[trac930] add the helper functions which are used around the

registration of the function to validate the statistics data.

src/bin/auth/auth_srv.cc

@@ -125,6 +125,10 @@ public:
 
     /// The TSIG keyring
     const shared_ptr<TSIGKeyRing>* keyring_;
+
+    /// Bind the ModuleSpec object in config_session_ with
+    /// isc:config::ModuleSpec::validateStatistics.
+    void registerStatisticsValidator();
 private:
     std::string db_file_;
 
@@ -139,6 +143,9 @@ private:
 
     /// Increment query counter
     void incCounter(const int protocol);
+
+    // validateStatistics
+    bool validateStatistics(isc::data::ConstElementPtr data) const;
 };
 
 AuthSrvImpl::AuthSrvImpl(const bool use_cache,
@@ -317,6 +324,7 @@ AuthSrv::setXfrinSession(AbstractSession* xfrin_session) {
 void
 AuthSrv::setConfigSession(ModuleCCSession* config_session) {
     impl_->config_session_ = config_session;
+    impl_->registerStatisticsValidator();
 }
 
 void
@@ -670,6 +678,22 @@ AuthSrvImpl::incCounter(const int protocol) {
     }
 }
 
+void
+AuthSrvImpl::registerStatisticsValidator() {
+    counters_.registerStatisticsValidator(
+        boost::bind(&AuthSrvImpl::validateStatistics, this, _1));
+}
+
+bool
+AuthSrvImpl::validateStatistics(isc::data::ConstElementPtr data) const {
+    if (config_session_ == NULL) {
+        return (false);
+    }
+    return (
+        config_session_->getModuleSpec().validateStatistics(
+            data, true));
+}
+
 ConstElementPtr
 AuthSrvImpl::setDbFile(ConstElementPtr config) {
     ConstElementPtr answer = isc::config::createAnswer();