Add architecture for multiple managers
using the chain of responsibility pattern.
This commit is contained in:
Maximilian Paß
357
internal/runner/nomad_manager_test.go
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357
internal/runner/nomad_manager_test.go
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@ -0,0 +1,357 @@
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package runner
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import (
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"context"
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nomadApi "github.com/hashicorp/nomad/api"
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"github.com/openHPI/poseidon/internal/nomad"
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"github.com/openHPI/poseidon/pkg/dto"
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"github.com/openHPI/poseidon/tests"
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"github.com/sirupsen/logrus"
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"github.com/sirupsen/logrus/hooks/test"
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"github.com/stretchr/testify/mock"
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"github.com/stretchr/testify/suite"
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"testing"
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"time"
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)
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func TestGetNextRunnerTestSuite(t *testing.T) {
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suite.Run(t, new(ManagerTestSuite))
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}
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type ManagerTestSuite struct {
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suite.Suite
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apiMock *nomad.ExecutorAPIMock
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nomadRunnerManager *NomadRunnerManager
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exerciseEnvironment *ExecutionEnvironmentMock
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exerciseRunner Runner
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}
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func (s *ManagerTestSuite) SetupTest() {
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s.apiMock = &nomad.ExecutorAPIMock{}
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mockRunnerQueries(s.apiMock, []string{})
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// Instantly closed context to manually start the update process in some cases
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ctx, cancel := context.WithCancel(context.Background())
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cancel()
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s.nomadRunnerManager = NewNomadRunnerManager(s.apiMock, ctx)
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s.exerciseRunner = NewRunner(tests.DefaultRunnerID, s.nomadRunnerManager)
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s.exerciseEnvironment = &ExecutionEnvironmentMock{}
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s.setDefaultEnvironment()
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}
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func mockRunnerQueries(apiMock *nomad.ExecutorAPIMock, returnedRunnerIds []string) {
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// reset expected calls to allow new mocked return values
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apiMock.ExpectedCalls = []*mock.Call{}
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call := apiMock.On("WatchEventStream", mock.Anything, mock.Anything, mock.Anything)
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call.Run(func(args mock.Arguments) {
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<-time.After(tests.DefaultTestTimeout)
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call.ReturnArguments = mock.Arguments{nil}
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})
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apiMock.On("LoadEnvironmentJobs").Return([]*nomadApi.Job{}, nil)
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apiMock.On("MarkRunnerAsUsed", mock.AnythingOfType("string"), mock.AnythingOfType("int")).Return(nil)
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apiMock.On("LoadRunnerIDs", tests.DefaultRunnerID).Return(returnedRunnerIds, nil)
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apiMock.On("JobScale", tests.DefaultRunnerID).Return(uint(len(returnedRunnerIds)), nil)
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apiMock.On("SetJobScale", tests.DefaultRunnerID, mock.AnythingOfType("uint"), "Runner Requested").Return(nil)
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apiMock.On("RegisterRunnerJob", mock.Anything).Return(nil)
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apiMock.On("MonitorEvaluation", mock.Anything, mock.Anything).Return(nil)
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}
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func mockIdleRunners(environmentMock *ExecutionEnvironmentMock) {
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idleRunner := NewLocalRunnerStorage()
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environmentMock.On("AddRunner", mock.Anything).Run(func(args mock.Arguments) {
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r, ok := args.Get(0).(Runner)
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if !ok {
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return
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}
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idleRunner.Add(r)
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})
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sampleCall := environmentMock.On("Sample", mock.Anything)
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sampleCall.Run(func(args mock.Arguments) {
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r, ok := idleRunner.Sample()
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sampleCall.ReturnArguments = mock.Arguments{r, ok}
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})
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deleteCall := environmentMock.On("DeleteRunner", mock.AnythingOfType("string"))
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deleteCall.Run(func(args mock.Arguments) {
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id, ok := args.Get(0).(string)
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if !ok {
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return
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}
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idleRunner.Delete(id)
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})
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}
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func (s *ManagerTestSuite) setDefaultEnvironment() {
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s.exerciseEnvironment.On("ID").Return(defaultEnvironmentID)
