mirror of
https://gitee.com/milvus-io/milvus.git
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141 lines
3.9 KiB
Go
141 lines
3.9 KiB
Go
// Licensed to the LF AI & Data foundation under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package ratelimitutil
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import (
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"math"
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"math/rand"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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)
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func TestRateCollector(t *testing.T) {
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t.Run("test add and get", func(t *testing.T) {
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var (
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ts0 = time.Now()
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ts11 = ts0.Add(time.Duration(1.0 * float64(time.Second)))
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ts12 = ts0.Add(time.Duration(1.9 * float64(time.Second)))
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ts31 = ts0.Add(time.Duration(3.1 * float64(time.Second)))
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ts41 = ts0.Add(time.Duration(4.0 * float64(time.Second)))
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ts100 = ts0.Add(time.Duration(100.0 * float64(time.Second)))
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)
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rc, err := newRateCollector(DefaultWindow, DefaultGranularity, ts0)
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assert.NoError(t, err)
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label := "mock_label"
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rc.Register(label)
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defer rc.Deregister(label)
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rc.add(label, 10, ts11)
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rc.add(label, 20, ts12)
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v, err := rc.rate(label, 2*time.Second, ts12)
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assert.NoError(t, err)
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assert.Equal(t, float64(15), v)
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rc.add(label, 20, ts31)
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v, err = rc.rate(label, 2*time.Second, ts31)
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assert.NoError(t, err)
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assert.Equal(t, float64(10), v)
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v, err = rc.rate(label, 4*time.Second, ts31)
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assert.NoError(t, err)
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assert.Equal(t, 50.0/4.0, v)
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rc.add(label, 20, ts41)
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v, err = rc.rate(label, 1*time.Second, ts31)
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assert.NoError(t, err)
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assert.Equal(t, float64(20), v)
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v, err = rc.rate(label, 2*time.Second, ts31)
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assert.NoError(t, err)
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assert.Equal(t, float64(20), v)
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v, err = rc.rate(label, 2*time.Second, ts100)
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assert.NoError(t, err)
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assert.Equal(t, float64(0), v)
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})
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t.Run("test min max", func(t *testing.T) {
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var (
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ts0 = time.Now()
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ts11 = ts0.Add(time.Duration(1.0 * float64(time.Second)))
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ts12 = ts0.Add(time.Duration(1.9 * float64(time.Second)))
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ts31 = ts0.Add(time.Duration(3.1 * float64(time.Second)))
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)
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rc, err := newRateCollector(DefaultWindow, DefaultGranularity, ts0)
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assert.NoError(t, err)
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label := "mock_label"
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rc.Register(label)
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defer rc.Deregister(label)
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rc.add(label, 10, ts11)
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rc.add(label, 20, ts12)
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v, err := rc.min(label, ts31)
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assert.NoError(t, err)
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assert.Equal(t, float64(0), v)
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v, err = rc.max(label, ts31)
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assert.NoError(t, err)
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assert.Equal(t, float64(30), v)
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rc.print()
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})
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t.Run("long running", func(t *testing.T) {
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const testPeriod = 10
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tt := makeTestTime(t)
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start := tt.now()
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end := start.Add(testPeriod * time.Second)
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rc, err := newRateCollector(DefaultWindow, DefaultGranularity, start)
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assert.NoError(t, err)
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label := "mock_label"
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rc.Register(label)
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defer rc.Deregister(label)
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slots := make(map[int]float64)
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for tt.now().Before(end) {
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increase := rand.Float64()
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rc.add(label, increase, tt.now())
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slotIndex := int(tt.now().Sub(start) / time.Second)
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slots[slotIndex] += increase
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tt.advance(2 * time.Millisecond)
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}
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getSlotRate := func(duration int) float64 {
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total := 0.0
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for i := testPeriod - 1; i >= testPeriod-duration; i-- {
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total += slots[i]
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}
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return total / float64(duration)
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}
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for i := 1; i <= testPeriod-1; i++ {
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want := getSlotRate(i)
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actual, err := rc.rate(label, time.Duration(i)*time.Second, tt.now().Add(-time.Second/5))
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assert.NoError(t, err)
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assert.True(t, math.Abs(want-actual) < 0.000001)
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}
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})
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}
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