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48 lines
1.5 KiB
Go
48 lines
1.5 KiB
Go
// Copyright 2013 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 raw
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import (
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"github.com/prometheus/prometheus/coding"
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"github.com/prometheus/prometheus/storage"
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)
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type Pair struct {
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Left []byte
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Right []byte
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}
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type EachFunc func(pair *Pair)
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type Persistence interface {
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Has(key coding.Encoder) (bool, error)
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Get(key coding.Encoder) ([]byte, error)
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Drop(key coding.Encoder) error
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Put(key, value coding.Encoder) error
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Close() error
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// ForEach is responsible for iterating through all records in the database
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// until one of the following conditions are met:
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//
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// 1.) A system anomaly in the database scan.
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// 2.) The last record in the database is reached.
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// 3.) A FilterResult of STOP is emitted by the Filter.
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//
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// Decoding errors for an entity cause that entity to be skipped.
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ForEach(decoder storage.RecordDecoder, filter storage.RecordFilter, operator storage.RecordOperator) (scannedEntireCorpus bool, err error)
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// Pending removal.
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GetAll() ([]Pair, error)
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}
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