mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-01 14:47:38 +00:00
c06e7a142c
Cache sanitized label names and return them next time. This reduces the number of allocations and speeds up the SanitizeLabelName() function for common case when the number of unique label names is smaller than 100k
45 lines
889 B
Go
45 lines
889 B
Go
package discoveryutils
|
|
|
|
import (
|
|
"fmt"
|
|
"testing"
|
|
"time"
|
|
)
|
|
|
|
func TestInternStringSerial(t *testing.T) {
|
|
if err := testInternString(t); err != nil {
|
|
t.Fatalf("unexpected error: %s", err)
|
|
}
|
|
}
|
|
|
|
func TestInternStringConcurrent(t *testing.T) {
|
|
concurrency := 5
|
|
resultCh := make(chan error, concurrency)
|
|
for i := 0; i < concurrency; i++ {
|
|
go func() {
|
|
resultCh <- testInternString(t)
|
|
}()
|
|
}
|
|
timer := time.NewTimer(5 * time.Second)
|
|
for i := 0; i < concurrency; i++ {
|
|
select {
|
|
case err := <-resultCh:
|
|
if err != nil {
|
|
t.Fatalf("unexpected error: %s", err)
|
|
}
|
|
case <-timer.C:
|
|
t.Fatalf("timeout")
|
|
}
|
|
}
|
|
}
|
|
|
|
func testInternString(t *testing.T) error {
|
|
for i := 0; i < 1000; i++ {
|
|
s := fmt.Sprintf("foo_%d", i)
|
|
s1 := InternString(s)
|
|
if s != s1 {
|
|
return fmt.Errorf("unexpected string returned from internString; got %q; want %q", s1, s)
|
|
}
|
|
}
|
|
return nil
|
|
}
|