59 lines
1.8 KiB
Go
59 lines
1.8 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 leveldb
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import (
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"github.com/matttproud/prometheus/coding"
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data "github.com/matttproud/prometheus/model/generated"
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"github.com/matttproud/prometheus/storage/raw/leveldb"
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)
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var (
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existenceValue = coding.NewProtocolBufferEncoder(&data.MembershipIndexValueDDO{})
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)
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type LevigoMembershipIndex struct {
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persistence *leveldb.LevigoPersistence
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}
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func (l *LevigoMembershipIndex) Close() error {
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return l.persistence.Close()
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}
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func (l *LevigoMembershipIndex) 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 *LevigoMembershipIndex) Drop(key coding.Encoder) error {
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return l.persistence.Drop(key)
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}
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func (l *LevigoMembershipIndex) Put(key coding.Encoder) error {
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return l.persistence.Put(key, existenceValue)
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}
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func NewLevigoMembershipIndex(storageRoot string, cacheCapacity, bitsPerBloomFilterEncoded int) (*LevigoMembershipIndex, error) {
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var levigoPersistence *leveldb.LevigoPersistence
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var levigoPersistenceError error
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if levigoPersistence, levigoPersistenceError = leveldb.NewLevigoPersistence(storageRoot, cacheCapacity, bitsPerBloomFilterEncoded); levigoPersistenceError == nil {
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levigoMembershipIndex := &LevigoMembershipIndex{
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persistence: levigoPersistence,
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}
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return levigoMembershipIndex, nil
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}
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return nil, levigoPersistenceError
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}
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