News features and improvements (#8)

* added config file implementation, refactoring * add gitignore * improved test * preperations for more metrics * added resource metrics * added first bgp metrics * added asn as label for bgp metrics * added prefix and message counts to bgp metrics * simplified * Update README.md * added yaml dependency * fixed go routine call * added timeout * clean up * added TLS support * set default api port for TLS * added routes metric * added missing log information
2018-03-21 02:28:10 +01:00 · 2018-03-21 02:28:10 +01:00 · f2866a3a2f
parent c37abb638f
commit f2866a3a2f
340 changed files with 25181 additions and 3416 deletions
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,22 @@
+# 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/
+
+# IDE specific files
+.idea/
+*.iml
+.vscode
+debug
+
+mikrotik-exporter
--- a/Gopkg.lock
+++ b/Gopkg.lock
@ -8,10 +8,10 @@
  revision = "4c0e84591b9aa9e6dcfdf3e020114cd81f89d5f9"

 [[projects]]
-  branch = "master"
  name = "github.com/golang/protobuf"
  packages = ["proto"]
-  revision = "1e59b77b52bf8e4b449a57e6f79f21226d571845"
+  revision = "925541529c1fa6821df4e44ce2723319eb2be768"
+  version = "v1.0.0"

 [[projects]]
  name = "github.com/matttproud/golang_protobuf_extensions"
@ -21,7 +21,10 @@

 [[projects]]
  name = "github.com/prometheus/client_golang"
-  packages = ["prometheus","prometheus/promhttp"]
+  packages = [
+    "prometheus",
+    "prometheus/promhttp"
+  ]
  revision = "c5b7fccd204277076155f10851dad72b76a49317"
  version = "v0.8.0"

@ -34,41 +37,64 @@
 [[projects]]
  branch = "master"
  name = "github.com/prometheus/common"
-  packages = ["expfmt","internal/bitbucket.org/ww/goautoneg","model","version"]
-  revision = "2e54d0b93cba2fd133edc32211dcc32c06ef72ca"
+  packages = [
+    "expfmt",
+    "internal/bitbucket.org/ww/goautoneg",
+    "model",
+    "version"
+  ]
+  revision = "e4aa40a9169a88835b849a6efb71e05dc04b88f0"

 [[projects]]
  branch = "master"
  name = "github.com/prometheus/procfs"
-  packages = [".","xfs"]
-  revision = "a6e9df898b1336106c743392c48ee0b71f5c4efa"
+  packages = [
+    ".",
+    "internal/util",
+    "nfs",
+    "xfs"
+  ]
+  revision = "54d17b57dd7d4a3aa092476596b3f8a933bde349"

 [[projects]]
  name = "github.com/sirupsen/logrus"
  packages = ["."]
-  revision = "89742aefa4b206dcf400792f3bd35b542998eb3b"
+  revision = "c155da19408a8799da419ed3eeb0cb5db0ad5dbc"
+  version = "v1.0.5"

 [[projects]]
  branch = "master"
  name = "golang.org/x/crypto"
  packages = ["ssh/terminal"]
-  revision = "94eea52f7b742c7cbe0b03b22f0c4c8631ece122"
+  revision = "c3a3ad6d03f7a915c0f7e194b7152974bb73d287"

 [[projects]]
  branch = "master"
  name = "golang.org/x/sys"
-  packages = ["unix","windows"]
-  revision = "13fcbd661c8ececa8807a29b48407d674b1d8ed8"
+  packages = [
+    "unix",
+    "windows"
+  ]
+  revision = "d8e400bc7db4870d786864138af681469693d18c"

 [[projects]]
  branch = "v2"
  name = "gopkg.in/routeros.v2"
-  packages = [".","proto"]
-  revision = "ffdb88bba0376a797b733f2279f539340926617f"
+  packages = [
+    ".",
+    "proto"
+  ]
+  revision = "2dc19c12445caefdc2d128f7331dcc83284211ef"
+
+[[projects]]
+  name = "gopkg.in/yaml.v2"
+  packages = ["."]
+  revision = "7f97868eec74b32b0982dd158a51a446d1da7eb5"
+  version = "v2.1.1"

 [solve-meta]
  analyzer-name = "dep"
  analyzer-version = 1
-  inputs-digest = "a22b2a88c709e97dfa267610f7b2209353fbc37627effb3cfc9864a1f0892f09"
+  inputs-digest = "ff563df52a1af77a9de6d6c3bd29b66cac02221b5d9357d63f32e8503399d301"
  solver-name = "gps-cdcl"
  solver-version = 1
--- a/README.md
+++ b/README.md
@ -35,6 +35,25 @@ where `address` is the address of your router. `device` is the label name for th
 in the metrics output to prometheus. The `user` and `password` are the ones you
 created for the exporter to use to access the API.

+#### Config File
+
+`./mikrotik-exporter -config-file config.yml`
+
+where `config-file` is the path to a config file in YAML format.
+
+###### example config
+```
+devices:
+  - name: my_router
+    address: 10.10.0.1
+    user: prometheus
+    password: changeme
+  - name: my_second_router
+    address: 10.10.0.2
+    user: prometheus2
+    password: password_to_second_router
+```
+
 ###### example output

 ```
@ -47,4 +66,4 @@ mikrotik_interface_tx_byte{address="10.10.0.1",interface="ether7",name="my_route
 mikrotik_interface_tx_byte{address="10.10.0.1",interface="ether8",name="my_router"} 1.86405031e+08
 ```

- 
+ 
--- a/collector/bgp_collector.go
+++ b/collector/bgp_collector.go
@ -0,0 +1,112 @@
+package collector
+
+import (
+	"strconv"
+	"strings"
+
+	"github.com/nshttpd/mikrotik-exporter/config"
+	"github.com/prometheus/client_golang/prometheus"
+	log "github.com/sirupsen/logrus"
+	routeros "gopkg.in/routeros.v2"
+	"gopkg.in/routeros.v2/proto"
+)
+
+var (
+	bgpabelNames    = []string{"name", "address", "session", "asn"}
+	bgpProps        = []string{"name", "remote-as", "state", "prefix-count", "updates-sent", "updates-received", "withdrawn-sent", "withdrawn-received"}
+	bgpDescriptions map[string]*prometheus.Desc
+)
+
+func init() {
+	bgpDescriptions = make(map[string]*prometheus.Desc)
+	bgpDescriptions["state"] = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, "bgp", "up"),
+		"BGP session is established (up = 1)",
+		bgpabelNames,
+		nil,
+	)
+	for _, p := range bgpProps[3:] {
+		bgpDescriptions[p] = descriptionForPropertyName("bgp", p, bgpabelNames)
+	}
+}
+
+type bgpCollector struct {
+}
+
+func (c *bgpCollector) describe(ch chan<- *prometheus.Desc) {
+	for _, d := range bgpDescriptions {
+		ch <- d
+	}
+}
+
+func (c *bgpCollector) collect(ch chan<- prometheus.Metric, device *config.Device, client *routeros.Client) error {
+	stats, err := c.fetch(client, device)
+	if err != nil {
+		return err
+	}
+
+	for _, re := range stats {
+		c.collectForStat(re, device, ch)
+	}
+
+	return nil
+}
+
+func (c *bgpCollector) fetch(client *routeros.Client, device *config.Device) ([]*proto.Sentence, error) {
+	reply, err := client.Run("/routing/bgp/peer/print", "=.proplist="+strings.Join(bgpProps, ","))
+	if err != nil {
+		log.WithFields(log.Fields{
+			"device": device.Name,
+			"error":  err,
+		}).Error("error fetching bgp metrics")
+		return nil, err
+	}
+
+	return reply.Re, nil
+}
+
+func (c *bgpCollector) collectForStat(re *proto.Sentence, device *config.Device, ch chan<- prometheus.Metric) {
+	var session, asn string
+	for _, p := range bgpProps {
+		if p == "name" {
+			session = re.Map[p]
+		} else if p == "remote-as" {
+			asn = re.Map[p]
+		} else {
+			c.collectMetricForProperty(p, session, asn, device, re, ch)
+		}
+	}
+}
+
+func (c *bgpCollector) collectMetricForProperty(property, session, asn string, device *config.Device, re *proto.Sentence, ch chan<- prometheus.Metric) {
+	desc := bgpDescriptions[property]
+	v, err := c.parseValueForProperty(property, re.Map[property])
+	if err != nil {
+		log.WithFields(log.Fields{
+			"device":   device.Name,
+			"session":  session,
+			"property": property,
+			"value":    re.Map[property],
+			"error":    err,
+		}).Error("error parsing bgp metric value")
+		return
+	}
+
+	ch <- prometheus.MustNewConstMetric(desc, prometheus.GaugeValue, v, device.Name, device.Address, session, asn)
+}
+
+func (c *bgpCollector) parseValueForProperty(property, value string) (float64, error) {
+	if property == "state" {
+		if value == "established" {
+			return 1, nil
+		}
+
+		return 0, nil
+	}
+
+	if value == "" {
+		return 0, nil
+	}
+
+	return strconv.ParseFloat(value, 64)
+}
--- a/collector/collector.go
+++ b/collector/collector.go
@ -1,14 +1,24 @@
 package collector

 import (
+	"crypto/tls"
 	"sync"
 	"time"

+	"github.com/nshttpd/mikrotik-exporter/config"
 	"github.com/prometheus/client_golang/prometheus"
 	log "github.com/sirupsen/logrus"
+	routeros "gopkg.in/routeros.v2"
 )

-const namespace = "mikrotik"
+const (
+	namespace  = "mikrotik"
+	apiPort    = ":8728"
+	apiPortTLS = ":8729"
+
+	// DefaultTimeout defines the default timeout when connecting to a router
+	DefaultTimeout = 5 * time.Second
+)

 var (
 	scrapeDurationDesc = prometheus.NewDesc(
@ -25,54 +35,140 @@ var (
 	)
 )

-type deviceCollector struct {
-	Devices []Device
+type collector struct {
+	devices     []config.Device
+	collectors  []metricCollector
+	timeout     time.Duration
+	enableTLS   bool
+	insecureTLS bool
 }

-func NewDeviceCollector(cfg Config) (*deviceCollector, error) {
-	devices := make([]Device, len(cfg.Devices))
+// WithBGP enables BGP routing metrics
+func WithBGP() Option {
+	return func(c *collector) {
+		c.collectors = append(c.collectors, &bgpCollector{})
+	}
+}

+// WithRoutes enables routing table metrics
+func WithRoutes() Option {
+	return func(c *collector) {
+		c.collectors = append(c.collectors, &routesCollector{})
+	}
+}
+
+// WithTimeout sets timeout for connecting to router
+func WithTimeout(d time.Duration) Option {
+	return func(c *collector) {
+		c.timeout = d
+	}
+}
+
+// WithTLS enables TLS
+func WithTLS(insecure bool) Option {
+	return func(c *collector) {
+		c.enableTLS = true
+		c.insecureTLS = true
+	}
+}
+
+// Option applies options to collector
+type Option func(*collector)
+
+// NewCollector creates a collector instance
+func NewCollector(cfg *config.Config, opts ...Option) (prometheus.Collector, error) {
 	log.WithFields(log.Fields{
 		"numDevices": len(cfg.Devices),
 	}).Info("setting up collector for devices")

-	copy(devices, cfg.Devices)
+	c := &collector{
+		devices: cfg.Devices,
+		timeout: DefaultTimeout,
+		collectors: []metricCollector{
+			&interfaceCollector{},
+			&resourceCollector{},
+		},
+	}

-	return &deviceCollector{Devices: devices}, nil
+	for _, o := range opts {
+		o(c)
+	}
+
+	return c, nil
 }

 // Describe implements the prometheus.Collector interface.
-func (d deviceCollector) Describe(ch chan<- *prometheus.Desc) {
+func (c *collector) Describe(ch chan<- *prometheus.Desc) {
 	ch <- scrapeDurationDesc
 	ch <- scrapeSuccessDesc
+
+	for _, co := range c.collectors {
+		co.describe(ch)
+	}
 }

 // Collect implements the prometheus.Collector interface.
-func (d deviceCollector) Collect(ch chan<- prometheus.Metric) {
+func (c *collector) Collect(ch chan<- prometheus.Metric) {
 	wg := sync.WaitGroup{}
-	wg.Add(len(d.Devices))
-	for _, device := range d.Devices {
-		go func(d Device) {
-			execute(d, ch)
+	wg.Add(len(c.devices))
+
+	for _, dev := range c.devices {
+		go func(d config.Device) {
+			c.collectForDevice(d, ch)
 			wg.Done()
-		}(device)
+		}(dev)
 	}
+
 	wg.Wait()
 }

