21 lines
473 B
Go
21 lines
473 B
Go
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package metrics
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import "context"
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type key int
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const (
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groupKey key = iota
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)
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// NewContextWithGroup returns a new context with the given Group added.
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func NewContextWithGroup(ctx context.Context, c *Group) context.Context {
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return context.WithValue(ctx, groupKey, c)
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}
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// GroupFromContext returns the Group associated with ctx or nil if no Group has been assigned.
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func GroupFromContext(ctx context.Context) *Group {
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c, _ := ctx.Value(groupKey).(*Group)
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return c
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}
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