Use opencensus::tags::TagKey.

opencensus::stats::TagKey is deprecated.

src/core/ext/filters/load_reporting/registered_opencensus_objects.h

@@ -22,6 +22,7 @@
 #include <grpc/support/port_platform.h>
 
 #include "opencensus/stats/stats.h"
+#include "opencensus/tags/tag_key.h"
 
 #include "src/cpp/server/load_reporter/constants.h"
 
@@ -80,33 +81,33 @@ inline ::opencensus::stats::MeasureDouble MeasureOtherCallMetric() {
 
 // Tags.
 
-inline ::opencensus::stats::TagKey TagKeyToken() {
-  static const ::opencensus::stats::TagKey token =
-      opencensus::stats::TagKey::Register(kTagKeyToken);
+inline ::opencensus::tags::TagKey TagKeyToken() {
+  static const ::opencensus::tags::TagKey token =
+      opencensus::tags::TagKey::Register(kTagKeyToken);
   return token;
 }
 
-inline ::opencensus::stats::TagKey TagKeyHost() {
-  static const ::opencensus::stats::TagKey token =
-      opencensus::stats::TagKey::Register(kTagKeyHost);
+inline ::opencensus::tags::TagKey TagKeyHost() {
+  static const ::opencensus::tags::TagKey token =
+      opencensus::tags::TagKey::Register(kTagKeyHost);
   return token;
 }
 
-inline ::opencensus::stats::TagKey TagKeyUserId() {
-  static const ::opencensus::stats::TagKey token =
-      opencensus::stats::TagKey::Register(kTagKeyUserId);
+inline ::opencensus::tags::TagKey TagKeyUserId() {
+  static const ::opencensus::tags::TagKey token =
+      opencensus::tags::TagKey::Register(kTagKeyUserId);
   return token;
 }
 
-inline ::opencensus::stats::TagKey TagKeyStatus() {
-  static const ::opencensus::stats::TagKey token =
-      opencensus::stats::TagKey::Register(kTagKeyStatus);
+inline ::opencensus::tags::TagKey TagKeyStatus() {
+  static const ::opencensus::tags::TagKey token =
+      opencensus::tags::TagKey::Register(kTagKeyStatus);
   return token;
 }
 
-inline ::opencensus::stats::TagKey TagKeyMetricName() {
-  static const ::opencensus::stats::TagKey token =
-      opencensus::stats::TagKey::Register(kTagKeyMetricName);
+inline ::opencensus::tags::TagKey TagKeyMetricName() {
+  static const ::opencensus::tags::TagKey token =
+      opencensus::tags::TagKey::Register(kTagKeyMetricName);
   return token;
 }
 

src/cpp/ext/filters/census/grpc_plugin.cc

@@ -22,6 +22,7 @@
 
 #include <grpcpp/server_context.h>
 
+#include "opencensus/tags/tag_key.h"
 #include "opencensus/trace/span.h"
 #include "src/cpp/ext/filters/census/channel_filter.h"
 #include "src/cpp/ext/filters/census/client_filter.h"
@@ -33,27 +34,27 @@ namespace grpc {
 // These measure definitions should be kept in sync across opencensus
 // implementations--see
 // https://github.com/census-instrumentation/opencensus-java/blob/master/contrib/grpc_metrics/src/main/java/io/opencensus/contrib/grpc/metrics/RpcMeasureConstants.java.
-::opencensus::stats::TagKey ClientMethodTagKey() {
+::opencensus::tags::TagKey ClientMethodTagKey() {
   static const auto method_tag_key =
-      ::opencensus::stats::TagKey::Register("grpc_client_method");
+      ::opencensus::tags::TagKey::Register("grpc_client_method");
   return method_tag_key;
 }
 
-::opencensus::stats::TagKey ClientStatusTagKey() {
+::opencensus::tags::TagKey ClientStatusTagKey() {
   static const auto status_tag_key =
-      ::opencensus::stats::TagKey::Register("grpc_client_status");
+      ::opencensus::tags::TagKey::Register("grpc_client_status");
   return status_tag_key;
 }
 
-::opencensus::stats::TagKey ServerMethodTagKey() {
+::opencensus::tags::TagKey ServerMethodTagKey() {
   static const auto method_tag_key =
-      ::opencensus::stats::TagKey::Register("grpc_server_method");
+      ::opencensus::tags::TagKey::Register("grpc_server_method");
   return method_tag_key;
 }
 
