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Bump all vendoring (#1612)

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Update all vendoring to current releases.

Signed-off-by: Ben Kochie <superq@gmail.com>
This commit is contained in:
Ben Kochie 2020-02-18 13:27:11 +01:00 • committed by GitHub
commit 1567cefdae
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GPG key ID: 4AEE18F83AFDEB23
511 changed files with 98653 additions and 38115 deletions
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48
vendor/github.com/prometheus/client_golang/prometheus/counter.go generated vendored
View file

@ -17,6 +17,7 @@ import (
"errors"
"math"
"sync/atomic"
"time"
dto "github.com/prometheus/client_model/go"
)
@ -42,11 +43,27 @@ type Counter interface {
Add(float64)
}
// ExemplarAdder is implemented by Counters that offer the option of adding a
// value to the Counter together with an exemplar. Its AddWithExemplar method
// works like the Add method of the Counter interface but also replaces the
// currently saved exemplar (if any) with a new one, created from the provided
// value, the current time as timestamp, and the provided labels. Empty Labels
// will lead to a valid (label-less) exemplar. But if Labels is nil, the current
// exemplar is left in place. AddWithExemplar panics if the value is < 0, if any
// of the provided labels are invalid, or if the provided labels contain more
// than 64 runes in total.
type ExemplarAdder interface {
AddWithExemplar(value float64, exemplar Labels)
}
// CounterOpts is an alias for Opts. See there for doc comments.
type CounterOpts Opts
// NewCounter creates a new Counter based on the provided CounterOpts.
//
// The returned implementation also implements ExemplarAdder. It is safe to
// perform the corresponding type assertion.
//
// The returned implementation tracks the counter value in two separate
// variables, a float64 and a uint64. The latter is used to track calls of the
// Inc method and calls of the Add method with a value that can be represented
@ -61,7 +78,7 @@ func NewCounter(opts CounterOpts) Counter {
nil,
opts.ConstLabels,
)
result := &counter{desc: desc, labelPairs: desc.constLabelPairs}
result := &counter{desc: desc, labelPairs: desc.constLabelPairs, now: time.Now}
result.init(result) // Init self-collection.
return result
}
@ -78,6 +95,9 @@ type counter struct {
desc *Desc
labelPairs []*dto.LabelPair
exemplar atomic.Value // Containing nil or a *dto.Exemplar.
now func() time.Time // To mock out time.Now() for testing.
}
func (c *counter) Desc() *Desc {
@ -88,6 +108,7 @@ func (c *counter) Add(v float64) {
if v < 0 {
panic(errors.New("counter cannot decrease in value"))
}
ival := uint64(v)
if float64(ival) == v {
atomic.AddUint64(&c.valInt, ival)
@ -103,6 +124,11 @@ func (c *counter) Add(v float64) {
}
}
func (c *counter) AddWithExemplar(v float64, e Labels) {
c.Add(v)
c.updateExemplar(v, e)
}
func (c *counter) Inc() {
atomic.AddUint64(&c.valInt, 1)
}
@ -112,7 +138,23 @@ func (c *counter) Write(out *dto.Metric) error {
ival := atomic.LoadUint64(&c.valInt)
val := fval + float64(ival)
return populateMetric(CounterValue, val, c.labelPairs, out)
var exemplar *dto.Exemplar
if e := c.exemplar.Load(); e != nil {
exemplar = e.(*dto.Exemplar)
}
return populateMetric(CounterValue, val, c.labelPairs, exemplar, out)
}
func (c *counter) updateExemplar(v float64, l Labels) {
if l == nil {
return
}
e, err := newExemplar(v, c.now(), l)
if err != nil {
panic(err)
}
c.exemplar.Store(e)
}
// CounterVec is a Collector that bundles a set of Counters that all share the
@ -138,7 +180,7 @@ func NewCounterVec(opts CounterOpts, labelNames []string) *CounterVec {
if len(lvs) != len(desc.variableLabels) {
panic(makeInconsistentCardinalityError(desc.fqName, desc.variableLabels, lvs))
}
result := &counter{desc: desc, labelPairs: makeLabelPairs(desc, lvs)}
result := &counter{desc: desc, labelPairs: makeLabelPairs(desc, lvs), now: time.Now}
result.init(result) // Init self-collection.
return result
}),

21
vendor/github.com/prometheus/client_golang/prometheus/desc.go generated vendored
View file

@ -19,6 +19,7 @@ import (
"sort"
"strings"
"github.com/cespare/xxhash/v2"
"github.com/golang/protobuf/proto"
"github.com/prometheus/common/model"
@ -126,24 +127,24 @@ func NewDesc(fqName, help string, variableLabels []string, constLabels Labels) *
return d
}
vh := hashNew()
xxh := xxhash.New()
for _, val := range labelValues {
vh = hashAdd(vh, val)
vh = hashAddByte(vh, separatorByte)
xxh.WriteString(val)
xxh.Write(separatorByteSlice)
}
d.id = vh
d.id = xxh.Sum64()
// Sort labelNames so that order doesn't matter for the hash.
sort.Strings(labelNames)
// Now hash together (in this order) the help string and the sorted
// label names.
lh := hashNew()
lh = hashAdd(lh, help)
lh = hashAddByte(lh, separatorByte)
xxh.Reset()
xxh.WriteString(help)
xxh.Write(separatorByteSlice)
for _, labelName := range labelNames {
lh = hashAdd(lh, labelName)
lh = hashAddByte(lh, separatorByte)
xxh.WriteString(labelName)
xxh.Write(separatorByteSlice)
}
d.dimHash = lh
d.dimHash = xxh.Sum64()
d.constLabelPairs = make([]*dto.LabelPair, 0, len(constLabels))
for n, v := range constLabels {

11
vendor/github.com/prometheus/client_golang/prometheus/gauge.go generated vendored
View file

@ -123,7 +123,7 @@ func (g *gauge) Sub(val float64) {
func (g *gauge) Write(out *dto.Metric) error {
val := math.Float64frombits(atomic.LoadUint64(&g.valBits))
return populateMetric(GaugeValue, val, g.labelPairs, out)
return populateMetric(GaugeValue, val, g.labelPairs, nil, out)
}
// GaugeVec is a Collector that bundles a set of Gauges that all share the same
@ -273,9 +273,12 @@ type GaugeFunc interface {
// NewGaugeFunc creates a new GaugeFunc based on the provided GaugeOpts. The
// value reported is determined by calling the given function from within the
// Write method. Take into account that metric collection may happen
// concurrently. If that results in concurrent calls to Write, like in the case
// where a GaugeFunc is directly registered with Prometheus, the provided
// function must be concurrency-safe.
// concurrently. Therefore, it must be safe to call the provided function
// concurrently.
//
// NewGaugeFunc is a good way to create an “info” style metric with a constant
// value of 1. Example:
// https://github.com/prometheus/common/blob/8558a5b7db3c84fa38b4766966059a7bd5bfa2ee/version/info.go#L36-L56
func NewGaugeFunc(opts GaugeOpts, function func() float64) GaugeFunc {
return newValueFunc(NewDesc(
BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),

2
vendor/github.com/prometheus/client_golang/prometheus/go_collector.go generated vendored
View file

@ -73,7 +73,7 @@ func NewGoCollector() Collector {
nil, nil),
gcDesc: NewDesc(
"go_gc_duration_seconds",
"A summary of the GC invocation durations.",
"A summary of the pause duration of garbage collection cycles.",
nil, nil),
goInfoDesc: NewDesc(
"go_info",

114
vendor/github.com/prometheus/client_golang/prometheus/histogram.go generated vendored
View file

