Files
network-topology-discovery/internal/device/parser.go
T
Your Name 3de2668286 Fix: 增强SSH会话管理和错误处理
- 添加会话创建重试机制(最多3次)
- 允许部分命令失败而不中断整个扫描
- 改进错误提示和日志输出
- 解决H3C设备LLDP命令会话拒绝问题
2026-04-25 23:00:23 +08:00

101 lines
2.4 KiB
Go

package device
import (
"fmt"
"network-topology-discovery/pkg/models"
sshclient "network-topology-discovery/internal/ssh"
)
// Parser 设备解析器接口
type Parser interface {
// GetCommands 获取需要执行的命令列表
GetCommands() []string
// Parse 解析命令输出,填充设备信息
Parse(device *models.Device, outputs []string) error
// GetType 获取设备类型
GetType() models.DeviceType
}
// BaseParser 基础解析器
type BaseParser struct {
DeviceType models.DeviceType
}
// GetType 获取设备类型
func (b *BaseParser) GetType() models.DeviceType {
return b.DeviceType
}
// DiscoverDevice 发现并采集设备信息
func DiscoverDevice(ip string, deviceType models.DeviceType, username, password string) (*models.Device, error) {
device := &models.Device{
IP: ip,
Type: deviceType,
}
// 创建SSH客户端 - 默认启用不安全加密算法以兼容老旧设备
client := sshclient.NewClient(sshclient.Config{
Host: ip,
Username: username,
Password: password,
InsecureCiphers: true, // 启用旧版加密算法支持
})
// 连接
if err := client.Connect(); err != nil {
device.ScanStatus = "failed"
device.ErrorMessage = err.Error()
return device, err
}
defer client.Close()
// 获取对应的解析器
var parser Parser
switch deviceType {
case models.DeviceTypeCisco:
parser = &CiscoParser{}
case models.DeviceTypeHuawei:
parser = &HuaweiParser{}
case models.DeviceTypeH3C:
parser = &H3CParser{}
case models.DeviceTypeASA:
parser = &ASAParser{}
case models.DeviceTypeLinux:
parser = &LinuxParser{}
case models.DeviceTypeWindows:
parser = &WindowsParser{}
default:
device.ScanStatus = "failed"
device.ErrorMessage = "unsupported device type"
return device, nil
}
// 获取命令列表
commands := parser.GetCommands()
// 执行命令 - 允许部分命令失败
outputs := make([]string, 0, len(commands))
for _, cmd := range commands {
output, err := client.ExecuteCommand(cmd)
if err != nil {
// 记录警告但继续执行其他命令
fmt.Printf("Warning: command '%s' failed: %v\n", cmd, err)
outputs = append(outputs, "")
} else {
outputs = append(outputs, output)
}
}
// 解析输出
if err := parser.Parse(device, outputs); err != nil {
device.ScanStatus = "failed"
device.ErrorMessage = err.Error()
return device, err
}
device.ScanStatus = "success"
return device, nil
}