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s.nomadRunnerManager.StoreEnvironment(s.exerciseEnvironment)
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}
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func (s *ManagerTestSuite) waitForRunnerRefresh() {
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<-time.After(100 * time.Millisecond)
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}
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func (s *ManagerTestSuite) TestSetEnvironmentAddsNewEnvironment() {
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anotherEnvironment := &ExecutionEnvironmentMock{}
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anotherEnvironment.On("ID").Return(anotherEnvironmentID)
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s.nomadRunnerManager.StoreEnvironment(anotherEnvironment)
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job, ok := s.nomadRunnerManager.environments.Get(anotherEnvironmentID)
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s.True(ok)
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s.NotNil(job)
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}
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func (s *ManagerTestSuite) TestClaimReturnsNotFoundErrorIfEnvironmentNotFound() {
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runner, err := s.nomadRunnerManager.Claim(anotherEnvironmentID, defaultInactivityTimeout)
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s.Nil(runner)
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s.Equal(ErrUnknownExecutionEnvironment, err)
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}
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func (s *ManagerTestSuite) TestClaimReturnsRunnerIfAvailable() {
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s.exerciseEnvironment.On("Sample", mock.Anything).Return(s.exerciseRunner, true)
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receivedRunner, err := s.nomadRunnerManager.Claim(defaultEnvironmentID, defaultInactivityTimeout)
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s.NoError(err)
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s.Equal(s.exerciseRunner, receivedRunner)
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}
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func (s *ManagerTestSuite) TestClaimReturnsErrorIfNoRunnerAvailable() {
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s.waitForRunnerRefresh()
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s.exerciseEnvironment.On("Sample", mock.Anything).Return(nil, false)
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runner, err := s.nomadRunnerManager.Claim(defaultEnvironmentID, defaultInactivityTimeout)
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s.Nil(runner)
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s.Equal(ErrNoRunnersAvailable, err)
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}
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func (s *ManagerTestSuite) TestClaimReturnsNoRunnerOfDifferentEnvironment() {
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s.exerciseEnvironment.On("Sample", mock.Anything).Return(s.exerciseRunner, true)
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receivedRunner, err := s.nomadRunnerManager.Claim(anotherEnvironmentID, defaultInactivityTimeout)
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s.Nil(receivedRunner)
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s.Error(err)
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}
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func (s *ManagerTestSuite) TestClaimDoesNotReturnTheSameRunnerTwice() {
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s.exerciseEnvironment.On("Sample", mock.Anything).Return(s.exerciseRunner, true).Once()
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s.exerciseEnvironment.On("Sample", mock.Anything).
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Return(NewRunner(tests.AnotherRunnerID, s.nomadRunnerManager), true).Once()
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firstReceivedRunner, err := s.nomadRunnerManager.Claim(defaultEnvironmentID, defaultInactivityTimeout)
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s.NoError(err)
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secondReceivedRunner, err := s.nomadRunnerManager.Claim(defaultEnvironmentID, defaultInactivityTimeout)
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s.NoError(err)
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s.NotEqual(firstReceivedRunner, secondReceivedRunner)
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}
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func (s *ManagerTestSuite) TestClaimAddsRunnerToUsedRunners() {
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s.exerciseEnvironment.On("Sample", mock.Anything).Return(s.exerciseRunner, true)
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receivedRunner, err := s.nomadRunnerManager.Claim(defaultEnvironmentID, defaultInactivityTimeout)
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s.Require().NoError(err)
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savedRunner, ok := s.nomadRunnerManager.usedRunners.Get(receivedRunner.ID())
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s.True(ok)
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s.Equal(savedRunner, receivedRunner)
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}
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func (s *ManagerTestSuite) TestClaimRemovesRunnerWhenMarkAsUsedFails() {
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s.exerciseEnvironment.On("Sample", mock.Anything).Return(s.exerciseRunner, true)
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s.apiMock.On("DeleteJob", mock.AnythingOfType("string")).Return(nil)
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modifyMockedCall(s.apiMock, "MarkRunnerAsUsed", func(call *mock.Call) {
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call.Run(func(args mock.Arguments) {
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call.ReturnArguments = mock.Arguments{tests.ErrDefault}
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})
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})
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claimedRunner, err := s.nomadRunnerManager.Claim(defaultEnvironmentID, defaultInactivityTimeout)
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s.Require().NoError(err)
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<-time.After(tests.ShortTimeout) // Claimed runners are marked as used asynchronously
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s.apiMock.AssertCalled(s.T(), "DeleteJob", claimedRunner.ID())
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_, ok := s.nomadRunnerManager.usedRunners.Get(claimedRunner.ID())
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s.False(ok)
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}
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func (s *ManagerTestSuite) TestGetReturnsRunnerIfRunnerIsUsed() {
