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Bumping version to include changes that better handle TLS errors. Bump nescessary to prepare for when the version of Go is bumped to 1.20 Signed-off-by: Madhav Jivrajani <madhav.jiv@gmail.com>
173 lines
4.4 KiB
Go
173 lines
4.4 KiB
Go
/*
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Copyright (c) 2017 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 simulator
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import (
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"fmt"
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"reflect"
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"strings"
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"time"
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"github.com/vmware/govmomi/vim25/mo"
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"github.com/vmware/govmomi/vim25/types"
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)
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const vTaskSuffix = "_Task" // vmomi suffix
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const sTaskSuffix = "Task" // simulator suffix (avoiding golint warning)
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// TaskDelay applies to all tasks.
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// Names for DelayConfig.MethodDelay will differ for task and api delays. API
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// level names often look like PowerOff_Task, whereas the task name is simply
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// PowerOff.
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var TaskDelay = DelayConfig{}
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type Task struct {
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mo.Task
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ctx *Context
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Execute func(*Task) (types.AnyType, types.BaseMethodFault)
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}
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func NewTask(runner TaskRunner) *Task {
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ref := runner.Reference()
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name := reflect.TypeOf(runner).Elem().Name()
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name = strings.Replace(name, "VM", "Vm", 1) // "VM" for the type to make go-lint happy, but "Vm" for the vmodl ID
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return CreateTask(ref, name, runner.Run)
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}
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func CreateTask(e mo.Reference, name string, run func(*Task) (types.AnyType, types.BaseMethodFault)) *Task {
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ref := e.Reference()
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id := name
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if strings.HasSuffix(id, sTaskSuffix) {
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id = id[:len(id)-len(sTaskSuffix)]
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name = id + vTaskSuffix
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}
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task := &Task{
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Execute: run,
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}
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task.Self = Map.newReference(task)
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task.Info.Key = task.Self.Value
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task.Info.Task = task.Self
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task.Info.Name = ucFirst(name)
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task.Info.DescriptionId = fmt.Sprintf("%s.%s", ref.Type, id)
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task.Info.Entity = &ref
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task.Info.EntityName = ref.Value
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task.Info.Reason = &types.TaskReasonUser{UserName: "vcsim"} // TODO: Context.Session.User
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task.Info.QueueTime = time.Now()
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task.Info.State = types.TaskInfoStateQueued
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Map.Put(task)
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return task
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}
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type TaskRunner interface {
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mo.Reference
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Run(*Task) (types.AnyType, types.BaseMethodFault)
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}
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// taskReference is a helper struct so we can call AcquireLock in Run()
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type taskReference struct {
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Self types.ManagedObjectReference
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}
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func (tr *taskReference) Reference() types.ManagedObjectReference {
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return tr.Self
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}
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func (t *Task) Run(ctx *Context) types.ManagedObjectReference {
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t.ctx = ctx
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// alias the global Map to reduce data races in tests that reset the
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// global Map variable.
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vimMap := Map
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vimMap.AtomicUpdate(t.ctx, t, []types.PropertyChange{
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{Name: "info.startTime", Val: time.Now()},
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{Name: "info.state", Val: types.TaskInfoStateRunning},
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})
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tr := &taskReference{
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Self: *t.Info.Entity,
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}
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// in most cases, the caller already holds this lock, and we would like
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// the lock to be held across the "hand off" to the async goroutine.
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unlock := vimMap.AcquireLock(ctx, tr)
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go func() {
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TaskDelay.delay(t.Info.Name)
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res, err := t.Execute(t)
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unlock()
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state := types.TaskInfoStateSuccess
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var fault interface{}
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if err != nil {
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state = types.TaskInfoStateError
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fault = types.LocalizedMethodFault{
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Fault: err,
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LocalizedMessage: fmt.Sprintf("%T", err),
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}
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}
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vimMap.AtomicUpdate(t.ctx, t, []types.PropertyChange{
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{Name: "info.completeTime", Val: time.Now()},
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{Name: "info.state", Val: state},
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{Name: "info.result", Val: res},
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{Name: "info.error", Val: fault},
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})
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}()
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return t.Self
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}
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// RunBlocking() should only be used when an async simulator task needs to wait
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// on another async simulator task.
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// It polls for task completion to avoid the need to set up a PropertyCollector.
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func (t *Task) RunBlocking(ctx *Context) {
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_ = t.Run(ctx)
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t.Wait()
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}
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// Wait blocks until the task is complete.
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func (t *Task) Wait() {
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// we do NOT want to share our lock with the tasks's context, because
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// the goroutine that executes the task will use ctx to update the
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// state (among other things).
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isolatedLockingContext := &Context{}
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isRunning := func() bool {
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var running bool
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Map.WithLock(isolatedLockingContext, t, func() {
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switch t.Info.State {
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case types.TaskInfoStateSuccess, types.TaskInfoStateError:
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running = false
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default:
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running = true
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}
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})
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return running
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}
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for isRunning() {
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time.Sleep(10 * time.Millisecond)
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}
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}
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