403 lines
13 KiB
Go
403 lines
13 KiB
Go
// Copyright 2019 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package statediff_test
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import (
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"context"
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"errors"
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"math/big"
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"math/rand"
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"sync"
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"testing"
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"time"
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"github.com/stretchr/testify/require"
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"github.com/ethereum/go-ethereum"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/rlp"
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"github.com/ethereum/go-ethereum/trie"
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statediff "github.com/cerc-io/plugeth-statediff"
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"github.com/cerc-io/plugeth-statediff/test_helpers"
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"github.com/cerc-io/plugeth-statediff/test_helpers/mocks"
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sdtypes "github.com/cerc-io/plugeth-statediff/types"
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)
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func init() {
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test_helpers.SilenceLogs()
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}
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func TestServiceLoop(t *testing.T) {
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t.Run("error in chain event loop", testErrorInChainEventLoop)
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t.Run("error in block loop", testErrorInBlockLoop)
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}
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var (
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eventsChannel = make(chan core.ChainEvent, 1)
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parentRoot1 = common.HexToHash("0x01")
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parentRoot2 = common.HexToHash("0x02")
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parentHeader1 = types.Header{Number: big.NewInt(rand.Int63()), Root: parentRoot1}
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parentHeader2 = types.Header{Number: big.NewInt(rand.Int63()), Root: parentRoot2}
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parentBlock1 = types.NewBlock(&parentHeader1, nil, nil, nil, trie.NewEmpty(nil))
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parentBlock2 = types.NewBlock(&parentHeader2, nil, nil, nil, trie.NewEmpty(nil))
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parentHash1 = parentBlock1.Hash()
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parentHash2 = parentBlock2.Hash()
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testRoot1 = common.HexToHash("0x03")
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testRoot2 = common.HexToHash("0x04")
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testRoot3 = common.HexToHash("0x04")
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header1 = types.Header{ParentHash: parentHash1, Root: testRoot1, Number: big.NewInt(1)}
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header2 = types.Header{ParentHash: parentHash2, Root: testRoot2, Number: big.NewInt(2)}
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header3 = types.Header{ParentHash: common.HexToHash("parent hash"), Root: testRoot3, Number: big.NewInt(3)}
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testBlock1 = types.NewBlock(&header1, nil, nil, nil, trie.NewEmpty(nil))
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testBlock2 = types.NewBlock(&header2, nil, nil, nil, trie.NewEmpty(nil))
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testBlock3 = types.NewBlock(&header3, nil, nil, nil, trie.NewEmpty(nil))
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receiptRoot1 = common.HexToHash("0x05")
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receiptRoot2 = common.HexToHash("0x06")
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receiptRoot3 = common.HexToHash("0x07")
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testReceipts1 = []*types.Receipt{types.NewReceipt(receiptRoot1.Bytes(), false, 1000), types.NewReceipt(receiptRoot2.Bytes(), false, 2000)}
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testReceipts2 = []*types.Receipt{types.NewReceipt(receiptRoot3.Bytes(), false, 3000)}
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event1 = core.ChainEvent{Block: testBlock1}
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event2 = core.ChainEvent{Block: testBlock2}
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event3 = core.ChainEvent{Block: testBlock3}
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defaultParams = statediff.Params{
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IncludeBlock: true,
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IncludeReceipts: true,
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IncludeTD: true,
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WatchedAddresses: []common.Address{},
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}
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)
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func init() {
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defaultParams.ComputeWatchedAddressesLeafPaths()
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}
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func testErrorInChainEventLoop(t *testing.T) {
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//the first chain event causes and error (in blockchain mock)
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builder := mocks.Builder{}
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blockChain := mocks.BlockChain{}
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serviceQuit := make(chan bool)
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service := statediff.Service{
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Builder: &builder,
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BlockChain: &blockChain,
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QuitChan: serviceQuit,
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Subscriptions: make(map[common.Hash]map[statediff.SubID]statediff.Subscription),
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SubscriptionTypes: make(map[common.Hash]statediff.Params),
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BlockCache: statediff.NewBlockCache(1),
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}
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payloadChan := make(chan statediff.Payload, 2)
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quitChan := make(chan bool)
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service.Subscribe(payloadChan, quitChan, defaultParams)
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// FIXME why is this here?
