go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/common/api/gerrit/demo/main.go (about)

     1  // Copyright 2020 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  // This is a bare bone script that interact with Gerrit using Gerrit REST
    16  // client for testing purpose. It calls GetChange with ChangeId 1111 by
    17  // default. Modify the api to call and the input to the api in
    18  // `callAndPrintResp` func to test your change.
    19  
    20  package main
    21  
    22  import (
    23  	"context"
    24  	"fmt"
    25  	"net/http"
    26  	"os"
    27  	"os/signal"
    28  
    29  	"go.chromium.org/luci/common/api/gerrit"
    30  	"go.chromium.org/luci/common/errors"
    31  	gerritpb "go.chromium.org/luci/common/proto/gerrit"
    32  	"google.golang.org/protobuf/encoding/protojson"
    33  )
    34  
    35  const gerritHost = "chromium-review.googlesource.com"
    36  
    37  func main() {
    38  	ctx, cancel := context.WithCancel(context.Background())
    39  	defer cancel()
    40  	interrupt := make(chan os.Signal, 1)
    41  	signal.Notify(interrupt, os.Interrupt)
    42  	go func() {
    43  		<-interrupt
    44  		cancel()
    45  	}()
    46  
    47  	runWithCtx(ctx)
    48  }
    49  
    50  func runWithCtx(ctx context.Context) {
    51  	client, err := gerrit.NewRESTClient(&http.Client{}, gerritHost, false)
    52  	if err != nil {
    53  		fmt.Fprintf(os.Stderr, "error while creating gerrit REST client: %s\n", err)
    54  		os.Exit(1)
    55  	}
    56  	errC := make(chan error)
    57  	go func() {
    58  		errC <- callAndPrintResp(ctx, client)
    59  	}()
    60  	select {
    61  	case <-ctx.Done():
    62  		fmt.Fprintln(os.Stderr, ctx.Err())
    63  		os.Exit(1)
    64  	case err := <-errC:
    65  		if err != nil {
    66  			fmt.Fprintln(os.Stderr, err)
    67  			os.Exit(1)
    68  		}
    69  	}
    70  }
    71  
    72  func callAndPrintResp(ctx context.Context, client gerritpb.GerritClient) error {
    73  	resp, err := client.GetChange(ctx, &gerritpb.GetChangeRequest{
    74  		Number: 2653292,
    75  		Options: []gerritpb.QueryOption{
    76  			gerritpb.QueryOption_DETAILED_LABELS,
    77  			gerritpb.QueryOption_DETAILED_ACCOUNTS,
    78  		},
    79  	})
    80  	if err != nil {
    81  		return errors.Annotate(err, "calling gerrit").Err()
    82  	}
    83  
    84  	m := &protojson.MarshalOptions{
    85  		Indent: "  ",
    86  	}
    87  	b, err := m.Marshal(resp)
    88  	if err != nil {
    89  		return errors.Annotate(err, "marshal response proto").Err()
    90  	}
    91  	_, err = os.Stdout.Write(b)
    92  	return err
    93  }