sftpgo-mirror/common/ratelimiter_test.go
2021-04-18 12:31:06 +02:00

135 lines
3.5 KiB
Go

package common
import (
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestRateLimiterConfig(t *testing.T) {
config := RateLimiterConfig{}
err := config.validate()
require.Error(t, err)
config.Burst = 1
config.Period = 10
err = config.validate()
require.Error(t, err)
config.Period = 1000
config.Type = 100
err = config.validate()
require.Error(t, err)
config.Type = int(rateLimiterTypeSource)
config.EntriesSoftLimit = 0
err = config.validate()
require.Error(t, err)
config.EntriesSoftLimit = 150
config.EntriesHardLimit = 0
err = config.validate()
require.Error(t, err)
config.EntriesHardLimit = 200
config.Protocols = []string{"unsupported protocol"}
err = config.validate()
require.Error(t, err)
config.Protocols = rateLimiterProtocolValues
err = config.validate()
require.NoError(t, err)
limiter := config.getLimiter()
require.Equal(t, 500*time.Millisecond, limiter.maxDelay)
require.Nil(t, limiter.globalBucket)
config.Type = int(rateLimiterTypeGlobal)
config.Average = 1
config.Period = 10000
limiter = config.getLimiter()
require.Equal(t, 5*time.Second, limiter.maxDelay)
require.NotNil(t, limiter.globalBucket)
config.Period = 100000
limiter = config.getLimiter()
require.Equal(t, 10*time.Second, limiter.maxDelay)
config.Period = 500
config.Average = 1
limiter = config.getLimiter()
require.Equal(t, 250*time.Millisecond, limiter.maxDelay)
}
func TestRateLimiter(t *testing.T) {
config := RateLimiterConfig{
Average: 1,
Period: 1000,
Burst: 1,
Type: int(rateLimiterTypeGlobal),
Protocols: rateLimiterProtocolValues,
}
limiter := config.getLimiter()
err := limiter.Wait("")
require.NoError(t, err)
err = limiter.Wait("")
require.Error(t, err)
config.Type = int(rateLimiterTypeSource)
config.GenerateDefenderEvents = true
config.EntriesSoftLimit = 5
config.EntriesHardLimit = 10
limiter = config.getLimiter()
source := "192.168.1.2"
err = limiter.Wait(source)
require.NoError(t, err)
err = limiter.Wait(source)
require.Error(t, err)
// a different source should work
err = limiter.Wait(source + "1")
require.NoError(t, err)
config.Burst = 0
limiter = config.getLimiter()
err = limiter.Wait(source)
require.ErrorIs(t, err, errReserve)
}
func TestLimiterCleanup(t *testing.T) {
config := RateLimiterConfig{
Average: 100,
Period: 1000,
Burst: 1,
Type: int(rateLimiterTypeSource),
Protocols: rateLimiterProtocolValues,
EntriesSoftLimit: 1,
EntriesHardLimit: 3,
}
limiter := config.getLimiter()
source1 := "10.8.0.1"
source2 := "10.8.0.2"
source3 := "10.8.0.3"
source4 := "10.8.0.4"
err := limiter.Wait(source1)
assert.NoError(t, err)
time.Sleep(20 * time.Millisecond)
err = limiter.Wait(source2)
assert.NoError(t, err)
time.Sleep(20 * time.Millisecond)
assert.Len(t, limiter.buckets.buckets, 2)
_, ok := limiter.buckets.buckets[source1]
assert.True(t, ok)
_, ok = limiter.buckets.buckets[source2]
assert.True(t, ok)
err = limiter.Wait(source3)
assert.NoError(t, err)
assert.Len(t, limiter.buckets.buckets, 3)
_, ok = limiter.buckets.buckets[source1]
assert.True(t, ok)
_, ok = limiter.buckets.buckets[source2]
assert.True(t, ok)
_, ok = limiter.buckets.buckets[source3]
assert.True(t, ok)
time.Sleep(20 * time.Millisecond)
err = limiter.Wait(source4)
assert.NoError(t, err)
assert.Len(t, limiter.buckets.buckets, 2)
_, ok = limiter.buckets.buckets[source3]
assert.True(t, ok)
_, ok = limiter.buckets.buckets[source4]
assert.True(t, ok)
}