cleaned up code a bit

    added command CONNECT in management client
    added some verbose printouts
    removed prompt printout on !isatty(0)


ndb/src/mgmapi/mgmapi.cpp:
  improved verbose printouts on connecting to management server
ndb/src/mgmclient/CommandInterpreter.cpp:
  cleaned up code a bit
  added command CONNECT in management client
  added some verbose printouts
ndb/src/mgmclient/main.cpp:
  removed prompt printout on !isatty(0)
ndb/src/mgmclient/ndb_mgmclient.hpp:
  added verbose opotion

ndb/src/mgmapi/mgmapi.cpp

@@ -379,18 +379,30 @@ ndb_mgm_connect(NdbMgmHandle handle, int no_retries,
       setError(handle, NDB_MGM_COULD_NOT_CONNECT_TO_SOCKET, __LINE__,
 	       "Unable to connect with connect string: %s",
 	       cfg.makeConnectString(buf,sizeof(buf)));
+      if (verbose == -2)
+	ndbout << ", failed." << endl;
       return -1;
     }
     if (verbose == -1) {
-      ndbout << "retrying every " << retry_delay_in_seconds << " seconds:";
+      ndbout << "Retrying every " << retry_delay_in_seconds << " seconds";
+      if (no_retries > 0)
+	ndbout << ". Attempts left:";
+      else
+	ndbout << ", until connected.";;	
+      ndbout << flush;
       verbose= -2;
     }
-    NdbSleep_SecSleep(retry_delay_in_seconds);
-    if (verbose == -2) {
-      ndbout << " " << no_retries;
+    if (no_retries > 0) {
+      if (verbose == -2) {
+	ndbout << " " << no_retries;
+	ndbout << flush;
+      }
+      no_retries--;
     }
-    no_retries--;
+    NdbSleep_SecSleep(retry_delay_in_seconds);
   }
+  if (verbose == -2)
+    ndbout << endl;
 
   handle->cfg_i = i;
 

ndb/src/mgmclient/CommandInterpreter.cpp

@@ -44,7 +44,7 @@ class CommandInterpreter {
    *   Constructor
    *   @param mgmtSrvr: Management server to use when executing commands
    */
-  CommandInterpreter(const char *);
+  CommandInterpreter(const char *, int verbose);
   ~CommandInterpreter();
   
   /**
@@ -94,6 +94,7 @@ class CommandInterpreter {
    */
   void executeHelp(char* parameters);
   void executeShow(char* parameters);
+  void executeConnect(char* parameters);
   void executePurge(char* parameters);
   void executeShutdown(char* parameters);
   void executeRun(char* parameters);
@@ -153,6 +154,7 @@ class CommandInterpreter {
 
   NdbMgmHandle m_mgmsrv;
   bool connected;
+  int m_verbose;
   int try_reconnect;
 #ifdef HAVE_GLOBAL_REPLICATION  
   NdbRepHandle m_repserver;
@@ -169,9 +171,9 @@ class CommandInterpreter {
 #include "ndb_mgmclient.hpp"
 #include "ndb_mgmclient.h"
 
-Ndb_mgmclient::Ndb_mgmclient(const char *host)
+Ndb_mgmclient::Ndb_mgmclient(const char *host,int verbose)
 {
-  m_cmd= new CommandInterpreter(host);
+  m_cmd= new CommandInterpreter(host,verbose);
 }
 Ndb_mgmclient::~Ndb_mgmclient()
 {
@@ -275,6 +277,7 @@ static const char* helpText =
 "REP CONNECT <host:port>                Connect to REP server on host:port\n"
 #endif
 "PURGE STALE SESSIONS                   Reset reserved nodeid's in the mgmt server\n"
+"CONNECT                                Connect to management server (reconnect if already connected)\n"
 "QUIT                                   Quit management client\n"
 ;
 
