Fnlb was moved to its own repo: fnproject/lb (#702)

* Fnlb was moved to its own repo: fnproject/lb

* Clean up fnlb leftovers

* Newer deps

vendor/github.com/prometheus/client_model/Makefile

@@ -39,6 +39,7 @@ src/main/java/io/prometheus/client/Metrics.java: metrics.proto
 python: python/prometheus/client/model/metrics_pb2.py
 
 python/prometheus/client/model/metrics_pb2.py: metrics.proto
+	mkdir -p python/prometheus/client/model
 	protoc $< --python_out=python/prometheus/client/model
 
 ruby:

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")
 }

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)
 	}

vendor/github.com/prometheus/common/log/log.go

@@ -56,11 +56,11 @@ func (s *loggerSettings) apply(ctx *kingpin.ParseContext) error {
 // To use the default Kingpin application, call AddFlags(kingpin.CommandLine)
 func AddFlags(a *kingpin.Application) {
 	s := loggerSettings{}
-	kingpin.Flag("log.level", "Only log messages with the given severity or above. Valid levels: [debug, info, warn, error, fatal]").
+	a.Flag("log.level", "Only log messages with the given severity or above. Valid levels: [debug, info, warn, error, fatal]").
 		Default(origLogger.Level.String()).
 		StringVar(&s.level)
 	defaultFormat := url.URL{Scheme: "logger", Opaque: "stderr"}
-	kingpin.Flag("log.format", `Set the log target and format. Example: "logger:syslog?appname=bob&local=7" or "logger:stdout?json=true"`).
+	a.Flag("log.format", `Set the log target and format. Example: "logger:syslog?appname=bob&local=7" or "logger:stdout?json=true"`).
 		Default(defaultFormat.String()).
 		StringVar(&s.format)
 	a.Action(s.apply)
@@ -345,6 +345,11 @@ func Fatalf(format string, args ...interface{}) {
 	baseLogger.sourced().Fatalf(format, args...)
 }
 
+// AddHook adds hook to Prometheus' original logger.
+func AddHook(hook logrus.Hook) {
+	origLogger.Hooks.Add(hook)
+}
+
 type errorLogWriter struct{}
 
 func (errorLogWriter) Write(b []byte) (int, error) {

vendor/github.com/prometheus/common/model/time.go

@@ -214,6 +214,9 @@ func (d Duration) String() string {
 		ms   = int64(time.Duration(d) / time.Millisecond)
 		unit = "ms"
 	)
+	if ms == 0 {
+		return "0s"
+	}
 	factors := map[string]int64{
 		"y":  1000 * 60 * 60 * 24 * 365,
 		"w":  1000 * 60 * 60 * 24 * 7,

vendor/github.com/prometheus/common/model/time_test.go

@@ -91,6 +91,9 @@ func TestParseDuration(t *testing.T) {
 		out time.Duration
 	}{
 		{
+			in:  "0s",
+			out: 0,
+		}, {
 			in:  "324ms",
 			out: 324 * time.Millisecond,
 		}, {

vendor/github.com/prometheus/procfs/.travis.yml

@@ -1,5 +1,9 @@
 sudo: false
+
 language: go
+
 go:
-    - 1.6.4
-    - 1.7.4
+- 1.9.x
+- 1.x
+
+go_import_path: github.com/prometheus/procfs

vendor/github.com/prometheus/procfs/Makefile

@@ -1,6 +1,18 @@
-ci:
+ci: fmt lint test
+
+fmt:
 	! gofmt -l *.go | read nothing
 	go vet
-	go test -v ./...
+
+lint:
 	go get github.com/golang/lint/golint
 	golint *.go
+
+test: sysfs/fixtures/.unpacked
+	go test -v ./...
+
+sysfs/fixtures/.unpacked: sysfs/fixtures.ttar
+	./ttar -C sysfs -x -f sysfs/fixtures.ttar
+	touch $@
+
+.PHONY: fmt lint test ci

vendor/github.com/prometheus/procfs/bcache/bcache.go

@@ -0,0 +1,84 @@
+// Copyright 2017 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 bcache provides access to statistics exposed by the bcache (Linux
+// block cache).
+package bcache
+
+// Stats contains bcache runtime statistics, parsed from /sys/fs/bcache/.
+//
+// The names and meanings of each statistic were taken from bcache.txt and
+// files in drivers/md/bcache in the Linux kernel source. Counters are uint64
+// (in-kernel counters are mostly unsigned long).
+type Stats struct {
+	// The name of the bcache used to source these statistics.
+	Name   string
+	Bcache BcacheStats
+	Bdevs  []BdevStats
+	Caches []CacheStats
+}
+
+// BcacheStats contains statistics tied to a bcache ID.
+type BcacheStats struct {
+	AverageKeySize        uint64
+	BtreeCacheSize        uint64
+	CacheAvailablePercent uint64
+	Congested             uint64
+	RootUsagePercent      uint64
+	TreeDepth             uint64
+	Internal              InternalStats
+	FiveMin               PeriodStats
+	Total                 PeriodStats
+}
+
+// BdevStats contains statistics for one backing device.
+type BdevStats struct {
+	Name      string
+	DirtyData uint64
+	FiveMin   PeriodStats
+	Total     PeriodStats
+}
+
+// CacheStats contains statistics for one cache device.
+type CacheStats struct {
+	Name            string
+	IOErrors        uint64
+	MetadataWritten uint64
+	Written         uint64
+	Priority        PriorityStats
+}
+
+// PriorityStats contains statistics from the priority_stats file.
+type PriorityStats struct {
+	UnusedPercent   uint64
+	MetadataPercent uint64
+}
+
+// InternalStats contains internal bcache statistics.
+type InternalStats struct {
+	ActiveJournalEntries                uint64
+	BtreeNodes                          uint64
+	BtreeReadAverageDurationNanoSeconds uint64
+	CacheReadRaces                      uint64
+}
+
+// PeriodStats contains statistics for a time period (5 min or total).
+type PeriodStats struct {
+	Bypassed            uint64
+	CacheBypassHits     uint64
+	CacheBypassMisses   uint64
+	CacheHits           uint64
+	CacheMissCollisions uint64
+	CacheMisses         uint64
+	CacheReadaheads     uint64
+}

