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Refactor SQL Explainer

This commit is contained in:
Jinzhu 2020-02-23 13:22:08 +08:00
parent bc5ceff82f
commit c3b798aec8
2 changed files with 46 additions and 19 deletions
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33
logger/sql.go
View File

@ -3,6 +3,7 @@ package logger
import (
"database/sql/driver"
"fmt"
"reflect"
"regexp"
"strconv"
"strings"
@ -19,19 +20,17 @@ func isPrintable(s []byte) bool {
return true
}
func ExplainSQL(sql string, numericPlaceholder *regexp.Regexp, escaper string, vars ...interface{}) string {
for idx, v := range vars {
if valuer, ok := v.(driver.Valuer); ok {
v, _ = valuer.Value()
}
var convertableTypes = []reflect.Type{reflect.TypeOf(time.Time{}), reflect.TypeOf(false), reflect.TypeOf([]byte{})}
func ExplainSQL(sql string, numericPlaceholder *regexp.Regexp, escaper string, vars ...interface{}) string {
var convertParams func(interface{}, int)
convertParams = func(v interface{}, idx int) {
switch v := v.(type) {
case bool:
vars[idx] = fmt.Sprint(v)
case time.Time:
vars[idx] = escaper + v.Format("2006-01-02 15:04:05") + escaper
case *time.Time:
vars[idx] = escaper + v.Format("2006-01-02 15:04:05") + escaper
case []byte:
if isPrintable(v) {
vars[idx] = escaper + strings.Replace(string(v), escaper, "\\"+escaper, -1) + escaper
@ -48,19 +47,35 @@ func ExplainSQL(sql string, numericPlaceholder *regexp.Regexp, escaper string, v
if v == nil {
vars[idx] = "NULL"
} else {
rv := reflect.Indirect(reflect.ValueOf(v))
for _, t := range convertableTypes {
if rv.Type().ConvertibleTo(t) {
convertParams(rv.Convert(t).Interface(), idx)
return
}
}
vars[idx] = escaper + strings.Replace(fmt.Sprint(v), escaper, "\\"+escaper, -1) + escaper
}
}
}
for idx, v := range vars {
if valuer, ok := v.(driver.Valuer); ok {
v, _ = valuer.Value()
}
convertParams(v, idx)
}
if numericPlaceholder == nil {
for _, v := range vars {
sql = strings.Replace(sql, "?", v.(string), 1)
}
} else {
sql = numericPlaceholder.ReplaceAllString(sql, "$$$$$1")
sql = numericPlaceholder.ReplaceAllString(sql, "$$$1$$")
for idx, v := range vars {
sql = strings.Replace(sql, "$$"+strconv.Itoa(idx), v.(string), 1)
sql = strings.Replace(sql, "$"+strconv.Itoa(idx)+"$", v.(string), 1)
}
}

32
logger/sql_test.go
View File

@ -9,7 +9,13 @@ import (
)
func TestExplainSQL(t *testing.T) {
tt := now.MustParse("2020-02-23 11:10:10")
type role string
type password []byte
var (
tt = now.MustParse("2020-02-23 11:10:10")
myrole = role("admin")
pwd = password([]byte("pass"))
)
results := []struct {
SQL string
@ -18,22 +24,28 @@ func TestExplainSQL(t *testing.T) {
Result string
}{
{
SQL: "create table users (name, age, height, actived, bytes, create_at, update_at, deleted_at) values (?, ?, ?, ?, ?, ?, ?, ?)",
SQL: "create table users (name, age, height, actived, bytes, create_at, update_at, deleted_at, email, role, pass) values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
NumericRegexp: nil,
Vars: []interface{}{"jinzhu", 1, 999.99, true, []byte("12345"), tt, &tt, nil},
Result: `create table users (name, age, height, actived, bytes, create_at, update_at, deleted_at) values ("jinzhu", 1, 999.990000, true, "12345", "2020-02-23 11:10:10", "2020-02-23 11:10:10", NULL)`,
Vars: []interface{}{"jinzhu", 1, 999.99, true, []byte("12345"), tt, &tt, nil, "w@g.com", myrole, pwd},
Result: `create table users (name, age, height, actived, bytes, create_at, update_at, deleted_at, email, role, pass) values ("jinzhu", 1, 999.990000, true, "12345", "2020-02-23 11:10:10", "2020-02-23 11:10:10", NULL, "w@g.com", "admin", "pass")`,
},
{
SQL: "create table users (name, age, height, actived, bytes, create_at, update_at, deleted_at) values (@p0, @p1, @p2, @p3, @p4, @p5, @p6, @p7)",
SQL: "create table users (name, age, height, actived, bytes, create_at, update_at, deleted_at, email, role, pass) values (@p0, @p1, @p2, @p3, @p4, @p5, @p6, @p7, @p8, @p9, @p10)",
NumericRegexp: regexp.MustCompile("@p(\\d+)"),
Vars: []interface{}{"jinzhu", 1, 999.99, true, []byte("12345"), tt, &tt, nil},
Result: `create table users (name, age, height, actived, bytes, create_at, update_at, deleted_at) values ("jinzhu", 1, 999.990000, true, "12345", "2020-02-23 11:10:10", "2020-02-23 11:10:10", NULL)`,
Vars: []interface{}{"jinzhu", 1, 999.99, true, []byte("12345"), tt, &tt, nil, "w@g.com", myrole, pwd},
Result: `create table users (name, age, height, actived, bytes, create_at, update_at, deleted_at, email, role, pass) values ("jinzhu", 1, 999.990000, true, "12345", "2020-02-23 11:10:10", "2020-02-23 11:10:10", NULL, "w@g.com", "admin", "pass")`,
},
{
SQL: "create table users (name, age, height, actived, bytes, create_at, update_at, deleted_at) values ($2, $3, $0, $1, $6, $7, $4, $5)",
SQL: "create table users (name, age, height, actived, bytes, create_at, update_at, deleted_at, email, role, pass) values ($2, $3, $0, $1, $6, $7, $4, $5, $8, $9, $10)",
NumericRegexp: regexp.MustCompile("\\$(\\d+)"),
Vars: []interface{}{999.99, true, "jinzhu", 1, &tt, nil, []byte("12345"), tt},
Result: `create table users (name, age, height, actived, bytes, create_at, update_at, deleted_at) values ("jinzhu", 1, 999.990000, true, "12345", "2020-02-23 11:10:10", "2020-02-23 11:10:10", NULL)`,
Vars: []interface{}{999.99, true, "jinzhu", 1, &tt, nil, []byte("12345"), tt, "w@g.com", myrole, pwd},
Result: `create table users (name, age, height, actived, bytes, create_at, update_at, deleted_at, email, role, pass) values ("jinzhu", 1, 999.990000, true, "12345", "2020-02-23 11:10:10", "2020-02-23 11:10:10", NULL, "w@g.com", "admin", "pass")`,
},
{
SQL: "create table users (name, age, height, actived, bytes, create_at, update_at, deleted_at, email, role, pass) values (@p0, @p10, @p1, @p2, @p3, @p4, @p5, @p6, @p7, @p8, @p9)",
NumericRegexp: regexp.MustCompile("@p(\\d+)"),
Vars: []interface{}{"jinzhu", 999.99, true, []byte("12345"), tt, &tt, nil, "w@g.com", myrole, pwd, 1},
Result: `create table users (name, age, height, actived, bytes, create_at, update_at, deleted_at, email, role, pass) values ("jinzhu", 1, 999.990000, true, "12345", "2020-02-23 11:10:10", "2020-02-23 11:10:10", NULL, "w@g.com", "admin", "pass")`,
},
}