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| author | SandroCasagrande <SandroCasagrande@users.noreply.github.com> | 2022-05-13 22:42:01 +0000 |
|---|---|---|
| committer | Sandro Casagrande <sc.casagrande@gmail.com> | 2022-05-14 00:34:56 +0000 |
| commit | 5b2d5c365b41b35de0bda1b8a486740529458fc8 (patch) | |
| tree | 31862ae848be84ab302d2405365ff8d5d8288751 | |
| parent | bde8dba877fe97130faf9c8bee678b9cfc23219a (diff) | |
| download | podman-5b2d5c365b41b35de0bda1b8a486740529458fc8.tar.gz podman-5b2d5c365b41b35de0bda1b8a486740529458fc8.tar.bz2 podman-5b2d5c365b41b35de0bda1b8a486740529458fc8.zip | |
Robust whitespace split of cpu utilization line from /proc/stat
Signed-off-by: Sandro Casagrande <sc.casagrande@gmail.com>
| -rw-r--r-- | libpod/info.go | 11 | ||||
| -rw-r--r-- | libpod/info_test.go | 8 |
2 files changed, 9 insertions, 10 deletions
diff --git a/libpod/info.go b/libpod/info.go index 321680a81..bc49a6cc9 100644 --- a/libpod/info.go +++ b/libpod/info.go @@ -406,26 +406,25 @@ func getCPUUtilization() (*define.CPUUsage, error) { } defer f.Close() scanner := bufio.NewScanner(f) - // Read firt line of /proc/stat + // Read first line of /proc/stat that has entries for system ("cpu" line) for scanner.Scan() { break } // column 1 is user, column 3 is system, column 4 is idle - stats := strings.Split(scanner.Text(), " ") + stats := strings.Fields(scanner.Text()) return statToPercent(stats) } func statToPercent(stats []string) (*define.CPUUsage, error) { - // There is always an extra space between cpu and the first metric - userTotal, err := strconv.ParseFloat(stats[2], 64) + userTotal, err := strconv.ParseFloat(stats[1], 64) if err != nil { return nil, errors.Wrapf(err, "unable to parse user value %q", stats[1]) } - systemTotal, err := strconv.ParseFloat(stats[4], 64) + systemTotal, err := strconv.ParseFloat(stats[3], 64) if err != nil { return nil, errors.Wrapf(err, "unable to parse system value %q", stats[3]) } - idleTotal, err := strconv.ParseFloat(stats[5], 64) + idleTotal, err := strconv.ParseFloat(stats[4], 64) if err != nil { return nil, errors.Wrapf(err, "unable to parse idle value %q", stats[4]) } diff --git a/libpod/info_test.go b/libpod/info_test.go index 909b573c0..b0e4bf8c0 100644 --- a/libpod/info_test.go +++ b/libpod/info_test.go @@ -20,7 +20,7 @@ func Test_statToPercent(t *testing.T) { }{ { name: "GoodParse", - args: args{in0: []string{"cpu", " ", "33628064", "27537", "9696996", "1314806705", "588142", "4775073", "2789228", "0", "598711", "0"}}, + args: args{in0: []string{"cpu", "33628064", "27537", "9696996", "1314806705", "588142", "4775073", "2789228", "0", "598711", "0"}}, want: &define.CPUUsage{ UserPercent: 2.48, SystemPercent: 0.71, @@ -30,19 +30,19 @@ func Test_statToPercent(t *testing.T) { }, { name: "BadUserValue", - args: args{in0: []string{"cpu", " ", "k", "27537", "9696996", "1314806705", "588142", "4775073", "2789228", "0", "598711", "0"}}, + args: args{in0: []string{"cpu", "k", "27537", "9696996", "1314806705", "588142", "4775073", "2789228", "0", "598711", "0"}}, want: nil, wantErr: assert.Error, }, { name: "BadSystemValue", - args: args{in0: []string{"cpu", " ", "33628064", "27537", "k", "1314806705", "588142", "4775073", "2789228", "0", "598711", "0"}}, + args: args{in0: []string{"cpu", "33628064", "27537", "k", "1314806705", "588142", "4775073", "2789228", "0", "598711", "0"}}, want: nil, wantErr: assert.Error, }, { name: "BadIdleValue", - args: args{in0: []string{"cpu", " ", "33628064", "27537", "9696996", "k", "588142", "4775073", "2789228", "0", "598711", "0"}}, + args: args{in0: []string{"cpu", "33628064", "27537", "9696996", "k", "588142", "4775073", "2789228", "0", "598711", "0"}}, want: nil, wantErr: assert.Error, }, |