vendor/github.com/prometheus/procfs/bcache/get.go

@@ -0,0 +1,330 @@
+// Copyright 2017 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 bcache
+
+import (
+	"bufio"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path"
+	"path/filepath"
+	"strconv"
+	"strings"
+)
+
+// ParsePseudoFloat parses the peculiar format produced by bcache's bch_hprint.
+func parsePseudoFloat(str string) (float64, error) {
+	ss := strings.Split(str, ".")
+
+	intPart, err := strconv.ParseFloat(ss[0], 64)
+	if err != nil {
+		return 0, err
+	}
+
+	if len(ss) == 1 {
+		// Pure integers are fine.
+		return intPart, nil
+	}
+	fracPart, err := strconv.ParseFloat(ss[1], 64)
+	if err != nil {
+		return 0, err
+	}
+	// fracPart is a number between 0 and 1023 divided by 100; it is off
+	// by a small amount. Unexpected bumps in time lines may occur because
+	// for bch_hprint .1 != .10 and .10 > .9 (at least up to Linux
+	// v4.12-rc3).
+
+	// Restore the proper order:
+	fracPart = fracPart / 10.24
+	return intPart + fracPart, nil
+}
+
+// Dehumanize converts a human-readable byte slice into a uint64.
+func dehumanize(hbytes []byte) (uint64, error) {
+	ll := len(hbytes)
+	if ll == 0 {
+		return 0, fmt.Errorf("zero-length reply")
+	}
+	lastByte := hbytes[ll-1]
+	mul := float64(1)
+	var (
+		mant float64
+		err  error
+	)
+	// If lastByte is beyond the range of ASCII digits, it must be a
+	// multiplier.
+	if lastByte > 57 {
+		// Remove multiplier from slice.
+		hbytes = hbytes[:len(hbytes)-1]
+
+		const (
+			_ = 1 << (10 * iota)
+			KiB
+			MiB
+			GiB
+			TiB
+			PiB
+			EiB
+			ZiB
+			YiB
+		)
+
+		multipliers := map[rune]float64{
+			// Source for conversion rules:
+			// linux-kernel/drivers/md/bcache/util.c:bch_hprint()
+			'k': KiB,
+			'M': MiB,
+			'G': GiB,
+			'T': TiB,
+			'P': PiB,
+			'E': EiB,
+			'Z': ZiB,
+			'Y': YiB,
+		}
+		mul = multipliers[rune(lastByte)]
+		mant, err = parsePseudoFloat(string(hbytes))
+		if err != nil {
+			return 0, err
+		}
+	} else {
+		// Not humanized by bch_hprint
+		mant, err = strconv.ParseFloat(string(hbytes), 64)
+		if err != nil {
+			return 0, err
+		}
+	}
+	res := uint64(mant * mul)
+	return res, nil
+}
+
+type parser struct {
+	uuidPath   string
+	subDir     string
+	currentDir string
+	err        error
+}
+
+func (p *parser) setSubDir(pathElements ...string) {
+	p.subDir = path.Join(pathElements...)
+	p.currentDir = path.Join(p.uuidPath, p.subDir)
+}
+
+func (p *parser) readValue(fileName string) uint64 {
+	if p.err != nil {
+		return 0
+	}
+	path := path.Join(p.currentDir, fileName)
+	byt, err := ioutil.ReadFile(path)
+	if err != nil {
+		p.err = fmt.Errorf("failed to read: %s", path)
+		return 0
+	}
+	// Remove trailing newline.
+	byt = byt[:len(byt)-1]
+	res, err := dehumanize(byt)
+	p.err = err
+	return res
+}
+
+// ParsePriorityStats parses lines from the priority_stats file.
+func parsePriorityStats(line string, ps *PriorityStats) error {
+	var (
+		value uint64
+		err   error
+	)
+	switch {
+	case strings.HasPrefix(line, "Unused:"):
+		fields := strings.Fields(line)
+		rawValue := fields[len(fields)-1]
+		valueStr := strings.TrimSuffix(rawValue, "%")
+		value, err = strconv.ParseUint(valueStr, 10, 64)
+		if err != nil {
+			return err
+		}
+		ps.UnusedPercent = value
+	case strings.HasPrefix(line, "Metadata:"):
+		fields := strings.Fields(line)
+		rawValue := fields[len(fields)-1]
+		valueStr := strings.TrimSuffix(rawValue, "%")
+		value, err = strconv.ParseUint(valueStr, 10, 64)
+		if err != nil {
+			return err
+		}
+		ps.MetadataPercent = value
+	}
+	return nil
+}
+
+func (p *parser) getPriorityStats() PriorityStats {
+	var res PriorityStats
+
+	if p.err != nil {
+		return res
+	}
+
+	path := path.Join(p.currentDir, "priority_stats")
+
+	file, err := os.Open(path)
+	if err != nil {
+		p.err = fmt.Errorf("failed to read: %s", path)
+		return res
+	}
+	defer file.Close()
+
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		err = parsePriorityStats(scanner.Text(), &res)
+		if err != nil {
+			p.err = fmt.Errorf("failed to parse: %s (%s)", path, err)
+			return res
+		}
+	}
+	if err := scanner.Err(); err != nil {
+		p.err = fmt.Errorf("failed to parse: %s (%s)", path, err)
+		return res
+	}
+	return res
+}
+
+// GetStats collects from sysfs files data tied to one bcache ID.
+func GetStats(uuidPath string) (*Stats, error) {
+	var bs Stats
+
+	par := parser{uuidPath: uuidPath}
+
+	// bcache stats
+
+	// dir <uuidPath>
+	par.setSubDir("")
+	bs.Bcache.AverageKeySize = par.readValue("average_key_size")
+	bs.Bcache.BtreeCacheSize = par.readValue("btree_cache_size")
+	bs.Bcache.CacheAvailablePercent = par.readValue("cache_available_percent")
+	bs.Bcache.Congested = par.readValue("congested")
+	bs.Bcache.RootUsagePercent = par.readValue("root_usage_percent")
+	bs.Bcache.TreeDepth = par.readValue("tree_depth")
+
+	// bcache stats (internal)
+
+	// dir <uuidPath>/internal
+	par.setSubDir("internal")
+	bs.Bcache.Internal.ActiveJournalEntries = par.readValue("active_journal_entries")
+	bs.Bcache.Internal.BtreeNodes = par.readValue("btree_nodes")
+	bs.Bcache.Internal.BtreeReadAverageDurationNanoSeconds = par.readValue("btree_read_average_duration_us")
+	bs.Bcache.Internal.CacheReadRaces = par.readValue("cache_read_races")
+
+	// bcache stats (period)
+
+	// dir <uuidPath>/stats_five_minute
+	par.setSubDir("stats_five_minute")
+	bs.Bcache.FiveMin.Bypassed = par.readValue("bypassed")
+	bs.Bcache.FiveMin.CacheHits = par.readValue("cache_hits")
+
+	bs.Bcache.FiveMin.Bypassed = par.readValue("bypassed")
+	bs.Bcache.FiveMin.CacheBypassHits = par.readValue("cache_bypass_hits")
+	bs.Bcache.FiveMin.CacheBypassMisses = par.readValue("cache_bypass_misses")
+	bs.Bcache.FiveMin.CacheHits = par.readValue("cache_hits")
+	bs.Bcache.FiveMin.CacheMissCollisions = par.readValue("cache_miss_collisions")
+	bs.Bcache.FiveMin.CacheMisses = par.readValue("cache_misses")
+	bs.Bcache.FiveMin.CacheReadaheads = par.readValue("cache_readaheads")
+
+	// dir <uuidPath>/stats_total
+	par.setSubDir("stats_total")
+	bs.Bcache.Total.Bypassed = par.readValue("bypassed")
+	bs.Bcache.Total.CacheHits = par.readValue("cache_hits")
+
+	bs.Bcache.Total.Bypassed = par.readValue("bypassed")
+	bs.Bcache.Total.CacheBypassHits = par.readValue("cache_bypass_hits")
+	bs.Bcache.Total.CacheBypassMisses = par.readValue("cache_bypass_misses")
+	bs.Bcache.Total.CacheHits = par.readValue("cache_hits")
+	bs.Bcache.Total.CacheMissCollisions = par.readValue("cache_miss_collisions")
+	bs.Bcache.Total.CacheMisses = par.readValue("cache_misses")
+	bs.Bcache.Total.CacheReadaheads = par.readValue("cache_readaheads")
+
+	if par.err != nil {
+		return nil, par.err
+	}
+
+	// bdev stats
+
+	reg := path.Join(uuidPath, "bdev[0-9]*")
+	bdevDirs, err := filepath.Glob(reg)
+	if err != nil {
+		return nil, err
+	}
+
+	bs.Bdevs = make([]BdevStats, len(bdevDirs))
+
+	for ii, bdevDir := range bdevDirs {
+		var bds = &bs.Bdevs[ii]
+
+		bds.Name = filepath.Base(bdevDir)
+
+		par.setSubDir(bds.Name)
+		bds.DirtyData = par.readValue("dirty_data")
+
+		// dir <uuidPath>/<bds.Name>/stats_five_minute
+		par.setSubDir(bds.Name, "stats_five_minute")
+		bds.FiveMin.Bypassed = par.readValue("bypassed")
+		bds.FiveMin.CacheBypassHits = par.readValue("cache_bypass_hits")
+		bds.FiveMin.CacheBypassMisses = par.readValue("cache_bypass_misses")
+		bds.FiveMin.CacheHits = par.readValue("cache_hits")
+		bds.FiveMin.CacheMissCollisions = par.readValue("cache_miss_collisions")
+		bds.FiveMin.CacheMisses = par.readValue("cache_misses")
+		bds.FiveMin.CacheReadaheads = par.readValue("cache_readaheads")
+
+		// dir <uuidPath>/<bds.Name>/stats_total
+		par.setSubDir("stats_total")
+		bds.Total.Bypassed = par.readValue("bypassed")
+		bds.Total.CacheBypassHits = par.readValue("cache_bypass_hits")
+		bds.Total.CacheBypassMisses = par.readValue("cache_bypass_misses")
+		bds.Total.CacheHits = par.readValue("cache_hits")
+		bds.Total.CacheMissCollisions = par.readValue("cache_miss_collisions")
+		bds.Total.CacheMisses = par.readValue("cache_misses")
+		bds.Total.CacheReadaheads = par.readValue("cache_readaheads")
+	}
+
+	if par.err != nil {
+		return nil, par.err
+	}
+
+	// cache stats
+
+	reg = path.Join(uuidPath, "cache[0-9]*")
+	cacheDirs, err := filepath.Glob(reg)
+	if err != nil {
+		return nil, err
+	}
+	bs.Caches = make([]CacheStats, len(cacheDirs))
+
+	for ii, cacheDir := range cacheDirs {
+		var cs = &bs.Caches[ii]
+		cs.Name = filepath.Base(cacheDir)
+
+		// dir is <uuidPath>/<cs.Name>
+		par.setSubDir(cs.Name)
+		cs.IOErrors = par.readValue("io_errors")
+		cs.MetadataWritten = par.readValue("metadata_written")
+		cs.Written = par.readValue("written")
+
+		ps := par.getPriorityStats()
+		cs.Priority = ps
+	}
+
+	if par.err != nil {
+		return nil, par.err
+	}
+
+	return &bs, nil
+}

