1 /* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
5 * Copyright (C) 2011 Data Differential, http://datadifferential.com/
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are
12 * * Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
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
20 * * The names of its contributors may not be used to endorse or
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
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.
38 #include <libmemcached/common.h>
40 #define MAX_ERROR_LENGTH 2048
41 struct memcached_error_t
45 struct memcached_error_t
*next
;
46 memcached_return_t rc
;
49 char message
[MAX_ERROR_LENGTH
];
52 static void _set(memcached_st
& memc
, memcached_string_t
*str
, memcached_return_t
&rc
, const char *at
, int local_errno
= 0)
55 if (memc
.error_messages
&& memc
.error_messages
->query_id
!= memc
.query_id
)
57 memcached_error_free(&memc
);
60 // For memory allocation we use our error since it is a bit more specific
61 if (local_errno
== ENOMEM
and rc
== MEMCACHED_ERRNO
)
64 rc
= MEMCACHED_MEMORY_ALLOCATION_FAILURE
;
67 if (rc
== MEMCACHED_MEMORY_ALLOCATION_FAILURE
)
72 if (rc
== MEMCACHED_ERRNO
and not local_errno
)
78 memcached_error_t
*error
= (struct memcached_error_t
*)libmemcached_malloc(&memc
, sizeof(struct memcached_error_t
));
79 if (not error
) // Bad business if this happens
83 error
->query_id
= memc
.query_id
;
85 error
->local_errno
= local_errno
;
89 size_t length
= str
->size
> (size_t)MAX_ERROR_LENGTH
? MAX_ERROR_LENGTH
: str
->size
;
91 memcpy(error
->message
, str
->c_str
, error
->size
);
92 error
->message
[error
->size
]= 0;
99 error
->next
= memc
.error_messages
;
100 memc
.error_messages
= error
;
103 memcached_return_t
memcached_set_error(memcached_st
& memc
, memcached_return_t rc
, const char *at
, const char *str
, size_t length
)
105 memcached_string_t tmp
= { str
, length
};
106 return memcached_set_error(memc
, rc
, at
, tmp
);
109 memcached_return_t
memcached_set_error(memcached_server_st
& self
, memcached_return_t rc
, const char *at
, const char *str
, size_t length
)
111 memcached_string_t tmp
= { str
, length
};
112 return memcached_set_error(self
, rc
, at
, tmp
);
115 memcached_return_t
memcached_set_error(memcached_st
& memc
, memcached_return_t rc
, const char *at
, memcached_string_t
& str
)
117 if (memcached_success(rc
))
118 return MEMCACHED_SUCCESS
;
120 _set(memc
, &str
, rc
, at
);
125 memcached_return_t
memcached_set_error(memcached_server_st
& self
, memcached_return_t rc
, const char *at
, memcached_string_t
& str
)
127 if (memcached_success(rc
))
128 return MEMCACHED_SUCCESS
;
130 char hostname_port_message
[MAX_ERROR_LENGTH
];
134 size
= snprintf(hostname_port_message
, sizeof(hostname_port_message
), "%.*s, host: %s:%d",
135 memcached_string_printf(str
),
136 self
.hostname
, int(self
.port
));
140 size
= snprintf(hostname_port_message
, sizeof(hostname_port_message
), "host: %s:%d",
141 self
.hostname
, int(self
.port
));
144 memcached_string_t error_host
= { hostname_port_message
, size
};
149 _set(*self
.root
, &error_host
, rc
, at
);
154 memcached_return_t
memcached_set_error(memcached_server_st
& self
, memcached_return_t rc
, const char *at
)
156 if (memcached_success(rc
))
157 return MEMCACHED_SUCCESS
;
159 char hostname_port
[NI_MAXHOST
+NI_MAXSERV
+ sizeof("host : ")];
160 int size
= snprintf(hostname_port
, sizeof(hostname_port
), "host: %s:%d", self
.hostname
, int(self
.port
));
162 memcached_string_t error_host
= { hostname_port
, size
};
167 _set(*self
.root
, &error_host
, rc
, at
);
172 memcached_return_t
memcached_set_error(memcached_st
& self
, memcached_return_t rc
, const char *at
)
174 if (memcached_success(rc
))
175 return MEMCACHED_SUCCESS
