diff options
Diffstat (limited to 'vnfs/VESreporting_vLB/vpp_measurement_reporter.c')
| -rw-r--r-- | vnfs/VESreporting_vLB/vpp_measurement_reporter.c | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/vnfs/VESreporting_vLB/vpp_measurement_reporter.c b/vnfs/VESreporting_vLB/vpp_measurement_reporter.c new file mode 100644 index 00000000..1a1e7ac8 --- /dev/null +++ b/vnfs/VESreporting_vLB/vpp_measurement_reporter.c @@ -0,0 +1,246 @@ + +/*************************************************************************//** + * + * 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 <math.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 */ + "vLoadBalancer", /* 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) { + // Read the number of vDNSs currently active + int active_dns = 0; + FILE* fd = fopen("active_dns.txt", "r"); + while(!feof(fd)) { + if(fscanf(fd, "%d", &active_dns) != 1) /* Avoid infinite loops if the file doesn't contain exactly one number */ + break; + } + + if(fclose(fd)) { + printf("Error when closing file\n"); + return 1; + } + + memset(curr_vpp_metrics, 0, sizeof(vpp_metrics_struct)); + read_vpp_metrics(curr_vpp_metrics, vnic); + + if(active_dns > 0 && (curr_vpp_metrics->bytes_in - last_vpp_metrics->bytes_in > 0)) { + bytes_in_this_round = (int) round((curr_vpp_metrics->bytes_in - last_vpp_metrics->bytes_in) / active_dns); + } + else { + bytes_in_this_round = 0; + } + if(active_dns > 0 && (curr_vpp_metrics->bytes_out - last_vpp_metrics->bytes_out > 0)) { + bytes_out_this_round = (int) round((curr_vpp_metrics->bytes_out - last_vpp_metrics->bytes_out) / active_dns); + } + else { + bytes_out_this_round = 0; + } + if(active_dns > 0 && (curr_vpp_metrics->packets_in - last_vpp_metrics->packets_in > 0)) { + packets_in_this_round = (int) round((curr_vpp_metrics->packets_in - last_vpp_metrics->packets_in) / active_dns); + } + else { + packets_in_this_round = 0; + } + if(active_dns > 0 && (curr_vpp_metrics->packets_out - last_vpp_metrics->packets_out > 0)) { + packets_out_this_round = (int) round((curr_vpp_metrics->packets_out - last_vpp_metrics->packets_out) / active_dns); + } + 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]; +} |