vendor/github.com/prometheus/procfs/bcache/get_test.go

@@ -0,0 +1,114 @@
+// Copyright 2017 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 bcache
+
+import (
+	"math"
+	"testing"
+)
+
+func TestDehumanizeTests(t *testing.T) {
+	dehumanizeTests := []struct {
+		in      []byte
+		out     uint64
+		invalid bool
+	}{
+		{
+			in:  []byte("542k"),
+			out: 555008,
+		},
+		{
+			in:  []byte("322M"),
+			out: 337641472,
+		},
+		{
+			in:  []byte("1.1k"),
+			out: 1124,
+		},
+		{
+			in:  []byte("1.9k"),
+			out: 1924,
+		},
+		{
+			in:  []byte("1.10k"),
+			out: 2024,
+		},
+		{
+			in:      []byte(""),
+			out:     0,
+			invalid: true,
+		},
+	}
+	for _, tst := range dehumanizeTests {
+		got, err := dehumanize(tst.in)
+		if tst.invalid && err == nil {
+			t.Error("expected an error, but none occurred")
+		}
+		if !tst.invalid && err != nil {
+			t.Errorf("unexpected error: %v", err)
+		}
+		if got != tst.out {
+			t.Errorf("dehumanize: '%s', want %d, got %d", tst.in, tst.out, got)
+		}
+	}
+}
+
+func TestParsePseudoFloatTests(t *testing.T) {
+	parsePseudoFloatTests := []struct {
+		in  string
+		out float64
+	}{
+		{
+			in:  "1.1",
+			out: float64(1.097656),
+		},
+		{
+			in:  "1.9",
+			out: float64(1.878906),
+		},
+		{
+			in:  "1.10",
+			out: float64(1.976562),
+		},
+	}
+	for _, tst := range parsePseudoFloatTests {
+		got, err := parsePseudoFloat(tst.in)
+		if err != nil || math.Abs(got-tst.out) > 0.0001 {
+			t.Errorf("parsePseudoFloat: %s, want %f, got %f", tst.in, tst.out, got)
+		}
+	}
+}
+
+func TestPriorityStats(t *testing.T) {
+	var want = PriorityStats{
+		UnusedPercent:   99,
+		MetadataPercent: 5,
+	}
+	var (
+		in     string
+		gotErr error
+		got    PriorityStats
+	)
+	in = "Metadata:       5%"
+	gotErr = parsePriorityStats(in, &got)
+	if gotErr != nil || got.MetadataPercent != want.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 %d, got %d", in, want.UnusedPercent, got.UnusedPercent)
+	}
+}

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")

vendor/github.com/prometheus/procfs/fixtures/26231/limits

@@ -8,7 +8,7 @@ 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         unlimited            unlimited            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

vendor/github.com/prometheus/procfs/fixtures/26231/net/dev

@@ -0,0 +1,4 @@
+Inter-|   Receive                                                |  Transmit
+ face |bytes    packets errs drop fifo frame compressed multicast|bytes    packets errs drop fifo colls carrier compressed
+    lo:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0
+  eth0:     438       5    0    0    0     0          0         0      648       8    0    0    0     0       0          0

vendor/github.com/prometheus/procfs/fixtures/26231/ns/mnt

@@ -0,0 +1 @@
+mnt:[4026531840]

vendor/github.com/prometheus/procfs/fixtures/26231/ns/net

@@ -0,0 +1 @@
+net:[4026531993]

vendor/github.com/prometheus/procfs/fixtures/net/dev

@@ -0,0 +1,6 @@
+Inter-|   Receive                                                |  Transmit
+ face |bytes    packets errs drop fifo frame compressed multicast|bytes    packets errs drop fifo colls carrier compressed
+vethf345468:     648       8    0    0    0     0          0         0      438       5    0    0    0     0       0          0
+    lo: 1664039048 1566805    0    0    0     0          0         0 1664039048 1566805    0    0    0     0       0          0
+docker0:    2568      38    0    0    0     0          0         0      438       5    0    0    0     0       0          0
+  eth0: 874354587 1036395    0    0    0     0          0         0 563352563  732147    0    0    0     0       0          0

vendor/github.com/prometheus/procfs/fixtures/net/ip_vs

@@ -1,14 +1,21 @@
 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  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

vendor/github.com/prometheus/procfs/fixtures/net/xfrm_stat

@@ -0,0 +1,28 @@
+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

vendor/github.com/prometheus/procfs/fixtures/stat

@@ -12,5 +12,5 @@ ctxt 38014093
 btime 1418183276
 processes 26442
 procs_running 2
-procs_blocked 0
+procs_blocked 1
 softirq 5057579 250191 1481983 1647 211099 186066 0 1783454 622196 12499 508444

vendor/github.com/prometheus/procfs/ipvs.go

@@ -31,14 +31,16 @@ type IPVSStats struct {
 type IPVSBackendStatus struct {
 	// The local (virtual) IP address.
 	LocalAddress net.IP
-	// The local (virtual) port.
-	LocalPort uint16
-	// The transport protocol (TCP, UDP).
-	Proto string
 	// 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 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.
@@ -142,13 +144,14 @@ func parseIPVSBackendStatus(file io.Reader) ([]IPVSBackendStatus, error) {
 		status       []IPVSBackendStatus
 		scanner      = bufio.NewScanner(file)
 		proto        string
+		localMark    string
 		localAddress net.IP
 		localPort    uint16
 		err          error
 	)
 
 	for scanner.Scan() {
-		fields := strings.Fields(string(scanner.Text()))
+		fields := strings.Fields(scanner.Text())
 		if len(fields) == 0 {
 			continue
 		}
@@ -160,10 +163,19 @@ func parseIPVSBackendStatus(file io.Reader) ([]IPVSBackendStatus, error) {
 				continue
 			}
 			proto = fields[0]
+			localMark = ""
 			localAddress, localPort, err = parseIPPort(fields[1])
 			if err != nil {
 				return nil, err
 			}
+		case fields[0] == "FWM":
+			if len(fields) < 2 {
+				continue
+			}
+			proto = fields[0]
+			localMark = fields[1]
+			localAddress = nil
+			localPort = 0
 		case fields[0] == "->":
 			if len(fields) < 6 {
 				continue
@@ -187,6 +199,7 @@ func parseIPVSBackendStatus(file io.Reader) ([]IPVSBackendStatus, error) {
 			status = append(status, IPVSBackendStatus{
 				LocalAddress:  localAddress,
 				LocalPort:     localPort,
+				LocalMark:     localMark,
 				RemoteAddress: remoteAddress,
 				RemotePort:    remotePort,
 				Proto:         proto,
@@ -200,22 +213,31 @@ func parseIPVSBackendStatus(file io.Reader) ([]IPVSBackendStatus, error) {
 }
 
 func parseIPPort(s string) (net.IP, uint16, error) {
-	tmp := strings.SplitN(s, ":", 2)
+	var (
+		ip  net.IP
+		err error
+	)
 
-	if len(tmp) != 2 {
-		return nil, 0, fmt.Errorf("invalid IP:Port: %s", s)
+	switch len(s) {
+	case 13:
+		ip, err = hex.DecodeString(s[0:8])
+		if err != nil {
+			return nil, 0, err
+		}
+	case 46:
+		ip = net.ParseIP(s[1:40])
+		if ip == nil {
+			return nil, 0, fmt.Errorf("invalid IPv6 address: %s", s[1:40])
+		}
+	default:
+		return nil, 0, fmt.Errorf("unexpected IP:Port: %s", s)
 	}
 
-	if len(tmp[0]) != 8 && len(tmp[0]) != 32 {
-		return nil, 0, fmt.Errorf("invalid IP: %s", tmp[0])
+	portString := s[len(s)-4:]
+	if len(portString) != 4 {
+		return nil, 0, fmt.Errorf("unexpected port string format: %s", portString)
 	}
-
-	ip, err := hex.DecodeString(tmp[0])
-	if err != nil {
-		return nil, 0, err
-	}
-
-	port, err := strconv.ParseUint(tmp[1], 16, 16)
+	port, err := strconv.ParseUint(portString, 16, 16)
 	if err != nil {
 		return nil, 0, err
 	}

vendor/github.com/prometheus/procfs/ipvs_test.go

@@ -94,6 +94,54 @@ var (
 			ActiveConn:    0,
 			InactConn:     0,
 		},
+		{
+			LocalAddress:  net.ParseIP("2620::1"),
+			LocalPort:     80,
+			RemoteAddress: net.ParseIP("2620::2"),
+			RemotePort:    80,
+			Proto:         "TCP",
+			Weight:        1,
+			ActiveConn:    0,
+			InactConn:     0,
+		},
+		{
+			LocalAddress:  net.ParseIP("2620::1"),
+			LocalPort:     80,
+			RemoteAddress: net.ParseIP("2620::3"),
+			RemotePort:    80,
+			Proto:         "TCP",
+			Weight:        1,
+			ActiveConn:    0,
+			InactConn:     0,
+		},
+		{
+			LocalAddress:  net.ParseIP("2620::1"),
+			LocalPort:     80,
+			RemoteAddress: net.ParseIP("2620::4"),
+			RemotePort:    80,
+			Proto:         "TCP",
+			Weight:        1,
+			ActiveConn:    1,
+			InactConn:     1,
+		},
+		{
+			LocalMark:     "10001000",
+			RemoteAddress: net.ParseIP("192.168.50.26"),
+			RemotePort:    3306,
+			Proto:         "FWM",
+			Weight:        0,
+			ActiveConn:    0,
+			InactConn:     1,
+		},
+		{
+			LocalMark:     "10001000",
+			RemoteAddress: net.ParseIP("192.168.50.21"),
+			RemotePort:    3306,
+			Proto:         "FWM",
+			Weight:        0,
+			ActiveConn:    0,
+			InactConn:     2,
+		},
 	}
 )
 
