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Diffstat (limited to 'vendor/github.com/prometheus/common/model/value.go')
-rw-r--r-- | vendor/github.com/prometheus/common/model/value.go | 364 |
1 files changed, 0 insertions, 364 deletions
diff --git a/vendor/github.com/prometheus/common/model/value.go b/vendor/github.com/prometheus/common/model/value.go deleted file mode 100644 index 8050637d8..000000000 --- a/vendor/github.com/prometheus/common/model/value.go +++ /dev/null @@ -1,364 +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" - "strconv" - "strings" -) - -// ZeroSample is the pseudo zero-value of Sample used to signal a -// non-existing sample. It is a Sample with timestamp Earliest, value 0.0, -// and metric nil. Note that the natural zero value of Sample has a timestamp -// of 0, which is possible to appear in a real Sample and thus not suitable -// to signal a non-existing Sample. -var ZeroSample = Sample{Timestamp: Earliest} - -// Sample is a sample pair associated with a metric. A single sample must either -// define Value or Histogram but not both. Histogram == nil implies the Value -// field is used, otherwise it should be ignored. -type Sample struct { - Metric Metric `json:"metric"` - Value SampleValue `json:"value"` - Timestamp Time `json:"timestamp"` - Histogram *SampleHistogram `json:"histogram"` -} - -// Equal compares first the metrics, then the timestamp, then the value. The -// semantics of value equality is defined by SampleValue.Equal. -func (s *Sample) Equal(o *Sample) bool { - if s == o { - return true - } - - if !s.Metric.Equal(o.Metric) { - return false - } - if !s.Timestamp.Equal(o.Timestamp) { - return false - } - if s.Histogram != nil { - return s.Histogram.Equal(o.Histogram) - } - return s.Value.Equal(o.Value) -} - -func (s Sample) String() string { - if s.Histogram != nil { - return fmt.Sprintf("%s => %s", s.Metric, SampleHistogramPair{ - Timestamp: s.Timestamp, - Histogram: s.Histogram, - }) - } - return fmt.Sprintf("%s => %s", s.Metric, SamplePair{ - Timestamp: s.Timestamp, - Value: s.Value, - }) -} - -// MarshalJSON implements json.Marshaler. -func (s Sample) MarshalJSON() ([]byte, error) { - if s.Histogram != nil { - v := struct { - Metric Metric `json:"metric"` - Histogram SampleHistogramPair `json:"histogram"` - }{ - Metric: s.Metric, - Histogram: SampleHistogramPair{ - Timestamp: s.Timestamp, - Histogram: s.Histogram, - }, - } - return json.Marshal(&v) - } - v := struct { - Metric Metric `json:"metric"` - Value SamplePair `json:"value"` - }{ - Metric: s.Metric, - Value: SamplePair{ - Timestamp: s.Timestamp, - Value: s.Value, - }, - } - return json.Marshal(&v) -} - -// UnmarshalJSON implements json.Unmarshaler. -func (s *Sample) UnmarshalJSON(b []byte) error { - v := struct { - Metric Metric `json:"metric"` - Value SamplePair `json:"value"` - Histogram SampleHistogramPair `json:"histogram"` - }{ - Metric: s.Metric, - Value: SamplePair{ - Timestamp: s.Timestamp, - Value: s.Value, - }, - Histogram: SampleHistogramPair{ - Timestamp: s.Timestamp, - Histogram: s.Histogram, - }, - } - - if err := json.Unmarshal(b, &v); err != nil { - return err - } - - s.Metric = v.Metric - if v.Histogram.Histogram != nil { - s.Timestamp = v.Histogram.Timestamp - s.Histogram = v.Histogram.Histogram - } else { - s.Timestamp = v.Value.Timestamp - s.Value = v.Value.Value - } - - return nil -} - -// Samples is a sortable Sample slice. It implements sort.Interface. -type Samples []*Sample - -func (s Samples) Len() int { - return len(s) -} - -// Less compares first the metrics, then the timestamp. -func (s Samples) Less(i, j int) bool { - switch { - case s[i].Metric.Before(s[j].Metric): - return true - case s[j].Metric.Before(s[i].Metric): - return false - case s[i].Timestamp.Before(s[j].Timestamp): - return true - default: - return false - } -} - -func (s Samples) Swap(i, j int) { - s[i], s[j] = s[j], s[i] -} - -// Equal compares two sets of samples and returns true if they are equal. -func (s Samples) Equal(o Samples) bool { - if len(s) != len(o) { - return false - } - - for i, sample := range s { - if !sample.Equal(o[i]) { - return false - } - } - return true -} - -// SampleStream is a stream of Values belonging to an attached COWMetric. -type SampleStream struct { - Metric Metric `json:"metric"` - Values []SamplePair `json:"values"` - Histograms []SampleHistogramPair `json:"histograms"` -} - -func (ss SampleStream) String() string { - valuesLength := len(ss.Values) - vals := make([]string, valuesLength+len(ss.Histograms)) - for i, v := range ss.Values { - vals[i] = v.String() - } - for i, v := range ss.Histograms { - vals[i+valuesLength] = v.String() - } - return fmt.Sprintf("%s =>\n%s", ss.Metric, strings.Join(vals, "\n")) -} - -func (ss SampleStream) MarshalJSON() ([]byte, error) { - if len(ss.Histograms) > 0 && len(ss.Values) > 0 { - v := struct { - Metric Metric `json:"metric"` - Values []SamplePair `json:"values"` - Histograms []SampleHistogramPair `json:"histograms"` - }{ - Metric: ss.Metric, - Values: ss.Values, - Histograms: ss.Histograms, - } - return json.Marshal(&v) - } else if len(ss.Histograms) > 0 { - v := struct { - Metric Metric `json:"metric"` - Histograms []SampleHistogramPair `json:"histograms"` - }{ - Metric: ss.Metric, - Histograms: ss.Histograms, - } - return json.Marshal(&v) - } else { - v := struct { - Metric Metric `json:"metric"` - Values []SamplePair `json:"values"` - }{ - Metric: ss.Metric, - Values: ss.Values, - } - return json.Marshal(&v) - } -} - -func (ss *SampleStream) UnmarshalJSON(b []byte) error { - v := struct { - Metric Metric `json:"metric"` - Values []SamplePair `json:"values"` - Histograms []SampleHistogramPair `json:"histograms"` - }{ - Metric: ss.Metric, - Values: ss.Values, - Histograms: ss.Histograms, - } - - if err := json.Unmarshal(b, &v); err != nil { - return err - } - - ss.Metric = v.Metric - ss.Values = v.Values - ss.Histograms = v.Histograms - - return nil -} - -// Scalar is a scalar value evaluated at the set timestamp. -type Scalar struct { - Value SampleValue `json:"value"` - Timestamp Time `json:"timestamp"` -} - -func (s Scalar) String() string { - return fmt.Sprintf("scalar: %v @[%v]", s.Value, s.Timestamp) -} - -// MarshalJSON implements json.Marshaler. -func (s Scalar) MarshalJSON() ([]byte, error) { - v := strconv.FormatFloat(float64(s.Value), 'f', -1, 64) - return json.Marshal([...]interface{}{s.Timestamp, string(v)}) -} - -// UnmarshalJSON implements json.Unmarshaler. -func (s *Scalar) UnmarshalJSON(b []byte) error { - var f string - v := [...]interface{}{&s.Timestamp, &f} - - if err := json.Unmarshal(b, &v); err != nil { - return err - } - - value, err := strconv.ParseFloat(f, 64) - if err != nil { - return fmt.Errorf("error parsing sample value: %w", err) - } - s.Value = SampleValue(value) - return nil -} - -// String is a string value evaluated at the set timestamp. -type String struct { - Value string `json:"value"` - Timestamp Time `json:"timestamp"` -} - -func (s *String) String() string { - return s.Value -} - -// MarshalJSON implements json.Marshaler. -func (s String) MarshalJSON() ([]byte, error) { - return json.Marshal([]interface{}{s.Timestamp, s.Value}) -} - -// UnmarshalJSON implements json.Unmarshaler. -func (s *String) UnmarshalJSON(b []byte) error { - v := [...]interface{}{&s.Timestamp, &s.Value} - return json.Unmarshal(b, &v) -} - -// Vector is basically only an alias for Samples, but the -// contract is that in a Vector, all Samples have the same timestamp. -type Vector []*Sample - -func (vec Vector) String() string { - entries := make([]string, len(vec)) - for i, s := range vec { - entries[i] = s.String() - } - return strings.Join(entries, "\n") -} - -func (vec Vector) Len() int { return len(vec) } -func (vec Vector) Swap(i, j int) { vec[i], vec[j] = vec[j], vec[i] } - -// Less compares first the metrics, then the timestamp. -func (vec Vector) Less(i, j int) bool { - switch { - case vec[i].Metric.Before(vec[j].Metric): - return true - case vec[j].Metric.Before(vec[i].Metric): - return false - case vec[i].Timestamp.Before(vec[j].Timestamp): - return true - default: - return false - } -} - -// Equal compares two sets of samples and returns true if they are equal. -func (vec Vector) Equal(o Vector) bool { - if len(vec) != len(o) { - return false - } - - for i, sample := range vec { - if !sample.Equal(o[i]) { - return false - } - } - return true -} - -// Matrix is a list of time series. -type Matrix []*SampleStream - -func (m Matrix) Len() int { return len(m) } -func (m Matrix) Less(i, j int) bool { return m[i].Metric.Before(m[j].Metric) } -func (m Matrix) Swap(i, j int) { m[i], m[j] = m[j], m[i] } - -func (mat Matrix) String() string { - matCp := make(Matrix, len(mat)) - copy(matCp, mat) - sort.Sort(matCp) - - strs := make([]string, len(matCp)) - - for i, ss := range matCp { - strs[i] = ss.String() - } - - return strings.Join(strs, "\n") -} |