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Return error when no logs/headers available

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- Replaces bool and moots question of error/bool ordering
- Also make event watcher execution synchronous
This commit is contained in:
Rob Mulholand 2019-09-18 20:55:15 -05:00
parent 2b798e00e0
commit 4fa19be90a
9 changed files with 137 additions and 164 deletions
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10
cmd/execute.go
View File

@ -160,13 +160,9 @@ func watchEthEvents(w *watcher.EventWatcher, wg *syn.WaitGroup) {
} else {
recheck = constants.HeaderUnchecked
}
errs := make(chan error)
go w.Execute(recheck, errs)
for {
select {
case err := <-errs:
LogWithCommand.Fatalf("error executing event watcher: %s", err.Error())
}
err := w.Execute(recheck)
if err != nil {
LogWithCommand.Fatalf("error executing event watcher: %s", err.Error())
}
}

22
libraries/shared/logs/delegator.go
View File

@ -25,16 +25,14 @@ import (
"github.com/vulcanize/vulcanizedb/pkg/datastore"
)
var ErrNoTransformers = errors.New("no event transformers configured in the log delegator")
const (
logsFound = true
noLogsFound = false
var (
ErrNoLogs = errors.New("no logs available for transforming")
ErrNoTransformers = errors.New("no event transformers configured in the log delegator")
)
type ILogDelegator interface {
AddTransformer(t transformer.EventTransformer)
DelegateLogs() (error, bool)
DelegateLogs() error
}
type LogDelegator struct {
@ -48,28 +46,28 @@ func (delegator *LogDelegator) AddTransformer(t transformer.EventTransformer) {
delegator.Chunker.AddConfig(t.GetConfig())
}
func (delegator *LogDelegator) DelegateLogs() (error, bool) {
func (delegator *LogDelegator) DelegateLogs() error {
if len(delegator.Transformers) < 1 {
return ErrNoTransformers, noLogsFound
return ErrNoTransformers
}
persistedLogs, fetchErr := delegator.LogRepository.GetUntransformedHeaderSyncLogs()
if fetchErr != nil {
logrus.Errorf("error loading logs from db: %s", fetchErr.Error())
return fetchErr, noLogsFound
return fetchErr
}
if len(persistedLogs) < 1 {
return nil, noLogsFound
return ErrNoLogs
}
transformErr := delegator.delegateLogs(persistedLogs)
if transformErr != nil {
logrus.Errorf("error transforming logs: %s", transformErr)
return transformErr, logsFound
return transformErr
}
return nil, logsFound
return nil
}
func (delegator *LogDelegator) delegateLogs(logs []core.HeaderSyncLog) error {