@ -20,6 +20,7 @@ import (
"sort"
"sync"
"sync/atomic"
"time"
"github.com/golang/protobuf/proto"
@ -138,7 +139,7 @@ type HistogramOpts struct {
// better covered by target labels set by the scraping Prometheus
// server, or by one specific metric (e.g. a build_info or a
// machine_role metric). See also
// https://prometheus.io/docs/instrumenting/writing_exporters/#target-labels,-not-static-scraped-labels
// https://prometheus.io/docs/instrumenting/writing_exporters/#target-labels-not-static-scraped-labels
ConstLabels Labels
// Buckets defines the buckets into which observations are counted. Each
@ -151,6 +152,10 @@ type HistogramOpts struct {
// NewHistogram creates a new Histogram based on the provided HistogramOpts. It
// panics if the buckets in HistogramOpts are not in strictly increasing order.
//
// The returned implementation also implements ExemplarObserver. It is safe to
// perform the corresponding type assertion. Exemplars are tracked separately
// for each bucket.
func NewHistogram(opts HistogramOpts) Histogram {
return newHistogram(
NewDesc(
@ -187,7 +192,8 @@ func newHistogram(desc *Desc, opts HistogramOpts, labelValues ...string) Histogr
desc: desc,
upperBounds: opts.Buckets,
labelPairs: makeLabelPairs(desc, labelValues),
counts: [2]*histogramCounts{&histogramCounts{}, &histogramCounts{}},
counts: [2]*histogramCounts{{}, {}},
now: time.Now,
}
for i, upperBound := range h.upperBounds {
if i < len(h.upperBounds)-1 {
@ -205,9 +211,10 @@ func newHistogram(desc *Desc, opts HistogramOpts, labelValues ...string) Histogr
}
}
// Finally we know the final length of h.upperBounds and can make buckets
// for both counts:
// for both counts as well as exemplars:
h.counts[0].buckets = make([]uint64, len(h.upperBounds))
h.counts[1].buckets = make([]uint64, len(h.upperBounds))
h.exemplars = make([]atomic.Value, len(h.upperBounds)+1)
h.init(h) // Init self-collection.
return h
@ -254,6 +261,9 @@ type histogram struct {
upperBounds []float64
labelPairs []*dto.LabelPair
exemplars []atomic.Value // One more than buckets (to include +Inf), each a *dto.Exemplar.
now func() time.Time // To mock out time.Now() for testing.
}
func (h *histogram) Desc() *Desc {
@ -261,36 +271,13 @@ func (h *histogram) Desc() *Desc {
}
func (h *histogram) Observe(v float64) {
// TODO(beorn7): For small numbers of buckets (<30), a linear search is
// slightly faster than the binary search. If we really care, we could
// switch from one search strategy to the other depending on the number
// of buckets.
//
// Microbenchmarks (BenchmarkHistogramNoLabels):
// 11 buckets: 38.3 ns/op linear - binary 48.7 ns/op
// 100 buckets: 78.1 ns/op linear - binary 54.9 ns/op
// 300 buckets: 154 ns/op linear - binary 61.6 ns/op
i := sort.SearchFloat64s(h.upperBounds, v)
h.observe(v, h.findBucket(v))
}
// We increment h.countAndHotIdx so that the counter in the lower
// 63 bits gets incremented. At the same time, we get the new value
// back, which we can use to find the currently-hot counts.
n := atomic.AddUint64(&h.countAndHotIdx, 1)
hotCounts := h.counts[n>>63]
if i < len(h.upperBounds) {
atomic.AddUint64(&hotCounts.buckets[i], 1)
}
for {
oldBits := atomic.LoadUint64(&hotCounts.sumBits)
newBits := math.Float64bits(math.Float64frombits(oldBits) + v)
if atomic.CompareAndSwapUint64(&hotCounts.sumBits, oldBits, newBits) {
break
}
}
// Increment count last as we take it as a signal that the observation
// is complete.
atomic.AddUint64(&hotCounts.count, 1)
func (h *histogram) ObserveWithExemplar(v float64, e Labels) {
i := h.findBucket(v)
h.observe(v, i)
h.updateExemplar(v, i, e)
}
func (h *histogram) Write(out *dto.Metric) error {
@ -329,6 +316,18 @@ func (h *histogram) Write(out *dto.Metric) error {
CumulativeCount: proto.Uint64(cumCount),
UpperBound: proto.Float64(upperBound),
}
if e := h.exemplars[i].Load(); e != nil {
his.Bucket[i].Exemplar = e.(*dto.Exemplar)
}
}
// If there is an exemplar for the +Inf bucket, we have to add that bucket explicitly.
if e := h.exemplars[len(h.upperBounds)].Load(); e != nil {
b := &dto.Bucket{
CumulativeCount: proto.Uint64(count),
UpperBound: proto.Float64(math.Inf(1)),
Exemplar: e.(*dto.Exemplar),
}
his.Bucket = append(his.Bucket, b)
}
out.Histogram = his
@ -352,6 +351,57 @@ func (h *histogram) Write(out *dto.Metric) error {
return nil
}
// findBucket returns the index of the bucket for the provided value, or
// len(h.upperBounds) for the +Inf bucket.
func (h *histogram) findBucket(v float64) int {
// TODO(beorn7): For small numbers of buckets (<30), a linear search is
// slightly faster than the binary search. If we really care, we could
// switch from one search strategy to the other depending on the number
// of buckets.
//
// Microbenchmarks (BenchmarkHistogramNoLabels):
// 11 buckets: 38.3 ns/op linear - binary 48.7 ns/op
// 100 buckets: 78.1 ns/op linear - binary 54.9 ns/op
// 300 buckets: 154 ns/op linear - binary 61.6 ns/op
return sort.SearchFloat64s(h.upperBounds, v)
}
// observe is the implementation for Observe without the findBucket part.
func (h *histogram) observe(v float64, bucket int) {
// We increment h.countAndHotIdx so that the counter in the lower
// 63 bits gets incremented. At the same time, we get the new value
// back, which we can use to find the currently-hot counts.
n := atomic.AddUint64(&h.countAndHotIdx, 1)
hotCounts := h.counts[n>>63]
if bucket < len(h.upperBounds) {
atomic.AddUint64(&hotCounts.buckets[bucket], 1)
}
for {
oldBits := atomic.LoadUint64(&hotCounts.sumBits)
newBits := math.Float64bits(math.Float64frombits(oldBits) + v)
if atomic.CompareAndSwapUint64(&hotCounts.sumBits, oldBits, newBits) {
break
}
}
// Increment count last as we take it as a signal that the observation
// is complete.
atomic.AddUint64(&hotCounts.count, 1)
}
// updateExemplar replaces the exemplar for the provided bucket. With empty
// labels, it's a no-op. It panics if any of the labels is invalid.
func (h *histogram) updateExemplar(v float64, bucket int, l Labels) {
if l == nil {
return
}
e, err := newExemplar(v, h.now(), l)
if err != nil {
panic(err)
}
h.exemplars[bucket].Store(e)
}
// HistogramVec is a Collector that bundles a set of Histograms that all share the
// same Desc, but have different values for their variable labels. This is used
// if you want to count the same thing partitioned by various dimensions

3
vendor/github.com/prometheus/client_golang/prometheus/metric.go generated vendored
View file

@ -18,11 +18,12 @@ import (
"time"
"github.com/golang/protobuf/proto"
"github.com/prometheus/common/model"
dto "github.com/prometheus/client_model/go"
)
const separatorByte byte = 255
var separatorByteSlice = []byte{model.SeparatorByte} // For convenient use with xxhash.
// A Metric models a single sample value with its meta data being exported to
// Prometheus. Implementations of Metric in this package are Gauge, Counter,

12
vendor/github.com/prometheus/client_golang/prometheus/observer.go generated vendored
View file

@ -50,3 +50,15 @@ type ObserverVec interface {
Collector
}
// ExemplarObserver is implemented by Observers that offer the option of
// observing a value together with an exemplar. Its ObserveWithExemplar method
// works like the Observe method of an Observer but also replaces the currently
// saved exemplar (if any) with a new one, created from the provided value, the
// current time as timestamp, and the provided Labels. Empty Labels will lead to
// a valid (label-less) exemplar. But if Labels is nil, the current exemplar is
// left in place. ObserveWithExemplar panics if any of the provided labels are
// invalid or if the provided labels contain more than 64 runes in total.
type ExemplarObserver interface {
ObserveWithExemplar(value float64, exemplar Labels)
}

9
vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator.go generated vendored
View file

@ -62,6 +62,8 @@ func (r *responseWriterDelegator) WriteHeader(code int) {
}
func (r *responseWriterDelegator) Write(b []byte) (int, error) {
// If applicable, call WriteHeader here so that observeWriteHeader is
// handled appropriately.
if !r.wroteHeader {
r.WriteHeader(http.StatusOK)
}
@ -82,12 +84,19 @@ func (d closeNotifierDelegator) CloseNotify() <-chan bool {
return d.ResponseWriter.(http.CloseNotifier).CloseNotify()
}
func (d flusherDelegator) Flush() {
// If applicable, call WriteHeader here so that observeWriteHeader is
// handled appropriately.
if !d.wroteHeader {
d.WriteHeader(http.StatusOK)
}
d.ResponseWriter.(http.Flusher).Flush()
}
func (d hijackerDelegator) Hijack() (net.Conn, *bufio.ReadWriter, error) {
return d.ResponseWriter.(http.Hijacker).Hijack()
}
func (d readerFromDelegator) ReadFrom(re io.Reader) (int64, error) {
// If applicable, call WriteHeader here so that observeWriteHeader is
// handled appropriately.
if !d.wroteHeader {
d.WriteHeader(http.StatusOK)
}

