vnfs/VESreporting_vFW5.0/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
  25 #include "evel.h"
  26
  27 #define BUFSIZE 128
  28 #define READ_INTERVAL 10
  29
  30 typedef struct dummy_vpp_metrics_struct {
  31   int bytes_in;
  32   int bytes_out;
  33   int packets_in;
  34   int packets_out;
  35 } vpp_metrics_struct;
  36
  37 void read_vpp_metrics(vpp_metrics_struct *, char *);
  38
  39 unsigned long long epoch_start = 0;
  40
  41
  42 int main(int argc, char** argv)
  43 {
  44   EVEL_ERR_CODES evel_rc = EVEL_SUCCESS;
  45   EVENT_MEASUREMENT* vpp_m = NULL;
  46   EVENT_HEADER* vpp_m_header = NULL;
  47   int bytes_in_this_round;
  48   int bytes_out_this_round;
  49   int packets_in_this_round;
  50   int packets_out_this_round;
  51   vpp_metrics_struct* last_vpp_metrics = malloc(sizeof(vpp_metrics_struct));
  52   vpp_metrics_struct* curr_vpp_metrics = malloc(sizeof(vpp_metrics_struct));
  53   struct timeval time_val;
  54   //time_t start_epoch;
  55   //time_t last_epoch;
  56   char hostname[BUFSIZE];
  57   char* fqdn = argv[1];
  58   int port = atoi(argv[2]);
  59   char* vnic = argv[3];
  60   MEASUREMENT_VNIC_PERFORMANCE * vnic_performance = NULL;
  61   //struct timeval tv_start;
  62
  63   printf("\nVector Packet Processing (VPP) measurement collection\n");
  64   fflush(stdout);
  65
  66   if (argc != 4)
  67   {
  68     fprintf(stderr, "Usage: %s <FQDN>|<IP address> <port> <interface>\n", argv[0]);
  69     exit(-1);
  70   }
  71
  72   /**************************************************************************/
  73   /* Initialize                                                             */
  74   /**************************************************************************/
  75   if(evel_initialize(fqdn,                         /* FQDN                  */
  76                      port,                         /* Port                  */
  77                      NULL,                         /* optional path         */
  78                      NULL,                         /* optional topic        */
  79                      0,                            /* HTTPS?                */
  80                      "",                           /* Username              */
  81                      "",                           /* Password              */
  82                      EVEL_SOURCE_VIRTUAL_MACHINE,  /* Source type           */
  83                      "vFirewall",                  /* Role                  */
  84                      1))                           /* Verbosity             */
  85   {
  86     fprintf(stderr, "\nFailed to initialize the EVEL library!!!\n");
  87     exit(-1);
  88   }
  89   else
  90   {
  91     printf("\nInitialization completed\n");
  92   }
  93
  94   gethostname(hostname, BUFSIZE);
  95   memset(last_vpp_metrics, 0, sizeof(vpp_metrics_struct));
  96   read_vpp_metrics(last_vpp_metrics, vnic);
  97   gettimeofday(&time_val, NULL);
  98   epoch_start = time_val.tv_sec * 1000000 + time_val.tv_usec;
  99   sleep(READ_INTERVAL);
 100
 101   /***************************************************************************/
 102   /* Collect metrics from the VNIC                                           */
 103   /***************************************************************************/
 104   while(1) {
 105     memset(curr_vpp_metrics, 0, sizeof(vpp_metrics_struct));
 106     read_vpp_metrics(curr_vpp_metrics, vnic);
 107
 108     if(curr_vpp_metrics->bytes_in - last_vpp_metrics->bytes_in > 0) {
 109       bytes_in_this_round = curr_vpp_metrics->bytes_in - last_vpp_metrics->bytes_in;
 110     }
 111     else {
 112       bytes_in_this_round = 0;
 113     }
 114     if(curr_vpp_metrics->bytes_out - last_vpp_metrics->bytes_out > 0) {
 115       bytes_out_this_round = curr_vpp_metrics->bytes_out - last_vpp_metrics->bytes_out;
 116     }
 117     else {
 118       bytes_out_this_round = 0;
 119     }
 120     if(curr_vpp_metrics->packets_in - last_vpp_metrics->packets_in > 0) {
 121       packets_in_this_round = curr_vpp_metrics->packets_in - last_vpp_metrics->packets_in;
 122     }
 123     else {
 124       packets_in_this_round = 0;
 125     }
 126     if(curr_vpp_metrics->packets_out - last_vpp_metrics->packets_out > 0) {
 127       packets_out_this_round = curr_vpp_metrics->packets_out - last_vpp_metrics->packets_out;
 128     }
 129     else {
 130       packets_out_this_round = 0;
 131     }
 132
 133     vpp_m = evel_new_measurement(READ_INTERVAL);
 134     vnic_performance = (MEASUREMENT_VNIC_PERFORMANCE *)evel_measurement_new_vnic_performance("eth0", "true");
