prysm-pulse/beacon-chain/sync/rpc_send_request_test.go
Victor Farazdagi 7acd73e1fe
Refactor p2p requests: extract BeaconBlocksByRangeRequest and BeaconBlocksByRootRequest (#7718)
* extract SendBeaconBlocksByRangeRequest

* adds extra processing

* extract SendBeaconBlocksByRootRequest

* extract into rpc_send_request.go

* add tests

* more tests

* gazelle

* remove redundant import

* for consistency

* for consistency

Co-authored-by: prylabs-bulldozer[bot] <58059840+prylabs-bulldozer[bot]@users.noreply.github.com>
2020-11-04 20:09:19 +00:00

383 lines
12 KiB
Go

package sync
import (
"context"
"errors"
"fmt"
"io"
"testing"
"github.com/libp2p/go-libp2p-core/mux"
"github.com/libp2p/go-libp2p-core/network"
eth "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
"github.com/prysmaticlabs/prysm/beacon-chain/p2p"
p2ptest "github.com/prysmaticlabs/prysm/beacon-chain/p2p/testing"
p2pTypes "github.com/prysmaticlabs/prysm/beacon-chain/p2p/types"
pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
"github.com/prysmaticlabs/prysm/shared/params"
"github.com/prysmaticlabs/prysm/shared/testutil"
"github.com/prysmaticlabs/prysm/shared/testutil/assert"
"github.com/prysmaticlabs/prysm/shared/testutil/require"
)
func TestSendRequest_SendBeaconBlocksByRangeRequest(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
pcl := fmt.Sprintf("%s/ssz_snappy", p2p.RPCBlocksByRangeTopic)
t.Run("stream error", func(t *testing.T) {
p1 := p2ptest.NewTestP2P(t)
// Bogus peer doesn't support a given protocol, so stream error is expected.
bogusPeer := p2ptest.NewTestP2P(t)
p1.Connect(bogusPeer)
req := &pb.BeaconBlocksByRangeRequest{}
_, err := SendBeaconBlocksByRangeRequest(ctx, p1, bogusPeer.PeerID(), req, nil)
assert.ErrorContains(t, "protocol not supported", err)
})
knownBlocks := make([]*eth.SignedBeaconBlock, 0)
genesisBlk := testutil.NewBeaconBlock()
genesisBlkRoot, err := genesisBlk.Block.HashTreeRoot()
require.NoError(t, err)
parentRoot := genesisBlkRoot
for i := 0; i < 255; i++ {
blk := testutil.NewBeaconBlock()
blk.Block.Slot = uint64(i)
blk.Block.ParentRoot = parentRoot[:]
knownBlocks = append(knownBlocks, blk)
parentRoot, err = blk.Block.HashTreeRoot()
require.NoError(t, err)
}
knownBlocksProvider := func(p2pProvider p2p.P2P, processor BeaconBlockProcessor) func(stream network.Stream) {
return func(stream network.Stream) {
defer func() {
assert.NoError(t, stream.Close())
}()
req := &pb.BeaconBlocksByRangeRequest{}
assert.NoError(t, p2pProvider.Encoding().DecodeWithMaxLength(stream, req))
for i := req.StartSlot; i < req.StartSlot+req.Count*req.Step; i += req.Step {
if processor != nil {
if processorErr := processor(knownBlocks[i]); processorErr != nil {
if errors.Is(processorErr, io.EOF) {
// Close stream, w/o any errors written.
return
}
_, err := stream.Write([]byte{0x01})
assert.NoError(t, err)
msg := p2pTypes.ErrorMessage(processorErr.Error())
_, err = p2pProvider.Encoding().EncodeWithMaxLength(stream, &msg)
assert.NoError(t, err)
return
}
}
if i >= uint64(len(knownBlocks)) {
break
}
err = WriteChunk(stream, p2pProvider.Encoding(), knownBlocks[i])
