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repo.go
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repo.go
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package bpm
import (
"context"
"os"
"path/filepath"
"strings"
"github.com/blobcache/bpm/internal/dbutil"
"github.com/blobcache/bpm/internal/porting"
"github.com/blobcache/bpm/internal/sqlstores"
"github.com/blobcache/glfs"
"github.com/brendoncarroll/go-state/posixfs"
"github.com/brendoncarroll/stdctx/logctx"
"github.com/jmoiron/sqlx"
)
const bpmPath = ".bpm"
type Repo struct {
db *sqlx.DB
dir posixfs.FS
glfsOp glfs.Operator
}
func New(db *sqlx.DB, dir posixfs.FS) *Repo {
return &Repo{
db: db,
dir: dir,
glfsOp: glfs.NewOperator(),
}
}
// Init creates a new repo under the path p, which must be a directory
func Init(ctx context.Context, p string) error {
logctx.Infof(ctx, "initializing repo at %q", p)
if err := os.Mkdir(filepath.Join(p, bpmPath), 0o755); err != nil {
return err
}
return nil
}
// Open opens the repo in the directory at p
func Open(p string) (*Repo, error) {
_, err := os.Stat(filepath.Join(p, bpmPath))
if err != nil {
return nil, err
}
dbPath := filepath.Join(p, bpmPath, "bpm.db")
db, err := dbutil.OpenDB(dbPath)
if err != nil {
return nil, err
}
if err := setupDB(context.Background(), db); err != nil {
return nil, err
}
return New(db, posixfs.NewDirFS(p)), nil
}
// DeploymentDir is the directory in the filesystem used for deployments
func (r *Repo) DeploymentDir() posixfs.FS {
return posixfs.NewFiltered(r.dir, func(x string) bool {
isInternal := strings.HasPrefix(x, ".bpm/") || x == ".bpm"
return !isInternal
})
}
// actualize ensures that the filesystem matches tlds
func (r *Repo) actualize(ctx context.Context, tlds map[string]glfs.Ref) error {
dirfs := r.DeploymentDir()
exp := porting.NewExporter(dirfs, fsCache{r.db}, true)
for path, ref := range tlds {
path := path
ref := ref
storeID, err := dbutil.DoTx1(ctx, r.db, func(tx *sqlx.Tx) (uint64, error) {
aid, err := lookupAssetByRoot(tx, ref)
if err != nil {
return 0, err
}
return getAssetStore(tx, aid)
})
if err != nil {
return err
}
s := sqlstores.NewStore(r.db, Hash, MaxBlobSize, storeID)
logctx.Infof(ctx, "exporting %v => %v", path, ref.CID)
if err := exp.Export(ctx, s, path, ref); err != nil {
return err
}
}
return nil
}
type fsCache struct {
db *sqlx.DB
}
func (c fsCache) Get(ctx context.Context, p string) (*porting.CacheEntry, error) {
return nil, nil
}
func (c fsCache) Put(ctx context.Context, p string, ent porting.CacheEntry) error {
return nil
}