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Author SHA1 Message Date
2c64843205 Ajout des graph pour l'optimisation 2024-10-14 18:33:54 +02:00
1650210be8 Ajout du graph de set stats ping 2024-10-13 18:14:36 +02:00
e62fe22071 Premier commit
Co-authored-by: Côme Thuret
2024-09-17 12:13:39 +02:00
6 changed files with 352 additions and 0 deletions

256
Optimisation/stats.c Normal file
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#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 : ");
}
}

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compte_rendu.md Normal file
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# 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 décran 2024-10-14 182936.png" />
**while_stat**
<br>
```M = 4```
<br>
<img src="./src/Capture décran 2024-10-14 182719.png" />

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src/diagramme.png Normal file

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