@@ -142,14 +190,13 @@ func TestParseIPPortIPv6(t *testing.T) {
 	ip := net.ParseIP("dead:beef::1")
 	port := uint16(8080)
 
-	gotIP, gotPort, err := parseIPPort("DEADBEEF000000000000000000000001:1F90")
+	gotIP, gotPort, err := parseIPPort("[DEAD:BEEF:0000:0000:0000:0000:0000:0001]:1F90")
 	if err != nil {
 		t.Fatal(err)
 	}
 	if !(gotIP.Equal(ip) && port == gotPort) {
 		t.Errorf("want %s:%d, have %s:%d", ip, port, gotIP, gotPort)
 	}
-
 }
 
 func TestIPVSBackendStatus(t *testing.T) {

vendor/github.com/prometheus/procfs/mountstats.go

@@ -523,15 +523,19 @@ func parseNFSTransportStats(ss []string, statVersion string) (*NFSTransportStats
 	}
 
 	// Allocate enough for v1.1 stats since zero value for v1.1 stats will be okay
-	// in a v1.0 response
-	ns := make([]uint64, 0, fieldTransport11Len)
-	for _, s := range ss {
+	// in a v1.0 response.
+	//
+	// Note: slice length must be set to length of v1.1 stats to avoid a panic when
+	// only v1.0 stats are present.
+	// See: https://github.com/prometheus/node_exporter/issues/571.
+	ns := make([]uint64, fieldTransport11Len)
+	for i, s := range ss {
 		n, err := strconv.ParseUint(s, 10, 64)
 		if err != nil {
 			return nil, err
 		}
 
-		ns = append(ns, n)
+		ns[i] = n
 	}
 
 	return &NFSTransportStats{

vendor/github.com/prometheus/procfs/mountstats_test.go

@@ -89,6 +89,30 @@ func TestMountStats(t *testing.T) {
 			s:       "device 192.168.1.1:/srv mounted on /mnt/nfs with fstype nfs4 statvers=1.1\nxprt: tcp 0 0 0 0 0 0 0 0 0 0",
 			invalid: true,
 		},
+		{
+			name: "NFSv3 device with transport stats version 1.0 OK",
+			s:    "device 192.168.1.1:/srv mounted on /mnt/nfs with fstype nfs statvers=1.0\nxprt: tcp 1 2 3 4 5 6 7 8 9 10",
+			mounts: []*Mount{{
+				Device: "192.168.1.1:/srv",
+				Mount:  "/mnt/nfs",
+				Type:   "nfs",
+				Stats: &MountStatsNFS{
+					StatVersion: "1.0",
+					Transport: NFSTransportStats{
+						Port:                     1,
+						Bind:                     2,
+						Connect:                  3,
+						ConnectIdleTime:          4,
+						IdleTime:                 5 * time.Second,
+						Sends:                    6,
+						Receives:                 7,
+						BadTransactionIDs:        8,
+						CumulativeActiveRequests: 9,
+						CumulativeBacklog:        10,
+					},
+				},
+			}},
+		},
 		{
 			name: "device rootfs OK",
 			s:    `device rootfs mounted on / with fstype rootfs`,

vendor/github.com/prometheus/procfs/net_dev.go

@@ -0,0 +1,203 @@
+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
+}

vendor/github.com/prometheus/procfs/net_dev_test.go

@@ -0,0 +1,73 @@
+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)
+		}
+	}
+}

vendor/github.com/prometheus/procfs/proc_io.go

@@ -47,9 +47,6 @@ 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
 }

vendor/github.com/prometheus/procfs/proc_limits.go

@@ -13,46 +13,46 @@ import (
 // http://man7.org/linux/man-pages/man2/getrlimit.2.html.
 type ProcLimits struct {
 	// CPU time limit in seconds.
-	CPUTime int
+	CPUTime int64
 	// Maximum size of files that the process may create.
-	FileSize int
+	FileSize int64
 	// Maximum size of the process's data segment (initialized data,
 	// uninitialized data, and heap).
-	DataSize int
+	DataSize int64
 	// Maximum size of the process stack in bytes.
-	StackSize int
+	StackSize int64
 	// Maximum size of a core file.
-	CoreFileSize int
+	CoreFileSize int64
 	// Limit of the process's resident set in pages.
-	ResidentSet int
+	ResidentSet int64
 	// Maximum number of processes that can be created for the real user ID of
 	// the calling process.
-	Processes int
+	Processes int64
 	// Value one greater than the maximum file descriptor number that can be
 	// opened by this process.
-	OpenFiles int
+	OpenFiles int64
 	// Maximum number of bytes of memory that may be locked into RAM.
-	LockedMemory int
+	LockedMemory int64
 	// Maximum size of the process's virtual memory address space in bytes.
-	AddressSpace int
+	AddressSpace int64
 	// Limit on the combined number of flock(2) locks and fcntl(2) leases that
 	// this process may establish.
-	FileLocks int
+	FileLocks int64
 	// Limit of signals that may be queued for the real user ID of the calling
 	// process.
-	PendingSignals int
+	PendingSignals int64
 	// Limit on the number of bytes that can be allocated for POSIX message
 	// queues for the real user ID of the calling process.
-	MsqqueueSize int
+	MsqqueueSize int64
 	// Limit of the nice priority set using setpriority(2) or nice(2).
-	NicePriority int
+	NicePriority int64
 	// Limit of the real-time priority set using sched_setscheduler(2) or
 	// sched_setparam(2).
-	RealtimePriority int
+	RealtimePriority int64
 	// Limit (in microseconds) on the amount of CPU time that a process
 	// scheduled under a real-time scheduling policy may consume without making
 	// a blocking system call.
-	RealtimeTimeout int
+	RealtimeTimeout int64
 }
 
 const (
@@ -125,13 +125,13 @@ func (p Proc) NewLimits() (ProcLimits, error) {
 	return l, s.Err()
 }
 
-func parseInt(s string) (int, error) {
+func parseInt(s string) (int64, error) {
 	if s == limitsUnlimited {
 		return -1, nil
 	}
-	i, err := strconv.ParseInt(s, 10, 32)
+	i, err := strconv.ParseInt(s, 10, 64)
 	if err != nil {
 		return 0, fmt.Errorf("couldn't parse value %s: %s", s, err)
 	}
-	return int(i), nil
+	return i, nil
 }

vendor/github.com/prometheus/procfs/proc_limits_test.go

@@ -15,14 +15,14 @@ func TestNewLimits(t *testing.T) {
 
 	for _, test := range []struct {
 		name string
-		want int
-		have int
+		want int64
+		have int64
 	}{
 		{name: "cpu time", want: -1, have: l.CPUTime},
 		{name: "open files", want: 2048, have: l.OpenFiles},
 		{name: "msgqueue size", want: 819200, have: l.MsqqueueSize},
 		{name: "nice priority", want: 0, have: l.NicePriority},
-		{name: "address space", want: -1, have: l.AddressSpace},
+		{name: "address space", want: 8589934592, have: l.AddressSpace},
 	} {
 		if test.want != test.have {
 			t.Errorf("want %s %d, have %d", test.name, test.want, test.have)

vendor/github.com/prometheus/procfs/proc_ns.go

@@ -0,0 +1,55 @@
+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
+}

vendor/github.com/prometheus/procfs/proc_ns_test.go

@@ -0,0 +1,31 @@
+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)
+		}
+	}
+}

vendor/github.com/prometheus/procfs/stat.go

@@ -3,15 +3,66 @@ package procfs
 import (
 	"bufio"
 	"fmt"
+	"io"
 	"os"
 	"strconv"
 	"strings"
 )
 
+// CPUStat shows how much time the cpu spend in various stages.
+type CPUStat struct {
+	User      float64
+	Nice      float64
+	System    float64
+	Idle      float64
+	Iowait    float64
+	IRQ       float64
+	SoftIRQ   float64
+	Steal     float64
+	Guest     float64
+	GuestNice float64
+}
+
+// SoftIRQStat represent the softirq statistics as exported in the procfs stat file.
+// A nice introduction can be found at https://0xax.gitbooks.io/linux-insides/content/interrupts/interrupts-9.html
+// It is possible to get per-cpu stats by reading /proc/softirqs
+type SoftIRQStat struct {
+	Hi          uint64
+	Timer       uint64
+	NetTx       uint64
+	NetRx       uint64
+	Block       uint64
+	BlockIoPoll uint64
+	Tasklet     uint64
+	Sched       uint64
+	Hrtimer     uint64
+	Rcu         uint64
+}
+
 // Stat represents kernel/system statistics.
 type Stat struct {
 	// Boot time in seconds since the Epoch.
-	BootTime int64
+	BootTime uint64
+	// Summed up cpu statistics.
+	CPUTotal CPUStat
+	// Per-CPU statistics.
+	CPU []CPUStat
+	// Number of times interrupts were handled, which contains numbered and unnumbered IRQs.
+	IRQTotal uint64
+	// Number of times a numbered IRQ was triggered.
+	IRQ []uint64
+	// Number of times a context switch happened.
+	ContextSwitches uint64
+	// Number of times a process was created.
+	ProcessCreated uint64
+	// Number of processes currently running.
+	ProcessesRunning uint64
+	// Number of processes currently blocked (waiting for IO).
+	ProcessesBlocked uint64
+	// Number of times a softirq was scheduled.
+	SoftIRQTotal uint64
+	// Detailed softirq statistics.
+	SoftIRQ SoftIRQStat
 }
 
