2 /*************************************************************************//**
4 * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
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
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.
17 ****************************************************************************/
29 #define READ_INTERVAL 10
31 typedef struct dummy_vpp_metrics_struct {
38 void read_vpp_metrics(vpp_metrics_struct *, char *);
40 unsigned long long epoch_start = 0;
47 EVEL_ERR_CODES evel_rc = EVEL_SUCCESS;
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;
66 printf("Checking app traffic\n");
68 timeinfo = localtime (&rawtime);
69 strftime(period,21,"%d/%b/%Y:%H:%M:",timeinfo);
70 strftime(secs,3,"%S",timeinfo);
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);
82 EVEL_ERROR("popen failed to execute command");
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);
91 EVEL_ERROR("New Measurement failed");
93 printf("Processed measurement\n");
97 EVEL_ERROR("pclose returned an error");
105 int main(int argc, char** argv)
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;
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;
125 printf("\nVector Packet Processing (VPP) measurement collection\n");
130 fprintf(stderr, "Usage: %s <FQDN>|<IP address> <port> <interface>\n", argv[0]);
135 /**************************************************************************/
137 /**************************************************************************/
138 if(evel_initialize(fqdn, /* FQDN */
140 NULL, /* optional path */
141 NULL, /* optional topic */
145 EVEL_SOURCE_VIRTUAL_MACHINE, /* Source type */
146 "vLoadBalancer", /* Role */
149 fprintf(stderr, "\nFailed to initialize the EVEL library!!!\n");
154 printf("\nInitialization completed\n");
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);
164 /***************************************************************************/
165 /* Collect metrics from the VNIC */
166 /***************************************************************************/
168 // Read the number of vDNSs currently active
170 FILE* fd = fopen("active_dns.txt", "r");
172 if(fscanf(fd, "%d", &active_dns) != 1) /* Avoid infinite loops if the file doesn't contain exactly one number */
177 printf("Error when closing file\n");
181 memset(curr_vpp_metrics, 0, sizeof(vpp_metrics_struct));
182 read_vpp_metrics(curr_vpp_metrics, vnic);
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);
188 bytes_in_this_round = 0;
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);
194 bytes_out_this_round = 0;
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);
200 packets_in_this_round = 0;
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);
206 packets_out_this_round = 0;
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);
214 printf("New measurement report created...\n");
216 evel_measurement_type_set(vpp_m, "HTTP request rate");
217 evel_measurement_request_rate_set(vpp_m, rand()%10000);
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);
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);
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;
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;
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);
248 if(evel_rc == EVEL_SUCCESS) {
249 printf("Measurement report correctly sent to the collector!\n");
252 printf("Post failed %d (%s)\n", evel_rc, evel_error_string());
256 printf("New measurement report failed (%s)\n", evel_error_string());
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;
266 sleep(READ_INTERVAL);
269 /***************************************************************************/
271 /***************************************************************************/
273 evel_free_measurement(vpp_m);
274 free(last_vpp_metrics);
275 free(curr_vpp_metrics);
277 printf("Terminated\n");
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\' \' ";
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 */
295 for(i = 0; i < 4; i++) {
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);
302 strcat(cmd, cmd_mid);
303 strcat(cmd, params[i]);
305 // Open a pipe and read VPP values
306 if ((fp = popen(cmd, "r")) == NULL) {
307 printf("Error opening pipe!\n");
311 while (fgets(buf, BUFSIZE, fp) != NULL);
315 printf("Command not found or exited with error status\n");
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];