Use the mgm connection used for fetching configuration as a transporter.

ndb/include/mgmapi/mgmapi.h:
  Add mgmapi call: ndb_mgm_get_mgmd_nodeid()
  
  - returns the node id that the handle is connected to.
  - returns 0 on error.
ndb/include/transporter/TransporterRegistry.hpp:
  Add TransporterRegistry::connect_client(NdbMgmHandle h)
   - uses a connected NdbMgmHandle to connect to the mgm server as a client.
   - sets up a transporter connection
   - used to transform the initial mgm connection (used for fetching configuration)
     into a transporter connection
  
  Added connect_ndb_mgmd(NdbMgmHandle h)
   - turn the supplied mgm connection into a transporter connection
   - return the socket
  
  Improve comments on connect_ndb_mgmd(SocketClient)
ndb/src/common/transporter/Transporter.cpp:
  Add Transporter::connect_client(NDB_SOCKET_TYPE)
   - use an existing socket to make a transporter connection
ndb/src/common/transporter/Transporter.hpp:
  Add connect_client(NDB_SOCKET_TYPE)
ndb/src/common/transporter/TransporterRegistry.cpp:
  Add TransporterRegistry::connect_client(NdbMgmHandle)
   - use an existing mgm connection to connect a transporter
   - used to change the mgm connection used for fetching configuration into a transporter
  
  Add connect_ndb_mgmd(NdbMgmHandle)
   - use existing NdbMgmHandle
   - convert to transporter
   - return socket
ndb/src/kernel/vm/Configuration.cpp:
  After fetching configuration, use the mgm connection as a transporter.
  Fail fatally if this fails.
ndb/src/mgmapi/mgmapi.cpp:
  Add ndb_mgm_get_mgmd_nodeid(h)
   - returns the node id of the mgm server you're connected to.
ndb/src/mgmsrv/Services.cpp:
  Add "get mgmd nodeid" mgmd call
  
  returns 'nodeid' - the node id of the mgm server your connected to
ndb/src/mgmsrv/Services.hpp:
  add prototype for get_mgmd_nodeid

1 files changed, 10 insertions, 1 deletions

diff --git a/ndb/include/transporter/TransporterRegistry.hpp b/ndb/include/transporter/TransporterRegistry.hpp
index a31fa1d5ce2..f69cd058c65 100644
--- a/ndb/include/transporter/TransporterRegistry.hpp
+++ b/ndb/include/transporter/TransporterRegistry.hpp
@@ -116,12 +116,21 @@ public:
    */
   bool connect_server(NDB_SOCKET_TYPE sockfd);
 
+  int TransporterRegistry::connect_client(NdbMgmHandle h);
+
   /**
-   * use a mgmd connection to connect as a transporter
+   * Given a SocketClient, creates a NdbMgmHandle, turns it into a transporter
+   * and returns the socket.
    */
   NDB_SOCKET_TYPE connect_ndb_mgmd(SocketClient *sc);
 
   /**
+   * Given a connected NdbMgmHandle, turns it into a transporter
+   * and returns the socket.
+   */
+  NDB_SOCKET_TYPE connect_ndb_mgmd(NdbMgmHandle h);
+
+  /**
    * Remove all transporters
    */
   void removeAll();