 // NewStat returns kernel/system statistics read from /proc/stat.
@@ -24,33 +75,145 @@ func NewStat() (Stat, error) {
 	return fs.NewStat()
 }
 
+// Parse a cpu statistics line and returns the CPUStat struct plus the cpu id (or -1 for the overall sum).
+func parseCPUStat(line string) (CPUStat, int64, error) {
+	cpuStat := CPUStat{}
+	var cpu string
+
+	count, err := fmt.Sscanf(line, "%s %f %f %f %f %f %f %f %f %f %f",
+		&cpu,
+		&cpuStat.User, &cpuStat.Nice, &cpuStat.System, &cpuStat.Idle,
+		&cpuStat.Iowait, &cpuStat.IRQ, &cpuStat.SoftIRQ, &cpuStat.Steal,
+		&cpuStat.Guest, &cpuStat.GuestNice)
+
+	if err != nil && err != io.EOF {
+		return CPUStat{}, -1, fmt.Errorf("couldn't parse %s (cpu): %s", line, err)
+	}
+	if count == 0 {
+		return CPUStat{}, -1, fmt.Errorf("couldn't parse %s (cpu): 0 elements parsed", line)
+	}
+
+	cpuStat.User /= userHZ
+	cpuStat.Nice /= userHZ
+	cpuStat.System /= userHZ
+	cpuStat.Idle /= userHZ
+	cpuStat.Iowait /= userHZ
+	cpuStat.IRQ /= userHZ
+	cpuStat.SoftIRQ /= userHZ
+	cpuStat.Steal /= userHZ
+	cpuStat.Guest /= userHZ
+	cpuStat.GuestNice /= userHZ
+
+	if cpu == "cpu" {
+		return cpuStat, -1, nil
+	}
+
+	cpuID, err := strconv.ParseInt(cpu[3:], 10, 64)
+	if err != nil {
+		return CPUStat{}, -1, fmt.Errorf("couldn't parse %s (cpu/cpuid): %s", line, err)
+	}
+
+	return cpuStat, cpuID, nil
+}
+
+// Parse a softirq line.
+func parseSoftIRQStat(line string) (SoftIRQStat, uint64, error) {
+	softIRQStat := SoftIRQStat{}
+	var total uint64
+	var prefix string
+
+	_, err := fmt.Sscanf(line, "%s %d %d %d %d %d %d %d %d %d %d %d",
+		&prefix, &total,
+		&softIRQStat.Hi, &softIRQStat.Timer, &softIRQStat.NetTx, &softIRQStat.NetRx,
+		&softIRQStat.Block, &softIRQStat.BlockIoPoll,
+		&softIRQStat.Tasklet, &softIRQStat.Sched,
+		&softIRQStat.Hrtimer, &softIRQStat.Rcu)
+
+	if err != nil {
+		return SoftIRQStat{}, 0, fmt.Errorf("couldn't parse %s (softirq): %s", line, err)
+	}
+
+	return softIRQStat, total, nil
+}
+
 // NewStat returns an information about current kernel/system statistics.
 func (fs FS) NewStat() (Stat, error) {
+	// See https://www.kernel.org/doc/Documentation/filesystems/proc.txt
+
 	f, err := os.Open(fs.Path("stat"))
 	if err != nil {
 		return Stat{}, err
 	}
 	defer f.Close()
 
-	s := bufio.NewScanner(f)
-	for s.Scan() {
-		line := s.Text()
-		if !strings.HasPrefix(line, "btime") {
+	stat := Stat{}
+
+	scanner := bufio.NewScanner(f)
+	for scanner.Scan() {
+		line := scanner.Text()
+		parts := strings.Fields(scanner.Text())
+		// require at least <key> <value>
+		if len(parts) < 2 {
 			continue
 		}
-		fields := strings.Fields(line)
-		if len(fields) != 2 {
-			return Stat{}, fmt.Errorf("couldn't parse %s line %s", f.Name(), line)
+		switch {
+		case parts[0] == "btime":
+			if stat.BootTime, err = strconv.ParseUint(parts[1], 10, 64); err != nil {
+				return Stat{}, fmt.Errorf("couldn't parse %s (btime): %s", parts[1], err)
+			}
+		case parts[0] == "intr":
+			if stat.IRQTotal, err = strconv.ParseUint(parts[1], 10, 64); err != nil {
+				return Stat{}, fmt.Errorf("couldn't parse %s (intr): %s", parts[1], err)
+			}
+			numberedIRQs := parts[2:]
+			stat.IRQ = make([]uint64, len(numberedIRQs))
+			for i, count := range numberedIRQs {
+				if stat.IRQ[i], err = strconv.ParseUint(count, 10, 64); err != nil {
+					return Stat{}, fmt.Errorf("couldn't parse %s (intr%d): %s", count, i, err)
+				}
+			}
+		case parts[0] == "ctxt":
+			if stat.ContextSwitches, err = strconv.ParseUint(parts[1], 10, 64); err != nil {
+				return Stat{}, fmt.Errorf("couldn't parse %s (ctxt): %s", parts[1], err)
+			}
+		case parts[0] == "processes":
+			if stat.ProcessCreated, err = strconv.ParseUint(parts[1], 10, 64); err != nil {
+				return Stat{}, fmt.Errorf("couldn't parse %s (processes): %s", parts[1], err)
+			}
+		case parts[0] == "procs_running":
+			if stat.ProcessesRunning, err = strconv.ParseUint(parts[1], 10, 64); err != nil {
+				return Stat{}, fmt.Errorf("couldn't parse %s (procs_running): %s", parts[1], err)
+			}
+		case parts[0] == "procs_blocked":
+			if stat.ProcessesBlocked, err = strconv.ParseUint(parts[1], 10, 64); err != nil {
+				return Stat{}, fmt.Errorf("couldn't parse %s (procs_blocked): %s", parts[1], err)
+			}
+		case parts[0] == "softirq":
+			softIRQStats, total, err := parseSoftIRQStat(line)
+			if err != nil {
+				return Stat{}, err
+			}
+			stat.SoftIRQTotal = total
+			stat.SoftIRQ = softIRQStats
+		case strings.HasPrefix(parts[0], "cpu"):
+			cpuStat, cpuID, err := parseCPUStat(line)
+			if err != nil {
+				return Stat{}, err
+			}
+			if cpuID == -1 {
+				stat.CPUTotal = cpuStat
+			} else {
+				for int64(len(stat.CPU)) <= cpuID {
+					stat.CPU = append(stat.CPU, CPUStat{})
+				}
+				stat.CPU[cpuID] = cpuStat
+			}
 		}
-		i, err := strconv.ParseInt(fields[1], 10, 32)
-		if err != nil {
-			return Stat{}, fmt.Errorf("couldn't parse %s: %s", fields[1], err)
-		}
-		return Stat{BootTime: i}, nil
 	}
-	if err := s.Err(); err != nil {
+
+	if err := scanner.Err(); err != nil {
 		return Stat{}, fmt.Errorf("couldn't parse %s: %s", f.Name(), err)
 	}
 
-	return Stat{}, fmt.Errorf("couldn't parse %s, missing btime", f.Name())
+	return stat, nil
 }

vendor/github.com/prometheus/procfs/stat_test.go

@@ -8,7 +8,54 @@ func TestStat(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	if want, have := int64(1418183276), s.BootTime; want != have {
-		t.Errorf("want boot time %d, have %d", want, have)
+	// cpu
+	if want, have := float64(301854)/userHZ, s.CPUTotal.User; want != have {
+		t.Errorf("want cpu/user %v, have %v", want, have)
 	}
+	if want, have := float64(31)/userHZ, s.CPU[7].SoftIRQ; want != have {
+		t.Errorf("want cpu7/softirq %v, have %v", want, have)
+	}
+
+	// intr
+	if want, have := uint64(8885917), s.IRQTotal; want != have {
+		t.Errorf("want irq/total %d, have %d", want, have)
+	}
+	if want, have := uint64(1), s.IRQ[8]; want != have {
+		t.Errorf("want irq8 %d, have %d", want, have)
+	}
+
+	// ctxt
+	if want, have := uint64(38014093), s.ContextSwitches; want != have {
+		t.Errorf("want context switches (ctxt) %d, have %d", want, have)
+	}
+
+	// btime
+	if want, have := uint64(1418183276), s.BootTime; want != have {
+		t.Errorf("want boot time (btime) %d, have %d", want, have)
+	}
+
+	// processes
+	if want, have := uint64(26442), s.ProcessCreated; want != have {
+		t.Errorf("want process created (processes) %d, have %d", want, have)
+	}
+
+	// procs_running
+	if want, have := uint64(2), s.ProcessesRunning; want != have {
+		t.Errorf("want processes running (procs_running) %d, have %d", want, have)
+	}
+
+	// procs_blocked
+	if want, have := uint64(1), s.ProcessesBlocked; want != have {
+		t.Errorf("want processes blocked (procs_blocked) %d, have %d", want, have)
+	}
+
+	// softirq
+	if want, have := uint64(5057579), s.SoftIRQTotal; want != have {
+		t.Errorf("want softirq total %d, have %d", want, have)
+	}
+
+	if want, have := uint64(508444), s.SoftIRQ.Rcu; want != have {
+		t.Errorf("want softirq RCU %d, have %d", want, have)
+	}
+
 }

