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Add vendoring to containerd master

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Updates require github.com/LK4D4/vndr tool.

Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com>
This commit is contained in:
Phil Estes 2016-12-16 12:03:35 -05:00
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END OF TERMS AND CONDITIONS
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To apply the Apache License to your work, attach the following
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procfs provides functions to retrieve system, kernel and process
metrics from the pseudo-filesystem proc.
Copyright 2014-2015 The Prometheus Authors
This product includes software developed at
SoundCloud Ltd. (http://soundcloud.com/).

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// Copyright 2014 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 provides functions to retrieve system, kernel and process
// metrics from the pseudo-filesystem proc.
//
// Example:
//
// package main
//
// import (
// "fmt"
// "log"
//
// "github.com/prometheus/procfs"
// )
//
// func main() {
// p, err := procfs.Self()
// if err != nil {
// log.Fatalf("could not get process: %s", err)
// }
//
// stat, err := p.NewStat()
// if err != nil {
// log.Fatalf("could not get process stat: %s", err)
// }
//
// fmt.Printf("command: %s\n", stat.Comm)
// fmt.Printf("cpu time: %fs\n", stat.CPUTime())
// fmt.Printf("vsize: %dB\n", stat.VirtualMemory())
// fmt.Printf("rss: %dB\n", stat.ResidentMemory())
// }
//
package procfs

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package procfs
import (
"fmt"
"os"
"path"
)
// FS represents the pseudo-filesystem proc, which provides an interface to
// kernel data structures.
type FS string
// DefaultMountPoint is the common mount point of the proc filesystem.
const DefaultMountPoint = "/proc"
// 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 procfs root.
func (fs FS) Path(p ...string) string {
return path.Join(append([]string{string(fs)}, p...)...)
}

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package procfs
import (
"bufio"
"encoding/hex"
"errors"
"fmt"
"io"
"io/ioutil"
"net"
"os"
"strconv"
"strings"
)
// IPVSStats holds IPVS statistics, as exposed by the kernel in `/proc/net/ip_vs_stats`.
type IPVSStats struct {
// Total count of connections.
Connections uint64
// Total incoming packages processed.
IncomingPackets uint64
// Total outgoing packages processed.
OutgoingPackets uint64
// Total incoming traffic.
IncomingBytes uint64
// Total outgoing traffic.
OutgoingBytes uint64
}
// IPVSBackendStatus holds current metrics of one virtual / real address pair.
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 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.
InactConn uint64
// The current weight of this virtual/real address pair.
Weight uint64
}
// NewIPVSStats reads the IPVS statistics.
func NewIPVSStats() (IPVSStats, error) {
fs, err := NewFS(DefaultMountPoint)
if err != nil {
return IPVSStats{}, err
}
return fs.NewIPVSStats()
}
// NewIPVSStats reads the IPVS statistics from the specified `proc` filesystem.
func (fs FS) NewIPVSStats() (IPVSStats, error) {
file, err := os.Open(fs.Path("net/ip_vs_stats"))
if err != nil {
return IPVSStats{}, err
}
defer file.Close()
return parseIPVSStats(file)
}
// parseIPVSStats performs the actual parsing of `ip_vs_stats`.
func parseIPVSStats(file io.Reader) (IPVSStats, error) {
var (
statContent []byte
statLines []string
statFields []string
stats IPVSStats
)
statContent, err := ioutil.ReadAll(file)
if err != nil {
return IPVSStats{}, err
}
statLines = strings.SplitN(string(statContent), "\n", 4)
if len(statLines) != 4 {
return IPVSStats{}, errors.New("ip_vs_stats corrupt: too short")
}
statFields = strings.Fields(statLines[2])
if len(statFields) != 5 {
return IPVSStats{}, errors.New("ip_vs_stats corrupt: unexpected number of fields")
}
stats.Connections, err = strconv.ParseUint(statFields[0], 16, 64)
if err != nil {
return IPVSStats{}, err
}
stats.IncomingPackets, err = strconv.ParseUint(statFields[1], 16, 64)
if err != nil {
return IPVSStats{}, err
}
stats.OutgoingPackets, err = strconv.ParseUint(statFields[2], 16, 64)
if err != nil {
return IPVSStats{}, err
}
stats.IncomingBytes, err = strconv.ParseUint(statFields[3], 16, 64)
if err != nil {
return IPVSStats{}, err
}
stats.OutgoingBytes, err = strconv.ParseUint(statFields[4], 16, 64)
if err != nil {
return IPVSStats{}, err
}
return stats, nil
}
// NewIPVSBackendStatus reads and returns the status of all (virtual,real) server pairs.
func NewIPVSBackendStatus() ([]IPVSBackendStatus, error) {
fs, err := NewFS(DefaultMountPoint)
if err != nil {
return []IPVSBackendStatus{}, err
}
return fs.NewIPVSBackendStatus()
}
// NewIPVSBackendStatus reads and returns the status of all (virtual,real) server pairs from the specified `proc` filesystem.
