mirror of
https://github.com/prometheus/prometheus.git
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98 lines
2.7 KiB
Go
98 lines
2.7 KiB
Go
// 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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