-func execute(d Device, ch chan<- prometheus.Metric) {
+func (c *collector) collectForDevice(d config.Device, ch chan<- prometheus.Metric) {
 	begin := time.Now()
-	err := d.Update(ch)
+
+	err := c.connectAndCollect(&d, ch)
+
 	duration := time.Since(begin)
 	var success float64
-
 	if err != nil {
-		log.Errorf("ERROR: %s collector failed after %fs: %s", d.name, duration.Seconds(), err)
+		log.Errorf("ERROR: %s collector failed after %fs: %s", d.Name, duration.Seconds(), err)
 		success = 0
 	} else {
-		log.Debugf("OK: %s collector succeeded after %fs.", d.name, duration.Seconds())
+		log.Debugf("OK: %s collector succeeded after %fs.", d.Name, duration.Seconds())
 		success = 1
 	}
-	ch <- prometheus.MustNewConstMetric(scrapeDurationDesc, prometheus.GaugeValue, duration.Seconds(), d.name)
-	ch <- prometheus.MustNewConstMetric(scrapeSuccessDesc, prometheus.GaugeValue, success, d.name)
+
+	ch <- prometheus.MustNewConstMetric(scrapeDurationDesc, prometheus.GaugeValue, duration.Seconds(), d.Name)
+	ch <- prometheus.MustNewConstMetric(scrapeSuccessDesc, prometheus.GaugeValue, success, d.Name)
+}
+
+func (c *collector) connectAndCollect(d *config.Device, ch chan<- prometheus.Metric) error {
+	cl, err := c.connect(d)
+	if err != nil {
+		log.WithFields(log.Fields{
+			"device": d.Name,
+			"error":  err,
+		}).Error("error dialing device")
+		return err
+	}
+	defer cl.Close()
+
+	for _, co := range c.collectors {
+		err = co.collect(ch, d, cl)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (c *collector) connect(d *config.Device) (*routeros.Client, error) {
+	if !c.enableTLS {
+		return routeros.DialTimeout(d.Address+apiPort, d.User, d.Password, c.timeout)
+	}
+
+	tls := &tls.Config{
+		InsecureSkipVerify: c.insecureTLS,
+	}
+	return routeros.DialTLSTimeout(d.Address+apiPortTLS, d.User, d.Password, tls, c.timeout)
 }
--- a/collector/config.go
+++ b/collector/config.go
@ -1,33 +0,0 @@
-package collector
-
-import (
-	"fmt"
-
-	"github.com/prometheus/client_golang/prometheus"
-)
-
-type Config struct {
-	Devices []Device
-}
-
-func (c *Config) FromFlags(device, address, user, password *string) error {
-	if *device == "" || *address == "" || *user == "" || *password == "" {
-		return fmt.Errorf("missing required param for single device configuration")
-	}
-
-	d := &Device{
-		address:  *address,
-		name:     *device,
-		user:     *user,
-		password: *password,
-		iDesc:    map[string]*prometheus.Desc{},
-		rDesc:    map[string]*prometheus.Desc{},
-	}
-
-	*c = Config{
-		Devices: []Device{*d},
-	}
-
-	return nil
-
-}
--- a/collector/device.go
+++ b/collector/device.go
@ -1,108 +0,0 @@
-package collector
-
-import (
-	"strings"
-
-	"fmt"
-
-	"strconv"
-
-	"github.com/prometheus/client_golang/prometheus"
-	log "github.com/sirupsen/logrus"
-	"gopkg.in/routeros.v2"
-	"gopkg.in/routeros.v2/proto"
-)
-
-const (
-	apiPort = ":8728"
-)
-
-var (
-	interfaceLabelNames = []string{"name", "address", "interface"}
-	InterfaceProps      = []string{"name", "rx-byte", "tx-byte", "rx-packet", "tx-packet", "rx-error", "tx-error", "rx-drop", "tx-drop"}
-	resourceLabelNames  = []string{"name", "address"}
-	ResourceProps       = []string{"free-memory", "total-memory", "cpu-load", "free-hdd-space", "total-hdd-space"}
-)
-
-type Device struct {
-	address  string
-	name     string
-	user     string
-	password string
-	iDesc    map[string]*prometheus.Desc // interface level descriptions for device
-	rDesc    map[string]*prometheus.Desc // resource level descriptions for device
-}
-
-func metricStringCleanup(in string) string {
-	return strings.Replace(in, "-", "_", -1)
-}
-
-func (d *Device) fetchInterfaceMetrics() ([]*proto.Sentence, error) {
-
-	log.WithFields(log.Fields{
-		"device": d.name,
-	}).Debug("fetching interface metrics")
-
-	// grab a connection to the device
-	c, err := routeros.Dial(d.address+apiPort, d.user, d.password)
-	if err != nil {
-		log.WithFields(log.Fields{
-			"device": d.name,
-			"error":  err,
-		}).Error("error dialing device")
-		return nil, err
-	}
-	defer c.Close()
-
-	reply, err := c.Run("/interface/print", "?disabled=false",
-		"?running=true", "=.proplist="+strings.Join(InterfaceProps, ","))
-	if err != nil {
-		log.WithFields(log.Fields{
-			"device": d.name,
-			"error":  err,
-		}).Error("error fetching interface metrics")
-		return nil, err
-	}
-
-	return reply.Re, nil
-}
-
-func (d *Device) Update(ch chan<- prometheus.Metric) error {
-
-	stats, err := d.fetchInterfaceMetrics()
-	// if there is no error, deal with the response
-	if err == nil {
-		for _, re := range stats {
-			var intf string
-			for _, p := range InterfaceProps {
-				if p == "name" {
-					intf = re.Map[p]
-				} else {
-					desc, ok := d.iDesc[p]
-					if !ok {
-						desc = prometheus.NewDesc(
-							prometheus.BuildFQName(namespace, "interface", metricStringCleanup(p)),
-							fmt.Sprintf("interface property statistic %s", p),
-							interfaceLabelNames,
-							nil,
-						)
-						d.iDesc[p] = desc
-					}
-					v, err := strconv.ParseFloat(re.Map[p], 64)
-					if err == nil {
-						ch <- prometheus.MustNewConstMetric(desc, prometheus.CounterValue, v, d.name, d.address, intf)
-					} else {
-						log.WithFields(log.Fields{
-							"device":    d.name,
-							"interface": intf,
-							"property":  p,
-							"value":     re.Map[p],
-							"error":     err,
-						}).Error("error parsing interface metric value")
-					}
-				}
-			}
-		}
-	}
-	return nil
-}
--- a/collector/helper.go
+++ b/collector/helper.go
@ -0,0 +1,20 @@
+package collector
+
+import (
+	"strings"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+func metricStringCleanup(in string) string {
+	return strings.Replace(in, "-", "_", -1)
+}
+
+func descriptionForPropertyName(prefix, property string, labelNames []string) *prometheus.Desc {
+	return prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, prefix, metricStringCleanup(property)),
+		property,
+		labelNames,
+		nil,
+	)
+}
--- a/collector/interface_collector.go
+++ b/collector/interface_collector.go
@ -0,0 +1,89 @@
+package collector
+
+import (
+	"strconv"
+	"strings"
+
+	"github.com/nshttpd/mikrotik-exporter/config"
+	"github.com/prometheus/client_golang/prometheus"
+	log "github.com/sirupsen/logrus"
+	"gopkg.in/routeros.v2"
+	"gopkg.in/routeros.v2/proto"
+)
+
+var (
+	interfaceLabelNames   = []string{"name", "address", "interface"}
+	interfaceProps        = []string{"name", "rx-byte", "tx-byte", "rx-packet", "tx-packet", "rx-error", "tx-error", "rx-drop", "tx-drop"}
+	interfaceDescriptions map[string]*prometheus.Desc
+)
+
+func init() {
+	interfaceDescriptions = make(map[string]*prometheus.Desc)
+	for _, p := range interfaceProps[1:] {
+		interfaceDescriptions[p] = descriptionForPropertyName("interface", p, interfaceLabelNames)
+	}
+}
+
+type interfaceCollector struct {
+}
+
+func (c *interfaceCollector) describe(ch chan<- *prometheus.Desc) {
+	for _, d := range interfaceDescriptions {
+		ch <- d
+	}
+}
+
+func (c *interfaceCollector) collect(ch chan<- prometheus.Metric, device *config.Device, client *routeros.Client) error {
+	stats, err := c.fetch(client, device)
+	if err != nil {
+		return err
+	}
+
+	for _, re := range stats {
+		c.collectForStat(re, device, ch)
+	}
+
+	return nil
+}
+
+func (c *interfaceCollector) fetch(client *routeros.Client, device *config.Device) ([]*proto.Sentence, error) {
+	reply, err := client.Run("/interface/print", "?disabled=false",
+		"?running=true", "=.proplist="+strings.Join(interfaceProps, ","))
+	if err != nil {
+		log.WithFields(log.Fields{
+			"device": device.Name,
+			"error":  err,
+		}).Error("error fetching interface metrics")
+		return nil, err
+	}
+
+	return reply.Re, nil
+}
+
+func (c *interfaceCollector) collectForStat(re *proto.Sentence, device *config.Device, ch chan<- prometheus.Metric) {
+	var iface string
+	for _, p := range interfaceProps {
+		if p == "name" {
+			iface = re.Map[p]
+		} else {
+			c.collectMetricForProperty(p, iface, device, re, ch)
+		}
+	}
+}
+
+func (c *interfaceCollector) collectMetricForProperty(property, iface string, device *config.Device, re *proto.Sentence, ch chan<- prometheus.Metric) {
+	desc := interfaceDescriptions[property]
+	v, err := strconv.ParseFloat(re.Map[property], 64)
+	if err != nil {
+		log.WithFields(log.Fields{
+			"device":    device.Name,
+			"interface": iface,
+			"property":  property,
+			"value":     re.Map[property],
+			"error":     err,
+		}).Error("error parsing interface metric value")
+		return
+	}
+
+	ch <- prometheus.MustNewConstMetric(desc, prometheus.CounterValue, v, device.Name, device.Address, iface)
+}
--- a/collector/metric_collector.go
+++ b/collector/metric_collector.go
@ -0,0 +1,12 @@
+package collector
+
+import (
+	"github.com/nshttpd/mikrotik-exporter/config"
+	"github.com/prometheus/client_golang/prometheus"
+	routeros "gopkg.in/routeros.v2"
+)
+
+type metricCollector interface {
+	describe(ch chan<- *prometheus.Desc)
+	collect(ch chan<- prometheus.Metric, device *config.Device, client *routeros.Client) error
+}
--- a/collector/prometheus.bak
+++ b/collector/prometheus.bak
@ -1,86 +0,0 @@
-package collector
-
-import (
-	"fmt"
-	"net/http"
-
-	"github.com/prometheus/client_golang/prometheus"
-	"github.com/prometheus/client_golang/prometheus/promhttp"
-)
-
-type PromMetrics struct {
-	InterfaceMetrics map[string]*prometheus.CounterVec
-	ResourceMetrics  map[string]*prometheus.GaugeVec
-}
-
-func (p *PromMetrics) makeLabels(name, address string) prometheus.Labels {
-	labels := make(prometheus.Labels)
-	labels["name"] = metricStringCleanup(name)
-	labels["address"] = metricStringCleanup(address)
-	return labels
-}
-
-func (p *PromMetrics) makeInterfaceLabels(name, address, intf string) prometheus.Labels {
-	l := p.makeLabels(name, address)
-	l["interface"] = intf
-	return l
-}
-
-func (p *PromMetrics) SetupPrometheus() (http.Handler, error) {
-
-	p.InterfaceMetrics = make(map[string]*prometheus.CounterVec)
-	p.ResourceMetrics = make(map[string]*prometheus.GaugeVec)
-
-	for _, v := range InterfaceProps {
-		n := metricStringCleanup(v)
-		c := prometheus.NewCounterVec(prometheus.CounterOpts{
-			Namespace: namespace,
-			Subsystem: "interface",
-			Name:      n,
-			Help:      fmt.Sprintf("Interface %s counter", v),
-		}, interfaceLabelNames)
-
-		if err := prometheus.Register(c); err != nil {
-			//l.Errorw("error creating interface counter vector",
-			//	"property", v,
-			//	"error", err,
-			//)
-			return nil, err
-		}
-
-		p.InterfaceMetrics[v] = c
-
-	}
-
-	for _, v := range ResourceProps {
-		n := metricStringCleanup(v)
-		c := prometheus.NewGaugeVec(prometheus.GaugeOpts{
-			Namespace: namespace,
-			Subsystem: "resource",
-			Name:      n,
-			Help:      fmt.Sprintf("Resource %s counter", v),
-		}, resourceLabelNames)
-
-		if err := prometheus.Register(c); err != nil {
-			//l.Errorw("error creating resource counter vec",
-			//	"property", v,
-			//	"error", err,
-			//)
-			return nil, err
-		}
-		p.ResourceMetrics[v] = c
-	}
-
-	return promhttp.Handler(), nil
-
-}
-
-func (p *PromMetrics) IncrementInterface(prop, name, address, intf string, cnt float64) {
-	l := p.makeInterfaceLabels(name, address, intf)
-	p.InterfaceMetrics[prop].With(l).Add(cnt)
-}
-
-func (p *PromMetrics) UpdateResource(res, name, address string, v float64) {
-	l := p.makeLabels(name, address)
-	p.ResourceMetrics[res].With(l).Set(v)
-}
--- a/collector/resource_collector.go
+++ b/collector/resource_collector.go
@ -0,0 +1,82 @@
+package collector
+
+import (
+	"strconv"
+	"strings"
+
+	"github.com/nshttpd/mikrotik-exporter/config"
+	"github.com/prometheus/client_golang/prometheus"
+	log "github.com/sirupsen/logrus"
+	"gopkg.in/routeros.v2"
+	"gopkg.in/routeros.v2/proto"
+)
+
+var (
+	resourceLabelNames   = []string{"name", "address"}
+	resourceProps        = []string{"free-memory", "total-memory", "cpu-load", "free-hdd-space", "total-hdd-space"}
+	resourceDescriptions map[string]*prometheus.Desc
+)
+
+func init() {
+	resourceDescriptions = make(map[string]*prometheus.Desc)
+	for _, p := range resourceProps {
+		resourceDescriptions[p] = descriptionForPropertyName("system", p, resourceLabelNames)
+	}
+}
+
+type resourceCollector struct {
+}
+
+func (c *resourceCollector) describe(ch chan<- *prometheus.Desc) {
+	for _, d := range resourceDescriptions {
+		ch <- d
+	}
+}
+
+func (c *resourceCollector) collect(ch chan<- prometheus.Metric, device *config.Device, client *routeros.Client) error {
+	stats, err := c.fetch(client, device)
+	if err != nil {
+		return err
+	}
+
+	for _, re := range stats {
+		c.collectForStat(re, device, ch)
+	}
+
+	return nil
+}
+
+func (c *resourceCollector) fetch(client *routeros.Client, device *config.Device) ([]*proto.Sentence, error) {
+	reply, err := client.Run("/system/resource/print", "=.proplist="+strings.Join(resourceProps, ","))
+	if err != nil {
+		log.WithFields(log.Fields{
+			"device": device.Name,
+			"error":  err,
+		}).Error("error fetching system resource metrics")
+		return nil, err
+	}
+
+	return reply.Re, nil
+}
+
+func (c *resourceCollector) collectForStat(re *proto.Sentence, device *config.Device, ch chan<- prometheus.Metric) {
+	for _, p := range resourceProps {
+		c.collectMetricForProperty(p, device, re, ch)
+	}
+}
+
+func (c *resourceCollector) collectMetricForProperty(property string, device *config.Device, re *proto.Sentence, ch chan<- prometheus.Metric) {
+	v, err := strconv.ParseFloat(re.Map[property], 64)
+	if err != nil {
+		log.WithFields(log.Fields{
+			"device":   device.Name,
+			"property": property,
+			"value":    re.Map[property],
+			"error":    err,
+		}).Error("error parsing system resource metric value")
+		return
+	}
+
+	desc := resourceDescriptions[property]
+	ch <- prometheus.MustNewConstMetric(desc, prometheus.CounterValue, v, device.Name, device.Address)
+}
--- a/collector/routes_collector.go
+++ b/collector/routes_collector.go
@ -0,0 +1,110 @@
+package collector
+
+import (
+	"fmt"
+	"strconv"
+
+	"github.com/nshttpd/mikrotik-exporter/config"
+	"github.com/prometheus/client_golang/prometheus"
+	log "github.com/sirupsen/logrus"
+	"gopkg.in/routeros.v2"
+)
+
+const routesPrefiix = "routes"
+
+var (
+	routesProtocols = []string{"bgp", "static", "ospf", "dynamic", "connect"}
+)
+
+var (
+	routesTotalDesc    *prometheus.Desc
+	routesProtocolDesc *prometheus.Desc
+)
+
+func init() {
+	l := []string{"name", "address", "ip_version"}
+	routesTotalDesc = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, routesPrefiix, "total_count"),
+		"number of routes in RIB",
+		l,
+		nil,
+	)
+	routesProtocolDesc = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, routesPrefiix, "protocol_count"),
+		"number of routes per protocol in RIB",
+		append(l, "protocol"),
+		nil,
+	)
+}
+
+type routesCollector struct {
+}
+
+func (c *routesCollector) describe(ch chan<- *prometheus.Desc) {
+	ch <- routesTotalDesc
+	ch <- routesProtocolDesc
+}
+
+func (c *routesCollector) collect(ch chan<- prometheus.Metric, device *config.Device, client *routeros.Client) error {
+	c.colllectForIPVersion(client, device, ch, "4", "ip")
+	c.colllectForIPVersion(client, device, ch, "6", "ipv6")
+	return nil
+}
+
+func (c *routesCollector) colllectForIPVersion(client *routeros.Client, device *config.Device, ch chan<- prometheus.Metric, ipVersion, topic string) {
+	c.colllectCount(client, device, ch, ipVersion, topic)
+
+	for _, p := range routesProtocols {
+		c.colllectCountProtcol(client, device, ch, ipVersion, topic, p)
+	}
+}
+
+func (c *routesCollector) colllectCount(client *routeros.Client, device *config.Device, ch chan<- prometheus.Metric, ipVersion, topic string) {
+	reply, err := client.Run(fmt.Sprintf("/%s/route/print", topic), "?disabled=false", "=count-only=")
+	if err != nil {
+		log.WithFields(log.Fields{
+			"ip_version": ipVersion,
+			"device":     device.Name,
+			"error":      err,
+		}).Error("error fetching routes metrics")
+		return
+	}
+
+	v, err := strconv.ParseFloat(reply.Done.Map["ret"], 32)
+	if err != nil {
+		log.WithFields(log.Fields{
+			"ip_version": ipVersion,
+			"device":     device.Name,
+			"error":      err,
+		}).Error("error parsing routes metrics")
+		return
+	}
+
+	ch <- prometheus.MustNewConstMetric(routesTotalDesc, prometheus.GaugeValue, v, device.Name, device.Address, ipVersion)
+}
+
+func (c *routesCollector) colllectCountProtcol(client *routeros.Client, device *config.Device, ch chan<- prometheus.Metric, ipVersion, topic, protocol string) {
+	reply, err := client.Run(fmt.Sprintf("/%s/route/print", topic), "?disabled=false", fmt.Sprintf("?%s", protocol), "=count-only=")
+	if err != nil {
+		log.WithFields(log.Fields{
+			"ip_version": ipVersion,
+			"protocol":   protocol,
+			"device":     device.Name,
+			"error":      err,
+		}).Error("error fetching routes metrics")
+		return
+	}
+
+	v, err := strconv.ParseFloat(reply.Done.Map["ret"], 32)
+	if err != nil {
+		log.WithFields(log.Fields{
+			"ip_version": ipVersion,
+			"protocol":   protocol,
+			"device":     device.Name,
+			"error":      err,
+		}).Error("error parsing routes metrics")
+		return
+	}
+
+	ch <- prometheus.MustNewConstMetric(routesProtocolDesc, prometheus.GaugeValue, v, device.Name, device.Address, ipVersion, protocol)
+}
--- a/config/config.go
+++ b/config/config.go
@ -0,0 +1,34 @@
+package config
+
+import (
+	"io"
+	"io/ioutil"
+
+	yaml "gopkg.in/yaml.v2"
+)
+
+type Config struct {
+	Devices []Device `yaml:"devices"`
+}
+
+type Device struct {
+	Name     string `yaml:"name"`
+	Address  string `yaml:"address"`
+	User     string `yaml:"user"`
+	Password string `yaml:"password"`
+}
+
+func Load(r io.Reader) (*Config, error) {
+	b, err := ioutil.ReadAll(r)
+	if err != nil {
+		return nil, err
+	}
+
+	c := &Config{}
+	err = yaml.Unmarshal(b, c)
+	if err != nil {
+		return nil, err
+	}
+
+	return c, nil
+}
--- a/config/config_test.go
+++ b/config/config_test.go
@ -0,0 +1,49 @@
+package config
+
+import (
+	"bytes"
+	"io/ioutil"
+	"testing"
+)
+
+func TestShouldParse(t *testing.T) {
+	b := loadTestFile(t)
+	c, err := Load(bytes.NewReader(b))
+	if err != nil {
+		t.Fatalf("could not parse: %v", err)
+	}
+
+	if len(c.Devices) != 2 {
+		t.Fatalf("expected 2 devices, got %v", len(c.Devices))
+	}
+
+	assertConfig("test1", "192.168.1.1", "foo", "bar", c.Devices[0], t)
+	assertConfig("test2", "192.168.2.1", "test", "123", c.Devices[1], t)
+}
+
+func loadTestFile(t *testing.T) []byte {
+	b, err := ioutil.ReadFile("test/config.test.yml")
+	if err != nil {
+		t.Fatalf("could not load config: %v", err)
+	}
+
+	return b
+}
+
+func assertConfig(name, address, user, password string, c Device, t *testing.T) {
+	if c.Name != name {
+		t.Fatalf("expected name %s, got %s", name, c.Name)
+	}
+
+	if c.Address != address {
+		t.Fatalf("expected address %s, got %s", address, c.Address)
+	}
+
+	if c.User != user {
+		t.Fatalf("expected user %s, got %s", user, c.User)
+	}
+
+	if c.Password != password {
+		t.Fatalf("expected password %s, got %s", password, c.Password)
+	}
+}
--- a/config/test/config.test.yml
+++ b/config/test/config.test.yml
@ -0,0 +1,11 @@
+---
+
+devices:
+  - name: test1
+    address: 192.168.1.1
+    user: foo
+    password: bar
+  - name: test2
+    address: 192.168.2.1
+    user: test
+    password: 123
--- a/main.go
+++ b/main.go
@ -1,13 +1,17 @@
 package main

 import (
+	"bytes"
 	"flag"
+	"io/ioutil"
 	"os"
+	"time"

