added loadPlannedDatabases method

arangod/Cluster/ClusterInfo.cpp

@@ -434,6 +434,48 @@ vector<DatabaseID> ClusterInfo::listDatabases () {
   return res;
 }
 
+////////////////////////////////////////////////////////////////////////////////
+/// @brief (re-)load the information about planned databases
+/// Usually one does not have to call this directly.
+////////////////////////////////////////////////////////////////////////////////
+
+void ClusterInfo::loadPlannedDatabases () {
+  static const std::string prefix = "Plan/Databases";
+
+  AgencyCommResult result;
+
+  {
+    AgencyCommLocker locker("Plan", "READ");
+
+    if (locker.successful()) {
+      result = _agency.getValues(prefix, true);
+    }
+  }
+
+  if (result.successful()) {
+    std::map<std::string, std::string> databases;
+
+    if (result.flattenJson(databases, prefix + "/", false)) {
+      LOG_TRACE("%s loaded successfully", prefix.c_str());
+   
+      WRITE_LOCKER(_lock);
+      _plannedDatabases.clear(); 
+
+      std::map<std::string, std::string>::const_iterator it;
+      for (it = databases.begin(); it != databases.end(); ++it) {
+        const std::string& name = (*it).first;
+        TRI_json_t* options = JsonHelper::fromString((*it).second);
+
+        _plannedDatabases.insert(std::make_pair<DatabaseID, TRI_json_t*>(name, options));
+      }
+
+      return;
+    }
+  }
+
+  LOG_TRACE("Error while loading %s", prefix.c_str());
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 /// @brief (re-)load the information about collections from the agency
 /// Usually one does not have to call this directly.
@@ -456,7 +498,7 @@ void ClusterInfo::loadCurrentCollections () {
     std::map<std::string, std::string> collections;
 
     if (result.flattenJson(collections, prefix + "/", false)) {
-      LOG_TRACE("Current/Collections loaded successfully");
+      LOG_TRACE("%s loaded successfully", prefix.c_str());
    
       WRITE_LOCKER(_lock);
       _collections.clear(); 

arangod/Cluster/ClusterInfo.h

@@ -300,6 +300,13 @@ namespace triagens {
 
         void loadCurrentCollections ();
 
+////////////////////////////////////////////////////////////////////////////////
+/// @brief (re-)load the information about planned databases
+/// Usually one does not have to call this directly.
+////////////////////////////////////////////////////////////////////////////////
+
+        void loadPlannedDatabases ();
+
 ////////////////////////////////////////////////////////////////////////////////
 /// @brief ask about a collection
 /// If it is not found in the cache, the cache is reloaded once.
@@ -391,6 +398,7 @@ namespace triagens {
         _uniqid;
 
         // Cached data from the agency, we reload whenever necessary:
+        std::map<DatabaseID, struct TRI_json_s*> _plannedDatabases; // from Plan/Databases
         AllCollections                     _collections;  // from Current/Collections/
         bool                               _collectionsValid;
         std::map<ServerID, std::string>    _servers;      // from Current/ServersRegistered