prometheus/storage/raw/leveldb/state.go
Matt T. Proud d8792cfd86 Extract HighWatermarking.
Clean up the rest.
2013-08-05 11:03:03 +02:00

75 lines
2 KiB
Go

// Copyright 2013 Prometheus Team
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package leveldb
import (
"bytes"
"fmt"
"github.com/prometheus/prometheus/utility"
)
const (
statsKey = "leveldb.stats"
sstablesKey = "leveldb.sstables"
)
// DatabaseState models a bundle of metadata about a LevelDB database used in
// template format string interpolation.
type DatabaseState struct {
Name string
Purpose string
Path string
LowLevelStatus string
SSTablesStatus string
ApproximateSize utility.ByteSize
Error error
}
func (s DatabaseState) String() string {
b := new(bytes.Buffer)
fmt.Fprintln(b, "Name:", s.Name)
fmt.Fprintln(b, "Path:", s.Path)
fmt.Fprintln(b, "Purpose:", s.Purpose)
fmt.Fprintln(b, "Low Level Diagnostics:", s.LowLevelStatus)
fmt.Fprintln(b, "SSTable Statistics:", s.SSTablesStatus)
fmt.Fprintln(b, "Approximate Size:", s.ApproximateSize)
fmt.Fprintln(b, "Error:", s.Error)
return b.String()
}
func (l *LevelDBPersistence) LowLevelState() DatabaseState {
databaseState := DatabaseState{
Path: l.path,
Name: l.name,
Purpose: l.purpose,
LowLevelStatus: l.storage.PropertyValue(statsKey),
SSTablesStatus: l.storage.PropertyValue(sstablesKey),
}
if size, err := l.ApproximateSize(); err != nil {
databaseState.Error = err
} else {
databaseState.ApproximateSize = utility.ByteSize(size)
}
return databaseState
}
func (l *LevelDBPersistence) State() string {
return l.LowLevelState().String()
}