg",
         "//envoy/extensions/transport_sockets/proxy_protocol/v3:pkg",

envoy/extensions/stat_sinks/graphite_statsd/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/config/core/v3:pkg",
+        "@com_github_cncf_udpa//udpa/annotations:pkg",
+    ],
+)

envoy/extensions/stat_sinks/graphite_statsd/v3/graphite_statsd.proto

@@ -0,0 +1,44 @@
+syntax = "proto3";
+
+package envoy.extensions.stat_sinks.graphite_statsd.v3;
+
+import "envoy/config/core/v3/address.proto";
+
+import "google/protobuf/wrappers.proto";
+
+import "udpa/annotations/status.proto";
+import "validate/validate.proto";
+
+option java_package = "io.envoyproxy.envoy.extensions.stat_sinks.graphite_statsd.v3";
+option java_outer_classname = "GraphiteStatsdProto";
+option java_multiple_files = true;
+option (udpa.annotations.file_status).package_version_status = ACTIVE;
+
+// [#protodoc-title: Graphite+Statsd]
+// Stats configuration proto schema for ``envoy.stat_sinks.graphite_statsd`` sink.
+// The sink emits stats with `Graphite <https://graphite.readthedocs.io/en/latest/tags.html>`_
+// compatible tags. Tags are configurable via :ref:`StatsConfig
+// <envoy_v3_api_msg_config.metrics.v3.StatsConfig>`.
+// [#extension: envoy.stat_sinks.graphite_statsd]
+
+message GraphiteStatsdSink {
+  oneof statsd_specifier {
+    option (validate.required) = true;
+
+    // The UDP address of a running Graphite-compliant listener. If specified,
+    // statistics will be flushed to this address.
+    config.core.v3.Address address = 1;
+  }
+
+  // Optional custom metric name prefix. See :ref:`StatsdSink's prefix field
+  // <envoy_v3_api_field_config.metrics.v3.StatsdSink.prefix>` for more details.
+  string prefix = 3;
+
+  // Optional max datagram size to use when sending UDP messages. By default Envoy
+  // will emit one metric per datagram. By specifying a max-size larger than a single
+  // metric, Envoy will emit multiple, new-line separated metrics. The max datagram
+  // size should not exceed your network's MTU.
+  //
+  // Note that this value may not be respected if smaller than a single metric.
+  google.protobuf.UInt64Value max_bytes_per_datagram = 4 [(validate.rules).uint64 = {gt: 0}];
+}

versioning/BUILD

@@ -151,6 +151,7 @@ proto_library(
         "//envoy/extensions/retry/host/omit_host_metadata/v3:pkg",
         "//envoy/extensions/retry/host/previous_hosts/v3:pkg",
         "//envoy/extensions/retry/priority/previous_priorities/v3:pkg",
+        "//envoy/extensions/stat_sinks/graphite_statsd/v3:pkg",
         "//envoy/extensions/stat_sinks/wasm/v3:pkg",
         "//envoy/extensions/transport_sockets/alts/v3:pkg",
         "//envoy/extensions/transport_sockets/proxy_protocol/v3:pkg",