Merge in fix so that we don't have to do weight on the const root
[m6w6/libmemcached] / tests / virtual_buckets.cc
1 /* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
2 *
3 * Libmemcached Client and Server
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 <tests/virtual_buckets.h>
41
42 #include <libmemcached/memcached.h>
43
44 #include <cstring>
45
46 struct libtest_string_t {
47 const char *c_str;
48 size_t size;
49 };
50
51 static inline libtest_string_t libtest_string(const char *arg, size_t arg_size)
52 {
53 libtest_string_t local= { arg, arg_size };
54 return local;
55 }
56
57 #define make_libtest_string(X) libtest_string((X), static_cast<size_t>(sizeof(X) - 1))
58
59 static libtest_string_t libtest_string_t_null= { 0, 0};
60
61 static bool libtest_string_is_null(const libtest_string_t &string)
62 {
63 if (string.c_str == 0 and string.size == 0)
64 return true;
65
66 return false;
67 }
68
69 struct expect_t {
70 libtest_string_t key;
71 uint32_t server_id;
72 uint32_t bucket_id;
73 };
74
75 expect_t basic_keys[]= {
76 { make_libtest_string("hello"), 0, 0 },
77 { make_libtest_string("doctor"), 0, 0 },
78 { make_libtest_string("name"), 1, 3 },
79 { make_libtest_string("continue"), 1, 3 },
80 { make_libtest_string("yesterday"), 0, 0 },
81 { make_libtest_string("tomorrow"), 1, 1 },
82 { make_libtest_string("another key"), 2, 2 },
83 { libtest_string_t_null, 0, 0 }
84 };
85
86 test_return_t virtual_back_map(memcached_st *)
87 {
88 memcached_return_t rc;
89 memcached_server_st *server_pool;
90 memcached_st *memc;
91
92 memc= memcached_create(NULL);
93 test_true(memc);
94
95 uint32_t server_map[] = { 0, 1, 2, 1 };
96 rc= memcached_bucket_set(memc, server_map, NULL, 4, 2);
97 test_true(rc == MEMCACHED_SUCCESS);
98
99 memcached_server_distribution_t dt;
100 dt= memcached_behavior_get_distribution(memc);
101 test_true(dt == MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET);
102
103 memcached_behavior_set_key_hash(memc, MEMCACHED_HASH_CRC);
104 test_true(rc == MEMCACHED_SUCCESS);
105
106 memcached_hash_t hash_type= memcached_behavior_get_key_hash(memc);
107 test_true(hash_type == MEMCACHED_HASH_CRC);
108
109 server_pool = memcached_servers_parse("localhost:11211, localhost1:11210, localhost2:11211");
110 test_true(server_pool);
111 memcached_server_push(memc, server_pool);
112
113 /* verify that the server list was parsed okay. */
114 test_true(memcached_server_count(memc) == 3);
115 test_true(strcmp(server_pool[0].hostname, "localhost") == 0);
116 test_true(server_pool[0].port == 11211);
117
118 test_true(strcmp(server_pool[1].hostname, "localhost1") == 0);
119 test_true(server_pool[1].port == 11210);
120
121 test_true(strcmp(server_pool[2].hostname, "localhost2") == 0);
122 test_true(server_pool[2].port == 11211);
123
124 dt= memcached_behavior_get_distribution(memc);
125 hash_type= memcached_behavior_get_key_hash(memc);
126 test_true(dt == MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET);
127 test_true(hash_type == MEMCACHED_HASH_CRC);
128
129 /* verify the standard ketama set. */
130 for (expect_t *ptr= basic_keys; not libtest_string_is_null(ptr->key); ptr++)
131 {
132 uint32_t server_idx = memcached_generate_hash(memc, ptr->key.c_str, ptr->key.size);
133
134 char buffer[1024];
135 snprintf(buffer, sizeof(buffer), "%.*s:%lu Got/Expected %u == %u", (int)ptr->key.size, ptr->key.c_str, (unsigned long)ptr->key.size, server_idx, ptr->server_id);
136 test_true_got(server_idx == ptr->server_id, buffer);
137 }
138
139 memcached_server_list_free(server_pool);
140 memcached_free(memc);
141
142 return TEST_SUCCESS;
143 }