TheArchive/tailscale
1
0
Fork 0
mirror of https://github.com/tailscale/tailscale.git synced 2024-11-29 04:55:31 +00:00
Code Issues Packages Projects Releases Wiki Activity

net/portmapper: avoid alloc in getUPnPErrorsMetric

Browse Source 
Updates #cleanup

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: Iea558024c038face24cc46584421998d10f13a66
This commit is contained in:
Andrew Dunham 2023-10-25 20:29:08 -04:00
parent 237b4b5a2a
commit ef596aed9b
1 changed files with 12 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
net/portmapper/portmapper.go
View File

@ -1028,19 +1028,21 @@ func (c *Client) Probe(ctx context.Context) (res ProbeResult, err error) {
// UPnP error metric that's keyed by code; lazily registered on first read
var (
metricUPnPErrorsByCode syncs.Map[string, *clientmetric.Metric]
metricUPnPErrorsByCode syncs.Map[int, *clientmetric.Metric]
)
func getUPnPErrorsMetric(code int) *clientmetric.Metric {
// Metric names cannot contain a hyphen, so we handle negative numbers
// by prefixing the name with a "minus_".
var codeStr string
if code < 0 {
codeStr = fmt.Sprintf("portmap_upnp_errors_with_code_minus_%d", -code)
} else {
codeStr = fmt.Sprintf("portmap_upnp_errors_with_code_%d", code)
}
mm, _ := metricUPnPErrorsByCode.LoadOrInit(code, func() *clientmetric.Metric {
// Metric names cannot contain a hyphen, so we handle negative
// numbers by prefixing the name with a "minus_".
var codeStr string
if code < 0 {
codeStr = fmt.Sprintf("portmap_upnp_errors_with_code_minus_%d", -code)
} else {
codeStr = fmt.Sprintf("portmap_upnp_errors_with_code_%d", code)
}
mm, _ := metricUPnPErrorsByCode.LoadOrInit(codeStr, func() *clientmetric.Metric { return clientmetric.NewCounter(codeStr) })
return clientmetric.NewCounter(codeStr)
})
return mm
}