622 lines
17 KiB
Go
622 lines
17 KiB
Go
package main
|
|
|
|
import (
|
|
"crypto/rand"
|
|
"database/sql"
|
|
"encoding/hex"
|
|
"fmt"
|
|
"io"
|
|
"log"
|
|
"os"
|
|
"sort"
|
|
"strings"
|
|
"time"
|
|
|
|
_ "modernc.org/sqlite"
|
|
)
|
|
|
|
var DB *sql.DB
|
|
|
|
// ============================================================
|
|
// 数据库版本常量
|
|
// ============================================================
|
|
|
|
const (
|
|
SchemaVersion = "v2" // 当前数据库 Schema 版本
|
|
)
|
|
|
|
// ============================================================
|
|
// 数据模型
|
|
// ============================================================
|
|
|
|
type GlobalConfig struct {
|
|
ID int `json:"id"`
|
|
ServerAddr string `json:"serverAddr"`
|
|
ServerPort int `json:"serverPort"`
|
|
Token string `json:"token"`
|
|
LogLevel string `json:"logLevel"`
|
|
LogMaxDays int `json:"logMaxDays"`
|
|
TcpMux bool `json:"tcpMux"`
|
|
TcpMuxKeepalive int `json:"tcpMuxKeepalive"`
|
|
HeartbeatInterval int `json:"heartbeatInterval"`
|
|
HeartbeatTimeout int `json:"heartbeatTimeout"`
|
|
PoolCount int `json:"poolCount"`
|
|
WireProtocolV2 bool `json:"wireProtocolV2"`
|
|
}
|
|
|
|
type Proxy struct {
|
|
ID int `json:"id"`
|
|
Name string `json:"name"`
|
|
Type string `json:"type"`
|
|
LocalIP string `json:"localIP"`
|
|
LocalPort int `json:"localPort"`
|
|
RemotePort int `json:"remotePort"`
|
|
Enabled bool `json:"enabled"`
|
|
}
|
|
|
|
type User struct {
|
|
ID int `json:"id"`
|
|
Username string `json:"username"`
|
|
PasswordHash string `json:"-"`
|
|
CreatedAt string `json:"createdAt"`
|
|
}
|
|
|
|
// ============================================================
|
|
// 数据库初始化
|
|
// ============================================================
|
|
|
|
func InitDB() error {
|
|
var err error
|
|
DB, err = sql.Open("sqlite", "./frpc-console.db")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := createTables(); err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := runMigrations(); err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := ensureJwtSecret(); err != nil {
|
|
return err
|
|
}
|
|
|
|
log.Println("✅ 数据库初始化完成 (Schema " + SchemaVersion + ")")
|
|
return nil
|
|
}
|
|
|
|
// ============================================================
|
|
// 建表
|
|
// ============================================================
|
|
|
|
func createTables() error {
|
|
// 用户表
|
|
_, err := DB.Exec(`
|
|
CREATE TABLE IF NOT EXISTS users (
|
|
id INTEGER PRIMARY KEY AUTOINCREMENT,
|
|
username TEXT UNIQUE NOT NULL,
|
|
password_hash TEXT NOT NULL,
|
|
created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
|
|
updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
|
|
)
|
|
`)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// 全局配置表
|
|
_, err = DB.Exec(`
|
|
