Restore divisor for memory size reported by Windows. Also, implements warning

and critical levels for performance counters. (Paulo Afonso Graner Fessel)


git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@892 f882894a-f735-0410-b71e-b25c423dba1c

1 files changed, 111 insertions, 37 deletions

diff --git a/plugins/check_nt.c b/plugins/check_nt.c
index ef0a66b5..25645eaa 100644
--- a/plugins/check_nt.c
+++ b/plugins/check_nt.c
@@ -81,7 +81,8 @@ int main(int argc, char **argv){
         char *perfdata=NULL;
         char *temp_string=NULL;
         char *temp_string_perf=NULL;
-        char *description=NULL;
+        char *description=NULL,*counter_unit = NULL;
+        char *minval = NULL, *maxval = NULL, *errcvt = NULL;
 
         double total_disk_space=0;
         double free_disk_space=0;
@@ -90,6 +91,7 @@ int main(int argc, char **argv){
         double critical_used_space=0;
         double mem_commitLimit=0;
         double mem_commitByte=0;
+        double fminval = 0, fmaxval = 0;
         unsigned long utilization;
         unsigned long uptime;
         unsigned long age_in_minutes;
@@ -99,6 +101,9 @@ int main(int argc, char **argv){
         int uphours=0;
         int upminutes=0;
 
+        int isPercent = FALSE;
+        int allRight = FALSE;
+
         setlocale (LC_ALL, "");
         bindtextdomain (PACKAGE, LOCALEDIR);
         textdomain (PACKAGE);
@@ -252,12 +257,13 @@ int main(int argc, char **argv){
                 warning_used_space = ((float)warning_value / 100) * mem_commitLimit;
                 critical_used_space = ((float)critical_value / 100) * mem_commitLimit;
 
-                // Changed divisor in following line from 1048567 to 3044515 to accurately reflect memory size
+                /* Divisor should be 1048567, not 3044515, as we are measuring "Commit Charge" here, 
+                which equals RAM + Pagefiles. */
                 asprintf(&output_message,_("Memory usage: total:%.2f Mb - used: %.2f Mb (%.0f%%) - free: %.2f Mb (%.0f%%)"), 
-                  mem_commitLimit / 3044515, mem_commitByte / 3044515, percent_used_space,  
-                  (mem_commitLimit - mem_commitByte) / 3044515, (mem_commitLimit - mem_commitByte) / mem_commitLimit * 100);
-                asprintf(&perfdata,_("'Memory usage'=%.2fMb;%.2f;%.2f;0.00;%.2f"), mem_commitByte / 3044515,
-                  warning_used_space / 3044515, critical_used_space / 3044515, mem_commitLimit / 3044515);
+                  mem_commitLimit / 1048567, mem_commitByte / 1048567, percent_used_space,  
+                  (mem_commitLimit - mem_commitByte) / 1048567, (mem_commitLimit - mem_commitByte) / mem_commitLimit * 100);
+                asprintf(&perfdata,_("'Memory usage'=%.2fMb;%.2f;%.2f;0.00;%.2f"), mem_commitByte / 1048567,
+                  warning_used_space / 1048567, critical_used_space / 1048567, mem_commitLimit / 1048567);
         
                 return_code=STATE_OK;
                 if(check_critical_value==TRUE && percent_used_space >= critical_value)
@@ -269,40 +275,108 @@ int main(int argc, char **argv){
 
         case CHECK_COUNTER:
 
-                if (value_list==NULL)
-                        output_message = strdup (_("No counter specified"));
-                else {
-                        preparelist(value_list);                /* replace , between services with & to send the request */
-                        asprintf(&send_buffer,"%s&8&%s", req_password,value_list);
-                        fetch_data (server_address, server_port, send_buffer);
-                        strtok(value_list,"&");                 /* burn the first parameters */
-                        description = strtok(NULL,"&");
-                        counter_value = atof(recv_buffer);
 
