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forgejo/models/db/engine.go

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// Copyright 2014 The Gogs Authors. All rights reserved.
// Copyright 2018 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package db
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import (
"context"
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"database/sql"
"errors"
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"fmt"
"io"
"reflect"
"strings"
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"code.gitea.io/gitea/modules/setting"
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// Needed for the MySQL driver
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_ "github.com/go-sql-driver/mysql"
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"xorm.io/xorm"
"xorm.io/xorm/names"
"xorm.io/xorm/schemas"
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// Needed for the Postgresql driver
_ "github.com/lib/pq"
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// Needed for the MSSQL driver
_ "github.com/denisenkom/go-mssqldb"
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)
var (
x *xorm.Engine
tables []interface{}
initFuncs []func() error
// HasEngine specifies if we have a xorm.Engine
HasEngine bool
)
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// Engine represents a xorm engine or session.
type Engine interface {
Table(tableNameOrBean interface{}) *xorm.Session
Count(...interface{}) (int64, error)
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Decr(column string, arg ...interface{}) *xorm.Session
Delete(...interface{}) (int64, error)
Exec(...interface{}) (sql.Result, error)
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Find(interface{}, ...interface{}) error
Get(interface{}) (bool, error)
ID(interface{}) *xorm.Session
In(string, ...interface{}) *xorm.Session
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Incr(column string, arg ...interface{}) *xorm.Session
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Insert(...interface{}) (int64, error)
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InsertOne(interface{}) (int64, error)
Iterate(interface{}, xorm.IterFunc) error
Join(joinOperator string, tablename interface{}, condition string, args ...interface{}) *xorm.Session
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SQL(interface{}, ...interface{}) *xorm.Session
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Where(interface{}, ...interface{}) *xorm.Session
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Asc(colNames ...string) *xorm.Session
Desc(colNames ...string) *xorm.Session
API add/generalize pagination (#9452) * paginate results * fixed deadlock * prevented breaking change * updated swagger * go fmt * fixed find topic * go mod tidy * go mod vendor with go1.13.5 * fixed repo find topics * fixed unit test * added Limit method to Engine struct; use engine variable when provided; fixed gitignore * use ItemsPerPage for default pagesize; fix GetWatchers, getOrgUsersByOrgID and GetStargazers; fix GetAllCommits headers; reverted some changed behaviors * set Page value on Home route * improved memory allocations * fixed response headers * removed logfiles * fixed import order * import order * improved swagger * added function to get models.ListOptions from context * removed pagesize diff on unit test * fixed imports * removed unnecessary struct field * fixed go fmt * scoped PR * code improvements * code improvements * go mod tidy * fixed import order * fixed commit statuses session * fixed files headers * fixed headers; added pagination for notifications * go mod tidy * go fmt * removed Private from user search options; added setting.UI.IssuePagingNum as default valeu on repo's issues list * Apply suggestions from code review Co-Authored-By: 6543 <6543@obermui.de> Co-Authored-By: zeripath <art27@cantab.net> * fixed build error * CI.restart() * fixed merge conflicts resolve * fixed conflicts resolve * improved FindTrackedTimesOptions.ToOptions() method * added backwards compatibility on ListReleases request; fixed issue tracked time ToSession * fixed build error; fixed swagger template * fixed swagger template * fixed ListReleases backwards compatibility * added page to user search route Co-authored-by: techknowlogick <matti@mdranta.net> Co-authored-by: 6543 <6543@obermui.de> Co-authored-by: zeripath <art27@cantab.net>
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Limit(limit int, start ...int) *xorm.Session
SumInt(bean interface{}, columnName string) (res int64, err error)
Sync2(...interface{}) error
Select(string) *xorm.Session
NotIn(string, ...interface{}) *xorm.Session
OrderBy(string) *xorm.Session
Exist(...interface{}) (bool, error)
Distinct(...string) *xorm.Session
Query(...interface{}) ([]map[string][]byte, error)
Cols(...string) *xorm.Session
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}
// TableInfo returns table's information via an object
func TableInfo(v interface{}) (*schemas.Table, error) {
return x.TableInfo(v)
}
// DumpTables dump tables information
func DumpTables(tables []*schemas.Table, w io.Writer, tp ...schemas.DBType) error {
return x.DumpTables(tables, w, tp...)
}
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// RegisterModel registers model, if initfunc provided, it will be invoked after data model sync
func RegisterModel(bean interface{}, initFunc ...func() error) {
tables = append(tables, bean)
if len(initFuncs) > 0 && initFunc[0] != nil {
initFuncs = append(initFuncs, initFunc[0])
}
}
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func init() {
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gonicNames := []string{"SSL", "UID"}
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for _, name := range gonicNames {
names.LintGonicMapper[name] = true
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}
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}
// NewEngine returns a new xorm engine from the configuration
func NewEngine() (*xorm.Engine, error) {
connStr, err := setting.DBConnStr()
if err != nil {
return nil, err
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}
var engine *xorm.Engine
if setting.Database.UsePostgreSQL && len(setting.Database.Schema) > 0 {
// OK whilst we sort out our schema issues - create a schema aware postgres
registerPostgresSchemaDriver()
engine, err = xorm.NewEngine("postgresschema", connStr)
} else {
engine, err = xorm.NewEngine(setting.Database.Type, connStr)
}
if err != nil {
return nil, err
}
if setting.Database.Type == "mysql" {
engine.Dialect().SetParams(map[string]string{"rowFormat": "DYNAMIC"})
} else if setting.Database.Type == "mssql" {
engine.Dialect().SetParams(map[string]string{"DEFAULT_VARCHAR": "nvarchar"})
}
engine.SetSchema(setting.Database.Schema)
return engine, nil
}
func syncTables() error {
return x.StoreEngine("InnoDB").Sync2(tables...)
