mirror of
https://github.com/ceph/ceph-csi.git
synced 2025-03-09 08:59:30 +00:00
f87d06ed85
Several packages are only used while running the e2e suite. These packages are less important to update, as the they can not influence the final executable that is part of the Ceph-CSI container-image. By moving these dependencies out of the main Ceph-CSI go.mod, it is easier to identify if a reported CVE affects Ceph-CSI, or only the testing (like most of the Kubernetes CVEs). Signed-off-by: Niels de Vos <ndevos@ibm.com>
86 lines
2.2 KiB
Go
86 lines
2.2 KiB
Go
// Copyright 2017 The Prometheus Authors
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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 procfs
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import (
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"bufio"
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"fmt"
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"io"
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"os"
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"strconv"
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"strings"
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)
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// A BuddyInfo is the details parsed from /proc/buddyinfo.
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// The data is comprised of an array of free fragments of each size.
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// The sizes are 2^n*PAGE_SIZE, where n is the array index.
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type BuddyInfo struct {
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Node string
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Zone string
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Sizes []float64
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}
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// BuddyInfo reads the buddyinfo statistics from the specified `proc` filesystem.
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func (fs FS) BuddyInfo() ([]BuddyInfo, error) {
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file, err := os.Open(fs.proc.Path("buddyinfo"))
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if err != nil {
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return nil, err
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}
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defer file.Close()
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return parseBuddyInfo(file)
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}
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func parseBuddyInfo(r io.Reader) ([]BuddyInfo, error) {
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var (
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buddyInfo = []BuddyInfo{}
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scanner = bufio.NewScanner(r)
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bucketCount = -1
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)
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for scanner.Scan() {
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var err error
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line := scanner.Text()
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parts := strings.Fields(line)
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if len(parts) < 4 {
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return nil, fmt.Errorf("%w: Invalid number of fields, found: %v", ErrFileParse, parts)
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}
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node := strings.TrimSuffix(parts[1], ",")
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zone := strings.TrimSuffix(parts[3], ",")
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arraySize := len(parts[4:])
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if bucketCount == -1 {
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bucketCount = arraySize
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} else {
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if bucketCount != arraySize {
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return nil, fmt.Errorf("%w: mismatch in number of buddyinfo buckets, previous count %d, new count %d", ErrFileParse, bucketCount, arraySize)
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}
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}
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sizes := make([]float64, arraySize)
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for i := 0; i < arraySize; i++ {
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sizes[i], err = strconv.ParseFloat(parts[i+4], 64)
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if err != nil {
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return nil, fmt.Errorf("%w: Invalid valid in buddyinfo: %f: %w", ErrFileParse, sizes[i], err)
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}
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}
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buddyInfo = append(buddyInfo, BuddyInfo{node, zone, sizes})
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}
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return buddyInfo, scanner.Err()
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}
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