util

package

v0.0.0-...-43a2903 Latest Latest Go to latest Published: Mar 13, 2018 License: Apache-2.0 Imports: 10 Imported by: 0

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func ExecWithRollback(db *sql.DB, queries []QueryEntry) (res sql.Result, err error)

ExecWithRollback exeutes or rollbak

func InitLog(file string, level string)

InitLog initials log

func MustExec(db *sql.DB, query string, args ...interface{}) sql.Result

MustExec must execute sql or fatal

func OpenDB(dsn string, maxIdeleConns int) (*sql.DB, error)

OpenDB opens db

func PushPrometheus(job, addr string, interval time.Duration)

PushPrometheus pushes metrics to Prometheus Pushgateway.

func RandString(b []byte, r *rand.Rand)

func RunWithRetry(ctx context.Context, retryCnt int, interval time.Duration, f func() error) error

RunWithRetry tries to run func in specified count

type QueryEntry struct {
	Query              string
	Args               []interface{}
	ExpectAffectedRows int64
}

QueryEntry is a query