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15a6681651
Kill LevelDB watermarks due to redundancy. General interface documentation has begun. Creating custom types for the model to prevent errors down the road. Renaming of components for easier comprehension. Exposition of interface in LevelDB. Slew of simple refactorings.
48 lines
1.6 KiB
Go
48 lines
1.6 KiB
Go
// Copyright 2012 Prometheus Team
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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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"github.com/matttproud/prometheus/model"
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)
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// MetricPersistence is a system for storing metric samples in a persistence
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// layer.
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type MetricPersistence interface {
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// A storage system may rely on external resources and thusly should be
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// closed when finished.
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Close() error
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// Record a new sample in the storage layer.
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AppendSample(sample *model.Sample) error
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// Get all of the metric fingerprints that are associated with the provided
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// label set.
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GetFingerprintsForLabelSet(labelSet *model.LabelSet) ([]*model.Fingerprint, error)
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GetFingerprintsForLabelName(labelName *model.LabelName) ([]*model.Fingerprint, error)
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GetAllLabelNames() ([]string, error)
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GetAllLabelPairs() ([]model.LabelSet, error)
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GetAllMetrics() ([]model.LabelSet, error)
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// // BEGIN QUERY PRIMITIVES
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//
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// GetMetricForFingerprint()
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// GetMetricWatermarks(metrics ...) (watermarks ...)
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// GetMetricValuesForIntervals(metric, interval) (values ...)
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// GetMetricValueLast()
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// // END QUERY PRIMITIVES
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}
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