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testRoot2 = common.HexToHash("0xTestRoot2")
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blockMapping := make(map[common.Hash]*types.Block)
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blockMapping[parentBlock1.Hash()] = parentBlock1
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blockMapping[parentBlock2.Hash()] = parentBlock2
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blockChain.SetBlocksForHashes(blockMapping)
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blockChain.SetChainEvents([]core.ChainEvent{event1, event2, event3})
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blockChain.SetReceiptsForHash(testBlock1.Hash(), testReceipts1)
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blockChain.SetReceiptsForHash(testBlock2.Hash(), testReceipts2)
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payloads := make([]statediff.Payload, 0, 2)
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wg := new(sync.WaitGroup)
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wg.Add(1)
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go func() {
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for i := 0; i < 2; i++ {
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select {
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case payload := <-payloadChan:
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payloads = append(payloads, payload)
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case <-quitChan:
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}
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}
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wg.Done()
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}()
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service.PublishLoop(eventsChannel)
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wg.Wait()
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require.Equal(t, 2, len(payloads), "number of payloads")
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testReceipts1Rlp, err := rlp.EncodeToBytes(&testReceipts1)
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if err != nil {
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t.Error(err)
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}
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testReceipts2Rlp, err := rlp.EncodeToBytes(&testReceipts2)
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if err != nil {
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t.Error(err)
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}
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expectedReceiptsRlp := [][]byte{testReceipts1Rlp, testReceipts2Rlp, nil}
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for i, payload := range payloads {
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require.Equal(t, expectedReceiptsRlp[i], payload.ReceiptsRlp, "payload %d", i)
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}
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require.Equal(t, builder.Params, defaultParams)
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require.Equal(t, testBlock2.Hash(), builder.Args.BlockHash)
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require.Equal(t, parentBlock2.Root(), builder.Args.OldStateRoot)
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require.Equal(t, testBlock2.Root(), builder.Args.NewStateRoot)
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//look up the parent block from its hash
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expectedHashes := []common.Hash{testBlock1.ParentHash(), testBlock2.ParentHash()}
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require.Equal(t, expectedHashes, blockChain.HashesLookedUp)
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}
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func testErrorInBlockLoop(t *testing.T) {
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//second block's parent block can't be found
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builder := mocks.Builder{}
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blockChain := mocks.BlockChain{}
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service := statediff.Service{
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Builder: &builder,
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BlockChain: &blockChain,
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QuitChan: make(chan bool),
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Subscriptions: make(map[common.Hash]map[statediff.SubID]statediff.Subscription),
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SubscriptionTypes: make(map[common.Hash]statediff.Params),
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BlockCache: statediff.NewBlockCache(1),
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}
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payloadChan := make(chan statediff.Payload)
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quitChan := make(chan bool)
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service.Subscribe(payloadChan, quitChan, defaultParams)
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blockMapping := make(map[common.Hash]*types.Block)
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blockMapping[parentBlock1.Hash()] = parentBlock1
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blockChain.SetBlocksForHashes(blockMapping)
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blockChain.SetChainEvents([]core.ChainEvent{event1, event2})
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// Need to have listeners on the channels or the subscription will be closed and the processing halted
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go func() {
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select {
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case <-payloadChan:
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case <-quitChan:
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}
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}()
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service.PublishLoop(eventsChannel)
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require.Equal(t, defaultParams, builder.Params)
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require.Equal(t, testBlock1.Hash(), builder.Args.BlockHash)
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require.Equal(t, parentBlock1.Root(), builder.Args.OldStateRoot)
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require.Equal(t, testBlock1.Root(), builder.Args.NewStateRoot)
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}
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func TestGetStateDiffAt(t *testing.T) {
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mockStateDiff := sdtypes.StateObject{
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BlockNumber: testBlock1.Number(),
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BlockHash: testBlock1.Hash(),
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}
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expectedStateDiffRlp, err := rlp.EncodeToBytes(&mockStateDiff)
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if err != nil {
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t.Error(err)
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}
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expectedReceiptsRlp, err := rlp.EncodeToBytes(&testReceipts1)
