--- /dev/null
+
+/*************************************************************************//**
+ *
+ * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ ****************************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/time.h>
+
+#include "evel.h"
+
+#define BUFSIZE 128
+#define READ_INTERVAL 10
+
+typedef struct dummy_vpp_metrics_struct {
+ int bytes_in;
+ int bytes_out;
+ int packets_in;
+ int packets_out;
+} vpp_metrics_struct;
+
+void read_vpp_metrics(vpp_metrics_struct *, char *);
+
+int main(int argc, char** argv)
+{
+ EVEL_ERR_CODES evel_rc = EVEL_SUCCESS;
+ EVENT_MEASUREMENT* vpp_m = NULL;
+ EVENT_HEADER* vpp_m_header = NULL;
+ int bytes_in_this_round;
+ int bytes_out_this_round;
+ int packets_in_this_round;
+ int packets_out_this_round;
+ vpp_metrics_struct* last_vpp_metrics = malloc(sizeof(vpp_metrics_struct));
+ vpp_metrics_struct* curr_vpp_metrics = malloc(sizeof(vpp_metrics_struct));
+ struct timeval time_val;
+ time_t start_epoch;
+ time_t last_epoch;
+ char hostname[BUFSIZE];
+ char* fqdn = argv[1];
+ int port = atoi(argv[2]);
+ char* vnic = argv[3];
+
+ printf("\nVector Packet Processing (VPP) measurement collection\n");
+ fflush(stdout);
+
+ if (argc != 4)
+ {
+ fprintf(stderr, "Usage: %s <FQDN>|<IP address> <port> <interface>\n", argv[0]);
+ exit(-1);
+ }
+
+ /**************************************************************************/
+ /* Initialize */
+ /**************************************************************************/
+ if(evel_initialize(fqdn, /* FQDN */
+ port, /* Port */
+ NULL, /* optional path */
+ NULL, /* optional topic */
+ 0, /* HTTPS? */
+ "", /* Username */
+ "", /* Password */
+ EVEL_SOURCE_VIRTUAL_MACHINE, /* Source type */
+ "vFirewall", /* Role */
+ 1)) /* Verbosity */
+ {
+ fprintf(stderr, "\nFailed to initialize the EVEL library!!!\n");
+ exit(-1);
+ }
+ else
+ {
+ printf("\nInitialization completed\n");
+ }
+
+ gethostname(hostname, BUFSIZE);
+ memset(last_vpp_metrics, 0, sizeof(vpp_metrics_struct));
+ read_vpp_metrics(last_vpp_metrics, vnic);
+ gettimeofday(&time_val, NULL);
+ start_epoch = time_val.tv_sec * 1000000 + time_val.tv_usec;
+ sleep(READ_INTERVAL);
+
+ /***************************************************************************/
+ /* Collect metrics from the VNIC */
+ /***************************************************************************/
+ while(1) {
+ memset(curr_vpp_metrics, 0, sizeof(vpp_metrics_struct));
+ read_vpp_metrics(curr_vpp_metrics, vnic);
+
+ if(curr_vpp_metrics->bytes_in - last_vpp_metrics->bytes_in > 0) {
+ bytes_in_this_round = curr_vpp_metrics->bytes_in - last_vpp_metrics->bytes_in;
+ }
+ else {
+ bytes_in_this_round = 0;
+ }
+ if(curr_vpp_metrics->bytes_out - last_vpp_metrics->bytes_out > 0) {
+ bytes_out_this_round = curr_vpp_metrics->bytes_out - last_vpp_metrics->bytes_out;
+ }
+ else {
+ bytes_out_this_round = 0;
+ }
+ if(curr_vpp_metrics->packets_in - last_vpp_metrics->packets_in > 0) {
+ packets_in_this_round = curr_vpp_metrics->packets_in - last_vpp_metrics->packets_in;
+ }
+ else {
+ packets_in_this_round = 0;
+ }
+ if(curr_vpp_metrics->packets_out - last_vpp_metrics->packets_out > 0) {
+ packets_out_this_round = curr_vpp_metrics->packets_out - last_vpp_metrics->packets_out;
+ }
+ else {
+ packets_out_this_round = 0;
+ }
+
+ vpp_m = evel_new_measurement(READ_INTERVAL);
+
+ if(vpp_m != NULL) {
+ printf("New measurement report created...\n");
+ evel_measurement_vnic_use_add(vpp_m, /* Pointer to the measurement */