 	"fmt"
 	"net/http"

 	"github.com/nshttpd/mikrotik-exporter/collector"
+	"github.com/nshttpd/mikrotik-exporter/config"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	"github.com/prometheus/common/version"
@ -20,20 +24,105 @@ var (
 	address     = flag.String("address", "", "address of the device to monitor")
 	user        = flag.String("user", "", "user for authentication with single device")
 	password    = flag.String("password", "", "password for authentication for single device")
-	cfgFile     = flag.String("config", "", "config file for multiple devices")
 	logLevel    = flag.String("log-level", "info", "log level")
 	logFormat   = flag.String("log-format", "json", "logformat text or json (default json)")
 	port        = flag.String("port", ":9090", "port number to listen on")
 	metricsPath = flag.String("path", "/metrics", "path to answer requests on")
-	cfg         collector.Config
+	configFile  = flag.String("config-file", "", "config file to load")
+	withBgp     = flag.Bool("with-bgp", false, "retrieves BGP routing infrormation")
+	withRoutes  = flag.Bool("with-routes", false, "retrieves routing table information")
+	timeout     = flag.Duration("timeout", collector.DefaultTimeout*time.Second, "timeout when connecting to routers")
+	tls         = flag.Bool("tls", false, "use tls to connect to routers")
+	insecure    = flag.Bool("insecure", false, "skips verification of server certificate when using TLS (not recommended)")
+	cfg         *config.Config
 )

 func init() {
 	prometheus.MustRegister(version.NewCollector("mikrotik_exporter"))
 }

+func main() {
+	flag.Parse()
+
+	configureLog()
+
+	c, err := loadConfig()
+	if err != nil {
+		log.Errorf("Could not load config: %v", err)
+		os.Exit(3)
+	}
+	cfg = c
+
+	startServer()
+}
+
+func configureLog() {
+	ll, err := log.ParseLevel(*logLevel)
+	if err != nil {
+		panic(err)
+	}
+
+	log.SetLevel(ll)
+}
+
+func loadConfig() (*config.Config, error) {
+	if *configFile != "" {
+		return loadConfigFromFile()
+	}
+
+	return loadConfigFromFlags()
+}
+
+func loadConfigFromFile() (*config.Config, error) {
+	b, err := ioutil.ReadFile(*configFile)
+	if err != nil {
+		return nil, err
+	}
+
+	return config.Load(bytes.NewReader(b))
+}
+
+func loadConfigFromFlags() (*config.Config, error) {
+	if *device == "" || *address == "" || *user == "" || *password == "" {
+		return nil, fmt.Errorf("missing required param for single device configuration")
+	}
+
+	return &config.Config{
+		Devices: []config.Device{
+			config.Device{
+				Name:     *device,
+				Address:  *address,
+				User:     *user,
+				Password: *password,
+			},
+		},
+	}, nil
+}
+
+func startServer() {
+	http.HandleFunc(*metricsPath, prometheus.InstrumentHandlerFunc("prometheus", handler))
+
+	http.HandleFunc("/healthz", func(w http.ResponseWriter, r *http.Request) {
+		w.Write([]byte("ok"))
+	})
+
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		w.Write([]byte(`<html>
+			<head><title>Mikrotik Exporter</title></head>
+			<body>
+			<h1>Mikrotik Exporter</h1>
+			<p><a href="` + *metricsPath + `">Metrics</a></p>
+			</body>
+			</html>`))
+	})
+
+	log.Info("Listening on", *port)
+	log.Fatal(http.ListenAndServe(*port, nil))
+}
+
 func handler(w http.ResponseWriter, r *http.Request) {
-	nc, err := collector.NewDeviceCollector(cfg)
+	opts := collectorOptions()
+	nc, err := collector.NewCollector(cfg, opts...)
 	if err != nil {
 		log.Warnln("Couldn't create", err)
 		w.WriteHeader(http.StatusBadRequest)
@ -50,12 +139,8 @@ func handler(w http.ResponseWriter, r *http.Request) {
 		return
 	}

-	gatherers := prometheus.Gatherers{
-		prometheus.DefaultGatherer,
-		registry,
-	}
 	// Delegate http serving to Prometheus client library, which will call collector.Collect.
-	h := promhttp.HandlerFor(gatherers,
+	h := promhttp.HandlerFor(registry,
 		promhttp.HandlerOpts{
 			ErrorLog:      log.New(),
 			ErrorHandling: promhttp.ContinueOnError,
@ -63,51 +148,24 @@ func handler(w http.ResponseWriter, r *http.Request) {
 	h.ServeHTTP(w, r)
 }

-func main() {
-	flag.Parse()
+func collectorOptions() []collector.Option {
+	opts := []collector.Option{}

-	// override default log level of info
-	var ll log.Level
-	var err error
-	ll = log.InfoLevel
-	if *logLevel != "info" {
-		ll, err = log.ParseLevel(*logLevel)
-		if err != nil {
-			panic(err)
-		}
-	}
-	log.SetLevel(ll)
-
-	if *cfgFile == "" {
-		if err := cfg.FromFlags(device, address, user, password); err != nil {
-			log.WithFields(log.Fields{
-				"error": err,
-			}).Error("could not create configuration")
-			os.Exit(1)
-		}
-	} else {
-		log.Info("config file not supported yet")
-		os.Exit(0)
+	if *withBgp {
+		opts = append(opts, collector.WithBGP())
 	}

-	http.HandleFunc(*metricsPath, prometheus.InstrumentHandlerFunc("prometheus", handler))
-	http.HandleFunc("/healthz", func(w http.ResponseWriter, r *http.Request) {
-		w.Write([]byte("ok"))
-	})
-	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
-		w.Write([]byte(`<html>
-			<head><title>Mikrotik Exporter</title></head>
-			<body>
-			<h1>Mikrotik Exporter</h1>
-			<p><a href="` + *metricsPath + `">Metrics</a></p>
-			</body>
-			</html>`))
-	})
-
-	log.Info("Listening on", *port)
-	err = http.ListenAndServe(*port, nil)
-	if err != nil {
-		log.Fatal(err)
+	if *withRoutes {
+		opts = append(opts, collector.WithRoutes())
 	}

+	if *timeout != collector.DefaultTimeout {
+		opts = append(opts, collector.WithTimeout(*timeout))
+	}
+
+	if *tls {
+		opts = append(opts, collector.WithTLS(*insecure))
+	}
+
+	return opts
 }
--- a/vendor/github.com/beorn7/perks/.gitignore
+++ b/vendor/github.com/beorn7/perks/.gitignore
@ -0,0 +1,2 @@
+*.test
+*.prof
--- a/vendor/github.com/golang/protobuf/.gitignore
+++ b/vendor/github.com/golang/protobuf/.gitignore
@ -0,0 +1,16 @@
+.DS_Store
+*.[568ao]
+*.ao
+*.so
+*.pyc
+._*
+.nfs.*
+[568a].out
+*~
+*.orig
+core
+_obj
+_test
+_testmain.go
+protoc-gen-go/testdata/multi/*.pb.go
+_conformance/_conformance
--- a/vendor/github.com/golang/protobuf/jsonpb/jsonpb.go
+++ b/vendor/github.com/golang/protobuf/jsonpb/jsonpb.go
@ -193,7 +193,8 @@ func (m *Marshaler) marshalObject(out *errWriter, v proto.Message, indent, typeU
 			// "Generated output always contains 3, 6, or 9 fractional digits,
 			//  depending on required precision."
 			s, ns := s.Field(0).Int(), s.Field(1).Int()
-			x := fmt.Sprintf("%d.%09d", s, ns)
+			d := time.Duration(s)*time.Second + time.Duration(ns)*time.Nanosecond
+			x := fmt.Sprintf("%.9f", d.Seconds())
 			x = strings.TrimSuffix(x, "000")
 			x = strings.TrimSuffix(x, "000")
 			out.write(`"`)
--- a/vendor/github.com/golang/protobuf/jsonpb/jsonpb_test.go
+++ b/vendor/github.com/golang/protobuf/jsonpb/jsonpb_test.go
@ -407,7 +407,6 @@ var marshalingTests = []struct {
 	{"Any with WKT", marshaler, anyWellKnown, anyWellKnownJSON},
 	{"Any with WKT and indent", marshalerAllOptions, anyWellKnown, anyWellKnownPrettyJSON},
 	{"Duration", marshaler, &pb.KnownTypes{Dur: &durpb.Duration{Seconds: 3}}, `{"dur":"3.000s"}`},
-	{"Duration", marshaler, &pb.KnownTypes{Dur: &durpb.Duration{Seconds: 100000000, Nanos: 1}}, `{"dur":"100000000.000000001s"}`},
 	{"Struct", marshaler, &pb.KnownTypes{St: &stpb.Struct{
 		Fields: map[string]*stpb.Value{
 			"one": {Kind: &stpb.Value_StringValue{"loneliest number"}},
--- a/vendor/github.com/golang/protobuf/proto/discard.go
+++ b/vendor/github.com/golang/protobuf/proto/discard.go
@ -0,0 +1,151 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2017 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto
+
+import (
+	"fmt"
+	"reflect"
+	"strings"
+)
+
+// DiscardUnknown recursively discards all unknown fields from this message
+// and all embedded messages.
+//
+// When unmarshaling a message with unrecognized fields, the tags and values
+// of such fields are preserved in the Message. This allows a later call to
+// marshal to be able to produce a message that continues to have those
+// unrecognized fields. To avoid this, DiscardUnknown is used to
+// explicitly clear the unknown fields after unmarshaling.
+//
+// For proto2 messages, the unknown fields of message extensions are only
+// discarded from messages that have been accessed via GetExtension.
+func DiscardUnknown(m Message) {
+	discardLegacy(m)
+}
+
+func discardLegacy(m Message) {
+	v := reflect.ValueOf(m)
+	if v.Kind() != reflect.Ptr || v.IsNil() {
+		return
+	}
+	v = v.Elem()
+	if v.Kind() != reflect.Struct {
+		return
+	}
+	t := v.Type()
+
+	for i := 0; i < v.NumField(); i++ {
+		f := t.Field(i)
+		if strings.HasPrefix(f.Name, "XXX_") {
+			continue
+		}
+		vf := v.Field(i)
+		tf := f.Type
+
+		// Unwrap tf to get its most basic type.
+		var isPointer, isSlice bool
+		if tf.Kind() == reflect.Slice && tf.Elem().Kind() != reflect.Uint8 {
+			isSlice = true
+			tf = tf.Elem()
+		}
+		if tf.Kind() == reflect.Ptr {
+			isPointer = true
+			tf = tf.Elem()
+		}
+		if isPointer && isSlice && tf.Kind() != reflect.Struct {
+			panic(fmt.Sprintf("%T.%s cannot be a slice of pointers to primitive types", m, f.Name))
+		}
+
+		switch tf.Kind() {
+		case reflect.Struct:
+			switch {
+			case !isPointer:
+				panic(fmt.Sprintf("%T.%s cannot be a direct struct value", m, f.Name))
+			case isSlice: // E.g., []*pb.T
+				for j := 0; j < vf.Len(); j++ {
+					discardLegacy(vf.Index(j).Interface().(Message))
+				}
+			default: // E.g., *pb.T
+				discardLegacy(vf.Interface().(Message))
+			}
+		case reflect.Map:
+			switch {
+			case isPointer || isSlice:
+				panic(fmt.Sprintf("%T.%s cannot be a pointer to a map or a slice of map values", m, f.Name))
+			default: // E.g., map[K]V
+				tv := vf.Type().Elem()
+				if tv.Kind() == reflect.Ptr && tv.Implements(protoMessageType) { // Proto struct (e.g., *T)
+					for _, key := range vf.MapKeys() {
+						val := vf.MapIndex(key)
+						discardLegacy(val.Interface().(Message))
+					}
+				}
+			}
+		case reflect.Interface:
+			// Must be oneof field.
+			switch {
+			case isPointer || isSlice:
+				panic(fmt.Sprintf("%T.%s cannot be a pointer to a interface or a slice of interface values", m, f.Name))
+			default: // E.g., test_proto.isCommunique_Union interface
+				if !vf.IsNil() && f.Tag.Get("protobuf_oneof") != "" {
+					vf = vf.Elem() // E.g., *test_proto.Communique_Msg
+					if !vf.IsNil() {
+						vf = vf.Elem()   // E.g., test_proto.Communique_Msg
+						vf = vf.Field(0) // E.g., Proto struct (e.g., *T) or primitive value
+						if vf.Kind() == reflect.Ptr {
+							discardLegacy(vf.Interface().(Message))
+						}
+					}
+				}
+			}
+		}
+	}
+
+	if vf := v.FieldByName("XXX_unrecognized"); vf.IsValid() {
+		if vf.Type() != reflect.TypeOf([]byte{}) {
+			panic("expected XXX_unrecognized to be of type []byte")
+		}
+		vf.Set(reflect.ValueOf([]byte(nil)))
+	}
+
+	// For proto2 messages, only discard unknown fields in message extensions
+	// that have been accessed via GetExtension.
+	if em, ok := extendable(m); ok {
+		// Ignore lock since discardLegacy is not concurrency safe.
+		emm, _ := em.extensionsRead()
+		for _, mx := range emm {
+			if m, ok := mx.value.(Message); ok {
+				discardLegacy(m)
+			}
+		}
+	}
+}
--- a/vendor/github.com/prometheus/client_golang/.gitignore
+++ b/vendor/github.com/prometheus/client_golang/.gitignore
@ -0,0 +1,26 @@
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
+
+*~
+*#
+.build
--- a/vendor/github.com/prometheus/client_golang/prometheus/.gitignore
+++ b/vendor/github.com/prometheus/client_golang/prometheus/.gitignore
@ -0,0 +1 @@
+command-line-arguments.test
--- a/vendor/github.com/prometheus/client_model/.gitignore
+++ b/vendor/github.com/prometheus/client_model/.gitignore
@ -0,0 +1 @@
+target/
--- a/vendor/github.com/prometheus/client_model/ruby/.gitignore
+++ b/vendor/github.com/prometheus/client_model/ruby/.gitignore
@ -0,0 +1,5 @@
+*.gem
+.bundle
+Gemfile.lock
+pkg
+vendor/bundle
--- a/vendor/github.com/prometheus/common/config/http_config.go
+++ b/vendor/github.com/prometheus/common/config/http_config.go
@ -22,7 +22,7 @@ import (
 	"net/url"
 	"strings"

-	yaml "gopkg.in/yaml.v2"
+	"gopkg.in/yaml.v2"
 )

 // BasicAuth contains basic HTTP authentication credentials.
@ -79,7 +79,9 @@ type HTTPClientConfig struct {
 	XXX map[string]interface{} `yaml:",inline"`
 }

-func (c *HTTPClientConfig) validate() error {
+// Validate validates the HTTPClientConfig to check only one of BearerToken,
+// BasicAuth and BearerTokenFile is configured.
+func (c *HTTPClientConfig) Validate() error {
 	if len(c.BearerToken) > 0 && len(c.BearerTokenFile) > 0 {
 		return fmt.Errorf("at most one of bearer_token & bearer_token_file must be configured")
 	}
@ -96,9 +98,9 @@ func (c *HTTPClientConfig) UnmarshalYAML(unmarshal func(interface{}) error) erro
 	if err != nil {
 		return err
 	}
-	err = c.validate()
+	err = c.Validate()
 	if err != nil {
-		return c.validate()
+		return c.Validate()
 	}
 	return checkOverflow(c.XXX, "http_client_config")
 }
--- a/vendor/github.com/prometheus/common/config/http_config_test.go
+++ b/vendor/github.com/prometheus/common/config/http_config_test.go
@ -114,7 +114,7 @@ func TestValidateHTTPConfig(t *testing.T) {
 	if err != nil {
 		t.Errorf("Error loading HTTP client config: %v", err)
 	}
-	err = cfg.validate()
+	err = cfg.Validate()
 	if err != nil {
 		t.Fatalf("Error validating %s: %s", "testdata/http.conf.good.yml", err)
 	}
--- a/vendor/github.com/prometheus/common/expfmt/expfmt.go
+++ b/vendor/github.com/prometheus/common/expfmt/expfmt.go
@ -26,7 +26,7 @@ const (

 	// The Content-Type values for the different wire protocols.
 	FmtUnknown      Format = `<unknown>`
-	FmtText         Format = `text/plain; version=` + TextVersion
+	FmtText         Format = `text/plain; version=` + TextVersion + `; charset=utf-8`
 	FmtProtoDelim   Format = ProtoFmt + ` encoding=delimited`
 	FmtProtoText    Format = ProtoFmt + ` encoding=text`
 	FmtProtoCompact Format = ProtoFmt + ` encoding=compact-text`
--- a/vendor/github.com/prometheus/common/route/route.go
+++ b/vendor/github.com/prometheus/common/route/route.go
@ -19,11 +19,12 @@ func WithParam(ctx context.Context, p, v string) context.Context {
 	return context.WithValue(ctx, param(p), v)
 }

-// Router wraps httprouter.Router and adds support for prefixed sub-routers
-// and per-request context injections.
+// Router wraps httprouter.Router and adds support for prefixed sub-routers,
+// per-request context injections and instrumentation.
 type Router struct {
 	rtr    *httprouter.Router
 	prefix string
+	instrh func(handlerName string, handler http.HandlerFunc) http.HandlerFunc
 }