if err != nil && err.Error() != mux.ErrReset.Error() {
require.NoError(t, err)
}
}
}
}
t.Run("no block processor", func(t *testing.T) {
p1 := p2ptest.NewTestP2P(t)
p2 := p2ptest.NewTestP2P(t)
p1.Connect(p2)
p2.SetStreamHandler(pcl, knownBlocksProvider(p2, nil))
req := &pb.BeaconBlocksByRangeRequest{
StartSlot: 20,
Count: 128,
Step: 1,
}
blocks, err := SendBeaconBlocksByRangeRequest(ctx, p1, p2.PeerID(), req, nil)
assert.NoError(t, err)
assert.Equal(t, 128, len(blocks))
})
t.Run("has block processor - no errors", func(t *testing.T) {
p1 := p2ptest.NewTestP2P(t)
p2 := p2ptest.NewTestP2P(t)
p1.Connect(p2)
p2.SetStreamHandler(pcl, knownBlocksProvider(p2, nil))
// No error from block processor.
req := &pb.BeaconBlocksByRangeRequest{
StartSlot: 20,
Count: 128,
Step: 1,
}
blocksFromProcessor := make([]*eth.SignedBeaconBlock, 0)
blocks, err := SendBeaconBlocksByRangeRequest(ctx, p1, p2.PeerID(), req, func(block *eth.SignedBeaconBlock) error {
blocksFromProcessor = append(blocksFromProcessor, block)
return nil
})
assert.NoError(t, err)
assert.Equal(t, 128, len(blocks))
assert.DeepEqual(t, blocks, blocksFromProcessor)
})
t.Run("has block processor - throw error", func(t *testing.T) {
p1 := p2ptest.NewTestP2P(t)
p2 := p2ptest.NewTestP2P(t)
p1.Connect(p2)
p2.SetStreamHandler(pcl, knownBlocksProvider(p2, nil))
// Send error from block processor.
req := &pb.BeaconBlocksByRangeRequest{
StartSlot: 20,
Count: 128,
Step: 1,
}
errFromProcessor := errors.New("processor error")
_, err := SendBeaconBlocksByRangeRequest(ctx, p1, p2.PeerID(), req, func(block *eth.SignedBeaconBlock) error {
return errFromProcessor
})
assert.ErrorContains(t, errFromProcessor.Error(), err)
})
t.Run("max request blocks", func(t *testing.T) {
p1 := p2ptest.NewTestP2P(t)
p2 := p2ptest.NewTestP2P(t)
p1.Connect(p2)
p2.SetStreamHandler(pcl, knownBlocksProvider(p2, nil))
// No cap on max roots.
req := &pb.BeaconBlocksByRangeRequest{
StartSlot: 20,
Count: 128,
Step: 1,
}
blocks, err := SendBeaconBlocksByRangeRequest(ctx, p1, p2.PeerID(), req, nil)
assert.NoError(t, err)
assert.Equal(t, 128, len(blocks))
// Cap max returned roots.
cfg := params.BeaconNetworkConfig().Copy()
maxRequestBlocks := cfg.MaxRequestBlocks
defer func() {
cfg.MaxRequestBlocks = maxRequestBlocks
params.OverrideBeaconNetworkConfig(cfg)
}()
blocks, err = SendBeaconBlocksByRangeRequest(ctx, p1, p2.PeerID(), req, func(block *eth.SignedBeaconBlock) error {
// Since ssz checks the boundaries, and doesn't normally allow to send requests bigger than
// the max request size, we are updating max request size dynamically. Even when updated dynamically,
// no more than max request size of blocks is expected on return.
cfg.MaxRequestBlocks = 3
params.OverrideBeaconNetworkConfig(cfg)
return nil
})
assert.ErrorContains(t, ErrInvalidFetchedData.Error(), err)
assert.Equal(t, 0, len(blocks))
})
t.Run("process custom error", func(t *testing.T) {
p1 := p2ptest.NewTestP2P(t)
p2 := p2ptest.NewTestP2P(t)
p1.Connect(p2)
blocksProcessed := 0
expectedErr := errors.New("some error")
