add vendor packages避免用户网络太慢无法下载编译

vendor/github.com/zr-hebo/util-db/.gitignore

@@ -0,0 +1,16 @@
+# Binaries for programs and plugins
+*.exe
+*.dll
+*.so
+*.dylib
+
+# Test binary, build with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Project-local glide cache, RE: https://github.com/Masterminds/glide/issues/736
+.glide/
+.idea/
+*.log

vendor/github.com/zr-hebo/util-db/LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

vendor/github.com/zr-hebo/util-db/README.md

@@ -0,0 +1,2 @@
+# db_util
+golang implement database operation util

vendor/github.com/zr-hebo/util-db/conn_info.go

@@ -0,0 +1,93 @@
+package db
+
+import (
+	"database/sql"
+	"fmt"
+	"reflect"
+	"regexp"
+	"runtime/debug"
+	"strings"
+)
+
+// GetMySQLConnInfoIgnoreErr 获取MySQL连接的字符串显示，忽略错误信息
+func GetMySQLConnInfoIgnoreErr(conn *sql.DB) (connInfo string) {
+	connInfo, _ = GetMySQLConnInfo(conn)
+	return
+}
+
+// GetMySQLConnInfo 获取MySQL连接的字符串显示
+func GetMySQLConnInfo(conn *sql.DB) (connInfo string, err error) {
+	defer func() {
+		if panicRecover := recover(); panicRecover != nil {
+			err = fmt.Errorf(
+				"get mysql connection info failed for %v", panicRecover)
+			debug.PrintStack()
+		}
+	}()
+
+	cv := reflect.ValueOf(conn).Elem()
+	// fmt.Printf("%#v\n", cv)
+
+	dsnv := cv.FieldByName("dsn")
+	dsnStr := fmt.Sprint(dsnv)
+	dsnInfo, err := resolveDsn(dsnStr)
+	if err != nil {
+		return
+	}
+
+	fcsv := cv.FieldByName("dep")
+	// fmt.Printf("%#v\n", fcsv)
+
+	lports := make([]string, 0)
+	for _, key := range fcsv.MapKeys() {
+		// fcv := fcsv.Index(0).Elem()
+		depSet := fcsv.MapIndex(key).MapKeys()
+		if len(depSet) < 1 {
+			continue
+		}
+
+		fcv := depSet[0].Elem().Elem()
+		// fmt.Printf("%#v\n", fcv)
+		// fmt.Printf("%#v\n", fcv.Elem())
+
+		mc := fcv.FieldByName("ci").Elem().Elem()
+		// fmt.Printf("%#v", mc)
+
+		nc := mc.FieldByName("netConn").Elem().Elem()
+		// fmt.Printf("%#v", nc)
+
+		ic := nc.FieldByName("conn")
+		// fmt.Printf("%#v", conn)
+
+		fd := ic.FieldByName("fd").Elem()
+		// fmt.Printf("%#v", fd)
+
+		la := fd.FieldByName("laddr").Elem().Elem()
+		// fmt.Printf("%#v", la)
+
+		lport := la.FieldByName("Port")
+
+		lports = append(lports, fmt.Sprint(lport))
+		// fmt.Printf("%#v", lport)
+	}
+
+	connInfo = fmt.Sprintf(
+		"127.0.0.1:%s <==> %s:%s", strings.Join(lports, ", "),
+		dsnInfo["host"], dsnInfo["port"])
+	return
+}
+
+func resolveDsn(dsn string) (info map[string]string, err error) {
+	info = make(map[string]string)
+
+	pattern := regexp.MustCompile(`.*:.*@tcp\((?P<host>[\w.]+):(?P<port>\d+)\)/`)
+
+	match := pattern.FindStringSubmatch(dsn)
+	for idx, name := range pattern.SubexpNames() {
+		if idx > 0 && idx <= len(match) {
+			info[name] = match[idx]
+		}
+	}
+
+	return
+}

vendor/github.com/zr-hebo/util-db/conn_operation.go

@@ -0,0 +1,16 @@
+package db
+
+import (
+	"database/sql"
+)
+
+// CloseConnection 关闭数据库连接
+func CloseConnection(conn *sql.DB) (err error) {
+	err = conn.Close()
+	if err != nil {
+		return err
+	}
+
+	_, err = GetMySQLConnInfo(conn)
+	return
+}

