interfaces

package
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Published: May 19, 2022 License: MPL-2.0 Imports: 3 Imported by: 76

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Types

type EventEmitter

type EventEmitter interface {
	EmitEvent(event *structs.TaskEvent)
}

type ScriptExecutor

type ScriptExecutor interface {
	Exec(timeout time.Duration, cmd string, args []string) ([]byte, int, error)
}

ScriptExecutor is an interface that supports Exec()ing commands in the driver's context. Split out of DriverHandle to ease testing.

type TaskLifecycle

type TaskLifecycle interface {
	// Restart a task in place. If failure=false then the restart does not
	// count as an attempt in the restart policy.
	Restart(ctx context.Context, event *structs.TaskEvent, failure bool) error

	// Sends a signal to a task.
	Signal(event *structs.TaskEvent, signal string) error

	// Kill a task permanently.
	Kill(ctx context.Context, event *structs.TaskEvent) error

	// IsRunning returns true if the task runner has a handle to the task
	// driver, which is useful for distinguishing restored tasks during
	// prestart hooks. But note that the driver handle could go away after you
	// check this, so callers should make sure they're handling that case
	// safely. Ideally prestart hooks should be idempotent whenever possible
	// to handle restored tasks; use this as an escape hatch.
	IsRunning() bool
}

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