#19 reset HEAD

internal/storage/postgres_tmp/storage.go

@@ -0,0 +1,235 @@
+//go:build ignore
+
+package postgres
+
+import (
+	"context"
+	"database/sql"
+	"embed"
+	"errors"
+	"fmt"
+	"strings"
+
+	"github.com/golang-migrate/migrate/v3"
+	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/pkgdash/internal/config"
+	"go.unistack.org/pkgdash/internal/models"
+	pb "go.unistack.org/pkgdash/proto"
+)
+
+const (
+	pathMigration = `migrations/postgres`
+)
+
+type Postgres struct {
+	db *sql.DB
+	fs embed.FS
+}
+
+func NewStorage() func(*sql.DB, embed.FS) interface{} {
+	return func(db *sql.DB, fs embed.FS) interface{} {
+		return &Postgres{db: db, fs: fs}
+	}
+}
+
+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) PackagesUpdate(ctx context.Context, req *pb.PackagesUpdateReq) error {
+	panic("need implement")
+}
+
+func (s *Postgres) PackagesList(ctx context.Context, req *pb.PackagesListReq) (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) CommentsCreate(ctx context.Context, req *pb.CommentsCreateReq) 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.Error(ctx, "AddComment: unable to rollback: %v", rollbackErr)
+			}
+		} else {
+			err = tx.Commit()
+		}
+	}()
+
+	res, err := tx.ExecContext(ctx, queryAddComment, req.Text, req.PackageId)
+	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) PackagesCreate(ctx context.Context, req *pb.PackagesCreateReq) 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.Error(ctx, "AddPackage: unable to rollback: %v", rollbackErr)
+			}
+		} else {
+			err = tx.Commit()
+		}
+	}()
+
+	res, err := tx.ExecContext(ctx, queryAddPackage, req.Name, req.Url, pq.Array(req.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
+}
+
+func (s *Postgres) InsertButchModules(ctx context.Context, req []models.Module) ([]uint64, error) {
+	tx, err := s.db.BeginTx(ctx, nil)
+	if err != nil {
+		return nil, err
+	}
+	defer func() {
+		if err != nil {
+			if rollbackErr := tx.Rollback(); rollbackErr != nil {
+				logger.Error(ctx, "AddPackage: unable to rollback: %v", rollbackErr)
+			}
+		} else {
+			err = tx.Commit()
+		}
+	}()
+
+	query := generateQuery(req)
+
+	rows, err := tx.QueryContext(ctx, query)
+	if err != nil {
+		return nil, err
+	}
+	defer func() {
+		if err = rows.Close(); err != nil {
+			return
+		}
+		err = rows.Err()
+	}()
+
+	result := make([]uint64, 0)
+	for rows.Next() {
+		tmp := uint64(0)
+		if err = rows.Scan(&tmp); err != nil {
+			return nil, err
+		}
+
+		result = append(result, tmp)
+	}
+
+	return result, err
+}
+
+func generateQuery(rsp []models.Module) string {
+	const pattern = `%c('%s', '%s', '%s')`
+	build := strings.Builder{}
+	comma := ' '
+	for i := range rsp {
+		str := fmt.Sprintf(pattern, comma, rsp[i].Name, rsp[i].Version, rsp[i].LastVersion)
+		build.WriteString(str)
+		comma = ','
+	}
+
+	return fmt.Sprintf(queryInsMsgGetIDs, build.String())
+}