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s.nomadRunnerManager.usedRunners.Add(s.exerciseRunner)
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savedRunner, err := s.nomadRunnerManager.Get(s.exerciseRunner.ID())
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s.NoError(err)
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s.Equal(savedRunner, s.exerciseRunner)
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}
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func (s *ManagerTestSuite) TestGetReturnsErrorIfRunnerNotFound() {
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savedRunner, err := s.nomadRunnerManager.Get(tests.DefaultRunnerID)
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s.Nil(savedRunner)
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s.Error(err)
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}
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func (s *ManagerTestSuite) TestReturnRemovesRunnerFromUsedRunners() {
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s.apiMock.On("DeleteJob", mock.AnythingOfType("string")).Return(nil)
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s.nomadRunnerManager.usedRunners.Add(s.exerciseRunner)
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err := s.nomadRunnerManager.Return(s.exerciseRunner)
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s.Nil(err)
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_, ok := s.nomadRunnerManager.usedRunners.Get(s.exerciseRunner.ID())
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s.False(ok)
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}
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func (s *ManagerTestSuite) TestReturnCallsDeleteRunnerApiMethod() {
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s.apiMock.On("DeleteJob", mock.AnythingOfType("string")).Return(nil)
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err := s.nomadRunnerManager.Return(s.exerciseRunner)
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s.Nil(err)
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s.apiMock.AssertCalled(s.T(), "DeleteJob", s.exerciseRunner.ID())
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}
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func (s *ManagerTestSuite) TestReturnReturnsErrorWhenApiCallFailed() {
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s.apiMock.On("DeleteJob", mock.AnythingOfType("string")).Return(tests.ErrDefault)
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err := s.nomadRunnerManager.Return(s.exerciseRunner)
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s.Error(err)
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}
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func (s *ManagerTestSuite) TestUpdateRunnersLogsErrorFromWatchAllocation() {
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var hook *test.Hook
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logger, hook := test.NewNullLogger()
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log = logger.WithField("pkg", "runner")
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modifyMockedCall(s.apiMock, "WatchEventStream", func(call *mock.Call) {
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call.Run(func(args mock.Arguments) {
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call.ReturnArguments = mock.Arguments{tests.ErrDefault}
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})
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})
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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go s.nomadRunnerManager.keepRunnersSynced(ctx)
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<-time.After(10 * time.Millisecond)
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s.Require().Equal(1, len(hook.Entries))
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s.Equal(logrus.ErrorLevel, hook.LastEntry().Level)
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s.Equal(hook.LastEntry().Data[logrus.ErrorKey], tests.ErrDefault)
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}
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func (s *ManagerTestSuite) TestUpdateRunnersAddsIdleRunner() {
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allocation := &nomadApi.Allocation{ID: tests.DefaultRunnerID}
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environment, ok := s.nomadRunnerManager.environments.Get(defaultEnvironmentID)
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s.Require().True(ok)
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allocation.JobID = environment.ID().ToString()
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mockIdleRunners(environment.(*ExecutionEnvironmentMock))
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_, ok = environment.Sample(s.apiMock)
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s.Require().False(ok)
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modifyMockedCall(s.apiMock, "WatchEventStream", func(call *mock.Call) {
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call.Run(func(args mock.Arguments) {
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onCreate, ok := args.Get(1).(nomad.AllocationProcessor)
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s.Require().True(ok)
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onCreate(allocation)
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call.ReturnArguments = mock.Arguments{nil}
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})
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})
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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go s.nomadRunnerManager.keepRunnersSynced(ctx)
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<-time.After(10 * time.Millisecond)
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_, ok = environment.Sample(s.apiMock)
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s.True(ok)
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}
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func (s *ManagerTestSuite) TestUpdateRunnersRemovesIdleAndUsedRunner() {
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allocation := &nomadApi.Allocation{JobID: tests.DefaultRunnerID}
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environment, ok := s.nomadRunnerManager.environments.Get(defaultEnvironmentID)
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s.Require().True(ok)
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mockIdleRunners(environment.(*ExecutionEnvironmentMock))
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testRunner := NewRunner(allocation.JobID, s.nomadRunnerManager)
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environment.AddRunner(testRunner)
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s.nomadRunnerManager.usedRunners.Add(testRunner)
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modifyMockedCall(s.apiMock, "WatchEventStream", func(call *mock.Call) {
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call.Run(func(args mock.Arguments) {