CREATE TABLE IF NOT EXISTS global_config (
|
|
id INTEGER PRIMARY KEY CHECK (id = 1),
|
|
server_addr TEXT NOT NULL DEFAULT 'frp.example.com',
|
|
server_port INTEGER NOT NULL DEFAULT 7000,
|
|
token TEXT NOT NULL DEFAULT 'CHANGE_ME',
|
|
log_level TEXT NOT NULL DEFAULT 'info',
|
|
log_max_days INTEGER NOT NULL DEFAULT 3,
|
|
tcp_mux INTEGER NOT NULL DEFAULT 1,
|
|
tcp_mux_keepalive INTEGER NOT NULL DEFAULT 30,
|
|
heartbeat_interval INTEGER NOT NULL DEFAULT 15,
|
|
heartbeat_timeout INTEGER NOT NULL DEFAULT 70,
|
|
pool_count INTEGER NOT NULL DEFAULT 8,
|
|
wire_protocol_v2 INTEGER NOT NULL DEFAULT 0,
|
|
updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
|
|
)
|
|
`)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// 隧道表
|
|
_, err = DB.Exec(`
|
|
CREATE TABLE IF NOT EXISTS proxies (
|
|
id INTEGER PRIMARY KEY AUTOINCREMENT,
|
|
name TEXT UNIQUE NOT NULL,
|
|
type TEXT NOT NULL DEFAULT 'tcp',
|
|
local_ip TEXT NOT NULL,
|
|
local_port INTEGER NOT NULL,
|
|
remote_port INTEGER NOT NULL,
|
|
enabled INTEGER NOT NULL DEFAULT 1,
|
|
created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
|
|
updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
|
|
)
|
|
`)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// 应用配置表
|
|
_, err = DB.Exec(`
|
|
CREATE TABLE IF NOT EXISTS app_config (
|
|
key TEXT PRIMARY KEY,
|
|
value TEXT NOT NULL,
|
|
updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
|
|
)
|
|
`)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// 初始化默认配置
|
|
var count int
|
|
DB.QueryRow("SELECT COUNT(*) FROM global_config").Scan(&count)
|
|
if count == 0 {
|
|
_, err = DB.Exec(`
|
|
INSERT INTO global_config (
|
|
id, server_addr, server_port, token, log_level, log_max_days,
|
|
tcp_mux, tcp_mux_keepalive, heartbeat_interval, heartbeat_timeout, pool_count,
|
|
wire_protocol_v2
|
|
) VALUES (1, 'frp.example.com', 7000, 'CHANGE_ME', 'info', 3, 1, 30, 15, 70, 8, 0)
|
|
`)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
log.Println("✅ 全局配置初始化完成")
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// ============================================================
|
|
// 迁移引擎
|
|
// ============================================================
|
|
|
|
func getCurrentSchemaVersion() string {
|
|
var version string
|
|
err := DB.QueryRow("SELECT value FROM app_config WHERE key = 'schema_version'").Scan(&version)
|
|
if err != nil {
|
|
if err == sql.ErrNoRows {
|
|
var count int
|
|
DB.QueryRow("SELECT COUNT(*) FROM users").Scan(&count)
|
|
if count > 0 {
|
|
return "v1"
|
|
}
|
|
return SchemaVersion
|
|
}
|
|
log.Printf("⚠️ 读取 Schema 版本失败: %v", err)
|
|
return "v1"
|
|
}
|
|
return version
|
|
}
|
|
|
|
func setSchemaVersion(version string) error {
|
|
_, err := DB.Exec(`
|
|
INSERT INTO app_config (key, value) VALUES ('schema_version', ?)
