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package backup
import (
"context"
"errors"
"fmt"
"io"
"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/structerr"
"gitlab.com/gitlab-org/gitaly/v16/proto/go/gitalypb"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
// ServerSideAdapter allows calling the server-side backup RPCs `BackupRepository`
// and `RestoreRepository` through `backup.Strategy` such that server-side
// backups can be used with `backup.Pipeline`.
type ServerSideAdapter struct {
pool *client.Pool
}
// NewServerSideAdapter creates and returns initialized *ServerSideAdapter instance.
func NewServerSideAdapter(pool *client.Pool) *ServerSideAdapter {
return &ServerSideAdapter{
pool: pool,
}
}
// Create calls the BackupRepository RPC.
func (ss ServerSideAdapter) Create(ctx context.Context, req *CreateRequest) error {
if err := setContextServerInfo(ctx, &req.Server, req.Repository.GetStorageName()); err != nil {
return fmt.Errorf("server-side create: %w", err)
}
client, err := ss.newRepoClient(ctx, req.Server)
if err != nil {
return fmt.Errorf("server-side create: %w", err)
}
_, err = client.BackupRepository(ctx, &gitalypb.BackupRepositoryRequest{
Repository: req.Repository,
VanityRepository: req.VanityRepository,
BackupId: req.BackupID,
Incremental: req.Incremental,
})
if err != nil {
st := status.Convert(err)
if st.Code() == codes.NotFound {
return fmt.Errorf("server-side create: %w: %s", ErrSkipped, err.Error())
}
for _, detail := range st.Details() {
switch detail.(type) {
case *gitalypb.BackupRepositoryResponse_SkippedError:
return fmt.Errorf("server-side create: %w: %s", ErrSkipped, err.Error())
}
}
return fmt.Errorf("server-side create: %w", err)
}
return nil
}
// Restore calls the RestoreRepository RPC.
func (ss ServerSideAdapter) Restore(ctx context.Context, req *RestoreRequest) error {
if err := setContextServerInfo(ctx, &req.Server, req.Repository.GetStorageName()); err != nil {
return fmt.Errorf("server-side restore: %w", err)
}
client, err := ss.newRepoClient(ctx, req.Server)
if err != nil {
return fmt.Errorf("server-side restore: %w", err)
}
_, err = client.RestoreRepository(ctx, &gitalypb.RestoreRepositoryRequest{
Repository: req.Repository,
VanityRepository: req.VanityRepository,
AlwaysCreate: req.AlwaysCreate,
BackupId: req.BackupID,
})
if err != nil {
st := status.Convert(err)
for _, detail := range st.Details() {
switch detail.(type) {
case *gitalypb.RestoreRepositoryResponse_SkippedError:
return fmt.Errorf("server-side restore: %w: %s", ErrSkipped, err.Error())
}
}
return structerr.New("server-side restore: %w", err)
}
return nil
}
// RemoveRepository removes the specified repository from its storage.
func (ss ServerSideAdapter) RemoveRepository(ctx context.Context, req *RemoveRepositoryRequest) error {
if err := setContextServerInfo(ctx, &req.Server, req.Repo.StorageName); err != nil {
return fmt.Errorf("server-side remove repo: set context: %w", err)
}
repoClient, err := ss.newRepoClient(ctx, req.Server)
if err != nil {
return fmt.Errorf("server-side remove repo: create client: %w", err)
}
_, err = repoClient.RemoveRepository(ctx, &gitalypb.RemoveRepositoryRequest{Repository: req.Repo})
if err != nil {
return fmt.Errorf("server-side remove repo: remove: %w", err)
}
return nil
}
// ListRepositories returns a list of repositories found in the given storage.
func (ss ServerSideAdapter) ListRepositories(ctx context.Context, req *ListRepositoriesRequest) (repos []*gitalypb.Repository, err error) {
if err := setContextServerInfo(ctx, &req.Server, req.StorageName); err != nil {
return nil, fmt.Errorf("server-side list repos: set context: %w", err)
}
internalClient, err := ss.newInternalClient(ctx, req.Server)
if err != nil {
return nil, fmt.Errorf("server-side list repos: create client: %w", err)
}
stream, err := internalClient.WalkRepos(ctx, &gitalypb.WalkReposRequest{StorageName: req.StorageName})
if err != nil {
return nil, fmt.Errorf("server-side list repos: walk: %w", err)
}
for {
resp, err := stream.Recv()
if errors.Is(err, io.EOF) {
break
}
if err != nil {
return nil, err
}
repos = append(repos, &gitalypb.Repository{RelativePath: resp.RelativePath, StorageName: req.StorageName})
}
return repos, nil
}
func (ss ServerSideAdapter) newRepoClient(ctx context.Context, server storage.ServerInfo) (gitalypb.RepositoryServiceClient, error) {
conn, err := ss.pool.Dial(ctx, server.Address, server.Token)
if err != nil {
return nil, err
}
return gitalypb.NewRepositoryServiceClient(conn), nil
}
func (ss ServerSideAdapter) newInternalClient(ctx context.Context, server storage.ServerInfo) (gitalypb.InternalGitalyClient, error) {
conn, err := ss.pool.Dial(ctx, server.Address, server.Token)
if err != nil {
return nil, err
}
return gitalypb.NewInternalGitalyClient(conn), nil
}
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