c63077c1c20418f8c5d4bae00e6df41eb33f0b88
[m6w6/libmemcached] / util / logfile.cc
1 /* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
2 *
3 * DataDifferential Utility Library
4 *
5 * Copyright (C) 2011 Data Differential, http://datadifferential.com/
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are
10 * met:
11 *
12 * * Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * * Redistributions in binary form must reproduce the above
16 * copyright notice, this list of conditions and the following disclaimer
17 * in the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * * The names of its contributors may not be used to endorse or
21 * promote products derived from this software without specific prior
22 * written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
27 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
28 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
29 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
34 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 *
36 */
37
38 #include "config.h"
39
40 #include "util/logfile.hpp"
41
42 #include <cerrno>
43 #include <cstdio>
44 #include <cstdlib>
45 #include <cstring>
46 #include <fcntl.h>
47 #include <fstream>
48 #include <iostream>
49 #include <sstream>
50 #include <sys/stat.h>
51 #include <sys/types.h>
52
53 namespace datadifferential {
54 namespace util {
55
56 Logfile::Logfile(const std::string &arg) :
57 _filename(arg)
58 {
59 time_t tmp= time(NULL);
60 _log_file << "shutdown: " << ctime(&tmp) << std::endl;
61 }
62
63 Logfile::~Logfile()
64 {
65 if (not _filename.empty())
66 {
67 _log_file.close();
68 if (access(_filename.c_str(), F_OK) == -1)
69 { }
70 else if (unlink(_filename.c_str()) == -1)
71 { }
72 }
73 }
74
75 bool Logfile::open()
76 {
77 if (_filename.empty())
78 {
79 _log_file.open("/dev/stderr");
80 return true;
81 }
82
83 _log_file.open(_filename.c_str());
84 if (not _log_file.good())
85 {
86 return false;
87 }
88
89 time_t tmp= time(NULL);
90 _log_file << "startup: " << ctime(&tmp) << std::endl;
91
92 return true;
93 }
94
95 } /* namespace util */
96 } /* namespace datadifferential */