mirror of
https://github.com/nshttpd/mikrotik-exporter.git
synced 2024-11-15 10:15:18 +01:00
3b33400d24
* Add health collector for voltage & temperature * Run gofmt * Add help text to health collector
407 lines
9.3 KiB
Go
407 lines
9.3 KiB
Go
package collector
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import (
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"crypto/md5"
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"crypto/tls"
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"encoding/hex"
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"errors"
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"fmt"
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"io"
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"net"
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"os"
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"strconv"
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"strings"
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"sync"
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"time"
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"mikrotik-exporter/config"
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"github.com/miekg/dns"
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"github.com/prometheus/client_golang/prometheus"
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log "github.com/sirupsen/logrus"
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routeros "gopkg.in/routeros.v2"
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)
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const (
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namespace = "mikrotik"
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apiPort = "8728"
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apiPortTLS = "8729"
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dnsPort = 53
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// DefaultTimeout defines the default timeout when connecting to a router
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DefaultTimeout = 5 * time.Second
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)
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var (
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scrapeDurationDesc = prometheus.NewDesc(
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prometheus.BuildFQName(namespace, "scrape", "collector_duration_seconds"),
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"mikrotik_exporter: duration of a collector scrape",
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[]string{"device"},
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nil,
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)
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scrapeSuccessDesc = prometheus.NewDesc(
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prometheus.BuildFQName(namespace, "scrape", "collector_success"),
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"mikrotik_exporter: whether a collector succeeded",
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[]string{"device"},
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nil,
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)
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)
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type collector struct {
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devices []config.Device
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collectors []routerOSCollector
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timeout time.Duration
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enableTLS bool
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insecureTLS bool
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}
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// WithBGP enables BGP routing metrics
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func WithBGP() Option {
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return func(c *collector) {
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c.collectors = append(c.collectors, newBGPCollector())
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}
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}
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// WithRoutes enables routing table metrics
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func WithRoutes() Option {
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return func(c *collector) {
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c.collectors = append(c.collectors, newRoutesCollector())
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}
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}
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// WithDHCP enables DHCP serrver metrics
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func WithDHCP() Option {
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return func(c *collector) {
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c.collectors = append(c.collectors, newDHCPCollector())
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}
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}
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// WithDHCPL enables DHCP server leases
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func WithDHCPL() Option {
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return func(c *collector) {
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c.collectors = append(c.collectors, newDHCPLCollector())
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}
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}
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// WithDHCPv6 enables DHCPv6 serrver metrics
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func WithDHCPv6() Option {
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return func(c *collector) {
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c.collectors = append(c.collectors, newDHCPv6Collector())
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}
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}
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// WithHealth enables board Health metrics
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func WithHealth() Option {
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return func(c *collector) {
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c.collectors = append(c.collectors, newhealthCollector())
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}
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}
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// WithPOE enables PoE metrics
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func WithPOE() Option {
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return func(c *collector) {
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c.collectors = append(c.collectors, newPOECollector())
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}
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}
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// WithPools enables IP(v6) pool metrics
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func WithPools() Option {
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return func(c *collector) {
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c.collectors = append(c.collectors, newPoolCollector())
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}
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}
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// WithOptics enables optical diagnstocs
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func WithOptics() Option {
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return func(c *collector) {
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c.collectors = append(c.collectors, newOpticsCollector())
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}
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}
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// WithW60G enables w60g metrics