30
libraries/shared/logs/delegator_test.go
View File

@ -59,10 +59,10 @@ var _ = Describe("Log delegator", func() {
})
Describe("DelegateLogs", func() {
It("returns an error if no transformers configured", func() {
It("returns error if no transformers configured", func() {
delegator := newDelegator(&fakes.MockHeaderSyncLogRepository{})
err, _ := delegator.DelegateLogs()
err := delegator.DelegateLogs()
Expect(err).To(HaveOccurred())
Expect(err).To(MatchError(logs.ErrNoTransformers))
@ -70,35 +70,36 @@ var _ = Describe("Log delegator", func() {
It("gets untransformed logs", func() {
mockLogRepository := &fakes.MockHeaderSyncLogRepository{}
mockLogRepository.ReturnLogs = []core.HeaderSyncLog{{}}
delegator := newDelegator(mockLogRepository)
delegator.AddTransformer(&mocks.MockEventTransformer{})
err, _ := delegator.DelegateLogs()
err := delegator.DelegateLogs()
Expect(err).NotTo(HaveOccurred())
Expect(mockLogRepository.GetCalled).To(BeTrue())
})
It("emits error if getting untransformed logs fails", func() {
It("returns error if getting untransformed logs fails", func() {
mockLogRepository := &fakes.MockHeaderSyncLogRepository{}
mockLogRepository.GetError = fakes.FakeError
delegator := newDelegator(mockLogRepository)
delegator.AddTransformer(&mocks.MockEventTransformer{})
err, _ := delegator.DelegateLogs()
err := delegator.DelegateLogs()
Expect(err).To(HaveOccurred())
Expect(err).To(MatchError(fakes.FakeError))
})
It("emits that no logs were found if no logs returned", func() {
It("returns error that no logs were found if no logs returned", func() {
delegator := newDelegator(&fakes.MockHeaderSyncLogRepository{})
delegator.AddTransformer(&mocks.MockEventTransformer{})
err, logsFound := delegator.DelegateLogs()
err := delegator.DelegateLogs()
Expect(err).NotTo(HaveOccurred())
Expect(logsFound).To(BeFalse())
Expect(err).To(HaveOccurred())
Expect(err).To(MatchError(logs.ErrNoLogs))
})
It("delegates chunked logs to transformers", func() {
@ -115,27 +116,27 @@ var _ = Describe("Log delegator", func() {
delegator := newDelegator(mockLogRepository)
delegator.AddTransformer(fakeTransformer)
err, _ := delegator.DelegateLogs()
err := delegator.DelegateLogs()
Expect(err).NotTo(HaveOccurred())
Expect(fakeTransformer.ExecuteWasCalled).To(BeTrue())
Expect(fakeTransformer.PassedLogs).To(Equal(fakeHeaderSyncLogs))
})
It("emits error if transformer returns an error", func() {
It("returns error if transformer returns an error", func() {
mockLogRepository := &fakes.MockHeaderSyncLogRepository{}
mockLogRepository.ReturnLogs = []core.HeaderSyncLog{{}}
delegator := newDelegator(mockLogRepository)
fakeTransformer := &mocks.MockEventTransformer{ExecuteError: fakes.FakeError}
delegator.AddTransformer(fakeTransformer)
err, _ := delegator.DelegateLogs()
err := delegator.DelegateLogs()
Expect(err).To(HaveOccurred())
Expect(err).To(MatchError(fakes.FakeError))
})
It("emits logs found when logs returned and delegated", func() {
It("returns nil for error when logs returned and delegated", func() {
fakeTransformer := &mocks.MockEventTransformer{}
config := mocks.FakeTransformerConfig
fakeTransformer.SetTransformerConfig(config)
@ -149,10 +150,9 @@ var _ = Describe("Log delegator", func() {
delegator := newDelegator(mockLogRepository)
delegator.AddTransformer(fakeTransformer)
err, logsFound := delegator.DelegateLogs()
err := delegator.DelegateLogs()
Expect(err).NotTo(HaveOccurred())
Expect(logsFound).To(BeTrue())
})
})
})

28
libraries/shared/logs/extractor.go
View File

@ -28,16 +28,14 @@ import (
"github.com/vulcanize/vulcanizedb/pkg/datastore"
)
var ErrNoWatchedAddresses = errors.New("no watched addresses configured in the log extractor")
const (
uncheckedHeadersFound = true
noUncheckedHeadersFound = false
var (
ErrNoUncheckedHeaders = errors.New("no unchecked headers available for log fetching")
ErrNoWatchedAddresses = errors.New("no watched addresses configured in the log extractor")
)
type ILogExtractor interface {
AddTransformerConfig(config transformer.EventTransformerConfig) error
ExtractLogs(recheckHeaders constants.TransformerExecution) (error, bool)
ExtractLogs(recheckHeaders constants.TransformerExecution) error
}
type LogExtractor struct {
@ -71,50 +69,50 @@ func (extractor *LogExtractor) AddTransformerConfig(config transformer.EventTran
}
// Fetch and persist watched logs
func (extractor LogExtractor) ExtractLogs(recheckHeaders constants.TransformerExecution) (error, bool) {
func (extractor LogExtractor) ExtractLogs(recheckHeaders constants.TransformerExecution) error {
if len(extractor.Addresses) < 1 {
logrus.Errorf("error extracting logs: %s", ErrNoWatchedAddresses.Error())
return ErrNoWatchedAddresses, noUncheckedHeadersFound
return ErrNoWatchedAddresses
}
uncheckedHeaders, uncheckedHeadersErr := extractor.CheckedHeadersRepository.UncheckedHeaders(*extractor.StartingBlock, -1, getCheckCount(recheckHeaders))
if uncheckedHeadersErr != nil {
logrus.Errorf("error fetching missing headers: %s", uncheckedHeadersErr)
return uncheckedHeadersErr, noUncheckedHeadersFound
return uncheckedHeadersErr
}
if len(uncheckedHeaders) < 1 {
return nil, noUncheckedHeadersFound
return ErrNoUncheckedHeaders
}
for _, header := range uncheckedHeaders {
logs, fetchLogsErr := extractor.Fetcher.FetchLogs(extractor.Addresses, extractor.Topics, header)
if fetchLogsErr != nil {
logError("error fetching logs for header: %s", fetchLogsErr, header)
return fetchLogsErr, uncheckedHeadersFound
return fetchLogsErr
}
if len(logs) > 0 {
transactionsSyncErr := extractor.Syncer.SyncTransactions(header.Id, logs)
if transactionsSyncErr != nil {
logError("error syncing transactions: %s", transactionsSyncErr, header)
return transactionsSyncErr, uncheckedHeadersFound
return transactionsSyncErr
}
createLogsErr := extractor.LogRepository.CreateHeaderSyncLogs(header.Id, logs)
if createLogsErr != nil {
logError("error persisting logs: %s", createLogsErr, header)
return createLogsErr, uncheckedHeadersFound
return createLogsErr
}
}
markHeaderCheckedErr := extractor.CheckedHeadersRepository.MarkHeaderChecked(header.Id)
if markHeaderCheckedErr != nil {
logError("error marking header checked: %s", markHeaderCheckedErr, header)
return markHeaderCheckedErr, uncheckedHeadersFound
return markHeaderCheckedErr
}
}
return nil, uncheckedHeadersFound
return nil
}
func earlierStartingBlockNumber(transformerBlock, watcherBlock int64) bool {

