go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/grpc/cmd/prpc/descriptor.go (about)

     1  // Copyright 2016 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 main
    16  
    17  import (
    18  	"context"
    19  	"fmt"
    20  
    21  	"go.chromium.org/luci/grpc/discovery"
    22  	"go.chromium.org/luci/grpc/prpc"
    23  )
    24  
    25  type serverDescription struct {
    26  	*discovery.DescribeResponse
    27  }
    28  
    29  func loadDescription(ctx context.Context, client *prpc.Client) (*serverDescription, error) {
    30  	dc := discovery.NewDiscoveryPRPCClient(client)
    31  	res, err := dc.Describe(ctx, &discovery.Void{})
    32  	if err != nil {
    33  		return nil, fmt.Errorf("could not load server description: %s", err)
    34  	}
    35  
    36  	return &serverDescription{res}, nil
    37  }