@@ -373,7 +376,8 @@ convert(const char* s, int& val) {
 /*
  * Constructor
  */
-CommandInterpreter::CommandInterpreter(const char *_host) 
+CommandInterpreter::CommandInterpreter(const char *_host,int verbose) 
+  : m_verbose(verbose)
 {
   m_mgmsrv = ndb_mgm_create_handle();
   if(m_mgmsrv == NULL) {
@@ -437,7 +441,15 @@ CommandInterpreter::connect()
 {
   if(!connected) {
     if(!ndb_mgm_connect(m_mgmsrv, try_reconnect-1, 5, 1))
+    {
       connected = true;
+      if (m_verbose)
+      {
+	printf("Connected to Management Server at: %s:%d\n",
+	       ndb_mgm_get_connected_host(m_mgmsrv),
+	       ndb_mgm_get_connected_port(m_mgmsrv));
+      }
+    }
   }
   return connected;
 }
@@ -445,7 +457,7 @@ CommandInterpreter::connect()
 bool 
 CommandInterpreter::disconnect() 
 {
-  if (ndb_mgm_disconnect(m_mgmsrv) == -1) {
+  if (connected && (ndb_mgm_disconnect(m_mgmsrv) == -1)) {
     ndbout_c("Could not disconnect from management server");
     printError();
   }
@@ -459,18 +471,21 @@ CommandInterpreter::disconnect()
 int 
 CommandInterpreter::execute(const char *_line, int _try_reconnect) 
 {
+  DBUG_ENTER("CommandInterpreter::execute");
+  DBUG_PRINT("info",("line=\"%s\"",_line));
+
   if (_try_reconnect >= 0)
     try_reconnect=_try_reconnect;
   char * line;
   if(_line == NULL) {
     //   ndbout << endl;
-    return false;
+    DBUG_RETURN(false);
   }
   line = my_strdup(_line,MYF(MY_WME));
   My_auto_ptr<char> ptr(line);
   
