pceplib/pcep_utils_logging.c

   1 /*
   2  * This file is part of the PCEPlib, a PCEP protocol library.
   3  *
   4  * Copyright (C) 2020 Volta Networks https://voltanet.io/
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public License
  17  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  18  *
  19  * Author : Brady Johnson <brady@voltanet.io>
  20  *
  21  */
  22
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include "config.h"
  26 #endif
  27
  28 #include <stdarg.h>
  29 #include <stdio.h>
  30 #include "compiler.h"
  31 #include "pcep_utils_logging.h"
  32
  33 /* Forward declaration */
  34 int pcep_stdout_logger(int priority, const char *format, va_list args)
  35         PRINTFRR(2, 0);
  36
  37 static pcep_logger_func logger_func = pcep_stdout_logger;
  38 static int logging_level_ = LOG_INFO;
  39
  40 void register_logger(pcep_logger_func logger)
  41 {
  42         logger_func = logger;
  43 }
  44
  45 void set_logging_level(int level)
  46 {
  47         logging_level_ = level;
  48 }
  49
  50 int get_logging_level(void)
  51 {
  52         return logging_level_;
  53 }
  54
  55 void pcep_log(int priority, const char *format, ...)
  56 {
  57         va_list va;
  58         va_start(va, format);
  59         logger_func(priority, format, va);
  60         va_end(va);
  61 }
  62
  63 void pcep_log_hexbytes(int priority, const char *message, const uint8_t *bytes,
  64                        uint8_t bytes_len)
  65 {
  66         char byte_str[2048] = {0};
  67         int i = 0;
  68
  69         snprintf(byte_str, 2048, "%s ", message);
  70         for (; i < bytes_len; i++) {
  71                 snprintf(byte_str, 2048, "%02x ", bytes[i]);
  72         }
  73         snprintf(byte_str, 2048, "\n");
  74
  75         pcep_log(priority, "%s", byte_str);
  76 }
  77
  78 /* Defined with a return type to match the FRR logging signature.
  79  * Assuming glibc printf() is thread-safe. */
  80 int pcep_stdout_logger(int priority, const char *format, va_list args)
  81 {
  82         if (priority <= logging_level_) {
  83                 vprintf(format, args);
  84                 printf("\n");
  85         }
  86
  87         return 0;
  88 }