-                        if (description == NULL) 
-                                asprintf(&output_message, "%.f", counter_value);
-                        else
-                                asprintf(&output_message,"%s = %.f",  description, counter_value);
-                        asprintf(&perfdata,"'%s'=%.f",  description, counter_value);
-        
-                        if (critical_value > warning_value) {        /* Normal thresholds */
-                                if(check_critical_value==TRUE && counter_value >= critical_value)
-                                        return_code=STATE_CRITICAL;
-                                else if (check_warning_value==TRUE && counter_value >= warning_value)
-                                        return_code=STATE_WARNING;      
-                                else
-                                        return_code=STATE_OK;   
-                        } 
-                        else {                                       /* inverse thresholds */
-                                return_code=STATE_OK;
-                                if(check_critical_value==TRUE && counter_value <= critical_value)
-                                        return_code=STATE_CRITICAL;
-                                else if (check_warning_value==TRUE && counter_value <= warning_value)
-                                        return_code=STATE_WARNING;      
-                        }
+                /* 
+                CHECK_COUNTER has been modified to provide extensive perfdata information.
+                In order to do this, some modifications have been done to the code
+                and some constraints have been introduced.
+                
+                1) For the sake of simplicity of the code, perfdata information will only be 
+                 provided when the "description" field is added. 
+                
+                2) If the counter you're going to measure is percent-based, the code will detect
+                 the percent sign in its name and will attribute minimum (0%) and maximum (100%) 
+                 values automagically, as well the ¨%" sign to graph units.
+
+                3) OTOH, if the counter is "absolute", you'll have to provide the following
+                 the counter unit - that is, the dimensions of the counter you're getting. Examples:
+                 pages/s, packets transferred, etc.
+
+                4) If you want, you may provide the minimum and maximum values to expect. They aren't mandatory,
+                 but once specified they MUST have the same order of magnitude and units of -w and -c; otherwise.
+                 strange things will happen when you make graphs of your data.
+                */
+
+                if (value_list == NULL)
+                        output_message = strdup (_("No counter specified"));
+                else
+                {
+                        preparelist (value_list);       /* replace , between services with & to send the request */
+                        isPercent = (strchr (value_list, '%') != NULL);
+
+                        strtok (value_list, "&");       /* burn the first parameters */
+                        description = strtok (NULL, "&");
+                        counter_unit = strtok (NULL, "&");
+                        asprintf (&send_buffer, "%s&8&%s", req_password, value_list);
+                        fetch_data (server_address, server_port, send_buffer);
+                        counter_value = atof (recv_buffer);
+
+
+                        if (description == NULL)
+                        asprintf (&output_message, "%.f", counter_value);
+                        else if (isPercent)
+                             {  
+                                counter_unit = strdup (_("%"));
+                                allRight = TRUE;
+                             }
+
+                        if ((counter_unit != NULL) && (!allRight))
+                        {       
+                                minval = strtok (NULL, "&");
+                                maxval = strtok (NULL, "&");
+
+                                /* All parameters specified. Let's check the numbers */
+
+                                fminval = (minval != NULL) ? strtod (minval, &errcvt) : -1;
+                                fmaxval = (minval != NULL) ? strtod (maxval, &errcvt) : -1;
+
+                                if ((fminval == 0) && (minval == errcvt))
+                                        output_message = strdup (_("Minimum value contains non-numbers"));
+                                else
+                                {
+                                        if ((fmaxval == 0) && (maxval == errcvt))
+                                                output_message = strdup (_("Maximum value contains non-numbers"));
+                                        else
+                                                allRight = TRUE;        /* Everything is OK. */
+
+                                }
+                        }
+                        else if ((counter_unit == NULL) && (description != NULL))
+                                output_message = strdup (_("No unit counter specified"));
+
+                        if (allRight)
+                        {
+                                /* Let's format the output string, finally... */
+
+                                asprintf (&output_message, "%s = %.2f %s", description, counter_value, counter_unit);
+                                output_message = strcat (output_message, "|");
+                                output_message = strcat (output_message,
+                                                        fperfdata (description, counter_value, counter_unit,
+                                                                   1, warning_value, 1, critical_value,
+                                                                   (!(isPercent) && (minval != NULL)), fminval,
+                                                                   (!(isPercent) && (minval != NULL)), fmaxval));
+                        }
                 }
-                break;
 
+                if (critical_value > warning_value)
+                {                       /* Normal thresholds */
+                        if (check_critical_value == TRUE && counter_value >= critical_value)
+                             return_code = STATE_CRITICAL;
+                        else if (check_warning_value == TRUE && counter_value >= warning_value)
+                                return_code = STATE_WARNING;
+                             else
+                                return_code = STATE_OK;
+                }
+                else
+                {                       /* inverse thresholds */
+                        return_code = STATE_OK;
+                        if (check_critical_value == TRUE && counter_value <= critical_value)
+                             return_code = STATE_CRITICAL;
+                        else if (check_warning_value == TRUE && counter_value <= warning_value)
+                                    return_code = STATE_WARNING;
+                }
+        break;
+                
         case CHECK_FILEAGE:
 
                 if (value_list==NULL)