vendor/github.com/zr-hebo/util-db/query_db.go

@@ -0,0 +1,359 @@
+package db
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"time"
+)
+
+const (
+	dbTypeMysql = "mysql"
+)
+
+// Host  主机
+type Host struct {
+	IP     string `json:"ip"`
+	Domain string `json:"domain"`
+	Port   int    `json:"port"`
+}
+
+// UnanimityHost  id标示的主机
+type UnanimityHost struct {
+	Host string `json:"host"`
+	Port int    `json:"port"`
+}
+
+func (uh *UnanimityHost) String() string {
+	return fmt.Sprintf("%s:%d", uh.Host, uh.Port)
+}
+
+// UnanimityHostWithDomains   带域名的id标示的主机
+type UnanimityHostWithDomains struct {
+	UnanimityHost
+	IP      string   `json:"ip"`
+	Domains []string `json:"domains"`
+}
+
+// MysqlDB Mysql主机实例
+type MysqlDB struct {
+	Host
+	UserName       string
+	Passwd         string
+	DatabaseType   string
+	DBName         string
+	ConnectTimeout int
+}
+
+// NewMysqlDB 创建MySQL数据库
+func NewMysqlDB() (md *MysqlDB) {
+	md = new(MysqlDB)
+	md.DatabaseType = dbTypeMysql
+	return
+}
+
+// NewMysqlDBWithAllParam 带参数创建MySQL数据库
+func NewMysqlDBWithAllParam(
+	ip string, port int, userName, passwd, dbName string) (
+	pmd *MysqlDB) {
+	pmd = NewMysqlDB()
+	pmd.IP = ip
+	pmd.Port = port
+	pmd.UserName = userName
+	pmd.Passwd = passwd
+	pmd.DBName = dbName
+
+	return
+}
+
+// GetConnection 获取数据库连接
+func (md *MysqlDB) getConnection() (*sql.DB, error) {
+	connStr := md.fillConnStr()
+
+	stmtDB, err := sql.Open(md.DatabaseType, connStr)
+	if err != nil {
+		if stmtDB != nil {
+			stmtDB.Close()
+		}
+		return nil, err
+	}
+
+	stmtDB.SetMaxOpenConns(0)
+
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*3)
+	defer cancel()
+	if err := stmtDB.PingContext(ctx); err != nil {
+		return nil, err
+	}
+
+	return stmtDB, nil
+}
+
+// GetConnection 获取数据库连接
+func (md *MysqlDB) getRealConnection(ctx context.Context) (*sql.Conn, error) {
+	connStr := md.fillConnStr()
+
+	stmtDB, err := sql.Open(md.DatabaseType, connStr)
+	if err != nil {
+		if stmtDB != nil {
+			stmtDB.Close()
+		}
+		return nil, err
+	}
+
+	conn, err := stmtDB.Conn(ctx)
+	if err != nil {
+		if conn != nil {
+			conn.Close()
+		}
+		return nil, err
+	}
+
+	return conn, nil
+}
+
+type Field struct {
+	Name string
+	Type string
+}
+
+// FieldType Common type include "STRING", "FLOAT", "INT", "BOOL"
+func (f *Field) FieldType() string {
+	return f.Type
+}
+
+type QueryRow struct {
+	Fields []Field
+	Record map[string]interface{}
+}
+
+type QueryRows struct {
+	Fields  []Field
+	Records []map[string]interface{}
+}
+
+func newQueryRow() *QueryRow {
+	queryRow := new(QueryRow)
+	queryRow.Fields = make([]Field, 0)
+	queryRow.Record = make(map[string]interface{})
+	return queryRow
+}
+
+func newQueryRows() *QueryRows {
+	queryRows := new(QueryRows)
+	queryRows.Fields = make([]Field, 0)
+	queryRows.Records = make([]map[string]interface{}, 0)
+	return queryRows
+}
+
+// QueryRows 执行MySQL Query语句，返回多条数据
+func (md *MysqlDB) QueryRows(stmt string) (queryRows *QueryRows, err error) {
+	defer func() {
+		if err != nil {
+			err = fmt.Errorf("query rows on %s:%d failed <-- %s", md.IP, md.Port, err.Error())
+		}
+	}()
+
+	connStr := md.fillConnStr()
+
+	db, err := sql.Open(md.DatabaseType, connStr)
+	if db != nil {
+		defer db.Close()
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	rawRows, err := db.Query(stmt)
+	if rawRows != nil {
+		defer rawRows.Close()
+	}
+	if err != nil {
+		return
+	}
+
+	colTypes, err := rawRows.ColumnTypes()
+	if err != nil {
+		return
+	}
+
+	fields := make([]Field, 0, len(colTypes))
+	for _, colType := range colTypes {
+		fields = append(fields, Field{Name: colType.Name(), Type: getDataType(colType.DatabaseTypeName())})
+	}
+
+	queryRows = newQueryRows()
+	queryRows.Fields = fields
+	for rawRows.Next() {
