Golang Allocation.Job方法代码示例

// inplaceUpdate attempts to update allocations in-place where possible.
func inplaceUpdate(ctx Context, eval *structs.Evaluation, job *structs.Job,
	stack Stack, updates []allocTuple) []allocTuple {

	n := len(updates)
	inplace := 0
	for i := 0; i < n; i++ {
		// Get the update
		update := updates[i]

		// Check if the task drivers or config has changed, requires
		// a rolling upgrade since that cannot be done in-place.
		existing := update.Alloc.Job.LookupTaskGroup(update.TaskGroup.Name)
		if tasksUpdated(update.TaskGroup, existing) {
			continue
		}

		// Get the existing node
		node, err := ctx.State().NodeByID(update.Alloc.NodeID)
		if err != nil {
			ctx.Logger().Printf("[ERR] sched: %#v failed to get node '%s': %v",
				eval, update.Alloc.NodeID, err)
			continue
		}
		if node == nil {
			continue
		}

		// Set the existing node as the base set
		stack.SetNodes([]*structs.Node{node})

		// Stage an eviction of the current allocation. This is done so that
		// the current allocation is discounted when checking for feasability.
		// Otherwise we would be trying to fit the tasks current resources and
		// updated resources. After select is called we can remove the evict.
		ctx.Plan().AppendUpdate(update.Alloc, structs.AllocDesiredStatusStop,
			allocInPlace)

		// Attempt to match the task group
		option, size := stack.Select(update.TaskGroup)

		// Pop the allocation
		ctx.Plan().PopUpdate(update.Alloc)

		// Skip if we could not do an in-place update
		if option == nil {
			continue
		}

		// Restore the network offers from the existing allocation.
		// We do not allow network resources (reserved/dynamic ports)
		// to be updated. This is guarded in taskUpdated, so we can
		// safely restore those here.
		for task, resources := range option.TaskResources {
			existing := update.Alloc.TaskResources[task]
			resources.Networks = existing.Networks
		}

		// Create a shallow copy
		newAlloc := new(structs.Allocation)
		*newAlloc = *update.Alloc

		// Update the allocation
		newAlloc.EvalID = eval.ID
		newAlloc.Job = job
		newAlloc.Resources = size
		newAlloc.TaskResources = option.TaskResources
		newAlloc.Metrics = ctx.Metrics()
		newAlloc.DesiredStatus = structs.AllocDesiredStatusRun
		newAlloc.ClientStatus = structs.AllocClientStatusPending
		ctx.Plan().AppendAlloc(newAlloc)

		// Remove this allocation from the slice
		updates[i] = updates[n-1]
		i--
		n--
		inplace++
	}
	if len(updates) > 0 {
		ctx.Logger().Printf("[DEBUG] sched: %#v: %d in-place updates of %d", eval, inplace, len(updates))
	}
	return updates[:n]
}

func TestPlanApply_applyPlan(t *testing.T) {
	s1 := testServer(t, nil)
	defer s1.Shutdown()
	testutil.WaitForLeader(t, s1.RPC)

	// Register ndoe
	node := mock.Node()
	testRegisterNode(t, s1, node)

	// Register alloc
	alloc := mock.Alloc()
	allocFail := mock.Alloc()
	plan := &structs.PlanResult{
		NodeAllocation: map[string][]*structs.Allocation{
			node.ID: []*structs.Allocation{alloc},
		},
		FailedAllocs: []*structs.Allocation{allocFail},
	}

	// Snapshot the state
	snap, err := s1.State().Snapshot()
	if err != nil {
		t.Fatalf("err: %v", err)
	}

	// Apply the plan
	future, err := s1.applyPlan(alloc.Job, plan, snap)
	if err != nil {
		t.Fatalf("err: %v", err)
	}

	// Verify our optimistic snapshot is updated
	if out, err := snap.AllocByID(alloc.ID); err != nil || out == nil {
		t.Fatalf("bad: %v %v", out, err)
	}

	// Check plan does apply cleanly
	index, err := planWaitFuture(future)
	if err != nil {
		t.Fatalf("err: %v", err)
	}
	if index == 0 {
		t.Fatalf("bad: %d", index)
	}

