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                      "",                           /* Username              */
 144                      "",                           /* Password              */
 145                      EVEL_SOURCE_VIRTUAL_MACHINE,  /* Source type           */
 146                      "vLoadBalancer",              /* Role                  */
 147                      1))                           /* Verbosity             */
 148   {
 149     fprintf(stderr, "\nFailed to initialize the EVEL library!!!\n");
 150     exit(-1);
 151   }
 152   else
 153   {
 154     printf("\nInitialization completed\n");
 155   }
 156
 157   gethostname(hostname, BUFSIZE);
 158   memset(last_vpp_metrics, 0, sizeof(vpp_metrics_struct));
 159   read_vpp_metrics(last_vpp_metrics, vnic);
 160   gettimeofday(&time_val, NULL);
 161   epoch_start = time_val.tv_sec * 1000000 + time_val.tv_usec;
 162   sleep(READ_INTERVAL);
 163
 164   /***************************************************************************/
 165   /* Collect metrics from the VNIC                                           */
 166   /***************************************************************************/
 167   while(1) {
 168     // Read the number of vDNSs currently active
 169     int active_dns = 0;
 170     FILE* fd = fopen("active_dns.txt", "r");
 171     while(!feof(fd)) {
 172       if(fscanf(fd, "%d", &active_dns) != 1) /* Avoid infinite loops if the file doesn't contain exactly one number */
 173         break;
 174     }
 175
 176     if(fclose(fd))  {
 177       printf("Error when closing file\n");
 178       return 1;
 179     }
 180
 181     memset(curr_vpp_metrics, 0, sizeof(vpp_metrics_struct));
 182     read_vpp_metrics(curr_vpp_metrics, vnic);
 183
 184     if(active_dns > 0 && (curr_vpp_metrics->bytes_in - last_vpp_metrics->bytes_in > 0)) {
 185       bytes_in_this_round = (int) round((curr_vpp_metrics->bytes_in - last_vpp_metrics->bytes_in) / active_dns);
 186     }
 187     else {
 188       bytes_in_this_round = 0;
 189     }
 190     if(active_dns > 0 && (curr_vpp_metrics->bytes_out - last_vpp_metrics->bytes_out > 0)) {
 191       bytes_out_this_round = (int) round((curr_vpp_metrics->bytes_out - last_vpp_metrics->bytes_out) / active_dns);
 192     }
 193     else {
 194       bytes_out_this_round = 0;
 195     }
 196     if(active_dns > 0 && (curr_vpp_metrics->packets_in - last_vpp_metrics->packets_in > 0)) {
 197       packets_in_this_round = (int) round((curr_vpp_metrics->packets_in - last_vpp_metrics->packets_in) / active_dns);
 198     }
 199     else {
 200       packets_in_this_round = 0;
 201     }
 202     if(active_dns > 0 && (curr_vpp_metrics->packets_out - last_vpp_metrics->packets_out > 0)) {
 203       packets_out_this_round = (int) round((curr_vpp_metrics->packets_out - last_vpp_metrics->packets_out) / active_dns);
 204     }
 205     else {
 206       packets_out_this_round = 0;
 207     }
 208
 209     vpp_m = evel_new_measurement(READ_INTERVAL,"vLoadBalancer","TrafficStats_1.2.3.4");
 210     vnic_performance = (MEASUREMENT_VNIC_PERFORMANCE *)evel_measurement_new_vnic_performance("eth0", "true");
 211     evel_meas_vnic_performance_add(vpp_m, vnic_performance);
 212
 213     if(vpp_m != NULL) {
 214       printf("New measurement report created...\n");
 215
 216       evel_measurement_type_set(vpp_m, "HTTP request rate");
 217       evel_measurement_request_rate_set(vpp_m, rand()%10000);
 218
 219       evel_vnic_performance_rx_total_pkt_delta_set(vnic_performance, packets_in_this_round);
 220       evel_vnic_performance_tx_total_pkt_delta_set(vnic_performance, packets_out_this_round);
 221
 222       evel_vnic_performance_rx_octets_delta_set(vnic_performance, bytes_in_this_round);
 223       evel_vnic_performance_tx_octets_delta_set(vnic_performance, bytes_out_this_round);
 224
 225       /***************************************************************************/
 226       /* Set parameters in the MEASUREMENT header packet                         */