+		receiver := createReceiver(fields)
+		err = rawRows.Scan(receiver...)
+		if err != nil {
+			return
+		}
+
+		queryRows.Records = append(queryRows.Records, getRecordFromReceiver(receiver, fields))
+	}
+	return
+}
+
+func createReceiver(fields []Field) (receiver []interface{}) {
+	receiver = make([]interface{}, 0, len(fields))
+	for _, field := range fields {
+		switch field.Type {
+		case "string":
+			{
+				var val sql.NullString
+				receiver = append(receiver, &val)
+			}
+		case "int64":
+			{
+				var val sql.NullInt64
+				receiver = append(receiver, &val)
+			}
+		case "float64":
+			{
+				var val sql.NullFloat64
+				receiver = append(receiver, &val)
+			}
+		case "bool":
+			{
+				var val sql.NullBool
+				receiver = append(receiver, &val)
+			}
+		default:
+			var val sql.NullString
+			receiver = append(receiver, &val)
+		}
+	}
+
+	return
+}
+
+func getRecordFromReceiver(receiver []interface{}, fields []Field) (record map[string]interface{}) {
+	record = make(map[string]interface{})
+	for idx := 0; idx < len(fields); idx++ {
+		field := fields[idx]
+		value := receiver[idx]
+		switch field.Type {
+		case "string":
+			{
+				nullVal := value.(*sql.NullString)
+				record[field.Name] = nil
+				if nullVal.Valid {
+					record[field.Name] = nullVal.String
+				}
+			}
+		case "int64":
+			{
+				nullVal := value.(*sql.NullInt64)
+				record[field.Name] = nil
+				if nullVal.Valid {
+					record[field.Name] = nullVal.Int64
+				}
+			}
+		case "float64":
+			{
+				nullVal := value.(*sql.NullFloat64)
+				record[field.Name] = nil
+				if nullVal.Valid {
+					record[field.Name] = nullVal.Float64
+				}
+			}
+		case "bool":
+			{
+				nullVal := value.(*sql.NullBool)
+				record[field.Name] = nil
+				if nullVal.Valid {
+					record[field.Name] = nullVal.Bool
+				}
+			}
+		default:
+			nullVal := value.(*sql.NullString)
+			record[field.Name] = nil
+			if nullVal.Valid {
+				record[field.Name] = nullVal.String
+			}
+		}
+	}
+	return
+}
+
+func getDataType(dbColType string) (colType string) {
+	var columnTypeDict = map[string]string{
+		"VARCHAR":  "string",
+		"TEXT":     "string",
+		"NVARCHAR": "string",
+		"DATETIME": "float64",
+		"DECIMAL":  "float64",
+		"BOOL":     "bool",
+		"INT":      "int64",
+		"BIGINT":   "int64",
+	}
+
+	colType, ok := columnTypeDict[dbColType]
+	if ok {
+		return
+	}
+
+	colType = "string"
+	return
+}
+
+// QueryRow 执行MySQL Query语句，返回１条或０条数据
+func (md *MysqlDB) QueryRow(stmt string) (row *QueryRow, err error) {
+	defer func() {
+		if err != nil {
+			err = fmt.Errorf("query row failed <-- %s", err.Error())
+		}
+	}()
+
+	queryRows, err := md.QueryRows(stmt)
+	if err != nil {
+		return
+	}
+
+	if len(queryRows.Records) < 1 {
+		return
+	}
+
+	row = newQueryRow()
+	row.Fields = queryRows.Fields
+	row.Record = queryRows.Records[0]
+
+	return
+}
+
+// ExecChange 执行MySQL DML Query语句
+func (md *MysqlDB) ExecChange(stmt string, args ...interface{}) (
+	result sql.Result, err error) {
+	defer func() {
+		if err != nil {
+			err = fmt.Errorf("execute dml failed <-- %s", err.Error())
+		}
+	}()
+
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
+	defer cancel()
+
+	conn, err := md.getRealConnection(ctx)
+	if conn != nil {
+		defer conn.Close()
+	}
+	if err != nil {
+		return
+	}
+
+	result, err = conn.ExecContext(ctx, stmt, args...)
+	return
+}
+
+func (md *MysqlDB) fillConnStr() string {
+	dbServerInfoStr := fmt.Sprintf("%s:%s@tcp(%s:%d)/%s",
+		md.UserName, md.Passwd, md.IP, md.Port, md.DBName)
+	if md.ConnectTimeout > 0 {
+		dbServerInfoStr = fmt.Sprintf("%s?timeout=%ds&readTimeout=%ds&writeTimeout=%ds",
+			dbServerInfoStr, md.ConnectTimeout, md.ConnectTimeout, md.ConnectTimeout)
+	}
+
+	return dbServerInfoStr
+}

