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83 lines
1.8 KiB
83 lines
1.8 KiB
// Copyright 2017 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 storage |
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import ( |
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"math" |
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"github.com/prometheus/prometheus/pkg/labels" |
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) |
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type noopQuerier struct{} |
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// NoopQuerier is a Querier that does nothing. |
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func NoopQuerier() Querier { |
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return noopQuerier{} |
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} |
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func (noopQuerier) Select(*SelectParams, ...*labels.Matcher) (SeriesSet, Warnings, error) { |
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return NoopSeriesSet(), nil, nil |
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} |
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func (noopQuerier) LabelValues(name string) ([]string, Warnings, error) { |
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return nil, nil, nil |
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} |
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func (noopQuerier) LabelNames() ([]string, Warnings, error) { |
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return nil, nil, nil |
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} |
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func (noopQuerier) Close() error { |
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return nil |
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} |
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type noopSeriesSet struct{} |
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// NoopSeriesSet is a SeriesSet that does nothing. |
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func NoopSeriesSet() SeriesSet { |
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return noopSeriesSet{} |
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} |
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func (noopSeriesSet) Next() bool { |
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return false |
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} |
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func (noopSeriesSet) At() Series { |
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return nil |
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} |
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func (noopSeriesSet) Err() error { |
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return nil |
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} |
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type noopSeriesIterator struct{} |
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// NoopSeriesIt is a SeriesIterator that does nothing. |
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var NoopSeriesIt = noopSeriesIterator{} |
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func (noopSeriesIterator) At() (int64, float64) { |
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return math.MinInt64, 0 |
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} |
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func (noopSeriesIterator) Seek(t int64) bool { |
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return false |
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} |
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func (noopSeriesIterator) Next() bool { |
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return false |
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} |
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func (noopSeriesIterator) Err() error { |
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return nil |
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}
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