vnfs/VESreporting_vLB5.0/vpp_measurement_reporter.c

   1
   2 /*************************************************************************//**
   3  *
   4  * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
   5  *
   6  * Licensed under the Apache License, Version 2.0 (the "License");
   7  * you may not use this file except in compliance with the License.
   8  * You may obtain a copy of the License at
   9  *        http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  *
  17  ****************************************************************************/
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <unistd.h>
  22 #include <string.h>
  23 #include <sys/time.h>
  24 #include <math.h>
  25
  26 #include "evel.h"
  27
  28 #define BUFSIZE 128
  29 #define READ_INTERVAL 10
  30
  31 typedef struct dummy_vpp_metrics_struct {
  32   int bytes_in;
  33   int bytes_out;
  34   int packets_in;
  35   int packets_out;
  36 } vpp_metrics_struct;
  37
  38 void read_vpp_metrics(vpp_metrics_struct *, char *);
  39
  40 unsigned long long epoch_start = 0;
  41
  42
  43 #ifdef DOCKER
  44 int measure_traffic()
  45 {
  46
  47   EVEL_ERR_CODES evel_rc = EVEL_SUCCESS;
  48   FILE *fp;
  49   int status;
  50   char count[10];
  51   time_t rawtime;
  52   struct tm * timeinfo;
  53   char period [21];
  54   char cmd [100];
  55   int concurrent_sessions = 0;
  56   int configured_entities = 0;
  57   double mean_request_latency = 0;
  58   double measurement_interval = 1;
  59   double memory_configured = 0;
  60   double memory_used = 0;
  61   int request_rate=0;
  62   char secs [3];
  63   int sec;
  64   double loadavg;
  65
  66   printf("Checking app traffic\n");
  67   time (&rawtime);
  68   timeinfo = localtime (&rawtime);
  69   strftime(period,21,"%d/%b/%Y:%H:%M:",timeinfo);
  70   strftime(secs,3,"%S",timeinfo);
  71   sec = atoi(secs);
  72   if (sec == 0) sec = 59;
  73   sprintf(secs, "%02d", sec);
  74   strncat(period, secs, 21);
  75   // ....x....1....x....2.
  76   // 15/Oct/2016:17:51:19
  77   strcpy(cmd, "sudo docker logs vHello | grep -c ");
  78   strncat(cmd, period, 100);
  79
  80   fp = popen(cmd, "r");
  81   if (fp == NULL) {
  82     EVEL_ERROR("popen failed to execute command");
  83   }
  84
  85   if (fgets(count, 10, fp) != NULL) {
  86     request_rate = atoi(count);
  87     printf("Reporting request rate for second: %s as %d\n", period, request_rate);
  88
  89     }
  90     else {
  91       EVEL_ERROR("New Measurement failed");
  92     }
  93     printf("Processed measurement\n");
  94
  95   status = pclose(fp);
  96   if (status == -1) {
  97     EVEL_ERROR("pclose returned an error");
  98   }
  99   return request_rate;
 100 }
 101
 102 #endif
 103
 104
 105 int main(int argc, char** argv)
 106 {
 107   EVEL_ERR_CODES evel_rc = EVEL_SUCCESS;
 108   EVENT_MEASUREMENT* vpp_m = NULL;
 109   EVENT_HEADER* vpp_m_header = NULL;
 110   int bytes_in_this_round;
 111   int bytes_out_this_round;
 112   int packets_in_this_round;
 113   int packets_out_this_round;
 114   vpp_metrics_struct* last_vpp_metrics = malloc(sizeof(vpp_metrics_struct));
 115   vpp_metrics_struct* curr_vpp_metrics = malloc(sizeof(vpp_metrics_struct));
 116   struct timeval time_val;
 117   //time_t start_epoch;
 118   //time_t last_epoch;
 119   char hostname[BUFSIZE];
 120   char* fqdn = argv[1];
 121   int port = atoi(argv[2]);
 122   char* vnic = argv[3];
 123   MEASUREMENT_VNIC_PERFORMANCE * vnic_performance = NULL;
 124
 125   printf("\nVector Packet Processing (VPP) measurement collection\n");
 126   fflush(stdout);
 127
 128   if (argc != 4)
 129   {
 130     fprintf(stderr, "Usage: %s <FQDN>|<IP address> <port> <interface>\n", argv[0]);
 131     exit(-1);
 132   }
 133   srand(time(NULL));
 134
 135   /**************************************************************************/
 136   /* Initialize                                                             */
 137   /**************************************************************************/
 138   if(evel_initialize(fqdn,                         /* FQDN                  */
 139                      port,                         /* Port                  */
 140                      NULL,                         /* optional path         */
 141                      NULL,                         /* optional topic        */