vendor/github.com/prometheus/procfs/sysfs/.gitignore

@@ -0,0 +1 @@
+fixtures/

vendor/github.com/prometheus/procfs/sysfs/doc.go

@@ -0,0 +1,16 @@
+// Copyright 2017 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 sysfs provides functions to retrieve system and kernel metrics
+// from the pseudo-filesystem sys.
+package sysfs

vendor/github.com/prometheus/procfs/sysfs/fixtures.ttar

@@ -0,0 +1,721 @@
+Directory: fixtures
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/devices
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/devices/pci0000:00
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/devices/pci0000:00/0000:00:0d.0
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/devices/pci0000:00/0000:00:0d.0/ata4
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/devices/pci0000:00/0000:00:0d.0/ata4/host3
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdb
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdb/bcache
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdb/bcache/dirty_data
+Lines: 1
+0
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdb/bcache/stats_day
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdb/bcache/stats_day/bypassed
+Lines: 1
+0
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdb/bcache/stats_day/cache_bypass_hits
+Lines: 1
+0
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdb/bcache/stats_day/cache_bypass_misses
+Lines: 1
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vendor/github.com/prometheus/procfs/sysfs/fs.go

@@ -0,0 +1,108 @@
+// Copyright 2017 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 sysfs
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/prometheus/procfs/bcache"
+	"github.com/prometheus/procfs/xfs"
+)
+
+// FS represents the pseudo-filesystem sys, which provides an interface to
+// kernel data structures.
+type FS string
+
+// DefaultMountPoint is the common mount point of the sys filesystem.
+const DefaultMountPoint = "/sys"
+
+// NewFS returns a new FS mounted under the given mountPoint. It will error
+// if the mount point can't be read.
+func NewFS(mountPoint string) (FS, error) {
+	info, err := os.Stat(mountPoint)
+	if err != nil {
+		return "", fmt.Errorf("could not read %s: %s", mountPoint, err)
+	}
+	if !info.IsDir() {
+		return "", fmt.Errorf("mount point %s is not a directory", mountPoint)
+	}
+
+	return FS(mountPoint), nil
+}
+
+// Path returns the path of the given subsystem relative to the sys root.
+func (fs FS) Path(p ...string) string {
+	return filepath.Join(append([]string{string(fs)}, p...)...)
+}
+
+// XFSStats retrieves XFS filesystem runtime statistics for each mounted XFS
+// filesystem.  Only available on kernel 4.4+.  On older kernels, an empty
+// slice of *xfs.Stats will be returned.
+func (fs FS) XFSStats() ([]*xfs.Stats, error) {
+	matches, err := filepath.Glob(fs.Path("fs/xfs/*/stats/stats"))
+	if err != nil {
+		return nil, err
+	}
+
+	stats := make([]*xfs.Stats, 0, len(matches))
+	for _, m := range matches {
+		f, err := os.Open(m)
+		if err != nil {
+			return nil, err
+		}
+
+		// "*" used in glob above indicates the name of the filesystem.
+		name := filepath.Base(filepath.Dir(filepath.Dir(m)))
+
+		// File must be closed after parsing, regardless of success or
+		// failure.  Defer is not used because of the loop.
+		s, err := xfs.ParseStats(f)
+		_ = f.Close()
+		if err != nil {
+			return nil, err
+		}
+
+		s.Name = name
+		stats = append(stats, s)
+	}
+
+	return stats, nil
+}
+
+// BcacheStats retrieves bcache runtime statistics for each bcache.
+func (fs FS) BcacheStats() ([]*bcache.Stats, error) {
+	matches, err := filepath.Glob(fs.Path("fs/bcache/*-*"))
+	if err != nil {
+		return nil, err
+	}
+
+	stats := make([]*bcache.Stats, 0, len(matches))
+	for _, uuidPath := range matches {
+		// "*-*" in glob above indicates the name of the bcache.
+		name := filepath.Base(uuidPath)
+
+		// stats
+		s, err := bcache.GetStats(uuidPath)
+		if err != nil {
+			return nil, err
+		}
+
+		s.Name = name
+		stats = append(stats, s)
+	}
+
+	return stats, nil
+}

vendor/github.com/prometheus/procfs/sysfs/fs_test.go

@@ -0,0 +1,108 @@
+// Copyright 2017 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 sysfs
+
+import "testing"
+
+func TestNewFS(t *testing.T) {
+	if _, err := NewFS("foobar"); err == nil {
+		t.Error("want NewFS to fail for non-existing mount point")
+	}
+
+	if _, err := NewFS("doc.go"); err == nil {
+		t.Error("want NewFS to fail if mount point is not a directory")
+	}
+}
+
+func TestFSXFSStats(t *testing.T) {
+	stats, err := FS("fixtures").XFSStats()
+	if err != nil {
+		t.Fatalf("failed to parse XFS stats: %v", err)
+	}
+
+	tests := []struct {
+		name      string
+		allocated uint32
+	}{
+		{
+			name:      "sda1",
+			allocated: 1,
+		},
+		{
+			name:      "sdb1",
+			allocated: 2,
+		},
+	}
+
+	const expect = 2
+
+	if l := len(stats); l != expect {
+		t.Fatalf("unexpected number of XFS stats: %d", l)
+	}
+	if l := len(tests); l != expect {
+		t.Fatalf("unexpected number of tests: %d", l)
+	}
+
+	for i, tt := range tests {
+		if want, got := tt.name, stats[i].Name; want != got {
+			t.Errorf("unexpected stats name:\nwant: %q\nhave: %q", want, got)
+		}
+
+		if want, got := tt.allocated, stats[i].ExtentAllocation.ExtentsAllocated; want != got {
+			t.Errorf("unexpected extents allocated:\nwant: %d\nhave: %d", want, got)
+		}
+	}
+}
+
+func TestFSBcacheStats(t *testing.T) {
+	stats, err := FS("fixtures").BcacheStats()
+	if err != nil {
+		t.Fatalf("failed to parse bcache stats: %v", err)
+	}
+
+	tests := []struct {
+		name   string
+		bdevs  int
+		caches int
+	}{
+		{
+			name:   "deaddd54-c735-46d5-868e-f331c5fd7c74",
+			bdevs:  1,
+			caches: 1,
+		},
+	}
+
+	const expect = 1
+
+	if l := len(stats); l != expect {
+		t.Fatalf("unexpected number of bcache stats: %d", l)
+	}
+	if l := len(tests); l != expect {
+		t.Fatalf("unexpected number of tests: %d", l)
+	}
+
+	for i, tt := range tests {
+		if want, got := tt.name, stats[i].Name; want != got {
+			t.Errorf("unexpected stats name:\nwant: %q\nhave: %q", want, got)
+		}
+
+		if want, got := tt.bdevs, len(stats[i].Bdevs); want != got {
+			t.Errorf("unexpected value allocated:\nwant: %d\nhave: %d", want, got)
+		}
+
+		if want, got := tt.caches, len(stats[i].Caches); want != got {
+			t.Errorf("unexpected value allocated:\nwant: %d\nhave: %d", want, got)
+		}
+	}
+}