func (fs FS) NewIPVSBackendStatus() ([]IPVSBackendStatus, error) {
file, err := os.Open(fs.Path("net/ip_vs"))
if err != nil {
return nil, err
}
defer file.Close()
return parseIPVSBackendStatus(file)
}
func parseIPVSBackendStatus(file io.Reader) ([]IPVSBackendStatus, error) {
var (
status []IPVSBackendStatus
scanner = bufio.NewScanner(file)
proto string
localAddress net.IP
localPort uint16
err error
)
for scanner.Scan() {
fields := strings.Fields(string(scanner.Text()))
if len(fields) == 0 {
continue
}
switch {
case fields[0] == "IP" || fields[0] == "Prot" || fields[1] == "RemoteAddress:Port":
continue
case fields[0] == "TCP" || fields[0] == "UDP":
if len(fields) < 2 {
continue
}
proto = fields[0]
localAddress, localPort, err = parseIPPort(fields[1])
if err != nil {
return nil, err
}
case fields[0] == "->":
if len(fields) < 6 {
continue
}
remoteAddress, remotePort, err := parseIPPort(fields[1])
if err != nil {
return nil, err
}
weight, err := strconv.ParseUint(fields[3], 10, 64)
if err != nil {
return nil, err
}
activeConn, err := strconv.ParseUint(fields[4], 10, 64)
if err != nil {
return nil, err
}
inactConn, err := strconv.ParseUint(fields[5], 10, 64)
if err != nil {
return nil, err
}
status = append(status, IPVSBackendStatus{
LocalAddress: localAddress,
LocalPort: localPort,
RemoteAddress: remoteAddress,
RemotePort: remotePort,
Proto: proto,
Weight: weight,
ActiveConn: activeConn,
InactConn: inactConn,
})
}
}
return status, nil
}
func parseIPPort(s string) (net.IP, uint16, error) {
tmp := strings.SplitN(s, ":", 2)
if len(tmp) != 2 {
return nil, 0, fmt.Errorf("invalid IP:Port: %s", s)
}
if len(tmp[0]) != 8 && len(tmp[0]) != 32 {
return nil, 0, fmt.Errorf("invalid IP: %s", tmp[0])
}
ip, err := hex.DecodeString(tmp[0])
if err != nil {
return nil, 0, err
}
port, err := strconv.ParseUint(tmp[1], 16, 16)
if err != nil {
return nil, 0, err
}
return ip, uint16(port), nil
}

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package procfs
import (
"fmt"
"io/ioutil"
"regexp"
"strconv"
"strings"
)
var (
statuslineRE = regexp.MustCompile(`(\d+) blocks .*\[(\d+)/(\d+)\] \[[U_]+\]`)
buildlineRE = regexp.MustCompile(`\((\d+)/\d+\)`)
)
// MDStat holds info parsed from /proc/mdstat.
type MDStat struct {
// Name of the device.
Name string
// activity-state of the device.
ActivityState string
// Number of active disks.
DisksActive int64
// Total number of disks the device consists of.
DisksTotal int64
// Number of blocks the device holds.
BlocksTotal int64
// Number of blocks on the device that are in sync.
BlocksSynced int64
}
// ParseMDStat parses an mdstat-file and returns a struct with the relevant infos.
func (fs FS) ParseMDStat() (mdstates []MDStat, err error) {
mdStatusFilePath := fs.Path("mdstat")
content, err := ioutil.ReadFile(mdStatusFilePath)
if err != nil {
return []MDStat{}, fmt.Errorf("error parsing %s: %s", mdStatusFilePath, err)
}
mdStates := []MDStat{}
lines := strings.Split(string(content), "\n")
for i, l := range lines {
if l == "" {
continue
}
if l[0] == ' ' {
continue
}
if strings.HasPrefix(l, "Personalities") || strings.HasPrefix(l, "unused") {
continue
}
mainLine := strings.Split(l, " ")
if len(mainLine) < 3 {
return mdStates, fmt.Errorf("error parsing mdline: %s", l)
}
mdName := mainLine[0]
activityState := mainLine[2]
if len(lines) <= i+3 {
return mdStates, fmt.Errorf(
"error parsing %s: too few lines for md device %s",
mdStatusFilePath,
mdName,
)
}
active, total, size, err := evalStatusline(lines[i+1])
if err != nil {
return mdStates, fmt.Errorf("error parsing %s: %s", mdStatusFilePath, err)
}
// j is the line number of the syncing-line.
j := i + 2
if strings.Contains(lines[i+2], "bitmap") { // skip bitmap line
j = i + 3
}
// If device is syncing at the moment, get the number of currently
// synced bytes, otherwise that number equals the size of the device.
syncedBlocks := size
if strings.Contains(lines[j], "recovery") || strings.Contains(lines[j], "resync") {
syncedBlocks, err = evalBuildline(lines[j])
if err != nil {
return mdStates, fmt.Errorf("error parsing %s: %s", mdStatusFilePath, err)
}
}
mdStates = append(mdStates, MDStat{
Name: mdName,
ActivityState: activityState,
DisksActive: active,
DisksTotal: total,
BlocksTotal: size,
BlocksSynced: syncedBlocks,
})
}
return mdStates, nil
}
func evalStatusline(statusline string) (active, total, size int64, err error) {
matches := statuslineRE.FindStringSubmatch(statusline)
if len(matches) != 4 {
return 0, 0, 0, fmt.Errorf("unexpected statusline: %s", statusline)
}
size, err = strconv.ParseInt(matches[1], 10, 64)
if err != nil {
return 0, 0, 0, fmt.Errorf("unexpected statusline %s: %s", statusline, err)
}
total, err = strconv.ParseInt(matches[2], 10, 64)
if err != nil {
return 0, 0, 0, fmt.Errorf("unexpected statusline %s: %s", statusline, err)
}
active, err = strconv.ParseInt(matches[3], 10, 64)
if err != nil {
return 0, 0, 0, fmt.Errorf("unexpected statusline %s: %s", statusline, err)
}
return active, total, size, nil
}
func evalBuildline(buildline string) (syncedBlocks int64, err error) {
matches := buildlineRE.FindStringSubmatch(buildline)
if len(matches) != 2 {
return 0, fmt.Errorf("unexpected buildline: %s", buildline)
}
syncedBlocks, err = strconv.ParseInt(matches[1], 10, 64)
if err != nil {
return 0, fmt.Errorf("%s in buildline: %s", err, buildline)
}
return syncedBlocks, nil
}

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vendor/github.com/prometheus/procfs/mountstats.go generated vendored Normal file
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package procfs
// While implementing parsing of /proc/[pid]/mountstats, this blog was used
// heavily as a reference:
// https://utcc.utoronto.ca/~cks/space/blog/linux/NFSMountstatsIndex
//
// Special thanks to Chris Siebenmann for all of his posts explaining the
// various statistics available for NFS.