 // New returns a new Router.
@ -33,13 +34,18 @@ func New() *Router {
 	}
 }

+// WithInstrumentation returns a router with instrumentation support.
+func (r *Router) WithInstrumentation(instrh func(handlerName string, handler http.HandlerFunc) http.HandlerFunc) *Router {
+	return &Router{rtr: r.rtr, prefix: r.prefix, instrh: instrh}
+}
+
 // WithPrefix returns a router that prefixes all registered routes with prefix.
 func (r *Router) WithPrefix(prefix string) *Router {
-	return &Router{rtr: r.rtr, prefix: r.prefix + prefix}
+	return &Router{rtr: r.rtr, prefix: r.prefix + prefix, instrh: r.instrh}
 }

 // handle turns a HandlerFunc into an httprouter.Handle.
-func (r *Router) handle(h http.HandlerFunc) httprouter.Handle {
+func (r *Router) handle(handlerName string, h http.HandlerFunc) httprouter.Handle {
 	return func(w http.ResponseWriter, req *http.Request, params httprouter.Params) {
 		ctx, cancel := context.WithCancel(req.Context())
 		defer cancel()
@ -47,33 +53,36 @@ func (r *Router) handle(h http.HandlerFunc) httprouter.Handle {
 		for _, p := range params {
 			ctx = context.WithValue(ctx, param(p.Key), p.Value)
 		}
+		if r.instrh != nil {
+			h = r.instrh(handlerName, h)
+		}
 		h(w, req.WithContext(ctx))
 	}
 }

 // Get registers a new GET route.
 func (r *Router) Get(path string, h http.HandlerFunc) {
-	r.rtr.GET(r.prefix+path, r.handle(h))
+	r.rtr.GET(r.prefix+path, r.handle(path, h))
 }

 // Options registers a new OPTIONS route.
 func (r *Router) Options(path string, h http.HandlerFunc) {
-	r.rtr.OPTIONS(r.prefix+path, r.handle(h))
+	r.rtr.OPTIONS(r.prefix+path, r.handle(path, h))
 }

 // Del registers a new DELETE route.
 func (r *Router) Del(path string, h http.HandlerFunc) {
-	r.rtr.DELETE(r.prefix+path, r.handle(h))
+	r.rtr.DELETE(r.prefix+path, r.handle(path, h))
 }

 // Put registers a new PUT route.
 func (r *Router) Put(path string, h http.HandlerFunc) {
-	r.rtr.PUT(r.prefix+path, r.handle(h))
+	r.rtr.PUT(r.prefix+path, r.handle(path, h))
 }

 // Post registers a new POST route.
 func (r *Router) Post(path string, h http.HandlerFunc) {
-	r.rtr.POST(r.prefix+path, r.handle(h))
+	r.rtr.POST(r.prefix+path, r.handle(path, h))
 }

 // Redirect takes an absolute path and sends an internal HTTP redirect for it,
--- a/vendor/github.com/prometheus/common/route/route_test.go
+++ b/vendor/github.com/prometheus/common/route/route_test.go
@ -42,3 +42,35 @@ func TestContext(t *testing.T) {
 	}
 	router.ServeHTTP(nil, r)
 }
+
+func TestInstrumentation(t *testing.T) {
+	var got string
+	cases := []struct {
+		router *Router
+		want   string
+	}{
+		{
+			router: New(),
+			want:   "",
+		}, {
+			router: New().WithInstrumentation(func(handlerName string, handler http.HandlerFunc) http.HandlerFunc {
+				got = handlerName
+				return handler
+			}),
+			want: "/foo",
+		},
+	}
+
+	for _, c := range cases {
+		c.router.Get("/foo", func(w http.ResponseWriter, r *http.Request) {})
+
+		r, err := http.NewRequest("GET", "http://localhost:9090/foo", nil)
+		if err != nil {
+			t.Fatalf("Error building test request: %s", err)
+		}
+		c.router.ServeHTTP(nil, r)
+		if c.want != got {
+			t.Fatalf("Unexpected value: want %q, got %q", c.want, got)
+		}
+	}
+}
--- a/vendor/github.com/prometheus/procfs/.gitignore
+++ b/vendor/github.com/prometheus/procfs/.gitignore
@ -0,0 +1 @@
+/fixtures/
--- a/vendor/github.com/prometheus/procfs/.travis.yml
+++ b/vendor/github.com/prometheus/procfs/.travis.yml
@ -1,5 +1,15 @@
 sudo: false
+
 language: go
+
 go:
-    - 1.7.6
-    - 1.8.3
+- 1.7.x
+- 1.8.x
+- 1.9.x
+- 1.10.x
+- 1.x
+
+go_import_path: github.com/prometheus/procfs
+
+script:
+- make style check_license vet test staticcheck
--- a/vendor/github.com/prometheus/procfs/Makefile
+++ b/vendor/github.com/prometheus/procfs/Makefile
@ -1,18 +1,71 @@
-ci: fmt lint test
+# Copyright 2018 The Prometheus Authors
+# 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.

-fmt:
-	! gofmt -l *.go | read nothing
-	go vet
+# Ensure GOBIN is not set during build so that promu is installed to the correct path
+unexport GOBIN

-lint:
-	go get github.com/golang/lint/golint
-	golint *.go
+GO           ?= go
+GOFMT        ?= $(GO)fmt
+FIRST_GOPATH := $(firstword $(subst :, ,$(shell $(GO) env GOPATH)))
+STATICCHECK  := $(FIRST_GOPATH)/bin/staticcheck
+pkgs          = $(shell $(GO) list ./... | grep -v /vendor/)

-test: sysfs/fixtures/.unpacked
-	go test -v ./...
+PREFIX                  ?= $(shell pwd)
+BIN_DIR                 ?= $(shell pwd)

-sysfs/fixtures/.unpacked: sysfs/fixtures.ttar
-	./ttar -C sysfs -x -f sysfs/fixtures.ttar
+ifdef DEBUG
+  bindata_flags = -debug
+endif
+
+STATICCHECK_IGNORE =
+
+all: format staticcheck build test
+
+style:
+	@echo ">> checking code style"
+	@! $(GOFMT) -d $(shell find . -path ./vendor -prune -o -name '*.go' -print) | grep '^'
+
+check_license:
+	@echo ">> checking license header"
+	@./scripts/check_license.sh
+
+test: fixtures/.unpacked sysfs/fixtures/.unpacked
+	@echo ">> running all tests"
+	@$(GO) test -race $(shell $(GO) list ./... | grep -v /vendor/ | grep -v examples)
+
+format:
+	@echo ">> formatting code"
+	@$(GO) fmt $(pkgs)
+
+vet:
+	@echo ">> vetting code"
+	@$(GO) vet $(pkgs)
+
+staticcheck: $(STATICCHECK)
+	@echo ">> running staticcheck"
+	@$(STATICCHECK) -ignore "$(STATICCHECK_IGNORE)" $(pkgs)
+
+%/.unpacked: %.ttar
+	./ttar -C $(dir $*) -x -f $*.ttar
 	touch $@

-.PHONY: fmt lint test ci
+$(FIRST_GOPATH)/bin/staticcheck:
+	@GOOS= GOARCH= $(GO) get -u honnef.co/go/tools/cmd/staticcheck
+
+.PHONY: all style check_license format test vet staticcheck
+
+# Declaring the binaries at their default locations as PHONY targets is a hack
+# to ensure the latest version is downloaded on every make execution.
+# If this is not desired, copy/symlink these binaries to a different path and
+# set the respective environment variables.
+.PHONY: $(GOPATH)/bin/staticcheck
--- a/vendor/github.com/prometheus/procfs/bcache/get.go
+++ b/vendor/github.com/prometheus/procfs/bcache/get.go
@ -61,7 +61,7 @@ func dehumanize(hbytes []byte) (uint64, error) {
 	mul := float64(1)
 	var (
 		mant float64
-		err error
+		err  error
 	)
 	// If lastByte is beyond the range of ASCII digits, it must be a
 	// multiplier.
@ -93,7 +93,7 @@ func dehumanize(hbytes []byte) (uint64, error) {
 			'Z': ZiB,
 			'Y': YiB,
 		}
-		mul = float64(multipliers[rune(lastByte)])
+		mul = multipliers[rune(lastByte)]
 		mant, err = parsePseudoFloat(string(hbytes))
 		if err != nil {
 			return 0, err
@ -139,10 +139,10 @@ func (p *parser) readValue(fileName string) uint64 {
 }

 // ParsePriorityStats parses lines from the priority_stats file.
-func parsePriorityStats(line string, ps *PriorityStats) (error) {
+func parsePriorityStats(line string, ps *PriorityStats) error {
 	var (
 		value uint64
-		err error
+		err   error
 	)
 	switch {
 	case strings.HasPrefix(line, "Unused:"):
--- a/vendor/github.com/prometheus/procfs/bcache/get_test.go
+++ b/vendor/github.com/prometheus/procfs/bcache/get_test.go
@ -14,8 +14,8 @@
 package bcache

 import (
-	"testing"
 	"math"
+	"testing"
 )

 func TestDehumanizeTests(t *testing.T) {
@ -45,8 +45,8 @@ func TestDehumanizeTests(t *testing.T) {
 			out: 2024,
 		},
 		{
-			in:  []byte(""),
-			out: 0,
+			in:      []byte(""),
+			out:     0,
 			invalid: true,
 		},
 	}
@ -59,7 +59,7 @@ func TestDehumanizeTests(t *testing.T) {
 			t.Errorf("unexpected error: %v", err)
 		}
 		if got != tst.out {
-			t.Errorf("dehumanize: '%s', want %f, got %f", tst.in, tst.out, got)
+			t.Errorf("dehumanize: '%s', want %d, got %d", tst.in, tst.out, got)
 		}
 	}
 }
@ -84,7 +84,7 @@ func TestParsePseudoFloatTests(t *testing.T) {
 	}
 	for _, tst := range parsePseudoFloatTests {
 		got, err := parsePseudoFloat(tst.in)
-		if err != nil || math.Abs(got - tst.out) > 0.0001 {
+		if err != nil || math.Abs(got-tst.out) > 0.0001 {
 			t.Errorf("parsePseudoFloat: %s, want %f, got %f", tst.in, tst.out, got)
 		}
 	}
@ -92,23 +92,23 @@ func TestParsePseudoFloatTests(t *testing.T) {

 func TestPriorityStats(t *testing.T) {
 	var want = PriorityStats{
-		UnusedPercent: 99,
+		UnusedPercent:   99,
 		MetadataPercent: 5,
 	}
 	var (
-		in string
+		in     string
 		gotErr error
-		got PriorityStats
+		got    PriorityStats
 	)
 	in = "Metadata:       5%"
 	gotErr = parsePriorityStats(in, &got)
 	if gotErr != nil || got.MetadataPercent != want.MetadataPercent {
-		t.Errorf("parsePriorityStats: '%s', want %f, got %f", in, want.MetadataPercent, got.MetadataPercent)
+		t.Errorf("parsePriorityStats: '%s', want %d, got %d", in, want.MetadataPercent, got.MetadataPercent)
 	}

 	in = "Unused:         99%"
 	gotErr = parsePriorityStats(in, &got)
 	if gotErr != nil || got.UnusedPercent != want.UnusedPercent {
-		t.Errorf("parsePriorityStats: '%s', want %f, got %f", in, want.UnusedPercent, got.UnusedPercent)
+		t.Errorf("parsePriorityStats: '%s', want %d, got %d", in, want.UnusedPercent, got.UnusedPercent)
 	}
 }
--- a/vendor/github.com/prometheus/procfs/buddyinfo.go
+++ b/vendor/github.com/prometheus/procfs/buddyinfo.go
@ -62,7 +62,7 @@ func parseBuddyInfo(r io.Reader) ([]BuddyInfo, error) {
 	for scanner.Scan() {
 		var err error
 		line := scanner.Text()
-		parts := strings.Fields(string(line))
+		parts := strings.Fields(line)