vendor/github.com/prometheus/procfs/ttar

@@ -0,0 +1,264 @@
+#!/usr/bin/env bash
+# Purpose: plain text tar format
+# Limitations: - only suitable for text files, directories, and symlinks
+#              - stores only filename, content, and mode
+#              - not designed for untrusted input
+
+# Note: must work with bash version 3.2 (macOS)
+
+set -o errexit -o nounset
+
+# Sanitize environment (for instance, standard sorting of glob matches)
+export LC_ALL=C
+
+path=""
+CMD=""
+
+function usage {
+    bname=$(basename "$0")
+    cat << USAGE
+Usage:   $bname [-C <DIR>] -c -f <ARCHIVE> <FILE...> (create archive)
+         $bname            -t -f <ARCHIVE>           (list archive contents)
+         $bname [-C <DIR>] -x -f <ARCHIVE>           (extract archive)
+
+Options:
+         -C <DIR>                                    (change directory)
+
+Example: Change to sysfs directory, create ttar file from fixtures directory
+         $bname -C sysfs -c -f sysfs/fixtures.ttar fixtures/
+USAGE
+exit "$1"
+}
+
+function vecho {
+    if [ "${VERBOSE:-}" == "yes" ]; then
+        echo >&7 "$@"
+    fi
+}
+
+function set_cmd {
+    if [ -n "$CMD" ]; then
+        echo "ERROR: more than one command given"
+        echo
+        usage 2
+    fi
+    CMD=$1
+}
+
+while getopts :cf:htxvC: opt; do
+    case $opt in
+        c)
+            set_cmd "create"
+            ;;
+        f)
+            ARCHIVE=$OPTARG
+            ;;
+        h)
+            usage 0
+            ;;
+        t)
+            set_cmd "list"
+            ;;
+        x)
+            set_cmd "extract"
+            ;;
+        v)
+            VERBOSE=yes
+            exec 7>&1
+            ;;
+        C)
+            CDIR=$OPTARG
+            ;;
+        *)
+            echo >&2 "ERROR: invalid option -$OPTARG"
+            echo
+            usage 1
+            ;;
+    esac
+done
+
+# Remove processed options from arguments
+shift $(( OPTIND - 1 ));
+
+if [ "${CMD:-}" == "" ]; then
+    echo >&2 "ERROR: no command given"
+    echo
+    usage 1
+elif [ "${ARCHIVE:-}" == "" ]; then
+    echo >&2 "ERROR: no archive name given"
+    echo
+    usage 1
+fi
+
+function list {
+    local path=""
+    local size=0
+    local line_no=0
+    local ttar_file=$1
+    if [ -n "${2:-}" ]; then
+        echo >&2 "ERROR: too many arguments."
+        echo
+        usage 1
+    fi
+    if [ ! -e "$ttar_file" ]; then
+        echo >&2 "ERROR: file not found ($ttar_file)"
+        echo
+        usage 1
+    fi
+    while read -r line; do
+        line_no=$(( line_no + 1 ))
+        if [ $size -gt 0 ]; then
+            size=$(( size - 1 ))
+            continue
+        fi
+        if [[ $line =~ ^Path:\ (.*)$ ]]; then
+            path=${BASH_REMATCH[1]}
+        elif [[ $line =~ ^Lines:\ (.*)$ ]]; then
+            size=${BASH_REMATCH[1]}
+            echo "$path"
+        elif [[ $line =~ ^Directory:\ (.*)$ ]]; then
+            path=${BASH_REMATCH[1]}
+            echo "$path/"
+        elif [[ $line =~ ^SymlinkTo:\ (.*)$ ]]; then
+            echo  "$path -> ${BASH_REMATCH[1]}"
+        fi
+    done < "$ttar_file"
+}
+
+function extract {
+    local path=""
+    local size=0
+    local line_no=0
+    local ttar_file=$1
+    if [ -n "${2:-}" ]; then
+        echo >&2 "ERROR: too many arguments."
+        echo
+        usage 1
+    fi
+    if [ ! -e "$ttar_file" ]; then
+        echo >&2 "ERROR: file not found ($ttar_file)"
+        echo
+        usage 1
+    fi
+    while IFS= read -r line; do
+        line_no=$(( line_no + 1 ))
+        if [ "$size" -gt 0 ]; then
+            echo "$line" >> "$path"
+            size=$(( size - 1 ))
+            continue
+        fi
+        if [[ $line =~ ^Path:\ (.*)$ ]]; then
+            path=${BASH_REMATCH[1]}
+            if [ -e "$path" ] || [ -L "$path" ]; then
+                rm "$path"
+            fi
+        elif [[ $line =~ ^Lines:\ (.*)$ ]]; then
+            size=${BASH_REMATCH[1]}
+            # Create file even if it is zero-length.
+            touch "$path"
+            vecho "    $path"
+        elif [[ $line =~ ^Mode:\ (.*)$ ]]; then
+            mode=${BASH_REMATCH[1]}
+            chmod "$mode" "$path"
+            vecho "$mode"
+        elif [[ $line =~ ^Directory:\ (.*)$ ]]; then
+            path=${BASH_REMATCH[1]}
+            mkdir -p "$path"
+            vecho "    $path/"
+        elif [[ $line =~ ^SymlinkTo:\ (.*)$ ]]; then
+            ln -s "${BASH_REMATCH[1]}" "$path"
+            vecho "    $path -> ${BASH_REMATCH[1]}"
+        elif [[ $line =~ ^# ]]; then
+            # Ignore comments between files
+            continue
+        else
+            echo >&2 "ERROR: Unknown keyword on line $line_no: $line"
+            exit 1
+        fi
+    done < "$ttar_file"
+}
+
+function div {
+    echo "# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -" \
+         "- - - - - -"
+}
+
+function get_mode {
+    local mfile=$1
+    if [ -z "${STAT_OPTION:-}" ]; then
+        if stat -c '%a' "$mfile" >/dev/null 2>&1; then
+            STAT_OPTION='-c'
+            STAT_FORMAT='%a'
+        else
+            STAT_OPTION='-f'
+            STAT_FORMAT='%A'
+        fi
+    fi
+    stat "${STAT_OPTION}" "${STAT_FORMAT}" "$mfile"
+}
+
+function _create {
+    shopt -s nullglob
+    local mode
+    while (( "$#" )); do
+        file=$1
+        if [ -L "$file" ]; then
+            echo "Path: $file"
+            symlinkTo=$(readlink "$file")
+            echo "SymlinkTo: $symlinkTo"
+            vecho "    $file -> $symlinkTo"
+            div
+        elif [ -d "$file" ]; then
+            # Strip trailing slash (if there is one)
+            file=${file%/}
+            echo "Directory: $file"
+            mode=$(get_mode "$file")
+            echo "Mode: $mode"
+            vecho "$mode $file/"
+            div
+            # Find all files and dirs, including hidden/dot files
+            for x in "$file/"{*,.[^.]*}; do
+                _create "$x"
+            done
+        elif [ -f "$file" ]; then
+            echo "Path: $file"
+            lines=$(wc -l "$file"|awk '{print $1}')
+            echo "Lines: $lines"
+            cat "$file"
+            mode=$(get_mode "$file")
+            echo "Mode: $mode"
+            vecho "$mode $file"
+            div
+        else
+            echo >&2 "ERROR: file not found ($file in $(pwd))"
+            exit 2
+        fi
+        shift
+    done
+}
+
+function create {
+    ttar_file=$1
+    shift
+    if [ -z "${1:-}" ]; then
+        echo >&2 "ERROR: missing arguments."
+        echo
+        usage 1
+    fi
+    if [ -e "$ttar_file" ]; then
+        rm "$ttar_file"
+    fi
+    exec > "$ttar_file"
+    _create "$@"
+}
+
+if [ -n "${CDIR:-}" ]; then
+    if [[ "$ARCHIVE" != /* ]]; then
+        # Relative path: preserve the archive's location before changing
+        # directory
+        ARCHIVE="$(pwd)/$ARCHIVE"
+    fi
+    cd "$CDIR"
+fi
+
+"$CMD" "$ARCHIVE" "$@"

