1 files changed, 14 insertions, 0 deletions
diff --git a/vendor/github.com/hashicorp/memberlist/merge_delegate.go b/vendor/github.com/hashicorp/memberlist/merge_delegate.go
new file mode 100644
index 000000000..89afb59f2
--- /dev/null
+++ b/vendor/github.com/hashicorp/memberlist/merge_delegate.go
@@ -0,0 +1,14 @@
+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
+}