RUBY-250 - Expose various cluster attributes via getters in the api.

Author: stamhankar999

CHANGELOG.md

@@ -9,6 +9,7 @@ Features:
   we are not sure the statement is already prepared. The motivation is that in the steady state, all nodes have
   prepared statements already, so there is no need to prepare statements before executing them. If the guess is wrong,
   the client will prepare and execute at that point.
+* Expose various cluster attributes with getters.
 
 Bug Fixes:
 * [RUBY-255](https://datastax-oss.atlassian.net/browse/RUBY-255) ControlConnection.peer_ip ignores peers that are missing critical information in system.peers.

lib/cassandra/cluster.rb

@@ -151,6 +151,21 @@ def each_keyspace(&block)
     #   @return [Boolean] true or false
     def_delegators :@schema, :keyspace, :has_keyspace?
 
+    # @return [Integer] Cassandra native protocol port
+    def port
+      @connection_options.port
+    end
+
+    # @return [Integer] the version of the native protocol used in communication with nodes
+    def protocol_version
+      @connection_options.protocol_version
+    end
+
+    # @return [Hash<String, Cassandra::Execution::Profile>] the collection of execution profiles
+    def execution_profiles
+      @profile_manager.profiles
+    end
+
     # @!method refresh_schema_async
     #   Trigger an asynchronous schema metadata refresh
     #   @return [Cassandra::Future<nil>] a future that will be fulfilled when
@@ -279,7 +294,7 @@ def inspect
       "name=#{name.inspect}, " \
       "port=#{@connection_options.port}, " \
       "protocol_version=#{@connection_options.protocol_version}, " \
-      "profile_manager=#{@profile_manager.inspect}, " \
+      "execution_profiles=#{@profile_manager.profiles.inspect}, " \
       "hosts=#{hosts.inspect}, " \
       "keyspaces=#{keyspaces.inspect}>"
     end