p2.SetStreamHandler(pcl, knownBlocksProvider(p2, func(block *eth.SignedBeaconBlock) error {
if blocksProcessed > 2 {
return expectedErr
}
blocksProcessed++
return nil
}))
req := &pb.BeaconBlocksByRangeRequest{
StartSlot: 20,
Count: 128,
Step: 1,
}
blocks, err := SendBeaconBlocksByRangeRequest(ctx, p1, p2.PeerID(), req, nil)
assert.ErrorContains(t, expectedErr.Error(), err)
assert.Equal(t, 0, len(blocks))
})
}
func TestSendRequest_SendBeaconBlocksByRootRequest(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
pcl := fmt.Sprintf("%s/ssz_snappy", p2p.RPCBlocksByRootTopic)
knownBlocks := make(map[[32]byte]*eth.SignedBeaconBlock)
knownRoots := make([][32]byte, 0)
for i := 0; i < 5; i++ {
blk := testutil.NewBeaconBlock()
blkRoot, err := blk.Block.HashTreeRoot()
require.NoError(t, err)
knownRoots = append(knownRoots, blkRoot)
knownBlocks[knownRoots[len(knownRoots)-1]] = blk
}
t.Run("stream error", func(t *testing.T) {
p1 := p2ptest.NewTestP2P(t)
// Bogus peer doesn't support a given protocol, so stream error is expected.
bogusPeer := p2ptest.NewTestP2P(t)
p1.Connect(bogusPeer)
req := &p2pTypes.BeaconBlockByRootsReq{}
_, err := SendBeaconBlocksByRootRequest(ctx, p1, bogusPeer.PeerID(), req, nil)
assert.ErrorContains(t, "protocol not supported", err)
})
knownBlocksProvider := func(p2pProvider p2p.P2P, processor BeaconBlockProcessor) func(stream network.Stream) {
return func(stream network.Stream) {
defer func() {
assert.NoError(t, stream.Close())
}()
req := new(p2pTypes.BeaconBlockByRootsReq)
assert.NoError(t, p2pProvider.Encoding().DecodeWithMaxLength(stream, req))
if len(*req) == 0 {
return
}
for _, root := range *req {
if blk, ok := knownBlocks[root]; ok {
if processor != nil {
if processorErr := processor(blk); processorErr != nil {
if errors.Is(processorErr, io.EOF) {
// Close stream, w/o any errors written.
return
}
_, err := stream.Write([]byte{0x01})
assert.NoError(t, err)
msg := p2pTypes.ErrorMessage(processorErr.Error())
_, err = p2pProvider.Encoding().EncodeWithMaxLength(stream, &msg)
assert.NoError(t, err)
return
}
}
_, err := stream.Write([]byte{0x00})
assert.NoError(t, err, "Failed to write to stream")
_, err = p2pProvider.Encoding().EncodeWithMaxLength(stream, blk)
assert.NoError(t, err, "Could not send response back")
}
}
}
}
t.Run("no block processor", func(t *testing.T) {
p1 := p2ptest.NewTestP2P(t)
p2 := p2ptest.NewTestP2P(t)
p1.Connect(p2)
p2.SetStreamHandler(pcl, knownBlocksProvider(p2, nil))
req := &p2pTypes.BeaconBlockByRootsReq{knownRoots[0], knownRoots[1]}
blocks, err := SendBeaconBlocksByRootRequest(ctx, p1, p2.PeerID(), req, nil)
assert.NoError(t, err)
assert.Equal(t, 2, len(blocks))
})
t.Run("has block processor - no errors", func(t *testing.T) {
p1 := p2ptest.NewTestP2P(t)
p2 := p2ptest.NewTestP2P(t)
p1.Connect(p2)
p2.SetStreamHandler(pcl, knownBlocksProvider(p2, nil))
// No error from block processor.
req := &p2pTypes.BeaconBlockByRootsReq{knownRoots[0], knownRoots[1]}
blocksFromProcessor := make([]*eth.SignedBeaconBlock, 0)
blocks, err := SendBeaconBlocksByRootRequest(ctx, p1, p2.PeerID(), req, func(block *eth.SignedBeaconBlock) error {