;
177 _set(self
, NULL
, rc
, at
);
182 memcached_return_t
memcached_set_errno(memcached_st
& self
, int local_errno
, const char *at
, const char *str
, size_t length
)
184 memcached_string_t tmp
= { str
, length
};
185 return memcached_set_errno(self
, local_errno
, at
, tmp
);
188 memcached_return_t
memcached_set_errno(memcached_server_st
& self
, int local_errno
, const char *at
, const char *str
, size_t length
)
190 memcached_string_t tmp
= { str
, length
};
191 return memcached_set_errno(self
, local_errno
, at
, tmp
);
194 memcached_return_t
memcached_set_errno(memcached_st
& self
, int local_errno
, const char *at
)
197 return MEMCACHED_SUCCESS
;
199 memcached_return_t rc
= MEMCACHED_ERRNO
;
200 _set(self
, NULL
, rc
, at
, local_errno
);
205 memcached_return_t
memcached_set_errno(memcached_st
& memc
, int local_errno
, const char *at
, memcached_string_t
& str
)
208 return MEMCACHED_SUCCESS
;
210 memcached_return_t rc
= MEMCACHED_ERRNO
;
211 _set(memc
, &str
, rc
, at
, local_errno
);
216 memcached_return_t
memcached_set_errno(memcached_server_st
& self
, int local_errno
, const char *at
, memcached_string_t
& str
)
219 return MEMCACHED_SUCCESS
;
221 char hostname_port_message
[MAX_ERROR_LENGTH
];
225 size
= snprintf(hostname_port_message
, sizeof(hostname_port_message
), "%.*s, host: %s:%d",
226 memcached_string_printf(str
),
227 self
.hostname
, int(self
.port
));
231 size
= snprintf(hostname_port_message
, sizeof(hostname_port_message
), "host: %s:%d",
232 self
.hostname
, int(self
.port
));
235 memcached_string_t error_host
= { hostname_port_message
, size
};
237 self
.cached_errno
= local_errno
; // Store in the actual server
239 memcached_return_t rc
= MEMCACHED_ERRNO
;
243 _set(*self
.root
, &error_host
, rc
, at
, local_errno
);
248 memcached_return_t
memcached_set_errno(memcached_server_st
& self
, int local_errno
, const char *at
)
251 return MEMCACHED_SUCCESS
;
253 char hostname_port_message
[MAX_ERROR_LENGTH
];
254 int size
= snprintf(hostname_port_message
, sizeof(hostname_port_message
), "host: %s:%d",
255 self
.hostname
, int(self
.port
));
257 memcached_string_t error_host
= { hostname_port_message
, size
};
259 self
.cached_errno
= local_errno
; // Store in the actual server
261 memcached_return_t rc
= MEMCACHED_ERRNO
;
265 _set(*self
.root
, &error_host
, rc
, at
, local_errno
);
270 static void _error_print(const memcached_error_t
*error
)
277 fprintf(stderr
, "%s\n", memcached_strerror(NULL
, error
->rc
) );
281 fprintf(stderr
, "%s %s\n", memcached_strerror(NULL
, error
->rc
), error
->message
);
284 _error_print(error
->next
);
287 void memcached_error_print(const memcached_st
*self
)
292 _error_print(self
->error_messages
);
295 static void _error_free(memcached_error_t
*error
)
300 _error_free(error
->next
);
302 if (error
&& error
->root
)
304 libmemcached_free(error
->root
, error
);
312 void memcached_error_free(memcached_st
*self
)
317 _error_free(self
->error_messages
);
318 self
->error_messages
= NULL
;
321 const char *memcached_last_error_message(memcached_st
*memc
)
324 return memcached_strerror(memc
, MEMCACHED_INVALID_ARGUMENTS
);
326 if (not memc
->error_messages
)
327 return memcached_strerror(memc
, MEMCACHED_SUCCESS
);
329 if (not memc
->error_messages
->size
)
330 return memcached_strerror(memc
, memc
->error_messages
->rc
);
332 return memc
->error_messages
->message
;
335 memcached_return_t
memcached_last_error(memcached_st
*memc
)
338 return MEMCACHED_INVALID_ARGUMENTS
;
340 if (not memc
->error_messages
)
341 return MEMCACHED_SUCCESS
;
343 return memc
->error_messages
->rc
;
346 int memcached_last_error_errno(memcached_st
*memc
)
351 if (not memc
->error_messages
)
354 return memc
->error_messages
->local_errno
;