diff options
author | Kevin Lyda <kevin@ie.suberic.net> | 2017-02-12 14:38:12 +0000 |
---|---|---|
committer | Niall Sheridan <nsheridan@gmail.com> | 2017-02-12 14:38:12 +0000 |
commit | ed8bc523fd0d1a66acf3fa449c453508035efdfc (patch) | |
tree | c05849546e1dd9d771dcc4c4ff52056d249a95fb /vendor/github.com/prometheus/procfs/stat.go | |
parent | 9c344a0a95c44ef9cebade7b8a65ac160d9eb900 (diff) |
Initial pass at prometheus support. (#56)
Diffstat (limited to 'vendor/github.com/prometheus/procfs/stat.go')
-rw-r--r-- | vendor/github.com/prometheus/procfs/stat.go | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/vendor/github.com/prometheus/procfs/stat.go b/vendor/github.com/prometheus/procfs/stat.go new file mode 100644 index 0000000..1ca217e --- /dev/null +++ b/vendor/github.com/prometheus/procfs/stat.go @@ -0,0 +1,56 @@ +package procfs + +import ( + "bufio" + "fmt" + "os" + "strconv" + "strings" +) + +// Stat represents kernel/system statistics. +type Stat struct { + // Boot time in seconds since the Epoch. + BootTime int64 +} + +// NewStat returns kernel/system statistics read from /proc/stat. +func NewStat() (Stat, error) { + fs, err := NewFS(DefaultMountPoint) + if err != nil { + return Stat{}, err + } + + return fs.NewStat() +} + +// NewStat returns an information about current kernel/system statistics. +func (fs FS) NewStat() (Stat, error) { + f, err := os.Open(fs.Path("stat")) + if err != nil { + return Stat{}, err + } + defer f.Close() + + s := bufio.NewScanner(f) + for s.Scan() { + line := s.Text() + if !strings.HasPrefix(line, "btime") { + continue + } + fields := strings.Fields(line) + if len(fields) != 2 { + return Stat{}, fmt.Errorf("couldn't parse %s line %s", f.Name(), line) + } + i, err := strconv.ParseInt(fields[1], 10, 32) + if err != nil { + return Stat{}, fmt.Errorf("couldn't parse %s: %s", fields[1], err) + } + return Stat{BootTime: i}, nil + } + if err := s.Err(); err != nil { + return Stat{}, fmt.Errorf("couldn't parse %s: %s", f.Name(), err) + } + + return Stat{}, fmt.Errorf("couldn't parse %s, missing btime", f.Name()) +} |