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add mutex for DiscoveredLabels 

Signed-off-by: Krasi Georgiev <krasi.root@gmail.com>
pull/4066/head
Krasi Georgiev 2018-04-10 00:08:26 +03:00
parent e65fc8591a
commit dc29dd1c6f
1 changed files with 4 additions and 0 deletions
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4
scrape/target.go
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@ -110,6 +110,8 @@ func (t *Target) Labels() labels.Labels {
// DiscoveredLabels returns a copy of the target's labels before any processing.
func (t *Target) DiscoveredLabels() labels.Labels {
t.mtx.Lock()
defer t.mtx.Unlock()
lset := make(labels.Labels, len(t.discoveredLabels))
copy(lset, t.discoveredLabels)
return lset
@ -117,6 +119,8 @@ func (t *Target) DiscoveredLabels() labels.Labels {
// SetDiscoveredLabels sets new DiscoveredLabels
func (t *Target) SetDiscoveredLabels(l labels.Labels) {
t.mtx.Lock()
defer t.mtx.Unlock()
t.discoveredLabels = l
}