import (
"bufio"
"fmt"
"io"
"strconv"
"strings"
"time"
)
// Constants shared between multiple functions.
const (
deviceEntryLen = 8
fieldBytesLen = 8
fieldEventsLen = 27
statVersion10 = "1.0"
statVersion11 = "1.1"
fieldTransport10Len = 10
fieldTransport11Len = 13
)
// A Mount is a device mount parsed from /proc/[pid]/mountstats.
type Mount struct {
// Name of the device.
Device string
// The mount point of the device.
Mount string
// The filesystem type used by the device.
Type string
// If available additional statistics related to this Mount.
// Use a type assertion to determine if additional statistics are available.
Stats MountStats
}
// A MountStats is a type which contains detailed statistics for a specific
// type of Mount.
type MountStats interface {
mountStats()
}
// A MountStatsNFS is a MountStats implementation for NFSv3 and v4 mounts.
type MountStatsNFS struct {
// The version of statistics provided.
StatVersion string
// The age of the NFS mount.
Age time.Duration
// Statistics related to byte counters for various operations.
Bytes NFSBytesStats
// Statistics related to various NFS event occurrences.
Events NFSEventsStats
// Statistics broken down by filesystem operation.
Operations []NFSOperationStats
// Statistics about the NFS RPC transport.
Transport NFSTransportStats
}
// mountStats implements MountStats.
func (m MountStatsNFS) mountStats() {}
// A NFSBytesStats contains statistics about the number of bytes read and written
// by an NFS client to and from an NFS server.
type NFSBytesStats struct {
// Number of bytes read using the read() syscall.
Read int
// Number of bytes written using the write() syscall.
Write int
// Number of bytes read using the read() syscall in O_DIRECT mode.
DirectRead int
// Number of bytes written using the write() syscall in O_DIRECT mode.
DirectWrite int
// Number of bytes read from the NFS server, in total.
ReadTotal int
// Number of bytes written to the NFS server, in total.
WriteTotal int
// Number of pages read directly via mmap()'d files.
ReadPages int
// Number of pages written directly via mmap()'d files.
WritePages int
}
// A NFSEventsStats contains statistics about NFS event occurrences.
type NFSEventsStats struct {
// Number of times cached inode attributes are re-validated from the server.
InodeRevalidate int
// Number of times cached dentry nodes are re-validated from the server.
DnodeRevalidate int
// Number of times an inode cache is cleared.
DataInvalidate int
// Number of times cached inode attributes are invalidated.
AttributeInvalidate int
// Number of times files or directories have been open()'d.
VFSOpen int
// Number of times a directory lookup has occurred.
VFSLookup int
// Number of times permissions have been checked.
VFSAccess int
// Number of updates (and potential writes) to pages.
VFSUpdatePage int
// Number of pages read directly via mmap()'d files.
VFSReadPage int
// Number of times a group of pages have been read.
VFSReadPages int
// Number of pages written directly via mmap()'d files.
VFSWritePage int
// Number of times a group of pages have been written.
VFSWritePages int
// Number of times directory entries have been read with getdents().
VFSGetdents int
// Number of times attributes have been set on inodes.
VFSSetattr int
// Number of pending writes that have been forcefully flushed to the server.
VFSFlush int
// Number of times fsync() has been called on directories and files.
VFSFsync int
// Number of times locking has been attemped on a file.
VFSLock int
// Number of times files have been closed and released.
VFSFileRelease int
// Unknown. Possibly unused.
CongestionWait int
// Number of times files have been truncated.
Truncation int
// Number of times a file has been grown due to writes beyond its existing end.
WriteExtension int
// Number of times a file was removed while still open by another process.
SillyRename int
// Number of times the NFS server gave less data than expected while reading.
ShortRead int
// Number of times the NFS server wrote less data than expected while writing.
ShortWrite int
// Number of times the NFS server indicated EJUKEBOX; retrieving data from
// offline storage.
JukeboxDelay int
// Number of NFS v4.1+ pNFS reads.
PNFSRead int
// Number of NFS v4.1+ pNFS writes.
PNFSWrite int
}
// A NFSOperationStats contains statistics for a single operation.
type NFSOperationStats struct {
// The name of the operation.
Operation string
// Number of requests performed for this operation.
Requests int
// Number of times an actual RPC request has been transmitted for this operation.
Transmissions int
// Number of times a request has had a major timeout.
MajorTimeouts int
// Number of bytes sent for this operation, including RPC headers and payload.
