InfoScale™ 9.0 Cluster Server Agent Developer's Guide - AIX, Linux, Solaris, Windows

Examples of logging APIs used in a C++ agent

#include <stdio.h>
#include <locale.h>
#include "VCSAgApi.h"

void res_attr_changed(const char *res_name, const char
        *changed_res_name,const char *changed_attr_name, void
        **new_val)
{
       /*
       * NOT REQUIRED if the function is empty or is not logging
        * any messages to the agent log file
        */
        VCSAG_LOG_INIT("res_attr_changed");
}
extern "C" unsigned int
res_clean(const char *res_name, VCSAgWhyClean wc, void
                  **attr_val)
{
        VCSAG_LOG_INIT("res_clean");
        if ((attr_val) && (*attr_val)) {
                if ((remove((CHAR *)(*attr_val)) == 0) || (errno
               == ENOENT)) { return 0;       // Success
               }
        }
        return 1;       // Failure
}

void res_close(const char *res_name, void **attr_val)
{
        VCSAG_LOG_INIT("res_close");
}
//
// Determine if the given file is online (file exists) or
// offline (file does not exist).
//
extern "C" VCSAgResState
res_monitor(const char *res_name, void **attr_val, int
*conf_level)
{
        VCSAG_LOG_INIT("res_monitor");

        VCSAgResState state = VCSAgResUnknown;
        *conf_level = 0;
    
      /*
       * This msg will be printed for all resources if VCS_DBG4
       * is enabled for the resource type. Else it will be
       * logged only for that resource that has the dbg level
       * VCS_DBG4 enabled
       */

        VCSAG_RES_LOG_MSG(VCS_DBG4, VCS_DEFAULT_FLAGS, "PathName
               is(%s)", (CHAR *)(*attr_val));

        if ((attr_val) && (*attr_val)) {
              struct stat stat_buf;
              if ( (stat((CHAR *)(* attr_val), &stat_buf) == 0)
                     && (strlen((CHAR *)(* attr_val)) != 0) ) {
                     state = VCSAgResOnline; *conf_level = 100;
              }
              else {

                         state = VCSAgResOffline;
                         *conf_level = 0;
              }
        }
        VCSAG_RES_LOG_MSG(VCS_DBG7, VCS_DEFAULT_FLAGS, "State is
            (%d)", (int)state);
        return state;
}
extern "C" unsigned int
res_online(const char *res_name, void **attr_val) {
   int fd = -1;
   VCSAG_LOG_INIT("res_online");
   if ((attr_val) && (*attr_val)) {
      if (strlen((CHAR *)(* attr_val)) == 0) {
           VCSAG_LOG_MSG(VCS_WARNING, 3001, VCS_DEFAULT_FLAGS,
               "The value for PathName attribute is not
               specified");

           VCSAG_CONSOLE_LOG_MSG(VCS_WARNING, 3001,
             VCS_DEFAULT_FLAGS,
               "The value for PathName attribute is not
                 specified");

           return 0;
       }
     if (fd = creat((CHAR *)(*attr_val), S_IRUSR|S_IWUSR) < 0) {
 
         VCSAG_LOG_MSG(VCS_ERROR, 3002, VCS_DEFAULT_FLAGS,
            "Resource could not be brought up because, "
            "the attempt to create the file(%s) failed "
            "with error(%d)", (CHAR *)(*attr_val), errno); 

         VCSAG_CONSOLE_LOG_MSG(VCS_ERROR, 3002,
            VCS_DEFAULT_FLAGS,
            "Resource could not be brought up because, "
            "the attempt to create the file(%s) failed "
            "with error(%d)", (CHAR *)(*attr_val), errno);
         return 0;
       }

       close(fd);
    }
    return 0;
}

extern "C" unsigned int
res_offline(const char *res_name, void **attr_val)
{
        VCSAG_LOG_INIT("res_offline");
        if ((attr_val) && (*attr_val) && (remove((CHAR*)
        (*attr_val)) != 0) && (errno != ENOENT)) {

        VCSAG_LOG_MSG(VCS_ERROR, 14002, VCS_DEFAULT_FLAGS,
            "Resource could not be brought down because, the
            attempt to remove the file(%s) failed with
            error(%d)", (CHAR *)(*attr_val), errno);

        VCSAG_CONSOLE_LOG_MSG(VCS_ERROR, 14002,
            VCS_DEFAULT_FLAGS, "Resource could not be brought
            down because, the attempt to remove the file(%s)
           failed with error(%d)", (CHAR *)(*attr_val), errno);
    }
    return 0;
}
void res_open(const char *res_name, void **attr_val)
{
        VCSAG_LOG_INIT("res_open");

}
VCSEXPORT void VCSDECL VCSAgStartup()
{
        VCSAG_LOG_INIT("VCSAgStartup");
        VCSAgInitEntryPointStruct(V51);

        VCSAgValidateAndSetEntryPoint(VCSAgEPMonitor,
res_monitor);
        VCSAgValidateAndSetEntryPoint(VCSAgEPOnline,
res_online);
        VCSAgValidateAndSetEntryPoint(VCSAgEPOffline,
res_offline);
        VCSAgValidateAndSetEntryPoint(VCSAgEPClean, res_clean);

        VCSAgSetLogCategory(2001);

        char *s = setlocale(LC_ALL, NULL);
        VCSAG_LOGDBG_MSG(VCS_DBG1, VCS_DEFAULT_FLAGS, "Locale is
             %s", s);

}