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https://github.com/prometheus/prometheus.git
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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.
56 lines
1.3 KiB
Go
56 lines
1.3 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 utility
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import (
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"fmt"
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)
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// The canonical example: http://golang.org/doc/progs/eff_bytesize.go.
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type ByteSize float64
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const (
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_ = iota // ignore first value by assigning to blank identifier
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KB ByteSize = 1 << (10 * iota)
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MB
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GB
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TB
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PB
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EB
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ZB
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YB
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)
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func (b ByteSize) String() string {
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switch {
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case b >= YB:
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return fmt.Sprintf("%.2fYB", b/YB)
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case b >= ZB:
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return fmt.Sprintf("%.2fZB", b/ZB)
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case b >= EB:
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return fmt.Sprintf("%.2fEB", b/EB)
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case b >= PB:
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return fmt.Sprintf("%.2fPB", b/PB)
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case b >= TB:
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return fmt.Sprintf("%.2fTB", b/TB)
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case b >= GB:
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return fmt.Sprintf("%.2fGB", b/GB)
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case b >= MB:
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return fmt.Sprintf("%.2fMB", b/MB)
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case b >= KB:
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return fmt.Sprintf("%.2fKB", b/KB)
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}
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return fmt.Sprintf("%.2fB", b)
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}
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