prysm-pulse/beacon-chain/sync/rate_limiter_test.go

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package sync
import (
"context"
"sync"
"testing"
"time"
"github.com/libp2p/go-libp2p-core/network"
"github.com/libp2p/go-libp2p-core/protocol"
"github.com/prysmaticlabs/prysm/beacon-chain/p2p"
mockp2p "github.com/prysmaticlabs/prysm/beacon-chain/p2p/testing"
"github.com/prysmaticlabs/prysm/shared/testutil"
"github.com/prysmaticlabs/prysm/shared/testutil/assert"
"github.com/prysmaticlabs/prysm/shared/testutil/require"
)
func TestNewRateLimiter(t *testing.T) {
rlimiter := newRateLimiter(mockp2p.NewTestP2P(t))
assert.Equal(t, len(rlimiter.limiterMap), 6, "correct number of topics not registered")
}
func TestNewRateLimiter_FreeCorrectly(t *testing.T) {
rlimiter := newRateLimiter(mockp2p.NewTestP2P(t))
rlimiter.free()
assert.Equal(t, len(rlimiter.limiterMap), 0, "rate limiter not freed correctly")
}
func TestRateLimiter_ExceedCapacity(t *testing.T) {
p1 := mockp2p.NewTestP2P(t)
p2 := mockp2p.NewTestP2P(t)
p1.Connect(p2)
rlimiter := newRateLimiter(p1)
// BlockByRange
topic := p2p.RPCBlocksByRangeTopic + p1.Encoding().ProtocolSuffix()
wg := sync.WaitGroup{}
p2.BHost.SetStreamHandler(protocol.ID(topic), func(stream network.Stream) {
defer wg.Done()
code, errMsg, err := readStatusCodeNoDeadline(stream, p2.Encoding())
require.NoError(t, err, "could not read incoming stream")
assert.Equal(t, responseCodeInvalidRequest, code, "not equal response codes")
assert.Equal(t, rateLimitedError, errMsg, "not equal errors")
})
wg.Add(1)
stream, err := p1.BHost.NewStream(context.Background(), p2.PeerID(), protocol.ID(topic))
require.NoError(t, err, "could not create stream")
err = rlimiter.validateRequest(stream, 64)
require.NoError(t, err, "could not validate incoming request")
// Attempt to create an error, rate limit and lead to disconnect
err = rlimiter.validateRequest(stream, 1000)
require.NotNil(t, err, "could not get error from leaky bucket")
require.NoError(t, stream.Close(), "could not close stream")
if testutil.WaitTimeout(&wg, 1*time.Second) {
t.Fatal("Did not receive stream within 1 sec")
}
}