blocksFromProcessor = append(blocksFromProcessor, block)
return nil
})
assert.NoError(t, err)
assert.Equal(t, 2, len(blocks))
assert.DeepEqual(t, blocks, blocksFromProcessor)
})
t.Run("has block processor - throw error", func(t *testing.T) {
p1 := p2ptest.NewTestP2P(t)
p2 := p2ptest.NewTestP2P(t)
p1.Connect(p2)
p2.SetStreamHandler(pcl, knownBlocksProvider(p2, nil))
// Send error from block processor.
req := &p2pTypes.BeaconBlockByRootsReq{knownRoots[0], knownRoots[1]}
errFromProcessor := errors.New("processor error")
_, err := SendBeaconBlocksByRootRequest(ctx, p1, p2.PeerID(), req, func(block *eth.SignedBeaconBlock) error {
return errFromProcessor
})
assert.ErrorContains(t, errFromProcessor.Error(), err)
})
t.Run("max request blocks", func(t *testing.T) {
p1 := p2ptest.NewTestP2P(t)
p2 := p2ptest.NewTestP2P(t)
p1.Connect(p2)
p2.SetStreamHandler(pcl, knownBlocksProvider(p2, nil))
// No cap on max roots.
req := &p2pTypes.BeaconBlockByRootsReq{knownRoots[0], knownRoots[1], knownRoots[2], knownRoots[3]}
blocks, err := SendBeaconBlocksByRootRequest(ctx, p1, p2.PeerID(), req, nil)
assert.NoError(t, err)
assert.Equal(t, 4, len(blocks))
// Cap max returned roots.
cfg := params.BeaconNetworkConfig().Copy()
maxRequestBlocks := cfg.MaxRequestBlocks
defer func() {
cfg.MaxRequestBlocks = maxRequestBlocks
params.OverrideBeaconNetworkConfig(cfg)
}()
blocks, err = SendBeaconBlocksByRootRequest(ctx, p1, p2.PeerID(), req, func(block *eth.SignedBeaconBlock) error {
// Since ssz checks the boundaries, and doesn't normally allow to send requests bigger than
// the max request size, we are updating max request size dynamically. Even when updated dynamically,
// no more than max request size of blocks is expected on return.
cfg.MaxRequestBlocks = 3
params.OverrideBeaconNetworkConfig(cfg)
return nil
})
assert.NoError(t, err)
assert.Equal(t, 3, len(blocks))
})
t.Run("process custom error", func(t *testing.T) {
p1 := p2ptest.NewTestP2P(t)
p2 := p2ptest.NewTestP2P(t)
p1.Connect(p2)
blocksProcessed := 0
expectedErr := errors.New("some error")
p2.SetStreamHandler(pcl, knownBlocksProvider(p2, func(block *eth.SignedBeaconBlock) error {
if blocksProcessed > 2 {
return expectedErr
}
blocksProcessed++
return nil
}))
req := &p2pTypes.BeaconBlockByRootsReq{knownRoots[0], knownRoots[1], knownRoots[2], knownRoots[3]}
blocks, err := SendBeaconBlocksByRootRequest(ctx, p1, p2.PeerID(), req, nil)
assert.ErrorContains(t, expectedErr.Error(), err)
assert.Equal(t, 0, len(blocks))
})
t.Run("process io.EOF error", func(t *testing.T) {
p1 := p2ptest.NewTestP2P(t)
p2 := p2ptest.NewTestP2P(t)
p1.Connect(p2)
blocksProcessed := 0
expectedErr := io.EOF
p2.SetStreamHandler(pcl, knownBlocksProvider(p2, func(block *eth.SignedBeaconBlock) error {
if blocksProcessed > 2 {
return expectedErr
}
blocksProcessed++
return nil
}))
req := &p2pTypes.BeaconBlockByRootsReq{knownRoots[0], knownRoots[1], knownRoots[2], knownRoots[3]}
blocks, err := SendBeaconBlocksByRootRequest(ctx, p1, p2.PeerID(), req, nil)
assert.NoError(t, err)
assert.Equal(t, 3, len(blocks))
})
}