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97 lines
2.7 KiB
97 lines
2.7 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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"context" |
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"github.com/prometheus/prometheus/model/labels" |
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"github.com/prometheus/prometheus/util/annotations" |
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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(context.Context, bool, *SelectHints, ...*labels.Matcher) SeriesSet { |
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return NoopSeriesSet() |
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} |
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func (noopQuerier) LabelValues(context.Context, string, *LabelHints, ...*labels.Matcher) ([]string, annotations.Annotations, error) { |
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return nil, nil, nil |
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} |
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func (noopQuerier) LabelNames(context.Context, *LabelHints, ...*labels.Matcher) ([]string, annotations.Annotations, 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 noopChunkQuerier struct{} |
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// NoopChunkedQuerier is a ChunkQuerier that does nothing. |
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func NoopChunkedQuerier() ChunkQuerier { |
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return noopChunkQuerier{} |
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} |
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func (noopChunkQuerier) Select(context.Context, bool, *SelectHints, ...*labels.Matcher) ChunkSeriesSet { |
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return NoopChunkedSeriesSet() |
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} |
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func (noopChunkQuerier) LabelValues(context.Context, string, *LabelHints, ...*labels.Matcher) ([]string, annotations.Annotations, error) { |
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return nil, nil, nil |
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} |
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func (noopChunkQuerier) LabelNames(context.Context, *LabelHints, ...*labels.Matcher) ([]string, annotations.Annotations, error) { |
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return nil, nil, nil |
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} |
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func (noopChunkQuerier) 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 { return false } |
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func (noopSeriesSet) At() Series { return nil } |
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func (noopSeriesSet) Err() error { return nil } |
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func (noopSeriesSet) Warnings() annotations.Annotations { return nil } |
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type noopChunkedSeriesSet struct{} |
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// NoopChunkedSeriesSet is a ChunkSeriesSet that does nothing. |
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func NoopChunkedSeriesSet() ChunkSeriesSet { |
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return noopChunkedSeriesSet{} |
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} |
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func (noopChunkedSeriesSet) Next() bool { return false } |
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func (noopChunkedSeriesSet) At() ChunkSeries { return nil } |
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func (noopChunkedSeriesSet) Err() error { return nil } |
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func (noopChunkedSeriesSet) Warnings() annotations.Annotations { return nil }
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