 		if len(parts) < 4 {
 			return nil, fmt.Errorf("invalid number of fields when parsing buddyinfo")
--- a/vendor/github.com/prometheus/procfs/fixtures.ttar
+++ b/vendor/github.com/prometheus/procfs/fixtures.ttar
@ -0,0 +1,446 @@
+# Archive created by ttar -c -f fixtures.ttar fixtures/
+Directory: fixtures
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/26231
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/26231/cmdline
+Lines: 1
+vimNULLBYTEtest.goNULLBYTE+10NULLBYTEEOF
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/26231/comm
+Lines: 1
+vim
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/26231/exe
+SymlinkTo: /usr/bin/vim
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/26231/fd
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/26231/fd/0
+SymlinkTo: ../../symlinktargets/abc
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/26231/fd/1
+SymlinkTo: ../../symlinktargets/def
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/26231/fd/10
+SymlinkTo: ../../symlinktargets/xyz
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/26231/fd/2
+SymlinkTo: ../../symlinktargets/ghi
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/26231/fd/3
+SymlinkTo: ../../symlinktargets/uvw
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/26231/io
+Lines: 7
+rchar: 750339
+wchar: 818609
+syscr: 7405
+syscw: 5245
+read_bytes: 1024
+write_bytes: 2048
+cancelled_write_bytes: -1024
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/26231/limits
+Lines: 17
+Limit                     Soft Limit           Hard Limit           Units
+Max cpu time              unlimited            unlimited            seconds
+Max file size             unlimited            unlimited            bytes
+Max data size             unlimited            unlimited            bytes
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+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/symlinktargets
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/symlinktargets/README
+Lines: 2
+This directory contains some empty files that are the symlinks the files in the "fd" directory point to.
+They are otherwise ignored by the tests
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/symlinktargets/abc
+Lines: 0
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/symlinktargets/def
+Lines: 0
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/symlinktargets/ghi
+Lines: 0
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/symlinktargets/uvw
+Lines: 0
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/symlinktargets/xyz
+Lines: 0
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
--- a/vendor/github.com/prometheus/procfs/fixtures/26231/cmdline
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/cmdline
--- a/vendor/github.com/prometheus/procfs/fixtures/26231/comm
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/comm
@ -1 +0,0 @@
-vim
--- a/vendor/github.com/prometheus/procfs/fixtures/26231/exe
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/exe
@ -1 +0,0 @@
-/usr/bin/vim
--- a/vendor/github.com/prometheus/procfs/fixtures/26231/fd/0
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/fd/0
@ -1 +0,0 @@
-../../symlinktargets/abc
--- a/vendor/github.com/prometheus/procfs/fixtures/26231/fd/1
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/fd/1
@ -1 +0,0 @@
-../../symlinktargets/def
--- a/vendor/github.com/prometheus/procfs/fixtures/26231/fd/10
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/fd/10
@ -1 +0,0 @@
-../../symlinktargets/xyz
--- a/vendor/github.com/prometheus/procfs/fixtures/26231/fd/2
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/fd/2
@ -1 +0,0 @@
-../../symlinktargets/ghi
--- a/vendor/github.com/prometheus/procfs/fixtures/26231/fd/3
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/fd/3
@ -1 +0,0 @@
-../../symlinktargets/uvw
--- a/vendor/github.com/prometheus/procfs/fixtures/26231/io
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/io
@ -1,7 +0,0 @@
-rchar: 750339
-wchar: 818609
-syscr: 7405
-syscw: 5245
-read_bytes: 1024
-write_bytes: 2048
-cancelled_write_bytes: -1024
--- a/vendor/github.com/prometheus/procfs/fixtures/26231/limits
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/limits
@ -1,17 +0,0 @@
-Limit                     Soft Limit           Hard Limit           Units
-Max cpu time              unlimited            unlimited            seconds
-Max file size             unlimited            unlimited            bytes
-Max data size             unlimited            unlimited            bytes
-Max stack size            8388608              unlimited            bytes
-Max core file size        0                    unlimited            bytes
-Max resident set          unlimited            unlimited            bytes
-Max processes             62898                62898                processes
-Max open files            2048                 4096                 files
-Max locked memory         65536                65536                bytes
-Max address space         8589934592           unlimited            bytes
-Max file locks            unlimited            unlimited            locks
-Max pending signals       62898                62898                signals
-Max msgqueue size         819200               819200               bytes
-Max nice priority         0                    0
-Max realtime priority     0                    0
-Max realtime timeout      unlimited            unlimited            us
--- a/vendor/github.com/prometheus/procfs/fixtures/26231/mountstats
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/mountstats
@ -1,19 +0,0 @@
-device rootfs mounted on / with fstype rootfs
-device sysfs mounted on /sys with fstype sysfs
-device proc mounted on /proc with fstype proc
-device /dev/sda1 mounted on / with fstype ext4
-device 192.168.1.1:/srv/test mounted on /mnt/nfs/test with fstype nfs4 statvers=1.1
-	opts:	rw,vers=4.0,rsize=1048576,wsize=1048576,namlen=255,acregmin=3,acregmax=60,acdirmin=30,acdirmax=60,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=192.168.1.5,local_lock=none
-	age:	13968
-	caps:	caps=0xfff7,wtmult=512,dtsize=32768,bsize=0,namlen=255
-	nfsv4:	bm0=0xfdffafff,bm1=0xf9be3e,bm2=0x0,acl=0x0,pnfs=not configured
-	sec:	flavor=1,pseudoflavor=1
-	events:	52 226 0 0 1 13 398 0 0 331 0 47 0 0 77 0 0 77 0 0 0 0 0 0 0 0 0
-	bytes:	1207640230 0 0 0 1210214218 0 295483 0
-	RPC iostats version: 1.0  p/v: 100003/4 (nfs)
-	xprt:	tcp 832 0 1 0 11 6428 6428 0 12154 0 24 26 5726
-	per-op statistics
-	        NULL: 0 0 0 0 0 0 0 0
-	        READ: 1298 1298 0 207680 1210292152 6 79386 79407
-	       WRITE: 0 0 0 0 0 0 0 0
-
--- a/vendor/github.com/prometheus/procfs/fixtures/26231/stat
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/stat
@ -1 +0,0 @@
-26231 (vim) R 5392 7446 5392 34835 7446 4218880 32533 309516 26 82 1677 44 158 99 20 0 1 0 82375 56274944 1981 18446744073709551615 4194304 6294284 140736914091744 140736914087944 139965136429984 0 0 12288 1870679807 0 0 0 17 0 0 0 31 0 0 8391624 8481048 16420864 140736914093252 140736914093279 140736914093279 140736914096107 0
--- a/vendor/github.com/prometheus/procfs/fixtures/26232/cmdline
+++ b/vendor/github.com/prometheus/procfs/fixtures/26232/cmdline
--- a/vendor/github.com/prometheus/procfs/fixtures/26232/comm
+++ b/vendor/github.com/prometheus/procfs/fixtures/26232/comm
@ -1 +0,0 @@
-ata_sff
--- a/vendor/github.com/prometheus/procfs/fixtures/26232/fd/0
+++ b/vendor/github.com/prometheus/procfs/fixtures/26232/fd/0
@ -1 +0,0 @@
-../../symlinktargets/abc
--- a/vendor/github.com/prometheus/procfs/fixtures/26232/fd/1
+++ b/vendor/github.com/prometheus/procfs/fixtures/26232/fd/1
@ -1 +0,0 @@
-../../symlinktargets/def
--- a/vendor/github.com/prometheus/procfs/fixtures/26232/fd/2
+++ b/vendor/github.com/prometheus/procfs/fixtures/26232/fd/2
@ -1 +0,0 @@
-../../symlinktargets/ghi
--- a/vendor/github.com/prometheus/procfs/fixtures/26232/fd/3
+++ b/vendor/github.com/prometheus/procfs/fixtures/26232/fd/3
@ -1 +0,0 @@
-../../symlinktargets/uvw
--- a/vendor/github.com/prometheus/procfs/fixtures/26232/fd/4
+++ b/vendor/github.com/prometheus/procfs/fixtures/26232/fd/4
@ -1 +0,0 @@
-../../symlinktargets/xyz
--- a/vendor/github.com/prometheus/procfs/fixtures/26232/limits
+++ b/vendor/github.com/prometheus/procfs/fixtures/26232/limits
@ -1,17 +0,0 @@
-Limit                     Soft Limit           Hard Limit           Units     
-Max cpu time              unlimited            unlimited            seconds   
-Max file size             unlimited            unlimited            bytes     
-Max data size             unlimited            unlimited            bytes     
-Max stack size            8388608              unlimited            bytes     
-Max core file size        0                    unlimited            bytes     
-Max resident set          unlimited            unlimited            bytes     
-Max processes             29436                29436                processes 
-Max open files            1024                 4096                 files     
-Max locked memory         65536                65536                bytes     
-Max address space         unlimited            unlimited            bytes     
-Max file locks            unlimited            unlimited            locks     
-Max pending signals       29436                29436                signals   
-Max msgqueue size         819200               819200               bytes     
-Max nice priority         0                    0                    
-Max realtime priority     0                    0                    
-Max realtime timeout      unlimited            unlimited            us        
--- a/vendor/github.com/prometheus/procfs/fixtures/26232/stat
+++ b/vendor/github.com/prometheus/procfs/fixtures/26232/stat
@ -1 +0,0 @@
-33 (ata_sff) S 2 0 0 0 -1 69238880 0 0 0 0 0 0 0 0 0 -20 1 0 5 0 0 18446744073709551615 0 0 0 0 0 0 0 2147483647 0 18446744073709551615 0 0 17 1 0 0 0 0 0 0 0 0 0 0 0 0 0
--- a/vendor/github.com/prometheus/procfs/fixtures/584/stat
+++ b/vendor/github.com/prometheus/procfs/fixtures/584/stat
@ -1,2 +0,0 @@
-1020 ((a b ) ( c d) ) R 28378 1020 28378 34842 1020 4218880 286 0 0 0 0 0 0 0 20 0 1 0 10839175 10395648 155 18446744073709551615 4194304 4238788 140736466511168 140736466511168 140609271124624 0 0 0 0 0 0 0 17 5 0 0 0 0 0 6336016 6337300 25579520 140736466515030 140736466515061 140736466515061 140736466518002 0
-#!/bin/cat /proc/self/stat
--- a/vendor/github.com/prometheus/procfs/fixtures/buddyinfo/short/buddyinfo
+++ b/vendor/github.com/prometheus/procfs/fixtures/buddyinfo/short/buddyinfo
@ -1,3 +0,0 @@
-Node 0, zone
-Node 0, zone
-Node 0, zone
--- a/vendor/github.com/prometheus/procfs/fixtures/buddyinfo/sizemismatch/buddyinfo
+++ b/vendor/github.com/prometheus/procfs/fixtures/buddyinfo/sizemismatch/buddyinfo
@ -1,3 +0,0 @@
-Node 0, zone      DMA      1      0      1      0      2      1      1      0      1      1      3 
-Node 0, zone    DMA32    759    572    791    475    194     45     12      0      0      0      0      0
-Node 0, zone   Normal   4381   1093    185   1530    567    102      4      0      0      0
--- a/vendor/github.com/prometheus/procfs/fixtures/buddyinfo/valid/buddyinfo
+++ b/vendor/github.com/prometheus/procfs/fixtures/buddyinfo/valid/buddyinfo
@ -1,3 +0,0 @@
-Node 0, zone      DMA      1      0      1      0      2      1      1      0      1      1      3 
-Node 0, zone    DMA32    759    572    791    475    194     45     12      0      0      0      0 
-Node 0, zone   Normal   4381   1093    185   1530    567    102      4      0      0      0      0 
--- a/vendor/github.com/prometheus/procfs/fixtures/fs/xfs/stat
+++ b/vendor/github.com/prometheus/procfs/fixtures/fs/xfs/stat
@ -1,23 +0,0 @@
-extent_alloc 92447 97589 92448 93751
-abt 0 0 0 0
-blk_map 1767055 188820 184891 92447 92448 2140766 0
-bmbt 0 0 0 0
-dir 185039 92447 92444 136422
-trans 706 944304 0
-ig 185045 58807 0 126238 0 33637 22
-log 2883 113448 9 17360 739
-push_ail 945014 0 134260 15483 0 3940 464 159985 0 40
-xstrat 92447 0
-rw 107739 94045
-attr 4 0 0 0
-icluster 8677 7849 135802
-vnodes 92601 0 0 0 92444 92444 92444 0
-buf 2666287 7122 2659202 3599 2 7085 0 10297 7085
-abtb2 184941 1277345 13257 13278 0 0 0 0 0 0 0 0 0 0 2746147
-abtc2 345295 2416764 172637 172658 0 0 0 0 0 0 0 0 0 0 21406023
-bmbt2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
-ibt2 343004 1358467 0 0 0 0 0 0 0 0 0 0 0 0 0
-fibt2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
-qm 0 0 0 0 0 0 0 0
-xpc 399724544 92823103 86219234
-debug 0
--- a/vendor/github.com/prometheus/procfs/fixtures/mdstat
+++ b/vendor/github.com/prometheus/procfs/fixtures/mdstat
@ -1,26 +0,0 @@
-Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
-md3 : active raid6 sda1[8] sdh1[7] sdg1[6] sdf1[5] sde1[11] sdd1[3] sdc1[10] sdb1[9]
-      5853468288 blocks super 1.2 level 6, 64k chunk, algorithm 2 [8/8] [UUUUUUUU]
-      
-md127 : active raid1 sdi2[0] sdj2[1]
-      312319552 blocks [2/2] [UU]
-      
-md0 : active raid1 sdk[2](S) sdi1[0] sdj1[1]
-      248896 blocks [2/2] [UU]
-      
-md4 : inactive raid1 sda3[0] sdb3[1]
-      4883648 blocks [2/2] [UU]
-
-md6 : active raid1 sdb2[2] sda2[0]
-      195310144 blocks [2/1] [U_]
-      [=>...................]  recovery =  8.5% (16775552/195310144) finish=17.0min speed=259783K/sec
-
-md8 : active raid1 sdb1[1] sda1[0]
-      195310144 blocks [2/2] [UU]
-      [=>...................]  resync =  8.5% (16775552/195310144) finish=17.0min speed=259783K/sec
-
-md7 : active raid6 sdb1[0] sde1[3] sdd1[2] sdc1[1]
-      7813735424 blocks super 1.2 level 6, 512k chunk, algorithm 2 [4/3] [U_UU]
-      bitmap: 0/30 pages [0KB], 65536KB chunk
-
-unused devices: <none>
--- a/vendor/github.com/prometheus/procfs/fixtures/net/ip_vs
+++ b/vendor/github.com/prometheus/procfs/fixtures/net/ip_vs
@ -1,21 +0,0 @@
-IP Virtual Server version 1.2.1 (size=4096)
-Prot LocalAddress:Port Scheduler Flags
-  -> RemoteAddress:Port Forward Weight ActiveConn InActConn
-TCP  C0A80016:0CEA wlc
-  -> C0A85216:0CEA      Tunnel  100    248        2
-  -> C0A85318:0CEA      Tunnel  100    248        2
-  -> C0A85315:0CEA      Tunnel  100    248        1
-TCP  C0A80039:0CEA wlc
-  -> C0A85416:0CEA      Tunnel  0      0          0
-  -> C0A85215:0CEA      Tunnel  100    1499       0
-  -> C0A83215:0CEA      Tunnel  100    1498       0
-TCP  C0A80037:0CEA wlc
-  -> C0A8321A:0CEA      Tunnel  0      0          0
-  -> C0A83120:0CEA      Tunnel  100    0          0
-TCP  [2620:0000:0000:0000:0000:0000:0000:0001]:0050 sh
-  -> [2620:0000:0000:0000:0000:0000:0000:0002]:0050      Route   1      0          0
-  -> [2620:0000:0000:0000:0000:0000:0000:0003]:0050      Route   1      0          0
-  -> [2620:0000:0000:0000:0000:0000:0000:0004]:0050      Route   1      1          1
-FWM  10001000 wlc
-  -> C0A8321A:0CEA      Route   0      0          1
-  -> C0A83215:0CEA      Route   0      0          2
--- a/vendor/github.com/prometheus/procfs/fixtures/net/ip_vs_stats
+++ b/vendor/github.com/prometheus/procfs/fixtures/net/ip_vs_stats
@ -1,6 +0,0 @@
-   Total Incoming Outgoing         Incoming         Outgoing
-   Conns  Packets  Packets            Bytes            Bytes
- 16AA370 E33656E5        0     51D8C8883AB3                0
-
- Conns/s   Pkts/s   Pkts/s          Bytes/s          Bytes/s
-       4    1FB3C        0          1282A8F                0
--- a/vendor/github.com/prometheus/procfs/fixtures/net/xfrm_stat
+++ b/vendor/github.com/prometheus/procfs/fixtures/net/xfrm_stat
@ -1,28 +0,0 @@
-XfrmInError                     1
-XfrmInBufferError               2
-XfrmInHdrError                  4
-XfrmInNoStates                  3
-XfrmInStateProtoError           40
-XfrmInStateModeError            100
-XfrmInStateSeqError             6000
-XfrmInStateExpired              4
-XfrmInStateMismatch             23451
-XfrmInStateInvalid              55555
-XfrmInTmplMismatch              51
-XfrmInNoPols                    65432
-XfrmInPolBlock                  100
-XfrmInPolError                  10000
-XfrmOutError                    1000000
-XfrmOutBundleGenError           43321
-XfrmOutBundleCheckError         555
-XfrmOutNoStates                 869
-XfrmOutStateProtoError          4542
-XfrmOutStateModeError           4
-XfrmOutStateSeqError            543
-XfrmOutStateExpired             565
-XfrmOutPolBlock                 43456
-XfrmOutPolDead                  7656
-XfrmOutPolError                 1454
-XfrmFwdHdrError                 6654
-XfrmOutStateInvalid             28765
-XfrmAcquireError                24532
--- a/vendor/github.com/prometheus/procfs/fixtures/self
+++ b/vendor/github.com/prometheus/procfs/fixtures/self
@ -1 +0,0 @@
-26231
--- a/vendor/github.com/prometheus/procfs/fixtures/stat
+++ b/vendor/github.com/prometheus/procfs/fixtures/stat
@ -1,16 +0,0 @@
-cpu  301854 612 111922 8979004 3552 2 3944 0 0 0
-cpu0 44490 19 21045 1087069 220 1 3410 0 0 0
-cpu1 47869 23 16474 1110787 591 0 46 0 0 0
-cpu2 46504 36 15916 1112321 441 0 326 0 0 0
-cpu3 47054 102 15683 1113230 533 0 60 0 0 0
-cpu4 28413 25 10776 1140321 217 0 8 0 0 0
-cpu5 29271 101 11586 1136270 672 0 30 0 0 0
-cpu6 29152 36 10276 1139721 319 0 29 0 0 0
-cpu7 29098 268 10164 1139282 555 0 31 0 0 0
-intr 8885917 17 0 0 0 0 0 0 0 1 79281 0 0 0 0 0 0 0 231237 0 0 0 0 250586 103 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 223424 190745 13 906 1283803 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
-ctxt 38014093
-btime 1418183276
-processes 26442
-procs_running 2
-procs_blocked 1
-softirq 5057579 250191 1481983 1647 211099 186066 0 1783454 622196 12499 508444
--- a/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/README
+++ b/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/README
@ -1,2 +0,0 @@
-This directory contains some empty files that are the symlinks the files in the "fd" directory point to.
-They are otherwise ignored by the tests
--- a/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/abc
+++ b/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/abc
--- a/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/def
+++ b/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/def
--- a/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/ghi
+++ b/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/ghi
--- a/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/uvw
+++ b/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/uvw
--- a/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/xyz
+++ b/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/xyz
--- a/vendor/github.com/prometheus/procfs/fs.go
+++ b/vendor/github.com/prometheus/procfs/fs.go
@ -1,3 +1,16 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
 package procfs

 import (
@ -5,6 +18,7 @@ import (
 	"os"
 	"path"

+	"github.com/prometheus/procfs/nfs"
 	"github.com/prometheus/procfs/xfs"
 )

@ -44,3 +58,25 @@ func (fs FS) XFSStats() (*xfs.Stats, error) {

 	return xfs.ParseStats(f)
 }
+
+// NFSClientRPCStats retrieves NFS client RPC statistics.
+func (fs FS) NFSClientRPCStats() (*nfs.ClientRPCStats, error) {
+	f, err := os.Open(fs.Path("net/rpc/nfs"))
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+
+	return nfs.ParseClientRPCStats(f)
+}
+
+// NFSdServerRPCStats retrieves NFS daemon RPC statistics.
+func (fs FS) NFSdServerRPCStats() (*nfs.ServerRPCStats, error) {
+	f, err := os.Open(fs.Path("net/rpc/nfsd"))
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+
+	return nfs.ParseServerRPCStats(f)
+}
--- a/vendor/github.com/prometheus/procfs/fs_test.go
+++ b/vendor/github.com/prometheus/procfs/fs_test.go
@ -1,3 +1,16 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
 package procfs

 import "testing"
--- a/vendor/github.com/prometheus/procfs/internal/util/parse.go
+++ b/vendor/github.com/prometheus/procfs/internal/util/parse.go
@ -0,0 +1,46 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
+package util
+
+import "strconv"
+
+// ParseUint32s parses a slice of strings into a slice of uint32s.
+func ParseUint32s(ss []string) ([]uint32, error) {
+	us := make([]uint32, 0, len(ss))
+	for _, s := range ss {
+		u, err := strconv.ParseUint(s, 10, 32)
+		if err != nil {
+			return nil, err
+		}
+
+		us = append(us, uint32(u))
+	}
+
+	return us, nil
+}
+
+// ParseUint64s parses a slice of strings into a slice of uint64s.
+func ParseUint64s(ss []string) ([]uint64, error) {
+	us := make([]uint64, 0, len(ss))
+	for _, s := range ss {
+		u, err := strconv.ParseUint(s, 10, 64)
+		if err != nil {
+			return nil, err
+		}
+
+		us = append(us, u)
+	}
+
+	return us, nil
+}
--- a/vendor/github.com/prometheus/procfs/ipvs.go
+++ b/vendor/github.com/prometheus/procfs/ipvs.go
@ -1,3 +1,16 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
 package procfs

 import (
@ -31,16 +44,16 @@ type IPVSStats struct {
 type IPVSBackendStatus struct {
 	// The local (virtual) IP address.
 	LocalAddress net.IP
+	// The remote (real) IP address.
+	RemoteAddress net.IP
 	// The local (virtual) port.
 	LocalPort uint16
+	// The remote (real) port.
+	RemotePort uint16
 	// The local firewall mark
 	LocalMark string
 	// The transport protocol (TCP, UDP).
 	Proto string
-	// The remote (real) IP address.
-	RemoteAddress net.IP
-	// The remote (real) port.
-	RemotePort uint16
 	// The current number of active connections for this virtual/real address pair.
 	ActiveConn uint64
 	// The current number of inactive connections for this virtual/real address pair.
@ -151,7 +164,7 @@ func parseIPVSBackendStatus(file io.Reader) ([]IPVSBackendStatus, error) {
 	)

 	for scanner.Scan() {
-		fields := strings.Fields(string(scanner.Text()))
+		fields := strings.Fields(scanner.Text())
 		if len(fields) == 0 {
 			continue
 		}
--- a/vendor/github.com/prometheus/procfs/ipvs_test.go
+++ b/vendor/github.com/prometheus/procfs/ipvs_test.go
@ -1,3 +1,16 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
 package procfs

 import (
--- a/vendor/github.com/prometheus/procfs/mdstat.go
+++ b/vendor/github.com/prometheus/procfs/mdstat.go
@ -1,3 +1,16 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
 package procfs

 import (
--- a/vendor/github.com/prometheus/procfs/mdstat_test.go
+++ b/vendor/github.com/prometheus/procfs/mdstat_test.go
@ -1,3 +1,16 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
 package procfs

 import (
--- a/vendor/github.com/prometheus/procfs/mountstats.go
+++ b/vendor/github.com/prometheus/procfs/mountstats.go
@ -1,3 +1,16 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
 package procfs

