ads: support envoy filter local ratelimit.

Signed-off-by: yuan <[email protected]>

api/filter/ratelimit.proto

@@ -0,0 +1,57 @@
+syntax = "proto3";
+
+package filter;
+option go_package = "kmesh.net/kmesh/api/filter;filter";
+
+/*
+  TokenBucket defines parameters for a token bucket rate limiter.
+  https://www.envoyproxy.io/docs/envoy/latest/api-v3/type/v3/token_bucket.proto#envoy-v3-api-msg-type-v3-tokenbucket
+  {
+      "max_tokens": ...,
+      "tokens_per_fill": {...},
+      "fill_interval": {...}
+  }
+*/
+message TokenBucket {
+  // The maximum number of tokens in the bucket.
+  int64 max_tokens = 1;
+
+  // The number of tokens added to the bucket during each fill interval.
+  int64 tokens_per_fill = 2;
+
+  // The interval at which the bucket is refilled in nanoseconds.
+  int64 fill_interval = 3;
+}
+
+
+/*
+  LocalRateLimit defines parameters for local rate limiting.
+  https://www.envoyproxy.io/docs/envoy/latest/api-v3/extensions/filters/http/local_ratelimit/v3/local_rate_limit.proto#envoy-v3-api-msg-extensions-filters-http-local-ratelimit-v3-localratelimit
+  {
+      "stat_prefix": ...,
+      "status": {...},
+      "token_bucket": {...},
+      "filter_enabled": {...},
+      "filter_enforced": {...},
+      "request_headers_to_add_when_not_enforced": [],
+      "response_headers_to_add": [],
+      "descriptors": [],
+      "stage": ...,
+      "local_rate_limit_per_downstream_connection": ...,
+      "local_cluster_rate_limit": {...},
+      "enable_x_ratelimit_headers": ...,
+      "vh_rate_limits": ...,
+      "always_consume_default_token_bucket": {...},
+      "rate_limited_as_resource_exhausted": ...
+  }
+*/
+message LocalRateLimit {
+  reserved 1 to 2;
+
+  // The token bucket configuration for the rate limiter.
+  TokenBucket token_bucket = 3;
+
+  // Reserved field numbers for future use
+  reserved 4 to 15;
+}
+

api/listener/listener_components.proto

@@ -6,12 +6,14 @@ option go_package = "kmesh.net/kmesh/api/listener;listener";
 import "api/core/address.proto";
 import "api/filter/tcp_proxy.proto";
 import "api/filter/http_connection_manager.proto";
+import "api/filter/ratelimit.proto";
 
 message Filter {
   string name = 1;
   oneof config_type {
     filter.TcpProxy tcp_proxy = 2;
     filter.HttpConnectionManager http_connection_manager = 3;
+    filter.LocalRateLimit local_rate_limit = 4;
   }
 }
 