   if (emptyString(line)) {
-    return true;
+    DBUG_RETURN(true);
   }
   
   for (unsigned int i = 0; i < strlen(line); ++i) {
@@ -484,41 +499,49 @@ CommandInterpreter::execute(const char *_line, int _try_reconnect)
   if (strcmp(firstToken, "HELP") == 0 ||
       strcmp(firstToken, "?") == 0) {
     executeHelp(allAfterFirstToken);
-    return true;
+    DBUG_RETURN(true);
+  }
+  else if (strcmp(firstToken, "CONNECT") == 0) {
+    executeConnect(allAfterFirstToken);
+    DBUG_RETURN(true);
   }
-  else if (strcmp(firstToken, "SHOW") == 0) {
+
+  if (!connect())
+    DBUG_RETURN(true);
+
+  if (strcmp(firstToken, "SHOW") == 0) {
     executeShow(allAfterFirstToken);
-    return true;
+    DBUG_RETURN(true);
   }
   else if (strcmp(firstToken, "SHUTDOWN") == 0) {
     executeShutdown(allAfterFirstToken);
-    return true;
+    DBUG_RETURN(true);
   }
   else if (strcmp(firstToken, "CLUSTERLOG") == 0){
     executeClusterLog(allAfterFirstToken);
-    return true;
+    DBUG_RETURN(true);
   }
   else if(strcmp(firstToken, "START") == 0 &&
 	  allAfterFirstToken != NULL &&
 	  strncmp(allAfterFirstToken, "BACKUP", sizeof("BACKUP") - 1) == 0){
     executeStartBackup(allAfterFirstToken);
-    return true;
+    DBUG_RETURN(true);
   }
   else if(strcmp(firstToken, "ABORT") == 0 &&
 	  allAfterFirstToken != NULL &&
 	  strncmp(allAfterFirstToken, "BACKUP", sizeof("BACKUP") - 1) == 0){
     executeAbortBackup(allAfterFirstToken);
-    return true;
+    DBUG_RETURN(true);
   }
   else if (strcmp(firstToken, "PURGE") == 0) {
     executePurge(allAfterFirstToken);
-    return true;
+    DBUG_RETURN(true);
   } 
 #ifdef HAVE_GLOBAL_REPLICATION
   else if(strcmp(firstToken, "REPLICATION") == 0 ||
 	  strcmp(firstToken, "REP") == 0) {
     executeRep(allAfterFirstToken);
-    return true;
+    DBUG_RETURN(true);
   }
 #endif // HAVE_GLOBAL_REPLICATION
   else if(strcmp(firstToken, "ENTER") == 0 &&
@@ -526,14 +549,14 @@ CommandInterpreter::execute(const char *_line, int _try_reconnect)
 	  strncmp(allAfterFirstToken, "SINGLE USER MODE ", 
 		  sizeof("SINGLE USER MODE") - 1) == 0){
     executeEnterSingleUser(allAfterFirstToken);
-    return true;
+    DBUG_RETURN(true);
   }
   else if(strcmp(firstToken, "EXIT") == 0 &&
 	  allAfterFirstToken != NULL &&
 	  strncmp(allAfterFirstToken, "SINGLE USER MODE ", 
 		  sizeof("SINGLE USER MODE") - 1) == 0){
     executeExitSingleUser(allAfterFirstToken);
-    return true;
+    DBUG_RETURN(true);
   }
   else if (strcmp(firstToken, "ALL") == 0) {
     analyseAfterFirstToken(-1, allAfterFirstToken);
@@ -542,7 +565,7 @@ CommandInterpreter::execute(const char *_line, int _try_reconnect)
 	  strcmp(firstToken, "EXIT") == 0 ||
 	  strcmp(firstToken, "BYE") == 0) && 
 	  allAfterFirstToken == NULL){
-    return false;
+    DBUG_RETURN(false);
   } else {
     /**
      * First token should be a digit, node ID
@@ -552,18 +575,18 @@ CommandInterpreter::execute(const char *_line, int _try_reconnect)
     if (! convert(firstToken, nodeId)) {
       ndbout << "Invalid command: " << line << endl;
       ndbout << "Type HELP for help." << endl << endl;
-      return true;
+      DBUG_RETURN(true);
     }
 
     if (nodeId < 0) {
       ndbout << "Invalid node ID: " << firstToken << "." << endl;
-      return true;
+      DBUG_RETURN(true);
     }
     
     analyseAfterFirstToken(nodeId, allAfterFirstToken);
     
   }
-  return true;
+  DBUG_RETURN(true);
 }
 
 
@@ -692,7 +715,6 @@ CommandInterpreter::executeForAll(const char * cmd, ExecuteFunction fun,
     ndbout_c("Trying to start all nodes of system.");
     ndbout_c("Use ALL STATUS to see the system start-up phases.");
   } else {
-    connect();
     struct ndb_mgm_cluster_state *cl= ndb_mgm_get_status(m_mgmsrv);
     if(cl == 0){
       ndbout_c("Unable get status from management server");
@@ -826,8 +848,6 @@ CommandInterpreter::executeHelp(char* parameters)
 void
 CommandInterpreter::executeShutdown(char* parameters) 
 { 
-  connect();
-
   ndb_mgm_cluster_state *state = ndb_mgm_get_status(m_mgmsrv);
   if(state == NULL) {
     ndbout_c("Could not get status");
@@ -979,7 +999,6 @@ CommandInterpreter::executePurge(char* parameters)
 
   int i;
   char *str;
-  connect();
   
   if (ndb_mgm_purge_stale_sessions(m_mgmsrv, &str)) {
     ndbout_c("Command failed");
@@ -999,7 +1018,6 @@ void
 CommandInterpreter::executeShow(char* parameters) 
 { 
   int i;
-  connect();
   if (emptyString(parameters)) {
     ndbout << "Cluster Configuration" << endl
 	   << "---------------------" << endl;
@@ -1087,6 +1105,12 @@ CommandInterpreter::executeShow(char* parameters)
   }
 }
 
