locator: add a virtual get_name() method to snitch classes

Add a pure virtual i_endpoint_snitch::get_name() method that
should return the corresponding Java-name of a snitch
class instance.

Patch is also available on dev:/snitch-get-name-v1

Signed-off-by: Vlad Zolotarov <vladz@cloudius-systems.com>

locator/gossiping_property_file_snitch.hh

@@ -127,6 +127,10 @@ private:
      */
     void set_stopped();
 
+    virtual sstring get_name() const {
+        return "org.apache.cassandra.locator.GossipingPropertyFileSnitch";
+    }
+
 private:
     sstring _fname;
     timer<> _file_reader;

locator/rack_inferring_snitch.hh

@@ -56,6 +56,10 @@ struct rack_inferring_snitch : public snitch_base {
         _state = snitch_state::stopped;
         return make_ready_future<>();
     }
+
+    virtual sstring get_name() const {
+        return "org.apache.cassandra.locator.RackInferringSnitch";
+    }
 };
 
 } // namespace locator

locator/simple_snitch.hh

@@ -76,6 +76,10 @@ struct simple_snitch : public snitch_base {
         _state = snitch_state::stopped;
         return make_ready_future<>();
     }
+
+    virtual sstring get_name() const {
+        return "org.apache.cassandra.locator.SimpleSnitch";
+    }
 };
 
 }

locator/snitch_base.hh

@@ -114,6 +114,8 @@ struct i_endpoint_snitch {
         _snitch_is_ready.set_value();
     }
 
+    virtual sstring get_name() const = 0;
+
 protected:
     static unsigned& io_cpu_id() {
         static unsigned id = 0;