42
libraries/shared/logs/extractor_test.go
View File

@ -157,7 +157,7 @@ var _ = Describe("Log extractor", func() {
Describe("ExtractLogs", func() {
It("returns error if no watched addresses configured", func() {
err, _ := extractor.ExtractLogs(constants.HeaderUnchecked)
err := extractor.ExtractLogs(constants.HeaderUnchecked)
Expect(err).To(HaveOccurred())
Expect(err).To(MatchError(logs.ErrNoWatchedAddresses))
@ -171,7 +171,7 @@ var _ = Describe("Log extractor", func() {
startingBlockNumber := rand.Int63()
extractor.AddTransformerConfig(getTransformerConfig(startingBlockNumber))
err, _ := extractor.ExtractLogs(constants.HeaderUnchecked)
err := extractor.ExtractLogs(constants.HeaderUnchecked)
Expect(err).NotTo(HaveOccurred())
Expect(mockCheckedHeadersRepository.UncheckedHeadersStartingBlockNumber).To(Equal(startingBlockNumber))
@ -188,7 +188,7 @@ var _ = Describe("Log extractor", func() {
startingBlockNumber := rand.Int63()
extractor.AddTransformerConfig(getTransformerConfig(startingBlockNumber))
err, _ := extractor.ExtractLogs(constants.HeaderRecheck)
err := extractor.ExtractLogs(constants.HeaderRecheck)
Expect(err).NotTo(HaveOccurred())
Expect(mockCheckedHeadersRepository.UncheckedHeadersStartingBlockNumber).To(Equal(startingBlockNumber))
@ -197,13 +197,13 @@ var _ = Describe("Log extractor", func() {
})
})
It("emits error if getting unchecked headers fails", func() {
It("returns error if getting unchecked headers fails", func() {
addTransformerConfig(extractor)
mockCheckedHeadersRepository := &fakes.MockCheckedHeadersRepository{}
mockCheckedHeadersRepository.UncheckedHeadersReturnError = fakes.FakeError
extractor.CheckedHeadersRepository = mockCheckedHeadersRepository
err, _ := extractor.ExtractLogs(constants.HeaderUnchecked)
err := extractor.ExtractLogs(constants.HeaderUnchecked)
Expect(err).To(HaveOccurred())
Expect(err).To(MatchError(fakes.FakeError))
@ -215,20 +215,19 @@ var _ = Describe("Log extractor", func() {
mockLogFetcher := &mocks.MockLogFetcher{}
extractor.Fetcher = mockLogFetcher
err, _ := extractor.ExtractLogs(constants.HeaderUnchecked)
_ = extractor.ExtractLogs(constants.HeaderUnchecked)
Expect(err).NotTo(HaveOccurred())
Expect(mockLogFetcher.FetchCalled).To(BeFalse())
})
It("emits that no unchecked headers were found", func() {
It("returns error that no unchecked headers were found", func() {
addTransformerConfig(extractor)
mockLogFetcher := &mocks.MockLogFetcher{}
extractor.Fetcher = mockLogFetcher
_, uncheckedHeadersFound := extractor.ExtractLogs(constants.HeaderUnchecked)
err := extractor.ExtractLogs(constants.HeaderUnchecked)
Expect(uncheckedHeadersFound).To(BeFalse())
Expect(err).To(MatchError(logs.ErrNoUncheckedHeaders))
})
})
@ -245,7 +244,7 @@ var _ = Describe("Log extractor", func() {
mockLogFetcher := &mocks.MockLogFetcher{}
extractor.Fetcher = mockLogFetcher
err, _ := extractor.ExtractLogs(constants.HeaderUnchecked)
err := extractor.ExtractLogs(constants.HeaderUnchecked)
Expect(err).NotTo(HaveOccurred())
Expect(mockLogFetcher.FetchCalled).To(BeTrue())
@ -262,7 +261,7 @@ var _ = Describe("Log extractor", func() {
mockLogFetcher.ReturnError = fakes.FakeError
extractor.Fetcher = mockLogFetcher
err, _ := extractor.ExtractLogs(constants.HeaderUnchecked)