63
vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go generated vendored
View file

@ -144,7 +144,12 @@ func HandlerFor(reg prometheus.Gatherer, opts HandlerOpts) http.Handler {
}
}
contentType := expfmt.Negotiate(req.Header)
var contentType expfmt.Format
if opts.EnableOpenMetrics {
contentType = expfmt.NegotiateIncludingOpenMetrics(req.Header)
} else {
contentType = expfmt.Negotiate(req.Header)
}
header := rsp.Header()
header.Set(contentTypeHeader, string(contentType))
@ -163,22 +168,38 @@ func HandlerFor(reg prometheus.Gatherer, opts HandlerOpts) http.Handler {
enc := expfmt.NewEncoder(w, contentType)
var lastErr error
// handleError handles the error according to opts.ErrorHandling
// and returns true if we have to abort after the handling.
handleError := func(err error) bool {
if err == nil {
return false
}
lastErr = err
if opts.ErrorLog != nil {
opts.ErrorLog.Println("error encoding and sending metric family:", err)
}
errCnt.WithLabelValues("encoding").Inc()
switch opts.ErrorHandling {
case PanicOnError:
panic(err)
case HTTPErrorOnError:
httpError(rsp, err)
return true
}
// Do nothing in all other cases, including ContinueOnError.
return false
}
for _, mf := range mfs {
if err := enc.Encode(mf); err != nil {
lastErr = err
if opts.ErrorLog != nil {
opts.ErrorLog.Println("error encoding and sending metric family:", err)
}
errCnt.WithLabelValues("encoding").Inc()
switch opts.ErrorHandling {
case PanicOnError:
panic(err)
case ContinueOnError:
// Handled later.
case HTTPErrorOnError:
httpError(rsp, err)
return
}
if handleError(enc.Encode(mf)) {
return
}
}
if closer, ok := enc.(expfmt.Closer); ok {
// This in particular takes care of the final "# EOF\n" line for OpenMetrics.
if handleError(closer.Close()) {
return
}
}
@ -318,6 +339,16 @@ type HandlerOpts struct {
// away). Until the implementation is improved, it is recommended to
// implement a separate timeout in potentially slow Collectors.
Timeout time.Duration
// If true, the experimental OpenMetrics encoding is added to the
// possible options during content negotiation. Note that Prometheus
// 2.5.0+ will negotiate OpenMetrics as first priority. OpenMetrics is
// the only way to transmit exemplars. However, the move to OpenMetrics
// is not completely transparent. Most notably, the values of "quantile"
// labels of Summaries and "le" labels of Histograms are formatted with
// a trailing ".0" if they would otherwise look like integer numbers
// (which changes the identity of the resulting series on the Prometheus
// server).
EnableOpenMetrics bool
}
// gzipAccepted returns whether the client will accept gzip-encoded content.

32
vendor/github.com/prometheus/client_golang/prometheus/registry.go generated vendored
View file

@ -25,6 +25,7 @@ import (
"sync"
"unicode/utf8"
"github.com/cespare/xxhash/v2"
"github.com/golang/protobuf/proto"
"github.com/prometheus/common/expfmt"
@ -74,7 +75,7 @@ func NewRegistry() *Registry {
// NewPedanticRegistry returns a registry that checks during collection if each
// collected Metric is consistent with its reported Desc, and if the Desc has
// actually been registered with the registry. Unchecked Collectors (those whose
// Describe methed does not yield any descriptors) are excluded from the check.
// Describe method does not yield any descriptors) are excluded from the check.
//
// Usually, a Registry will be happy as long as the union of all collected
// Metrics is consistent and valid even if some metrics are not consistent with
@ -266,7 +267,7 @@ func (r *Registry) Register(c Collector) error {
descChan = make(chan *Desc, capDescChan)
newDescIDs = map[uint64]struct{}{}
newDimHashesByName = map[string]uint64{}
collectorID uint64 // Just a sum of all desc IDs.
collectorID uint64 // All desc IDs XOR'd together.
duplicateDescErr error
)
go func() {
@ -293,12 +294,12 @@ func (r *Registry) Register(c Collector) error {
if _, exists := r.descIDs[desc.id]; exists {
duplicateDescErr = fmt.Errorf("descriptor %s already exists with the same fully-qualified name and const label values", desc)
}
// If it is not a duplicate desc in this collector, add it to
// If it is not a duplicate desc in this collector, XOR it to
// the collectorID. (We allow duplicate descs within the same
// collector, but their existence must be a no-op.)
if _, exists := newDescIDs[desc.id]; !exists {
newDescIDs[desc.id] = struct{}{}
collectorID += desc.id
collectorID ^= desc.id
}
// Are all the label names and the help string consistent with
@ -360,7 +361,7 @@ func (r *Registry) Unregister(c Collector) bool {
var (
descChan = make(chan *Desc, capDescChan)
descIDs = map[uint64]struct{}{}
collectorID uint64 // Just a sum of the desc IDs.
collectorID uint64 // All desc IDs XOR'd together.
)
go func() {
c.Describe(descChan)
@ -368,7 +369,7 @@ func (r *Registry) Unregister(c Collector) bool {
}()
for desc := range descChan {
if _, exists := descIDs[desc.id]; !exists {
collectorID += desc.id
collectorID ^= desc.id
descIDs[desc.id] = struct{}{}
}
}
@ -875,9 +876,9 @@ func checkMetricConsistency(
}
// Is the metric unique (i.e. no other metric with the same name and the same labels)?
h := hashNew()
h = hashAdd(h, name)
h = hashAddByte(h, separatorByte)
h := xxhash.New()
h.WriteString(name)
h.Write(separatorByteSlice)
// Make sure label pairs are sorted. We depend on it for the consistency
// check.
if !sort.IsSorted(labelPairSorter(dtoMetric.Label)) {
@ -888,18 +889,19 @@ func checkMetricConsistency(
dtoMetric.Label = copiedLabels
}
for _, lp := range dtoMetric.Label {
h = hashAdd(h, lp.GetName())
h = hashAddByte(h, separatorByte)
h = hashAdd(h, lp.GetValue())
h = hashAddByte(h, separatorByte)
h.WriteString(lp.GetName())
h.Write(separatorByteSlice)
h.WriteString(lp.GetValue())
h.Write(separatorByteSlice)
}
if _, exists := metricHashes[h]; exists {
hSum := h.Sum64()
if _, exists := metricHashes[hSum]; exists {
return fmt.Errorf(
"collected metric %q { %s} was collected before with the same name and label values",
name, dtoMetric,
)
}
metricHashes[h] = struct{}{}
metricHashes[hSum] = struct{}{}
return nil
}

2
vendor/github.com/prometheus/client_golang/prometheus/summary.go generated vendored
View file

@ -208,7 +208,7 @@ func newSummary(desc *Desc, opts SummaryOpts, labelValues ...string) Summary {
s := &noObjectivesSummary{
desc: desc,
labelPairs: makeLabelPairs(desc, labelValues),
counts: [2]*summaryCounts{&summaryCounts{}, &summaryCounts{}},
counts: [2]*summaryCounts{{}, {}},
}
s.init(s) // Init self-collection.
return s

47
vendor/github.com/prometheus/client_golang/prometheus/value.go generated vendored
View file

