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 "pcep_utils_logging.h"
  31
  32 /* Forward declaration */
  33 int pcep_stdout_logger(int priority, const char *format, va_list args);
  34
  35 static pcep_logger_func logger_func = pcep_stdout_logger;
  36 static int logging_level_ = LOG_INFO;
  37
  38 void register_logger(pcep_logger_func logger)
  39 {
  40         logger_func = logger;
  41 }
  42
  43 void set_logging_level(int level)
  44 {
  45         logging_level_ = level;
  46 }
  47
  48 int get_logging_level(void)
  49 {
  50         return logging_level_;
  51 }
  52
  53 void pcep_log(int priority, const char *format, ...)
  54 {
  55         va_list va;
  56         va_start(va, format);
  57         logger_func(priority, format, va);
  58         va_end(va);
  59 }
  60
  61 void pcep_log_hexbytes(int priority, const char *message, const uint8_t *bytes,
  62                        uint8_t bytes_len)
  63 {
  64         char byte_str[2048] = {0};
  65         int i = 0;
  66
  67         snprintf(byte_str, 2048, "%s ", message);
  68         for (; i < bytes_len; i++) {
  69                 snprintf(byte_str, 2048, "%02x ", bytes[i]);
  70         }
  71         snprintf(byte_str, 2048, "\n");
  72
  73         pcep_log(priority, "%s", byte_str);
  74 }
  75
  76 /* Defined with a return type to match the FRR logging signature.
  77  * Assuming glibc printf() is thread-safe. */
  78 int pcep_stdout_logger(int priority, const char *format, va_list args)
  79 {
  80         if (priority <= logging_level_) {
  81                 vprintf(format, args);
  82                 printf("\n");
  83         }
  84
  85         return 0;
  86 }