go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/bisection/util/bqutil/schema.go (about)

     1  // Copyright 2023 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 bqutil
    16  
    17  import (
    18  	"cloud.google.com/go/bigquery"
    19  	desc "github.com/golang/protobuf/protoc-gen-go/descriptor"
    20  
    21  	"go.chromium.org/luci/common/bq"
    22  	"go.chromium.org/luci/common/errors"
    23  	"go.chromium.org/luci/common/proto/google/descutil"
    24  )
    25  
    26  // GenerateSchema generates BigQuery schema for the given proto message
    27  // using the given set of message definitions.
    28  func GenerateSchema(fdset *desc.FileDescriptorSet, message string) (schema bigquery.Schema, err error) {
    29  	conv := bq.SchemaConverter{
    30  		Desc:           fdset,
    31  		SourceCodeInfo: make(map[*desc.FileDescriptorProto]bq.SourceCodeInfoMap, len(fdset.File)),
    32  	}
    33  	for _, f := range fdset.File {
    34  		conv.SourceCodeInfo[f], err = descutil.IndexSourceCodeInfo(f)
    35  		if err != nil {
    36  			return nil, errors.Annotate(err, "failed to index source code info in file %q", f.GetName()).Err()
    37  		}
    38  	}
    39  	schema, _, err = conv.Schema(message)
    40  	return schema, err
    41  }