270 lines
9.6 KiB
Go
270 lines
9.6 KiB
Go
// VulcanizeDB
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// Copyright © 2019 Vulcanize
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero 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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// This program 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 Affero General Public License for more details.
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package watcher_test
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import (
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"github.com/ethereum/go-ethereum/crypto"
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"io/ioutil"
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"os"
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"time"
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"github.com/ethereum/go-ethereum/common"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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"github.com/sirupsen/logrus"
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"github.com/vulcanize/vulcanizedb/libraries/shared/mocks"
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"github.com/vulcanize/vulcanizedb/libraries/shared/storage/utils"
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"github.com/vulcanize/vulcanizedb/libraries/shared/transformer"
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"github.com/vulcanize/vulcanizedb/libraries/shared/watcher"
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"github.com/vulcanize/vulcanizedb/pkg/fakes"
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"github.com/vulcanize/vulcanizedb/test_config"
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)
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var _ = Describe("Geth Storage Watcher", func() {
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It("adds transformers", func() {
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fakeAddress := common.HexToAddress("0x12345")
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fakeTransformer := &mocks.MockStorageTransformer{Address: fakeAddress}
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w := watcher.NewGethStorageWatcher(mocks.NewMockStorageFetcher(), test_config.NewTestDB(test_config.NewTestNode()))
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w.AddTransformers([]transformer.StorageTransformerInitializer{fakeTransformer.FakeTransformerInitializer})
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Expect(w.Transformers[fakeAddress]).To(Equal(fakeTransformer))
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})
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Describe("executing watcher", func() {
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var (
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errs chan error
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mockFetcher *mocks.MockStorageFetcher
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mockQueue *mocks.MockStorageQueue
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mockTransformer *mocks.MockStorageTransformer
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gethDiff utils.StorageDiff
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diffs chan utils.StorageDiff
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storageWatcher watcher.GethStorageWatcher
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address common.Address
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keccakOfAddress common.Hash
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)
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BeforeEach(func() {
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errs = make(chan error)
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diffs = make(chan utils.StorageDiff)
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address = common.HexToAddress("0x0123456789abcdef")
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keccakOfAddress = common.BytesToHash(crypto.Keccak256(address[:]))
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mockFetcher = mocks.NewMockStorageFetcher()
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mockQueue = &mocks.MockStorageQueue{}
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mockTransformer = &mocks.MockStorageTransformer{Address: address}
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gethDiff = utils.StorageDiff{
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Id: 1338,
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KeccakOfContractAddress: keccakOfAddress,
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BlockHash: common.HexToHash("0xfedcba9876543210"),
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BlockHeight: 0,
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StorageKey: common.HexToHash("0xabcdef1234567890"),
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StorageValue: common.HexToHash("0x9876543210abcdef"),
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}
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})
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It("logs error if fetching storage diffs fails", func(done Done) {
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mockFetcher.ErrsToReturn = []error{fakes.FakeError}
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storageWatcher = watcher.NewGethStorageWatcher(mockFetcher, test_config.NewTestDB(test_config.NewTestNode()))
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storageWatcher.Queue = mockQueue
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storageWatcher.AddTransformers([]transformer.StorageTransformerInitializer{mockTransformer.FakeTransformerInitializer})
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tempFile, fileErr := ioutil.TempFile("", "log")
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Expect(fileErr).NotTo(HaveOccurred())
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defer os.Remove(tempFile.Name())
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logrus.SetOutput(tempFile)
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go storageWatcher.Execute(diffs, errs, time.Hour)
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Eventually(func() (string, error) {
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logContent, err := ioutil.ReadFile(tempFile.Name())
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return string(logContent), err
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}).Should(ContainSubstring(fakes.FakeError.Error()))
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close(done)
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})
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Describe("transforming new storage diffs", func() {
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BeforeEach(func() {
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mockFetcher.DiffsToReturn = []utils.StorageDiff{gethDiff}
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storageWatcher = watcher.NewGethStorageWatcher(mockFetcher, test_config.NewTestDB(test_config.NewTestNode()))
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storageWatcher.Queue = mockQueue
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storageWatcher.AddTransformers([]transformer.StorageTransformerInitializer{mockTransformer.FakeTransformerInitializer})
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})
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It("executes transformer for recognized storage diff", func(done Done) {
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go storageWatcher.Execute(diffs, errs, time.Hour)
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Eventually(func() utils.StorageDiff {
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return mockTransformer.PassedDiff
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}).Should(Equal(gethDiff))
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close(done)
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})
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It("queues diff for later processing if transformer execution fails", func(done Done) {
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mockTransformer.ExecuteErr = fakes.FakeError
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go storageWatcher.Execute(diffs, errs, time.Hour)
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Expect(<-errs).To(BeNil())
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Eventually(func() bool {
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return mockQueue.AddCalled
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}).Should(BeTrue())
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Eventually(func() utils.StorageDiff {
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return mockQueue.AddPassedDiff
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}).Should(Equal(gethDiff))
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close(done)
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})
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It("logs error if queueing diff fails", func(done Done) {
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mockTransformer.ExecuteErr = utils.ErrStorageKeyNotFound{}
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mockQueue.AddError = fakes.FakeError
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tempFile, fileErr := ioutil.TempFile("", "log")
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Expect(fileErr).NotTo(HaveOccurred())
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defer os.Remove(tempFile.Name())
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logrus.SetOutput(tempFile)
