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|
package localrepo
import (
"bytes"
"context"
"fmt"
"strconv"
"strings"
"testing"
"github.com/stretchr/testify/require"
"gitlab.com/gitlab-org/gitaly/v15/internal/command"
"gitlab.com/gitlab-org/gitaly/v15/internal/git"
"gitlab.com/gitlab-org/gitaly/v15/internal/git/catfile"
"gitlab.com/gitlab-org/gitaly/v15/internal/git/gittest"
"gitlab.com/gitlab-org/gitaly/v15/internal/git/repository"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitaly/config"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitaly/storage"
"gitlab.com/gitlab-org/gitaly/v15/internal/testhelper"
"gitlab.com/gitlab-org/gitaly/v15/internal/testhelper/testcfg"
"gitlab.com/gitlab-org/gitaly/v15/proto/go/gitalypb"
)
// Repo represents a local Git repository.
type Repo struct {
repository.GitRepo
locator storage.Locator
gitCmdFactory git.CommandFactory
catfileCache catfile.Cache
}
// New creates a new Repo from its protobuf representation.
func New(locator storage.Locator, gitCmdFactory git.CommandFactory, catfileCache catfile.Cache, repo repository.GitRepo) *Repo {
return &Repo{
GitRepo: repo,
locator: locator,
gitCmdFactory: gitCmdFactory,
catfileCache: catfileCache,
}
}
// NewTestRepo constructs a Repo. It is intended as a helper function for tests which assembles
// dependencies ad-hoc from the given config.
func NewTestRepo(t testing.TB, cfg config.Cfg, repo repository.GitRepo, factoryOpts ...git.ExecCommandFactoryOption) *Repo {
t.Helper()
if cfg.SocketPath != testcfg.UnconfiguredSocketPath {
repo = gittest.RewrittenRepository(testhelper.Context(t), t, cfg, &gitalypb.Repository{
StorageName: repo.GetStorageName(),
RelativePath: repo.GetRelativePath(),
GitObjectDirectory: repo.GetGitObjectDirectory(),
GitAlternateObjectDirectories: repo.GetGitAlternateObjectDirectories(),
})
}
gitCmdFactory, cleanup, err := git.NewExecCommandFactory(cfg, factoryOpts...)
t.Cleanup(cleanup)
require.NoError(t, err)
catfileCache := catfile.NewCache(cfg)
t.Cleanup(catfileCache.Stop)
locator := config.NewLocator(cfg)
return New(locator, gitCmdFactory, catfileCache, repo)
}
// Exec creates a git command with the given args and Repo, executed in the
// Repo. It validates the arguments in the command before executing.
func (repo *Repo) Exec(ctx context.Context, cmd git.Cmd, opts ...git.CmdOpt) (*command.Command, error) {
return repo.gitCmdFactory.New(ctx, repo, cmd, opts...)
}
// ExecAndWait is similar to Exec, but waits for the command to exit before
// returning.
func (repo *Repo) ExecAndWait(ctx context.Context, cmd git.Cmd, opts ...git.CmdOpt) error {
command, err := repo.Exec(ctx, cmd, opts...)
if err != nil {
return err
}
return command.Wait()
}
// GitVersion returns the Git version in use.
func (repo *Repo) GitVersion(ctx context.Context) (git.Version, error) {
return repo.gitCmdFactory.GitVersion(ctx)
}
func errorWithStderr(err error, stderr []byte) error {
if len(stderr) == 0 {
return err
}
return fmt.Errorf("%w, stderr: %q", err, stderr)
}
// repoSizeConfig can be used to pass in different options to
// git rev-list in determining the size of a repository.
type repoSizeConfig struct {
// ExcludeRefs is a list of ref glob patterns to exclude from the size
// calculation.
ExcludeRefs []string
// ExcludeAlternates will exclude objects in the alternates directory
// from being counted towards the total size of the repository.
ExcludeAlternates bool
}
// RepoSizeOption is an option which can be passed to Size
type RepoSizeOption func(*repoSizeConfig)
// WithExcludeRefs is an option for Size that excludes certain refs from the size
// calculation. The format must be a glob pattern.
// see https://git-scm.com/docs/git-rev-list#Documentation/git-rev-list.txt---excludeltglob-patterngt
func WithExcludeRefs(excludeRefs ...string) RepoSizeOption {
return func(cfg *repoSizeConfig) {
cfg.ExcludeRefs = excludeRefs
}
}
// WithoutAlternates will exclude any objects in the alternate objects directory
func WithoutAlternates() RepoSizeOption {
return func(cfg *repoSizeConfig) {
cfg.ExcludeAlternates = true
}
}
// Size calculates the size of all reachable objects in bytes
func (repo *Repo) Size(ctx context.Context, opts ...RepoSizeOption) (int64, error) {
var stdout bytes.Buffer
var cfg repoSizeConfig
for _, opt := range opts {
opt(&cfg)
}
var options []git.Option
for _, refToExclude := range cfg.ExcludeRefs {
options = append(
options,
git.Flag{Name: fmt.Sprintf("--exclude=%s", refToExclude)},
)
}
if cfg.ExcludeAlternates {
options = append(options,
git.Flag{Name: "--not"},
git.Flag{Name: "--alternate-refs"},
git.Flag{Name: "--not"},
)
}
options = append(options,
git.Flag{Name: "--all"},
git.Flag{Name: "--objects"},
git.Flag{Name: "--use-bitmap-index"},
git.Flag{Name: "--disk-usage"},
)
if err := repo.ExecAndWait(ctx,
git.SubCmd{
Name: "rev-list",
Flags: options,
},
git.WithStdout(&stdout),
); err != nil {
return -1, err
}
size, err := strconv.ParseInt(strings.TrimSuffix(stdout.String(), "\n"), 10, 64)
if err != nil {
return -1, err
}
return size, nil
}
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