mirror of
https://github.com/prometheus/statsd_exporter.git
synced 2024-05-18 17:18:11 +00:00
88 lines
2.4 KiB
Go
88 lines
2.4 KiB
Go
// Copyright 2013 The Prometheus Authors
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package event
|
|
|
|
import (
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/prometheus/statsd_exporter/pkg/clock"
|
|
)
|
|
|
|
var eventsFlushed = prometheus.NewCounter(
|
|
prometheus.CounterOpts{
|
|
Name: "statsd_exporter_event_queue_flushed_total",
|
|
Help: "Number of times events were flushed to exporter",
|
|
},
|
|
)
|
|
|
|
func TestEventThresholdFlush(t *testing.T) {
|
|
c := make(chan Events, 100)
|
|
// We're not going to flush during this test, so the duration doesn't matter.
|
|
eq := NewEventQueue(c, 5, time.Second, eventsFlushed)
|
|
e := make(Events, 13)
|
|
go func() {
|
|
eq.Queue(e)
|
|
}()
|
|
|
|
batch := <-c
|
|
if len(batch) != 5 {
|
|
t.Fatalf("Expected event batch to be 5 elements, but got %v", len(batch))
|
|
}
|
|
batch = <-c
|
|
if len(batch) != 5 {
|
|
t.Fatalf("Expected event batch to be 5 elements, but got %v", len(batch))
|
|
}
|
|
batch = <-c
|
|
if len(batch) != 3 {
|
|
t.Fatalf("Expected event batch to be 3 elements, but got %v", len(batch))
|
|
}
|
|
}
|
|
|
|
func TestEventIntervalFlush(t *testing.T) {
|
|
// Mock a time.NewTicker
|
|
tickerCh := make(chan time.Time)
|
|
clock.ClockInstance = &clock.Clock{
|
|
TickerCh: tickerCh,
|
|
}
|
|
clock.ClockInstance.Instant = time.Unix(0, 0)
|
|
|
|
c := make(chan Events, 100)
|
|
eq := NewEventQueue(c, 1000, time.Second*1000, eventsFlushed)
|
|
e := make(Events, 10)
|
|
eq.Queue(e)
|
|
|
|
if eq.Len() != 10 {
|
|
t.Fatal("Expected 10 events to be queued, but got", eq.Len())
|
|
}
|
|
|
|
if len(eq.C) != 0 {
|
|
t.Fatal("Expected 0 events in the event channel, but got", len(eq.C))
|
|
}
|
|
|
|
// Tick time forward to trigger a flush
|
|
clock.ClockInstance.Instant = time.Unix(10000, 0)
|
|
clock.ClockInstance.TickerCh <- time.Unix(10000, 0)
|
|
|
|
events := <-eq.C
|
|
if eq.Len() != 0 {
|
|
t.Fatal("Expected 0 events to be queued, but got", eq.Len())
|
|
}
|
|
|
|
if len(events) != 10 {
|
|
t.Fatal("Expected 10 events in the event channel, but got", len(events))
|
|
}
|
|
}
|