Optimisation/stats.c

@@ -1,256 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <string.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <regex.h>
-
-#include "../include/utils.h"
-#include "../include/stats.h"
-#include "../include/db-sqlite.h"
-
-/*
-    -- get_ping_from_temp_log --
-    Desc :
-        Function which get the ping from a temp log containing the last ping did by the program
-    In-param :
-        None
-    Out-param :
-        None
-    Return value :
-        Ping value as a string or NULL if an error occured
-*/
-
-/*@null@*/char* get_ping_from_temp_log(){
-
-    /* Variables */
-    FILE* fd = NULL;
-    char* read_line = NULL;
-    size_t n = 0;
-    size_t nmatch = 2;
-    regex_t *p_reg;
-    regmatch_t* pmatch;
-    char* ping = NULL;
-    int start;
-    int end;
-    size_t size_ping;
-
-    /* regex struct memory allocation */
-    p_reg = (regex_t *) malloc(sizeof(*p_reg));
-    if(p_reg == NULL){
-        return ping; /* NULL */
-    }
-
-    /* Open ping log file */
-    fd = fopen("/var/log/ping-report/last-ping.log","r");
-    if(fd == NULL){
-        free(p_reg);
-        return ping; /* NULL */
-    }
-
-    /* Construct regex to get ping from log file */
-    if(regcomp(p_reg,"time=(.*) ms",REG_EXTENDED) != 0){
-        if(p_reg != NULL){
-            free(p_reg);
-        }
-        (void) fclose(fd);
-        return ping; /* NULL */
-    }
-
-    /* match info memory allocation */
-    pmatch = malloc(sizeof(*pmatch) * nmatch);
-    if(pmatch == NULL){
-        (void) fclose(fd);
-        regfree(p_reg);
-        free(p_reg);
-        return ping; /* NULL */
-    }
-
-    /* Read file */
-    while_stat(getline(&read_line,&n,fd));
-    
-    /* free allocated memory */
-    regfree(p_reg);
-    free(p_reg);
-    free(pmatch);
-    if(read_line != NULL){
-        free(read_line);
-    }
-
-    (void) fclose(fd);
-
-    /* ping may be null, then it must mean that the ping request was lost */
-    return ping;
-}
-
-void while_stat(int test){
-        
-    if(read_line == NULL){
-        return;
-    }
-
-    /* Exec regex to find ping */
-
-    if(regexec(p_reg,read_line,nmatch,pmatch,0) == 0){
-
-        /* Extract ping position from read line */
-        start = (int) pmatch[1].rm_so;
-        end = (int) pmatch[1].rm_eo;
-        size_ping = (size_t) (end - start);
-
-        /* ping string memory allocation */
-        ping = malloc(sizeof(char) * (size_ping+2));
-        if(ping == NULL){
-            free(read_line);
-            read_line = NULL;
-            n = 0;
-            return;
-        }
-
-        /* Create ping string */
-        (void) strncpy(ping, &read_line[start], size_ping);
-        ping[size_ping]='\n';
-        ping[size_ping+1]='\0';
-
-        /* Free memory */
-        free(read_line);
-         read_line = NULL;
-        n = 0;
-        return;
-    }
-
-    free(read_line);
-    read_line = NULL;
-    n = 0;
-    
-    if (test != -1){
-        while_stat(test);
-    }
-}
-
-/*
-    -- write_ping_log --
-    Desc :
-        Function which write a given ping in log file
-    In-param :
-        new_ping : string value of a ping
-    Out-param :
-        None
-    Return value :
-        None
-*/
-void write_ping_log(char* new_ping){
-    
-    /* Variables */
-    FILE* fd;
-
-    /* Open log file */
-    fd = fopen("/var/log/ping-report/all-ping.log","a+");
-    
-    if(fd != NULL){
-        if(new_ping == NULL){
-            new_ping = (char *) malloc(5*sizeof(char));
-            if(new_ping == NULL){
-                (void) fclose(fd);
-                return;
-            }
-            (void) snprintf(new_ping,5*sizeof(char),"LOSS");
-        }
-        (void) fwrite(new_ping, sizeof(char), strlen(new_ping), fd);
-        (void) fclose(fd);
-    }else{
-        perror("write ping : ");
-    }
-
-    free(new_ping);
-}
-
-/*
-    -- set_stats_ping --
-    Desc :
-        Function which calculate statistics about ping values, from log file.
-    In-param :
-        None
-    Out-param :
-        None
-    Return value :
-        None
-*/
-void set_stats_ping(){
-    
-    /* Variables */
-    FILE* fd;
-    /* Open log file */
-    fd = fopen("/var/log/ping-report/all-ping.log","r");
-    
-    if(fd != NULL){
-        /* Stats variables */
-        double ping = 0.0;
-        double sum = 0.0;
-        double max = 0.0;
-        double min = 100.0;
-        double mean = 0.0;
-        int nb_high = 0;
-        int nb_loss = 0;
-        int nb_ping = 0;
-        char* read_line = NULL;    
-        size_t n = 0;
-    
-        /* Read file */
-        while(getline(&read_line,&n,fd) != -1){
-            
-            /* Check getline error */
-            if(read_line == NULL){
-                break;
-            }
-
-            /* Check if the ping is flagged as LOSS */
-            if(strcmp(read_line,"LOSS") == 0){
-                nb_loss++;
-            }else{
-                /* Evaluate the ping as a double */
-                ping = strtod(read_line,NULL);
-                /* Test null ping */
-                if(ping < 0.1){
-                    /* Ignore null ping */
-                }else{
-                    /* Number of ping readed (for mean calculation) */
-                    nb_ping++;
-                    /* Max ping */
-                    if(ping > max){
-                        max = ping;
-                    }
-                    /* Min ping */
-                    if(ping < min){
-                        min = ping;
-                    }
-                    /* Number of ping above 100 ms */
-                    if(ping > 100.0){
-                        nb_high++;
-                    }
-                    /* Sum (for mean calculation) */
-                    sum += ping;
-                }
-            } 
-            free(read_line);
-            n = 0;
-        }
-    
-        /* Mean calculation */
-        mean = sum / (double) nb_ping;
-        (void) fclose(fd);
-
-        insert_hourly_report(mean,max,min,nb_high,nb_loss,nb_ping);
-
-        if(read_line != NULL){
-            free(read_line);
-        }
-
-    }else{
-        perror("stats : ");
-    }
-}
-
-