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if err != nil {
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t.Error(err)
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}
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expectedBlockRlp, err := rlp.EncodeToBytes(testBlock1)
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if err != nil {
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t.Error(err)
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}
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expectedStateDiffPayload := statediff.Payload{
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StateObjectRlp: expectedStateDiffRlp,
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ReceiptsRlp: expectedReceiptsRlp,
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BlockRlp: expectedBlockRlp,
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}
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expectedStateDiffPayloadRlp, err := rlp.EncodeToBytes(&expectedStateDiffPayload)
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if err != nil {
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t.Error(err)
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}
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builder := mocks.Builder{}
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builder.SetStateDiffToBuild(mockStateDiff)
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blockChain := mocks.BlockChain{}
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blockMapping := make(map[common.Hash]*types.Block)
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blockMapping[parentBlock1.Hash()] = parentBlock1
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blockChain.SetBlocksForHashes(blockMapping)
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blockChain.SetBlockForNumber(testBlock1, testBlock1.NumberU64())
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blockChain.SetReceiptsForHash(testBlock1.Hash(), testReceipts1)
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service := statediff.Service{
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Builder: &builder,
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BlockChain: &blockChain,
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QuitChan: make(chan bool),
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Subscriptions: make(map[common.Hash]map[statediff.SubID]statediff.Subscription),
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SubscriptionTypes: make(map[common.Hash]statediff.Params),
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BlockCache: statediff.NewBlockCache(1),
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}
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stateDiffPayload, err := service.StateDiffAt(testBlock1.NumberU64(), defaultParams)
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if err != nil {
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t.Error(err)
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}
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stateDiffPayloadRlp, err := rlp.EncodeToBytes(stateDiffPayload)
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if err != nil {
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t.Error(err)
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}
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require.Equal(t, defaultParams, builder.Params)
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require.Equal(t, testBlock1.Hash(), builder.Args.BlockHash)
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require.Equal(t, parentBlock1.Root(), builder.Args.OldStateRoot)
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require.Equal(t, testBlock1.Root(), builder.Args.NewStateRoot)
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require.Equal(t, stateDiffPayloadRlp, expectedStateDiffPayloadRlp)
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}
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type writeSub struct {
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ch <-chan statediff.JobStatus
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unsubscribe func()
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}
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func subscribeWritesService(t *testing.T, api *statediff.PublicAPI) writeSub {
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ctx, cancel := context.WithCancel(context.Background())
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sub, err := api.StreamWrites(ctx)
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require.NoError(t, err)
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return writeSub{sub, cancel}
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}
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func (ws writeSub) awaitStatus(job statediff.JobID, timeout time.Duration) (bool, error) {
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deadline := time.After(timeout)
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for {
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select {
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case status := <-ws.ch:
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if status.Err != nil {
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return false, status.Err
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}
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if status.ID == job {
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return true, nil
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}
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case <-deadline:
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return false, errors.New("timeout")
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}
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}
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}
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func TestWriteStateDiffAt(t *testing.T) {
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builder := mocks.Builder{}
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indexer := mocks.StateDiffIndexer{}
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blockChain := mocks.BlockChain{}
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blockMapping := make(map[common.Hash]*types.Block)
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blockMapping[parentBlock1.Hash()] = parentBlock1
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blockChain.SetBlocksForHashes(blockMapping)
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blockChain.SetBlockForNumber(testBlock1, testBlock1.NumberU64())
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blockChain.SetReceiptsForHash(testBlock1.Hash(), testReceipts1)
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service, err := statediff.NewService(statediff.Config{}, &blockChain, &mocks.Backend{}, &indexer)
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require.NoError(t, err)
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service.Builder = &builder
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api := statediff.NewPublicAPI(service)
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// delay to avoid subscription request being sent after statediff is written
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writeDelay := 200 * time.Millisecond
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// timeout to prevent hanging just in case it still happens
