1 /* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
5 * Copyright (C) 2011 Data Differential, http://datadifferential.com/
6 * Copyright (C) 2010 Brian Aker All rights reserved.
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9 * modification, are permitted provided that the following conditions are
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13 * notice, this list of conditions and the following disclaimer.
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16 * copyright notice, this list of conditions and the following disclaimer
17 * in the documentation and/or other materials provided with the
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21 * promote products derived from this software without specific prior
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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37 #include <libmemcached/common.h>
39 const char * memcached_lib_version(void)
41 return LIBMEMCACHED_VERSION_STRING
;
44 static inline memcached_return_t
memcached_version_textual(memcached_st
*ptr
)
46 libmemcached_io_vector_st vector
[]=
48 { memcached_literal_param("version\r\n") },
52 bool errors_happened
= false;
53 for (uint32_t x
= 0; x
< memcached_server_count(ptr
); x
++)
55 org::libmemcached::Instance
* instance
= memcached_instance_fetch(ptr
, x
);
57 // Optimization, we only fetch version once.
58 if (instance
->major_version
!= UINT8_MAX
)
63 memcached_return_t rrc
;
64 if (memcached_failed(rrc
= memcached_vdo(instance
, vector
, 1, true)))
66 errors_happened
= true;
67 (void)memcached_set_error(*instance
, rrc
, MEMCACHED_AT
);
75 // Collect the returned items
76 org::libmemcached::Instance
* instance
;
77 while ((instance
= memcached_io_get_readable_server(ptr
)))
79 memcached_return_t rrc
= memcached_response(instance
, NULL
);
80 if (memcached_failed(rrc
))
82 memcached_io_reset(instance
);
83 errors_happened
= true;
88 return errors_happened
? MEMCACHED_SOME_ERRORS
: MEMCACHED_SUCCESS
;
91 static inline memcached_return_t
memcached_version_binary(memcached_st
*ptr
)
93 protocol_binary_request_version request
= {};
95 request
.message
.header
.request
.opcode
= PROTOCOL_BINARY_CMD_VERSION
;
96 request
.message
.header
.request
.datatype
= PROTOCOL_BINARY_RAW_BYTES
;
98 libmemcached_io_vector_st vector
[]=
100 { request
.bytes
, sizeof(request
.bytes
) }
104 bool errors_happened
= false;
105 for (uint32_t x
= 0; x
< memcached_server_count(ptr
); x
++)
107 org::libmemcached::Instance
* instance
= memcached_instance_fetch(ptr
, x
);
109 initialize_binary_request(instance
, request
.message
.header
);
111 if (instance
->major_version
!= UINT8_MAX
)
116 memcached_return_t rrc
= memcached_vdo(instance
, vector
, 1, true);
117 if (memcached_failed(rrc
))
119 memcached_io_reset(instance
);
120 errors_happened
= true;
129 // Collect the returned items
130 org::libmemcached::Instance
* instance
;
131 while ((instance
= memcached_io_get_readable_server(ptr
)))
134 memcached_return_t rrc
= memcached_response(instance
, buffer
, sizeof(buffer
), NULL
);
135 if (memcached_failed(rrc
))
137 memcached_io_reset(instance
);
138 errors_happened
= true;
143 return errors_happened
? MEMCACHED_SOME_ERRORS
: MEMCACHED_SUCCESS
;
146 static inline void version_ascii_instance(org::libmemcached::Instance
* instance
)
148 if (instance
->major_version
!= UINT8_MAX
)
150 libmemcached_io_vector_st vector
[]=
152 { memcached_literal_param("version\r\n") },
155 (void)memcached_vdo(instance
, vector
, 1, false);
159 static inline void version_binary_instance(org::libmemcached::Instance
* instance
)
161 if (instance
->major_version
!= UINT8_MAX
)
163 protocol_binary_request_version request
= {};
165 request
.message
.header
.request
.opcode
= PROTOCOL_BINARY_CMD_VERSION
;
166 request
.message
.header
.request
.datatype
= PROTOCOL_BINARY_RAW_BYTES
;
168 libmemcached_io_vector_st vector
[]=
170 { request
.bytes
, sizeof(request
.bytes
) }
173 initialize_binary_request(instance
, request
.message
.header
);
175 (void)memcached_vdo(instance
, vector
, 1, false);
179 void memcached_version_instance(org::libmemcached::Instance
* instance
)
183 if (memcached_has_root(instance
))
185 if (memcached_is_fetching_version(instance
->root
))
187 if (memcached_is_udp(instance
->root
) == false)
190 if (memcached_is_binary(instance
->root
))
192 version_binary_instance(instance
);
196 version_ascii_instance(instance
);
203 memcached_return_t
memcached_version(memcached_st
*ptr
)
207 memcached_return_t rc
;
208 if (memcached_failed(rc
= initialize_query(ptr
, true)))
213 if (memcached_is_udp(ptr
))
215 return MEMCACHED_NOT_SUPPORTED
;
218 if (memcached_is_binary(ptr
))
220 return memcached_version_binary(ptr
);
223 return memcached_version_textual(ptr
);
226 return MEMCACHED_INVALID_ARGUMENTS
;