 227       /***************************************************************************/
 228       struct timeval tv_now;
 229       gettimeofday(&tv_now, NULL);
 230       unsigned long long epoch_now = tv_now.tv_usec + 1000000 * tv_now.tv_sec;
 231
 232       //last_epoch = start_epoch + READ_INTERVAL * 1000000;
 233       vpp_m_header = (EVENT_HEADER *)vpp_m;
 234       //vpp_m_header->start_epoch_microsec = start_epoch;
 235       //vpp_m_header->last_epoch_microsec = last_epoch;
 236       evel_start_epoch_set(&vpp_m->header, epoch_start);
 237       evel_last_epoch_set(&vpp_m->header, epoch_now);
 238       epoch_start = epoch_now;
 239
 240       evel_nfcnamingcode_set(&vpp_m->header, "vVNF");
 241       evel_nfnamingcode_set(&vpp_m->header, "vVNF");
 242       //strcpy(vpp_m_header->reporting_entity_id.value, "No UUID available");
 243       //strcpy(vpp_m_header->reporting_entity_name, hostname);
 244       evel_reporting_entity_name_set(&vpp_m->header, "lbll");
 245       evel_reporting_entity_id_set(&vpp_m->header, "No UUID available");
 246       evel_rc = evel_post_event(vpp_m_header);
 247
 248       if(evel_rc == EVEL_SUCCESS) {
 249         printf("Measurement report correctly sent to the collector!\n");
 250       }
 251       else {
 252         printf("Post failed %d (%s)\n", evel_rc, evel_error_string());
 253       }
 254     }
 255     else {
 256       printf("New measurement report failed (%s)\n", evel_error_string());
 257     }
 258
 259     last_vpp_metrics->bytes_in = curr_vpp_metrics->bytes_in;
 260     last_vpp_metrics->bytes_out = curr_vpp_metrics->bytes_out;
 261     last_vpp_metrics->packets_in = curr_vpp_metrics->packets_in;
 262     last_vpp_metrics->packets_out = curr_vpp_metrics->packets_out;
 263     //gettimeofday(&time_val, NULL);
 264     //start_epoch = time_val.tv_sec * 1000000 + time_val.tv_usec;
 265
 266     sleep(READ_INTERVAL);
 267   }
 268
 269   /***************************************************************************/
 270   /* Terminate                                                               */
 271   /***************************************************************************/
 272   sleep(1);
 273   evel_free_measurement(vpp_m);
 274   free(last_vpp_metrics);
 275   free(curr_vpp_metrics);
 276   evel_terminate();
 277   printf("Terminated\n");
 278
 279   return 0;
 280 }
 281
 282 void read_vpp_metrics(vpp_metrics_struct *vpp_metrics, char *vnic) {
 283   // Define an array of char that contains the parameters of the unix 'cut' command
 284   char* params[] = {"-f3", "-f11", "-f4", "-f12"};
 285   // Define the unix command to execute in order to read metrics from the vNIC
 286   char* cmd_prefix = "sudo cat /proc/net/dev | grep \"";
 287   char* cmd_mid = "\" | tr -s \' \' | cut -d\' \' ";
 288   char cmd[BUFSIZE];
 289   // Define other variables
 290   char buf[BUFSIZE];            /* buffer used to store VPP metrics     */
 291   int temp[] = {0, 0, 0, 0};    /* temp array that contains VPP values  */
 292   FILE *fp;                     /* file descriptor to pipe cmd to shell */
 293   int i;
 294
 295   for(i = 0; i < 4; i++) {
 296     // Clear buffers
 297     memset(buf, 0, BUFSIZE);
 298     memset(cmd, 0, BUFSIZE);
 299     // Build shell command to read metrics from the vNIC
 300     strcat(cmd, cmd_prefix);
 301     strcat(cmd, vnic);
 302     strcat(cmd, cmd_mid);
 303     strcat(cmd, params[i]);
 304
 305     // Open a pipe and read VPP values
 306     if ((fp = popen(cmd, "r")) == NULL) {
 307       printf("Error opening pipe!\n");
 308       return;
 309     }
 310
 311     while (fgets(buf, BUFSIZE, fp) != NULL);
 312     temp[i] = atoi(buf);
 313
 314     if(pclose(fp))  {
 315       printf("Command not found or exited with error status\n");
 316       return;
 317     }
 318   }
 319
 320   // Store metrics read from the vNIC in the struct passed from the main function
 321   vpp_metrics->bytes_in = temp[0];
 322   vpp_metrics->bytes_out = temp[1];
 323   vpp_metrics->packets_in = temp[2];
 324   vpp_metrics->packets_out = temp[3];
 325 }