 135     evel_meas_vnic_performance_add(vpp_m, vnic_performance);
 136
 137     if(vpp_m != NULL) {
 138       printf("New measurement report created...\n");
 139
 140
 141       evel_vnic_performance_rx_total_pkt_acc_set(vnic_performance, packets_in_this_round);
 142       evel_vnic_performance_tx_total_pkt_acc_set(vnic_performance, packets_out_this_round);
 143
 144       evel_vnic_performance_rx_octets_acc_set(vnic_performance, bytes_in_this_round);
 145       evel_vnic_performance_tx_octets_acc_set(vnic_performance, bytes_out_this_round);
 146
 147       /***************************************************************************/
 148       /* Set parameters in the MEASUREMENT header packet                         */
 149       /***************************************************************************/
 150       struct timeval tv_now;
 151       gettimeofday(&tv_now, NULL);
 152       unsigned long long epoch_now = tv_now.tv_usec + 1000000 * tv_now.tv_sec;
 153
 154       //last_epoch = start_epoch + READ_INTERVAL * 1000000;
 155       vpp_m_header = (EVENT_HEADER *)vpp_m;
 156       //vpp_m_header->start_epoch_microsec = start_epoch;
 157       //vpp_m_header->last_epoch_microsec = last_epoch;
 158       evel_start_epoch_set(&vpp_m->header, epoch_start);
 159       evel_last_epoch_set(&vpp_m->header, epoch_now);
 160       epoch_start = epoch_now;
 161
 162       strcpy(vpp_m_header->reporting_entity_id.value, "No UUID available");
 163       strcpy(vpp_m_header->reporting_entity_name, hostname);
 164       evel_rc = evel_post_event(vpp_m_header);
 165
 166       if(evel_rc == EVEL_SUCCESS) {
 167         printf("Measurement report correctly sent to the collector!\n");
 168       }
 169       else {
 170         printf("Post failed %d (%s)\n", evel_rc, evel_error_string());
 171       }
 172     }
 173     else {
 174       printf("New measurement report failed (%s)\n", evel_error_string());
 175     }
 176
 177     last_vpp_metrics->bytes_in = curr_vpp_metrics->bytes_in;
 178     last_vpp_metrics->bytes_out = curr_vpp_metrics->bytes_out;
 179     last_vpp_metrics->packets_in = curr_vpp_metrics->packets_in;
 180     last_vpp_metrics->packets_out = curr_vpp_metrics->packets_out;
 181     //gettimeofday(&time_val, NULL);
 182     //start_epoch = time_val.tv_sec * 1000000 + time_val.tv_usec;
 183
 184     sleep(READ_INTERVAL);
 185   }
 186
 187   /***************************************************************************/
 188   /* Terminate                                                               */
 189   /***************************************************************************/
 190   sleep(1);
 191   free(last_vpp_metrics);
 192   free(curr_vpp_metrics);
 193   evel_terminate();
 194   printf("Terminated\n");
 195
 196   return 0;
 197 }
 198
 199 void read_vpp_metrics(vpp_metrics_struct *vpp_metrics, char *vnic) {
 200   // Define an array of char that contains the parameters of the unix 'cut' command
 201   char* params[] = {"-f3", "-f11", "-f4", "-f12"};
 202   // Define the unix command to execute in order to read metrics from the vNIC
 203   char* cmd_prefix = "sudo cat /proc/net/dev | grep \"";
 204   char* cmd_mid = "\" | tr -s \' \' | cut -d\' \' ";
 205   char cmd[BUFSIZE];
 206   // Define other variables
 207   char buf[BUFSIZE];            /* buffer used to store VPP metrics     */
 208   int temp[] = {0, 0, 0, 0};    /* temp array that contains VPP values  */
 209   FILE *fp;                     /* file descriptor to pipe cmd to shell */
 210   int i;
 211
 212   for(i = 0; i < 4; i++) {
 213     // Clear buffers
 214     memset(buf, 0, BUFSIZE);
 215     memset(cmd, 0, BUFSIZE);
 216     // Build shell command to read metrics from the vNIC
 217     strcat(cmd, cmd_prefix);
 218     strcat(cmd, vnic);
 219     strcat(cmd, cmd_mid);
 220     strcat(cmd, params[i]);
 221
 222     // Open a pipe and read VPP values
 223     if ((fp = popen(cmd, "r")) == NULL) {
 224         printf("Error opening pipe!\n");
 225         return;
 226     }
 227
 228     while (fgets(buf, BUFSIZE, fp) != NULL);
 229     temp[i] = atoi(buf);
 230
 231     if(pclose(fp))  {
 232         printf("Command not found or exited with error status\n");
 233         return;
 234     }
 235   }
 236
 237   // Store metrics read from the vNIC in the struct passed from the main function
 238   vpp_metrics->bytes_in = temp[0];
 239   vpp_metrics->bytes_out = temp[1];
 240   vpp_metrics->packets_in = temp[2];
 241   vpp_metrics->packets_out = temp[3];
 242 }