vendor/github.com/zr-hebo/util-db/query_pooled_db.go

@@ -0,0 +1,105 @@
+package db
+
+import (
+	"database/sql"
+	"sync"
+	"time"
+)
+
+
+// PooledMysqlDB Mysql主机实例
+type PooledMysqlDB struct {
+	MysqlDB
+	conn *sql.DB
+	lock *sync.Mutex
+}
+
+// NewPooledMysqlDBWithParam 带参数创建MySQL数据库
+func NewPooledMysqlDBWithParam(
+	ip string, port int, userName, passwd string) (
+	pmd *PooledMysqlDB) {
+	pmd = NewPooledMysqlDB()
+	pmd.IP = ip
+	pmd.Port = port
+	pmd.UserName = userName
+	pmd.Passwd = passwd
+	pmd.DatabaseType = dbTypeMysql
+
+	return
+}
+
+// NewPooledMysqlDBWithAllParam 带参数创建MySQL数据库
+func NewPooledMysqlDBWithAllParam(
+	ip string, port int, userName, passwd, dbName string) (
+	pmd *PooledMysqlDB) {
+	pmd = NewPooledMysqlDB()
+	pmd.IP = ip
+	pmd.Port = port
+	pmd.UserName = userName
+	pmd.Passwd = passwd
+	pmd.DBName = dbName
+
+	return
+}
+
+// NewPooledMysqlDB 创建MySQL数据库
+func NewPooledMysqlDB() (pmd *PooledMysqlDB) {
+	pmd = new(PooledMysqlDB)
+	pmd.DatabaseType = dbTypeMysql
+	pmd.lock = new(sync.Mutex)
+	return
+}
+
+// CloseConnection 获取数据库连接
+func (pmd *PooledMysqlDB) CloseConnection() (err error) {
+	if pmd.conn == nil {
+		return
+	}
+
+	err = pmd.conn.Close()
+	return
+}
+
+// GetConnection 获取数据库连接
+func (pmd *PooledMysqlDB) GetConnection() (conn *sql.DB, err error) {
+	pmd.lock.Lock()
+	defer func() {
+		pmd.lock.Unlock()
+	}()
+
+	if pmd.conn != nil {
+		conn = pmd.conn
+		return
+	}
+
+	conn, err = pmd.MysqlDB.getConnection()
+	if err != nil {
+		return
+	}
+
+	conn.SetConnMaxLifetime(time.Second * 60 * 30)
+	conn.SetMaxOpenConns(0)
+	if err := conn.Ping(); err != nil {
+		return nil, err
+	}
+	pmd.conn = conn
+
+	return
+}
+
+// ExecChange 执行MySQL Query语句
+func (pmd *PooledMysqlDB) ExecChange(stmt string, args ...interface{}) (
+	result sql.Result, err error) {
+	return pmd.MysqlDB.ExecChange(stmt, args...)
+}
+
+// QueryRows 执行MySQL Query语句
+func (pmd *PooledMysqlDB) QueryRows(stmt string) (queryRows *QueryRows, err error) {
+	return pmd.MysqlDB.QueryRows(stmt)
+
+}
+
+// QueryRow 执行MySQL Query语句
+func (pmd *PooledMysqlDB) QueryRow(stmt string) (row *QueryRow, err error) {
+	return pmd.MysqlDB.QueryRow(stmt)
+}

vendor/github.com/zr-hebo/util-db/scanner.go

@@ -0,0 +1,54 @@
+package db
+
+import (
+	"database/sql"
+	"fmt"
+)
+
+// CheckPair CheckPair
+type CheckPair struct {
+	Host
+	UserErp string `json:"erp"`
+	DBName  string `json:"dbname"`
+}
+
+func (cp *CheckPair) String() string {
+	return fmt.Sprintf(
+		"check if %s can visit %s@%s:%d", cp.UserErp, cp.DBName, cp.IP, cp.Port)
+}
+
+// Scanner SQL rows读取器
+type Scanner interface {
+	Scan(*sql.Rows, ...*string) error
+}
+
+type showNullScanner struct {
+}
+
+// NewShowNullScanner 显示NULL值的接收器，要求Scan的时候传入的参数是string类型
+func NewShowNullScanner() (s Scanner) {
+	return new(showNullScanner)
+}
+
+func (ns *showNullScanner) Scan(
+	rows *sql.Rows, receivers ...*string) (err error) {
+	nullReceivers := make([]interface{}, 0, len(receivers))
+	for range receivers {
+		nullReceivers = append(nullReceivers, &sql.NullString{})
+	}
+
+	if err = rows.Scan(nullReceivers...); err != nil {
+		return
+	}
+
+	for i, rv := range nullReceivers {
+		nullReceiver := rv.(*sql.NullString)
+		if nullReceiver.Valid {
+			*receivers[i] = nullReceiver.String
+		} else {
+			*receivers[i] = "NULL"
+		}
+	}
+
+	return
+}