@ -16,8 +16,11 @@ package prometheus
import (
"fmt"
"sort"
"time"
"unicode/utf8"
"github.com/golang/protobuf/proto"
"github.com/golang/protobuf/ptypes"
dto "github.com/prometheus/client_model/go"
)
@ -69,7 +72,7 @@ func (v *valueFunc) Desc() *Desc {
}
func (v *valueFunc) Write(out *dto.Metric) error {
return populateMetric(v.valType, v.function(), v.labelPairs, out)
return populateMetric(v.valType, v.function(), v.labelPairs, nil, out)
}
// NewConstMetric returns a metric with one fixed value that cannot be
@ -116,19 +119,20 @@ func (m *constMetric) Desc() *Desc {
}
func (m *constMetric) Write(out *dto.Metric) error {
return populateMetric(m.valType, m.val, m.labelPairs, out)
return populateMetric(m.valType, m.val, m.labelPairs, nil, out)
}
func populateMetric(
t ValueType,
v float64,
labelPairs []*dto.LabelPair,
e *dto.Exemplar,
m *dto.Metric,
) error {
m.Label = labelPairs
switch t {
case CounterValue:
m.Counter = &dto.Counter{Value: proto.Float64(v)}
m.Counter = &dto.Counter{Value: proto.Float64(v), Exemplar: e}
case GaugeValue:
m.Gauge = &dto.Gauge{Value: proto.Float64(v)}
case UntypedValue:
@ -160,3 +164,40 @@ func makeLabelPairs(desc *Desc, labelValues []string) []*dto.LabelPair {
sort.Sort(labelPairSorter(labelPairs))
return labelPairs
}
// ExemplarMaxRunes is the max total number of runes allowed in exemplar labels.
const ExemplarMaxRunes = 64
// newExemplar creates a new dto.Exemplar from the provided values. An error is
// returned if any of the label names or values are invalid or if the total
// number of runes in the label names and values exceeds ExemplarMaxRunes.
func newExemplar(value float64, ts time.Time, l Labels) (*dto.Exemplar, error) {
e := &dto.Exemplar{}
e.Value = proto.Float64(value)
tsProto, err := ptypes.TimestampProto(ts)
if err != nil {
return nil, err
}
e.Timestamp = tsProto
labelPairs := make([]*dto.LabelPair, 0, len(l))
var runes int
for name, value := range l {
if !checkLabelName(name) {
return nil, fmt.Errorf("exemplar label name %q is invalid", name)
}
runes += utf8.RuneCountInString(name)
if !utf8.ValidString(value) {
return nil, fmt.Errorf("exemplar label value %q is not valid UTF-8", value)
}
runes += utf8.RuneCountInString(value)
labelPairs = append(labelPairs, &dto.LabelPair{
Name: proto.String(name),
Value: proto.String(value),
})
}
if runes > ExemplarMaxRunes {
return nil, fmt.Errorf("exemplar labels have %d runes, exceeding the limit of %d", runes, ExemplarMaxRunes)
}
e.Label = labelPairs
return e, nil
}

2
vendor/github.com/prometheus/client_golang/prometheus/vec.go generated vendored
View file

@ -24,7 +24,7 @@ import (
// their label values. metricVec is not used directly (and therefore
// unexported). It is used as a building block for implementations of vectors of
// a given metric type, like GaugeVec, CounterVec, SummaryVec, and HistogramVec.
// It also handles label currying. It uses basicMetricVec internally.
// It also handles label currying.
type metricVec struct {
*metricMap

266
vendor/github.com/prometheus/client_model/go/metrics.pb.go generated vendored
View file