BytesSent int
// Number of bytes received for this operation, including RPC headers and payload.
BytesReceived int
// Duration all requests spent queued for transmission before they were sent.
CumulativeQueueTime time.Duration
// Duration it took to get a reply back after the request was transmitted.
CumulativeTotalResponseTime time.Duration
// Duration from when a request was enqueued to when it was completely handled.
CumulativeTotalRequestTime time.Duration
}
// A NFSTransportStats contains statistics for the NFS mount RPC requests and
// responses.
type NFSTransportStats struct {
// The local port used for the NFS mount.
Port int
// Number of times the client has had to establish a connection from scratch
// to the NFS server.
Bind int
// Number of times the client has made a TCP connection to the NFS server.
Connect int
// Duration (in jiffies, a kernel internal unit of time) the NFS mount has
// spent waiting for connections to the server to be established.
ConnectIdleTime int
// Duration since the NFS mount last saw any RPC traffic.
IdleTime time.Duration
// Number of RPC requests for this mount sent to the NFS server.
Sends int
// Number of RPC responses for this mount received from the NFS server.
Receives int
// Number of times the NFS server sent a response with a transaction ID
// unknown to this client.
BadTransactionIDs int
// A running counter, incremented on each request as the current difference
// ebetween sends and receives.
CumulativeActiveRequests int
// A running counter, incremented on each request by the current backlog
// queue size.
CumulativeBacklog int
// Stats below only available with stat version 1.1.
// Maximum number of simultaneously active RPC requests ever used.
MaximumRPCSlotsUsed int
// A running counter, incremented on each request as the current size of the
// sending queue.
CumulativeSendingQueue int
// A running counter, incremented on each request as the current size of the
// pending queue.
CumulativePendingQueue int
}
// parseMountStats parses a /proc/[pid]/mountstats file and returns a slice
// of Mount structures containing detailed information about each mount.
// If available, statistics for each mount are parsed as well.
func parseMountStats(r io.Reader) ([]*Mount, error) {
const (
device = "device"
statVersionPrefix = "statvers="
nfs3Type = "nfs"
nfs4Type = "nfs4"
)
var mounts []*Mount
s := bufio.NewScanner(r)
for s.Scan() {
// Only look for device entries in this function
ss := strings.Fields(string(s.Bytes()))
if len(ss) == 0 || ss[0] != device {
continue
}
m, err := parseMount(ss)
if err != nil {
return nil, err
}
// Does this mount also possess statistics information?
if len(ss) > deviceEntryLen {
// Only NFSv3 and v4 are supported for parsing statistics
if m.Type != nfs3Type && m.Type != nfs4Type {
return nil, fmt.Errorf("cannot parse MountStats for fstype %q", m.Type)
}
statVersion := strings.TrimPrefix(ss[8], statVersionPrefix)
stats, err := parseMountStatsNFS(s, statVersion)
if err != nil {
return nil, err
}
m.Stats = stats
}
mounts = append(mounts, m)
}
return mounts, s.Err()
}
// parseMount parses an entry in /proc/[pid]/mountstats in the format:
// device [device] mounted on [mount] with fstype [type]
func parseMount(ss []string) (*Mount, error) {
if len(ss) < deviceEntryLen {
return nil, fmt.Errorf("invalid device entry: %v", ss)
}
// Check for specific words appearing at specific indices to ensure
// the format is consistent with what we expect
format := []struct {
i int
s string
}{
{i: 0, s: "device"},
{i: 2, s: "mounted"},
{i: 3, s: "on"},
{i: 5, s: "with"},
{i: 6, s: "fstype"},
}
for _, f := range format {
if ss[f.i] != f.s {
return nil, fmt.Errorf("invalid device entry: %v", ss)
}
}
return &Mount{
Device: ss[1],
Mount: ss[4],
Type: ss[7],
}, nil
}
// parseMountStatsNFS parses a MountStatsNFS by scanning additional information
// related to NFS statistics.
func parseMountStatsNFS(s *bufio.Scanner, statVersion string) (*MountStatsNFS, error) {
// Field indicators for parsing specific types of data
const (
fieldAge = "age:"
fieldBytes = "bytes:"
fieldEvents = "events:"
fieldPerOpStats = "per-op"
fieldTransport = "xprt:"
)
stats := &MountStatsNFS{
StatVersion: statVersion,
}
for s.Scan() {
ss := strings.Fields(string(s.Bytes()))
if len(ss) == 0 {
break
}
if len(ss) < 2 {
return nil, fmt.Errorf("not enough information for NFS stats: %v", ss)
}
switch ss[0] {
case fieldAge:
// Age integer is in seconds
d, err := time.ParseDuration(ss[1] + "s")
if err != nil {
return nil, err
}
stats.Age = d
case fieldBytes:
bstats, err := parseNFSBytesStats(ss[1:])
if err != nil {
return nil, err
}
stats.Bytes = *bstats
case fieldEvents:
estats, err := parseNFSEventsStats(ss[1:])
if err != nil {
return nil, err
}
stats.Events = *estats
case fieldTransport:
if len(ss) < 3 {
return nil, fmt.Errorf("not enough information for NFS transport stats: %v", ss)
}
tstats, err := parseNFSTransportStats(ss[2:], statVersion)
if err != nil {
return nil, err
}
stats.Transport = *tstats
}
// When encountering "per-operation statistics", we must break this
// loop and parse them seperately to ensure we can terminate parsing
// before reaching another device entry; hence why this 'if' statement
// is not just another switch case
if ss[0] == fieldPerOpStats {
break
}
}
if err := s.Err(); err != nil {
return nil, err
}
// NFS per-operation stats appear last before the next device entry
perOpStats, err := parseNFSOperationStats(s)
if err != nil {
return nil, err
}
stats.Operations = perOpStats
return stats, nil
}
// parseNFSBytesStats parses a NFSBytesStats line using an input set of
// integer fields.
