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|
package git
import (
"context"
"errors"
"fmt"
"path/filepath"
"gitlab.com/gitlab-org/gitaly/internal/git/hooks"
"gitlab.com/gitlab-org/gitaly/internal/git/repository"
"gitlab.com/gitlab-org/gitaly/internal/gitaly/config"
"gitlab.com/gitlab-org/gitaly/internal/log"
"gitlab.com/gitlab-org/gitaly/internal/metadata/featureflag"
"gitlab.com/gitlab-org/gitaly/internal/praefect/metadata"
"gitlab.com/gitlab-org/gitaly/proto/go/gitalypb"
)
// WithDisabledHooks returns an option that satisfies the requirement to set up
// hooks, but won't in fact set up hook execution.
func WithDisabledHooks() CmdOpt {
return func(cc *cmdCfg) error {
cc.hooksConfigured = true
return nil
}
}
// WithRefTxHook returns an option that populates the safe command with the
// environment variables necessary to properly execute a reference hook for
// repository changes that may possibly update references
func WithRefTxHook(ctx context.Context, repo repository.GitRepo, cfg config.Cfg) CmdOpt {
return func(cc *cmdCfg) error {
if repo == nil {
return fmt.Errorf("missing repo: %w", ErrInvalidArg)
}
// The reference-transaction hook does not need any project-specific information
// about the repository. So in order to make the hook usable by sites which do not
// have a project repository available (e.g. object pools), this function accepts a
// `repository.GitRepo` and just creates an ad-hoc proto repo.
if err := cc.configureHooks(ctx, &gitalypb.Repository{
StorageName: repo.GetStorageName(),
GitAlternateObjectDirectories: repo.GetGitAlternateObjectDirectories(),
GitObjectDirectory: repo.GetGitObjectDirectory(),
RelativePath: repo.GetRelativePath(),
}, cfg, nil, ReferenceTransactionHook); err != nil {
return fmt.Errorf("ref hook env var: %w", err)
}
return nil
}
}
// WithPackObjectsHookEnv provides metadata for gitaly-hooks so it can act as a pack-objects hook.
func WithPackObjectsHookEnv(ctx context.Context, repo *gitalypb.Repository, cfg config.Cfg) CmdOpt {
return func(cc *cmdCfg) error {
if repo == nil {
return fmt.Errorf("missing repo: %w", ErrInvalidArg)
}
if err := cc.configureHooks(ctx, repo, cfg, nil, PackObjectsHook); err != nil {
return fmt.Errorf("pack-objects hook configuration: %w", err)
}
cc.globals = append(cc.globals, ConfigPair{
Key: "uploadpack.packObjectsHook",
Value: filepath.Join(cfg.BinDir, "gitaly-hooks"),
})
return nil
}
}
// configureHooks updates the command configuration to include all environment
// variables required by the reference transaction hook and any other needed
// options to successfully execute hooks.
func (cc *cmdCfg) configureHooks(
ctx context.Context,
repo *gitalypb.Repository,
cfg config.Cfg,
receiveHooksPayload *ReceiveHooksPayload,
requestedHooks Hook,
) error {
if cc.hooksConfigured {
return errors.New("hooks already configured")
}
transaction, praefect, err := metadata.TransactionMetadataFromContext(ctx)
if err != nil {
return err
}
payload, err := NewHooksPayload(cfg, repo, transaction, praefect, receiveHooksPayload, requestedHooks, featureflag.RawFromContext(ctx)).Env()
if err != nil {
return err
}
cc.env = append(
cc.env,
payload,
"GITALY_BIN_DIR="+cfg.BinDir,
fmt.Sprintf("%s=%s", log.GitalyLogDirEnvKey, cfg.Logging.Dir),
)
cc.globals = append(cc.globals, ConfigPair{Key: "core.hooksPath", Value: hooks.Path(cfg)})
cc.hooksConfigured = true
return nil
}
// ReceivePackRequest abstracts away the different requests that end up
// spawning git-receive-pack.
type ReceivePackRequest interface {
GetGlId() string
GetGlUsername() string
GetGlRepository() string
GetRepository() *gitalypb.Repository
}
// WithReceivePackHooks returns an option that populates the safe command with the environment
// variables necessary to properly execute the pre-receive, update and post-receive hooks for
// git-receive-pack(1).
func WithReceivePackHooks(ctx context.Context, cfg config.Cfg, req ReceivePackRequest, protocol string) CmdOpt {
return func(cc *cmdCfg) error {
if err := cc.configureHooks(ctx, req.GetRepository(), cfg, &ReceiveHooksPayload{
UserID: req.GetGlId(),
Username: req.GetGlUsername(),
Protocol: protocol,
}, ReceivePackHooks); err != nil {
return err
}
return nil
}
}
|
