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registry_test.go
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registry_test.go
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/*
Copyright 2015 The Kubernetes Authors All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package podtask
import (
"testing"
"time"
mesos "github.com/mesos/mesos-go/mesosproto"
"github.com/mesos/mesos-go/mesosutil"
"github.com/stretchr/testify/assert"
"k8s.io/kubernetes/contrib/mesos/pkg/offers"
"k8s.io/kubernetes/contrib/mesos/pkg/proc"
)
func TestInMemoryRegistry_RegisterGetUnregister(t *testing.T) {
assert := assert.New(t)
registry := NewInMemoryRegistry()
// it's empty at the beginning
tasks := registry.List(func(t *T) bool { return true })
assert.Empty(tasks)
// add a task
a, _ := fakePodTask("a")
a_clone, err := registry.Register(a)
assert.NoError(err)
assert.Equal(a_clone.ID, a.ID)
assert.Equal(a_clone.podKey, a.podKey)
// add another task
b, _ := fakePodTask("b")
b_clone, err := registry.Register(b)
assert.NoError(err)
assert.Equal(b_clone.ID, b.ID)
assert.Equal(b_clone.podKey, b.podKey)
// find tasks in the registry
tasks = registry.List(func(t *T) bool { return true })
assert.Len(tasks, 2)
assert.Contains(tasks, a_clone)
assert.Contains(tasks, b_clone)
tasks = registry.List(func(t *T) bool { return t.ID == a.ID })
assert.Len(tasks, 1)
assert.Contains(tasks, a_clone)
task, _ := registry.ForPod(a.podKey)
assert.NotNil(task)
assert.Equal(task.ID, a.ID)
task, _ = registry.ForPod(b.podKey)
assert.NotNil(task)
assert.Equal(task.ID, b.ID)
task, _ = registry.ForPod("no-pod-key")
assert.Nil(task)
task, _ = registry.Get(a.ID)
assert.NotNil(task)
assert.Equal(task.ID, a.ID)
task, _ = registry.Get("unknown-task-id")
assert.Nil(task)
// re-add a task
a_clone, err = registry.Register(a)
assert.Error(err)
assert.Nil(a_clone)
// re-add a task with another podKey, but same task id
another_a := a.Clone()
another_a.podKey = "another-pod"
another_a_clone, err := registry.Register(another_a)
assert.Error(err)
assert.Nil(another_a_clone)
// re-add a task with another task ID, but same podKey
another_b := b.Clone()
another_b.ID = "another-task-id"
another_b_clone, err := registry.Register(another_b)
assert.Error(err)
assert.Nil(another_b_clone)
// unregister a task
registry.Unregister(b)
tasks = registry.List(func(t *T) bool { return true })
assert.Len(tasks, 1)
assert.Contains(tasks, a)
// unregister a task not registered
unregistered_task, _ := fakePodTask("unregistered-task")
registry.Unregister(unregistered_task)
}
func fakeStatusUpdate(taskId string, state mesos.TaskState) *mesos.TaskStatus {
status := mesosutil.NewTaskStatus(mesosutil.NewTaskID(taskId), state)
status.Data = []byte("{}") // empty json
masterSource := mesos.TaskStatus_SOURCE_MASTER
status.Source = &masterSource
return status
}
func TestInMemoryRegistry_State(t *testing.T) {
assert := assert.New(t)
registry := NewInMemoryRegistry()
// add a task
a, _ := fakePodTask("a")
a_clone, err := registry.Register(a)
assert.NoError(err)
assert.Equal(a.State, a_clone.State)
// update the status
assert.Equal(a_clone.State, StatePending)
a_clone, state := registry.UpdateStatus(fakeStatusUpdate(a.ID, mesos.TaskState_TASK_RUNNING))
assert.Equal(state, StatePending) // old state
assert.Equal(a_clone.State, StateRunning) // new state
// update unknown task
unknown_clone, state := registry.UpdateStatus(fakeStatusUpdate("unknown-task-id", mesos.TaskState_TASK_RUNNING))
assert.Nil(unknown_clone)
assert.Equal(state, StateUnknown)
}
func TestInMemoryRegistry_Update(t *testing.T) {
assert := assert.New(t)
// create offers registry
ttl := time.Second / 4
config := offers.RegistryConfig{
DeclineOffer: func(offerId string) <-chan error {
return proc.ErrorChan(nil)
},
Compat: func(o *mesos.Offer) bool {
return true
},
TTL: ttl,
LingerTTL: 2 * ttl,
}
storage := offers.CreateRegistry(config)
// Add offer
offerId := mesosutil.NewOfferID("foo")
mesosOffer := &mesos.Offer{Id: offerId}
storage.Add([]*mesos.Offer{mesosOffer})
offer, ok := storage.Get(offerId.GetValue())
assert.True(ok)
// create registry
registry := NewInMemoryRegistry()
a, _ := fakePodTask("a")
registry.Register(a.Clone()) // here clone a because we change it below
// state changes are ignored
