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b224251981
This commit simplifies the way that compactions across a database's keyspace occur due to reading the LevelDB internals. Secondarily it introduces the database size estimation mechanisms. Include database health and help interfaces. Add database statistics; remove status goroutines. This commit kills the use of Go routines to expose status throughout the web components of Prometheus. It also dumps raw LevelDB status on a separate /databases endpoint.
55 lines
1.5 KiB
Go
55 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 leveldb
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import (
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"github.com/prometheus/prometheus/utility"
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"time"
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)
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const (
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statsKey = "leveldb.stats"
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sstablesKey = "leveldb.sstables"
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)
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// DatabaseState models a bundle of metadata about a LevelDB database used in
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// template format string interpolation.
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type DatabaseState struct {
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LastRefreshed time.Time
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Type string
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Name string
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Path string
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LowLevelStatus string
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SSTablesStatus string
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ApproximateSize utility.ByteSize
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Error error
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}
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func (l *LevelDBPersistence) State() DatabaseState {
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databaseState := DatabaseState{
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LastRefreshed: time.Now(),
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Path: l.path,
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LowLevelStatus: l.storage.PropertyValue(statsKey),
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SSTablesStatus: l.storage.PropertyValue(sstablesKey),
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}
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if size, err := l.ApproximateSize(); err != nil {
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databaseState.Error = err
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} else {
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databaseState.ApproximateSize = utility.ByteSize(size)
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}
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return databaseState
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}
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