/
execResult.go
189 lines (170 loc) · 3.78 KB
/
execResult.go
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package db
import (
"database/sql"
"errors"
"github.com/sirupsen/logrus"
"github.com/gogo/protobuf/proto"
)
type ExecResult interface {
sql.Result
// 出错时回调参数方法
Error(func(error)) ExecResult
// 错误保存到日志
ErrorToLog(log *logrus.Entry, msg ...string) ExecResult
//是否出错
HasError(reportZeroChange ...bool) error
}
//获取一个操作结果对象
func NewExecResult(rs sql.Result) ExecResult {
return &rus{
err: nil,
Result: rs,
}
}
//查询错误结果
func ErrExecResult(err error, sql string, args []interface{}) ExecResult {
return &rus{
sql: sql,
args: args,
err: err,
}
}
type rus struct {
sql.Result
sql string
args []interface{}
err error //查询错误
}
func (r *rus) Error(f func(err error)) ExecResult {
if r.err != nil && f != nil {
f(r.err)
}
return r
}
func (r *rus) ErrorToLog(log *logrus.Entry, msg ...string) ExecResult {
if r.err != nil && log != nil {
lg := log.WithField("sql", r.sql).
WithField("req", r.args).
WithError(r.err)
if len(msg) > 0 {
var msgs = []interface{}{"SQL错误:"}
for _, v := range msg {
msgs = append(msgs, v)
}
lg.Error(msgs...)
} else {
lg.Error("SQL错误")
}
}
return r
}
func (r *rus) HasError(reportZeroChange ...bool) error {
if r.err != nil {
return r.err
} else if len(reportZeroChange) < 1 {
reportZeroChange = []bool{false}
}
changrow, _ := r.RowsAffected()
if changrow == 0 && reportZeroChange[0] {
return SQLEmptyChange
}
return nil
}
type rusMsg struct {
lastInsertId int64
rowsAffected int64
err error //查询错误
}
func (r *rusMsg) LastInsertId() (int64, error) {
return r.lastInsertId, nil
}
func (r *rusMsg) RowsAffected() (int64, error) {
return r.rowsAffected, nil
}
func (r *rusMsg) Error(f func(err error)) ExecResult {
if r.err != nil && f != nil {
f(r.err)
}
return r
}
func (r *rusMsg) ErrorToLog(log *logrus.Entry, msg ...string) ExecResult {
if r.err != nil && log != nil {
lg := log.WithError(r.err)
if len(msg) > 0 {
var msgs = []interface{}{"SQL错误:"}
for _, v := range msg {
msgs = append(msgs, v)
}
lg.Error(msgs...)
} else {
lg.Error("SQL错误")
}
}
return r
}
func (r *rusMsg) HasError(reportZeroChange ...bool) error {
if r.err != nil {
return r.err
} else if len(reportZeroChange) < 1 {
reportZeroChange = []bool{false}
}
changrow, _ := r.RowsAffected()
if changrow == 0 && reportZeroChange[0] {
return SQLEmptyChange
}
return nil
}
// LastInsertId returns the integer generated by the database
// in response to a command. Typically this will be from an
// "auto increment" column when inserting a new row. Not all
// databases support this feature, and the syntax of such
// statements varies.
func (r *rus) LastInsertId() (int64, error) {
if r.Result != nil {
return r.Result.LastInsertId()
}
return 0, r.err
}
// RowsAffected returns the number of rows affected by an
// update, insert, or delete. Not every database or database
// driver may support this.
func (r *rus) RowsAffected() (int64, error) {
if r.Result != nil {
return r.Result.RowsAffected()
}
return 0, r.err
}
func ExecResultToBytes(v ExecResult) []byte {
msg := &ExecResultMsg{}
l, err := v.LastInsertId()
if err != nil {
msg.ErrMsg = err.Error()
msg.ErrCode = -1
}
msg.LastInsertId = l
r, err := v.RowsAffected()
if err != nil {
msg.ErrMsg = err.Error()
msg.ErrCode = -1
}
msg.RowsAffected = r
e := v.HasError(true)
if e != nil {
msg.ErrCode = -1
msg.ErrMsg = e.Error()
}
ret, _ := proto.Marshal(msg)
return ret
}
func BytesToExecResult(v []byte) ExecResult {
msg := &ExecResultMsg{}
proto.Unmarshal(v, msg)
ret := &rusMsg{
lastInsertId: msg.LastInsertId,
rowsAffected: msg.RowsAffected,
}
if msg.ErrMsg != "" {
ret.err = errors.New(msg.ErrMsg)
}
return ret
}