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jobTimeout := 2 * time.Second
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ws := subscribeWritesService(t, api)
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time.Sleep(writeDelay)
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job := service.WriteStateDiffAt(testBlock1.NumberU64(), defaultParams)
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ok, err := ws.awaitStatus(job, jobTimeout)
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require.NoError(t, err)
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require.True(t, ok)
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require.Equal(t, defaultParams, builder.Params)
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require.Equal(t, testBlock1.Hash(), builder.Args.BlockHash)
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require.Equal(t, parentBlock1.Root(), builder.Args.OldStateRoot)
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require.Equal(t, testBlock1.Root(), builder.Args.NewStateRoot)
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// verify we get nothing after unsubscribing
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ws.unsubscribe()
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job = service.WriteStateDiffAt(testBlock1.NumberU64(), defaultParams)
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ok, _ = ws.awaitStatus(job, jobTimeout)
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require.False(t, ok)
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// re-subscribe and test again
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ws = subscribeWritesService(t, api)
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time.Sleep(writeDelay)
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job = service.WriteStateDiffAt(testBlock1.NumberU64(), defaultParams)
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ok, err = ws.awaitStatus(job, jobTimeout)
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require.NoError(t, err)
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require.True(t, ok)
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}
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// This function will create a backend and service object which includes a generic Backend
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func createServiceWithMockBackend(t *testing.T, curBlock uint64, highestBlock uint64) (*mocks.Backend, *statediff.Service) {
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builder := mocks.Builder{}
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blockChain := mocks.BlockChain{}
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backend := mocks.NewBackend(t, ethereum.SyncProgress{
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StartingBlock: 1,
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CurrentBlock: curBlock,
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HighestBlock: highestBlock,
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SyncedAccounts: 5,
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SyncedAccountBytes: 5,
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SyncedBytecodes: 5,
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SyncedBytecodeBytes: 5,
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SyncedStorage: 5,
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SyncedStorageBytes: 5,
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HealedTrienodes: 5,
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HealedTrienodeBytes: 5,
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HealedBytecodes: 5,
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HealedBytecodeBytes: 5,
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HealingTrienodes: 5,
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HealingBytecode: 5,
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})
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service := &statediff.Service{
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Builder: &builder,
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BlockChain: &blockChain,
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QuitChan: make(chan bool),
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Subscriptions: make(map[common.Hash]map[statediff.SubID]statediff.Subscription),
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SubscriptionTypes: make(map[common.Hash]statediff.Params),
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BlockCache: statediff.NewBlockCache(1),
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BackendAPI: backend,
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ShouldWaitForSync: true,
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}
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return backend, service
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}
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// TestWaitForSync ensures that the service waits until the blockchain has caught up to head
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func TestWaitForSync(t *testing.T) {
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// Trivial case
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_, service := createServiceWithMockBackend(t, 10, 10)
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service.WaitForSync()
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// Catching-up case
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var highestBlock uint64 = 5
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// Create a service and a backend that is lagging behind the sync.
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backend, service := createServiceWithMockBackend(t, 0, highestBlock)
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syncComplete := make(chan int, 1)
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go func() {
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service.WaitForSync()
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syncComplete <- 0
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}()
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// Iterate blocks, updating the current synced block
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for currentBlock := uint64(0); currentBlock <= highestBlock; currentBlock++ {
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backend.SetCurrentBlock(currentBlock)
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if currentBlock < highestBlock {
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// Ensure we are still waiting if we haven't actually reached head
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require.Equal(t, len(syncComplete), 0)
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}
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}
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timeout := time.After(time.Second)
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for {
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select {
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case <-syncComplete:
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return
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case <-timeout:
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t.Fatal("timed out waiting for sync to complete")
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}
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}
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}
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