func init() {
Describe("asyncTaskService", func() {
var (
uuidGen *fakeuuid.FakeGenerator
service Service
)
BeforeEach(func() {
uuidGen = &fakeuuid.FakeGenerator{}
service = NewAsyncTaskService(uuidGen, boshlog.NewLogger(boshlog.LevelNone))
})
Describe("StartTask", func() {
startAndWaitForTaskCompletion := func(task Task) Task {
service.StartTask(task)
for task.State == StateRunning {
time.Sleep(time.Nanosecond)
task, _ = service.FindTaskWithID(task.ID)
}
return task
}
It("sets return value on a successful task", func() {
runFunc := func() (interface{}, error) { return 123, nil }
task, err := service.CreateTask(runFunc, nil, nil)
Expect(err).ToNot(HaveOccurred())
task = startAndWaitForTaskCompletion(task)
Expect(task.State).To(BeEquivalentTo(StateDone))
Expect(task.Value).To(Equal(123))
Expect(task.Error).To(BeNil())
})
It("sets task error on a failing task", func() {
err := errors.New("fake-error")
runFunc := func() (interface{}, error) { return nil, err }
task, createErr := service.CreateTask(runFunc, nil, nil)
Expect(createErr).ToNot(HaveOccurred())
task = startAndWaitForTaskCompletion(task)
Expect(task.State).To(BeEquivalentTo(StateFailed))
Expect(task.Value).To(BeNil())
Expect(task.Error).To(Equal(err))
})
Describe("CreateTask", func() {
It("can run task created with CreateTask which does not have end func", func() {
ranFunc := false
runFunc := func() (interface{}, error) { ranFunc = true; return nil, nil }
task, err := service.CreateTask(runFunc, nil, nil)
Expect(err).ToNot(HaveOccurred())
startAndWaitForTaskCompletion(task)
Expect(ranFunc).To(BeTrue())
})
It("can run task created with CreateTask which has end func", func() {
ranFunc := false
runFunc := func() (interface{}, error) { ranFunc = true; return nil, nil }
ranEndFunc := false
endFunc := func(Task) { ranEndFunc = true }
task, err := service.CreateTask(runFunc, nil, endFunc)
Expect(err).ToNot(HaveOccurred())
startAndWaitForTaskCompletion(task)
Expect(ranFunc).To(BeTrue())
Expect(ranEndFunc).To(BeTrue())
})
It("returns an error if generate uuid fails", func() {
uuidGen.GenerateError = errors.New("fake-generate-uuid-error")
_, err := service.CreateTask(nil, nil, nil)
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("fake-generate-uuid-error"))
})
})
Describe("CreateTaskWithID", func() {
It("can run task created with CreateTaskWithID which does not have end func", func() {
ranFunc := false
runFunc := func() (interface{}, error) { ranFunc = true; return nil, nil }
task := service.CreateTaskWithID("fake-task-id", runFunc, nil, nil)
startAndWaitForTaskCompletion(task)
Expect(ranFunc).To(BeTrue())
})
It("can run task created with CreateTaskWithID which has end func", func() {
ranFunc := false
runFunc := func() (interface{}, error) { ranFunc = true; return nil, nil }
ranEndFunc := false
endFunc := func(Task) { ranEndFunc = true }
task := service.CreateTaskWithID("fake-task-id", runFunc, nil, endFunc)
startAndWaitForTaskCompletion(task)
Expect(ranFunc).To(BeTrue())
Expect(ranEndFunc).To(BeTrue())
})
})
It("can process many tasks simultaneously", func() {
taskFunc := func() (interface{}, error) {
time.Sleep(10 * time.Millisecond)
return nil, nil
}
ids := []string{}
for id := 1; id < 200; id++ {
idStr := fmt.Sprintf("%d", id)
uuidGen.GeneratedUUID = idStr
ids = append(ids, idStr)
task, err := service.CreateTask(taskFunc, nil, nil)
Expect(err).ToNot(HaveOccurred())
go service.StartTask(task)
}
for {
allDone := true
for _, id := range ids {
task, _ := service.FindTaskWithID(id)
if task.State != StateDone {
allDone = false
break
}
}
if allDone {
break
}
time.Sleep(200 * time.Millisecond)
}
})
})
Describe("CreateTask", func() {
It("creates a task with auto-assigned id", func() {
uuidGen.GeneratedUUID = "fake-uuid"
runFuncCalled := false
runFunc := func() (interface{}, error) {
runFuncCalled = true
return nil, nil
}
cancelFuncCalled := false
cancelFunc := func(_ Task) error {
cancelFuncCalled = true
return nil
}
endFuncCalled := false
endFunc := func(_ Task) {
endFuncCalled = true
}
task, err := service.CreateTask(runFunc, cancelFunc, endFunc)
Expect(err).ToNot(HaveOccurred())
Expect(task.ID).To(Equal("fake-uuid"))
Expect(task.State).To(Equal(StateRunning))
task.Func()
Expect(runFuncCalled).To(BeTrue())
task.CancelFunc(task)
Expect(cancelFuncCalled).To(BeTrue())
task.EndFunc(task)
Expect(endFuncCalled).To(BeTrue())
})
})
Describe("CreateTaskWithID", func() {
It("creates a task with given id", func() {
runFuncCalled := false
runFunc := func() (interface{}, error) {
runFuncCalled = true
return nil, nil
}
cancelFuncCalled := false
cancelFunc := func(_ Task) error {
cancelFuncCalled = true
return nil
}
endFuncCalled := false
endFunc := func(_ Task) {
endFuncCalled = true
}
task := service.CreateTaskWithID("fake-task-id", runFunc, cancelFunc, endFunc)
Expect(task.ID).To(Equal("fake-task-id"))
Expect(task.State).To(Equal(StateRunning))
task.Func()
Expect(runFuncCalled).To(BeTrue())
task.CancelFunc(task)
Expect(cancelFuncCalled).To(BeTrue())
task.EndFunc(task)
Expect(endFuncCalled).To(BeTrue())
})
})
})
}
blobID, fingerprint, err := blobstore.Create("/fake-file.txt")
Expect(err).ToNot(HaveOccurred())
Expect(blobID).To(Equal("some-uuid"))
Expect(fingerprint).To(BeEmpty())
dirStats := fs.GetFileTestStat(fakeBlobstorePath)
Expect(dirStats).ToNot(BeNil())
Expect(dirStats.FileMode).To(Equal(os.FileMode(0770)))
writtenFileStats := fs.GetFileTestStat(fakeBlobstorePath + "/some-uuid")
Expect(writtenFileStats).ToNot(BeNil())
Expect("fake-file-contents").To(Equal(writtenFileStats.StringContents()))
})
It("errs when generating blob id errs", func() {
uuidGen.GenerateError = errors.New("some-unfortunate-error")
_, _, err := blobstore.Create("some/file")
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("some-unfortunate-error"))
})
It("errs when mkdir errs", func() {
fs.MkdirAllError = errors.New("fake-mkdir-error")
_, _, err := blobstore.Create("/fake-file.txt")
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("fake-mkdir-error"))
})
It("errs when copy file errs", func() {