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func WithW60G() Option {
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return func(c *collector) {
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c.collectors = append(c.collectors, neww60gInterfaceCollector())
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}
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}
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// WithWlanSTA enables wlan STA metrics
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func WithWlanSTA() Option {
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return func(c *collector) {
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c.collectors = append(c.collectors, newWlanSTACollector())
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}
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}
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// WithWlanIF enables wireless interface metrics
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func WithWlanIF() Option {
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return func(c *collector) {
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c.collectors = append(c.collectors, newWlanIFCollector())
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}
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}
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// WithMonitor enables ethernet monitor collector metrics
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func Monitor() Option {
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return func(c *collector) {
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c.collectors = append(c.collectors, newMonitorCollector())
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}
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}
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// WithTimeout sets timeout for connecting to router
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func WithTimeout(d time.Duration) Option {
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return func(c *collector) {
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c.timeout = d
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}
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}
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// WithTLS enables TLS
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func WithTLS(insecure bool) Option {
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return func(c *collector) {
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c.enableTLS = true
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c.insecureTLS = true
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}
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}
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// WithIpsec enables ipsec metrics
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func WithIpsec() Option {
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return func(c *collector) {
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c.collectors = append(c.collectors, newIpsecCollector())
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}
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}
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// Option applies options to collector
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type Option func(*collector)
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// NewCollector creates a collector instance
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func NewCollector(cfg *config.Config, opts ...Option) (prometheus.Collector, error) {
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log.WithFields(log.Fields{
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"numDevices": len(cfg.Devices),
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}).Info("setting up collector for devices")
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c := &collector{
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devices: cfg.Devices,
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timeout: DefaultTimeout,
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collectors: []routerOSCollector{
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newInterfaceCollector(),
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newResourceCollector(),
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},
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}
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for _, o := range opts {
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o(c)
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}
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return c, nil
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}
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// Describe implements the prometheus.Collector interface.
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func (c *collector) Describe(ch chan<- *prometheus.Desc) {
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ch <- scrapeDurationDesc
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ch <- scrapeSuccessDesc
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for _, co := range c.collectors {
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co.describe(ch)
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}
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}
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// Collect implements the prometheus.Collector interface.
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func (c *collector) Collect(ch chan<- prometheus.Metric) {
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wg := sync.WaitGroup{}
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var realDevices []config.Device
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for _, dev := range c.devices {
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if (config.SrvRecord{}) != dev.Srv {
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log.WithFields(log.Fields{
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"SRV": dev.Srv.Record,
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}).Info("SRV configuration detected")
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conf, _ := dns.ClientConfigFromFile("/etc/resolv.conf")
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dnsServer := net.JoinHostPort(conf.Servers[0], strconv.Itoa(dnsPort))
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if (config.DnsServer{}) != dev.Srv.Dns {
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dnsServer = net.JoinHostPort(dev.Srv.Dns.Address, strconv.Itoa(dev.Srv.Dns.Port))
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log.WithFields(log.Fields{
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"DnsServer": dnsServer,
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}).Info("Custom DNS config detected")
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}
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dnsMsg := new(dns.Msg)
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dnsCli := new(dns.Client)
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dnsMsg.RecursionDesired = true
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dnsMsg.SetQuestion(dns.Fqdn(dev.Srv.Record), dns.TypeSRV)
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r, _, err := dnsCli.Exchange(dnsMsg, dnsServer)
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if err != nil {
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os.Exit(1)
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}
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for _, k := range r.Answer {
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if s, ok := k.(*dns.SRV); ok {
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d := config.Device{}
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d.Name = strings.TrimRight(s.Target, ".")
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d.Address = strings.TrimRight(s.Target, ".")
