add storage and mux handle with handlers

storage/postgres/quries.go

@@ -0,0 +1,7 @@
+package postgres
+
+const (
+	queryListPackage = `
+select * from package;
+`
+)

storage/postgres/storage.go

@@ -0,0 +1,83 @@
+package postgres
+
+import (
+	"database/sql"
+	"embed"
+	"errors"
+	"go.unistack.org/unistack-org/pkgdash/config"
+
+	"github.com/golang-migrate/migrate/v4"
+	"github.com/golang-migrate/migrate/v4/database/pgx"
+	"github.com/golang-migrate/migrate/v4/source/iofs"
+)
+
+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 := pgx.WithInstance(s.db, &pgx.Config{
+		MigrationsTable: pgx.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 := pgx.WithInstance(s.db, &pgx.Config{
+		MigrationsTable: pgx.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
+}