add wouldConflict() method to UnionServiceMap

2 files changed, 15 insertions, 0 deletions

diff --git a/slobrok/src/vespa/slobrok/server/union_service_map.cpp b/slobrok/src/vespa/slobrok/server/union_service_map.cpp
index baf94a6fa69..9abfc237d56 100644
--- a/slobrok/src/vespa/slobrok/server/union_service_map.cpp
+++ b/slobrok/src/vespa/slobrok/server/union_service_map.cpp
@@ -20,6 +20,19 @@ ServiceMappingList UnionServiceMap::currentConsensus() const {
     return result;
 }
 
+bool UnionServiceMap::wouldConflict(const ServiceMapping &mapping) const {
+    const vespalib::string &key = mapping.name;
+    auto iter = _mappings.find(key);
+    if (iter == _mappings.end()) {
+        return false;
+    }
+    const Mappings &values = iter->second;
+    if (values.size() != 1) {
+        return true;
+    }
+    return (values[0].spec != mapping.spec);
+}
+
 void UnionServiceMap::add(const ServiceMapping &mapping)
 {
     const vespalib::string &key = mapping.name;
diff --git a/slobrok/src/vespa/slobrok/server/union_service_map.h b/slobrok/src/vespa/slobrok/server/union_service_map.h
index d5bcbfaed94..67d3221849d 100644
--- a/slobrok/src/vespa/slobrok/server/union_service_map.h
+++ b/slobrok/src/vespa/slobrok/server/union_service_map.h
@@ -36,6 +36,8 @@ public:
 
     ServiceMappingList currentConsensus() const;
 
+    bool wouldConflict(const ServiceMapping &mapping) const;
+
     void add(const ServiceMapping &mapping) override;
     void remove(const ServiceMapping &mapping) override;
     void update(const ServiceMapping &old_mapping,