 142                      0,                            /* HTTPS?                */
 143                      NULL,                         /* cert file             */
 144                      NULL,                         /* key  file             */
 145                      NULL,                         /* ca   info             */
 146                      NULL,                         /* ca   file             */
 147                      0,                            /* verify peer           */
 148                      0,                            /* verify host           */
 149                      "",                           /* Username              */
 150                      "",                           /* Password              */
 151                      NULL,                         /* Source IP             */
 152                      EVEL_SOURCE_VIRTUAL_MACHINE,  /* Source type           */
 153                      "vLoadBalancer",              /* Role                  */
 154                      1))                           /* Verbosity             */
 155   {
 156     fprintf(stderr, "\nFailed to initialize the EVEL library!!!\n");
 157     exit(-1);
 158   }
 159   else
 160   {
 161     printf("\nInitialization completed\n");
 162   }
 163
 164   gethostname(hostname, BUFSIZE);
 165   memset(last_vpp_metrics, 0, sizeof(vpp_metrics_struct));
 166   read_vpp_metrics(last_vpp_metrics, vnic);
 167   gettimeofday(&time_val, NULL);
 168   epoch_start = time_val.tv_sec * 1000000 + time_val.tv_usec;
 169   sleep(READ_INTERVAL);
 170
 171   /***************************************************************************/
 172   /* Collect metrics from the VNIC                                           */
 173   /***************************************************************************/
 174   while(1) {
 175     // Read the number of vDNSs currently active
 176     int active_dns = 0;
 177     FILE* fd = fopen("active_dns.txt", "r");
 178     while(!feof(fd)) {
 179       if(fscanf(fd, "%d", &active_dns) != 1) /* Avoid infinite loops if the file doesn't contain exactly one number */
 180         break;
 181     }
 182
 183     if(fclose(fd))  {
 184       printf("Error when closing file\n");
 185       return 1;
 186     }
 187
 188     memset(curr_vpp_metrics, 0, sizeof(vpp_metrics_struct));
 189     read_vpp_metrics(curr_vpp_metrics, vnic);
 190
 191     if(active_dns > 0 && (curr_vpp_metrics->bytes_in - last_vpp_metrics->bytes_in > 0)) {
 192       bytes_in_this_round = (int) round((curr_vpp_metrics->bytes_in - last_vpp_metrics->bytes_in) / active_dns);
 193     }
 194     else {
 195       bytes_in_this_round = 0;
 196     }
 197     if(active_dns > 0 && (curr_vpp_metrics->bytes_out - last_vpp_metrics->bytes_out > 0)) {
 198       bytes_out_this_round = (int) round((curr_vpp_metrics->bytes_out - last_vpp_metrics->bytes_out) / active_dns);
 199     }
 200     else {
 201       bytes_out_this_round = 0;
 202     }
 203     if(active_dns > 0 && (curr_vpp_metrics->packets_in - last_vpp_metrics->packets_in > 0)) {
 204       packets_in_this_round = (int) round((curr_vpp_metrics->packets_in - last_vpp_metrics->packets_in) / active_dns);
 205     }
 206     else {
 207       packets_in_this_round = 0;
 208     }
 209     if(active_dns > 0 && (curr_vpp_metrics->packets_out - last_vpp_metrics->packets_out > 0)) {
 210       packets_out_this_round = (int) round((curr_vpp_metrics->packets_out - last_vpp_metrics->packets_out) / active_dns);
 211     }
 212     else {
 213       packets_out_this_round = 0;
 214     }
 215
 216     vpp_m = evel_new_measurement(READ_INTERVAL,"vLoadBalancer","TrafficStats_1.2.3.4");
 217     vnic_performance = (MEASUREMENT_VNIC_PERFORMANCE *)evel_measurement_new_vnic_performance("eth0", "true");
 218     evel_meas_vnic_performance_add(vpp_m, vnic_performance);
 219
 220     if(vpp_m != NULL) {
 221       printf("New measurement report created...\n");
 222
 223       evel_measurement_type_set(vpp_m, "HTTP request rate");
 224       evel_measurement_request_rate_set(vpp_m, rand()%10000);
 225
 226       evel_vnic_performance_rx_total_pkt_delta_set(vnic_performance, packets_in_this_round);
 227       evel_vnic_performance_tx_total_pkt_delta_set(vnic_performance, packets_out_this_round);
 228
 229       evel_vnic_performance_rx_octets_delta_set(vnic_performance, bytes_in_this_round);