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go storageWatcher.Execute(diffs, errs, time.Hour)
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Eventually(func() bool {
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return mockQueue.AddCalled
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}).Should(BeTrue())
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Eventually(func() (string, error) {
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logContent, err := ioutil.ReadFile(tempFile.Name())
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return string(logContent), err
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}).Should(ContainSubstring(fakes.FakeError.Error()))
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close(done)
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})
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It("keeps track transformers by the keccak256 hash of their contract address ", func(done Done) {
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go storageWatcher.Execute(diffs, errs, time.Hour)
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m := make(map[common.Hash]transformer.StorageTransformer)
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m[keccakOfAddress] = mockTransformer
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Eventually(func() map[common.Hash]transformer.StorageTransformer {
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return storageWatcher.KeccakAddressTransformers
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}).Should(Equal(m))
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close(done)
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})
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It("gets the transformer from the known keccak address map first", func(done Done) {
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anotherAddress := common.HexToAddress("0xafakeaddress")
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anotherTransformer := &mocks.MockStorageTransformer{Address: anotherAddress}
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keccakOfAnotherAddress := common.BytesToHash(crypto.Keccak256(anotherAddress[:]))
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anotherGethDiff := utils.StorageDiff{
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Id: 1338,
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KeccakOfContractAddress: keccakOfAnotherAddress,
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BlockHash: common.HexToHash("0xfedcba9876543210"),
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BlockHeight: 0,
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StorageKey: common.HexToHash("0xabcdef1234567890"),
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StorageValue: common.HexToHash("0x9876543210abcdef"),
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}
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mockFetcher.DiffsToReturn = []utils.StorageDiff{anotherGethDiff}
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storageWatcher.KeccakAddressTransformers[keccakOfAnotherAddress] = anotherTransformer
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go storageWatcher.Execute(diffs, errs, time.Hour)
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Eventually(func() utils.StorageDiff {
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return anotherTransformer.PassedDiff
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}).Should(Equal(anotherGethDiff))
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close(done)
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})
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})
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Describe("transforming queued storage diffs", func() {
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BeforeEach(func() {
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mockQueue.DiffsToReturn = []utils.StorageDiff{gethDiff}
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storageWatcher = watcher.NewGethStorageWatcher(mockFetcher, test_config.NewTestDB(test_config.NewTestNode()))
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storageWatcher.Queue = mockQueue
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storageWatcher.AddTransformers([]transformer.StorageTransformerInitializer{mockTransformer.FakeTransformerInitializer})
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})
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It("executes transformer for storage diff", func(done Done) {
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go storageWatcher.Execute(diffs, errs, time.Nanosecond)
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Eventually(func() utils.StorageDiff {
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return mockTransformer.PassedDiff
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}).Should(Equal(gethDiff))
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close(done)
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})
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It("deletes diff from queue if transformer execution successful", func(done Done) {
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go storageWatcher.Execute(diffs, errs, time.Nanosecond)
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Eventually(func() int {
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return mockQueue.DeletePassedId
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}).Should(Equal(gethDiff.Id))
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close(done)
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})
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It("logs error if deleting persisted diff fails", func(done Done) {
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mockQueue.DeleteErr = fakes.FakeError
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tempFile, fileErr := ioutil.TempFile("", "log")
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Expect(fileErr).NotTo(HaveOccurred())
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defer os.Remove(tempFile.Name())
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logrus.SetOutput(tempFile)
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go storageWatcher.Execute(diffs, errs, time.Nanosecond)
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Eventually(func() (string, error) {
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logContent, err := ioutil.ReadFile(tempFile.Name())
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return string(logContent), err
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}).Should(ContainSubstring(fakes.FakeError.Error()))
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close(done)
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})
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It("deletes obsolete diff from queue if contract not recognized", func(done Done) {
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obsoleteDiff := utils.StorageDiff{
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Id: gethDiff.Id + 1,
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Contract: common.HexToAddress("0xfedcba9876543210"),
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}
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mockQueue.DiffsToReturn = []utils.StorageDiff{obsoleteDiff}
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go storageWatcher.Execute(diffs, errs, time.Nanosecond)
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Eventually(func() int {
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return mockQueue.DeletePassedId
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}).Should(Equal(obsoleteDiff.Id))
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close(done)
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})
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It("logs error if deleting obsolete diff fails", func(done Done) {
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obsoleteDiff := utils.StorageDiff{
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Id: gethDiff.Id + 1,
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Contract: common.HexToAddress("0xfedcba9876543210"),
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}
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mockQueue.DiffsToReturn = []utils.StorageDiff{obsoleteDiff}
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mockQueue.DeleteErr = fakes.FakeError
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tempFile, fileErr := ioutil.TempFile("", "log")
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Expect(fileErr).NotTo(HaveOccurred())
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defer os.Remove(tempFile.Name())
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logrus.SetOutput(tempFile)
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go storageWatcher.Execute(diffs, errs, time.Nanosecond)
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Eventually(func() (string, error) {
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logContent, err := ioutil.ReadFile(tempFile.Name())
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return string(logContent), err
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}).Should(ContainSubstring(fakes.FakeError.Error()))
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close(done)
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})
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})
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})
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})
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