compte_rendu.md

@@ -1,96 +0,0 @@
-# Compte rendu TD2
-
-## fichier *daemon.c*
-
-**create_daemon**
-<br>
-```M = 4```
-
-**ping_request**
-<br>
-```M = 2```
-
-**send_check**
-<br>
-```M = 4```
-
-**check_keep_working**
-<br>
-```M = 4```
-
-**daemon_work**
-<br>
-```M = 3```
-
-## fichier *db-sqlite.c*
-
-**db_connect**
-<br>
-```M = 1```
-
-**db_disconnect**
-<br>
-```M = 1```
-
-**insert_hourly_report**
-<br>
-```M = 1```
-
-## fichier *ping-report.c*
-
-**main**
-<br>
-```M = 5```
-
-## fichier *stats.c*
-
-**get_ping_from_temp_log**
-<br>
-```M = 15```
-
-Graph :
-<br>
-<img src="./src/Capture_decran_2024-09-17_115202.png" />
-
-**write_ping_log**
-<br>
-```M = 4```
-
-**set_stats_ping**
-<br>
-```M =25```
-
-Graph :
-<br>
-<img src="./src/diagramme.png" />
-
-## fichier *ping-report.c*
-
-**write_pid_file**
-<br>
-```M = 2```
-
-**remove_file**
-<br>
-```M = 1```
-
-## Optimisation
-
-### fichier *stats.c*
-
-**get_ping_from_temp_log**
-Pour optimiser cette fonction, nous avons décidé de retirer la boucle *while* de la fonction pour en faire une autre fonction qui va être appelée dans la fonction principale. Nous avons fait cela car la boucle *while* contenait le plus de chemins, et donc augmentait grandement le score de la complexité cyclomatique.
-
-Graph :
-
-**get_ping_from_temp_log**
-<br>
-```M = 7```
-<br>
-<img src="./src/Capture d’écran 2024-10-14 182936.png" />
-
-**while_stat**
-<br>
-```M = 4```
-<br>
-<img src="./src/Capture d’écran 2024-10-14 182719.png" />