err := extractor.ExtractLogs(constants.HeaderUnchecked)
Expect(err).To(HaveOccurred())
Expect(err).To(MatchError(fakes.FakeError))
@ -275,7 +274,7 @@ var _ = Describe("Log extractor", func() {
mockTransactionSyncer := &fakes.MockTransactionSyncer{}
extractor.Syncer = mockTransactionSyncer
err, _ := extractor.ExtractLogs(constants.HeaderUnchecked)
err := extractor.ExtractLogs(constants.HeaderUnchecked)
Expect(err).NotTo(HaveOccurred())
Expect(mockTransactionSyncer.SyncTransactionsCalled).To(BeFalse())
@ -290,7 +289,7 @@ var _ = Describe("Log extractor", func() {
mockTransactionSyncer := &fakes.MockTransactionSyncer{}
extractor.Syncer = mockTransactionSyncer
err, _ := extractor.ExtractLogs(constants.HeaderUnchecked)
err := extractor.ExtractLogs(constants.HeaderUnchecked)
Expect(err).NotTo(HaveOccurred())
Expect(mockTransactionSyncer.SyncTransactionsCalled).To(BeTrue())
@ -304,7 +303,7 @@ var _ = Describe("Log extractor", func() {
mockTransactionSyncer.SyncTransactionsError = fakes.FakeError
extractor.Syncer = mockTransactionSyncer
err, _ := extractor.ExtractLogs(constants.HeaderUnchecked)
err := extractor.ExtractLogs(constants.HeaderUnchecked)
Expect(err).To(HaveOccurred())
Expect(err).To(MatchError(fakes.FakeError))
@ -324,7 +323,7 @@ var _ = Describe("Log extractor", func() {
mockLogRepository := &fakes.MockHeaderSyncLogRepository{}
extractor.LogRepository = mockLogRepository
err, _ := extractor.ExtractLogs(constants.HeaderUnchecked)
err := extractor.ExtractLogs(constants.HeaderUnchecked)
Expect(err).NotTo(HaveOccurred())
Expect(mockLogRepository.PassedLogs).To(Equal(fakeLogs))
@ -338,7 +337,7 @@ var _ = Describe("Log extractor", func() {
mockLogRepository.CreateError = fakes.FakeError
extractor.LogRepository = mockLogRepository
err, _ := extractor.ExtractLogs(constants.HeaderUnchecked)
err := extractor.ExtractLogs(constants.HeaderUnchecked)
Expect(err).To(HaveOccurred())
Expect(err).To(MatchError(fakes.FakeError))
@ -353,7 +352,7 @@ var _ = Describe("Log extractor", func() {
mockCheckedHeadersRepository.UncheckedHeadersReturnHeaders = []core.Header{{Id: headerID}}
extractor.CheckedHeadersRepository = mockCheckedHeadersRepository
err, _ := extractor.ExtractLogs(constants.HeaderUnchecked)
err := extractor.ExtractLogs(constants.HeaderUnchecked)
Expect(err).NotTo(HaveOccurred())
Expect(mockCheckedHeadersRepository.MarkHeaderCheckedHeaderID).To(Equal(headerID))
@ -367,20 +366,19 @@ var _ = Describe("Log extractor", func() {
mockCheckedHeadersRepository.MarkHeaderCheckedReturnError = fakes.FakeError
extractor.CheckedHeadersRepository = mockCheckedHeadersRepository
err, _ := extractor.ExtractLogs(constants.HeaderUnchecked)
err := extractor.ExtractLogs(constants.HeaderUnchecked)
Expect(err).To(HaveOccurred())
Expect(err).To(MatchError(fakes.FakeError))
})
It("emits that missing headers were found", func() {
It("returns nil for error if everything succeeds", func() {
addUncheckedHeader(extractor)
addTransformerConfig(extractor)
err, missingHeadersFound := extractor.ExtractLogs(constants.HeaderUnchecked)
err := extractor.ExtractLogs(constants.HeaderUnchecked)
Expect(err).NotTo(HaveOccurred())
Expect(missingHeadersFound).To(BeTrue())
})
})
})