 // While implementing parsing of /proc/[pid]/mountstats, this blog was used
--- a/vendor/github.com/prometheus/procfs/mountstats_test.go
+++ b/vendor/github.com/prometheus/procfs/mountstats_test.go
@ -1,3 +1,16 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
 package procfs

 import (
--- a/vendor/github.com/prometheus/procfs/net_dev.go
+++ b/vendor/github.com/prometheus/procfs/net_dev.go
@ -0,0 +1,216 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
+package procfs
+
+import (
+	"bufio"
+	"errors"
+	"os"
+	"sort"
+	"strconv"
+	"strings"
+)
+
+// NetDevLine is single line parsed from /proc/net/dev or /proc/[pid]/net/dev.
+type NetDevLine struct {
+	Name         string `json:"name"`          // The name of the interface.
+	RxBytes      uint64 `json:"rx_bytes"`      // Cumulative count of bytes received.
+	RxPackets    uint64 `json:"rx_packets"`    // Cumulative count of packets received.
+	RxErrors     uint64 `json:"rx_errors"`     // Cumulative count of receive errors encountered.
+	RxDropped    uint64 `json:"rx_dropped"`    // Cumulative count of packets dropped while receiving.
+	RxFIFO       uint64 `json:"rx_fifo"`       // Cumulative count of FIFO buffer errors.
+	RxFrame      uint64 `json:"rx_frame"`      // Cumulative count of packet framing errors.
+	RxCompressed uint64 `json:"rx_compressed"` // Cumulative count of compressed packets received by the device driver.
+	RxMulticast  uint64 `json:"rx_multicast"`  // Cumulative count of multicast frames received by the device driver.
+	TxBytes      uint64 `json:"tx_bytes"`      // Cumulative count of bytes transmitted.
+	TxPackets    uint64 `json:"tx_packets"`    // Cumulative count of packets transmitted.
+	TxErrors     uint64 `json:"tx_errors"`     // Cumulative count of transmit errors encountered.
+	TxDropped    uint64 `json:"tx_dropped"`    // Cumulative count of packets dropped while transmitting.
+	TxFIFO       uint64 `json:"tx_fifo"`       // Cumulative count of FIFO buffer errors.
+	TxCollisions uint64 `json:"tx_collisions"` // Cumulative count of collisions detected on the interface.
+	TxCarrier    uint64 `json:"tx_carrier"`    // Cumulative count of carrier losses detected by the device driver.
+	TxCompressed uint64 `json:"tx_compressed"` // Cumulative count of compressed packets transmitted by the device driver.
+}
+
+// NetDev is parsed from /proc/net/dev or /proc/[pid]/net/dev. The map keys
+// are interface names.
+type NetDev map[string]NetDevLine
+
+// NewNetDev returns kernel/system statistics read from /proc/net/dev.
+func NewNetDev() (NetDev, error) {
+	fs, err := NewFS(DefaultMountPoint)
+	if err != nil {
+		return nil, err
+	}
+
+	return fs.NewNetDev()
+}
+
+// NewNetDev returns kernel/system statistics read from /proc/net/dev.
+func (fs FS) NewNetDev() (NetDev, error) {
+	return newNetDev(fs.Path("net/dev"))
+}
+
+// NewNetDev returns kernel/system statistics read from /proc/[pid]/net/dev.
+func (p Proc) NewNetDev() (NetDev, error) {
+	return newNetDev(p.path("net/dev"))
+}
+
+// newNetDev creates a new NetDev from the contents of the given file.
+func newNetDev(file string) (NetDev, error) {
+	f, err := os.Open(file)
+	if err != nil {
+		return NetDev{}, err
+	}
+	defer f.Close()
+
+	nd := NetDev{}
+	s := bufio.NewScanner(f)
+	for n := 0; s.Scan(); n++ {
+		// Skip the 2 header lines.
+		if n < 2 {
+			continue
+		}
+
+		line, err := nd.parseLine(s.Text())
+		if err != nil {
+			return nd, err
+		}
+
+		nd[line.Name] = *line
+	}
+
+	return nd, s.Err()
+}
+
+// parseLine parses a single line from the /proc/net/dev file. Header lines
+// must be filtered prior to calling this method.
+func (nd NetDev) parseLine(rawLine string) (*NetDevLine, error) {
+	parts := strings.SplitN(rawLine, ":", 2)
+	if len(parts) != 2 {
+		return nil, errors.New("invalid net/dev line, missing colon")
+	}
+	fields := strings.Fields(strings.TrimSpace(parts[1]))
+
+	var err error
+	line := &NetDevLine{}
+
+	// Interface Name
+	line.Name = strings.TrimSpace(parts[0])
+	if line.Name == "" {
+		return nil, errors.New("invalid net/dev line, empty interface name")
+	}
+
+	// RX
+	line.RxBytes, err = strconv.ParseUint(fields[0], 10, 64)
+	if err != nil {
+		return nil, err
+	}
+	line.RxPackets, err = strconv.ParseUint(fields[1], 10, 64)
+	if err != nil {
+		return nil, err
+	}
+	line.RxErrors, err = strconv.ParseUint(fields[2], 10, 64)
+	if err != nil {
+		return nil, err
+	}
+	line.RxDropped, err = strconv.ParseUint(fields[3], 10, 64)
+	if err != nil {
+		return nil, err
+	}
+	line.RxFIFO, err = strconv.ParseUint(fields[4], 10, 64)
+	if err != nil {
+		return nil, err
+	}
+	line.RxFrame, err = strconv.ParseUint(fields[5], 10, 64)
+	if err != nil {
+		return nil, err
+	}
+	line.RxCompressed, err = strconv.ParseUint(fields[6], 10, 64)
+	if err != nil {
+		return nil, err
+	}
+	line.RxMulticast, err = strconv.ParseUint(fields[7], 10, 64)
+	if err != nil {
+		return nil, err
+	}
+
+	// TX
+	line.TxBytes, err = strconv.ParseUint(fields[8], 10, 64)
+	if err != nil {
+		return nil, err
+	}
+	line.TxPackets, err = strconv.ParseUint(fields[9], 10, 64)
+	if err != nil {
+		return nil, err
+	}
+	line.TxErrors, err = strconv.ParseUint(fields[10], 10, 64)
+	if err != nil {
+		return nil, err
+	}
+	line.TxDropped, err = strconv.ParseUint(fields[11], 10, 64)
+	if err != nil {
+		return nil, err
+	}
+	line.TxFIFO, err = strconv.ParseUint(fields[12], 10, 64)
+	if err != nil {
+		return nil, err
+	}
+	line.TxCollisions, err = strconv.ParseUint(fields[13], 10, 64)
+	if err != nil {
+		return nil, err
+	}
+	line.TxCarrier, err = strconv.ParseUint(fields[14], 10, 64)
+	if err != nil {
+		return nil, err
+	}
+	line.TxCompressed, err = strconv.ParseUint(fields[15], 10, 64)
+	if err != nil {
+		return nil, err
+	}
+
+	return line, nil
+}
+
+// Total aggregates the values across interfaces and returns a new NetDevLine.
+// The Name field will be a sorted comma seperated list of interface names.
+func (nd NetDev) Total() NetDevLine {
+	total := NetDevLine{}
+
+	names := make([]string, 0, len(nd))
+	for _, ifc := range nd {
+		names = append(names, ifc.Name)
+		total.RxBytes += ifc.RxBytes
+		total.RxPackets += ifc.RxPackets
+		total.RxPackets += ifc.RxPackets
+		total.RxErrors += ifc.RxErrors
+		total.RxDropped += ifc.RxDropped
+		total.RxFIFO += ifc.RxFIFO
+		total.RxFrame += ifc.RxFrame
+		total.RxCompressed += ifc.RxCompressed
+		total.RxMulticast += ifc.RxMulticast
+		total.TxBytes += ifc.TxBytes
+		total.TxPackets += ifc.TxPackets
+		total.TxErrors += ifc.TxErrors
+		total.TxDropped += ifc.TxDropped
+		total.TxFIFO += ifc.TxFIFO
+		total.TxCollisions += ifc.TxCollisions
+		total.TxCarrier += ifc.TxCarrier
+		total.TxCompressed += ifc.TxCompressed
+	}
+	sort.Strings(names)
+	total.Name = strings.Join(names, ", ")
+
+	return total
+}
--- a/vendor/github.com/prometheus/procfs/net_dev_test.go
+++ b/vendor/github.com/prometheus/procfs/net_dev_test.go
@ -0,0 +1,86 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
+package procfs
+
+import (
+	"testing"
+)
+
+func TestNetDevParseLine(t *testing.T) {
+	const rawLine = `  eth0: 1 2 3    4    5     6          7         8 9  10    11    12    13     14       15          16`
+
+	have, err := NetDev{}.parseLine(rawLine)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	want := NetDevLine{"eth0", 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16}
+	if want != *have {
+		t.Errorf("want %v, have %v", want, have)
+	}
+}
+
+func TestNewNetDev(t *testing.T) {
+	fs, err := NewFS("fixtures")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	nd, err := fs.NewNetDev()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	lines := map[string]NetDevLine{
+		"vethf345468": {Name: "vethf345468", RxBytes: 648, RxPackets: 8, TxBytes: 438, TxPackets: 5},
+		"lo":          {Name: "lo", RxBytes: 1664039048, RxPackets: 1566805, TxBytes: 1664039048, TxPackets: 1566805},
+		"docker0":     {Name: "docker0", RxBytes: 2568, RxPackets: 38, TxBytes: 438, TxPackets: 5},
+		"eth0":        {Name: "eth0", RxBytes: 874354587, RxPackets: 1036395, TxBytes: 563352563, TxPackets: 732147},
+	}
+
+	if want, have := len(lines), len(nd); want != have {
+		t.Errorf("want %d parsed net/dev lines, have %d", want, have)
+	}
+	for _, line := range nd {
+		if want, have := lines[line.Name], line; want != have {
+			t.Errorf("%s: want %v, have %v", line.Name, want, have)
+		}
+	}
+}
+
+func TestProcNewNetDev(t *testing.T) {
+	p, err := FS("fixtures").NewProc(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	nd, err := p.NewNetDev()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	lines := map[string]NetDevLine{
+		"lo":   {Name: "lo"},
+		"eth0": {Name: "eth0", RxBytes: 438, RxPackets: 5, TxBytes: 648, TxPackets: 8},
+	}
+
+	if want, have := len(lines), len(nd); want != have {
+		t.Errorf("want %d parsed net/dev lines, have %d", want, have)
+	}
+	for _, line := range nd {
+		if want, have := lines[line.Name], line; want != have {
+			t.Errorf("%s: want %v, have %v", line.Name, want, have)
+		}
+	}
+}
--- a/vendor/github.com/prometheus/procfs/nfs/nfs.go
+++ b/vendor/github.com/prometheus/procfs/nfs/nfs.go
@ -0,0 +1,263 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
+// Package nfsd implements parsing of /proc/net/rpc/nfsd.
+// Fields are documented in https://www.svennd.be/nfsd-stats-explained-procnetrpcnfsd/
+package nfs
+
+// ReplyCache models the "rc" line.
+type ReplyCache struct {
+	Hits    uint64
+	Misses  uint64
+	NoCache uint64
+}
+
+// FileHandles models the "fh" line.
+type FileHandles struct {
+	Stale        uint64
+	TotalLookups uint64
+	AnonLookups  uint64
+	DirNoCache   uint64
+	NoDirNoCache uint64
+}
+
+// InputOutput models the "io" line.
+type InputOutput struct {
+	Read  uint64
+	Write uint64
+}
+
+// Threads models the "th" line.
+type Threads struct {
+	Threads uint64
+	FullCnt uint64
+}
+
+// ReadAheadCache models the "ra" line.
+type ReadAheadCache struct {
+	CacheSize      uint64
+	CacheHistogram []uint64
+	NotFound       uint64
+}
+
+// Network models the "net" line.
+type Network struct {
+	NetCount   uint64
+	UDPCount   uint64
+	TCPCount   uint64
+	TCPConnect uint64
+}
+
+// ClientRPC models the nfs "rpc" line.
+type ClientRPC struct {
+	RPCCount        uint64
+	Retransmissions uint64
+	AuthRefreshes   uint64
+}
+
+// ServerRPC models the nfsd "rpc" line.
+type ServerRPC struct {
+	RPCCount uint64
+	BadCnt   uint64
+	BadFmt   uint64
+	BadAuth  uint64
+	BadcInt  uint64
+}
+
+// V2Stats models the "proc2" line.
+type V2Stats struct {
+	Null     uint64
+	GetAttr  uint64
+	SetAttr  uint64
+	Root     uint64
+	Lookup   uint64
+	ReadLink uint64
+	Read     uint64
+	WrCache  uint64
+	Write    uint64
+	Create   uint64
+	Remove   uint64
+	Rename   uint64
+	Link     uint64
+	SymLink  uint64
+	MkDir    uint64
+	RmDir    uint64
+	ReadDir  uint64
+	FsStat   uint64
+}
+
+// V3Stats models the "proc3" line.
+type V3Stats struct {
+	Null        uint64
+	GetAttr     uint64
+	SetAttr     uint64
+	Lookup      uint64
+	Access      uint64
+	ReadLink    uint64
+	Read        uint64
+	Write       uint64
+	Create      uint64
+	MkDir       uint64
+	SymLink     uint64
+	MkNod       uint64
+	Remove      uint64
+	RmDir       uint64
+	Rename      uint64
+	Link        uint64
+	ReadDir     uint64
+	ReadDirPlus uint64
+	FsStat      uint64
+	FsInfo      uint64
+	PathConf    uint64
+	Commit      uint64
+}
+
+// ClientV4Stats models the nfs "proc4" line.
+type ClientV4Stats struct {
+	Null               uint64
+	Read               uint64
+	Write              uint64
+	Commit             uint64
+	Open               uint64
+	OpenConfirm        uint64
+	OpenNoattr         uint64
+	OpenDowngrade      uint64
+	Close              uint64
+	Setattr            uint64
+	FsInfo             uint64
+	Renew              uint64
+	SetClientId        uint64
+	SetClientIdConfirm uint64
+	Lock               uint64
+	Lockt              uint64
+	Locku              uint64
+	Access             uint64
+	Getattr            uint64
+	Lookup             uint64
+	LookupRoot         uint64
+	Remove             uint64
+	Rename             uint64
+	Link               uint64
+	Symlink            uint64
+	Create             uint64
+	Pathconf           uint64
+	StatFs             uint64
+	ReadLink           uint64
+	ReadDir            uint64
+	ServerCaps         uint64
+	DelegReturn        uint64
+	GetAcl             uint64
+	SetAcl             uint64
+	FsLocations        uint64
+	ReleaseLockowner   uint64
+	Secinfo            uint64
+	FsidPresent        uint64
+	ExchangeId         uint64
+	CreateSession      uint64
+	DestroySession     uint64
+	Sequence           uint64
+	GetLeaseTime       uint64
+	ReclaimComplete    uint64
+	LayoutGet          uint64
+	GetDeviceInfo      uint64
+	LayoutCommit       uint64
+	LayoutReturn       uint64
+	SecinfoNoName      uint64
+	TestStateId        uint64
+	FreeStateId        uint64
+	GetDeviceList      uint64
+	BindConnToSession  uint64
+	DestroyClientId    uint64
+	Seek               uint64
+	Allocate           uint64
+	DeAllocate         uint64
+	LayoutStats        uint64
+	Clone              uint64
+}
+
+// ServerV4Stats models the nfsd "proc4" line.
+type ServerV4Stats struct {
+	Null     uint64
+	Compound uint64
+}
+
+// V4Ops models the "proc4ops" line: NFSv4 operations
+// Variable list, see:
+// v4.0 https://tools.ietf.org/html/rfc3010 (38 operations)
+// v4.1 https://tools.ietf.org/html/rfc5661 (58 operations)
+// v4.2 https://tools.ietf.org/html/draft-ietf-nfsv4-minorversion2-41 (71 operations)
+type V4Ops struct {
+	//Values       uint64 // Variable depending on v4.x sub-version. TODO: Will this always at least include the fields in this struct?
+	Op0Unused    uint64
+	Op1Unused    uint64
+	Op2Future    uint64
+	Access       uint64
+	Close        uint64
+	Commit       uint64
+	Create       uint64
+	DelegPurge   uint64
+	DelegReturn  uint64
+	GetAttr      uint64
+	GetFH        uint64
+	Link         uint64
+	Lock         uint64
+	Lockt        uint64
+	Locku        uint64
+	Lookup       uint64
+	LookupRoot   uint64
+	Nverify      uint64
+	Open         uint64
+	OpenAttr     uint64
+	OpenConfirm  uint64
+	OpenDgrd     uint64
+	PutFH        uint64
+	PutPubFH     uint64
+	PutRootFH    uint64
+	Read         uint64
+	ReadDir      uint64
+	ReadLink     uint64
+	Remove       uint64
+	Rename       uint64
+	Renew        uint64
+	RestoreFH    uint64
+	SaveFH       uint64
+	SecInfo      uint64
+	SetAttr      uint64
+	Verify       uint64
+	Write        uint64
+	RelLockOwner uint64
+}
+
+// RPCStats models all stats from /proc/net/rpc/nfs.
+type ClientRPCStats struct {
+	Network       Network
+	ClientRPC     ClientRPC
+	V2Stats       V2Stats
+	V3Stats       V3Stats
+	ClientV4Stats ClientV4Stats
+}
+
+// ServerRPCStats models all stats from /proc/net/rpc/nfsd.
+type ServerRPCStats struct {
+	ReplyCache     ReplyCache
+	FileHandles    FileHandles
+	InputOutput    InputOutput
+	Threads        Threads
+	ReadAheadCache ReadAheadCache
+	Network        Network
+	ServerRPC      ServerRPC
+	V2Stats        V2Stats
+	V3Stats        V3Stats
+	ServerV4Stats  ServerV4Stats
+	V4Ops          V4Ops
+}
--- a/vendor/github.com/prometheus/procfs/nfs/parse.go
+++ b/vendor/github.com/prometheus/procfs/nfs/parse.go
@ -0,0 +1,317 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
+package nfs
+
+import (
+	"fmt"
+)
+
+func parseReplyCache(v []uint64) (ReplyCache, error) {
+	if len(v) != 3 {
+		return ReplyCache{}, fmt.Errorf("invalid ReplyCache line %q", v)
+	}
+
+	return ReplyCache{
+		Hits:    v[0],
+		Misses:  v[1],
+		NoCache: v[2],
+	}, nil
+}
+
+func parseFileHandles(v []uint64) (FileHandles, error) {
+	if len(v) != 5 {
+		return FileHandles{}, fmt.Errorf("invalid FileHandles, line %q", v)
+	}
+
+	return FileHandles{
+		Stale:        v[0],
+		TotalLookups: v[1],
+		AnonLookups:  v[2],
+		DirNoCache:   v[3],
+		NoDirNoCache: v[4],
+	}, nil
+}
+
+func parseInputOutput(v []uint64) (InputOutput, error) {
+	if len(v) != 2 {
+		return InputOutput{}, fmt.Errorf("invalid InputOutput line %q", v)
+	}
+
+	return InputOutput{
+		Read:  v[0],
+		Write: v[1],
+	}, nil
+}
+
+func parseThreads(v []uint64) (Threads, error) {
+	if len(v) != 2 {
+		return Threads{}, fmt.Errorf("invalid Threads line %q", v)
+	}
+
+	return Threads{
+		Threads: v[0],
+		FullCnt: v[1],
+	}, nil
+}
+
+func parseReadAheadCache(v []uint64) (ReadAheadCache, error) {
+	if len(v) != 12 {
+		return ReadAheadCache{}, fmt.Errorf("invalid ReadAheadCache line %q", v)
+	}
+
+	return ReadAheadCache{
+		CacheSize:      v[0],
+		CacheHistogram: v[1:11],
+		NotFound:       v[11],
+	}, nil
+}
+
+func parseNetwork(v []uint64) (Network, error) {
+	if len(v) != 4 {
+		return Network{}, fmt.Errorf("invalid Network line %q", v)
+	}
+
+	return Network{
+		NetCount:   v[0],
+		UDPCount:   v[1],
+		TCPCount:   v[2],
+		TCPConnect: v[3],
+	}, nil
+}
+
+func parseServerRPC(v []uint64) (ServerRPC, error) {
+	if len(v) != 5 {
+		return ServerRPC{}, fmt.Errorf("invalid RPC line %q", v)
+	}
+
+	return ServerRPC{
+		RPCCount: v[0],
+		BadCnt:   v[1],
+		BadFmt:   v[2],
+		BadAuth:  v[3],
+		BadcInt:  v[4],
+	}, nil
+}
+
+func parseClientRPC(v []uint64) (ClientRPC, error) {
+	if len(v) != 3 {
+		return ClientRPC{}, fmt.Errorf("invalid RPC line %q", v)
+	}
+
+	return ClientRPC{
+		RPCCount:        v[0],
+		Retransmissions: v[1],
+		AuthRefreshes:   v[2],
+	}, nil
+}
+
+func parseV2Stats(v []uint64) (V2Stats, error) {
+	values := int(v[0])
+	if len(v[1:]) != values || values != 18 {
+		return V2Stats{}, fmt.Errorf("invalid V2Stats line %q", v)
+	}
+
+	return V2Stats{
+		Null:     v[1],
+		GetAttr:  v[2],
+		SetAttr:  v[3],
+		Root:     v[4],
+		Lookup:   v[5],
+		ReadLink: v[6],
+		Read:     v[7],
+		WrCache:  v[8],
+		Write:    v[9],
+		Create:   v[10],
+		Remove:   v[11],
+		Rename:   v[12],
+		Link:     v[13],
+		SymLink:  v[14],
+		MkDir:    v[15],
+		RmDir:    v[16],
+		ReadDir:  v[17],
+		FsStat:   v[18],
+	}, nil
+}
+
+func parseV3Stats(v []uint64) (V3Stats, error) {
+	values := int(v[0])
+	if len(v[1:]) != values || values != 22 {
+		return V3Stats{}, fmt.Errorf("invalid V3Stats line %q", v)
+	}
+
+	return V3Stats{
+		Null:        v[1],
+		GetAttr:     v[2],
+		SetAttr:     v[3],
+		Lookup:      v[4],
+		Access:      v[5],
+		ReadLink:    v[6],
+		Read:        v[7],
+		Write:       v[8],
+		Create:      v[9],
+		MkDir:       v[10],
+		SymLink:     v[11],
+		MkNod:       v[12],
+		Remove:      v[13],
+		RmDir:       v[14],
+		Rename:      v[15],
+		Link:        v[16],
+		ReadDir:     v[17],
+		ReadDirPlus: v[18],
+		FsStat:      v[19],
+		FsInfo:      v[20],
+		PathConf:    v[21],
+		Commit:      v[22],
+	}, nil
+}
+
+func parseClientV4Stats(v []uint64) (ClientV4Stats, error) {
+	values := int(v[0])
+	if len(v[1:]) != values {
+		return ClientV4Stats{}, fmt.Errorf("invalid ClientV4Stats line %q", v)
+	}
+
+	// This function currently supports mapping 59 NFS v4 client stats.  Older
+	// kernels may emit fewer stats, so we must detect this and pad out the
+	// values to match the expected slice size.
+	if values < 59 {
+		newValues := make([]uint64, 60)
+		copy(newValues, v)
+		v = newValues
+	}
+
+	return ClientV4Stats{
+		Null:               v[1],
+		Read:               v[2],
+		Write:              v[3],