-::opencensus::stats::TagKey ServerStatusTagKey() {
+::opencensus::tags::TagKey ServerStatusTagKey() {
   static const auto status_tag_key =
-      ::opencensus::stats::TagKey::Register("grpc_server_status");
+      ::opencensus::tags::TagKey::Register("grpc_server_status");
   return status_tag_key;
 }
 

src/cpp/ext/filters/census/grpc_plugin.h

@@ -24,6 +24,7 @@
 #include "absl/strings/string_view.h"
 #include "include/grpcpp/opencensus.h"
 #include "opencensus/stats/stats.h"
+#include "opencensus/tags/tag_key.h"
 
 namespace grpc_impl {
 class ServerContext;
@@ -32,10 +33,10 @@ class ServerContext;
 namespace grpc {
 
 // The tag keys set when recording RPC stats.
-::opencensus::stats::TagKey ClientMethodTagKey();
-::opencensus::stats::TagKey ClientStatusTagKey();
-::opencensus::stats::TagKey ServerMethodTagKey();
-::opencensus::stats::TagKey ServerStatusTagKey();
+::opencensus::tags::TagKey ClientMethodTagKey();
+::opencensus::tags::TagKey ClientStatusTagKey();
+::opencensus::tags::TagKey ServerMethodTagKey();
+::opencensus::tags::TagKey ServerStatusTagKey();
 
 // Names of measures used by the plugin--users can create views on these
 // measures but should not record data for them.

src/cpp/server/load_reporter/load_reporter.cc

@@ -29,6 +29,7 @@
 #include "src/cpp/server/load_reporter/load_reporter.h"
 
 #include "opencensus/stats/internal/set_aggregation_window.h"
+#include "opencensus/tags/tag_key.h"
 
 namespace grpc {
 namespace load_reporter {
@@ -38,12 +39,12 @@ CpuStatsProvider::CpuStatsSample CpuStatsProviderDefaultImpl::GetCpuStats() {
 }
 
 CensusViewProvider::CensusViewProvider()
-    : tag_key_token_(::opencensus::stats::TagKey::Register(kTagKeyToken)),
-      tag_key_host_(::opencensus::stats::TagKey::Register(kTagKeyHost)),
-      tag_key_user_id_(::opencensus::stats::TagKey::Register(kTagKeyUserId)),
-      tag_key_status_(::opencensus::stats::TagKey::Register(kTagKeyStatus)),
+    : tag_key_token_(::opencensus::tags::TagKey::Register(kTagKeyToken)),
+      tag_key_host_(::opencensus::tags::TagKey::Register(kTagKeyHost)),
+      tag_key_user_id_(::opencensus::tags::TagKey::Register(kTagKeyUserId)),
+      tag_key_status_(::opencensus::tags::TagKey::Register(kTagKeyStatus)),
       tag_key_metric_name_(
-          ::opencensus::stats::TagKey::Register(kTagKeyMetricName)) {
+          ::opencensus::tags::TagKey::Register(kTagKeyMetricName)) {
   // One view related to starting a call.
   auto vd_start_count =
       ::opencensus::stats::ViewDescriptor()

src/cpp/server/load_reporter/load_reporter.h

@@ -34,6 +34,7 @@
 #include "src/proto/grpc/lb/v1/load_reporter.grpc.pb.h"
 
 #include "opencensus/stats/stats.h"
+#include "opencensus/tags/tag_key.h"
 
 namespace grpc {
 namespace load_reporter {
@@ -75,11 +76,11 @@ class CensusViewProvider {
  private:
   ViewDescriptorMap view_descriptor_map_;
   // Tag keys.
-  ::opencensus::stats::TagKey tag_key_token_;
-  ::opencensus::stats::TagKey tag_key_host_;
-  ::opencensus::stats::TagKey tag_key_user_id_;
-  ::opencensus::stats::TagKey tag_key_status_;
-  ::opencensus::stats::TagKey tag_key_metric_name_;
+  ::opencensus::tags::TagKey tag_key_token_;
+  ::opencensus::tags::TagKey tag_key_host_;
+  ::opencensus::tags::TagKey tag_key_user_id_;
+  ::opencensus::tags::TagKey tag_key_status_;
+  ::opencensus::tags::TagKey tag_key_metric_name_;
 };
 
 // The default implementation fetches the real stats from Census.