1 /* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
2 // vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
3 #ident "$Id$"
4 /*======
5 This file is part of PerconaFT.
6
7
8 Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved.
9
10 PerconaFT is free software: you can redistribute it and/or modify
11 it under the terms of the GNU General Public License, version 2,
12 as published by the Free Software Foundation.
13
14 PerconaFT is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with PerconaFT. If not, see <http://www.gnu.org/licenses/>.
21
22 ----------------------------------------
23
24 PerconaFT is free software: you can redistribute it and/or modify
25 it under the terms of the GNU Affero General Public License, version 3,
26 as published by the Free Software Foundation.
27
28 PerconaFT is distributed in the hope that it will be useful,
29 but WITHOUT ANY WARRANTY; without even the implied warranty of
30 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
31 GNU Affero General Public License for more details.
32
33 You should have received a copy of the GNU Affero General Public License
34 along with PerconaFT. If not, see <http://www.gnu.org/licenses/>.
35 ======= */
36
37 #ident "Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved."
38
39 #include "logger/logcursor.h"
40 #include "test.h"
41
42 // log a couple of timestamp entries and verify the log by walking
43 // a cursor through the log entries
44
corrupt_the_checksum(void)45 static void corrupt_the_checksum(void) {
46 // change the LSN in the first log entry of log 0. this will cause an checksum error.
47 char logname[TOKU_PATH_MAX+1];
48 int r;
49 sprintf(logname, "%s/log000000000000.tokulog%d", TOKU_TEST_FILENAME, TOKU_LOG_VERSION);
50 FILE *f = fopen(logname, "r+b"); assert(f);
51 r = fseek(f, 025, SEEK_SET); assert(r == 0);
52 char c = 100;
53 size_t n = fwrite(&c, sizeof c, 1, f); assert(n == sizeof c);
54 r = fclose(f); assert(r == 0);
55 }
56
57 int
test_main(int argc,const char * argv[])58 test_main (int argc, const char *argv[]) {
59 default_parse_args(argc, argv);
60
61 int r;
62 toku_os_recursive_delete(TOKU_TEST_FILENAME);
63 r = toku_os_mkdir(TOKU_TEST_FILENAME, S_IRWXU); assert(r==0);
64 TOKULOGGER logger;
65 LSN lsn = ZERO_LSN;
66
67 // log a couple of timestamp log entries
68
69 r = toku_logger_create(&logger);
70 assert(r == 0);
71
72 r = toku_logger_open(TOKU_TEST_FILENAME, logger);
73 assert(r == 0);
74
75 BYTESTRING bs0 = { .len = 5, .data = (char *) "hello" };
76 toku_log_comment(logger, &lsn, 0, 0, bs0);
77
78 r = toku_logger_close(&logger);
79 assert(r == 0);
80
81 // change the LSN and corrupt the checksum
82 corrupt_the_checksum();
83
84 if (!verbose) {
85 // redirect stderr
86 int devnul = open(DEV_NULL_FILE, O_WRONLY);
87 assert(devnul >= 0);
88 r = toku_dup2(devnul, fileno(stderr)); assert(r == fileno(stderr));
89 r = close(devnul); assert(r == 0);
90 }
91
92 // walk forwards
93 TOKULOGCURSOR lc = NULL;
94 struct log_entry *le;
95
96 r = toku_logcursor_create(&lc, TOKU_TEST_FILENAME);
97 assert(r == 0 && lc != NULL);
98
99 r = toku_logcursor_next(lc, &le);
100 assert(r != 0);
101
102 r = toku_logcursor_destroy(&lc);
103 assert(r == 0 && lc == NULL);
104
105 // walk backwards
106 r = toku_logcursor_create(&lc, TOKU_TEST_FILENAME);
107 assert(r == 0 && lc != NULL);
108
109 r = toku_logcursor_prev(lc, &le);
110 assert(r != 0);
111
112 r = toku_logcursor_destroy(&lc);
113 assert(r == 0 && lc == NULL);
114
115 toku_os_recursive_delete(TOKU_TEST_FILENAME);
116
117 return 0;
118 }
119