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scraping: re-use symbolTable for target discovery

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Call labels.NewBuilderWithSymbolTable.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
This commit is contained in:
Bryan Boreham 2023-11-23 19:02:37 +00:00
parent 9ba13de220
commit 0403d098e1
1 changed files with 4 additions and 1 deletions
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5
scrape/scrape.go
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@ -73,6 +73,8 @@ type scrapePool struct {
client *http.Client client *http.Client
loops map[uint64]loop loops map[uint64]loop
symbolTable *labels.SymbolTable
targetMtx sync.Mutex targetMtx sync.Mutex
// activeTargets and loops must always be synchronized to have the same // activeTargets and loops must always be synchronized to have the same
// set of hashes. // set of hashes.
@ -136,6 +138,7 @@ func newScrapePool(cfg *config.ScrapeConfig, app storage.Appendable, offsetSeed
client: client, client: client,
activeTargets: map[uint64]*Target{}, activeTargets: map[uint64]*Target{},
loops: map[uint64]loop{}, loops: map[uint64]loop{},
symbolTable: labels.NewSymbolTable(), // TODO: clean this out from time to time.
logger: logger, logger: logger,
metrics: metrics, metrics: metrics,
httpOpts: options.HTTPClientOptions, httpOpts: options.HTTPClientOptions,
@ -361,7 +364,7 @@ func (sp *scrapePool) Sync(tgs []*targetgroup.Group) {
sp.targetMtx.Lock() sp.targetMtx.Lock()
var all []*Target var all []*Target
var targets []*Target var targets []*Target
lb := labels.NewBuilder(labels.EmptyLabels()) lb := labels.NewBuilderWithSymbolTable(sp.symbolTable)
sp.droppedTargets = []*Target{} sp.droppedTargets = []*Target{}
sp.droppedTargetsCount = 0 sp.droppedTargetsCount = 0
for _, tg := range tgs { for _, tg := range tgs {