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sqlstore.go
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sqlstore.go
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package sqlstore
import (
"fmt"
"os"
"path"
"path/filepath"
"sync"
"github.com/raintank/worldping-api/pkg/log"
"github.com/raintank/worldping-api/pkg/services/sqlstore/migrations"
"github.com/raintank/worldping-api/pkg/services/sqlstore/migrator"
"github.com/raintank/worldping-api/pkg/services/sqlstore/sqlutil"
"github.com/raintank/worldping-api/pkg/setting"
_ "github.com/go-sql-driver/mysql"
"github.com/go-xorm/xorm"
_ "github.com/mattn/go-sqlite3"
)
var (
x *xorm.Engine
dialect migrator.Dialect
l sync.Mutex
DbCfg struct {
Type, Host, Name, User, Pwd, Path, SslMode string
}
UseSQLite3 bool
)
// setup and manage an SQLite3 engine for testing.
func MockEngine() error {
l.Lock()
defer l.Unlock()
if x != nil {
log.Info("cleaning existing DB")
sqlutil.CleanDB(x)
migrator := migrator.NewMigrator(x)
migrator.LogLevel = log.INFO
migrations.AddMigrations(migrator)
return migrator.Start()
}
e, err := xorm.NewEngine(sqlutil.TestDB_Sqlite3.DriverName, sqlutil.TestDB_Sqlite3.ConnStr)
//x, err := xorm.NewEngine(sqlutil.TestDB_Mysql.DriverName, sqlutil.TestDB_Mysql.ConnStr)
//x, err := xorm.NewEngine(sqlutil.TestDB_Postgres.DriverName, sqlutil.TestDB_Postgres.ConnStr)
e.SetMaxOpenConns(1)
if err != nil {
return err
}
sqlutil.CleanDB(e)
return SetEngine(e, false)
}
func NewEngine() {
x, err := getEngine()
if err != nil {
log.Fatal(3, "Sqlstore: Fail to connect to database: %v", err)
}
err = SetEngine(x, setting.Env == setting.DEV)
if err != nil {
log.Fatal(3, "fail to initialize orm engine: %v", err)
}
x.SetMaxOpenConns(20)
}
func SetEngine(engine *xorm.Engine, enableLog bool) (err error) {
x = engine
dialect = migrator.NewDialect(x.DriverName())
migrator := migrator.NewMigrator(x)
migrator.LogLevel = log.INFO
migrations.AddMigrations(migrator)
if err := migrator.Start(); err != nil {
return fmt.Errorf("Sqlstore::Migration failed err: %v\n", err)
}
if enableLog {
logPath := path.Join(setting.LogsPath, "xorm.log")
os.MkdirAll(path.Dir(logPath), os.ModePerm)
f, err := os.Create(logPath)
if err != nil {
return fmt.Errorf("sqlstore.init(fail to create xorm.log): %v", err)
}
x.SetLogger(xorm.NewSimpleLogger(f))
if setting.Env == setting.DEV {
x.ShowSQL(true)
}
}
return nil
}
func getEngine() (*xorm.Engine, error) {
LoadConfig()
cnnstr := ""
switch DbCfg.Type {
case "mysql":
cnnstr = fmt.Sprintf("%s:%s@tcp(%s)/%s?charset=utf8",
DbCfg.User, DbCfg.Pwd, DbCfg.Host, DbCfg.Name)
case "sqlite3":
if !filepath.IsAbs(DbCfg.Path) {
DbCfg.Path = filepath.Join(setting.DataPath, DbCfg.Path)
}
os.MkdirAll(path.Dir(DbCfg.Path), os.ModePerm)
cnnstr = "file:" + DbCfg.Path + "?cache=shared&mode=rwc&_loc=Local"
default:
return nil, fmt.Errorf("Unknown database type: %s", DbCfg.Type)
}
log.Info("Database: %v", DbCfg.Type)
return xorm.NewEngine(DbCfg.Type, cnnstr)
}
func LoadConfig() {
sec := setting.Cfg.Section("database")
DbCfg.Type = sec.Key("type").String()
if DbCfg.Type == "sqlite3" {
UseSQLite3 = true
}
DbCfg.Host = sec.Key("host").String()
DbCfg.Name = sec.Key("name").String()
DbCfg.User = sec.Key("user").String()
if len(DbCfg.Pwd) == 0 {
DbCfg.Pwd = sec.Key("password").String()
}
DbCfg.SslMode = sec.Key("ssl_mode").String()
DbCfg.Path = sec.Key("path").MustString("data/grafana.db")
}
func TestDB() error {
sess, err := newSession(true, "endpoint")
if err != nil {
return err
}
defer sess.Cleanup()
if err = testDB(sess); err != nil {
return err
}
sess.Complete()
return nil
}
func testDB(sess *session) error {
_, err := sess.Query("SELECT 1")
return err
}