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-rw-r--r--vendor/github.com/prometheus/client_golang/prometheus/desc.go186
1 files changed, 0 insertions, 186 deletions
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/desc.go b/vendor/github.com/prometheus/client_golang/prometheus/desc.go
deleted file mode 100644
index 4bb816ab7..000000000
--- a/vendor/github.com/prometheus/client_golang/prometheus/desc.go
+++ /dev/null
@@ -1,186 +0,0 @@
-// Copyright 2016 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 prometheus
-
-import (
- "errors"
- "fmt"
- "sort"
- "strings"
-
- "github.com/cespare/xxhash/v2"
- //nolint:staticcheck // Ignore SA1019. Need to keep deprecated package for compatibility.
- "github.com/golang/protobuf/proto"
- "github.com/prometheus/common/model"
-
- dto "github.com/prometheus/client_model/go"
-)
-
-// Desc is the descriptor used by every Prometheus Metric. It is essentially
-// the immutable meta-data of a Metric. The normal Metric implementations
-// included in this package manage their Desc under the hood. Users only have to
-// deal with Desc if they use advanced features like the ExpvarCollector or
-// custom Collectors and Metrics.
-//
-// Descriptors registered with the same registry have to fulfill certain
-// consistency and uniqueness criteria if they share the same fully-qualified
-// name: They must have the same help string and the same label names (aka label
-// dimensions) in each, constLabels and variableLabels, but they must differ in
-// the values of the constLabels.
-//
-// Descriptors that share the same fully-qualified names and the same label
-// values of their constLabels are considered equal.
-//
-// Use NewDesc to create new Desc instances.
-type Desc struct {
- // fqName has been built from Namespace, Subsystem, and Name.
- fqName string
- // help provides some helpful information about this metric.
- help string
- // constLabelPairs contains precalculated DTO label pairs based on
- // the constant labels.
- constLabelPairs []*dto.LabelPair
- // variableLabels contains names of labels for which the metric
- // maintains variable values.
- variableLabels []string
- // id is a hash of the values of the ConstLabels and fqName. This
- // must be unique among all registered descriptors and can therefore be
- // used as an identifier of the descriptor.
- id uint64
- // dimHash is a hash of the label names (preset and variable) and the
- // Help string. Each Desc with the same fqName must have the same
- // dimHash.
- dimHash uint64
- // err is an error that occurred during construction. It is reported on
- // registration time.
- err error
-}
-
-// NewDesc allocates and initializes a new Desc. Errors are recorded in the Desc
-// and will be reported on registration time. variableLabels and constLabels can
-// be nil if no such labels should be set. fqName must not be empty.
-//
-// variableLabels only contain the label names. Their label values are variable
-// and therefore not part of the Desc. (They are managed within the Metric.)
-//
-// For constLabels, the label values are constant. Therefore, they are fully
-// specified in the Desc. See the Collector example for a usage pattern.
-func NewDesc(fqName, help string, variableLabels []string, constLabels Labels) *Desc {
- d := &Desc{
- fqName: fqName,
- help: help,
- variableLabels: variableLabels,
- }
- if !model.IsValidMetricName(model.LabelValue(fqName)) {
- d.err = fmt.Errorf("%q is not a valid metric name", fqName)
- return d
- }
- // labelValues contains the label values of const labels (in order of
- // their sorted label names) plus the fqName (at position 0).
- labelValues := make([]string, 1, len(constLabels)+1)
- labelValues[0] = fqName
- labelNames := make([]string, 0, len(constLabels)+len(variableLabels))
- labelNameSet := map[string]struct{}{}
- // First add only the const label names and sort them...
- for labelName := range constLabels {
- if !checkLabelName(labelName) {
- d.err = fmt.Errorf("%q is not a valid label name for metric %q", labelName, fqName)
- return d
- }
- labelNames = append(labelNames, labelName)
- labelNameSet[labelName] = struct{}{}
- }
- sort.Strings(labelNames)
- // ... so that we can now add const label values in the order of their names.
- for _, labelName := range labelNames {
- labelValues = append(labelValues, constLabels[labelName])
- }
- // Validate the const label values. They can't have a wrong cardinality, so
- // use in len(labelValues) as expectedNumberOfValues.
- if err := validateLabelValues(labelValues, len(labelValues)); err != nil {
- d.err = err
- return d
- }
- // Now add the variable label names, but prefix them with something that
- // cannot be in a regular label name. That prevents matching the label
- // dimension with a different mix between preset and variable labels.
- for _, labelName := range variableLabels {
- if !checkLabelName(labelName) {
- d.err = fmt.Errorf("%q is not a valid label name for metric %q", labelName, fqName)
- return d
- }
- labelNames = append(labelNames, "$"+labelName)
- labelNameSet[labelName] = struct{}{}
- }
- if len(labelNames) != len(labelNameSet) {
- d.err = errors.New("duplicate label names")
- return d
- }
-
- xxh := xxhash.New()
- for _, val := range labelValues {
- xxh.WriteString(val)
- xxh.Write(separatorByteSlice)
- }
- 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.
- xxh.Reset()
- xxh.WriteString(help)
- xxh.Write(separatorByteSlice)
- for _, labelName := range labelNames {
- xxh.WriteString(labelName)
- xxh.Write(separatorByteSlice)
- }
- d.dimHash = xxh.Sum64()
-
- d.constLabelPairs = make([]*dto.LabelPair, 0, len(constLabels))
- for n, v := range constLabels {
- d.constLabelPairs = append(d.constLabelPairs, &dto.LabelPair{
- Name: proto.String(n),
- Value: proto.String(v),
- })
- }
- sort.Sort(labelPairSorter(d.constLabelPairs))
- return d
-}
-
-// NewInvalidDesc returns an invalid descriptor, i.e. a descriptor with the
-// provided error set. If a collector returning such a descriptor is registered,
-// registration will fail with the provided error. NewInvalidDesc can be used by
-// a Collector to signal inability to describe itself.
-func NewInvalidDesc(err error) *Desc {
- return &Desc{
- err: err,
- }
-}
-
-func (d *Desc) String() string {
- lpStrings := make([]string, 0, len(d.constLabelPairs))
- for _, lp := range d.constLabelPairs {
- lpStrings = append(
- lpStrings,
- fmt.Sprintf("%s=%q", lp.GetName(), lp.GetValue()),
- )
- }
- return fmt.Sprintf(
- "Desc{fqName: %q, help: %q, constLabels: {%s}, variableLabels: %v}",
- d.fqName,
- d.help,
- strings.Join(lpStrings, ","),
- d.variableLabels,
- )
-}