+void
+CommandInterpreter::executeConnect(char* parameters) 
+{
+  disconnect();
+  connect();
+}
 
 //*****************************************************************************
 //*****************************************************************************
@@ -1094,7 +1118,6 @@ void
 CommandInterpreter::executeClusterLog(char* parameters) 
 {
   int i;
-  connect();
   if (parameters != 0 && strlen(parameters) != 0) {
     enum ndb_mgm_clusterlog_level severity = NDB_MGM_CLUSTERLOG_ALL;
     int isOk = true;
@@ -1240,7 +1263,6 @@ CommandInterpreter::executeClusterLog(char* parameters)
 void
 CommandInterpreter::executeStop(int processId, const char *, bool all) 
 {
-  connect();
   int result = 0;
   if(all) {
     result = ndb_mgm_stop(m_mgmsrv, 0, 0);
@@ -1262,7 +1284,6 @@ CommandInterpreter::executeStop(int processId, const char *, bool all)
 void
 CommandInterpreter::executeEnterSingleUser(char* parameters) 
 {
-  connect();
   strtok(parameters, " ");
   struct ndb_mgm_reply reply;
   char* id = strtok(NULL, " ");
@@ -1289,7 +1310,6 @@ CommandInterpreter::executeEnterSingleUser(char* parameters)
 void 
 CommandInterpreter::executeExitSingleUser(char* parameters) 
 {
-  connect();
   int result = ndb_mgm_exit_single_user(m_mgmsrv, 0);
   if (result != 0) {
     ndbout_c("Exiting single user mode failed.");
@@ -1304,7 +1324,6 @@ void
 CommandInterpreter::executeStart(int processId, const char* parameters,
 				 bool all) 
 {
-  connect();
   int result;
   if(all) {
     result = ndb_mgm_start(m_mgmsrv, 0, 0);
@@ -1328,7 +1347,6 @@ void
 CommandInterpreter::executeRestart(int processId, const char* parameters,
 				   bool all) 
 {
-  connect();
   int result;
   int nostart = 0;
   int initialstart = 0;
@@ -1378,7 +1396,6 @@ CommandInterpreter::executeDumpState(int processId, const char* parameters,
     ndbout << "Expected argument" << endl;
     return;
   }
-  connect();
 
   Uint32 no = 0;
   int pars[25];
@@ -1418,7 +1435,6 @@ CommandInterpreter::executeStatus(int processId,
     return;
   }
 
-  connect();
   ndb_mgm_node_status status;
   Uint32 startPhase, version;
   bool system;
@@ -1469,7 +1485,6 @@ void
 CommandInterpreter::executeLogLevel(int processId, const char* parameters, 
 				    bool all) 
 {
-  connect();
   (void) all;
   
   BaseString tmp(parameters);
@@ -1525,7 +1540,6 @@ void CommandInterpreter::executeError(int processId,
     return;
   }
 
-  connect();
   // Copy parameters since strtok will modify it
   char* newpar = my_strdup(parameters,MYF(MY_WME)); 
   My_auto_ptr<char> ap1(newpar);
@@ -1589,7 +1603,6 @@ void
 CommandInterpreter::executeLog(int processId,
 			       const char* parameters, bool all) 
 {
-  connect();
   struct ndb_mgm_reply reply;
   Vector<const char *> blocks;
   if (! parseBlockSpecification(parameters, blocks)) {
@@ -1657,7 +1670,6 @@ CommandInterpreter::executeTestOn(int processId,
     ndbout << "No parameters expected to this command." << endl;
     return;
   }
-  connect();
   struct ndb_mgm_reply reply;
   int result = ndb_mgm_start_signallog(m_mgmsrv, processId, &reply);
   if (result != 0) {
@@ -1676,7 +1688,6 @@ CommandInterpreter::executeTestOff(int processId,
     ndbout << "No parameters expected to this command." << endl;
     return;
   }
-  connect();
   struct ndb_mgm_reply reply;
   int result = ndb_mgm_stop_signallog(m_mgmsrv, processId, &reply);
   if (result != 0) {
@@ -1798,8 +1809,6 @@ CommandInterpreter::executeEventReporting(int processId,
     ndbout << "Expected argument" << endl;
     return;
   }
-  connect();
-
   BaseString tmp(parameters);
   Vector<BaseString> spec;
   tmp.split(spec, "=");
@@ -1850,7 +1859,6 @@ CommandInterpreter::executeEventReporting(int processId,
 void
 CommandInterpreter::executeStartBackup(char* /*parameters*/) 
 {
-  connect();
   struct ndb_mgm_reply reply;
   unsigned int backupId;
 
