Create new getReadQueryCount acessor

sqlitecluster/SQLite.cpp

@@ -1519,6 +1519,11 @@ uint64_t SQLite::getDBCountAtStart() const
     return _dbCountAtStart;
 }
 
+int64_t SQLite::getReadQueryCount() const
+{
+    return _readQueryCount;
+}
+
 void SQLite::setCommitEnabled(bool enable)
 {
     _sharedData.setCommitEnabled(enable);

sqlitecluster/SQLite.h

@@ -328,6 +328,17 @@ class SQLite {
     // public read-only accessor for _dbCountAtStart.
     uint64_t getDBCountAtStart() const;
 
+    // Read-only accessor for the number of read queries attempted in the current transaction (metrics/tests only).
+    int64_t getReadQueryCount() const;
+
+protected:
+    // For subclasses that override read() to record a read against the shared counter.
+    void incrementReadQueryCount() const
+    {
+        _readQueryCount++;
+    }
+
+public:
     int64_t getLastConflictIdentifier() const;
 
     string getLastConflictLocation() const;

test/lib/RemoteSQLite.cpp

@@ -35,6 +35,7 @@ bool RemoteSQLite::_runRemoteQuery(const string& query, const map<string, Parame
 
 bool RemoteSQLite::read(const string& query, SQResult& result, bool skipInfoWarn) const
 {
+    incrementReadQueryCount();
     return _runRemoteQuery(query, {}, result);
 }
 
@@ -51,11 +52,13 @@ bool RemoteSQLite::writeIdempotent(const string& query, SQResult& result)
 
 bool RemoteSQLite::read(const string& query, const map<string, Parameter>& params, SQResult& result, bool skipInfoWarn) const
 {
+    incrementReadQueryCount();
     return _runRemoteQuery(query, params, result);
 }
 
 string RemoteSQLite::read(const string& query, const map<string, Parameter>& params) const
 {
+    incrementReadQueryCount();
     SQResult result;
     if (!_runRemoteQuery(query, params, result)) {
         return "";