31 lines
1,000 B
Go
31 lines
1,000 B
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: MPL-2.0
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package interfaces
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import (
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"context"
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"github.com/hashicorp/nomad/nomad/structs"
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)
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type TaskLifecycle interface {
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// Restart a task in place. If failure=false then the restart does not
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// count as an attempt in the restart policy.
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Restart(ctx context.Context, event *structs.TaskEvent, failure bool) error
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// Sends a signal to a task.
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Signal(event *structs.TaskEvent, signal string) error
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// Kill a task permanently.
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Kill(ctx context.Context, event *structs.TaskEvent) error
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// IsRunning returns true if the task runner has a handle to the task
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// driver, which is useful for distinguishing restored tasks during
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// prestart hooks. But note that the driver handle could go away after you
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// check this, so callers should make sure they're handling that case
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// safely. Ideally prestart hooks should be idempotent whenever possible
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// to handle restored tasks; use this as an escape hatch.
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IsRunning() bool
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}
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