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8f4c7ece92
The use of naked return values is frowned upon. This is the first of two bulk updates to remove them.
85 lines
2.3 KiB
Go
85 lines
2.3 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 leveldb
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import (
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"github.com/prometheus/prometheus/coding"
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"github.com/prometheus/prometheus/storage/raw"
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"github.com/prometheus/prometheus/storage/raw/leveldb"
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)
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type indexValue struct{}
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func (i *indexValue) MustEncode() []byte {
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return []byte{}
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}
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var (
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existenceValue = &indexValue{}
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)
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type LevelDBMembershipIndex struct {
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persistence *leveldb.LevelDBPersistence
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}
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func (l *LevelDBMembershipIndex) Close() {
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l.persistence.Close()
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}
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func (l *LevelDBMembershipIndex) Has(key coding.Encoder) (bool, error) {
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return l.persistence.Has(key)
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}
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func (l *LevelDBMembershipIndex) Drop(key coding.Encoder) error {
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return l.persistence.Drop(key)
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}
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func (l *LevelDBMembershipIndex) Put(key coding.Encoder) error {
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return l.persistence.Put(key, existenceValue)
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}
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func NewLevelDBMembershipIndex(storageRoot string, cacheCapacity, bitsPerBloomFilterEncoded int) (i *LevelDBMembershipIndex, err error) {
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leveldbPersistence, err := leveldb.NewLevelDBPersistence(storageRoot, cacheCapacity, bitsPerBloomFilterEncoded)
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if err != nil {
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return
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}
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i = &LevelDBMembershipIndex{
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persistence: leveldbPersistence,
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}
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return
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}
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func (l *LevelDBMembershipIndex) Commit(batch raw.Batch) error {
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return l.persistence.Commit(batch)
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}
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// CompactKeyspace compacts the entire database's keyspace.
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//
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// Beware that it would probably be imprudent to run this on a live user-facing
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// server due to latency implications.
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func (l *LevelDBMembershipIndex) CompactKeyspace() {
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l.persistence.CompactKeyspace()
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}
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func (l *LevelDBMembershipIndex) ApproximateSize() (uint64, error) {
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return l.persistence.ApproximateSize()
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}
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func (l *LevelDBMembershipIndex) State() leveldb.DatabaseState {
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return l.persistence.State()
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}
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