Fix rollover bug in mountstats collector (#1364)

* Update procfs vendor to pull in github.com/prometheus/procfs/pull/165
* Update mountstats collector to use new types.
* Rollover counter automatically to avoid float64 accuracy issues.
* Update e2e test.

Signed-off-by: Ben Kochie <superq@gmail.com>
This commit is contained in:
Ben Kochie 2019-05-31 18:30:37 +02:00 committed by GitHub
commit 8146998945
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
21 changed files with 771 additions and 76 deletions

View file

@ -75,7 +75,7 @@ func newNetDev(file string) (NetDev, error) {
}
defer f.Close()
nd := NetDev{}
netDev := NetDev{}
s := bufio.NewScanner(f)
for n := 0; s.Scan(); n++ {
// Skip the 2 header lines.
@ -83,20 +83,20 @@ func newNetDev(file string) (NetDev, error) {
continue
}
line, err := nd.parseLine(s.Text())
line, err := netDev.parseLine(s.Text())
if err != nil {
return nd, err
return netDev, err
}
nd[line.Name] = *line
netDev[line.Name] = *line
}
return nd, s.Err()
return netDev, s.Err()
}
// parseLine parses a single line from the /proc/net/dev file. Header lines
// must be filtered prior to calling this method.
func (nd NetDev) parseLine(rawLine string) (*NetDevLine, error) {
func (netDev NetDev) parseLine(rawLine string) (*NetDevLine, error) {
parts := strings.SplitN(rawLine, ":", 2)
if len(parts) != 2 {
return nil, errors.New("invalid net/dev line, missing colon")
@ -185,11 +185,11 @@ func (nd NetDev) parseLine(rawLine string) (*NetDevLine, error) {
// Total aggregates the values across interfaces and returns a new NetDevLine.
// The Name field will be a sorted comma separated list of interface names.
func (nd NetDev) Total() NetDevLine {
func (netDev NetDev) Total() NetDevLine {
total := NetDevLine{}
names := make([]string, 0, len(nd))
for _, ifc := range nd {
names := make([]string, 0, len(netDev))
for _, ifc := range netDev {
names = append(names, ifc.Name)
total.RxBytes += ifc.RxBytes
total.RxPackets += ifc.RxPackets