func parseNFSBytesStats(ss []string) (*NFSBytesStats, error) {
if len(ss) != fieldBytesLen {
return nil, fmt.Errorf("invalid NFS bytes stats: %v", ss)
}
ns := make([]int, 0, fieldBytesLen)
for _, s := range ss {
n, err := strconv.Atoi(s)
if err != nil {
return nil, err
}
ns = append(ns, n)
}
return &NFSBytesStats{
Read: ns[0],
Write: ns[1],
DirectRead: ns[2],
DirectWrite: ns[3],
ReadTotal: ns[4],
WriteTotal: ns[5],
ReadPages: ns[6],
WritePages: ns[7],
}, nil
}
// parseNFSEventsStats parses a NFSEventsStats line using an input set of
// integer fields.
func parseNFSEventsStats(ss []string) (*NFSEventsStats, error) {
if len(ss) != fieldEventsLen {
return nil, fmt.Errorf("invalid NFS events stats: %v", ss)
}
ns := make([]int, 0, fieldEventsLen)
for _, s := range ss {
n, err := strconv.Atoi(s)
if err != nil {
return nil, err
}
ns = append(ns, n)
}
return &NFSEventsStats{
InodeRevalidate: ns[0],
DnodeRevalidate: ns[1],
DataInvalidate: ns[2],
AttributeInvalidate: ns[3],
VFSOpen: ns[4],
VFSLookup: ns[5],
VFSAccess: ns[6],
VFSUpdatePage: ns[7],
VFSReadPage: ns[8],
VFSReadPages: ns[9],
VFSWritePage: ns[10],
VFSWritePages: ns[11],
VFSGetdents: ns[12],
VFSSetattr: ns[13],
VFSFlush: ns[14],
VFSFsync: ns[15],
VFSLock: ns[16],
VFSFileRelease: ns[17],
CongestionWait: ns[18],
Truncation: ns[19],
WriteExtension: ns[20],
SillyRename: ns[21],
ShortRead: ns[22],
ShortWrite: ns[23],
JukeboxDelay: ns[24],
PNFSRead: ns[25],
PNFSWrite: ns[26],
}, nil
}
// parseNFSOperationStats parses a slice of NFSOperationStats by scanning
// additional information about per-operation statistics until an empty
// line is reached.
func parseNFSOperationStats(s *bufio.Scanner) ([]NFSOperationStats, error) {
const (
// Number of expected fields in each per-operation statistics set
numFields = 9
)
var ops []NFSOperationStats
for s.Scan() {
ss := strings.Fields(string(s.Bytes()))
if len(ss) == 0 {
// Must break when reading a blank line after per-operation stats to
// enable top-level function to parse the next device entry
break
}
if len(ss) != numFields {
return nil, fmt.Errorf("invalid NFS per-operations stats: %v", ss)
}
// Skip string operation name for integers
ns := make([]int, 0, numFields-1)
for _, st := range ss[1:] {
n, err := strconv.Atoi(st)
if err != nil {
return nil, err
}
ns = append(ns, n)
}
ops = append(ops, NFSOperationStats{
Operation: strings.TrimSuffix(ss[0], ":"),
Requests: ns[0],
Transmissions: ns[1],
MajorTimeouts: ns[2],
BytesSent: ns[3],
BytesReceived: ns[4],
CumulativeQueueTime: time.Duration(ns[5]) * time.Millisecond,
CumulativeTotalResponseTime: time.Duration(ns[6]) * time.Millisecond,
CumulativeTotalRequestTime: time.Duration(ns[7]) * time.Millisecond,
})
}
return ops, s.Err()
}
// parseNFSTransportStats parses a NFSTransportStats line using an input set of
// integer fields matched to a specific stats version.
func parseNFSTransportStats(ss []string, statVersion string) (*NFSTransportStats, error) {
switch statVersion {
case statVersion10:
if len(ss) != fieldTransport10Len {
return nil, fmt.Errorf("invalid NFS transport stats 1.0 statement: %v", ss)
}
case statVersion11:
if len(ss) != fieldTransport11Len {
return nil, fmt.Errorf("invalid NFS transport stats 1.1 statement: %v", ss)
}
default:
return nil, fmt.Errorf("unrecognized NFS transport stats version: %q", statVersion)
}
// Allocate enough for v1.1 stats since zero value for v1.1 stats will be okay
// in a v1.0 response
ns := make([]int, 0, fieldTransport11Len)
for _, s := range ss {
n, err := strconv.Atoi(s)
if err != nil {
return nil, err
}
ns = append(ns, n)
}
return &NFSTransportStats{
Port: ns[0],
Bind: ns[1],
Connect: ns[2],
ConnectIdleTime: ns[3],
IdleTime: time.Duration(ns[4]) * time.Second,
Sends: ns[5],
Receives: ns[6],
BadTransactionIDs: ns[7],
CumulativeActiveRequests: ns[8],
CumulativeBacklog: ns[9],
MaximumRPCSlotsUsed: ns[10],
CumulativeSendingQueue: ns[11],
CumulativePendingQueue: ns[12],
}, nil
}

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vendor/github.com/prometheus/procfs/proc.go generated vendored Normal file
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package procfs
import (
"fmt"
"io/ioutil"
"os"
"strconv"
"strings"
)
// Proc provides information about a running process.
type Proc struct {
// The process ID.
