package memberlist
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// MergeDelegate is used to involve a client in
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// a potential cluster merge operation. Namely, when
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// a node does a TCP push/pull (as part of a join),
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// the delegate is involved and allowed to cancel the join
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// based on custom logic. The merge delegate is NOT invoked
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// as part of the push-pull anti-entropy.
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type MergeDelegate interface {
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// NotifyMerge is invoked when a merge could take place.
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// Provides a list of the nodes known by the peer. If
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// the return value is non-nil, the merge is canceled.
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NotifyMerge(peers []*Node) error
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}
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