|
|
ON CONFLICT(key) DO UPDATE SET value = excluded.value, updated_at = CURRENT_TIMESTAMP
|
|
`, version)
|
|
return err
|
|
}
|
|
|
|
func backupDatabase() (string, error) {
|
|
src := "./frpc-console.db"
|
|
if _, err := os.Stat(src); os.IsNotExist(err) {
|
|
return "", nil
|
|
}
|
|
|
|
timestamp := time.Now().Format("20060102_150405")
|
|
dst := fmt.Sprintf("./frpc-console.db.pre-%s.%s", SchemaVersion, timestamp)
|
|
|
|
srcFile, err := os.Open(src)
|
|
if err != nil {
|
|
return "", fmt.Errorf("打开源数据库失败: %w", err)
|
|
}
|
|
defer srcFile.Close()
|
|
|
|
dstFile, err := os.Create(dst)
|
|
if err != nil {
|
|
return "", fmt.Errorf("创建备份文件失败: %w", err)
|
|
}
|
|
defer dstFile.Close()
|
|
|
|
if _, err := io.Copy(dstFile, srcFile); err != nil {
|
|
return "", fmt.Errorf("复制数据库失败: %w", err)
|
|
}
|
|
|
|
log.Printf("✅ 数据库备份完成: %s", dst)
|
|
return dst, nil
|
|
}
|
|
|
|
func restoreDatabase(backupPath string) error {
|
|
srcFile, err := os.Open(backupPath)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer srcFile.Close()
|
|
|
|
dstFile, err := os.Create("./frpc-console.db")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer dstFile.Close()
|
|
|
|
if _, err := io.Copy(dstFile, srcFile); err != nil {
|
|
return err
|
|
}
|
|
|
|
log.Printf("✅ 数据库已从备份恢复: %s", backupPath)
|
|
return nil
|
|
}
|
|
|
|
func runMigrations() error {
|
|
currentVer := getCurrentSchemaVersion()
|
|
targetVer := SchemaVersion
|
|
|
|
log.Printf("📌 当前数据库 Schema: %s, 目标版本: %s", currentVer, targetVer)
|
|
|
|
if currentVer == targetVer {
|
|
// 检查数据库是否包含有效数据
|
|
var userCount int
|
|
err := DB.QueryRow("SELECT COUNT(*) FROM users").Scan(&userCount)
|
|
if err != nil || userCount == 0 {
|
|
log.Println(" 数据库为空或无效，无需迁移，直接初始化")
|
|
return nil
|
|
}
|
|
log.Println("✅ Schema 已是最新，数据库有效")
|
|
return nil
|
|
}
|
|
|
|
log.Printf("🔄 检测到版本变更 (%s → %s)，开始迁移...", currentVer, targetVer)
|
|
|
|
backupPath, err := backupDatabase()
|
|
if err != nil {
|
|
return fmt.Errorf("备份数据库失败: %w", err)
|
|
}
|
|
if backupPath != "" {
|
|
log.Printf("📦 备份文件: %s", backupPath)
|
|
}
|
|
|
|
currentSchema := getSchemaDef(currentVer)
|
|
targetSchema := getSchemaDef(targetVer)
|
|
|
|
if targetSchema == nil {
|
|
return fmt.Errorf("目标 Schema 版本 %s 未在 schemaHistory 中定义", targetVer)
|
|
}
|
|
|
|
if currentSchema == nil || schemaVersionsEqual(currentSchema, targetSchema) {
|
|
log.Println(" 迁移类型: 轻量复制（Schema 无变更）")
|
|
// 验证数据库是否有效
|
|
var userCount int
|
|
err := DB.QueryRow("SELECT COUNT(*) FROM users").Scan(&userCount)
|
|
if err != nil || userCount == 0 {
|
|
log.Println(" 数据库为空或无效，跳过迁移，直接初始化")
|
|
return nil
|
|
}
|
|
log.Println(" 数据库有效，继续使用")
|
|
} else {
|
|
log.Println(" 迁移类型: 重型迁移（Schema 有变更，新建表 + 搬数据）")
|
|
if err := heavyMigration(currentSchema, targetSchema); err != nil {
|
|
if backupPath != "" {
|
|
log.Printf("❌ 迁移失败，尝试恢复备份: %s", backupPath)
|
|
if restoreErr := restoreDatabase(backupPath); restoreErr != nil {
|
|
log.Printf("⚠️ 恢复备份失败: %v", restoreErr)
|
|
}
|
|
}
|
|
return fmt.Errorf("重型迁移失败: %w", err)
|
|
}
|
|
}
|