PID int
fs FS
}
// Procs represents a list of Proc structs.
type Procs []Proc
func (p Procs) Len() int { return len(p) }
func (p Procs) Swap(i, j int) { p[i], p[j] = p[j], p[i] }
func (p Procs) Less(i, j int) bool { return p[i].PID < p[j].PID }
// Self returns a process for the current process read via /proc/self.
func Self() (Proc, error) {
fs, err := NewFS(DefaultMountPoint)
if err != nil {
return Proc{}, err
}
return fs.Self()
}
// NewProc returns a process for the given pid under /proc.
func NewProc(pid int) (Proc, error) {
fs, err := NewFS(DefaultMountPoint)
if err != nil {
return Proc{}, err
}
return fs.NewProc(pid)
}
// AllProcs returns a list of all currently available processes under /proc.
func AllProcs() (Procs, error) {
fs, err := NewFS(DefaultMountPoint)
if err != nil {
return Procs{}, err
}
return fs.AllProcs()
}
// Self returns a process for the current process.
func (fs FS) Self() (Proc, error) {
p, err := os.Readlink(fs.Path("self"))
if err != nil {
return Proc{}, err
}
pid, err := strconv.Atoi(strings.Replace(p, string(fs), "", -1))
if err != nil {
return Proc{}, err
}
return fs.NewProc(pid)
}
// NewProc returns a process for the given pid.
func (fs FS) NewProc(pid int) (Proc, error) {
if _, err := os.Stat(fs.Path(strconv.Itoa(pid))); err != nil {
return Proc{}, err
}
return Proc{PID: pid, fs: fs}, nil
}
// AllProcs returns a list of all currently available processes.
func (fs FS) AllProcs() (Procs, error) {
d, err := os.Open(fs.Path())
if err != nil {
return Procs{}, err
}
defer d.Close()
names, err := d.Readdirnames(-1)
if err != nil {
return Procs{}, fmt.Errorf("could not read %s: %s", d.Name(), err)
}
p := Procs{}
for _, n := range names {
pid, err := strconv.ParseInt(n, 10, 64)
if err != nil {
continue
}
p = append(p, Proc{PID: int(pid), fs: fs})
}
return p, nil
}
// CmdLine returns the command line of a process.
func (p Proc) CmdLine() ([]string, error) {
f, err := os.Open(p.path("cmdline"))
if err != nil {
return nil, err
}
defer f.Close()
data, err := ioutil.ReadAll(f)
if err != nil {
return nil, err
}
if len(data) < 1 {
return []string{}, nil
}
return strings.Split(string(data[:len(data)-1]), string(byte(0))), nil
}
// Comm returns the command name of a process.
func (p Proc) Comm() (string, error) {
f, err := os.Open(p.path("comm"))
if err != nil {
return "", err
}
defer f.Close()
data, err := ioutil.ReadAll(f)
if err != nil {
return "", err
}
return strings.TrimSpace(string(data)), nil
}
// Executable returns the absolute path of the executable command of a process.
func (p Proc) Executable() (string, error) {
exe, err := os.Readlink(p.path("exe"))
if os.IsNotExist(err) {
return "", nil
}
return exe, err
}
// FileDescriptors returns the currently open file descriptors of a process.
func (p Proc) FileDescriptors() ([]uintptr, error) {
names, err := p.fileDescriptors()
if err != nil {
return nil, err
}
fds := make([]uintptr, len(names))
for i, n := range names {
fd, err := strconv.ParseInt(n, 10, 32)
if err != nil {
return nil, fmt.Errorf("could not parse fd %s: %s", n, err)
}
fds[i] = uintptr(fd)
}
return fds, nil
}
// FileDescriptorTargets returns the targets of all file descriptors of a process.
// If a file descriptor is not a symlink to a file (like a socket), that value will be the empty string.
func (p Proc) FileDescriptorTargets() ([]string, error) {
names, err := p.fileDescriptors()
if err != nil {
return nil, err
}
targets := make([]string, len(names))
for i, name := range names {
target, err := os.Readlink(p.path("fd", name))
if err == nil {
targets[i] = target
}
}
return targets, nil
}
// FileDescriptorsLen returns the number of currently open file descriptors of
// a process.
func (p Proc) FileDescriptorsLen() (int, error) {
fds, err := p.fileDescriptors()
if err != nil {
return 0, err
}
return len(fds), nil
}
// MountStats retrieves statistics and configuration for mount points in a
// process's namespace.
func (p Proc) MountStats() ([]*Mount, error) {
f, err := os.Open(p.path("mountstats"))
if err != nil {
return nil, err
}
defer f.Close()
return parseMountStats(f)
}
func (p Proc) fileDescriptors() ([]string, error) {
d, err := os.Open(p.path("fd"))
if err != nil {
return nil, err
}
defer d.Close()
names, err := d.Readdirnames(-1)
if err != nil {
return nil, fmt.Errorf("could not read %s: %s", d.Name(), err)
}
return names, nil
}
func (p Proc) path(pa ...string) string {
return p.fs.Path(append([]string{strconv.Itoa(p.PID)}, pa...)...)