@ -1,11 +1,14 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// source: metrics.proto
package io_prometheus_client // import "github.com/prometheus/client_model/go"
package io_prometheus_client
import proto "github.com/golang/protobuf/proto"
import fmt "fmt"
import math "math"
import (
fmt "fmt"
proto "github.com/golang/protobuf/proto"
timestamp "github.com/golang/protobuf/ptypes/timestamp"
math "math"
)
// Reference imports to suppress errors if they are not otherwise used.
var _ = proto.Marshal
@ -16,7 +19,7 @@ var _ = math.Inf
// is compatible with the proto package it is being compiled against.
// A compilation error at this line likely means your copy of the
// proto package needs to be updated.
const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
type MetricType int32
@ -35,6 +38,7 @@ var MetricType_name = map[int32]string{
3: "UNTYPED",
4: "HISTOGRAM",
}
var MetricType_value = map[string]int32{
"COUNTER": 0,
"GAUGE": 1,
@ -48,9 +52,11 @@ func (x MetricType) Enum() *MetricType {
*p = x
return p
}
func (x MetricType) String() string {
return proto.EnumName(MetricType_name, int32(x))
}
func (x *MetricType) UnmarshalJSON(data []byte) error {
value, err := proto.UnmarshalJSONEnum(MetricType_value, data, "MetricType")
if err != nil {
@ -59,8 +65,9 @@ func (x *MetricType) UnmarshalJSON(data []byte) error {
*x = MetricType(value)
return nil
}
func (MetricType) EnumDescriptor() ([]byte, []int) {
return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{0}
return fileDescriptor_6039342a2ba47b72, []int{0}
}
type LabelPair struct {
@ -75,16 +82,17 @@ func (m *LabelPair) Reset() { *m = LabelPair{} }
func (m *LabelPair) String() string { return proto.CompactTextString(m) }
func (*LabelPair) ProtoMessage() {}
func (*LabelPair) Descriptor() ([]byte, []int) {
return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{0}
return fileDescriptor_6039342a2ba47b72, []int{0}
}
func (m *LabelPair) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_LabelPair.Unmarshal(m, b)
}
func (m *LabelPair) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_LabelPair.Marshal(b, m, deterministic)
}
func (dst *LabelPair) XXX_Merge(src proto.Message) {
xxx_messageInfo_LabelPair.Merge(dst, src)
func (m *LabelPair) XXX_Merge(src proto.Message) {
xxx_messageInfo_LabelPair.Merge(m, src)
}
func (m *LabelPair) XXX_Size() int {
return xxx_messageInfo_LabelPair.Size(m)
@ -120,16 +128,17 @@ func (m *Gauge) Reset() { *m = Gauge{} }
func (m *Gauge) String() string { return proto.CompactTextString(m) }
func (*Gauge) ProtoMessage() {}
func (*Gauge) Descriptor() ([]byte, []int) {
return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{1}
return fileDescriptor_6039342a2ba47b72, []int{1}
}
func (m *Gauge) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Gauge.Unmarshal(m, b)
}
func (m *Gauge) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Gauge.Marshal(b, m, deterministic)
}
func (dst *Gauge) XXX_Merge(src proto.Message) {
xxx_messageInfo_Gauge.Merge(dst, src)
func (m *Gauge) XXX_Merge(src proto.Message) {
xxx_messageInfo_Gauge.Merge(m, src)
}
func (m *Gauge) XXX_Size() int {
return xxx_messageInfo_Gauge.Size(m)
@ -148,26 +157,28 @@ func (m *Gauge) GetValue() float64 {
}
type Counter struct {
Value *float64 `protobuf:"fixed64,1,opt,name=value" json:"value,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
Value *float64 `protobuf:"fixed64,1,opt,name=value" json:"value,omitempty"`
Exemplar *Exemplar `protobuf:"bytes,2,opt,name=exemplar" json:"exemplar,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *Counter) Reset() { *m = Counter{} }
func (m *Counter) String() string { return proto.CompactTextString(m) }
func (*Counter) ProtoMessage() {}
func (*Counter) Descriptor() ([]byte, []int) {
return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{2}
return fileDescriptor_6039342a2ba47b72, []int{2}
}
func (m *Counter) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Counter.Unmarshal(m, b)
}
func (m *Counter) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Counter.Marshal(b, m, deterministic)
}
func (dst *Counter) XXX_Merge(src proto.Message) {
xxx_messageInfo_Counter.Merge(dst, src)
func (m *Counter) XXX_Merge(src proto.Message) {
xxx_messageInfo_Counter.Merge(m, src)
}
func (m *Counter) XXX_Size() int {
return xxx_messageInfo_Counter.Size(m)
@ -185,6 +196,13 @@ func (m *Counter) GetValue() float64 {
return 0
}
func (m *Counter) GetExemplar() *Exemplar {
if m != nil {
return m.Exemplar
}
return nil
}
type Quantile struct {
Quantile *float64 `protobuf:"fixed64,1,opt,name=quantile" json:"quantile,omitempty"`
Value *float64 `protobuf:"fixed64,2,opt,name=value" json:"value,omitempty"`
@ -197,16 +215,17 @@ func (m *Quantile) Reset() { *m = Quantile{} }
func (m *Quantile) String() string { return proto.CompactTextString(m) }
func (*Quantile) ProtoMessage() {}
func (*Quantile) Descriptor() ([]byte, []int) {
return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{3}
return fileDescriptor_6039342a2ba47b72, []int{3}
}
func (m *Quantile) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Quantile.Unmarshal(m, b)
}
func (m *Quantile) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Quantile.Marshal(b, m, deterministic)
}
func (dst *Quantile) XXX_Merge(src proto.Message) {
xxx_messageInfo_Quantile.Merge(dst, src)
func (m *Quantile) XXX_Merge(src proto.Message) {
xxx_messageInfo_Quantile.Merge(m, src)
}
func (m *Quantile) XXX_Size() int {
return xxx_messageInfo_Quantile.Size(m)
@ -244,16 +263,17 @@ func (m *Summary) Reset() { *m = Summary{} }
func (m *Summary) String() string { return proto.CompactTextString(m) }
func (*Summary) ProtoMessage() {}
func (*Summary) Descriptor() ([]byte, []int) {
return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{4}
return fileDescriptor_6039342a2ba47b72, []int{4}
}
func (m *Summary) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Summary.Unmarshal(m, b)
}
func (m *Summary) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Summary.Marshal(b, m, deterministic)
}
func (dst *Summary) XXX_Merge(src proto.Message) {
xxx_messageInfo_Summary.Merge(dst, src)
func (m *Summary) XXX_Merge(src proto.Message) {
xxx_messageInfo_Summary.Merge(m, src)
}
func (m *Summary) XXX_Size() int {
return xxx_messageInfo_Summary.Size(m)
@ -296,16 +316,17 @@ func (m *Untyped) Reset() { *m = Untyped{} }
func (m *Untyped) String() string { return proto.CompactTextString(m) }
func (*Untyped) ProtoMessage() {}
func (*Untyped) Descriptor() ([]byte, []int) {
return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{5}
return fileDescriptor_6039342a2ba47b72, []int{5}
}
func (m *Untyped) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Untyped.Unmarshal(m, b)
}
func (m *Untyped) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Untyped.Marshal(b, m, deterministic)
}
func (dst *Untyped) XXX_Merge(src proto.Message) {
xxx_messageInfo_Untyped.Merge(dst, src)
func (m *Untyped) XXX_Merge(src proto.Message) {
xxx_messageInfo_Untyped.Merge(m, src)
}
func (m *Untyped) XXX_Size() int {
return xxx_messageInfo_Untyped.Size(m)
@ -336,16 +357,17 @@ func (m *Histogram) Reset() { *m = Histogram{} }
func (m *Histogram) String() string { return proto.CompactTextString(m) }
func (*Histogram) ProtoMessage() {}
func (*Histogram) Descriptor() ([]byte, []int) {
return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{6}
return fileDescriptor_6039342a2ba47b72, []int{6}
}
func (m *Histogram) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Histogram.Unmarshal(m, b)
}
func (m *Histogram) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Histogram.Marshal(b, m, deterministic)
}
func (dst *Histogram) XXX_Merge(src proto.Message) {
xxx_messageInfo_Histogram.Merge(dst, src)
func (m *Histogram) XXX_Merge(src proto.Message) {
xxx_messageInfo_Histogram.Merge(m, src)
}
func (m *Histogram) XXX_Size() int {
return xxx_messageInfo_Histogram.Size(m)
@ -378,27 +400,29 @@ func (m *Histogram) GetBucket() []*Bucket {
}
type Bucket struct {
CumulativeCount *uint64 `protobuf:"varint,1,opt,name=cumulative_count,json=cumulativeCount" json:"cumulative_count,omitempty"`
UpperBound *float64 `protobuf:"fixed64,2,opt,name=upper_bound,json=upperBound" json:"upper_bound,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
CumulativeCount *uint64 `protobuf:"varint,1,opt,name=cumulative_count,json=cumulativeCount" json:"cumulative_count,omitempty"`
UpperBound *float64 `protobuf:"fixed64,2,opt,name=upper_bound,json=upperBound" json:"upper_bound,omitempty"`
Exemplar *Exemplar `protobuf:"bytes,3,opt,name=exemplar" json:"exemplar,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *Bucket) Reset() { *m = Bucket{} }
func (m *Bucket) String() string { return proto.CompactTextString(m) }
func (*Bucket) ProtoMessage() {}
func (*Bucket) Descriptor() ([]byte, []int) {
return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{7}
return fileDescriptor_6039342a2ba47b72, []int{7}
}
func (m *Bucket) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Bucket.Unmarshal(m, b)
}
func (m *Bucket) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Bucket.Marshal(b, m, deterministic)
}
func (dst *Bucket) XXX_Merge(src proto.Message) {
xxx_messageInfo_Bucket.Merge(dst, src)
func (m *Bucket) XXX_Merge(src proto.Message) {
xxx_messageInfo_Bucket.Merge(m, src)
}
func (m *Bucket) XXX_Size() int {
return xxx_messageInfo_Bucket.Size(m)
@ -423,6 +447,68 @@ func (m *Bucket) GetUpperBound() float64 {
return 0
}
func (m *Bucket) GetExemplar() *Exemplar {
if m != nil {
return m.Exemplar
}
return nil
}
type Exemplar struct {
Label []*LabelPair `protobuf:"bytes,1,rep,name=label" json:"label,omitempty"`
Value *float64 `protobuf:"fixed64,2,opt,name=value" json:"value,omitempty"`
Timestamp *timestamp.Timestamp `protobuf:"bytes,3,opt,name=timestamp" json:"timestamp,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *Exemplar) Reset() { *m = Exemplar{} }
func (m *Exemplar) String() string { return proto.CompactTextString(m) }
func (*Exemplar) ProtoMessage() {}
func (*Exemplar) Descriptor() ([]byte, []int) {
return fileDescriptor_6039342a2ba47b72, []int{8}
}
func (m *Exemplar) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Exemplar.Unmarshal(m, b)
}
func (m *Exemplar) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Exemplar.Marshal(b, m, deterministic)
}
func (m *Exemplar) XXX_Merge(src proto.Message) {
xxx_messageInfo_Exemplar.Merge(m, src)
}
func (m *Exemplar) XXX_Size() int {
return xxx_messageInfo_Exemplar.Size(m)
}
func (m *Exemplar) XXX_DiscardUnknown() {
xxx_messageInfo_Exemplar.DiscardUnknown(m)
}
var xxx_messageInfo_Exemplar proto.InternalMessageInfo
func (m *Exemplar) GetLabel() []*LabelPair {
if m != nil {
return m.Label
}
return nil
}
func (m *Exemplar) GetValue() float64 {
if m != nil && m.Value != nil {
return *m.Value
}
return 0
}
func (m *Exemplar) GetTimestamp() *timestamp.Timestamp {
if m != nil {
return m.Timestamp
}
return nil
}
type Metric struct {
Label []*LabelPair `protobuf:"bytes,1,rep,name=label" json:"label,omitempty"`
Gauge *Gauge `protobuf:"bytes,2,opt,name=gauge" json:"gauge,omitempty"`
@ -440,16 +526,17 @@ func (m *Metric) Reset() { *m = Metric{} }
func (m *Metric) String() string { return proto.CompactTextString(m) }
func (*Metric) ProtoMessage() {}
func (*Metric) Descriptor() ([]byte, []int) {
return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{8}
return fileDescriptor_6039342a2ba47b72, []int{9}
}
func (m *Metric) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Metric.Unmarshal(m, b)
}
func (m *Metric) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Metric.Marshal(b, m, deterministic)
}
func (dst *Metric) XXX_Merge(src proto.Message) {
xxx_messageInfo_Metric.Merge(dst, src)
func (m *Metric) XXX_Merge(src proto.Message) {
xxx_messageInfo_Metric.Merge(m, src)
}
func (m *Metric) XXX_Size() int {
return xxx_messageInfo_Metric.Size(m)
@ -523,16 +610,17 @@ func (m *MetricFamily) Reset() { *m = MetricFamily{} }
func (m *MetricFamily) String() string { return proto.CompactTextString(m) }
func (*MetricFamily) ProtoMessage() {}
func (*MetricFamily) Descriptor() ([]byte, []int) {
return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{9}
return fileDescriptor_6039342a2ba47b72, []int{10}
}
func (m *MetricFamily) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_MetricFamily.Unmarshal(m, b)
}
func (m *MetricFamily) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_MetricFamily.Marshal(b, m, deterministic)
}
func (dst *MetricFamily) XXX_Merge(src proto.Message) {
xxx_messageInfo_MetricFamily.Merge(dst, src)
func (m *MetricFamily) XXX_Merge(src proto.Message) {
xxx_messageInfo_MetricFamily.Merge(m, src)
}
func (m *MetricFamily) XXX_Size() int {
return xxx_messageInfo_MetricFamily.Size(m)
@ -572,6 +660,7 @@ func (m *MetricFamily) GetMetric() []*Metric {
}
func init() {
proto.RegisterEnum("io.prometheus.client.MetricType", MetricType_name, MetricType_value)
proto.RegisterType((*LabelPair)(nil), "io.prometheus.client.LabelPair")
proto.RegisterType((*Gauge)(nil), "io.prometheus.client.Gauge")
proto.RegisterType((*Counter)(nil), "io.prometheus.client.Counter")
@ -580,50 +669,55 @@ func init() {
proto.RegisterType((*Untyped)(nil), "io.prometheus.client.Untyped")
proto.RegisterType((*Histogram)(nil), "io.prometheus.client.Histogram")
proto.RegisterType((*Bucket)(nil), "io.prometheus.client.Bucket")
proto.RegisterType((*Exemplar)(nil), "io.prometheus.client.Exemplar")
proto.RegisterType((*Metric)(nil), "io.prometheus.client.Metric")
proto.RegisterType((*MetricFamily)(nil), "io.prometheus.client.MetricFamily")
proto.RegisterEnum("io.prometheus.client.MetricType", MetricType_name, MetricType_value)
}
func init() { proto.RegisterFile("metrics.proto", fileDescriptor_metrics_c97c9a2b9560cb8f) }
func init() { proto.RegisterFile("metrics.proto", fileDescriptor_6039342a2ba47b72) }
var fileDescriptor_metrics_c97c9a2b9560cb8f = []byte{
// 591 bytes of a gzipped FileDescriptorProto
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0x13, 0x46, 0x2b, 0x4e, 0x58, 0x11, 0xb1, 0x2a, 0xe8, 0xf6, 0xad, 0xdd, 0x0e, 0xf6, 0x56, 0x58,
0x58, 0x0d, 0x7e, 0x5b, 0xb0, 0xa1, 0x6f, 0xe0, 0x13, 0x61, 0x49, 0xba, 0x6c, 0xfd, 0x83, 0x11,
0xd8, 0x0b, 0x9a, 0x16, 0xe6, 0x07, 0x56, 0x35, 0x3a, 0x00, 0x5b, 0x7a, 0x54, 0x47, 0xf8, 0xff,
0x7e, 0xbf, 0xdd, 0x95, 0x9e, 0x3c, 0x59, 0x16, 0x14, 0x2b, 0xb6, 0x0c, 0x9f, 0x7e, 0x53, 0x02,
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0xf1, 0xf1, 0x34, 0x0c, 0x8f, 0xf1, 0xb5, 0xbf, 0x26, 0x17, 0xd3, 0x8b, 0xc9, 0xf5, 0xd5, 0xd9,
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0x18, 0x5a, 0x5f, 0xb2, 0x6f, 0x47, 0xf3, 0x84, 0x2f, 0xc4, 0x6c, 0x18, 0xe7, 0x6c, 0xaf, 0xe9,
0xee, 0xe9, 0x6e, 0xc4, 0xf2, 0x1b, 0x9a, 0xee, 0xcd, 0xf3, 0x77, 0x49, 0x1e, 0x35, 0xdd, 0x48,
0x77, 0xff, 0x06, 0x00, 0x00, 0xff, 0xff, 0x45, 0x21, 0x7f, 0x64, 0x2b, 0x05, 0x00, 0x00,
var fileDescriptor_6039342a2ba47b72 = []byte{
// 665 bytes of a gzipped FileDescriptorProto
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xac, 0x54, 0xcd, 0x6e, 0xd3, 0x4c,
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0x18, 0x8b, 0x15, 0x25, 0x6c, 0x41, 0x78, 0xe6, 0xfa, 0x51, 0x48, 0x96, 0x6c, 0xab, 0x1b, 0xc4,
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0x16, 0xd5, 0xc6, 0xd9, 0x86, 0xfa, 0xd0, 0xe3, 0xc1, 0x6f, 0x6d, 0xc1, 0x31, 0xf2, 0xf6, 0x7b,
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0xff, 0xd0, 0x84, 0x91, 0x73, 0x59, 0x06, 0x00, 0x00,
}

