kythe.io@v0.0.68-0.20240422202219-7225dbc01741/kythe/go/extractors/cmd/bazel/extract_kzip/extract_kzip.go (about)

     1  /*
     2   * Copyright 2017 The Kythe Authors. All rights reserved.
     3   *
     4   * Licensed under the Apache License, Version 2.0 (the "License");
     5   * you may not use this file except in compliance with the License.
     6   * You may obtain a copy of the License at
     7   *
     8   *   http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  
    17  // Program extract_kzip implements a Bazel extra action that captures a Kythe
    18  // compilation record for a "spawn" action.
    19  package main
    20  
    21  import (
    22  	"context"
    23  	"flag"
    24  	"time"
    25  
    26  	"kythe.io/kythe/go/extractors/bazel"
    27  	"kythe.io/kythe/go/extractors/bazel/extutil"
    28  	"kythe.io/kythe/go/util/log"
    29  )
    30  
    31  var (
    32  	outputPath = flag.String("output", "", "Path of output index file (required)")
    33  
    34  	settings bazel.Settings
    35  )
    36  
    37  func init() {
    38  	flag.Usage = settings.SetFlags(nil, "")
    39  }
    40  
    41  func main() {
    42  	flag.Parse()
    43  
    44  	// Verify that required flags are set.
    45  	if *outputPath == "" {
    46  		log.Fatal("You must provide a non-empty --output file path")
    47  	}
    48  
    49  	config, info, err := bazel.NewFromSettings(settings)
    50  	if err != nil {
    51  		log.Fatalf("Invalid config settings: %v", err)
    52  	}
    53  
    54  	ctx := context.Background()
    55  	start := time.Now()
    56  	ai, err := bazel.SpawnAction(info)
    57  	if err != nil {
    58  		log.Fatalf("Invalid extra action: %v", err)
    59  	}
    60  	if err := extutil.ExtractAndWrite(ctx, config, ai, *outputPath); err != nil {
    61  		log.Fatalf("Extraction failed: %v", err)
    62  	}
    63  	log.Infof("Finished extracting [%v elapsed]", time.Since(start))
    64  }