19
libraries/shared/mocks/log_delegator.go
View File

@ -24,21 +24,22 @@ type MockLogDelegator struct {
AddedTransformers []transformer.EventTransformer
DelegateCallCount int
DelegateErrors []error
LogsFound []bool
}
func (delegator *MockLogDelegator) AddTransformer(t transformer.EventTransformer) {
delegator.AddedTransformers = append(delegator.AddedTransformers, t)
}
func (delegator *MockLogDelegator) DelegateLogs() (error, bool) {
func (delegator *MockLogDelegator) DelegateLogs() error {
delegator.DelegateCallCount++
var delegateErrorThisRun error
delegateErrorThisRun, delegator.DelegateErrors = delegator.DelegateErrors[0], delegator.DelegateErrors[1:]
if delegateErrorThisRun != nil {
return delegateErrorThisRun, false
if len(delegator.DelegateErrors) > 1 {
var delegateErrorThisRun error
delegateErrorThisRun, delegator.DelegateErrors = delegator.DelegateErrors[0], delegator.DelegateErrors[1:]
return delegateErrorThisRun
} else if len(delegator.DelegateErrors) == 1 {
thisErr := delegator.DelegateErrors[0]
delegator.DelegateErrors = []error{}
return thisErr
}
var logsFoundThisRun bool
logsFoundThisRun, delegator.LogsFound = delegator.LogsFound[0], delegator.LogsFound[1:]
return nil, logsFoundThisRun
return nil
}

19
libraries/shared/mocks/log_extractor.go
View File

@ -26,7 +26,6 @@ type MockLogExtractor struct {
AddTransformerConfigError error
ExtractLogsCount int
ExtractLogsErrors []error
UncheckedHeadersExist []bool
}
func (extractor *MockLogExtractor) AddTransformerConfig(config transformer.EventTransformerConfig) error {
@ -34,14 +33,16 @@ func (extractor *MockLogExtractor) AddTransformerConfig(config transformer.Event
return extractor.AddTransformerConfigError
}
func (extractor *MockLogExtractor) ExtractLogs(recheckHeaders constants.TransformerExecution) (error, bool) {
func (extractor *MockLogExtractor) ExtractLogs(recheckHeaders constants.TransformerExecution) error {
extractor.ExtractLogsCount++
var errorThisRun error
errorThisRun, extractor.ExtractLogsErrors = extractor.ExtractLogsErrors[0], extractor.ExtractLogsErrors[1:]
if errorThisRun != nil {
return errorThisRun, false
if len(extractor.ExtractLogsErrors) > 1 {
var errorThisRun error
errorThisRun, extractor.ExtractLogsErrors = extractor.ExtractLogsErrors[0], extractor.ExtractLogsErrors[1:]
return errorThisRun
} else if len(extractor.ExtractLogsErrors) == 1 {
thisErr := extractor.ExtractLogsErrors[0]
extractor.ExtractLogsErrors = []error{}
return thisErr
}
var missingHeadersExist bool
missingHeadersExist, extractor.UncheckedHeadersExist = extractor.UncheckedHeadersExist[0], extractor.UncheckedHeadersExist[1:]
return nil, missingHeadersExist
return nil
}