a.State = StateRunning
err := registry.Update(a)
assert.NoError(err)
a_clone, _ := registry.Get(a.ID)
assert.Equal(StatePending, a_clone.State)
// offer is updated while pending
a.Offer = offer
err = registry.Update(a)
assert.NoError(err)
a_clone, _ = registry.Get(a.ID)
assert.Equal(offer.Id(), a_clone.Offer.Id())
// spec is updated while pending
a.Spec = Spec{SlaveID: "slave-1"}
err = registry.Update(a)
assert.NoError(err)
a_clone, _ = registry.Get(a.ID)
assert.Equal("slave-1", a_clone.Spec.SlaveID)
// flags are updated while pending
a.Flags[Launched] = struct{}{}
err = registry.Update(a)
assert.NoError(err)
a_clone, _ = registry.Get(a.ID)
_, found_launched := a_clone.Flags[Launched]
assert.True(found_launched)
// flags are updated while running
registry.UpdateStatus(fakeStatusUpdate(a.ID, mesos.TaskState_TASK_RUNNING))
a.Flags[Bound] = struct{}{}
err = registry.Update(a)
assert.NoError(err)
a_clone, _ = registry.Get(a.ID)
_, found_launched = a_clone.Flags[Launched]
assert.True(found_launched)
_, found_bound := a_clone.Flags[Bound]
assert.True(found_bound)
// spec is ignored while running
a.Spec = Spec{SlaveID: "slave-2"}
err = registry.Update(a)
assert.NoError(err)
a_clone, _ = registry.Get(a.ID)
assert.Equal("slave-1", a_clone.Spec.SlaveID)
// error when finished
registry.UpdateStatus(fakeStatusUpdate(a.ID, mesos.TaskState_TASK_FINISHED))
err = registry.Update(a)
assert.Error(err)
// update unknown task
unknown_task, _ := fakePodTask("unknown-task")
err = registry.Update(unknown_task)
assert.Error(err)
// update nil task
err = registry.Update(nil)
assert.Nil(err)
}
type transition struct {
statusUpdate mesos.TaskState
expectedState *StateType
expectPanic bool
}
func NewTransition(statusUpdate mesos.TaskState, expectedState StateType) transition {
return transition{statusUpdate: statusUpdate, expectedState: &expectedState, expectPanic: false}
}
func NewTransitionToDeletedTask(statusUpdate mesos.TaskState) transition {
return transition{statusUpdate: statusUpdate, expectedState: nil, expectPanic: false}
}
func NewTransitionWhichPanics(statusUpdate mesos.TaskState) transition {
return transition{statusUpdate: statusUpdate, expectPanic: true}
}
func testStateTrace(t *testing.T, transitions []transition) *Registry {
assert := assert.New(t)
registry := NewInMemoryRegistry()
a, _ := fakePodTask("a")
a, _ = registry.Register(a)
// initial pending state
assert.Equal(a.State, StatePending)
for _, transition := range transitions {
if transition.expectPanic {
assert.Panics(func() {
registry.UpdateStatus(fakeStatusUpdate(a.ID, transition.statusUpdate))
})
} else {
a, _ = registry.UpdateStatus(fakeStatusUpdate(a.ID, transition.statusUpdate))
if transition.expectedState == nil {
a, _ = registry.Get(a.ID)
assert.Nil(a, "expected task to be deleted from registry after status update to %v", transition.statusUpdate)
} else {
assert.Equal(a.State, *transition.expectedState)
}
}
}
return ®istry
}
func TestInMemoryRegistry_TaskLifeCycle(t *testing.T) {
testStateTrace(t, []transition{
NewTransition(mesos.TaskState_TASK_STAGING, StatePending),
NewTransition(mesos.TaskState_TASK_STARTING, StatePending),
NewTransitionWhichPanics(mesos.TaskState_TASK_FINISHED),
NewTransition(mesos.TaskState_TASK_RUNNING, StateRunning),
NewTransition(mesos.TaskState_TASK_RUNNING, StateRunning),
NewTransition(mesos.TaskState_TASK_STARTING, StateRunning),
NewTransition(mesos.TaskState_TASK_FINISHED, StateFinished),
NewTransition(mesos.TaskState_TASK_FINISHED, StateFinished),
NewTransition(mesos.TaskState_TASK_RUNNING, StateFinished),
})
}
func TestInMemoryRegistry_NotFinished(t *testing.T) {
// all these behave the same
notFinishedStates := []mesos.TaskState{
mesos.TaskState_TASK_ERROR,
mesos.TaskState_TASK_FAILED,
mesos.TaskState_TASK_KILLED,
mesos.TaskState_TASK_LOST,
}
for _, notFinishedState := range notFinishedStates {
testStateTrace(t, []transition{
NewTransitionToDeletedTask(notFinishedState),
})
testStateTrace(t, []transition{
NewTransition(mesos.TaskState_TASK_RUNNING, StateRunning),
NewTransitionToDeletedTask(notFinishedState),
})
testStateTrace(t, []transition{
NewTransition(mesos.TaskState_TASK_RUNNING, StateRunning),
NewTransition(mesos.TaskState_TASK_FINISHED, StateFinished),
NewTransition(notFinishedState, StateFinished),
})
}
}