move server/* to scnserver/*

scnserver/db/database.go

@@ -0,0 +1,117 @@
+package db
+
+import (
+	server "blackforestbytes.com/simplecloudnotifier"
+	"blackforestbytes.com/simplecloudnotifier/db/schema"
+	"context"
+	"database/sql"
+	"errors"
+	"fmt"
+	"github.com/jmoiron/sqlx"
+	_ "github.com/mattn/go-sqlite3"
+	"github.com/rs/zerolog/log"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/sq"
+	"time"
+)
+
+type Database struct {
+	db sq.DB
+}
+
+func NewDatabase(conf server.Config) (*Database, error) {
+	url := fmt.Sprintf("file:%s?_journal=%s&_timeout=%d&_fk=%s", conf.DBFile, conf.DBJournal, conf.DBTimeout.Milliseconds(), langext.FormatBool(conf.DBCheckForeignKeys, "true", "false"))
+
+	xdb, err := sqlx.Open("sqlite3", url)
+	if err != nil {
+		return nil, err
+	}
+
+	if conf.DBSingleConn {
+		xdb.SetMaxOpenConns(1)
+	} else {
+		xdb.SetMaxOpenConns(5)
+		xdb.SetMaxIdleConns(5)
+		xdb.SetConnMaxLifetime(60 * time.Minute)
+		xdb.SetConnMaxIdleTime(60 * time.Minute)
+	}
+
+	qqdb := sq.NewDB(xdb)
+
+	scndb := &Database{qqdb}
+
+	qqdb.SetListener(scndb)
+
+	return scndb, nil
+}
+
+func (db *Database) Migrate(ctx context.Context) error {
+	ctx, cancel := context.WithTimeout(context.Background(), 24*time.Second)
+	defer cancel()
+
+	currschema, err := db.ReadSchema(ctx)
+	if currschema == 0 {
+
+		_, err = db.db.Exec(ctx, schema.Schema3, sq.PP{})
+		if err != nil {
+			return err
+		}
+
+		err = db.WriteMetaInt(ctx, "schema", 3)
+		if err != nil {
+			return err
+		}
+
+		return nil
+
+	} else if currschema == 1 {
+		return errors.New("cannot autom. upgrade schema 1")
+	} else if currschema == 2 {
+		return errors.New("cannot autom. upgrade schema 2") //TODO
+	} else if currschema == 3 {
+		return nil // current
+	} else {
+		return errors.New(fmt.Sprintf("Unknown DB schema: %d", currschema))
+	}
+
+}
+
+func (db *Database) Ping(ctx context.Context) error {
+	return db.db.Ping(ctx)
+}
+
+func (db *Database) BeginTx(ctx context.Context) (sq.Tx, error) {
+	return db.db.BeginTransaction(ctx, sql.LevelDefault)
+}
+
+func (db *Database) OnQuery(txID *uint16, sql string, _ *sq.PP) {
+	if txID == nil {
+		log.Debug().Msg(fmt.Sprintf("[SQL-QUERY] %s", fmtSQLPrint(sql)))
+	} else {
+		log.Debug().Msg(fmt.Sprintf("[SQL-TX<%d>-QUERY] %s", *txID, fmtSQLPrint(sql)))
+	}
+}
+
+func (db *Database) OnExec(txID *uint16, sql string, _ *sq.PP) {
+	if txID == nil {
+		log.Debug().Msg(fmt.Sprintf("[SQL-EXEC] %s", fmtSQLPrint(sql)))
+	} else {
+		log.Debug().Msg(fmt.Sprintf("[SQL-TX<%d>-EXEC] %s", *txID, fmtSQLPrint(sql)))
+	}
+}
+
+func (db *Database) OnPing() {
+	log.Debug().Msg("[SQL-PING]")
+}
+
+func (db *Database) OnTxBegin(txid uint16) {
+	log.Debug().Msg(fmt.Sprintf("[SQL-TX<%d>-START]", txid))
+}
+
+func (db *Database) OnTxCommit(txid uint16) {
+	log.Debug().Msg(fmt.Sprintf("[SQL-TX<%d>-COMMIT]", txid))
+}
+
+func (db *Database) OnTxRollback(txid uint16) {
+	log.Debug().Msg(fmt.Sprintf("[SQL-TX<%d>-ROLLBACK]", txid))
+}