}

55
vendor/github.com/prometheus/procfs/proc_io.go generated vendored Normal file
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package procfs
import (
"fmt"
"io/ioutil"
"os"
)
// ProcIO models the content of /proc/<pid>/io.
type ProcIO struct {
// Chars read.
RChar uint64
// Chars written.
WChar uint64
// Read syscalls.
SyscR uint64
// Write syscalls.
SyscW uint64
// Bytes read.
ReadBytes uint64
// Bytes written.
WriteBytes uint64
// Bytes written, but taking into account truncation. See
// Documentation/filesystems/proc.txt in the kernel sources for
// detailed explanation.
CancelledWriteBytes int64
}
// NewIO creates a new ProcIO instance from a given Proc instance.
func (p Proc) NewIO() (ProcIO, error) {
pio := ProcIO{}
f, err := os.Open(p.path("io"))
if err != nil {
return pio, err
}
defer f.Close()
data, err := ioutil.ReadAll(f)
if err != nil {
return pio, err
}
ioFormat := "rchar: %d\nwchar: %d\nsyscr: %d\nsyscw: %d\n" +
"read_bytes: %d\nwrite_bytes: %d\n" +
"cancelled_write_bytes: %d\n"
_, 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
}

137
vendor/github.com/prometheus/procfs/proc_limits.go generated vendored Normal file
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package procfs
import (
"bufio"
"fmt"
"os"
"regexp"
"strconv"
)
// ProcLimits represents the soft limits for each of the process's resource
// limits. For more information see getrlimit(2):
// http://man7.org/linux/man-pages/man2/getrlimit.2.html.
type ProcLimits struct {
// CPU time limit in seconds.
CPUTime int
// Maximum size of files that the process may create.
FileSize int
// Maximum size of the process's data segment (initialized data,
// uninitialized data, and heap).
DataSize int
// Maximum size of the process stack in bytes.
StackSize int
// Maximum size of a core file.
CoreFileSize int
// Limit of the process's resident set in pages.
ResidentSet int
// Maximum number of processes that can be created for the real user ID of
// the calling process.
Processes int
// Value one greater than the maximum file descriptor number that can be
// opened by this process.
OpenFiles int
// Maximum number of bytes of memory that may be locked into RAM.
LockedMemory int
// Maximum size of the process's virtual memory address space in bytes.
AddressSpace int
// Limit on the combined number of flock(2) locks and fcntl(2) leases that
// this process may establish.
FileLocks int
// Limit of signals that may be queued for the real user ID of the calling
// process.
PendingSignals int
// 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
// Limit of the nice priority set using setpriority(2) or nice(2).
NicePriority int
// Limit of the real-time priority set using sched_setscheduler(2) or
// sched_setparam(2).
RealtimePriority int
// 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
}
const (
limitsFields = 3
limitsUnlimited = "unlimited"
)
var (
limitsDelimiter = regexp.MustCompile(" +")
)
// NewLimits returns the current soft limits of the process.
func (p Proc) NewLimits() (ProcLimits, error) {
f, err := os.Open(p.path("limits"))
if err != nil {
return ProcLimits{}, err
}
defer f.Close()
var (
l = ProcLimits{}
s = bufio.NewScanner(f)
)
for s.Scan() {
fields := limitsDelimiter.Split(s.Text(), limitsFields)
if len(fields) != limitsFields {
return ProcLimits{}, fmt.Errorf(
"couldn't parse %s line %s", f.Name(), s.Text())
}
switch fields[0] {
case "Max cpu time":
l.CPUTime, err = parseInt(fields[1])
case "Max file size":
l.FileSize, err = parseInt(fields[1])
case "Max data size":
l.DataSize, err = parseInt(fields[1])
case "Max stack size":
l.StackSize, err = parseInt(fields[1])
case "Max core file size":
l.CoreFileSize, err = parseInt(fields[1])
case "Max resident set":
l.ResidentSet, err = parseInt(fields[1])
case "Max processes":
l.Processes, err = parseInt(fields[1])
case "Max open files":
l.OpenFiles, err = parseInt(fields[1])
case "Max locked memory":
l.LockedMemory, err = parseInt(fields[1])
case "Max address space":
l.AddressSpace, err = parseInt(fields[1])
case "Max file locks":
l.FileLocks, err = parseInt(fields[1])
case "Max pending signals":
l.PendingSignals, err = parseInt(fields[1])
case "Max msgqueue size":
l.MsqqueueSize, err = parseInt(fields[1])
case "Max nice priority":
l.NicePriority, err = parseInt(fields[1])
case "Max realtime priority":
l.RealtimePriority, err = parseInt(fields[1])
case "Max realtime timeout":
l.RealtimeTimeout, err = parseInt(fields[1])
}
if err != nil {
return ProcLimits{}, err
}
}
return l, s.Err()
}
func parseInt(s string) (int, error) {
if s == limitsUnlimited {
return -1, nil
}
i, err := strconv.ParseInt(s, 10, 32)
if err != nil {
return 0, fmt.Errorf("couldn't parse value %s: %s", s, err)
}
return int(i), nil
}

175
vendor/github.com/prometheus/procfs/proc_stat.go generated vendored Normal file
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package procfs
import (
"bytes"
"fmt"
"io/ioutil"
"os"
)
// Originally, this USER_HZ value was dynamically retrieved via a sysconf call
// which required cgo. However, that caused a lot of problems regarding
// cross-compilation. Alternatives such as running a binary to determine the
// value, or trying to derive it in some other way were all problematic. After
// much research it was determined that USER_HZ is actually hardcoded to 100 on
// all Go-supported platforms as of the time of this writing. This is why we
// decided to hardcode it here as well. It is not impossible that there could
// be systems with exceptions, but they should be very exotic edge cases, and
// in that case, the worst outcome will be two misreported metrics.
