From 87c8cea851e5b3142c8dd0ce7c9f8e44341710b6 Mon Sep 17 00:00:00 2001
From: Ben Johnson <benbjohnson@yahoo.com>
Date: Thu, 24 Dec 2020 16:35:52 -0700
Subject: [PATCH] Verify replicator name uniqueness

---
 db.go | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/db.go b/db.go
index f829e8a..4deca94 100644
--- a/db.go
+++ b/db.go
@@ -154,6 +154,15 @@ func (db *DB) PageSize() int {
 }
 
 func (db *DB) Open() (err error) {
+	// Validate that all replicator names are unique.
+	m := make(map[string]struct{})
+	for _, r := range db.Replicators {
+		if _, ok := m[r.Name()]; ok {
+			return fmt.Errorf("duplicate replicator name: %q", r.Name())
+		}
+		m[r.Name()] = struct{}{}
+	}
+
 	// Start monitoring SQLite database in a separate goroutine.
 	db.wg.Add(1)
 	go func() { defer db.wg.Done(); db.monitor() }()