Built motion from commit 6a09e18b.|2.6.11

[motion2.git] / legacy-libs / grpc / deps / grpc / src / core / ext / filters / client_channel / backend_metric.cc

diff --git a/legacy-libs/grpc/deps/grpc/src/core/ext/filters/client_channel/backend_metric.cc b/legacy-libs/grpc/deps/grpc/src/core/ext/filters/client_channel/backend_metric.cc
new file mode 100644 (file)
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+++ b/legacy-libs/grpc/deps/grpc/src/core/ext/filters/client_channel/backend_metric.cc
@@ -0,0 +1,78 @@
+//
+// Copyright 2019 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/backend_metric.h"
+
+#include "src/core/lib/gprpp/string_view.h"
+#include "udpa/data/orca/v1/orca_load_report.upb.h"
+
+namespace grpc_core {
+
+namespace {
+
+template <typename EntryType>
+Map<StringView, double, StringLess> ParseMap(
+    udpa_data_orca_v1_OrcaLoadReport* msg,
+    EntryType** (*entry_func)(udpa_data_orca_v1_OrcaLoadReport*, size_t*),
+    upb_strview (*key_func)(const EntryType*),
+    double (*value_func)(const EntryType*), Arena* arena) {
+  Map<StringView, double, StringLess> result;
+  size_t size;
+  const auto* const* entries = entry_func(msg, &size);
+  for (size_t i = 0; i < size; ++i) {
+    upb_strview key_view = key_func(entries[i]);
+    char* key = static_cast<char*>(arena->Alloc(key_view.size + 1));
+    memcpy(key, key_view.data, key_view.size);
+    result[StringView(key, key_view.size)] = value_func(entries[i]);
+  }
+  return result;
+}
+
+}  // namespace
+
+const LoadBalancingPolicy::BackendMetricData* ParseBackendMetricData(
+    const grpc_slice& serialized_load_report, Arena* arena) {
+  upb::Arena upb_arena;
+  udpa_data_orca_v1_OrcaLoadReport* msg =
+      udpa_data_orca_v1_OrcaLoadReport_parse(
+          reinterpret_cast<const char*>(
+              GRPC_SLICE_START_PTR(serialized_load_report)),
+          GRPC_SLICE_LENGTH(serialized_load_report), upb_arena.ptr());
+  if (msg == nullptr) return nullptr;
+  LoadBalancingPolicy::BackendMetricData* backend_metric_data =
+      arena->New<LoadBalancingPolicy::BackendMetricData>();
+  backend_metric_data->cpu_utilization =
+      udpa_data_orca_v1_OrcaLoadReport_cpu_utilization(msg);
+  backend_metric_data->mem_utilization =
+      udpa_data_orca_v1_OrcaLoadReport_mem_utilization(msg);
+  backend_metric_data->requests_per_second =
+      udpa_data_orca_v1_OrcaLoadReport_rps(msg);
+  backend_metric_data->request_cost =
+      ParseMap<udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry>(
+          msg, udpa_data_orca_v1_OrcaLoadReport_mutable_request_cost,
+          udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_key,
+          udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_value, arena);
+  backend_metric_data->utilization =
+      ParseMap<udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry>(
+          msg, udpa_data_orca_v1_OrcaLoadReport_mutable_utilization,
+          udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_key,
+          udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_value, arena);
+  return backend_metric_data;
+}
+
+}  // namespace grpc_core