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

316 lines
8.3 KiB
Go

package requests
import (
server "blackforestbytes.com/simplecloudnotifier"
"blackforestbytes.com/simplecloudnotifier/db/dbtools"
"blackforestbytes.com/simplecloudnotifier/db/schema"
"blackforestbytes.com/simplecloudnotifier/db/simplectx"
"blackforestbytes.com/simplecloudnotifier/models"
"context"
"database/sql"
"errors"
"fmt"
"github.com/glebarez/go-sqlite"
"github.com/jmoiron/sqlx"
"github.com/rs/zerolog/log"
"gogs.mikescher.com/BlackForestBytes/goext/exerr"
"gogs.mikescher.com/BlackForestBytes/goext/langext"
"gogs.mikescher.com/BlackForestBytes/goext/sq"
"os"
"path/filepath"
"time"
)
type Database struct {
db sq.DB
pp *dbtools.DBPreprocessor
wal bool
name string
schemaVersion int
schema map[int]schema.Def
}
func NewRequestsDatabase(cfg server.Config) (*Database, error) {
conf := cfg.DBRequests
url := fmt.Sprintf("file:%s?_pragma=journal_mode(%s)&_pragma=timeout(%d)&_pragma=foreign_keys(%s)&_pragma=busy_timeout(%d)",
conf.File,
conf.Journal,
conf.Timeout.Milliseconds(),
langext.FormatBool(conf.CheckForeignKeys, "true", "false"),
conf.BusyTimeout.Milliseconds())
if !langext.InArray("sqlite3", sql.Drivers()) {
sqlite.RegisterAsSQLITE3()
}
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, sq.DBOptions{RegisterDefaultConverter: langext.PTrue, RegisterCommentTrimmer: langext.PTrue})
models.RegisterConverter(qqdb)
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",
schemaVersion: schema.RequestsSchemaVersion,
schema: schema.RequestsSchema,
name: "requests",
}
return scndb, nil
}
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)
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")
}
}
}()
ppReInit := false
currschema, err := db.ReadSchema(tctx)
if err != nil {
return err
}
if currschema == db.schemaVersion {
log.Info().Msgf("Database [%s] is up-to-date (%d == %d)", db.name, currschema, db.schemaVersion)
}
for currschema < db.schemaVersion {
if currschema == 0 {
log.Info().Msgf("Migrate database (initialize) [%s] %d -> %d", db.name, currschema, db.schemaVersion)
schemastr := db.schema[db.schemaVersion].SQL
schemahash := db.schema[db.schemaVersion].Hash
_, err = tx.Exec(tctx, schemastr, sq.PP{})
if err != nil {
return err
}
err = db.WriteMetaInt(tctx, "schema", int64(db.schemaVersion))
if err != nil {
return err
}
err = db.WriteMetaString(tctx, "schema_hash", schemahash)
if err != nil {
return err
}
ppReInit = true
currschema = db.schemaVersion
} else {
log.Info().Msgf("Migrate database [%s] %d -> %d", db.name, currschema, currschema+1)
err = db.migrateSingle(tctx, tx, currschema, currschema+1)
if err != nil {
return err
}
currschema = currschema + 1
ppReInit = true
}
}
if currschema != db.schemaVersion {
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
}
//goland:noinspection SqlConstantCondition,SqlWithoutWhere
func (db *Database) migrateSingle(tctx *simplectx.SimpleContext, tx sq.Tx, schemaFrom int, schemaTo int) error {
if schemaFrom == schemaTo-1 {
migSQL := db.schema[schemaTo].MigScript
if migSQL == "" {
return exerr.New(exerr.TypeInternal, fmt.Sprintf("missing %s migration from %d to %d", db.name, schemaFrom, schemaTo)).Build()
}
return db.migrateBySQL(tctx, tx, migSQL, schemaFrom, schemaTo, db.schema[schemaTo].Hash, nil)
}
return exerr.New(exerr.TypeInternal, fmt.Sprintf("missing %s migration from %d to %d", db.name, schemaFrom, schemaTo)).Build()
}