vendor/github.com/prometheus/procfs/xfrm.go

@@ -0,0 +1,187 @@
+// Copyright 2017 Prometheus Team
+// 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"
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+)
+
+// XfrmStat models the contents of /proc/net/xfrm_stat.
+type XfrmStat struct {
+	// All errors which are not matched by other
+	XfrmInError int
+	// No buffer is left
+	XfrmInBufferError int
+	// Header Error
+	XfrmInHdrError int
+	// No state found
+	// i.e. either inbound SPI, address, or IPSEC protocol at SA is wrong
+	XfrmInNoStates int
+	// Transformation protocol specific error
+	// e.g. SA Key is wrong
+	XfrmInStateProtoError int
+	// Transformation mode specific error
+	XfrmInStateModeError int
+	// Sequence error
+	// e.g. sequence number is out of window
+	XfrmInStateSeqError int
+	// State is expired
+	XfrmInStateExpired int
+	// State has mismatch option
+	// e.g. UDP encapsulation type is mismatched
+	XfrmInStateMismatch int
+	// State is invalid
+	XfrmInStateInvalid int
+	// No matching template for states
+	// e.g. Inbound SAs are correct but SP rule is wrong
+	XfrmInTmplMismatch int
+	// No policy is found for states
+	// e.g. Inbound SAs are correct but no SP is found
+	XfrmInNoPols int
+	// Policy discards
+	XfrmInPolBlock int
+	// Policy error
+	XfrmInPolError int
+	// All errors which are not matched by others
+	XfrmOutError int
+	// Bundle generation error
+	XfrmOutBundleGenError int
+	// Bundle check error
+	XfrmOutBundleCheckError int
+	// No state was found
+	XfrmOutNoStates int
+	// Transformation protocol specific error
+	XfrmOutStateProtoError int
+	// Transportation mode specific error
+	XfrmOutStateModeError int
+	// Sequence error
+	// i.e sequence number overflow
+	XfrmOutStateSeqError int
+	// State is expired
+	XfrmOutStateExpired int
+	// Policy discads
+	XfrmOutPolBlock int
+	// Policy is dead
+	XfrmOutPolDead int
+	// Policy Error
+	XfrmOutPolError     int
+	XfrmFwdHdrError     int
+	XfrmOutStateInvalid int
+	XfrmAcquireError    int
+}
+
+// NewXfrmStat reads the xfrm_stat statistics.
+func NewXfrmStat() (XfrmStat, error) {
+	fs, err := NewFS(DefaultMountPoint)
+	if err != nil {
+		return XfrmStat{}, err
+	}
+
+	return fs.NewXfrmStat()
+}
+
+// NewXfrmStat reads the xfrm_stat statistics from the 'proc' filesystem.
+func (fs FS) NewXfrmStat() (XfrmStat, error) {
+	file, err := os.Open(fs.Path("net/xfrm_stat"))
+	if err != nil {
+		return XfrmStat{}, err
+	}
+	defer file.Close()
+
+	var (
+		x = XfrmStat{}
+		s = bufio.NewScanner(file)
+	)
+
+	for s.Scan() {
+		fields := strings.Fields(s.Text())
+
+		if len(fields) != 2 {
+			return XfrmStat{}, fmt.Errorf(
+				"couldnt parse %s line %s", file.Name(), s.Text())
+		}
+
+		name := fields[0]
+		value, err := strconv.Atoi(fields[1])
+		if err != nil {
+			return XfrmStat{}, err
+		}
+
+		switch name {
+		case "XfrmInError":
+			x.XfrmInError = value
+		case "XfrmInBufferError":
+			x.XfrmInBufferError = value
+		case "XfrmInHdrError":
+			x.XfrmInHdrError = value
+		case "XfrmInNoStates":
+			x.XfrmInNoStates = value
+		case "XfrmInStateProtoError":
+			x.XfrmInStateProtoError = value
+		case "XfrmInStateModeError":
+			x.XfrmInStateModeError = value
+		case "XfrmInStateSeqError":
+			x.XfrmInStateSeqError = value
+		case "XfrmInStateExpired":
+			x.XfrmInStateExpired = value
+		case "XfrmInStateInvalid":
+			x.XfrmInStateInvalid = value
+		case "XfrmInTmplMismatch":
+			x.XfrmInTmplMismatch = value
+		case "XfrmInNoPols":
+			x.XfrmInNoPols = value
+		case "XfrmInPolBlock":
+			x.XfrmInPolBlock = value
+		case "XfrmInPolError":
+			x.XfrmInPolError = value
+		case "XfrmOutError":
+			x.XfrmOutError = value
+		case "XfrmInStateMismatch":
+			x.XfrmInStateMismatch = value
+		case "XfrmOutBundleGenError":
+			x.XfrmOutBundleGenError = value
+		case "XfrmOutBundleCheckError":
+			x.XfrmOutBundleCheckError = value
+		case "XfrmOutNoStates":
+			x.XfrmOutNoStates = value
+		case "XfrmOutStateProtoError":
+			x.XfrmOutStateProtoError = value
+		case "XfrmOutStateModeError":
+			x.XfrmOutStateModeError = value
+		case "XfrmOutStateSeqError":
+			x.XfrmOutStateSeqError = value
+		case "XfrmOutStateExpired":
+			x.XfrmOutStateExpired = value
+		case "XfrmOutPolBlock":
+			x.XfrmOutPolBlock = value
+		case "XfrmOutPolDead":
+			x.XfrmOutPolDead = value
+		case "XfrmOutPolError":
+			x.XfrmOutPolError = value
+		case "XfrmFwdHdrError":
+			x.XfrmFwdHdrError = value
+		case "XfrmOutStateInvalid":
+			x.XfrmOutStateInvalid = value
+		case "XfrmAcquireError":
+			x.XfrmAcquireError = value
+		}
+
+	}
+
+	return x, s.Err()
+}

vendor/github.com/prometheus/procfs/xfrm_test.go

@@ -0,0 +1,66 @@
+// Copyright 2017 Prometheus Team
+// 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 TestXfrmStats(t *testing.T) {
+	xfrmStats, err := FS("fixtures").NewXfrmStat()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	for _, test := range []struct {
+		name string
+		want int
+		got  int
+	}{
+		{name: "XfrmInError", want: 1, got: xfrmStats.XfrmInError},
+		{name: "XfrmInBufferError", want: 2, got: xfrmStats.XfrmInBufferError},
+		{name: "XfrmInHdrError", want: 4, got: xfrmStats.XfrmInHdrError},
+		{name: "XfrmInNoStates", want: 3, got: xfrmStats.XfrmInNoStates},
+		{name: "XfrmInStateProtoError", want: 40, got: xfrmStats.XfrmInStateProtoError},
+		{name: "XfrmInStateModeError", want: 100, got: xfrmStats.XfrmInStateModeError},
+		{name: "XfrmInStateSeqError", want: 6000, got: xfrmStats.XfrmInStateSeqError},
+		{name: "XfrmInStateExpired", want: 4, got: xfrmStats.XfrmInStateExpired},
+		{name: "XfrmInStateMismatch", want: 23451, got: xfrmStats.XfrmInStateMismatch},
+		{name: "XfrmInStateInvalid", want: 55555, got: xfrmStats.XfrmInStateInvalid},
+		{name: "XfrmInTmplMismatch", want: 51, got: xfrmStats.XfrmInTmplMismatch},
+		{name: "XfrmInNoPols", want: 65432, got: xfrmStats.XfrmInNoPols},
+		{name: "XfrmInPolBlock", want: 100, got: xfrmStats.XfrmInPolBlock},
+		{name: "XfrmInPolError", want: 10000, got: xfrmStats.XfrmInPolError},
+		{name: "XfrmOutError", want: 1000000, got: xfrmStats.XfrmOutError},
+		{name: "XfrmOutBundleGenError", want: 43321, got: xfrmStats.XfrmOutBundleGenError},
+		{name: "XfrmOutBundleCheckError", want: 555, got: xfrmStats.XfrmOutBundleCheckError},
+		{name: "XfrmOutNoStates", want: 869, got: xfrmStats.XfrmOutNoStates},
+		{name: "XfrmOutStateProtoError", want: 4542, got: xfrmStats.XfrmOutStateProtoError},
+		{name: "XfrmOutStateModeError", want: 4, got: xfrmStats.XfrmOutStateModeError},
+		{name: "XfrmOutStateSeqError", want: 543, got: xfrmStats.XfrmOutStateSeqError},
+		{name: "XfrmOutStateExpired", want: 565, got: xfrmStats.XfrmOutStateExpired},
+		{name: "XfrmOutPolBlock", want: 43456, got: xfrmStats.XfrmOutPolBlock},
+		{name: "XfrmOutPolDead", want: 7656, got: xfrmStats.XfrmOutPolDead},
+		{name: "XfrmOutPolError", want: 1454, got: xfrmStats.XfrmOutPolError},
+		{name: "XfrmFwdHdrError", want: 6654, got: xfrmStats.XfrmFwdHdrError},
+		{name: "XfrmOutStateInvaliad", want: 28765, got: xfrmStats.XfrmOutStateInvalid},
+		{name: "XfrmAcquireError", want: 24532, got: xfrmStats.XfrmAcquireError},
+		{name: "XfrmInStateInvalid", want: 55555, got: xfrmStats.XfrmInStateInvalid},
+		{name: "XfrmOutError", want: 1000000, got: xfrmStats.XfrmOutError},
+	} {
+		if test.want != test.got {
+			t.Errorf("Want %s %d, have %d", test.name, test.want, test.got)
+		}
+	}
+}

vendor/github.com/prometheus/procfs/xfs/parse.go

@@ -17,7 +17,6 @@ import (
 	"bufio"
 	"fmt"
 	"io"
-	"log"
 	"strconv"
 	"strings"
 )
@@ -273,7 +272,6 @@ func vnodeStats(us []uint32) (VnodeStats, error) {
 	// stats versions.  Therefore, 7 or 8 elements may appear in
 	// this slice.
 	l := len(us)
-	log.Println(l)
 	if l != 7 && l != 8 {
 		return VnodeStats{}, fmt.Errorf("incorrect number of values for XFS vnode stats: %d", l)
 	}

vendor/github.com/prometheus/procfs/xfs/parse_test.go

@@ -14,7 +14,6 @@
 package xfs_test
 
 import (
-	"log"
 	"reflect"
 	"strings"
 	"testing"
@@ -416,9 +415,7 @@ func TestParseStats(t *testing.T) {
 		},
 	}
 
-	for i, tt := range tests {
-		t.Logf("[%02d] test %q", i, tt.name)
-
+	for _, tt := range tests {
 		var (
 			stats *xfs.Stats
 			err   error
@@ -439,7 +436,6 @@ func TestParseStats(t *testing.T) {
 		}
 
 		if want, have := tt.stats, stats; !reflect.DeepEqual(want, have) {
-			log.Printf("stats: %#v", have)
 			t.Errorf("unexpected XFS stats:\nwant:\n%v\nhave:\n%v", want, have)
 		}
 	}

vendor/github.com/prometheus/procfs/xfs/xfs.go

@@ -22,6 +22,11 @@ package xfs
 // kernel source. Most counters are uint32s (same data types used in
 // xfs_stats.h), but some of the "extended precision stats" are uint64s.
 type Stats struct {
+	// The name of the filesystem used to source these statistics.
+	// If empty, this indicates aggregated statistics for all XFS
+	// filesystems on the host.
+	Name string
+
 	ExtentAllocation   ExtentAllocationStats
 	AllocationBTree    BTreeStats
 	BlockMapping       BlockMappingStats