32
libraries/shared/watcher/event_watcher.go
View File

@ -74,49 +74,53 @@ func (watcher *EventWatcher) AddTransformers(initializers []transformer.EventTra
}
// Extracts and delegates watched log events.
func (watcher *EventWatcher) Execute(recheckHeaders constants.TransformerExecution, errsChan chan error) {
extractErrsChan := make(chan error)
func (watcher *EventWatcher) Execute(recheckHeaders constants.TransformerExecution) error {
delegateErrsChan := make(chan error)
extractErrsChan := make(chan error)
defer close(delegateErrsChan)
defer close(extractErrsChan)
go watcher.extractLogs(recheckHeaders, extractErrsChan)
go watcher.delegateLogs(delegateErrsChan)
for {
select {
case extractErr := <-extractErrsChan:
logrus.Errorf("error extracting logs in event watcher: %s", extractErr.Error())
errsChan <- extractErr
case delegateErr := <-delegateErrsChan:
logrus.Errorf("error delegating logs in event watcher: %s", delegateErr.Error())
errsChan <- delegateErr
return delegateErr
case extractErr := <-extractErrsChan:
logrus.Errorf("error extracting logs in event watcher: %s", extractErr.Error())
return extractErr
}
}
}
func (watcher *EventWatcher) extractLogs(recheckHeaders constants.TransformerExecution, errs chan error) {
err, uncheckedHeadersFound := watcher.LogExtractor.ExtractLogs(recheckHeaders)
if err != nil {
err := watcher.LogExtractor.ExtractLogs(recheckHeaders)
if err != nil && err != logs.ErrNoUncheckedHeaders {
errs <- err
return
}
if uncheckedHeadersFound {
if err == logs.ErrNoUncheckedHeaders {
time.Sleep(NoNewDataPause)
watcher.extractLogs(recheckHeaders, errs)
} else {
time.Sleep(NoNewDataPause)
watcher.extractLogs(recheckHeaders, errs)
}
}
func (watcher *EventWatcher) delegateLogs(errs chan error) {
err, logsFound := watcher.LogDelegator.DelegateLogs()
if err != nil {
err := watcher.LogDelegator.DelegateLogs()
if err != nil && err != logs.ErrNoLogs {
errs <- err
return
}
if logsFound {
if err == logs.ErrNoLogs {
time.Sleep(NoNewDataPause)
watcher.delegateLogs(errs)
} else {
time.Sleep(NoNewDataPause)
watcher.delegateLogs(errs)
}
}