}
// InitInstallEngineWithMigration creates a new xorm.Engine for testing during install
//
// This function will cause the basic database schema to be created
func InitInstallEngineWithMigration(ctx context.Context, migrateFunc func(*xorm.Engine) error) (err error) {
x, err = NewEngine()
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if err != nil {
return fmt.Errorf("failed to connect to database: %w", err)
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}
x.SetMapper(names.GonicMapper{})
x.SetLogger(NewXORMLogger(!setting.IsProd))
x.ShowSQL(!setting.IsProd)
x.SetDefaultContext(ctx)
if err = x.Ping(); err != nil {
return err
}
// We have to run migrateFunc here in case the user is re-running installation on a previously created DB.
// If we do not then table schemas will be changed and there will be conflicts when the migrations run properly.
//
// Installation should only be being re-run if users want to recover an old database.
// However, we should think carefully about should we support re-install on an installed instance,
// as there may be other problems due to secret reinitialization.
if err = migrateFunc(x); err != nil {
return fmt.Errorf("migrate: %v", err)
}
return syncTables()
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}
// InitEngine sets the xorm.Engine
func InitEngine() (err error) {
x, err = NewEngine()
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if err != nil {
return fmt.Errorf("Failed to connect to database: %v", err)
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}
x.SetMapper(names.GonicMapper{})
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// WARNING: for serv command, MUST remove the output to os.stdout,
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// so use log file to instead print to stdout.
x.SetLogger(NewXORMLogger(setting.Database.LogSQL))
x.ShowSQL(setting.Database.LogSQL)
x.SetMaxOpenConns(setting.Database.MaxOpenConns)
x.SetMaxIdleConns(setting.Database.MaxIdleConns)
x.SetConnMaxLifetime(setting.Database.ConnMaxLifetime)
return nil
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}
// InitEngineWithMigration initializes a new xorm.Engine
// This function must never call .Sync2() if the provided migration function fails.
// When called from the "doctor" command, the migration function is a version check
// that prevents the doctor from fixing anything in the database if the migration level
// is different from the expected value.
func InitEngineWithMigration(ctx context.Context, migrateFunc func(*xorm.Engine) error) (err error) {
if err = InitEngine(); err != nil {
return err
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}
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DefaultContext = &Context{
Context: ctx,
e: x,
}
x.SetDefaultContext(ctx)
if err = x.Ping(); err != nil {
return err
}
if err = migrateFunc(x); err != nil {
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return fmt.Errorf("migrate: %v", err)
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}
if err = syncTables(); err != nil {
return fmt.Errorf("sync database struct error: %v", err)
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}
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for _, initFunc := range initFuncs {
if err := initFunc(); err != nil {
return fmt.Errorf("initFunc failed: %v", err)
}
}
return nil
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}
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// NamesToBean return a list of beans or an error
func NamesToBean(names ...string) ([]interface{}, error) {
beans := []interface{}{}
if len(names) == 0 {
beans = append(beans, tables...)
return beans, nil
}
// Need to map provided names to beans...
beanMap := make(map[string]interface{})
for _, bean := range tables {
beanMap[strings.ToLower(reflect.Indirect(reflect.ValueOf(bean)).Type().Name())] = bean
beanMap[strings.ToLower(x.TableName(bean))] = bean
beanMap[strings.ToLower(x.TableName(bean, true))] = bean
}
gotBean := make(map[interface{}]bool)
for _, name := range names {
bean, ok := beanMap[strings.ToLower(strings.TrimSpace(name))]
if !ok {
return nil, fmt.Errorf("No table found that matches: %s", name)
}
if !gotBean[bean] {
beans = append(beans, bean)
gotBean[bean] = true
}
}
return beans, nil
}
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// Ping tests if database is alive
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func Ping() error {
if x != nil {
return x.Ping()
}
return errors.New("database not configured")
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}
// DumpDatabase dumps all data from database according the special database SQL syntax to file system.
func DumpDatabase(filePath, dbType string) error {
var tbs []*schemas.Table
for _, t := range tables {
t, err := x.TableInfo(t)
if err != nil {
return err
}
tbs = append(tbs, t)
}
type Version struct {
ID int64 `xorm:"pk autoincr"`
Version int64
}
t, err := x.TableInfo(&Version{})
if err != nil {
return err
}
tbs = append(tbs, t)
if len(dbType) > 0 {
return x.DumpTablesToFile(tbs, filePath, schemas.DBType(dbType))
}
return x.DumpTablesToFile(tbs, filePath)
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}
// MaxBatchInsertSize returns the table's max batch insert size
func MaxBatchInsertSize(bean interface{}) int {
t, err := x.TableInfo(bean)
if err != nil {
return 50
}
return 999 / len(t.ColumnsSeq())
}
// Count returns records number according struct's fields as database query conditions
func Count(bean interface{}) (int64, error) {
return x.Count(bean)
}
// IsTableNotEmpty returns true if table has at least one record
func IsTableNotEmpty(tableName string) (bool, error) {
return x.Table(tableName).Exist()
}
// DeleteAllRecords will delete all the records of this table
func DeleteAllRecords(tableName string) error {
_, err := x.Exec(fmt.Sprintf("DELETE FROM %s", tableName))
return err
}
// GetMaxID will return max id of the table
func GetMaxID(beanOrTableName interface{}) (maxID int64, err error) {
_, err = x.Select("MAX(id)").Table(beanOrTableName).Get(&maxID)
return
}
// FindByMaxID filled results as the condition from database
func FindByMaxID(maxID int64, limit int, results interface{}) error {
return x.Where("id <= ?", maxID).
OrderBy("id DESC").
Limit(limit).
Find(results)
}