128
vendor/github.com/prometheus/common/expfmt/encode.go generated vendored
View file

@ -30,17 +30,38 @@ type Encoder interface {
Encode(*dto.MetricFamily) error
}
type encoder func(*dto.MetricFamily) error
func (e encoder) Encode(v *dto.MetricFamily) error {
return e(v)
// Closer is implemented by Encoders that need to be closed to finalize
// encoding. (For example, OpenMetrics needs a final `# EOF` line.)
//
// Note that all Encoder implementations returned from this package implement
// Closer, too, even if the Close call is a no-op. This happens in preparation
// for adding a Close method to the Encoder interface directly in a (mildly
// breaking) release in the future.
type Closer interface {
Close() error
}
// Negotiate returns the Content-Type based on the given Accept header.
// If no appropriate accepted type is found, FmtText is returned.
type encoderCloser struct {
encode func(*dto.MetricFamily) error
close func() error
}
func (ec encoderCloser) Encode(v *dto.MetricFamily) error {
return ec.encode(v)
}
func (ec encoderCloser) Close() error {
return ec.close()
}
// Negotiate returns the Content-Type based on the given Accept header. If no
// appropriate accepted type is found, FmtText is returned (which is the
// Prometheus text format). This function will never negotiate FmtOpenMetrics,
// as the support is still experimental. To include the option to negotiate
// FmtOpenMetrics, use NegotiateOpenMetrics.
func Negotiate(h http.Header) Format {
for _, ac := range goautoneg.ParseAccept(h.Get(hdrAccept)) {
// Check for protocol buffer
ver := ac.Params["version"]
if ac.Type+"/"+ac.SubType == ProtoType && ac.Params["proto"] == ProtoProtocol {
switch ac.Params["encoding"] {
case "delimited":
@ -51,8 +72,6 @@ func Negotiate(h http.Header) Format {
return FmtProtoCompact
}
}
// Check for text format.
ver := ac.Params["version"]
if ac.Type == "text" && ac.SubType == "plain" && (ver == TextVersion || ver == "") {
return FmtText
}
@ -60,29 +79,84 @@ func Negotiate(h http.Header) Format {
return FmtText
}
// NewEncoder returns a new encoder based on content type negotiation.
// NegotiateIncludingOpenMetrics works like Negotiate but includes
// FmtOpenMetrics as an option for the result. Note that this function is
// temporary and will disappear once FmtOpenMetrics is fully supported and as
// such may be negotiated by the normal Negotiate function.
func NegotiateIncludingOpenMetrics(h http.Header) Format {
for _, ac := range goautoneg.ParseAccept(h.Get(hdrAccept)) {
ver := ac.Params["version"]
if ac.Type+"/"+ac.SubType == ProtoType && ac.Params["proto"] == ProtoProtocol {
switch ac.Params["encoding"] {
case "delimited":
return FmtProtoDelim
case "text":
return FmtProtoText
case "compact-text":
return FmtProtoCompact
}
}
if ac.Type == "text" && ac.SubType == "plain" && (ver == TextVersion || ver == "") {
return FmtText
}
if ac.Type+"/"+ac.SubType == OpenMetricsType && (ver == OpenMetricsVersion || ver == "") {
return FmtOpenMetrics
}
}
return FmtText
}
// NewEncoder returns a new encoder based on content type negotiation. All
// Encoder implementations returned by NewEncoder also implement Closer, and
// callers should always call the Close method. It is currently only required
// for FmtOpenMetrics, but a future (breaking) release will add the Close method
// to the Encoder interface directly. The current version of the Encoder
// interface is kept for backwards compatibility.
func NewEncoder(w io.Writer, format Format) Encoder {
switch format {
case FmtProtoDelim:
return encoder(func(v *dto.MetricFamily) error {
_, err := pbutil.WriteDelimited(w, v)
return err
})
return encoderCloser{
encode: func(v *dto.MetricFamily) error {
_, err := pbutil.WriteDelimited(w, v)
return err
},
close: func() error { return nil },
}
case FmtProtoCompact:
return encoder(func(v *dto.MetricFamily) error {
_, err := fmt.Fprintln(w, v.String())
return err
})
return encoderCloser{
encode: func(v *dto.MetricFamily) error {
_, err := fmt.Fprintln(w, v.String())
return err
},
close: func() error { return nil },
}
case FmtProtoText:
return encoder(func(v *dto.MetricFamily) error {
_, err := fmt.Fprintln(w, proto.MarshalTextString(v))
return err
})
return encoderCloser{
encode: func(v *dto.MetricFamily) error {
_, err := fmt.Fprintln(w, proto.MarshalTextString(v))
return err
},
close: func() error { return nil },
}
case FmtText:
return encoder(func(v *dto.MetricFamily) error {
_, err := MetricFamilyToText(w, v)
return err
})
return encoderCloser{
encode: func(v *dto.MetricFamily) error {
_, err := MetricFamilyToText(w, v)
return err
},
close: func() error { return nil },
}
case FmtOpenMetrics:
return encoderCloser{
encode: func(v *dto.MetricFamily) error {
_, err := MetricFamilyToOpenMetrics(w, v)
return err
},
close: func() error {
_, err := FinalizeOpenMetrics(w)
return err
},
}
}
panic("expfmt.NewEncoder: unknown format")
panic(fmt.Errorf("expfmt.NewEncoder: unknown format %q", format))
}