|
|
|
if err := setSchemaVersion(targetVer); err != nil {
|
|
return fmt.Errorf("更新 Schema 版本失败: %w", err)
|
|
}
|
|
|
|
log.Printf("✅ 迁移完成，当前 Schema: %s", targetVer)
|
|
return nil
|
|
}
|
|
|
|
func heavyMigration(oldDef, newDef *SchemaVersionDef) error {
|
|
if oldDef == nil {
|
|
return fmt.Errorf("旧 Schema 定义为空，无法执行重型迁移")
|
|
}
|
|
|
|
oldTable := oldDef.TableName
|
|
newTable := oldTable + "_new"
|
|
|
|
createSQL := buildCreateTableSQL(newTable, newDef)
|
|
log.Printf(" 创建新表: %s", newTable)
|
|
if _, err := DB.Exec(createSQL); err != nil {
|
|
return fmt.Errorf("创建新表失败: %w", err)
|
|
}
|
|
|
|
insertSQL, err := buildInsertSQL(oldTable, newTable, oldDef, newDef)
|
|
if err != nil {
|
|
return fmt.Errorf("构建数据迁移 SQL 失败: %w", err)
|
|
}
|
|
log.Printf(" 迁移数据: %s → %s", oldTable, newTable)
|
|
if _, err := DB.Exec(insertSQL); err != nil {
|
|
return fmt.Errorf("数据迁移失败: %w", err)
|
|
}
|
|
|
|
var oldCount, newCount int
|
|
DB.QueryRow(fmt.Sprintf("SELECT COUNT(*) FROM %s", oldTable)).Scan(&oldCount)
|
|
DB.QueryRow(fmt.Sprintf("SELECT COUNT(*) FROM %s", newTable)).Scan(&newCount)
|
|
if oldCount != newCount {
|
|
return fmt.Errorf("数据迁移不完整: 旧表 %d 行，新表 %d 行", oldCount, newCount)
|
|
}
|
|
log.Printf(" 数据迁移验证通过: %d 行", newCount)
|
|
|
|
tempTable := oldTable + "_old_temp"
|
|
if _, err := DB.Exec(fmt.Sprintf("ALTER TABLE %s RENAME TO %s", oldTable, tempTable)); err != nil {
|
|
return fmt.Errorf("重命名旧表失败: %w", err)
|
|
}
|
|
if _, err := DB.Exec(fmt.Sprintf("ALTER TABLE %s RENAME TO %s", newTable, oldTable)); err != nil {
|
|
DB.Exec(fmt.Sprintf("ALTER TABLE %s RENAME TO %s", tempTable, oldTable))
|
|
return fmt.Errorf("重命名新表失败: %w", err)
|
|
}
|
|
if _, err := DB.Exec(fmt.Sprintf("DROP TABLE %s", tempTable)); err != nil {
|
|
log.Printf("⚠️ 删除临时表失败（不影响使用）: %v", err)
|
|
}
|
|
|
|
log.Printf(" 表交换完成: %s (新表已生效)", oldTable)
|
|
return nil
|
|
}
|
|
|
|
func buildCreateTableSQL(tableName string, def *SchemaVersionDef) string {
|
|
var cols []string
|
|
var primaryKey string
|
|
|
|
names := make([]string, 0, len(def.Columns))
|
|
for name := range def.Columns {
|
|
names = append(names, name)
|
|
}
|
|
sort.Strings(names)
|
|
|
|
for _, name := range names {
|
|
col := def.Columns[name]
|
|
parts := []string{name, col.Type}
|
|
if col.NotNull {
|
|
parts = append(parts, "NOT NULL")
|
|
}
|
|
if col.Default != "" {
|
|
parts = append(parts, "DEFAULT "+col.Default)
|
|
}
|
|
if col.Primary {
|
|
primaryKey = "PRIMARY KEY (" + name + ")"
|
|
} else {
|
|
cols = append(cols, strings.Join(parts, " "))
|
|
}
|
|
}
|
|
|
|
if primaryKey != "" {
|
|
cols = append(cols, primaryKey)
|
|
}
|
|
|
|
return fmt.Sprintf("CREATE TABLE %s (\n %s\n)", tableName, strings.Join(cols, ",\n "))
|
|
}
|
|
|
|
func buildInsertSQL(oldTable, newTable string, oldDef, newDef *SchemaVersionDef) (string, error) {
|
|
newCols := make([]string, 0, len(newDef.Columns))
|
|
for name := range newDef.Columns {
|
|
newCols = append(newCols, name)
|
|
}
|
|
sort.Strings(newCols)
|
|
|
|
var selectParts []string
|
|
