summaryrefslogtreecommitdiff
path: root/vendor/github.com/prometheus/common/model/labelset.go
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/github.com/prometheus/common/model/labelset.go')
-rw-r--r--vendor/github.com/prometheus/common/model/labelset.go169
1 files changed, 0 insertions, 169 deletions
diff --git a/vendor/github.com/prometheus/common/model/labelset.go b/vendor/github.com/prometheus/common/model/labelset.go
deleted file mode 100644
index 6eda08a73..000000000
--- a/vendor/github.com/prometheus/common/model/labelset.go
+++ /dev/null
@@ -1,169 +0,0 @@
-// Copyright 2013 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 model
-
-import (
- "encoding/json"
- "fmt"
- "sort"
- "strings"
-)
-
-// A LabelSet is a collection of LabelName and LabelValue pairs. The LabelSet
-// may be fully-qualified down to the point where it may resolve to a single
-// Metric in the data store or not. All operations that occur within the realm
-// of a LabelSet can emit a vector of Metric entities to which the LabelSet may
-// match.
-type LabelSet map[LabelName]LabelValue
-
-// Validate checks whether all names and values in the label set
-// are valid.
-func (ls LabelSet) Validate() error {
- for ln, lv := range ls {
- if !ln.IsValid() {
- return fmt.Errorf("invalid name %q", ln)
- }
- if !lv.IsValid() {
- return fmt.Errorf("invalid value %q", lv)
- }
- }
- return nil
-}
-
-// Equal returns true iff both label sets have exactly the same key/value pairs.
-func (ls LabelSet) Equal(o LabelSet) bool {
- if len(ls) != len(o) {
- return false
- }
- for ln, lv := range ls {
- olv, ok := o[ln]
- if !ok {
- return false
- }
- if olv != lv {
- return false
- }
- }
- return true
-}
-
-// Before compares the metrics, using the following criteria:
-//
-// If m has fewer labels than o, it is before o. If it has more, it is not.
-//
-// If the number of labels is the same, the superset of all label names is
-// sorted alphanumerically. The first differing label pair found in that order
-// determines the outcome: If the label does not exist at all in m, then m is
-// before o, and vice versa. Otherwise the label value is compared
-// alphanumerically.
-//
-// If m and o are equal, the method returns false.
-func (ls LabelSet) Before(o LabelSet) bool {
- if len(ls) < len(o) {
- return true
- }
- if len(ls) > len(o) {
- return false
- }
-
- lns := make(LabelNames, 0, len(ls)+len(o))
- for ln := range ls {
- lns = append(lns, ln)
- }
- for ln := range o {
- lns = append(lns, ln)
- }
- // It's probably not worth it to de-dup lns.
- sort.Sort(lns)
- for _, ln := range lns {
- mlv, ok := ls[ln]
- if !ok {
- return true
- }
- olv, ok := o[ln]
- if !ok {
- return false
- }
- if mlv < olv {
- return true
- }
- if mlv > olv {
- return false
- }
- }
- return false
-}
-
-// Clone returns a copy of the label set.
-func (ls LabelSet) Clone() LabelSet {
- lsn := make(LabelSet, len(ls))
- for ln, lv := range ls {
- lsn[ln] = lv
- }
- return lsn
-}
-
-// Merge is a helper function to non-destructively merge two label sets.
-func (l LabelSet) Merge(other LabelSet) LabelSet {
- result := make(LabelSet, len(l))
-
- for k, v := range l {
- result[k] = v
- }
-
- for k, v := range other {
- result[k] = v
- }
-
- return result
-}
-
-func (l LabelSet) String() string {
- lstrs := make([]string, 0, len(l))
- for l, v := range l {
- lstrs = append(lstrs, fmt.Sprintf("%s=%q", l, v))
- }
-
- sort.Strings(lstrs)
- return fmt.Sprintf("{%s}", strings.Join(lstrs, ", "))
-}
-
-// Fingerprint returns the LabelSet's fingerprint.
-func (ls LabelSet) Fingerprint() Fingerprint {
- return labelSetToFingerprint(ls)
-}
-
-// FastFingerprint returns the LabelSet's Fingerprint calculated by a faster hashing
-// algorithm, which is, however, more susceptible to hash collisions.
-func (ls LabelSet) FastFingerprint() Fingerprint {
- return labelSetToFastFingerprint(ls)
-}
-
-// UnmarshalJSON implements the json.Unmarshaler interface.
-func (l *LabelSet) UnmarshalJSON(b []byte) error {
- var m map[LabelName]LabelValue
- if err := json.Unmarshal(b, &m); err != nil {
- return err
- }
- // encoding/json only unmarshals maps of the form map[string]T. It treats
- // LabelName as a string and does not call its UnmarshalJSON method.
- // Thus, we have to replicate the behavior here.
- for ln := range m {
- if !ln.IsValid() {
- return fmt.Errorf("%q is not a valid label name", ln)
- }
- }
- *l = LabelSet(m)
- return nil
-}