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d.User = dev.User
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d.Password = dev.Password
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c.getIdentity(&d)
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realDevices = append(realDevices, d)
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}
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}
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} else {
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realDevices = append(realDevices, dev)
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}
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}
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wg.Add(len(realDevices))
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for _, dev := range realDevices {
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go func(d config.Device) {
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c.collectForDevice(d, ch)
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wg.Done()
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}(dev)
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}
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wg.Wait()
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}
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func (c *collector) getIdentity(d *config.Device) error {
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cl, err := c.connect(d)
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if err != nil {
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log.WithFields(log.Fields{
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"device": d.Name,
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"error": err,
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}).Error("error dialing device")
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return err
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}
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defer cl.Close()
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reply, err := cl.Run("/system/identity/print")
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if err != nil {
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log.WithFields(log.Fields{
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"device": d.Name,
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"error": err,
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}).Error("error fetching ethernet interfaces")
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return err
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}
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for _, id := range reply.Re {
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d.Name = id.Map["name"]
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}
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return nil
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}
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func (c *collector) collectForDevice(d config.Device, ch chan<- prometheus.Metric) {
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begin := time.Now()
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err := c.connectAndCollect(&d, ch)
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duration := time.Since(begin)
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var success float64
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if err != nil {
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log.Errorf("ERROR: %s collector failed after %fs: %s", d.Name, duration.Seconds(), err)
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success = 0
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} else {
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log.Debugf("OK: %s collector succeeded after %fs.", d.Name, duration.Seconds())
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success = 1
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}
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ch <- prometheus.MustNewConstMetric(scrapeDurationDesc, prometheus.GaugeValue, duration.Seconds(), d.Name)
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ch <- prometheus.MustNewConstMetric(scrapeSuccessDesc, prometheus.GaugeValue, success, d.Name)
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}
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func (c *collector) connectAndCollect(d *config.Device, ch chan<- prometheus.Metric) error {
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cl, err := c.connect(d)
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if err != nil {
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log.WithFields(log.Fields{
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"device": d.Name,
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"error": err,
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}).Error("error dialing device")
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return err
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}
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defer cl.Close()
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for _, co := range c.collectors {
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ctx := &collectorContext{ch, d, cl}
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err = co.collect(ctx)
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if err != nil {
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return err
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}
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}
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return nil
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}
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func (c *collector) connect(d *config.Device) (*routeros.Client, error) {
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var conn net.Conn
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var err error
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log.WithField("device", d.Name).Debug("trying to Dial")
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if !c.enableTLS {
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if (d.Port) == "" {
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d.Port = apiPort
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}
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conn, err = net.DialTimeout("tcp", d.Address+":"+d.Port, c.timeout)
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if err != nil {
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return nil, err
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}
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// return routeros.DialTimeout(d.Address+apiPort, d.User, d.Password, c.timeout)
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} else {
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tlsCfg := &tls.Config{
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InsecureSkipVerify: c.insecureTLS,
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}
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if (d.Port) == "" {
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d.Port = apiPortTLS
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}
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conn, err = tls.DialWithDialer(&net.Dialer{
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Timeout: c.timeout,
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},
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"tcp", d.Address+":"+d.Port, tlsCfg)
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if err != nil {
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return nil, err
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}
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}
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log.WithField("device", d.Name).Debug("done dialing")
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client, err := routeros.NewClient(conn)
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if err != nil {
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return nil, err
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}
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log.WithField("device", d.Name).Debug("got client")
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log.WithField("device", d.Name).Debug("trying to login")
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r, err := client.Run("/login", "=name="+d.User, "=password="+d.Password)
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if err != nil {
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return nil, err
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}
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ret, ok := r.Done.Map["ret"]
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if !ok {
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// Login method post-6.43 one stage, cleartext and no challenge
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if r.Done != nil {
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return client, nil
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}
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return nil, errors.New("RouterOS: /login: no ret (challenge) received")
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}
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// Login method pre-6.43 two stages, challenge
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b, err := hex.DecodeString(ret)
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if err != nil {
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return nil, fmt.Errorf("RouterOS: /login: invalid ret (challenge) hex string received: %s", err)
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}
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r, err = client.Run("/login", "=name="+d.User, "=response="+challengeResponse(b, d.Password))
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if err != nil {
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return nil, err
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}
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log.WithField("device", d.Name).Debug("done wth login")
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return client, nil
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//tlsCfg := &tls.Config{
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// InsecureSkipVerify: c.insecureTLS,
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//}
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// return routeros.DialTLSTimeout(d.Address+apiPortTLS, d.User, d.Password, tlsCfg, c.timeout)
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}
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func challengeResponse(cha []byte, password string) string {
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h := md5.New()
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h.Write([]byte{0})
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_, _ = io.WriteString(h, password)
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h.Write(cha)
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return fmt.Sprintf("00%x", h.Sum(nil))
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}
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