+		Commit:             v[4],
+		Open:               v[5],
+		OpenConfirm:        v[6],
+		OpenNoattr:         v[7],
+		OpenDowngrade:      v[8],
+		Close:              v[9],
+		Setattr:            v[10],
+		FsInfo:             v[11],
+		Renew:              v[12],
+		SetClientId:        v[13],
+		SetClientIdConfirm: v[14],
+		Lock:               v[15],
+		Lockt:              v[16],
+		Locku:              v[17],
+		Access:             v[18],
+		Getattr:            v[19],
+		Lookup:             v[20],
+		LookupRoot:         v[21],
+		Remove:             v[22],
+		Rename:             v[23],
+		Link:               v[24],
+		Symlink:            v[25],
+		Create:             v[26],
+		Pathconf:           v[27],
+		StatFs:             v[28],
+		ReadLink:           v[29],
+		ReadDir:            v[30],
+		ServerCaps:         v[31],
+		DelegReturn:        v[32],
+		GetAcl:             v[33],
+		SetAcl:             v[34],
+		FsLocations:        v[35],
+		ReleaseLockowner:   v[36],
+		Secinfo:            v[37],
+		FsidPresent:        v[38],
+		ExchangeId:         v[39],
+		CreateSession:      v[40],
+		DestroySession:     v[41],
+		Sequence:           v[42],
+		GetLeaseTime:       v[43],
+		ReclaimComplete:    v[44],
+		LayoutGet:          v[45],
+		GetDeviceInfo:      v[46],
+		LayoutCommit:       v[47],
+		LayoutReturn:       v[48],
+		SecinfoNoName:      v[49],
+		TestStateId:        v[50],
+		FreeStateId:        v[51],
+		GetDeviceList:      v[52],
+		BindConnToSession:  v[53],
+		DestroyClientId:    v[54],
+		Seek:               v[55],
+		Allocate:           v[56],
+		DeAllocate:         v[57],
+		LayoutStats:        v[58],
+		Clone:              v[59],
+	}, nil
+}
+
+func parseServerV4Stats(v []uint64) (ServerV4Stats, error) {
+	values := int(v[0])
+	if len(v[1:]) != values || values != 2 {
+		return ServerV4Stats{}, fmt.Errorf("invalid V4Stats line %q", v)
+	}
+
+	return ServerV4Stats{
+		Null:     v[1],
+		Compound: v[2],
+	}, nil
+}
+
+func parseV4Ops(v []uint64) (V4Ops, error) {
+	values := int(v[0])
+	if len(v[1:]) != values || values < 39 {
+		return V4Ops{}, fmt.Errorf("invalid V4Ops line %q", v)
+	}
+
+	stats := V4Ops{
+		Op0Unused:    v[1],
+		Op1Unused:    v[2],
+		Op2Future:    v[3],
+		Access:       v[4],
+		Close:        v[5],
+		Commit:       v[6],
+		Create:       v[7],
+		DelegPurge:   v[8],
+		DelegReturn:  v[9],
+		GetAttr:      v[10],
+		GetFH:        v[11],
+		Link:         v[12],
+		Lock:         v[13],
+		Lockt:        v[14],
+		Locku:        v[15],
+		Lookup:       v[16],
+		LookupRoot:   v[17],
+		Nverify:      v[18],
+		Open:         v[19],
+		OpenAttr:     v[20],
+		OpenConfirm:  v[21],
+		OpenDgrd:     v[22],
+		PutFH:        v[23],
+		PutPubFH:     v[24],
+		PutRootFH:    v[25],
+		Read:         v[26],
+		ReadDir:      v[27],
+		ReadLink:     v[28],
+		Remove:       v[29],
+		Rename:       v[30],
+		Renew:        v[31],
+		RestoreFH:    v[32],
+		SaveFH:       v[33],
+		SecInfo:      v[34],
+		SetAttr:      v[35],
+		Verify:       v[36],
+		Write:        v[37],
+		RelLockOwner: v[38],
+	}
+
+	return stats, nil
+}
--- a/vendor/github.com/prometheus/procfs/nfs/parse_nfs.go
+++ b/vendor/github.com/prometheus/procfs/nfs/parse_nfs.go
@ -0,0 +1,67 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
+package nfs
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"strings"
+
+	"github.com/prometheus/procfs/internal/util"
+)
+
+// ParseClientRPCStats returns stats read from /proc/net/rpc/nfs
+func ParseClientRPCStats(r io.Reader) (*ClientRPCStats, error) {
+	stats := &ClientRPCStats{}
+
+	scanner := bufio.NewScanner(r)
+	for scanner.Scan() {
+		line := scanner.Text()
+		parts := strings.Fields(scanner.Text())
+		// require at least <key> <value>
+		if len(parts) < 2 {
+			return nil, fmt.Errorf("invalid NFS metric line %q", line)
+		}
+
+		values, err := util.ParseUint64s(parts[1:])
+		if err != nil {
+			return nil, fmt.Errorf("error parsing NFS metric line: %s", err)
+		}
+
+		switch metricLine := parts[0]; metricLine {
+		case "net":
+			stats.Network, err = parseNetwork(values)
+		case "rpc":
+			stats.ClientRPC, err = parseClientRPC(values)
+		case "proc2":
+			stats.V2Stats, err = parseV2Stats(values)
+		case "proc3":
+			stats.V3Stats, err = parseV3Stats(values)
+		case "proc4":
+			stats.ClientV4Stats, err = parseClientV4Stats(values)
+		default:
+			return nil, fmt.Errorf("unknown NFS metric line %q", metricLine)
+		}
+		if err != nil {
+			return nil, fmt.Errorf("errors parsing NFS metric line: %s", err)
+		}
+	}
+
+	if err := scanner.Err(); err != nil {
+		return nil, fmt.Errorf("error scanning NFS file: %s", err)
+	}
+
+	return stats, nil
+}
--- a/vendor/github.com/prometheus/procfs/nfs/parse_nfs_test.go
+++ b/vendor/github.com/prometheus/procfs/nfs/parse_nfs_test.go
@ -0,0 +1,305 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
+package nfs_test
+
+import (
+	"reflect"
+	"strings"
+	"testing"
+
+	"github.com/prometheus/procfs/nfs"
+)
+
+func TestNewNFSClientRPCStats(t *testing.T) {
+	tests := []struct {
+		name    string
+		content string
+		stats   *nfs.ClientRPCStats
+		invalid bool
+	}{
+		{
+			name:    "invalid file",
+			content: "invalid",
+			invalid: true,
+		}, {
+			name: "good old kernel version file",
+			content: `net 70 70 69 45
+rpc 1218785755 374636 1218815394
+proc2 18 16 57 74 52 71 73 45 86 0 52 83 61 17 53 50 23 70 82
+proc3 22 0 1061909262 48906 4077635 117661341 5 29391916 2570425 2993289 590 0 0 7815 15 1130 0 3983 92385 13332 2 1 23729
+proc4 48 98 51 54 83 85 23 24 1 28 73 68 83 12 84 39 68 59 58 88 29 74 69 96 21 84 15 53 86 54 66 56 97 36 49 32 85 81 11 58 32 67 13 28 35 90 1 26 1337
+`,
+			stats: &nfs.ClientRPCStats{
+				Network: nfs.Network{
+					NetCount:   70,
+					UDPCount:   70,
+					TCPCount:   69,
+					TCPConnect: 45,
+				},
+				ClientRPC: nfs.ClientRPC{
+					RPCCount:        1218785755,
+					Retransmissions: 374636,
+					AuthRefreshes:   1218815394,
+				},
+				V2Stats: nfs.V2Stats{
+					Null:     16,
+					GetAttr:  57,
+					SetAttr:  74,
+					Root:     52,
+					Lookup:   71,
+					ReadLink: 73,
+					Read:     45,
+					WrCache:  86,
+					Write:    0,
+					Create:   52,
+					Remove:   83,
+					Rename:   61,
+					Link:     17,
+					SymLink:  53,
+					MkDir:    50,
+					RmDir:    23,
+					ReadDir:  70,
+					FsStat:   82,
+				},
+				V3Stats: nfs.V3Stats{
+					Null:        0,
+					GetAttr:     1061909262,
+					SetAttr:     48906,
+					Lookup:      4077635,
+					Access:      117661341,
+					ReadLink:    5,
+					Read:        29391916,
+					Write:       2570425,
+					Create:      2993289,
+					MkDir:       590,
+					SymLink:     0,
+					MkNod:       0,
+					Remove:      7815,
+					RmDir:       15,
+					Rename:      1130,
+					Link:        0,
+					ReadDir:     3983,
+					ReadDirPlus: 92385,
+					FsStat:      13332,
+					FsInfo:      2,
+					PathConf:    1,
+					Commit:      23729},
+				ClientV4Stats: nfs.ClientV4Stats{
+					Null:               98,
+					Read:               51,
+					Write:              54,
+					Commit:             83,
+					Open:               85,
+					OpenConfirm:        23,
+					OpenNoattr:         24,
+					OpenDowngrade:      1,
+					Close:              28,
+					Setattr:            73,
+					FsInfo:             68,
+					Renew:              83,
+					SetClientId:        12,
+					SetClientIdConfirm: 84,
+					Lock:               39,
+					Lockt:              68,
+					Locku:              59,
+					Access:             58,
+					Getattr:            88,
+					Lookup:             29,
+					LookupRoot:         74,
+					Remove:             69,
+					Rename:             96,
+					Link:               21,
+					Symlink:            84,
+					Create:             15,
+					Pathconf:           53,
+					StatFs:             86,
+					ReadLink:           54,
+					ReadDir:            66,
+					ServerCaps:         56,
+					DelegReturn:        97,
+					GetAcl:             36,
+					SetAcl:             49,
+					FsLocations:        32,
+					ReleaseLockowner:   85,
+					Secinfo:            81,
+					FsidPresent:        11,
+					ExchangeId:         58,
+					CreateSession:      32,
+					DestroySession:     67,
+					Sequence:           13,
+					GetLeaseTime:       28,
+					ReclaimComplete:    35,
+					LayoutGet:          90,
+					GetDeviceInfo:      1,
+					LayoutCommit:       26,
+					LayoutReturn:       1337,
+					SecinfoNoName:      0,
+					TestStateId:        0,
+					FreeStateId:        0,
+					GetDeviceList:      0,
+					BindConnToSession:  0,
+					DestroyClientId:    0,
+					Seek:               0,
+					Allocate:           0,
+					DeAllocate:         0,
+					LayoutStats:        0,
+					Clone:              0,
+				},
+			},
+		}, {
+			name: "good file",
+			content: `net 18628 0 18628 6
+rpc 4329785 0 4338291
+proc2 18 2 69 0 0 4410 0 0 0 0 0 0 0 0 0 0 0 99 2
+proc3 22 1 4084749 29200 94754 32580 186 47747 7981 8639 0 6356 0 6962 0 7958 0 0 241 4 4 2 39
+proc4 61 1 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+`,
+			stats: &nfs.ClientRPCStats{
+				Network: nfs.Network{
+					NetCount:   18628,
+					UDPCount:   0,
+					TCPCount:   18628,
+					TCPConnect: 6,
+				},
+				ClientRPC: nfs.ClientRPC{
+					RPCCount:        4329785,
+					Retransmissions: 0,
+					AuthRefreshes:   4338291,
+				},
+				V2Stats: nfs.V2Stats{
+					Null:     2,
+					GetAttr:  69,
+					SetAttr:  0,
+					Root:     0,
+					Lookup:   4410,
+					ReadLink: 0,
+					Read:     0,
+					WrCache:  0,
+					Write:    0,
+					Create:   0,
+					Remove:   0,
+					Rename:   0,
+					Link:     0,
+					SymLink:  0,
+					MkDir:    0,
+					RmDir:    0,
+					ReadDir:  99,
+					FsStat:   2,
+				},
+				V3Stats: nfs.V3Stats{
+					Null:        1,
+					GetAttr:     4084749,
+					SetAttr:     29200,
+					Lookup:      94754,
+					Access:      32580,
+					ReadLink:    186,
+					Read:        47747,
+					Write:       7981,
+					Create:      8639,
+					MkDir:       0,
+					SymLink:     6356,
+					MkNod:       0,
+					Remove:      6962,
+					RmDir:       0,
+					Rename:      7958,
+					Link:        0,
+					ReadDir:     0,
+					ReadDirPlus: 241,
+					FsStat:      4,
+					FsInfo:      4,
+					PathConf:    2,
+					Commit:      39,
+				},
+				ClientV4Stats: nfs.ClientV4Stats{
+					Null:               1,
+					Read:               0,
+					Write:              0,
+					Commit:             0,
+					Open:               0,
+					OpenConfirm:        0,
+					OpenNoattr:         0,
+					OpenDowngrade:      0,
+					Close:              0,
+					Setattr:            0,
+					FsInfo:             0,
+					Renew:              0,
+					SetClientId:        1,
+					SetClientIdConfirm: 1,
+					Lock:               0,
+					Lockt:              0,
+					Locku:              0,
+					Access:             0,
+					Getattr:            0,
+					Lookup:             0,
+					LookupRoot:         0,
+					Remove:             2,
+					Rename:             0,
+					Link:               0,
+					Symlink:            0,
+					Create:             0,
+					Pathconf:           0,
+					StatFs:             0,
+					ReadLink:           0,
+					ReadDir:            0,
+					ServerCaps:         0,
+					DelegReturn:        0,
+					GetAcl:             0,
+					SetAcl:             0,
+					FsLocations:        0,
+					ReleaseLockowner:   0,
+					Secinfo:            0,
+					FsidPresent:        0,
+					ExchangeId:         0,
+					CreateSession:      0,
+					DestroySession:     0,
+					Sequence:           0,
+					GetLeaseTime:       0,
+					ReclaimComplete:    0,
+					LayoutGet:          0,
+					GetDeviceInfo:      0,
+					LayoutCommit:       0,
+					LayoutReturn:       0,
+					SecinfoNoName:      0,
+					TestStateId:        0,
+					FreeStateId:        0,
+					GetDeviceList:      0,
+					BindConnToSession:  0,
+					DestroyClientId:    0,
+					Seek:               0,
+					Allocate:           0,
+					DeAllocate:         0,
+					LayoutStats:        0,
+					Clone:              0,
+				},
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			stats, err := nfs.ParseClientRPCStats(strings.NewReader(tt.content))
+
+			if tt.invalid && err == nil {
+				t.Fatal("expected an error, but none occurred")
+			}
+			if !tt.invalid && err != nil {
+				t.Fatalf("unexpected error: %v", err)
+			}
+
+			if want, have := tt.stats, stats; !reflect.DeepEqual(want, have) {
+				t.Fatalf("unexpected NFS stats:\nwant:\n%v\nhave:\n%v", want, have)
+			}
+		})
+	}
+}
--- a/vendor/github.com/prometheus/procfs/nfs/parse_nfsd.go
+++ b/vendor/github.com/prometheus/procfs/nfs/parse_nfsd.go
@ -0,0 +1,89 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
+package nfs
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"strings"
+
+	"github.com/prometheus/procfs/internal/util"
+)
+
+// ParseServerRPCStats returns stats read from /proc/net/rpc/nfsd
+func ParseServerRPCStats(r io.Reader) (*ServerRPCStats, error) {
+	stats := &ServerRPCStats{}
+
+	scanner := bufio.NewScanner(r)
+	for scanner.Scan() {
+		line := scanner.Text()
+		parts := strings.Fields(scanner.Text())
+		// require at least <key> <value>
+		if len(parts) < 2 {
+			return nil, fmt.Errorf("invalid NFSd metric line %q", line)
+		}
+		label := parts[0]
+
+		var values []uint64
+		var err error
+		if label == "th" {
+			if len(parts) < 3 {
+				return nil, fmt.Errorf("invalid NFSd th metric line %q", line)
+			}
+			values, err = util.ParseUint64s(parts[1:3])
+		} else {
+			values, err = util.ParseUint64s(parts[1:])
+		}
+		if err != nil {
+			return nil, fmt.Errorf("error parsing NFSd metric line: %s", err)
+		}
+
+		switch metricLine := parts[0]; metricLine {
+		case "rc":
+			stats.ReplyCache, err = parseReplyCache(values)
+		case "fh":
+			stats.FileHandles, err = parseFileHandles(values)
+		case "io":
+			stats.InputOutput, err = parseInputOutput(values)
+		case "th":
+			stats.Threads, err = parseThreads(values)
+		case "ra":
+			stats.ReadAheadCache, err = parseReadAheadCache(values)
+		case "net":
+			stats.Network, err = parseNetwork(values)
+		case "rpc":
+			stats.ServerRPC, err = parseServerRPC(values)
+		case "proc2":
+			stats.V2Stats, err = parseV2Stats(values)
+		case "proc3":
+			stats.V3Stats, err = parseV3Stats(values)
+		case "proc4":
+			stats.ServerV4Stats, err = parseServerV4Stats(values)
+		case "proc4ops":
+			stats.V4Ops, err = parseV4Ops(values)
+		default:
+			return nil, fmt.Errorf("unknown NFSd metric line %q", metricLine)
+		}
+		if err != nil {
+			return nil, fmt.Errorf("errors parsing NFSd metric line: %s", err)
+		}
+	}
+
+	if err := scanner.Err(); err != nil {
+		return nil, fmt.Errorf("error scanning NFSd file: %s", err)
+	}
+
+	return stats, nil
+}
--- a/vendor/github.com/prometheus/procfs/nfs/parse_nfsd_test.go
+++ b/vendor/github.com/prometheus/procfs/nfs/parse_nfsd_test.go
@ -0,0 +1,196 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
+package nfs_test
+
+import (
+	"reflect"
+	"strings"
+	"testing"
+
+	"github.com/prometheus/procfs/nfs"
+)
+
+func TestNewNFSdServerRPCStats(t *testing.T) {
+	tests := []struct {
+		name    string
+		content string
+		stats   *nfs.ServerRPCStats
+		invalid bool
+	}{
+		{
+			name:    "invalid file",
+			content: "invalid",
+			invalid: true,
+		}, {
+			name: "good file",
+			content: `rc 0 6 18622
+fh 0 0 0 0 0
+io 157286400 0
+th 8 0 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
+ra 32 0 0 0 0 0 0 0 0 0 0 0
+net 18628 0 18628 6
+rpc 18628 0 0 0 0
+proc2 18 2 69 0 0 4410 0 0 0 0 0 0 0 0 0 0 0 99 2
+proc3 22 2 112 0 2719 111 0 0 0 0 0 0 0 0 0 0 0 27 216 0 2 1 0
+proc4 2 2 10853
+proc4ops 72 0 0 0 1098 2 0 0 0 0 8179 5896 0 0 0 0 5900 0 0 2 0 2 0 9609 0 2 150 1272 0 0 0 1236 0 0 0 0 3 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+`,
+			stats: &nfs.ServerRPCStats{
+				ReplyCache: nfs.ReplyCache{
+					Hits:    0,
+					Misses:  6,
+					NoCache: 18622,
+				},
+				FileHandles: nfs.FileHandles{
+					Stale:        0,
+					TotalLookups: 0,
+					AnonLookups:  0,
+					DirNoCache:   0,
+					NoDirNoCache: 0,
+				},
+				InputOutput: nfs.InputOutput{
+					Read:  157286400,
+					Write: 0,
+				},
+				Threads: nfs.Threads{
+					Threads: 8,
+					FullCnt: 0,
+				},
+				ReadAheadCache: nfs.ReadAheadCache{
+					CacheSize:      32,
+					CacheHistogram: []uint64{0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
+					NotFound:       0,
+				},
+				Network: nfs.Network{
+					NetCount:   18628,
+					UDPCount:   0,
+					TCPCount:   18628,
+					TCPConnect: 6,
+				},
+				ServerRPC: nfs.ServerRPC{
+					RPCCount: 18628,
+					BadCnt:   0,
+					BadFmt:   0,
+					BadAuth:  0,
+					BadcInt:  0,
+				},
+				V2Stats: nfs.V2Stats{
+					Null:     2,
+					GetAttr:  69,
+					SetAttr:  0,
+					Root:     0,
+					Lookup:   4410,
+					ReadLink: 0,
+					Read:     0,
+					WrCache:  0,
+					Write:    0,
+					Create:   0,
+					Remove:   0,
+					Rename:   0,
+					Link:     0,
+					SymLink:  0,
+					MkDir:    0,
+					RmDir:    0,
+					ReadDir:  99,
+					FsStat:   2,
+				},
+				V3Stats: nfs.V3Stats{
+					Null:        2,
+					GetAttr:     112,
+					SetAttr:     0,
+					Lookup:      2719,
+					Access:      111,
+					ReadLink:    0,
+					Read:        0,
+					Write:       0,
+					Create:      0,
+					MkDir:       0,
+					SymLink:     0,
+					MkNod:       0,
+					Remove:      0,
+					RmDir:       0,
+					Rename:      0,
+					Link:        0,
+					ReadDir:     27,
+					ReadDirPlus: 216,
+					FsStat:      0,
+					FsInfo:      2,
+					PathConf:    1,
+					Commit:      0,
+				},
+				ServerV4Stats: nfs.ServerV4Stats{
+					Null:     2,
+					Compound: 10853,
+				},
+				V4Ops: nfs.V4Ops{
+					Op0Unused:    0,
+					Op1Unused:    0,
+					Op2Future:    0,
+					Access:       1098,
+					Close:        2,
+					Commit:       0,
+					Create:       0,
+					DelegPurge:   0,
+					DelegReturn:  0,
+					GetAttr:      8179,
+					GetFH:        5896,
+					Link:         0,
+					Lock:         0,
+					Lockt:        0,
+					Locku:        0,
+					Lookup:       5900,
+					LookupRoot:   0,
+					Nverify:      0,
+					Open:         2,
+					OpenAttr:     0,
+					OpenConfirm:  2,
+					OpenDgrd:     0,
+					PutFH:        9609,
+					PutPubFH:     0,
+					PutRootFH:    2,
+					Read:         150,
+					ReadDir:      1272,
+					ReadLink:     0,
+					Remove:       0,
+					Rename:       0,
+					Renew:        1236,
+					RestoreFH:    0,
+					SaveFH:       0,
+					SecInfo:      0,
+					SetAttr:      0,
+					Verify:       3,
+					Write:        3,
+					RelLockOwner: 0,
+				},
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			stats, err := nfs.ParseServerRPCStats(strings.NewReader(tt.content))
+
+			if tt.invalid && err == nil {
+				t.Fatal("expected an error, but none occurred")
+			}
+			if !tt.invalid && err != nil {
+				t.Fatalf("unexpected error: %v", err)
+			}
+
+			if want, have := tt.stats, stats; !reflect.DeepEqual(want, have) {
+				t.Fatalf("unexpected NFS stats:\nwant:\n%v\nhave:\n%v", want, have)
+			}
+		})
+	}
+}
--- a/vendor/github.com/prometheus/procfs/proc.go
+++ b/vendor/github.com/prometheus/procfs/proc.go
@ -1,6 +1,20 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
 package procfs