11
vendor/github.com/prometheus/common/expfmt/expfmt.go generated vendored
View file

@ -19,10 +19,12 @@ type Format string
// Constants to assemble the Content-Type values for the different wire protocols.
const (
TextVersion = "0.0.4"
ProtoType = `application/vnd.google.protobuf`
ProtoProtocol = `io.prometheus.client.MetricFamily`
ProtoFmt = ProtoType + "; proto=" + ProtoProtocol + ";"
TextVersion = "0.0.4"
ProtoType = `application/vnd.google.protobuf`
ProtoProtocol = `io.prometheus.client.MetricFamily`
ProtoFmt = ProtoType + "; proto=" + ProtoProtocol + ";"
OpenMetricsType = `application/openmetrics-text`
OpenMetricsVersion = "0.0.1"
// The Content-Type values for the different wire protocols.
FmtUnknown Format = `<unknown>`
@ -30,6 +32,7 @@ const (
FmtProtoDelim Format = ProtoFmt + ` encoding=delimited`
FmtProtoText Format = ProtoFmt + ` encoding=text`
FmtProtoCompact Format = ProtoFmt + ` encoding=compact-text`
FmtOpenMetrics Format = OpenMetricsType + `; version=` + OpenMetricsVersion + `; charset=utf-8`
)
const (

527
vendor/github.com/prometheus/common/expfmt/openmetrics_create.go generated vendored Normal file
View file