func (db *Database) migrateBySQL(tctx *simplectx.SimpleContext, tx sq.Tx, stmts string, currSchemaVers int, resultSchemVers int, resultHash string, post func(tctx *simplectx.SimpleContext, tx sq.Tx) error) error {
schemaHashMeta, err := db.ReadMetaString(tctx, "schema_hash")
if err != nil {
return err
}
schemHashDBBefore, err := sq.HashSqliteDatabase(tctx, tx)
if err != nil {
return err
}
if schemHashDBBefore != langext.Coalesce(schemaHashMeta, "") || langext.Coalesce(schemaHashMeta, "") != db.schema[currSchemaVers].Hash {
log.Debug().Str("schemHashDB", schemHashDBBefore).Msg("Schema (primary db)")
log.Debug().Str("schemaHashMeta", langext.Coalesce(schemaHashMeta, "")).Msg("Schema (primary db)")
log.Debug().Str("schemaHashAsset", db.schema[currSchemaVers].Hash).Msg("Schema (primary db)")
return errors.New("database schema does not match (primary db)")
} else {
log.Debug().Str("schemHash", schemHashDBBefore).Msg("Verified Schema consistency (primary db)")
}
log.Info().Msgf("Upgrade schema from %d -> %d", currSchemaVers, resultSchemVers)
_, err = tx.Exec(tctx, stmts, sq.PP{})
if err != nil {
return err
}
schemHashDBAfter, err := sq.HashSqliteDatabase(tctx, tx)
if err != nil {
return err
}
if schemHashDBAfter != resultHash {
schemaDBStr := langext.Must(createSqliteDatabaseSchemaStringFromSQL(tctx, db.schema[resultSchemVers].SQL))
resultDBStr := langext.Must(sq.CreateSqliteDatabaseSchemaString(tctx, tx))
fmt.Printf("========================================= SQL SCHEMA-DUMP STR (CORRECT | FROM COMPILED SCHEMA):%s\n=========================================\n\n", schemaDBStr)
fmt.Printf("========================================= SQL SCHEMA-DUMP STR (CURRNET | AFTER MIGRATION):%s\n=========================================\n\n", resultDBStr)
return fmt.Errorf("database [%s] schema does not match after [%d -> %d] migration (expected: %s | actual: %s)", db.name, currSchemaVers, resultSchemVers, resultHash, schemHashDBBefore)
}
err = db.WriteMetaInt(tctx, "schema", int64(resultSchemVers))
if err != nil {
return err
}
err = db.WriteMetaString(tctx, "schema_hash", resultHash)
if err != nil {
return err
}
log.Info().Msgf("Upgrade schema from %d -> %d succesfully", currSchemaVers, resultSchemVers)
return nil
}
func createSqliteDatabaseSchemaStringFromSQL(ctx context.Context, schemaStr string) (string, error) {
dbdir := os.TempDir()
dbfile1 := filepath.Join(dbdir, langext.MustHexUUID()+".sqlite3")
defer func() { _ = os.Remove(dbfile1) }()
err := os.MkdirAll(dbdir, os.ModePerm)
if err != nil {
return "", err
}
url := fmt.Sprintf("file:%s?_pragma=journal_mode(%s)&_pragma=timeout(%d)&_pragma=foreign_keys(%s)&_pragma=busy_timeout(%d)", dbfile1, "DELETE", 1000, "true", 1000)
xdb, err := sqlx.Open("sqlite", url)
if err != nil {
return "", err
}
db := sq.NewDB(xdb, sq.DBOptions{})
_, err = db.Exec(ctx, schemaStr, sq.PP{})
if err != nil {
return "", err
}
return sq.CreateSqliteDatabaseSchemaString(ctx, db)
}
func (db *Database) Ping(ctx context.Context) error {
return db.db.Ping(ctx)
}
func (db *Database) Version(ctx context.Context) (string, string, error) {
type rt struct {
Version string `db:"version"`
SourceID string `db:"sourceID"`
}
resp, err := sq.QuerySingle[rt](ctx, db.db, "SELECT sqlite_version() AS version, sqlite_source_id() AS sourceID", sq.PP{}, sq.SModeFast, sq.Safe)
if err != nil {
return "", "", err
}
return resp.Version, resp.SourceID, nil
}
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
}