var colNames []string
|
|
|
|
for _, name := range newCols {
|
|
colNames = append(colNames, name)
|
|
if _, ok := oldDef.Columns[name]; ok {
|
|
selectParts = append(selectParts, name)
|
|
} else {
|
|
colDef := newDef.Columns[name]
|
|
if colDef.Default != "" {
|
|
selectParts = append(selectParts, colDef.Default+" AS "+name)
|
|
} else if colDef.Type == "INTEGER" {
|
|
selectParts = append(selectParts, "0 AS "+name)
|
|
} else if colDef.Type == "TEXT" {
|
|
selectParts = append(selectParts, "'' AS "+name)
|
|
} else {
|
|
selectParts = append(selectParts, "NULL AS "+name)
|
|
}
|
|
}
|
|
}
|
|
|
|
return fmt.Sprintf(
|
|
"INSERT INTO %s (%s) SELECT %s FROM %s",
|
|
newTable,
|
|
strings.Join(colNames, ", "),
|
|
strings.Join(selectParts, ", "),
|
|
oldTable,
|
|
), nil
|
|
}
|
|
|
|
// ============================================================
|
|
// JWT 密钥管理
|
|
// ============================================================
|
|
|
|
func ensureJwtSecret() error {
|
|
var value string
|
|
err := DB.QueryRow("SELECT value FROM app_config WHERE key = 'jwt_secret'").Scan(&value)
|
|
if err == nil && value != "" {
|
|
return nil
|
|
}
|
|
|
|
bytes := make([]byte, 32)
|
|
if _, err := rand.Read(bytes); err != nil {
|
|
return err
|
|
}
|
|
secret := hex.EncodeToString(bytes)
|
|
|
|
_, err = DB.Exec(`
|
|
INSERT INTO app_config (key, value) VALUES ('jwt_secret', ?)
|
|
`, secret)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
log.Printf("✅ JWT 密钥已生成")
|
|
return nil
|
|
}
|
|
|
|
func GetJwtSecret() (string, error) {
|
|
var secret string
|
|
err := DB.QueryRow("SELECT value FROM app_config WHERE key = 'jwt_secret'").Scan(&secret)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
return secret, nil
|
|
}
|
|
|
|
// ============================================================
|
|
// 全局配置 CRUD
|
|
// ============================================================
|
|
|
|
func GetGlobalConfig() (*GlobalConfig, error) {
|
|
var cfg GlobalConfig
|
|
err := DB.QueryRow(`
|
|
SELECT id, server_addr, server_port, token, log_level, log_max_days,
|
|
tcp_mux, tcp_mux_keepalive, heartbeat_interval, heartbeat_timeout, pool_count,
|
|
wire_protocol_v2
|
|
FROM global_config WHERE id = 1
|
|
`).Scan(
|
|
&cfg.ID, &cfg.ServerAddr, &cfg.ServerPort, &cfg.Token,
|
|
&cfg.LogLevel, &cfg.LogMaxDays, &cfg.TcpMux, &cfg.TcpMuxKeepalive,
|
|
&cfg.HeartbeatInterval, &cfg.HeartbeatTimeout, &cfg.PoolCount,
|
|
&cfg.WireProtocolV2,
|
|
)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
cfg.TcpMux = true
|
|
return &cfg, nil
|
|
}
|
|
|
|
func UpdateGlobalConfig(cfg *GlobalConfig) error {
|
|
_, err := DB.Exec(`
|
|
UPDATE global_config SET
|
|
server_addr = ?, server_port = ?, token = ?, log_level = ?, log_max_days = ?,
|
|
tcp_mux = 1,
|
|
tcp_mux_keepalive = ?, heartbeat_interval = ?, heartbeat_timeout = ?, pool_count = ?,
|
|
wire_protocol_v2 = ?,
|
|
updated_at = CURRENT_TIMESTAMP
|
|
WHERE id = 1
|
|
`, cfg.ServerAddr, cfg.ServerPort, cfg.Token, cfg.LogLevel, cfg.LogMaxDays,
|
|
