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package gitalybackup
import (
"context"
"encoding/json"
"errors"
"fmt"
"io"
"runtime"
"time"
cli "github.com/urfave/cli/v2"
"gitlab.com/gitlab-org/gitaly/v16/internal/backup"
"gitlab.com/gitlab-org/gitaly/v16/internal/gitaly/storage"
"gitlab.com/gitlab-org/gitaly/v16/internal/grpc/client"
"gitlab.com/gitlab-org/gitaly/v16/internal/log"
"gitlab.com/gitlab-org/gitaly/v16/proto/go/gitalypb"
)
type serverRepository struct {
storage.ServerInfo
StorageName string `json:"storage_name"`
RelativePath string `json:"relative_path"`
GlProjectPath string `json:"gl_project_path"`
}
type createSubcommand struct {
backupPath string
parallel int
parallelStorage int
layout string
incremental bool
backupID string
serverSide bool
}
func (cmd *createSubcommand) flags(ctx *cli.Context) {
cmd.backupPath = ctx.String("path")
cmd.parallel = ctx.Int("parallel")
cmd.parallelStorage = ctx.Int("parallel-storage")
cmd.layout = ctx.String("layout")
cmd.incremental = ctx.Bool("incremental")
cmd.backupID = ctx.String("id")
cmd.serverSide = ctx.Bool("server-side")
}
func createFlags() []cli.Flag {
return []cli.Flag{
&cli.StringFlag{
Name: "path",
Usage: "repository backup path",
},
&cli.IntFlag{
Name: "parallel",
Usage: "maximum number of parallel backups",
Value: runtime.NumCPU(),
},
&cli.IntFlag{
Name: "parallel-storage",
Usage: "maximum number of parallel backups per storage. Note: actual parallelism when combined with `-parallel` depends on the order the repositories are received.",
Value: 2,
},
&cli.StringFlag{
Name: "layout",
Usage: "how backup files are located. Either pointer or legacy.",
Value: "pointer",
},
&cli.BoolFlag{
Name: "incremental",
Usage: "creates an incremental backup if possible.",
Value: false,
},
&cli.StringFlag{
Name: "id",
Usage: "the backup ID used when creating a full backup.",
Value: time.Now().UTC().Format("20060102150405"),
},
&cli.BoolFlag{
Name: "server-side",
Usage: "use server-side backups. Note: The feature is not ready for production use.",
Value: false,
},
}
}
func newCreateCommand() *cli.Command {
return &cli.Command{
Name: "create",
Usage: "Create backup file",
Action: createAction,
Flags: createFlags(),
}
}
func createAction(cctx *cli.Context) error {
logger, err := log.Configure(cctx.App.Writer, "json", "")
if err != nil {
fmt.Printf("configuring logger failed: %v", err)
return err
}
ctx, err := storage.InjectGitalyServersEnv(context.Background())
if err != nil {
logger.Error(err.Error())
return err
}
subcmd := createSubcommand{}
subcmd.flags(cctx)
if err := subcmd.run(ctx, logger, cctx.App.Reader); err != nil {
logger.Error(err.Error())
return err
}
return nil
}
func (cmd *createSubcommand) run(ctx context.Context, logger log.Logger, stdin io.Reader) error {
pool := client.NewPool(client.WithDialOptions(client.UnaryInterceptor(), client.StreamInterceptor()))
defer func() {
_ = pool.Close()
}()
var manager backup.Strategy
if cmd.serverSide {
if cmd.backupPath != "" {
return fmt.Errorf("create: path cannot be used with server-side backups")
}
manager = backup.NewServerSideAdapter(pool)
} else {
sink, err := backup.ResolveSink(ctx, cmd.backupPath)
if err != nil {
return fmt.Errorf("create: resolve sink: %w", err)
}
locator, err := backup.ResolveLocator(cmd.layout, sink)
if err != nil {
return fmt.Errorf("create: resolve locator: %w", err)
}
manager = backup.NewManager(sink, locator, pool)
}
var opts []backup.PipelineOption
if cmd.parallel > 0 || cmd.parallelStorage > 0 {
opts = append(opts, backup.WithConcurrency(cmd.parallel, cmd.parallelStorage))
}
pipeline, err := backup.NewPipeline(logger, opts...)
if err != nil {
return fmt.Errorf("create pipeline: %w", err)
}
decoder := json.NewDecoder(stdin)
for {
var sr serverRepository
if err := decoder.Decode(&sr); errors.Is(err, io.EOF) {
break
} else if err != nil {
return fmt.Errorf("create: %w", err)
}
repo := gitalypb.Repository{
StorageName: sr.StorageName,
RelativePath: sr.RelativePath,
GlProjectPath: sr.GlProjectPath,
}
pipeline.Handle(ctx, backup.NewCreateCommand(manager, backup.CreateRequest{
Server: sr.ServerInfo,
Repository: &repo,
VanityRepository: &repo,
Incremental: cmd.incremental,
BackupID: cmd.backupID,
}))
}
if err := pipeline.Done(); err != nil {
return fmt.Errorf("create: %w", err)
}
return nil
}
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