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https://github.com/containerd/containerd.git
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Antonio Murdaca
b812857db2
This patch handles case c) in https://github.com/moby/moby/issues/31487 (c) A request cannot be added to 's.tasks' because the queue is full. case b) isn't fixable at this point case there's no way to cancel stuff from a channel since channels aren't context aware (yet?). Parallelizing tasks handling isn't easily doable either. Signed-off-by: Antonio Murdaca <runcom@redhat.com>
51 lines
957 B
Go
51 lines
957 B
Go
package supervisor
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import (
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"context"
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"sync"
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"github.com/containerd/containerd/runtime"
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)
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// StartResponse is the response containing a started container
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type StartResponse struct {
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ExecPid int
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Container runtime.Container
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}
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// Task executes an action returning an error chan with either nil or
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// the error from executing the task
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type Task interface {
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// ErrorCh returns a channel used to report and error from an async task
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ErrorCh() chan error
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// Ctx carries the context of a task
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Ctx() context.Context
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}
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type baseTask struct {
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errCh chan error
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ctx context.Context
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mu sync.Mutex
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}
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func (t *baseTask) WithContext(ctx context.Context) {
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t.mu.Lock()
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defer t.mu.Unlock()
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t.ctx = ctx
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}
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func (t *baseTask) Ctx() context.Context {
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t.mu.Lock()
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defer t.mu.Unlock()
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return t.ctx
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}
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func (t *baseTask) ErrorCh() chan error {
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t.mu.Lock()
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defer t.mu.Unlock()
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if t.errCh == nil {
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t.errCh = make(chan error, 1)
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}
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return t.errCh
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}
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