@@ -1897,8 +1905,6 @@ CommandInterpreter::executeStartBackup(char* /*parameters*/)
 void
 CommandInterpreter::executeAbortBackup(char* parameters) 
 {
-  connect();
-
   strtok(parameters, " ");
   struct ndb_mgm_reply reply;
   char* id = strtok(NULL, "\0");
@@ -1952,7 +1958,6 @@ CommandInterpreter::executeRep(char* parameters)
     return;
   }
 
-  connect();
   char * line = my_strdup(parameters,MYF(MY_WME));
   My_auto_ptr<char> ap1((char*)line);
   char * firstToken = strtok(line, " ");

ndb/src/mgmclient/main.cpp

@@ -56,17 +56,18 @@ handler(int sig){
   }
 }
 
-
+static const char default_prompt[]= "ndb_mgm> ";
 static unsigned _try_reconnect;
 static char *opt_connect_str= 0;
+static const char *prompt= default_prompt;
 
 static struct my_option my_long_options[] =
 {
   NDB_STD_OPTS("ndb_mgm"),
   { "try-reconnect", 't',
-    "Specify number of retries for connecting to ndb_mgmd, default infinite", 
+    "Specify number of tries for connecting to ndb_mgmd (0 = infinite)", 
     (gptr*) &_try_reconnect, (gptr*) &_try_reconnect, 0,
-    GET_UINT, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },
+    GET_UINT, REQUIRED_ARG, 3, 0, 0, 0, 0, 0 },
   { 0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}
 };
 static void short_usage_sub(void)
@@ -116,13 +117,13 @@ read_and_execute(int _try_reconnect)
   }
 #ifdef HAVE_READLINE
   /* Get a line from the user. */
-  line_read = readline ("ndb_mgm> ");    
+  line_read = readline (prompt);    
   /* If the line has any text in it, save it on the history. */
   if (line_read && *line_read)
     add_history (line_read);
 #else
   static char linebuffer[254];
-  fputs("ndb_mgm> ", stdout);
+  fputs(prompt, stdout);
   linebuffer[sizeof(linebuffer)-1]=0;
   line_read = fgets(linebuffer, sizeof(linebuffer)-1, stdin);
   if (line_read == linebuffer) {
@@ -155,12 +156,16 @@ int main(int argc, char** argv){
     opt_connect_str= buf;
   }
 
+  if (!isatty(0))
+  {
+    prompt= 0;
+  }
+
   ndbout << "-- NDB Cluster -- Management Client --" << endl;
-  printf("Connecting to Management Server: %s\n", opt_connect_str ? opt_connect_str : "default");
 
   signal(SIGPIPE, handler);
 
-  com = new Ndb_mgmclient(opt_connect_str);
+  com = new Ndb_mgmclient(opt_connect_str,1);
   while(read_and_execute(_try_reconnect));
   delete com;
   

ndb/src/mgmclient/ndb_mgmclient.hpp

@@ -21,7 +21,7 @@ class CommandInterpreter;
 class Ndb_mgmclient
 {
 public:
-  Ndb_mgmclient(const char*);
+  Ndb_mgmclient(const char*,int verbose=0);
   ~Ndb_mgmclient();
   int execute(const char *_line, int _try_reconnect=-1);
   int execute(int argc, char** argv, int _try_reconnect=-1);