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50 lines
1.9 KiB
50 lines
1.9 KiB
// Copyright 2019 The Prometheus Authors |
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// Licensed under the Apache License, Version 2.0 (the "License"); |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// http://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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package exemplar |
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import "github.com/prometheus/prometheus/model/labels" |
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// The combined length of the label names and values of an Exemplar's LabelSet MUST NOT exceed 128 UTF-8 characters |
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// https://github.com/OpenObservability/OpenMetrics/blob/main/specification/OpenMetrics.md#exemplars |
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const ExemplarMaxLabelSetLength = 128 |
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// Exemplar is additional information associated with a time series. |
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type Exemplar struct { |
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Labels labels.Labels `json:"labels"` |
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Value float64 `json:"value"` |
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Ts int64 `json:"timestamp"` |
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HasTs bool |
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} |
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type QueryResult struct { |
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SeriesLabels labels.Labels `json:"seriesLabels"` |
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Exemplars []Exemplar `json:"exemplars"` |
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} |
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// Equals compares if the exemplar e is the same as e2. Note that if HasTs is false for |
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// both exemplars then the timestamps will be ignored for the comparison. This can come up |
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// when an exemplar is exported without it's own timestamp, in which case the scrape timestamp |
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// is assigned to the Ts field. However we still want to treat the same exemplar, scraped without |
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// an exported timestamp, as a duplicate of itself for each subsequent scrape. |
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func (e Exemplar) Equals(e2 Exemplar) bool { |
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if !labels.Equal(e.Labels, e2.Labels) { |
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return false |
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} |
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if (e.HasTs || e2.HasTs) && e.Ts != e2.Ts { |
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return false |
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} |
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return e.Value == e2.Value |
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}
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