api/v2-c/filter/ratelimit.pb-c.c

@@ -0,0 +1,201 @@
+/* Generated by the protocol buffer compiler.  DO NOT EDIT! */
+/* Generated from: api/filter/ratelimit.proto */
+
+/* Do not generate deprecated warnings for self */
+#ifndef PROTOBUF_C__NO_DEPRECATED
+#define PROTOBUF_C__NO_DEPRECATED
+#endif
+
+#include "filter/ratelimit.pb-c.h"
+void   filter__token_bucket__init
+                     (Filter__TokenBucket         *message)
+{
+  static const Filter__TokenBucket init_value = FILTER__TOKEN_BUCKET__INIT;
+  *message = init_value;
+}
+size_t filter__token_bucket__get_packed_size
+                     (const Filter__TokenBucket *message)
+{
+  assert(message->base.descriptor == &filter__token_bucket__descriptor);
+  return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message));
+}
+size_t filter__token_bucket__pack
+                     (const Filter__TokenBucket *message,
+                      uint8_t       *out)
+{
+  assert(message->base.descriptor == &filter__token_bucket__descriptor);
+  return protobuf_c_message_pack ((const ProtobufCMessage*)message, out);
+}
+size_t filter__token_bucket__pack_to_buffer
+                     (const Filter__TokenBucket *message,
+                      ProtobufCBuffer *buffer)
+{
+  assert(message->base.descriptor == &filter__token_bucket__descriptor);
+  return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer);
+}
+Filter__TokenBucket *
+       filter__token_bucket__unpack
+                     (ProtobufCAllocator  *allocator,
+                      size_t               len,
+                      const uint8_t       *data)
+{
+  return (Filter__TokenBucket *)
+     protobuf_c_message_unpack (&filter__token_bucket__descriptor,
+                                allocator, len, data);
+}
+void   filter__token_bucket__free_unpacked
+                     (Filter__TokenBucket *message,
+                      ProtobufCAllocator *allocator)
+{
+  if(!message)
+    return;
+  assert(message->base.descriptor == &filter__token_bucket__descriptor);
+  protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator);
+}
+void   filter__local_rate_limit__init
+                     (Filter__LocalRateLimit         *message)
+{
+  static const Filter__LocalRateLimit init_value = FILTER__LOCAL_RATE_LIMIT__INIT;
+  *message = init_value;
+}
+size_t filter__local_rate_limit__get_packed_size
+                     (const Filter__LocalRateLimit *message)
+{
+  assert(message->base.descriptor == &filter__local_rate_limit__descriptor);
+  return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message));
+}
+size_t filter__local_rate_limit__pack
+                     (const Filter__LocalRateLimit *message,
+                      uint8_t       *out)
+{
+  assert(message->base.descriptor == &filter__local_rate_limit__descriptor);
+  return protobuf_c_message_pack ((const ProtobufCMessage*)message, out);
+}
+size_t filter__local_rate_limit__pack_to_buffer
+                     (const Filter__LocalRateLimit *message,
+                      ProtobufCBuffer *buffer)
+{
+  assert(message->base.descriptor == &filter__local_rate_limit__descriptor);
+  return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer);
+}
+Filter__LocalRateLimit *
+       filter__local_rate_limit__unpack
+                     (ProtobufCAllocator  *allocator,
+                      size_t               len,
+                      const uint8_t       *data)
+{
+  return (Filter__LocalRateLimit *)
+     protobuf_c_message_unpack (&filter__local_rate_limit__descriptor,
+                                allocator, len, data);
+}
+void   filter__local_rate_limit__free_unpacked
+                     (Filter__LocalRateLimit *message,
+                      ProtobufCAllocator *allocator)
+{
+  if(!message)
+    return;
+  assert(message->base.descriptor == &filter__local_rate_limit__descriptor);
+  protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator);
+}
+static const ProtobufCFieldDescriptor filter__token_bucket__field_descriptors[3] =
+{
+  {
+    "max_tokens",
+    1,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_INT64,
+    0,   /* quantifier_offset */
+    offsetof(Filter__TokenBucket, max_tokens),
+    NULL,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "tokens_per_fill",
+    2,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_INT64,
+    0,   /* quantifier_offset */
+    offsetof(Filter__TokenBucket, tokens_per_fill),
+    NULL,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "fill_interval",
+    3,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_INT64,
+    0,   /* quantifier_offset */
+    offsetof(Filter__TokenBucket, fill_interval),
+    NULL,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+};
+static const unsigned filter__token_bucket__field_indices_by_name[] = {
+  2,   /* field[2] = fill_interval */
+  0,   /* field[0] = max_tokens */
+  1,   /* field[1] = tokens_per_fill */
+};
+static const ProtobufCIntRange filter__token_bucket__number_ranges[1 + 1] =
+{
+  { 1, 0 },
+  { 0, 3 }
+};
+const ProtobufCMessageDescriptor filter__token_bucket__descriptor =
+{
+  PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC,
+  "filter.TokenBucket",
+  "TokenBucket",
+  "Filter__TokenBucket",
+  "filter",
+  sizeof(Filter__TokenBucket),
+  3,
+  filter__token_bucket__field_descriptors,
+  filter__token_bucket__field_indices_by_name,
+  1,  filter__token_bucket__number_ranges,
+  (ProtobufCMessageInit) filter__token_bucket__init,
+  NULL,NULL,NULL    /* reserved[123] */
+};
+static const ProtobufCFieldDescriptor filter__local_rate_limit__field_descriptors[1] =
+{
+  {
+    "token_bucket",
+    3,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    0,   /* quantifier_offset */
+    offsetof(Filter__LocalRateLimit, token_bucket),
+    &filter__token_bucket__descriptor,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+};
+static const unsigned filter__local_rate_limit__field_indices_by_name[] = {
+  0,   /* field[0] = token_bucket */
+};
+static const ProtobufCIntRange filter__local_rate_limit__number_ranges[1 + 1] =
+{
+  { 3, 0 },
+  { 0, 1 }
+};
+const ProtobufCMessageDescriptor filter__local_rate_limit__descriptor =
+{
+  PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC,
+  "filter.LocalRateLimit",
+  "LocalRateLimit",
+  "Filter__LocalRateLimit",
+  "filter",
+  sizeof(Filter__LocalRateLimit),
+  1,
+  filter__local_rate_limit__field_descriptors,
+  filter__local_rate_limit__field_indices_by_name,
+  1,  filter__local_rate_limit__number_ranges,
+  (ProtobufCMessageInit) filter__local_rate_limit__init,
+  NULL,NULL,NULL    /* reserved[123] */
+};