+++ /dev/null
-/* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
- *
- * Data Differential Utility library
- *
- * Copyright (C) 2012 Data Differential, http://datadifferential.com/
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *
- * * The names of its contributors may not be used to endorse or
- * promote products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#pragma once
-
-#include <cerrno>
-#include <cstdarg>
-#include <cstdio>
-#include <fcntl.h>
-#include <iostream>
-#include <string>
-#include <syslog.h>
-
-#define UTIL_MAX_ERROR_SIZE 2048
-
-namespace datadifferential {
-namespace util {
-
-/** Verbosity levels.
- */
-enum verbose_t
-{
- // Logging this will cause shutdown
- VERBOSE_FATAL= LOG_EMERG, // syslog:LOG_EMERG
-
- VERBOSE_ALERT= LOG_ALERT, // syslog:LOG_ALERT
- VERBOSE_CRITICAL= LOG_CRIT, // syslog:LOG_CRIT
-
- VERBOSE_ERROR= LOG_ERR, // syslog:LOG_ERR
-
- VERBOSE_WARN= LOG_WARNING, // syslog:LOG_WARNING
-
- VERBOSE_NOTICE= LOG_NOTICE, // syslog:LOG_NOTICE
-
- VERBOSE_INFO= LOG_INFO, // syslog:LOG_INFO
-
- VERBOSE_DEBUG= LOG_DEBUG // syslog:LOG_DEBUG
-};
-
-#ifndef __INTEL_COMPILER
-#pragma GCC diagnostic ignored "-Wformat-nonliteral"
-#endif
-
-struct log_info_st
-{
- std::string name;
- std::string filename;
- int fd;
- bool opt_syslog;
- bool opt_file;
- bool init_success;
-
- log_info_st(const std::string& name_arg, const std::string &filename_arg, bool syslog_arg) :
- name(name_arg),
- filename(filename_arg),
- fd(-1),
- opt_syslog(syslog_arg),
- opt_file(false),
- init_success(false)
- {
- if (opt_syslog)
- {
- openlog(name.c_str(), LOG_PID | LOG_NDELAY, LOG_USER);
- }
-
- init();
- }
-
- void init()
- {
- if (filename.size())
- {
- if (filename.compare("stderr") == 0)
- {
- fd= STDERR_FILENO;
- }
- else
- {
- fd= open(filename.c_str(), O_CREAT | O_WRONLY | O_APPEND, 0644);
- if (fd == -1)
- {
- if (opt_syslog)
- {
- char buffer[1024];
- char *getcwd_ret= getcwd(buffer, sizeof(buffer));
- syslog(LOG_ERR, "Could not open log file \"%.*s\", from \"%s\", open failed with (%s)",
- int(filename.size()), filename.c_str(),
- getcwd_ret,
- strerror(errno));
- }
- std::cerr << "Could not open log file for writing, switching to stderr." << std::endl;
-
- fd= STDERR_FILENO;
- }
- }
-
- opt_file= true;
- }
-
- init_success= true;
- }
-
- bool initialized() const
- {
- return init_success;
- }
-
- int file() const
- {
- return fd;
- }
-
- void write(verbose_t verbose, const char *format, ...)
- {
- if (opt_file or opt_syslog)
- {
- va_list args;
- va_start(args, format);
- char mesg[BUFSIZ];
- int mesg_length= vsnprintf(mesg, sizeof(mesg), format, args);
- va_end(args);
-
- if (opt_file)
- {
- char buffer[UTIL_MAX_ERROR_SIZE];
- int buffer_length= snprintf(buffer, sizeof(buffer), "%7s %.*s\n", verbose_name(verbose), mesg_length, mesg);
- if (::write(file(), buffer, buffer_length) == -1)
- {
- std::cerr << "Could not write to log file." << std::endl;
- syslog(LOG_EMERG, "gearmand could not open log file %s, got error %s", filename.c_str(), strerror(errno));
- }
-
- }
-
- if (opt_syslog)
- {
- syslog(int(verbose), "%7s %.*s", verbose_name(verbose), mesg_length, mesg);
- }
- }
- }
-
- ~log_info_st()
- {
- if (fd != -1 and fd != STDERR_FILENO)
- {
- close(fd);
- }
-
- if (opt_syslog)
- {
- closelog();
- }
- }
-
-private:
- const char *verbose_name(verbose_t verbose)
- {
- switch (verbose)
- {
- case VERBOSE_FATAL:
- return "FATAL";
-
- case VERBOSE_ALERT:
- return "ALERT";
-
- case VERBOSE_CRITICAL:
- return "CRITICAL";
-
- case VERBOSE_ERROR:
- return "ERROR";
-
- case VERBOSE_WARN:
- return "WARNING";
-
- case VERBOSE_NOTICE:
- return "NOTICE";
-
- case VERBOSE_INFO:
- return "INFO";
-
- case VERBOSE_DEBUG:
- return "DEBUG";
-
- default:
- break;
- }
-
- return "UNKNOWN";
- }
-};
-
-} // namespace util
-} // namespace datadifferential
projects / awesomized / libmemcached / blobdiff