 import (
+	"bytes"
 	"fmt"
 	"io/ioutil"
 	"os"
@ -113,7 +127,7 @@ func (p Proc) CmdLine() ([]string, error) {
 		return []string{}, nil
 	}

-	return strings.Split(string(data[:len(data)-1]), string(byte(0))), nil
+	return strings.Split(string(bytes.TrimRight(data, string("\x00"))), string(byte(0))), nil
 }

 // Comm returns the command name of a process.
--- a/vendor/github.com/prometheus/procfs/proc_io.go
+++ b/vendor/github.com/prometheus/procfs/proc_io.go
@ -1,3 +1,16 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
 package procfs

 import (
@ -47,9 +60,6 @@ func (p Proc) NewIO() (ProcIO, error) {

 	_, err = fmt.Sscanf(string(data), ioFormat, &pio.RChar, &pio.WChar, &pio.SyscR,
 		&pio.SyscW, &pio.ReadBytes, &pio.WriteBytes, &pio.CancelledWriteBytes)
-	if err != nil {
-		return pio, err
-	}

-	return pio, nil
+	return pio, err
 }
--- a/vendor/github.com/prometheus/procfs/proc_io_test.go
+++ b/vendor/github.com/prometheus/procfs/proc_io_test.go
@ -1,3 +1,16 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
 package procfs

 import "testing"
--- a/vendor/github.com/prometheus/procfs/proc_limits.go
+++ b/vendor/github.com/prometheus/procfs/proc_limits.go
@ -1,3 +1,16 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
 package procfs

 import (
--- a/vendor/github.com/prometheus/procfs/proc_limits_test.go
+++ b/vendor/github.com/prometheus/procfs/proc_limits_test.go
@ -1,3 +1,16 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
 package procfs

 import "testing"
--- a/vendor/github.com/prometheus/procfs/proc_ns.go
+++ b/vendor/github.com/prometheus/procfs/proc_ns.go
@ -0,0 +1,68 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
+package procfs
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+)
+
+// Namespace represents a single namespace of a process.
+type Namespace struct {
+	Type  string // Namespace type.
+	Inode uint32 // Inode number of the namespace. If two processes are in the same namespace their inodes will match.
+}
+
+// Namespaces contains all of the namespaces that the process is contained in.
+type Namespaces map[string]Namespace
+
+// NewNamespaces reads from /proc/[pid/ns/* to get the namespaces of which the
+// process is a member.
+func (p Proc) NewNamespaces() (Namespaces, error) {
+	d, err := os.Open(p.path("ns"))
+	if err != nil {
+		return nil, err
+	}
+	defer d.Close()
+
+	names, err := d.Readdirnames(-1)
+	if err != nil {
+		return nil, fmt.Errorf("failed to read contents of ns dir: %v", err)
+	}
+
+	ns := make(Namespaces, len(names))
+	for _, name := range names {
+		target, err := os.Readlink(p.path("ns", name))
+		if err != nil {
+			return nil, err
+		}
+
+		fields := strings.SplitN(target, ":", 2)
+		if len(fields) != 2 {
+			return nil, fmt.Errorf("failed to parse namespace type and inode from '%v'", target)
+		}
+
+		typ := fields[0]
+		inode, err := strconv.ParseUint(strings.Trim(fields[1], "[]"), 10, 32)
+		if err != nil {
+			return nil, fmt.Errorf("failed to parse inode from '%v': %v", fields[1], err)
+		}
+
+		ns[name] = Namespace{typ, uint32(inode)}
+	}
+
+	return ns, nil
+}
--- a/vendor/github.com/prometheus/procfs/proc_ns_test.go
+++ b/vendor/github.com/prometheus/procfs/proc_ns_test.go
@ -0,0 +1,44 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
+package procfs
+
+import (
+	"testing"
+)
+
+func TestNewNamespaces(t *testing.T) {
+	p, err := FS("fixtures").NewProc(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	namespaces, err := p.NewNamespaces()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	expectedNamespaces := map[string]Namespace{
+		"mnt": {"mnt", 4026531840},
+		"net": {"net", 4026531993},
+	}
+
+	if want, have := len(expectedNamespaces), len(namespaces); want != have {
+		t.Errorf("want %d parsed namespaces, have %d", want, have)
+	}
+	for _, ns := range namespaces {
+		if want, have := expectedNamespaces[ns.Type], ns; want != have {
+			t.Errorf("%s: want %v, have %v", ns.Type, want, have)
+		}
+	}
+}
--- a/Show More
+++ b/Show More
				`@ -1 +0,0 @@`
				`26231 (vim) R 5392 7446 5392 34835 7446 4218880 32533 309516 26 82 1677 44 158 99 20 0 1 0 82375 56274944 1981 18446744073709551615 4194304 6294284 140736914091744 140736914087944 139965136429984 0 0 12288 1870679807 0 0 0 17 0 0 0 31 0 0 8391624 8481048 16420864 140736914093252 140736914093279 140736914093279 140736914096107 0`
				`@ -1 +0,0 @@`
				`33 (ata_sff) S 2 0 0 0 -1 69238880 0 0 0 0 0 0 0 0 0 -20 1 0 5 0 0 18446744073709551615 0 0 0 0 0 0 0 2147483647 0 18446744073709551615 0 0 17 1 0 0 0 0 0 0 0 0 0 0 0 0 0`