Merge in updates for server failure testing.
[awesomized/libmemcached] / libmemcached / util / ping.cc
1 /* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
2 *
3 * Libmemcached library
4 *
5 * Copyright (C) 2011 Data Differential, http://datadifferential.com/
6 * Copyright (C) 2010 Brian Aker 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 * Summary: connects to a host, and makes sure it is alive.
37 *
38 */
39
40 #include <libmemcached/common.h>
41 #include <libmemcached/memcached_util.h>
42
43 bool libmemcached_util_ping(const char *hostname, in_port_t port, memcached_return_t *ret)
44 {
45 memcached_return_t unused;
46 if (not ret)
47 ret= &unused;
48
49 memcached_st *memc_ptr= memcached_create(NULL);
50 if (not memc_ptr)
51 {
52 *ret= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
53 return false;
54 }
55
56 memcached_return_t rc= memcached_server_add(memc_ptr, hostname, port);
57 if (memcached_success(rc))
58 {
59 rc= memcached_version(memc_ptr);
60 }
61
62 if (memcached_failed(rc) and rc == MEMCACHED_SOME_ERRORS)
63 {
64 memcached_server_instance_st instance=
65 memcached_server_instance_by_position(memc_ptr, 0);
66
67 assert_msg(instance and instance->error_messages, " ");
68 if (instance and instance->error_messages)
69 {
70 rc= memcached_server_error_return(instance);
71 }
72 }
73 memcached_free(memc_ptr);
74
75 *ret= rc;
76
77 return memcached_success(rc);
78 }
79
80 bool libmemcached_util_ping2(const char *hostname, in_port_t port, const char *username, const char *password, memcached_return_t *ret)
81 {
82 if (username == NULL)
83 {
84 return libmemcached_util_ping(hostname, port, ret);
85 }
86
87 memcached_return_t unused;
88 if (not ret)
89 ret= &unused;
90
91 if (LIBMEMCACHED_WITH_SASL_SUPPORT == 0)
92 {
93 *ret= MEMCACHED_NOT_SUPPORTED;
94 return false;
95 }
96
97 memcached_st *memc_ptr= memcached_create(NULL);
98 if (not memc_ptr)
99 {
100 *ret= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
101 return false;
102 }
103
104 if (memcached_failed(*ret= memcached_set_sasl_auth_data(memc_ptr, username, password)))
105 {
106 memcached_free(memc_ptr);
107 return false;
108 }
109
110 memcached_return_t rc= memcached_server_add(memc_ptr, hostname, port);
111 if (memcached_success(rc))
112 {
113 rc= memcached_version(memc_ptr);
114 }
115
116 if (memcached_failed(rc) and rc == MEMCACHED_SOME_ERRORS)
117 {
118 memcached_server_instance_st instance=
119 memcached_server_instance_by_position(memc_ptr, 0);
120
121 assert_msg(instance and instance->error_messages, " ");
122 if (instance and instance->error_messages)
123 {
124 rc= memcached_server_error_return(instance);
125 }
126 }
127 memcached_free(memc_ptr);
128
129 *ret= rc;
130
131 return memcached_success(rc);
132 }