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/*
 * Copyright (c) 2017-2019 Cisco and/or its affiliates.
 * 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.
 */

/**
 * \file examples/update_priority.c
 * \brief libhicnctrl sample code : face priority update
 */

#include <stdlib.h>
#include <stdio.h>

#include <hicn/ctrl.h>
#include <hicn/util/log.h>

int main(int argc, char **argv)
{
    if (argc != 3) {
        fprintf(stderr, "Usage: %s FACE_ID PRIORITY\n", argv[0]);
        exit(EXIT_FAILURE);
    }
    unsigned face_id = atoi(argv[1]);
    unsigned priority = atoi(argv[2]);
    char face_id_s[SYMBOLIC_NAME_LEN];

    hc_sock_t * socket = hc_sock_create();
    if (!socket){
        DEBUG("Error creating libhicnctrl socket");
        goto ERR_SOCK;
    }

    if (hc_sock_connect(socket) < 0){
        DEBUG("Error connecting to forwarder");
        goto ERR;
    }

    snprintf(face_id_s, SYMBOLIC_NAME_LEN, "%d", face_id);
    if (hc_face_set_priority(socket, face_id_s, priority) < 0) {
        DEBUG("Error setting face priority");
        goto ERR;
    }

    DEBUG("Face priority updated successfully");

ERR:
    hc_sock_free(socket);
ERR_SOCK:
    return 0;
}