@ -0,0 +1,527 @@
// Copyright 2020 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 expfmt
import (
"bufio"
"bytes"
"fmt"
"io"
"math"
"strconv"
"strings"
"github.com/golang/protobuf/ptypes"
"github.com/prometheus/common/model"
dto "github.com/prometheus/client_model/go"
)
// MetricFamilyToOpenMetrics converts a MetricFamily proto message into the
// OpenMetrics text format and writes the resulting lines to 'out'. It returns
// the number of bytes written and any error encountered. The output will have
// the same order as the input, no further sorting is performed. Furthermore,
// this function assumes the input is already sanitized and does not perform any
// sanity checks. If the input contains duplicate metrics or invalid metric or
// label names, the conversion will result in invalid text format output.
//
// This function fulfills the type 'expfmt.encoder'.
//
// Note that OpenMetrics requires a final `# EOF` line. Since this function acts
// on individual metric families, it is the responsibility of the caller to
// append this line to 'out' once all metric families have been written.
// Conveniently, this can be done by calling FinalizeOpenMetrics.
//
// The output should be fully OpenMetrics compliant. However, there are a few
// missing features and peculiarities to avoid complications when switching from
// Prometheus to OpenMetrics or vice versa:
//
// - Counters are expected to have the `_total` suffix in their metric name. In
// the output, the suffix will be truncated from the `# TYPE` and `# HELP`
// line. A counter with a missing `_total` suffix is not an error. However,
// its type will be set to `unknown` in that case to avoid invalid OpenMetrics
// output.
//
// - No support for the following (optional) features: `# UNIT` line, `_created`
// line, info type, stateset type, gaugehistogram type.
//
// - The size of exemplar labels is not checked (i.e. it's possible to create
// exemplars that are larger than allowed by the OpenMetrics specification).
//
// - The value of Counters is not checked. (OpenMetrics doesn't allow counters
// with a `NaN` value.)
func MetricFamilyToOpenMetrics(out io.Writer, in *dto.MetricFamily) (written int, err error) {
name := in.GetName()
if name == "" {
return 0, fmt.Errorf("MetricFamily has no name: %s", in)
}
// Try the interface upgrade. If it doesn't work, we'll use a
// bufio.Writer from the sync.Pool.
w, ok := out.(enhancedWriter)
if !ok {
b := bufPool.Get().(*bufio.Writer)
b.Reset(out)
w = b
defer func() {
bErr := b.Flush()
if err == nil {
err = bErr
}
bufPool.Put(b)
}()
}
var (
n int
metricType = in.GetType()
shortName = name
)
if metricType == dto.MetricType_COUNTER && strings.HasSuffix(shortName, "_total") {
shortName = name[:len(name)-6]
}
// Comments, first HELP, then TYPE.
if in.Help != nil {
n, err = w.WriteString("# HELP ")
written += n
if err != nil {
return
}
n, err = w.WriteString(shortName)
written += n
if err != nil {
return
}
err = w.WriteByte(' ')
written++
if err != nil {
return
}
n, err = writeEscapedString(w, *in.Help, true)
written += n
if err != nil {
return
}
err = w.WriteByte('\n')
written++
if err != nil {
return
}
}
n, err = w.WriteString("# TYPE ")
written += n
if err != nil {
return
}
n, err = w.WriteString(shortName)
written += n
if err != nil {
return
}
switch metricType {
case dto.MetricType_COUNTER:
if strings.HasSuffix(name, "_total") {
n, err = w.WriteString(" counter\n")
} else {
n, err = w.WriteString(" unknown\n")
}
case dto.MetricType_GAUGE:
n, err = w.WriteString(" gauge\n")
case dto.MetricType_SUMMARY:
n, err = w.WriteString(" summary\n")
case dto.MetricType_UNTYPED:
n, err = w.WriteString(" unknown\n")
case dto.MetricType_HISTOGRAM:
n, err = w.WriteString(" histogram\n")
default:
return written, fmt.Errorf("unknown metric type %s", metricType.String())
}
written += n
if err != nil {
return
}
// Finally the samples, one line for each.
for _, metric := range in.Metric {
switch metricType {
case dto.MetricType_COUNTER:
if metric.Counter == nil {
return written, fmt.Errorf(
"expected counter in metric %s %s", name, metric,
)
}
// Note that we have ensured above that either the name
// ends on `_total` or that the rendered type is
// `unknown`. Therefore, no `_total` must be added here.
n, err = writeOpenMetricsSample(
w, name, "", metric, "", 0,
metric.Counter.GetValue(), 0, false,
metric.Counter.Exemplar,
)
case dto.MetricType_GAUGE:
if metric.Gauge == nil {
return written, fmt.Errorf(
"expected gauge in metric %s %s", name, metric,
)
}
n, err = writeOpenMetricsSample(
w, name, "", metric, "", 0,
metric.Gauge.GetValue(), 0, false,
nil,
)
case dto.MetricType_UNTYPED:
if metric.Untyped == nil {
return written, fmt.Errorf(
"expected untyped in metric %s %s", name, metric,
)
}
n, err = writeOpenMetricsSample(
w, name, "", metric, "", 0,
metric.Untyped.GetValue(), 0, false,
nil,
)
case dto.MetricType_SUMMARY:
if metric.Summary == nil {
return written, fmt.Errorf(
"expected summary in metric %s %s", name, metric,
)
}
for _, q := range metric.Summary.Quantile {
n, err = writeOpenMetricsSample(
w, name, "", metric,
model.QuantileLabel, q.GetQuantile(),
q.GetValue(), 0, false,
nil,
)
written += n
if err != nil {
return
}
}
n, err = writeOpenMetricsSample(
w, name, "_sum", metric, "", 0,
metric.Summary.GetSampleSum(), 0, false,
nil,
)
written += n
if err != nil {
return
}
n, err = writeOpenMetricsSample(
w, name, "_count", metric, "", 0,
0, metric.Summary.GetSampleCount(), true,
nil,
)
case dto.MetricType_HISTOGRAM:
if metric.Histogram == nil {
return written, fmt.Errorf(
"expected histogram in metric %s %s", name, metric,
)
}
infSeen := false
for _, b := range metric.Histogram.Bucket {
n, err = writeOpenMetricsSample(
w, name, "_bucket", metric,
model.BucketLabel, b.GetUpperBound(),
0, b.GetCumulativeCount(), true,
b.Exemplar,
)
written += n
if err != nil {
return
}
if math.IsInf(b.GetUpperBound(), +1) {
infSeen = true
}
}
if !infSeen {
n, err = writeOpenMetricsSample(
w, name, "_bucket", metric,
model.BucketLabel, math.Inf(+1),
0, metric.Histogram.GetSampleCount(), true,
nil,
)
written += n
if err != nil {
return
}
}
n, err = writeOpenMetricsSample(
w, name, "_sum", metric, "", 0,
metric.Histogram.GetSampleSum(), 0, false,
nil,
)
written += n
if err != nil {
return
}
n, err = writeOpenMetricsSample(
w, name, "_count", metric, "", 0,
0, metric.Histogram.GetSampleCount(), true,
nil,
)
default:
return written, fmt.Errorf(
"unexpected type in metric %s %s", name, metric,
)
}
written += n
if err != nil {
return
}
}
return
}
// FinalizeOpenMetrics writes the final `# EOF\n` line required by OpenMetrics.
func FinalizeOpenMetrics(w io.Writer) (written int, err error) {
return w.Write([]byte("# EOF\n"))
}
// writeOpenMetricsSample writes a single sample in OpenMetrics text format to
// w, given the metric name, the metric proto message itself, optionally an
// additional label name with a float64 value (use empty string as label name if
// not required), the value (optionally as float64 or uint64, determined by
// useIntValue), and optionally an exemplar (use nil if not required). The
// function returns the number of bytes written and any error encountered.
func writeOpenMetricsSample(
w enhancedWriter,
name, suffix string,
metric *dto.Metric,
additionalLabelName string, additionalLabelValue float64,
floatValue float64, intValue uint64, useIntValue bool,
exemplar *dto.Exemplar,
) (int, error) {
var written int
n, err := w.WriteString(name)
written += n
if err != nil {
return written, err
}
if suffix != "" {
n, err = w.WriteString(suffix)
written += n
if err != nil {
return written, err
}
}
n, err = writeOpenMetricsLabelPairs(
w, metric.Label, additionalLabelName, additionalLabelValue,
)
written += n
if err != nil {
return written, err
}
err = w.WriteByte(' ')
written++
if err != nil {
return written, err
}
if useIntValue {
n, err = writeUint(w, intValue)
} else {
n, err = writeOpenMetricsFloat(w, floatValue)
}
written += n
if err != nil {
return written, err
}
if metric.TimestampMs != nil {
err = w.WriteByte(' ')
written++
if err != nil {
return written, err
}
// TODO(beorn7): Format this directly without converting to a float first.
n, err = writeOpenMetricsFloat(w, float64(*metric.TimestampMs)/1000)
written += n
if err != nil {
return written, err
}
}
if exemplar != nil {
n, err = writeExemplar(w, exemplar)
written += n
if err != nil {
return written, err
}
}
err = w.WriteByte('\n')
written++
if err != nil {
return written, err
}
return written, nil
}
// writeOpenMetricsLabelPairs works like writeOpenMetrics but formats the float
// in OpenMetrics style.
func writeOpenMetricsLabelPairs(
w enhancedWriter,
in []*dto.LabelPair,
additionalLabelName string, additionalLabelValue float64,
) (int, error) {
if len(in) == 0 && additionalLabelName == "" {
return 0, nil
}
var (
written int
separator byte = '{'
)
for _, lp := range in {
err := w.WriteByte(separator)
written++
if err != nil {
return written, err
}
n, err := w.WriteString(lp.GetName())
written += n
if err != nil {
return written, err
}
n, err = w.WriteString(`="`)
written += n
if err != nil {
return written, err
}
n, err = writeEscapedString(w, lp.GetValue(), true)
written += n
if err != nil {
return written, err
}
err = w.WriteByte('"')
written++
if err != nil {
return written, err
}
separator = ','
}
if additionalLabelName != "" {
err := w.WriteByte(separator)
written++
if err != nil {
return written, err
}
n, err := w.WriteString(additionalLabelName)
written += n
if err != nil {
return written, err
}
n, err = w.WriteString(`="`)
written += n
if err != nil {
return written, err
}
n, err = writeOpenMetricsFloat(w, additionalLabelValue)
written += n
if err != nil {
return written, err
}
err = w.WriteByte('"')
written++
if err != nil {
return written, err
}
}
err := w.WriteByte('}')
written++
if err != nil {
return written, err
}
return written, nil
}
// writeExemplar writes the provided exemplar in OpenMetrics format to w. The
// function returns the number of bytes written and any error encountered.
func writeExemplar(w enhancedWriter, e *dto.Exemplar) (int, error) {
written := 0
n, err := w.WriteString(" # ")
written += n
if err != nil {
return written, err
}
n, err = writeOpenMetricsLabelPairs(w, e.Label, "", 0)
written += n
if err != nil {
return written, err
}
err = w.WriteByte(' ')
written++
if err != nil {
return written, err
}
n, err = writeOpenMetricsFloat(w, e.GetValue())
written += n
if err != nil {
return written, err
}
if e.Timestamp != nil {
err = w.WriteByte(' ')
written++
if err != nil {
return written, err
}
ts, err := ptypes.Timestamp((*e).Timestamp)
if err != nil {
return written, err
}
// TODO(beorn7): Format this directly from components of ts to
// avoid overflow/underflow and precision issues of the float
// conversion.
n, err = writeOpenMetricsFloat(w, float64(ts.UnixNano())/1e9)
written += n
if err != nil {
return written, err
}
}
return written, nil
}
// writeOpenMetricsFloat works like writeFloat but appends ".0" if the resulting
// number would otherwise contain neither a "." nor an "e".
func writeOpenMetricsFloat(w enhancedWriter, f float64) (int, error) {
switch {
case f == 1:
return w.WriteString("1.0")
case f == 0:
return w.WriteString("0.0")
case f == -1:
return w.WriteString("-1.0")
case math.IsNaN(f):
return w.WriteString("NaN")
case math.IsInf(f, +1):
return w.WriteString("+Inf")
case math.IsInf(f, -1):
return w.WriteString("-Inf")
default:
bp := numBufPool.Get().(*[]byte)
*bp = strconv.AppendFloat((*bp)[:0], f, 'g', -1, 64)
if !bytes.ContainsAny(*bp, "e.") {
*bp = append(*bp, '.', '0')
}
written, err := w.Write(*bp)
numBufPool.Put(bp)
return written, err
}
}
// writeUint is like writeInt just for uint64.
func writeUint(w enhancedWriter, u uint64) (int, error) {
bp := numBufPool.Get().(*[]byte)
*bp = strconv.AppendUint((*bp)[:0], u, 10)
written, err := w.Write(*bp)
numBufPool.Put(bp)
return written, err
}

3
vendor/github.com/prometheus/common/expfmt/text_create.go generated vendored
View file

@ -423,9 +423,8 @@ var (
func writeEscapedString(w enhancedWriter, v string, includeDoubleQuote bool) (int, error) {
if includeDoubleQuote {
return quotedEscaper.WriteString(w, v)
} else {
return escaper.WriteString(w, v)
}
return escaper.WriteString(w, v)
}
// writeFloat is equivalent to fmt.Fprint with a float64 argument but hardcodes

17
vendor/github.com/prometheus/common/version/info.go generated vendored
View file

@ -33,9 +33,10 @@ var (
GoVersion = runtime.Version()
)
// NewCollector returns a collector which exports metrics about current version information.
func NewCollector(program string) *prometheus.GaugeVec {
buildInfo := prometheus.NewGaugeVec(
// NewCollector returns a collector that exports metrics about current version
// information.
func NewCollector(program string) prometheus.Collector {
return prometheus.NewGaugeFunc(
prometheus.GaugeOpts{
Namespace: program,
Name: "build_info",
@ -43,11 +44,15 @@ func NewCollector(program string) *prometheus.GaugeVec {
"A metric with a constant '1' value labeled by version, revision, branch, and goversion from which %s was built.",
program,
),
ConstLabels: prometheus.Labels{
"version": Version,
"revision": Revision,
"branch": Branch,
"goversion": GoVersion,
},
},
[]string{"version", "revision", "branch", "goversion"},
func() float64 { return 1 },
)
buildInfo.WithLabelValues(Version, Revision, Branch, GoVersion).Set(1)
return buildInfo
}
// versionInfoTmpl contains the template used by Info.