UmputunandGitHub
3520de768d
* add siteID to cache Get * indirect option setters * add mongo cache with tests, add Key and Flusher * lint: minor warns * workaround for cache parallel test * repeater in mongo cache * missing repeater vendor * fix nop cache * add cache mongo benchmark * wired mongo cache, single opts group for mongo * disable goconst * stop cache repeated on not found error * use local mongo for tests in travis
29 lines
701 B
Go
29 lines
701 B
Go
// Package strategy defines repeater's strategy and implements some.
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// Strategy result is a channel acting like time.Timer ot time.Tick
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package strategy
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import "context"
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// Interface for repeater strategy. Returns channel with ticks
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type Interface interface {
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Start(ctx context.Context) chan struct{}
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}
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// Once strategy eliminate repeats and makes a single try only
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type Once struct{}
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// NewOnce makes no-repeat strategy
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func NewOnce() Interface {
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return &Once{}
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}
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// Start returns closed channel with a single element to prevent any repeats
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func (s *Once) Start(ctx context.Context) (ch chan struct{}) {
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ch = make(chan struct{})
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go func() {
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ch <- struct{}{}
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close(ch)
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}()
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return ch
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}
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