cfg.TcpMuxKeepalive, cfg.HeartbeatInterval, cfg.HeartbeatTimeout, cfg.PoolCount,
|
|
cfg.WireProtocolV2)
|
|
return err
|
|
}
|
|
|
|
// ============================================================
|
|
// 隧道 CRUD
|
|
// ============================================================
|
|
|
|
func GetProxies() ([]Proxy, error) {
|
|
rows, err := DB.Query(`
|
|
SELECT id, name, type, local_ip, local_port, remote_port, enabled
|
|
FROM proxies ORDER BY id
|
|
`)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer rows.Close()
|
|
|
|
var proxies []Proxy
|
|
for rows.Next() {
|
|
var p Proxy
|
|
err := rows.Scan(&p.ID, &p.Name, &p.Type, &p.LocalIP, &p.LocalPort, &p.RemotePort, &p.Enabled)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
proxies = append(proxies, p)
|
|
}
|
|
return proxies, rows.Err()
|
|
}
|
|
|
|
func GetProxy(id int) (*Proxy, error) {
|
|
var p Proxy
|
|
err := DB.QueryRow(`
|
|
SELECT id, name, type, local_ip, local_port, remote_port, enabled
|
|
FROM proxies WHERE id = ?
|
|
`, id).Scan(&p.ID, &p.Name, &p.Type, &p.LocalIP, &p.LocalPort, &p.RemotePort, &p.Enabled)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &p, nil
|
|
}
|
|
|
|
func CreateProxy(p *Proxy) error {
|
|
result, err := DB.Exec(`
|
|
INSERT INTO proxies (name, type, local_ip, local_port, remote_port, enabled)
|
|
VALUES (?, ?, ?, ?, ?, ?)
|
|
`, p.Name, p.Type, p.LocalIP, p.LocalPort, p.RemotePort, p.Enabled)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
id, _ := result.LastInsertId()
|
|
p.ID = int(id)
|
|
return nil
|
|
}
|
|
|
|
func UpdateProxy(p *Proxy) error {
|
|
_, err := DB.Exec(`
|
|
UPDATE proxies SET
|
|
name = ?, type = ?, local_ip = ?, local_port = ?, remote_port = ?, enabled = ?,
|
|
updated_at = CURRENT_TIMESTAMP
|
|
WHERE id = ?
|
|
`, p.Name, p.Type, p.LocalIP, p.LocalPort, p.RemotePort, p.Enabled, p.ID)
|
|
return err
|
|
}
|
|
|
|
func DeleteProxy(id int) error {
|
|
_, err := DB.Exec("DELETE FROM proxies WHERE id = ?", id)
|
|
return err
|
|
}
|
|
|
|
// ============================================================
|
|
// 用户 CRUD
|
|
// ============================================================
|
|
|
|
func GetUserByUsername(username string) (*User, error) {
|
|
var u User
|
|
err := DB.QueryRow(`
|
|
SELECT id, username, password_hash, created_at
|
|
FROM users WHERE username = ?
|
|
`, username).Scan(&u.ID, &u.Username, &u.PasswordHash, &u.CreatedAt)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &u, nil
|
|
}
|
|
|
|
func CreateUser(username, passwordHash string) error {
|
|
_, err := DB.Exec(`
|
|
INSERT INTO users (username, password_hash) VALUES (?, ?)
|
|
`, username, passwordHash)
|
|
return err
|
|
}
|
|
|
|
func UpdatePassword(username, passwordHash string) error {
|
|
_, err := DB.Exec(`
|
|
UPDATE users SET password_hash = ?, updated_at = CURRENT_TIMESTAMP
|
|
WHERE username = ?
|
|
`, passwordHash, username)
|
|
return err
|
|
}
|
|
|
|
func CountUsers() (int, error) {
|
|
var count int
|
|
err := DB.QueryRow("SELECT COUNT(*) FROM users").Scan(&count)
|
|
return count, err
|
|
}
|