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onDelete, ok := args.Get(2).(nomad.AllocationProcessor)
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s.Require().True(ok)
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onDelete(allocation)
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call.ReturnArguments = mock.Arguments{nil}
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})
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})
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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go s.nomadRunnerManager.keepRunnersSynced(ctx)
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<-time.After(10 * time.Millisecond)
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_, ok = environment.Sample(s.apiMock)
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s.False(ok)
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_, ok = s.nomadRunnerManager.usedRunners.Get(allocation.JobID)
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s.False(ok)
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}
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func modifyMockedCall(apiMock *nomad.ExecutorAPIMock, method string, modifier func(call *mock.Call)) {
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for _, c := range apiMock.ExpectedCalls {
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if c.Method == method {
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modifier(c)
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}
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}
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}
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func (s *ManagerTestSuite) TestOnAllocationAdded() {
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s.Run("does not add environment template id job", func() {
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environment, ok := s.nomadRunnerManager.environments.Get(tests.DefaultEnvironmentIDAsInteger)
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s.True(ok)
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mockIdleRunners(environment.(*ExecutionEnvironmentMock))
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alloc := &nomadApi.Allocation{JobID: nomad.TemplateJobID(tests.DefaultEnvironmentIDAsInteger)}
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s.nomadRunnerManager.onAllocationAdded(alloc)
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_, ok = environment.Sample(s.apiMock)
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s.False(ok)
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})
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s.Run("does not panic when environment id cannot be parsed", func() {
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alloc := &nomadApi.Allocation{JobID: ""}
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s.NotPanics(func() {
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s.nomadRunnerManager.onAllocationAdded(alloc)
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})
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})
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s.Run("does not panic when environment does not exist", func() {
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nonExistentEnvironment := dto.EnvironmentID(1234)
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_, ok := s.nomadRunnerManager.environments.Get(nonExistentEnvironment)
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s.Require().False(ok)
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alloc := &nomadApi.Allocation{JobID: nomad.RunnerJobID(nonExistentEnvironment, "1-1-1-1")}
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s.NotPanics(func() {
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s.nomadRunnerManager.onAllocationAdded(alloc)
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})
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})
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s.Run("adds correct job", func() {
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s.Run("without allocated resources", func() {
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environment, ok := s.nomadRunnerManager.environments.Get(tests.DefaultEnvironmentIDAsInteger)
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s.True(ok)
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mockIdleRunners(environment.(*ExecutionEnvironmentMock))
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alloc := &nomadApi.Allocation{
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JobID: tests.DefaultRunnerID,
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AllocatedResources: nil,
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}
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s.nomadRunnerManager.onAllocationAdded(alloc)
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runner, ok := environment.Sample(s.apiMock)
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s.True(ok)
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nomadJob, ok := runner.(*NomadJob)
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s.True(ok)
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s.Equal(nomadJob.id, tests.DefaultRunnerID)
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s.Empty(nomadJob.portMappings)
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})
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s.Run("with mapped ports", func() {
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environment, ok := s.nomadRunnerManager.environments.Get(tests.DefaultEnvironmentIDAsInteger)
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s.True(ok)
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mockIdleRunners(environment.(*ExecutionEnvironmentMock))
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alloc := &nomadApi.Allocation{
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JobID: tests.DefaultRunnerID,
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AllocatedResources: &nomadApi.AllocatedResources{
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Shared: nomadApi.AllocatedSharedResources{Ports: tests.DefaultPortMappings},
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},
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}
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s.nomadRunnerManager.onAllocationAdded(alloc)
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runner, ok := environment.Sample(s.apiMock)
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s.True(ok)
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nomadJob, ok := runner.(*NomadJob)
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s.True(ok)
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s.Equal(nomadJob.id, tests.DefaultRunnerID)
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s.Equal(nomadJob.portMappings, tests.DefaultPortMappings)
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})
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})
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}
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