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 "test.h"
40 #include <sys/wait.h>
41
42 // Verify that if tokudb crashes during recovery, then the prepared transactions are still prepared.
43
clean_env(const char * envdir)44 static void clean_env (const char *envdir) {
45 const int len = strlen(envdir)+100;
46 char cmd[len];
47 snprintf(cmd, len, "rm -rf %s", envdir);
48 int r = system(cmd);
49 CKERR(r);
50 CKERR(toku_os_mkdir(envdir, S_IRWXU+S_IRWXG+S_IRWXO));
51 }
52
setup_env(DB_ENV ** envp,const char * envdir)53 static void setup_env (DB_ENV **envp, const char *envdir) {
54 { int chk_r = db_env_create(envp, 0); CKERR(chk_r); }
55 (*envp)->set_errfile(*envp, stderr);
56 { int chk_r = (*envp)->set_redzone(*envp, 0); CKERR(chk_r); }
57 { int chk_r = (*envp)->open(*envp, envdir, DB_INIT_LOCK|DB_INIT_LOG|DB_INIT_MPOOL|DB_INIT_TXN|DB_CREATE|DB_PRIVATE|DB_RECOVER, S_IRWXU+S_IRWXG+S_IRWXO); CKERR(chk_r); }
58 }
59
setup_env_and_prepare(DB_ENV ** envp,const char * envdir,bool commit)60 static void setup_env_and_prepare (DB_ENV **envp, const char *envdir, bool commit) {
61 DB *db;
62 DB_TXN *txn;
63 clean_env(envdir);
64 setup_env(envp, envdir);
65 CKERR(db_create(&db, *envp, 0));
66 CKERR(db->open(db, NULL, "foo.db", 0, DB_BTREE, DB_CREATE | DB_AUTO_COMMIT, S_IRWXU+S_IRWXG+S_IRWXO));
67 CKERR((*envp)->txn_begin(*envp, 0, &txn, 0));
68 DBT key;
69 dbt_init(&key, "foo", 4);
70 CKERR(db->put(db, txn, &key, &key, 0));
71 { int chk_r = db->close(db, 0); CKERR(chk_r); }
72 uint8_t gid[DB_GID_SIZE];
73 memset(gid, 0, DB_GID_SIZE);
74 gid[0]=42;
75 CKERR(txn->prepare(txn, gid, 0));
76 if (commit)
77 CKERR(txn->commit(txn, 0));
78 }
79
test(void)80 static void test (void) {
81 pid_t pid;
82
83 if (0==(pid=fork())) {
84 DB_ENV *env;
85 setup_env_and_prepare(&env, TOKU_TEST_FILENAME, false);
86 {
87 DB_PREPLIST l[1];
88 long count=-1;
89 CKERR(env->txn_recover(env, l, 1, &count, DB_FIRST));
90 printf("%s:%d count=%ld\n", __FILE__, __LINE__, count);
91 assert(count==1);
92 assert(l[0].gid[0]==42);
93 }
94 exit(0);
95 }
96 {
97 int status;
98 pid_t pid2 = wait(&status);
99 assert(pid2==pid);
100 assert(WIFEXITED(status) && WEXITSTATUS(status)==0);
101 }
102 // Now run recovery and crash on purpose.
103 if (0==(pid=fork())) {
104 DB_ENV *env;
105 setup_env(&env, TOKU_TEST_FILENAME);
106
107 // make sure there is 1 prepared txn.
108 {
109 DB_PREPLIST l[1];
110 long count=-1;
111 int r = env->txn_recover(env, l, 1, &count, DB_FIRST);
112 printf("r=%d count=%ld\n", r, count);
113 assert(count==1);
114 assert(l[0].gid[0]==42);
115 for (int i=1; i<DB_GID_SIZE; i++) {
116 assert(l[0].gid[i]==0);
117 }
118 }
119
120 exit(0);
121 }
122 {
123 int status;
124 pid_t pid2 = wait(&status);
125 assert(pid2==pid);
126 assert(WIFEXITED(status) && WEXITSTATUS(status)==0);
127 }
128
129 // Now see if recovery works the second time.
130 DB_ENV *env;
131 setup_env(&env, TOKU_TEST_FILENAME);
132 {
133 DB_PREPLIST l[1];
134 long count=-1;
135 int r = env->txn_recover(env, l, 1, &count, DB_FIRST);
136 printf("r=%d count=%ld\n", r, count);
137 assert(count==1);
138 assert(l[0].gid[0]==42);
139 for (int i=1; i<DB_GID_SIZE; i++) {
140 assert(l[0].gid[i]==0);
141 }
142 { int chk_r = l->txn->commit(l->txn, 0); CKERR(chk_r); }
143 }
144 { int chk_r = env ->close(env, 0); CKERR(chk_r); }
145 }
146
test_main(int argc,char * const argv[])147 int test_main (int argc, char *const argv[]) {
148 default_parse_args(argc, argv);
149 // first test: open an environment, a db, a txn, and do a prepare. Then do txn_prepare (without even closing the environment).
150 test();
151
152
153 // second test: poen environment, a db, a txn, prepare, close the environment. Then reopen and do txn_prepare.
154
155 // third test: make sure there is an fsync on txn_prepare, but not on the following commit.
156
157
158 // Then close the environment Find out what BDB does when ask for the txn prepares.
159 // Other tests: read prepared txns, 1 at a time. Then close it and read them again.
160 return 0;
161 }
162