mirror of https://github.com/k3s-io/k3s
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
133 lines
3.2 KiB
133 lines
3.2 KiB
/*
|
|
Copyright (c) 2015 VMware, Inc. 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 task
|
|
|
|
import (
|
|
"context"
|
|
|
|
"github.com/vmware/govmomi/property"
|
|
"github.com/vmware/govmomi/vim25/progress"
|
|
"github.com/vmware/govmomi/vim25/types"
|
|
)
|
|
|
|
type taskProgress struct {
|
|
info *types.TaskInfo
|
|
}
|
|
|
|
func (t taskProgress) Percentage() float32 {
|
|
return float32(t.info.Progress)
|
|
}
|
|
|
|
func (t taskProgress) Detail() string {
|
|
return ""
|
|
}
|
|
|
|
func (t taskProgress) Error() error {
|
|
if t.info.Error != nil {
|
|
return Error{t.info.Error}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
type taskCallback struct {
|
|
ch chan<- progress.Report
|
|
info *types.TaskInfo
|
|
err error
|
|
}
|
|
|
|
func (t *taskCallback) fn(pc []types.PropertyChange) bool {
|
|
for _, c := range pc {
|
|
if c.Name != "info" {
|
|
continue
|
|
}
|
|
|
|
if c.Op != types.PropertyChangeOpAssign {
|
|
continue
|
|
}
|
|
|
|
if c.Val == nil {
|
|
continue
|
|
}
|
|
|
|
ti := c.Val.(types.TaskInfo)
|
|
t.info = &ti
|
|
}
|
|
|
|
// t.info could be nil if pc can't satify the rules above
|
|
if t.info == nil {
|
|
return false
|
|
}
|
|
|
|
pr := taskProgress{t.info}
|
|
|
|
// Store copy of error, so Wait() can return it as well.
|
|
t.err = pr.Error()
|
|
|
|
switch t.info.State {
|
|
case types.TaskInfoStateQueued, types.TaskInfoStateRunning:
|
|
if t.ch != nil {
|
|
// Don't care if this is dropped
|
|
select {
|
|
case t.ch <- pr:
|
|
default:
|
|
}
|
|
}
|
|
return false
|
|
case types.TaskInfoStateSuccess, types.TaskInfoStateError:
|
|
if t.ch != nil {
|
|
// Last one must always be delivered
|
|
t.ch <- pr
|
|
}
|
|
return true
|
|
default:
|
|
panic("unknown state: " + t.info.State)
|
|
}
|
|
}
|
|
|
|
// Wait waits for a task to finish with either success or failure. It does so
|
|
// by waiting for the "info" property of task managed object to change. The
|
|
// function returns when it finds the task in the "success" or "error" state.
|
|
// In the former case, the return value is nil. In the latter case the return
|
|
// value is an instance of this package's Error struct.
|
|
//
|
|
// Any error returned while waiting for property changes causes the function to
|
|
// return immediately and propagate the error.
|
|
//
|
|
// If the progress.Sinker argument is specified, any progress updates for the
|
|
// task are sent here. The completion percentage is passed through directly.
|
|
// The detail for the progress update is set to an empty string. If the task
|
|
// finishes in the error state, the error instance is passed through as well.
|
|
// Note that this error is the same error that is returned by this function.
|
|
//
|
|
func Wait(ctx context.Context, ref types.ManagedObjectReference, pc *property.Collector, s progress.Sinker) (*types.TaskInfo, error) {
|
|
cb := &taskCallback{}
|
|
|
|
// Include progress sink if specified
|
|
if s != nil {
|
|
cb.ch = s.Sink()
|
|
defer close(cb.ch)
|
|
}
|
|
|
|
err := property.Wait(ctx, pc, ref, []string{"info"}, cb.fn)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return cb.info, cb.err
|
|
}
|