pkgdash/storage/postgres/storage.go

178 lines
3.6 KiB
Go

package postgres
import (
"context"
"database/sql"
"embed"
"errors"
pb "go.unistack.org/unistack-org/pkgdash/proto/go_generate"
"github.com/golang-migrate/migrate/v4"
mpgx "github.com/golang-migrate/migrate/v4/database/pgx"
"github.com/golang-migrate/migrate/v4/source/iofs"
"github.com/lib/pq"
"go.unistack.org/micro/v3/logger"
"go.unistack.org/unistack-org/pkgdash/config"
"go.unistack.org/unistack-org/pkgdash/models"
)
const (
pathMigration = `migrations/postgres`
)
type Postgres struct {
db *sql.DB
fs embed.FS
}
func NewStorage(db *sql.DB) (interface{}, error) {
return &Postgres{db: db}, nil
}
func NewStorageFS(fs embed.FS) func(*sql.DB) (interface{}, error) {
return func(db *sql.DB) (interface{}, error) {
return &Postgres{db: db, fs: fs}, nil
}
}
func (s *Postgres) MigrateUp() error {
driver, err := mpgx.WithInstance(s.db, &mpgx.Config{
MigrationsTable: mpgx.DefaultMigrationsTable,
DatabaseName: config.ServiceName,
})
if err != nil {
return err
}
source, err := iofs.New(s.fs, pathMigration)
if err != nil {
return err
}
// TODO: pass own logger
m, err := migrate.NewWithInstance("fs", source, config.ServiceName, driver)
if err != nil {
return err
}
if err = m.Up(); err != nil && !errors.Is(err, migrate.ErrNoChange) {
return err
}
return nil
}
func (s *Postgres) MigrateDown() error {
driver, err := mpgx.WithInstance(s.db, &mpgx.Config{
MigrationsTable: mpgx.DefaultMigrationsTable,
DatabaseName: config.ServiceName,
})
if err != nil {
return err
}
source, err := iofs.New(s.fs, pathMigration)
if err != nil {
return err
}
// TODO: pass own logger
m, err := migrate.NewWithInstance("fs", source, config.ServiceName, driver)
if err != nil {
return err
}
if err = m.Down(); err != nil && !errors.Is(err, migrate.ErrNoChange) {
return err
}
return nil
}
func (s *Postgres) ListPackage(ctx context.Context) (models.ListPackage, error) {
rows, err := s.db.QueryContext(ctx, queryListPackage)
if err != nil {
return nil, err
}
defer func() {
if err = rows.Close(); err != nil {
return
}
err = rows.Err()
}()
result := make([]*models.Package, 0)
for rows.Next() {
tmp := &models.Package{}
if err = rows.Scan(
&tmp.ID,
&tmp.Name,
&tmp.URL,
pq.Array(&tmp.Comments),
); err != nil {
return nil, err
}
}
return result, err
}
func (s *Postgres) AddComment(ctx context.Context, rsp *pb.AddCommentRsp) error {
tx, err := s.db.BeginTx(ctx, nil)
if err != nil {
return err
}
defer func() {
if err != nil {
if rollbackErr := tx.Rollback(); rollbackErr != nil {
logger.Errorf(ctx, "AddComment: unable to rollback: %v", rollbackErr)
}
} else {
err = tx.Commit()
}
}()
res, err := tx.ExecContext(ctx, queryAddComment, rsp.Text, rsp.IdPackage.Value)
if err != nil {
return err
}
if aff, affErr := res.RowsAffected(); err != nil {
err = affErr
} else if aff == 0 {
err = errors.New("rows affected is 0")
}
return err
}
func (s *Postgres) AddPackage(ctx context.Context, rsp *pb.AddPackageRsp) error {
tx, err := s.db.BeginTx(ctx, nil)
if err != nil {
return err
}
defer func() {
if err != nil {
if rollbackErr := tx.Rollback(); rollbackErr != nil {
logger.Errorf(ctx, "AddPackage: unable to rollback: %v", rollbackErr)
}
} else {
err = tx.Commit()
}
}()
res, err := tx.ExecContext(ctx, queryAddPackage, rsp.Name.Value, rsp.Url.Value, pq.Array(rsp.Modules))
if err != nil {
return err
}
if aff, affErr := res.RowsAffected(); err != nil {
err = affErr
} else if aff == 0 {
err = errors.New("rows affected is 0")
}
return err
}