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6fe2703665
* Remove `make updatedeps` from Travis build. We'll follow up with more specific plans around dependency updating in subsequent PRs. * Update all `make` targets to set `GO15VENDOREXPERIMENT=1` and to filter out `/vendor/` from `./...` where appropriate. * Temporarily remove `vet` from the `make test` target until we can figure out how to get it to not vet `vendor/`. (Initial experimentation failed to yield the proper incantation.) Everything is pinned to current master, with the exception of: * Azure/azure-sdk-for-go which is pinned before the breaking change today * aws/aws-sdk-go which is pinned to the most recent tag The documentation still needs to be updated, which we can do in a follow up PR. The goal here is to unblock release.
127 lines
3.1 KiB
Go
127 lines
3.1 KiB
Go
/*
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Copyright (c) 2015 VMware, Inc. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package task
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import (
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"github.com/vmware/govmomi/property"
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"github.com/vmware/govmomi/vim25/progress"
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"github.com/vmware/govmomi/vim25/types"
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"golang.org/x/net/context"
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)
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type taskProgress struct {
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info *types.TaskInfo
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}
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func (t taskProgress) Percentage() float32 {
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return float32(t.info.Progress)
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}
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func (t taskProgress) Detail() string {
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return ""
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}
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func (t taskProgress) Error() error {
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if t.info.Error != nil {
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return Error{t.info.Error}
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}
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return nil
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}
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type taskCallback struct {
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ch chan<- progress.Report
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info *types.TaskInfo
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err error
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}
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func (t *taskCallback) fn(pc []types.PropertyChange) bool {
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for _, c := range pc {
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if c.Name != "info" {
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continue
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}
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if c.Op != types.PropertyChangeOpAssign {
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continue
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}
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if c.Val == nil {
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continue
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}
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ti := c.Val.(types.TaskInfo)
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t.info = &ti
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}
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pr := taskProgress{t.info}
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// Store copy of error, so Wait() can return it as well.
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t.err = pr.Error()
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switch t.info.State {
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case types.TaskInfoStateQueued, types.TaskInfoStateRunning:
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if t.ch != nil {
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// Don't care if this is dropped
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select {
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case t.ch <- pr:
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default:
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}
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}
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return false
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case types.TaskInfoStateSuccess, types.TaskInfoStateError:
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if t.ch != nil {
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// Last one must always be delivered
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t.ch <- pr
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}
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return true
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default:
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panic("unknown state: " + t.info.State)
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}
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}
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// Wait waits for a task to finish with either success or failure. It does so
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// by waiting for the "info" property of task managed object to change. The
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// function returns when it finds the task in the "success" or "error" state.
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// In the former case, the return value is nil. In the latter case the return
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// value is an instance of this package's Error struct.
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//
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// Any error returned while waiting for property changes causes the function to
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// return immediately and propagate the error.
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//
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// If the progress.Sinker argument is specified, any progress updates for the
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// task are sent here. The completion percentage is passed through directly.
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// The detail for the progress update is set to an empty string. If the task
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// finishes in the error state, the error instance is passed through as well.
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// Note that this error is the same error that is returned by this function.
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//
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func Wait(ctx context.Context, ref types.ManagedObjectReference, pc *property.Collector, s progress.Sinker) (*types.TaskInfo, error) {
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cb := &taskCallback{}
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// Include progress sink if specified
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if s != nil {
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cb.ch = s.Sink()
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defer close(cb.ch)
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}
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err := property.Wait(ctx, pc, ref, []string{"info"}, cb.fn)
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if err != nil {
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return nil, err
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}
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return cb.info, cb.err
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}
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