 230       evel_vnic_performance_tx_octets_delta_set(vnic_performance, bytes_out_this_round);
 231
 232       /***************************************************************************/
 233       /* Set parameters in the MEASUREMENT header packet                         */
 234       /***************************************************************************/
 235       struct timeval tv_now;
 236       gettimeofday(&tv_now, NULL);
 237       unsigned long long epoch_now = tv_now.tv_usec + 1000000 * tv_now.tv_sec;
 238
 239       //last_epoch = start_epoch + READ_INTERVAL * 1000000;
 240       vpp_m_header = (EVENT_HEADER *)vpp_m;
 241       //vpp_m_header->start_epoch_microsec = start_epoch;
 242       //vpp_m_header->last_epoch_microsec = last_epoch;
 243       evel_start_epoch_set(&vpp_m->header, epoch_start);
 244       evel_last_epoch_set(&vpp_m->header, epoch_now);
 245       epoch_start = epoch_now;
 246
 247       evel_nfcnamingcode_set(&vpp_m->header, "vVNF");
 248       evel_nfnamingcode_set(&vpp_m->header, "vVNF");
 249       //strcpy(vpp_m_header->reporting_entity_id.value, "No UUID available");
 250       //strcpy(vpp_m_header->reporting_entity_name, hostname);
 251       evel_reporting_entity_name_set(&vpp_m->header, "lbll");
 252       evel_reporting_entity_id_set(&vpp_m->header, "No UUID available");
 253       evel_rc = evel_post_event(vpp_m_header);
 254
 255       if(evel_rc == EVEL_SUCCESS) {
 256         printf("Measurement report correctly sent to the collector!\n");
 257       }
 258       else {
 259         printf("Post failed %d (%s)\n", evel_rc, evel_error_string());
 260       }
 261     }
 262     else {
 263       printf("New measurement report failed (%s)\n", evel_error_string());
 264     }
 265
 266     last_vpp_metrics->bytes_in = curr_vpp_metrics->bytes_in;
 267     last_vpp_metrics->bytes_out = curr_vpp_metrics->bytes_out;
 268     last_vpp_metrics->packets_in = curr_vpp_metrics->packets_in;
 269     last_vpp_metrics->packets_out = curr_vpp_metrics->packets_out;
 270     //gettimeofday(&time_val, NULL);
 271     //start_epoch = time_val.tv_sec * 1000000 + time_val.tv_usec;
 272
 273     sleep(READ_INTERVAL);
 274   }
 275
 276   /***************************************************************************/
 277   /* Terminate                                                               */
 278   /***************************************************************************/
 279   sleep(1);
 280   evel_free_measurement(vpp_m);
 281   free(last_vpp_metrics);
 282   free(curr_vpp_metrics);
 283   evel_terminate();
 284   printf("Terminated\n");
 285
 286   return 0;
 287 }
 288
 289 void read_vpp_metrics(vpp_metrics_struct *vpp_metrics, char *vnic) {
 290   // Define an array of char that contains the parameters of the unix 'cut' command
 291   char* params[] = {"-f3", "-f11", "-f4", "-f12"};
 292   // Define the unix command to execute in order to read metrics from the vNIC
 293   char* cmd_prefix = "sudo cat /proc/net/dev | grep \"";
 294   char* cmd_mid = "\" | tr -s \' \' | cut -d\' \' ";
 295   char cmd[BUFSIZE];
 296   // Define other variables
 297   char buf[BUFSIZE];            /* buffer used to store VPP metrics     */
 298   int temp[] = {0, 0, 0, 0};    /* temp array that contains VPP values  */
 299   FILE *fp;                     /* file descriptor to pipe cmd to shell */
 300   int i;
 301
 302   for(i = 0; i < 4; i++) {
 303     // Clear buffers
 304     memset(buf, 0, BUFSIZE);
 305     memset(cmd, 0, BUFSIZE);
 306     // Build shell command to read metrics from the vNIC
 307     strcat(cmd, cmd_prefix);
 308     strcat(cmd, vnic);
 309     strcat(cmd, cmd_mid);
 310     strcat(cmd, params[i]);
 311
 312     // Open a pipe and read VPP values
 313     if ((fp = popen(cmd, "r")) == NULL) {
 314       printf("Error opening pipe!\n");
 315       return;
 316     }
 317
 318     while (fgets(buf, BUFSIZE, fp) != NULL);
 319     temp[i] = atoi(buf);
 320
 321     if(pclose(fp))  {
 322       printf("Command not found or exited with error status\n");
 323       return;
 324     }
 325   }
 326
 327   // Store metrics read from the vNIC in the struct passed from the main function
 328   vpp_metrics->bytes_in = temp[0];
 329   vpp_metrics->bytes_out = temp[1];
 330   vpp_metrics->packets_in = temp[2];
 331   vpp_metrics->packets_out = temp[3];
 332 }