99
libraries/shared/watcher/event_watcher_test.go
View File

@ -17,6 +17,7 @@
package watcher_test
import (
"errors"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"github.com/vulcanize/vulcanizedb/libraries/shared/constants"
@ -26,6 +27,8 @@ import (
"github.com/vulcanize/vulcanizedb/pkg/fakes"
)
var errExecuteClosed = errors.New("this error means the mocks were finished executing")
var _ = Describe("Event Watcher", func() {
var (
delegator *mocks.MockLogDelegator
@ -57,7 +60,8 @@ var _ = Describe("Event Watcher", func() {
fakeTransformerTwo.FakeTransformerInitializer,
}
eventWatcher.AddTransformers(initializers)
err := eventWatcher.AddTransformers(initializers)
Expect(err).NotTo(HaveOccurred())
})
It("adds initialized transformer to log delegator", func() {
@ -78,114 +82,87 @@ var _ = Describe("Event Watcher", func() {
})
Describe("Execute", func() {
var errsChan chan error
BeforeEach(func() {
errsChan = make(chan error)
})
It("extracts watched logs", func(done Done) {
delegator.DelegateErrors = []error{nil}
delegator.LogsFound = []bool{false}
extractor.ExtractLogsErrors = []error{nil}
extractor.UncheckedHeadersExist = []bool{false}
extractor.ExtractLogsErrors = []error{nil, errExecuteClosed}
go eventWatcher.Execute(constants.HeaderUnchecked, errsChan)
err := eventWatcher.Execute(constants.HeaderUnchecked)
Eventually(func() int {
return extractor.ExtractLogsCount
}).Should(Equal(1))
Expect(err).To(MatchError(errExecuteClosed))
Eventually(func() bool {
return extractor.ExtractLogsCount > 0
}).Should(BeTrue())
close(done)
})
It("returns error if extracting logs fails", func(done Done) {
delegator.DelegateErrors = []error{nil}
delegator.LogsFound = []bool{false}
extractor.ExtractLogsErrors = []error{fakes.FakeError}
extractor.UncheckedHeadersExist = []bool{false}
go eventWatcher.Execute(constants.HeaderUnchecked, errsChan)
err := eventWatcher.Execute(constants.HeaderUnchecked)
Expect(<-errsChan).To(MatchError(fakes.FakeError))
Expect(err).To(MatchError(fakes.FakeError))
close(done)
})
It("extracts watched logs again if missing headers found", func(done Done) {
delegator.DelegateErrors = []error{nil}
delegator.LogsFound = []bool{false}
extractor.ExtractLogsErrors = []error{nil, nil}
extractor.UncheckedHeadersExist = []bool{true, false}
extractor.ExtractLogsErrors = []error{nil, errExecuteClosed}
go eventWatcher.Execute(constants.HeaderUnchecked, errsChan)
err := eventWatcher.Execute(constants.HeaderUnchecked)
Eventually(func() int {
return extractor.ExtractLogsCount
}).Should(Equal(2))
Expect(err).To(MatchError(errExecuteClosed))
Eventually(func() bool {
return extractor.ExtractLogsCount > 1
}).Should(BeTrue())
close(done)
})
It("returns error if extracting logs fails on subsequent run", func(done Done) {
delegator.DelegateErrors = []error{nil}
delegator.LogsFound = []bool{false}
extractor.ExtractLogsErrors = []error{nil, fakes.FakeError}
extractor.UncheckedHeadersExist = []bool{true, false}
go eventWatcher.Execute(constants.HeaderUnchecked, errsChan)
err := eventWatcher.Execute(constants.HeaderUnchecked)
Expect(<-errsChan).To(MatchError(fakes.FakeError))
Expect(err).To(MatchError(fakes.FakeError))
close(done)
})
It("delegates untransformed logs", func(done Done) {
delegator.DelegateErrors = []error{nil}
delegator.LogsFound = []bool{false}
extractor.ExtractLogsErrors = []error{nil}
extractor.UncheckedHeadersExist = []bool{false}
It("delegates untransformed logs", func() {
delegator.DelegateErrors = []error{nil, errExecuteClosed}
go eventWatcher.Execute(constants.HeaderUnchecked, errsChan)
err := eventWatcher.Execute(constants.HeaderUnchecked)
Eventually(func() int {
return delegator.DelegateCallCount
}).Should(Equal(1))
close(done)
Expect(err).To(MatchError(errExecuteClosed))
Eventually(func() bool {
return delegator.DelegateCallCount > 0
}).Should(BeTrue())
})
It("returns error if delegating logs fails", func(done Done) {
delegator.LogsFound = []bool{false}
delegator.DelegateErrors = []error{fakes.FakeError}
extractor.ExtractLogsErrors = []error{nil}
extractor.UncheckedHeadersExist = []bool{false}
go eventWatcher.Execute(constants.HeaderUnchecked, errsChan)
err := eventWatcher.Execute(constants.HeaderUnchecked)
Expect(<-errsChan).To(MatchError(fakes.FakeError))
Expect(err).To(MatchError(fakes.FakeError))
close(done)
})
It("delegates logs again if untransformed logs found", func(done Done) {
delegator.DelegateErrors = []error{nil, nil}
delegator.LogsFound = []bool{true, false}
extractor.ExtractLogsErrors = []error{nil}
extractor.UncheckedHeadersExist = []bool{false}
delegator.DelegateErrors = []error{nil, nil, nil, errExecuteClosed}
go eventWatcher.Execute(constants.HeaderUnchecked, errsChan)
err := eventWatcher.Execute(constants.HeaderUnchecked)
Eventually(func() int {
return delegator.DelegateCallCount
}).Should(Equal(2))
Expect(err).To(MatchError(errExecuteClosed))
Eventually(func() bool {
return delegator.DelegateCallCount > 1
}).Should(BeTrue())
close(done)
})
It("returns error if delegating logs fails on subsequent run", func(done Done) {
delegator.DelegateErrors = []error{nil, fakes.FakeError}
delegator.LogsFound = []bool{true, false}
extractor.ExtractLogsErrors = []error{nil}
extractor.UncheckedHeadersExist = []bool{false}
go eventWatcher.Execute(constants.HeaderUnchecked, errsChan)
err := eventWatcher.Execute(constants.HeaderUnchecked)
Expect(<-errsChan).To(MatchError(fakes.FakeError))
Expect(err).To(MatchError(fakes.FakeError))
close(done)
})
})