mirror of https://github.com/grafana/loki
Copy `cortex/pkg/prom1` package dependency into Loki (#5196)
* Fork cortex `prom1`. * Use forked `prom1` instead of Cortex one.pull/5110/head
Dylan Guedes
4 years ago
committed by
GitHub
parent
c9d49cea6f
commit
3f78d876ff
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// This file was taken from Prometheus (https://github.com/prometheus/prometheus).
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// The original license header is included below:
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//
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// Copyright 2014 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 metric |
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import "github.com/prometheus/common/model" |
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// Metric wraps a model.Metric and copies it upon modification if Copied is false.
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type Metric struct { |
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Copied bool |
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Metric model.Metric |
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} |
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// Set sets a label name in the wrapped Metric to a given value and copies the
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// Metric initially, if it is not already a copy.
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func (m *Metric) Set(ln model.LabelName, lv model.LabelValue) { |
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m.Copy() |
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m.Metric[ln] = lv |
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} |
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// Del deletes a given label name from the wrapped Metric and copies the
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// Metric initially, if it is not already a copy.
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func (m *Metric) Del(ln model.LabelName) { |
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m.Copy() |
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delete(m.Metric, ln) |
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} |
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// Get the value for the given label name. An empty value is returned
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// if the label does not exist in the metric.
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func (m *Metric) Get(ln model.LabelName) model.LabelValue { |
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return m.Metric[ln] |
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} |
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// Gets behaves as Get but the returned boolean is false iff the label
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// does not exist.
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func (m *Metric) Gets(ln model.LabelName) (model.LabelValue, bool) { |
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lv, ok := m.Metric[ln] |
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return lv, ok |
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} |
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// Copy the underlying Metric if it is not already a copy.
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func (m *Metric) Copy() *Metric { |
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if !m.Copied { |
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m.Metric = m.Metric.Clone() |
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m.Copied = true |
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} |
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return m |
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} |
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// String implements fmt.Stringer.
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func (m Metric) String() string { |
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return m.Metric.String() |
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} |
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@ -0,0 +1,73 @@ |
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// This file was taken from Prometheus (https://github.com/prometheus/prometheus).
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// The original license header is included below:
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//
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// Copyright 2014 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 metric |
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import ( |
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"testing" |
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"github.com/prometheus/common/model" |
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) |
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func TestMetric(t *testing.T) { |
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testMetric := model.Metric{ |
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"to_delete": "test1", |
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"to_change": "test2", |
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} |
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scenarios := []struct { |
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fn func(*Metric) |
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out model.Metric |
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}{ |
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{ |
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fn: func(cm *Metric) { |
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cm.Del("to_delete") |
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}, |
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out: model.Metric{ |
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"to_change": "test2", |
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}, |
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}, |
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{ |
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fn: func(cm *Metric) { |
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cm.Set("to_change", "changed") |
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}, |
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out: model.Metric{ |
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"to_delete": "test1", |
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"to_change": "changed", |
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}, |
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}, |
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} |
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for i, s := range scenarios { |
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orig := testMetric.Clone() |
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cm := &Metric{ |
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Metric: orig, |
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Copied: false, |
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} |
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s.fn(cm) |
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// Test that the original metric was not modified.
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if !orig.Equal(testMetric) { |
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t.Fatalf("%d. original metric changed; expected %v, got %v", i, testMetric, orig) |
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} |
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// Test that the new metric has the right changes.
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if !cm.Metric.Equal(s.out) { |
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t.Fatalf("%d. copied metric doesn't contain expected changes; expected %v, got %v", i, s.out, cm.Metric) |
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} |
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} |
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} |
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@ -0,0 +1,25 @@ |
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// This file was taken from Prometheus (https://github.com/prometheus/prometheus).
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// The original license header is included below:
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//
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// Copyright 2013 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 metric |
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import "github.com/prometheus/common/model" |
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// Interval describes the inclusive interval between two Timestamps.
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type Interval struct { |
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OldestInclusive model.Time |
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NewestInclusive model.Time |
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} |
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