+ vnic, /* ASCII string with the vNIC's ID */
+ packets_in_this_round, /* Packets received */
+ packets_out_this_round, /* Packets transmitted */
+ 0, /* Broadcast packets received */
+ 0, /* Broadcast packets transmitted */
+ bytes_in_this_round, /* Total bytes received */
+ bytes_out_this_round, /* Total bytes transmitted */
+ 0, /* Multicast packets received */
+ 0, /* Multicast packets transmitted */
+ 0, /* Unicast packets received */
+ 0); /* Unicast packets transmitted */
+
+ /***************************************************************************/
+ /* Set parameters in the MEASUREMENT header packet */
+ /***************************************************************************/
+ last_epoch = start_epoch + READ_INTERVAL * 1000000;
+ vpp_m_header = (EVENT_HEADER *)vpp_m;
+ vpp_m_header->start_epoch_microsec = start_epoch;
+ vpp_m_header->last_epoch_microsec = last_epoch;
+ strcpy(vpp_m_header->reporting_entity_id.value, "No UUID available");
+ strcpy(vpp_m_header->reporting_entity_name, hostname);
+ evel_rc = evel_post_event(vpp_m_header);
+
+ if(evel_rc == EVEL_SUCCESS) {
+ printf("Measurement report correctly sent to the collector!\n");
+ }
+ else {
+ printf("Post failed %d (%s)\n", evel_rc, evel_error_string());
+ }
+ }
+ else {
+ printf("New measurement report failed (%s)\n", evel_error_string());
+ }
+
+ last_vpp_metrics->bytes_in = curr_vpp_metrics->bytes_in;
+ last_vpp_metrics->bytes_out = curr_vpp_metrics->bytes_out;
+ last_vpp_metrics->packets_in = curr_vpp_metrics->packets_in;
+ last_vpp_metrics->packets_out = curr_vpp_metrics->packets_out;
+ gettimeofday(&time_val, NULL);
+ start_epoch = time_val.tv_sec * 1000000 + time_val.tv_usec;
+
+ sleep(READ_INTERVAL);
+ }
+
+ /***************************************************************************/
+ /* Terminate */
+ /***************************************************************************/
+ sleep(1);
+ free(last_vpp_metrics);
+ free(curr_vpp_metrics);
+ evel_terminate();
+ printf("Terminated\n");
+
+ return 0;
+}
+
+void read_vpp_metrics(vpp_metrics_struct *vpp_metrics, char *vnic) {
+ // Define an array of char that contains the parameters of the unix 'cut' command
+ char* params[] = {"-f3", "-f11", "-f4", "-f12"};
+ // Define the unix command to execute in order to read metrics from the vNIC
+ char* cmd_prefix = "sudo cat /proc/net/dev | grep \"";
+ char* cmd_mid = "\" | tr -s \' \' | cut -d\' \' ";
+ char cmd[BUFSIZE];
+ // Define other variables
+ char buf[BUFSIZE]; /* buffer used to store VPP metrics */
+ int temp[] = {0, 0, 0, 0}; /* temp array that contains VPP values */
+ FILE *fp; /* file descriptor to pipe cmd to shell */
+ int i;
+
+ for(i = 0; i < 4; i++) {
+ // Clear buffers
+ memset(buf, 0, BUFSIZE);
+ memset(cmd, 0, BUFSIZE);
+ // Build shell command to read metrics from the vNIC
+ strcat(cmd, cmd_prefix);
+ strcat(cmd, vnic);
+ strcat(cmd, cmd_mid);
+ strcat(cmd, params[i]);
+
+ // Open a pipe and read VPP values
+ if ((fp = popen(cmd, "r")) == NULL) {
+ printf("Error opening pipe!\n");
+ return;
+ }
+
+ while (fgets(buf, BUFSIZE, fp) != NULL);
+ temp[i] = atoi(buf);
+
+ if(pclose(fp)) {
+ printf("Command not found or exited with error status\n");
+ return;
+ }
+ }
+
+ // Store metrics read from the vNIC in the struct passed from the main function
+ vpp_metrics->bytes_in = temp[0];
+ vpp_metrics->bytes_out = temp[1];
+ vpp_metrics->packets_in = temp[2];
+ vpp_metrics->packets_out = temp[3];
+}
Code Review / demo.git / blobdiff