go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/teams/internal/span/tagging.go (about)

     1  // Copyright 2024 The LUCI Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package span
    16  
    17  import (
    18  	"context"
    19  
    20  	"google.golang.org/grpc"
    21  
    22  	"go.chromium.org/luci/server/span"
    23  )
    24  
    25  // SpannerDefaultsInterceptor returns a gRPC interceptor that adds default
    26  // Spanner request options to the context.
    27  //
    28  // The request tag will be set the to RPC method name.
    29  //
    30  // See also ModifyRequestOptions in luci/server/span.
    31  func SpannerDefaultsInterceptor() grpc.UnaryServerInterceptor {
    32  	return func(ctx context.Context, req any, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (resp any, err error) {
    33  		ctx = span.ModifyRequestOptions(ctx, func(opts *span.RequestOptions) {
    34  			opts.Tag = info.FullMethod
    35  		})
    36  		return handler(ctx, req)
    37  	}
    38  }