//
// See also the following discussions:
//
// - https://github.com/prometheus/node_exporter/issues/52
// - https://github.com/prometheus/procfs/pull/2
// - http://stackoverflow.com/questions/17410841/how-does-user-hz-solve-the-jiffy-scaling-issue
const userHZ = 100
// ProcStat provides status information about the process,
// read from /proc/[pid]/stat.
type ProcStat struct {
// The process ID.
PID int
// The filename of the executable.
Comm string
// The process state.
State string
// The PID of the parent of this process.
PPID int
// The process group ID of the process.
PGRP int
// The session ID of the process.
Session int
// The controlling terminal of the process.
TTY int
// The ID of the foreground process group of the controlling terminal of
// the process.
TPGID int
// The kernel flags word of the process.
Flags uint
// The number of minor faults the process has made which have not required
// loading a memory page from disk.
MinFlt uint
// The number of minor faults that the process's waited-for children have
// made.
CMinFlt uint
// The number of major faults the process has made which have required
// loading a memory page from disk.
MajFlt uint
// The number of major faults that the process's waited-for children have
// made.
CMajFlt uint
// Amount of time that this process has been scheduled in user mode,
// measured in clock ticks.
UTime uint
// Amount of time that this process has been scheduled in kernel mode,
// measured in clock ticks.
STime uint
// Amount of time that this process's waited-for children have been
// scheduled in user mode, measured in clock ticks.
CUTime uint
// Amount of time that this process's waited-for children have been
// scheduled in kernel mode, measured in clock ticks.
CSTime uint
// For processes running a real-time scheduling policy, this is the negated
// scheduling priority, minus one.
Priority int
// The nice value, a value in the range 19 (low priority) to -20 (high
// priority).
Nice int
// Number of threads in this process.
NumThreads int
// The time the process started after system boot, the value is expressed
// in clock ticks.
Starttime uint64
// Virtual memory size in bytes.
VSize int
// Resident set size in pages.
RSS int
fs FS
}
// NewStat returns the current status information of the process.
func (p Proc) NewStat() (ProcStat, error) {
f, err := os.Open(p.path("stat"))
if err != nil {
return ProcStat{}, err
}
defer f.Close()
data, err := ioutil.ReadAll(f)
if err != nil {
return ProcStat{}, err
}
var (
ignore int
s = ProcStat{PID: p.PID, fs: p.fs}
l = bytes.Index(data, []byte("("))
r = bytes.LastIndex(data, []byte(")"))
)
if l < 0 || r < 0 {
return ProcStat{}, fmt.Errorf(
"unexpected format, couldn't extract comm: %s",
data,
)
}
s.Comm = string(data[l+1 : r])
_, err = fmt.Fscan(
bytes.NewBuffer(data[r+2:]),
&s.State,
&s.PPID,
&s.PGRP,
&s.Session,
&s.TTY,
&s.TPGID,
&s.Flags,
&s.MinFlt,
&s.CMinFlt,
&s.MajFlt,
&s.CMajFlt,
&s.UTime,
&s.STime,
&s.CUTime,
&s.CSTime,
&s.Priority,
&s.Nice,
&s.NumThreads,
&ignore,
&s.Starttime,
&s.VSize,
&s.RSS,
)
if err != nil {
return ProcStat{}, err
}
return s, nil
}
// VirtualMemory returns the virtual memory size in bytes.
func (s ProcStat) VirtualMemory() int {
return s.VSize
}
// ResidentMemory returns the resident memory size in bytes.
func (s ProcStat) ResidentMemory() int {
return s.RSS * os.Getpagesize()
}
// StartTime returns the unix timestamp of the process in seconds.
func (s ProcStat) StartTime() (float64, error) {
stat, err := s.fs.NewStat()
if err != nil {
return 0, err
}
return float64(stat.BootTime) + (float64(s.Starttime) / userHZ), nil
}
// CPUTime returns the total CPU user and system time in seconds.
func (s ProcStat) CPUTime() float64 {
return float64(s.UTime+s.STime) / userHZ
}

56
vendor/github.com/prometheus/procfs/stat.go generated vendored Normal file
View file

@ -0,0 +1,56 @@
package procfs
import (
"bufio"
"fmt"
"os"
"strconv"
"strings"
)
// Stat represents kernel/system statistics.
type Stat struct {
// Boot time in seconds since the Epoch.
BootTime int64
}
// NewStat returns kernel/system statistics read from /proc/stat.
func NewStat() (Stat, error) {
fs, err := NewFS(DefaultMountPoint)
if err != nil {
return Stat{}, err
}
return fs.NewStat()
}
// NewStat returns an information about current kernel/system statistics.
func (fs FS) NewStat() (Stat, error) {
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") {
continue
}
fields := strings.Fields(line)
if len(fields) != 2 {
return Stat{}, fmt.Errorf("couldn't parse %s line %s", f.Name(), line)
}
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 {
return Stat{}, fmt.Errorf("couldn't parse %s: %s", f.Name(), err)
}
return Stat{}, fmt.Errorf("couldn't parse %s, missing btime", f.Name())
}