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