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25 lines
492 B
Go
25 lines
492 B
Go
package ctx
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import "context"
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type SessionKey int
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// ID of a session.
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type ID uint32
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const (
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idSessionKey SessionKey = 0
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)
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// ContextWithID returns a new context with the given ID.
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func ContextWithID(ctx context.Context, id ID) context.Context {
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return context.WithValue(ctx, idSessionKey, id)
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}
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// IDFromContext returns ID in this context, or 0 if not contained.
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func IDFromContext(ctx context.Context) ID {
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if id, ok := ctx.Value(idSessionKey).(ID); ok {
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return id
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}
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return 0
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}
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