taskrunner

package
v0.31.0 Latest Latest
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 Go to latest Published: May 12, 2022 License: Apache-2.0 Imports: 16 Imported by: 3

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Variables

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Functions

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Types

type Condition added in v0.10.0 

type Condition string

Condition is a type that defines the types of conditions which a WaitTask can use. 

const (
	// AllCurrent Condition means all the provided resources
	// has reached (and remains in) the Current status.
	AllCurrent Condition = "AllCurrent"

	// AllNotFound Condition means all the provided resources
	// has reached the NotFound status, i.e. they are all deleted
	// from the cluster.
	AllNotFound Condition = "AllNotFound"
)

func (Condition) Meets added in v0.10.0 

func (c Condition) Meets(s status.Status) bool

Meets returns true if the provided status meets the condition and false if it does not.

type Options added in v0.7.0 

type Options struct {
	EmitStatusEvents bool
}

Options defines properties that is passed along to the statusPoller.

type Task 

type Task interface {
	Name() string
	Action() event.ResourceAction
	Identifiers() object.ObjMetadataSet
	Start(*TaskContext)
	StatusUpdate(*TaskContext, object.ObjMetadata)
	Cancel(*TaskContext)
}

Task is the interface that must be implemented by all tasks that will be executed by the taskrunner.

type TaskContext added in v0.7.0 

type TaskContext struct {
	// contains filtered or unexported fields
}

TaskContext defines a context that is passed between all the tasks that is in a taskqueue.

func NewTaskContext added in v0.7.0 

func NewTaskContext(eventChannel chan event.Event, resourceCache cache.ResourceCache) *TaskContext

NewTaskContext returns a new TaskContext

func (*TaskContext) AbandonedObjects added in v0.27.0 

func (tc *TaskContext) AbandonedObjects() object.ObjMetadataSet

AbandonedObjects returns all the abandoned objects

func (*TaskContext) AddAbandonedObject added in v0.27.0 

func (tc *TaskContext) AddAbandonedObject(id object.ObjMetadata)

AddAbandonedObject registers that the object is abandoned

func (*TaskContext) AddInvalidObject added in v0.28.0 

func (tc *TaskContext) AddInvalidObject(id object.ObjMetadata)

AddInvalidObject registers that the object is abandoned

func (*TaskContext) EventChannel added in v0.7.0 

func (tc *TaskContext) EventChannel() chan event.Event

func (*TaskContext) Graph added in v0.29.0 

func (tc *TaskContext) Graph() *graph.Graph

func (*TaskContext) InvalidObjects added in v0.28.0 

func (tc *TaskContext) InvalidObjects() object.ObjMetadataSet

InvalidObjects returns all the abandoned objects

func (*TaskContext) InventoryManager added in v0.28.0 

func (tc *TaskContext) InventoryManager() *inventory.Manager

func (*TaskContext) IsAbandonedObject added in v0.27.0 

func (tc *TaskContext) IsAbandonedObject(id object.ObjMetadata) bool

IsAbandonedObject returns true if the object is abandoned

func (*TaskContext) IsInvalidObject added in v0.28.0 

func (tc *TaskContext) IsInvalidObject(id object.ObjMetadata) bool

IsInvalidObject returns true if the object is abandoned

func (*TaskContext) ResourceCache added in v0.26.0 

func (tc *TaskContext) ResourceCache() cache.ResourceCache

func (*TaskContext) SendEvent added in v0.27.0 

func (tc *TaskContext) SendEvent(e event.Event)

SendEvent sends an event on the event channel

func (*TaskContext) SetGraph added in v0.29.0 

func (tc *TaskContext) SetGraph(g *graph.Graph)

func (*TaskContext) TaskChannel added in v0.7.0 

func (tc *TaskContext) TaskChannel() chan TaskResult

type TaskResult 

type TaskResult struct {
	Err error
}

TaskResult is the type returned from tasks once they have completed or failed. If it has failed or timed out, the Err property will be set.

type TaskStatusRunner added in v0.28.0 

type TaskStatusRunner struct {
	Identifiers   object.ObjMetadataSet
	StatusWatcher watcher.StatusWatcher
}

TaskStatusRunner is a taskRunner that executes a set of tasks while at the same time uses the statusPoller to keep track of the status of the resources.

func NewTaskStatusRunner 

func NewTaskStatusRunner(identifiers object.ObjMetadataSet, statusWatcher watcher.StatusWatcher) *TaskStatusRunner

NewTaskStatusRunner returns a new TaskStatusRunner.

func (*TaskStatusRunner) Run added in v0.28.0 

func (tsr *TaskStatusRunner) Run(
	ctx context.Context,
	taskContext *TaskContext,
	taskQueue chan Task,
	opts Options,
) error

Run executes the tasks in the taskqueue, with the statusPoller running in the background.

The tasks run in a loop where a single goroutine will process events from three different channels.

  • taskQueue is read to allow updating the task queue at runtime.
  • statusChannel is read to allow updates to the resource cache and triggering validation of wait conditions.
  • eventChannel is written to with events based on status updates, if emitStatusEvents is true.

type WaitTask 

type WaitTask struct {
	// TaskName allows providing a name for the task.
	TaskName string
	// Ids is the full list of resources that we are waiting for.
	Ids object.ObjMetadataSet
	// Condition defines the status we want all resources to reach
	Condition Condition
	// Timeout defines how long we are willing to wait for the condition
	// to be met.
	Timeout time.Duration
	// Mapper is the RESTMapper to update after CRDs have been reconciled
	Mapper meta.RESTMapper
	// contains filtered or unexported fields
}

WaitTask is an implementation of the Task interface that is used to wait for a set of resources (identified by a slice of ObjMetadata) will all meet the condition specified. It also specifies a timeout for how long we are willing to wait for this to happen. Unlike other implementations of the Task interface, the wait task is handled in a special way to the taskrunner and is a part of the core package.

func NewWaitTask 

func NewWaitTask(name string, ids object.ObjMetadataSet, cond Condition, timeout time.Duration, mapper meta.RESTMapper) *WaitTask

NewWaitTask creates a new wait task where we will wait until the resources specifies by ids all meet the specified condition.

func (*WaitTask) Action added in v0.26.0 

func (w *WaitTask) Action() event.ResourceAction

func (*WaitTask) Cancel added in v0.27.0 

func (w *WaitTask) Cancel(_ *TaskContext)

Cancel exits early with a timeout error

func (*WaitTask) Identifiers 

func (w *WaitTask) Identifiers() object.ObjMetadataSet

func (*WaitTask) Name added in v0.26.0 

func (w *WaitTask) Name() string

func (*WaitTask) Start 

func (w *WaitTask) Start(taskContext *TaskContext)

Start kicks off the task. For the wait task, this just means setting up the timeout timer.

func (*WaitTask) StatusUpdate added in v0.27.0 

func (w *WaitTask) StatusUpdate(taskContext *TaskContext, id object.ObjMetadata)

StatusUpdate records objects status updates and sends WaitEvents. If all objects are reconciled or skipped, cancelFunc is called. The pending set is write locked during execution of StatusUpdate.

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