prometheus/storage/raw/leveldb/state.go
Bjoern Rabenstein 6bc083f38b Major code cleanup in storage.
- Mostly docstring fixed/additions.
  (Please review these carefully, since most of them were missing, I
  had to guess them from an outsider's perspective. (Which on the
  other hand proves how desperately required many of these docstrings
  are.))

- Removed all uses of new(...) to meet our own style guide (draft).

- Fixed all other 'go vet' and 'golint' issues (except those that are
  not fixable (i.e. caused by bugs in or by design of 'go vet' and
  'golint')).

- Some trivial refactorings, like reorder functions, minor renames, ...

- Some slightly less trivial refactoring, mostly to reduce code
  duplication by embedding types instead of writing many explicit
  forwarders.

- Cleaned up the interface structure a bit. (Most significant probably
  the removal of the View-like methods from MetricPersistenc. Now they
  are only in View and not duplicated anymore.)

- Removed dead code. (Probably not all of it, but it's a first
  step...)

- Fixed a leftover in storage/metric/end_to_end_test.go (that made
  some parts of the code never execute (incidentally, those parts
  were broken (and I fixed them, too))).

Change-Id: Ibcac069940d118a88f783314f5b4595dce6641d5
2014-02-27 15:22:37 +01:00

50 lines
1.6 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 (
"github.com/prometheus/prometheus/storage/raw"
"github.com/prometheus/prometheus/utility"
)
const (
statsKey = "leveldb.stats"
sstablesKey = "leveldb.sstables"
)
// State returns the DatabaseState. It implements the raw.Database interface and
// sets the following Supplemental entries:
// "Low Level": leveldb property value for "leveldb.stats"
// "SSTable": leveldb property value for "leveldb.sstables"
// "Errors": only set if an error has occurred determining the size
func (l *LevelDBPersistence) State() *raw.DatabaseState {
databaseState := &raw.DatabaseState{
Location: l.path,
Name: l.name,
Purpose: l.purpose,
Supplemental: map[string]string{},
}
if size, err := l.Size(); err != nil {
databaseState.Supplemental["Errors"] = err.Error()
} else {
databaseState.Size = utility.ByteSize(size)
}
databaseState.Supplemental["Low Level"] = l.storage.PropertyValue(statsKey)
databaseState.Supplemental["SSTable"] = l.storage.PropertyValue(sstablesKey)
return databaseState
}