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package repository
import (
"bytes"
"context"
"fmt"
"io"
"strconv"
"github.com/grpc-ecosystem/go-grpc-middleware/logging/logrus/ctxlogrus"
"gitlab.com/gitlab-org/gitaly/v15/internal/command"
gitalyerrors "gitlab.com/gitlab-org/gitaly/v15/internal/errors"
"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/gitpipe"
"gitlab.com/gitlab-org/gitaly/v15/internal/git/housekeeping"
"gitlab.com/gitlab-org/gitaly/v15/internal/git/localrepo"
"gitlab.com/gitlab-org/gitaly/v15/internal/git/objectpool"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitaly/storage"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitaly/transaction"
"gitlab.com/gitlab-org/gitaly/v15/internal/helper"
"gitlab.com/gitlab-org/gitaly/v15/internal/metadata/featureflag"
"gitlab.com/gitlab-org/gitaly/v15/proto/go/gitalypb"
)
// RepositorySize returns the size of the specified repository in kibibytes.
// By default, this calculation is performed using the disk usage command.
//
// Optionally the feature flags `revlist_for_repo_size` or `catfile_repo_size`
// can be enabled to log an alternative calculation of the repository size.
// The original size derived from disk usage is still returned.
//
// In conjunction with the other flags the `use_new_repository_size` feature
// flag can be enabled to return the alternative repository size calculation
// instead of the size derived from the disk usage command.
func (s *server) RepositorySize(ctx context.Context, in *gitalypb.RepositorySizeRequest) (*gitalypb.RepositorySizeResponse, error) {
if in.GetRepository() == nil {
return nil, helper.ErrInvalidArgument(gitalyerrors.ErrEmptyRepository)
}
repo := s.localrepo(in.GetRepository())
path, err := repo.Path()
if err != nil {
return nil, err
}
sizeKiB := getPathSize(ctx, path)
logger := ctxlogrus.Extract(ctx).WithField("repo_size_du_bytes", sizeKiB*1024)
var newSizeBytes int64
if featureflag.RevlistForRepoSize.IsEnabled(ctx) {
newSizeBytes, err = calculateSizeWithRevlist(ctx, repo)
if err != nil {
return nil, helper.ErrInternalf("calculating repository size with git-rev-list: %w", err)
}
logger.WithField("repo_size_revlist_bytes", newSizeBytes).Info("repository size calculated")
if featureflag.UseNewRepoSize.IsEnabled(ctx) {
sizeKiB = newSizeBytes / 1024
}
} else if featureflag.CatfileRepoSize.IsEnabled(ctx) {
newSizeBytes, err = calculateSizeWithCatfile(
ctx,
repo,
s.locator,
s.gitCmdFactory,
s.catfileCache,
s.txManager,
s.housekeepingManager,
)
if err != nil {
return nil, helper.ErrInternalf("calculating repository size with git-cat-file: %w", err)
}
logger.WithField("repo_size_catfile_bytes", newSizeBytes).Info("repository size calculated")
if featureflag.UseNewRepoSize.IsEnabled(ctx) {
sizeKiB = newSizeBytes / 1024
}
}
return &gitalypb.RepositorySizeResponse{Size: sizeKiB}, nil
}
// calculateSizeWithCatfile calculates the repository size using git-cat-file.
// In the case the repository belongs to a pool, it will subract the total
// size of the pool repository objects from its total size. One limitation of
// this approach is that we don't distinguish whether an object in the pool
// repository belongs to the fork repository, so in fact we may end up with a
// smaller total size and theoretically could go negative.
func calculateSizeWithCatfile(
ctx context.Context,
repo *localrepo.Repo,
locator storage.Locator,
gitCmdFactory git.CommandFactory,
catfileCache catfile.Cache,
txManager transaction.Manager,
housekeepingManager housekeeping.Manager,
) (int64, error) {
var size int64
catfileInfoIterator := gitpipe.CatfileInfoAllObjects(
ctx,
repo,
gitpipe.WithDiskUsageSize(),
)
for catfileInfoIterator.Next() {
size += catfileInfoIterator.Result().ObjectSize()
}
if err := catfileInfoIterator.Err(); err != nil {
return 0, err
}
var poolSize int64
if pool, err := objectpool.FromRepo(
locator,
gitCmdFactory,
catfileCache,
txManager,
housekeepingManager,
repo,
); err == nil && pool != nil {
catfileInfoIterator = gitpipe.CatfileInfoAllObjects(
ctx,
pool.Repo,
gitpipe.WithDiskUsageSize(),
)
for catfileInfoIterator.Next() {
poolSize += catfileInfoIterator.Result().ObjectSize()
}
if err := catfileInfoIterator.Err(); err != nil {
return 0, err
}
}
size -= poolSize
// return the size in bytes
return size, nil
}
func calculateSizeWithRevlist(ctx context.Context, repo *localrepo.Repo) (int64, error) {
var excludes []string
for refPrefix := range git.InternalRefPrefixes {
excludes = append(excludes, refPrefix+"*")
}
size, err := repo.Size(
ctx,
localrepo.WithExcludeRefs(excludes...),
localrepo.WithoutAlternates(),
)
if err != nil {
return 0, err
}
// return the size in bytes
return size, nil
}
func (s *server) GetObjectDirectorySize(ctx context.Context, in *gitalypb.GetObjectDirectorySizeRequest) (*gitalypb.GetObjectDirectorySizeResponse, error) {
if in.GetRepository() == nil {
return nil, helper.ErrInvalidArgument(gitalyerrors.ErrEmptyRepository)
}
repo := s.localrepo(in.GetRepository())
path, err := repo.ObjectDirectoryPath()
if err != nil {
return nil, err
}
return &gitalypb.GetObjectDirectorySizeResponse{Size: getPathSize(ctx, path)}, nil
}
func getPathSize(ctx context.Context, path string) int64 {
cmd, err := command.New(ctx, []string{"du", "-sk", path})
if err != nil {
ctxlogrus.Extract(ctx).WithError(err).Warn("ignoring du command error")
return 0
}
sizeLine, err := io.ReadAll(cmd)
if err != nil {
ctxlogrus.Extract(ctx).WithError(err).Warn("ignoring command read error")
return 0
}
if err := cmd.Wait(); err != nil {
ctxlogrus.Extract(ctx).WithError(err).Warn("ignoring du wait error")
return 0
}
sizeParts := bytes.Split(sizeLine, []byte("\t"))
if len(sizeParts) != 2 {
ctxlogrus.Extract(ctx).Warn(fmt.Sprintf("ignoring du malformed output: %q", sizeLine))
return 0
}
size, err := strconv.ParseInt(string(sizeParts[0]), 10, 0)
if err != nil {
ctxlogrus.Extract(ctx).WithError(err).Warn("ignoring parsing size error")
return 0
}
return size
}
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