SimpleCloudNotifier/scnserver/db/impl/logs/database.go

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package logs
import (
server "blackforestbytes.com/simplecloudnotifier"
"blackforestbytes.com/simplecloudnotifier/db/dbtools"
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"blackforestbytes.com/simplecloudnotifier/db/schema"
"blackforestbytes.com/simplecloudnotifier/db/simplectx"
"context"
"database/sql"
"errors"
"fmt"
"github.com/jmoiron/sqlx"
_ "github.com/mattn/go-sqlite3"
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"github.com/rs/zerolog/log"
"gogs.mikescher.com/BlackForestBytes/goext/langext"
"gogs.mikescher.com/BlackForestBytes/goext/sq"
"time"
)
type Database struct {
db sq.DB
pp *dbtools.DBPreprocessor
wal bool
}
func NewLogsDatabase(cfg server.Config) (*Database, error) {
conf := cfg.DBLogs
url := fmt.Sprintf("file:%s?_journal=%s&_timeout=%d&_fk=%s&_busy_timeout=%d", conf.File, conf.Journal, conf.Timeout.Milliseconds(), langext.FormatBool(conf.CheckForeignKeys, "true", "false"), conf.BusyTimeout.Milliseconds())
xdb, err := sqlx.Open("sqlite3", url)
if err != nil {
return nil, err
}
if conf.SingleConn {
xdb.SetMaxOpenConns(1)
} else {
xdb.SetMaxOpenConns(5)
xdb.SetMaxIdleConns(5)
xdb.SetConnMaxLifetime(60 * time.Minute)
xdb.SetConnMaxIdleTime(60 * time.Minute)
}
qqdb := sq.NewDB(xdb)
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if conf.EnableLogger {
qqdb.AddListener(dbtools.DBLogger{})
}
pp, err := dbtools.NewDBPreprocessor(qqdb)
if err != nil {
return nil, err
}
qqdb.AddListener(pp)
scndb := &Database{db: qqdb, pp: pp, wal: conf.Journal == "WAL"}
return scndb, nil
}
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func (db *Database) DB() sq.DB {
return db.db
}
func (db *Database) Migrate(outerctx context.Context) error {
innerctx, cancel := context.WithTimeout(outerctx, 24*time.Second)
tctx := simplectx.CreateSimpleContext(innerctx, cancel)
tx, err := tctx.GetOrCreateTransaction(db)
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if err != nil {
return err
}
defer func() {
if tx.Status() == sq.TxStatusInitial || tx.Status() == sq.TxStatusActive {
err = tx.Rollback()
if err != nil {
log.Err(err).Msg("failed to rollback transaction")
}
}
}()
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ppReInit := false
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currschema, err := db.ReadSchema(tctx)
if err != nil {
return err
}
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if currschema == 0 {
schemastr := schema.LogsSchema[schema.LogsSchemaVersion].SQL
schemahash := schema.LogsSchema[schema.LogsSchemaVersion].Hash
_, err = tx.Exec(tctx, schemastr, sq.PP{})
if err != nil {
return err
}
err = db.WriteMetaInt(tctx, "schema", int64(schema.LogsSchemaVersion))
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if err != nil {
return err
}
err = db.WriteMetaString(tctx, "schema_hash", schemahash)
if err != nil {
return err
}
ppReInit = true
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currschema = schema.LogsSchemaVersion
}
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if currschema == 1 {
schemHashDB, err := sq.HashSqliteDatabase(tctx, tx)
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if err != nil {
return err
}
schemaHashMeta, err := db.ReadMetaString(tctx, "schema_hash")
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if err != nil {
return err
}
if schemHashDB != langext.Coalesce(schemaHashMeta, "") || langext.Coalesce(schemaHashMeta, "") != schema.LogsSchema[currschema].Hash {
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log.Debug().Str("schemHashDB", schemHashDB).Msg("Schema (logs db)")
log.Debug().Str("schemaHashMeta", langext.Coalesce(schemaHashMeta, "")).Msg("Schema (logs db)")
log.Debug().Str("schemaHashAsset", schema.LogsSchema[currschema].Hash).Msg("Schema (logs db)")
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return errors.New("database schema does not match (logs db)")
} else {
log.Debug().Str("schemHash", schemHashDB).Msg("Verified Schema consistency (logs db)")
}
}
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if currschema != schema.LogsSchemaVersion {
return errors.New(fmt.Sprintf("Unknown DB schema: %d", currschema))
}
err = tx.Commit()
if err != nil {
return err
}
if ppReInit {
log.Debug().Msg("Re-Init preprocessor")
err = db.pp.Init(outerctx) // Re-Init
if err != nil {
return err
}
}
return nil
}
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) Stop(ctx context.Context) error {
if db.wal {
_, err := db.db.Exec(ctx, "PRAGMA wal_checkpoint;", sq.PP{})
if err != nil {
return err
}
}
err := db.db.Exit()
if err != nil {
return err
}
return nil
}