	// Lookup the allocation
	out, err := s1.fsm.State().AllocByID(alloc.ID)
	if err != nil {
		t.Fatalf("err: %v", err)
	}
	if out == nil {
		t.Fatalf("missing alloc")
	}

	// Lookup the allocation
	out, err = s1.fsm.State().AllocByID(allocFail.ID)
	if err != nil {
		t.Fatalf("err: %v", err)
	}
	if out == nil {
		t.Fatalf("missing alloc")
	}

	// Evict alloc, Register alloc2
	allocEvict := new(structs.Allocation)
	*allocEvict = *alloc
	allocEvict.DesiredStatus = structs.AllocDesiredStatusEvict
	job := allocEvict.Job
	allocEvict.Job = nil
	alloc2 := mock.Alloc()
	alloc2.Job = nil
	plan = &structs.PlanResult{
		NodeUpdate: map[string][]*structs.Allocation{
			node.ID: []*structs.Allocation{allocEvict},
		},
		NodeAllocation: map[string][]*structs.Allocation{
			node.ID: []*structs.Allocation{alloc2},
		},
	}

	// Snapshot the state
	snap, err = s1.State().Snapshot()
	if err != nil {
		t.Fatalf("err: %v", err)
	}

	// Apply the plan
	future, err = s1.applyPlan(job, plan, snap)
	if err != nil {
		t.Fatalf("err: %v", err)
	}

	// Check that our optimistic view is updated
	if out, _ := snap.AllocByID(allocEvict.ID); out.DesiredStatus != structs.AllocDesiredStatusEvict {
		t.Fatalf("bad: %#v", out)
	}

	// Verify plan applies cleanly
	index, err = planWaitFuture(future)
	if err != nil {
//.........这里部分代码省略.........

func TestFSM_UpsertAllocs_SharedJob(t *testing.T) {
	fsm := testFSM(t)

	alloc := mock.Alloc()
	fsm.State().UpsertJobSummary(1, mock.JobSummary(alloc.JobID))
	job := alloc.Job
	alloc.Job = nil
	req := structs.AllocUpdateRequest{
		Job:   job,
		Alloc: []*structs.Allocation{alloc},
	}
	buf, err := structs.Encode(structs.AllocUpdateRequestType, req)
	if err != nil {
		t.Fatalf("err: %v", err)
	}

	resp := fsm.Apply(makeLog(buf))
	if resp != nil {
		t.Fatalf("resp: %v", resp)
	}

	// Verify we are registered
	out, err := fsm.State().AllocByID(alloc.ID)
	if err != nil {
		t.Fatalf("err: %v", err)
	}
	alloc.CreateIndex = out.CreateIndex
	alloc.ModifyIndex = out.ModifyIndex
	alloc.AllocModifyIndex = out.AllocModifyIndex

	// Job should be re-attached
	alloc.Job = job
	if !reflect.DeepEqual(alloc, out) {
		t.Fatalf("bad: %#v %#v", alloc, out)
	}

	// Ensure that the original job is used
	evictAlloc := new(structs.Allocation)
	*evictAlloc = *alloc
	job = mock.Job()
	job.Priority = 123

	evictAlloc.Job = nil
	evictAlloc.DesiredStatus = structs.AllocDesiredStatusEvict
	req2 := structs.AllocUpdateRequest{
		Job:   job,
		Alloc: []*structs.Allocation{evictAlloc},
	}
	buf, err = structs.Encode(structs.AllocUpdateRequestType, req2)
	if err != nil {
		t.Fatalf("err: %v", err)
	}

	resp = fsm.Apply(makeLog(buf))
	if resp != nil {
		t.Fatalf("resp: %v", resp)
	}

	// Verify we are evicted
	out, err = fsm.State().AllocByID(alloc.ID)
	if err != nil {
		t.Fatalf("err: %v", err)
	}
	if out.DesiredStatus != structs.AllocDesiredStatusEvict {
		t.Fatalf("alloc found!")
	}
	if out.Job == nil || out.Job.Priority == 123 {
		t.Fatalf("bad job")
	}
}