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>
41 #define MAX_ERROR_LENGTH 2048
42 struct memcached_error_t
46 struct memcached_error_t
*next
;
47 memcached_return_t rc
;
50 char message
[MAX_ERROR_LENGTH
];
53 static void _set(memcached_server_st
& server
, memcached_st
& memc
)
55 if (server
.error_messages
&& server
.error_messages
->query_id
!= server
.root
->query_id
)
57 memcached_error_free(server
);
60 if (memc
.error_messages
== NULL
)
63 memcached_error_t
*error
= (struct memcached_error_t
*)libmemcached_malloc(&memc
, sizeof(struct memcached_error_t
));
64 if (not error
) // Bad business if this happens
69 memcpy(error
, memc
.error_messages
, sizeof(memcached_error_t
));
70 error
->next
= server
.error_messages
;
71 server
.error_messages
= error
;
74 static void _set(memcached_st
& memc
, memcached_string_t
*str
, memcached_return_t
&rc
, const char *at
, int local_errno
= 0)
77 if (memc
.error_messages
&& memc
.error_messages
->query_id
!= memc
.query_id
)
79 memcached_error_free(memc
);
82 // For memory allocation we use our error since it is a bit more specific
83 if (local_errno
== ENOMEM
and rc
== MEMCACHED_ERRNO
)
85 rc
= MEMCACHED_MEMORY_ALLOCATION_FAILURE
;
88 if (rc
== MEMCACHED_MEMORY_ALLOCATION_FAILURE
)
93 if (rc
== MEMCACHED_ERRNO
and not local_errno
)
99 if (rc
== MEMCACHED_ERRNO
and local_errno
== ENOTCONN
)
101 rc
= MEMCACHED_CONNECTION_FAILURE
;
104 if (local_errno
== EINVAL
)
106 rc
= MEMCACHED_INVALID_ARGUMENTS
;
109 if (local_errno
== ECONNREFUSED
)
111 rc
= MEMCACHED_CONNECTION_FAILURE
;
114 memcached_error_t
*error
= (struct memcached_error_t
*)libmemcached_malloc(&memc
, sizeof(struct memcached_error_t
));
115 if (not error
) // Bad business if this happens
119 error
->query_id
= memc
.query_id
;
121 error
->local_errno
= local_errno
;
123 const char *errmsg_ptr
;
124 char errmsg
[MAX_ERROR_LENGTH
];
130 #ifdef STRERROR_R_CHAR_P
131 errmsg_ptr
= strerror_r(local_errno
, errmsg
, sizeof(errmsg
));
133 strerror_r(local_errno
, errmsg
, sizeof(errmsg
));
139 if (str
and str
->size
and local_errno
)
141 error
->size
= (int)snprintf(error
->message
, MAX_ERROR_LENGTH
, "%s(%s), %.*s -> %s",
142 memcached_strerror(&memc
, rc
),
144 memcached_string_printf(*str
), at
);
146 else if (local_errno
)
148 error
->size
= (int)snprintf(error
->message
, MAX_ERROR_LENGTH
, "%s(%s) -> %s",
149 memcached_strerror(&memc
, rc
),
153 else if (rc
== MEMCACHED_PARSE_ERROR
and str
and str
->size
)
155 error
->size
= (int)snprintf(error
->message
, MAX_ERROR_LENGTH
, "%.*s -> %s",
156 int(str
->size
), str
->c_str
, at
);
158 else if (str
and str
->size
)
160 error
->size
= (int)snprintf(error
->message
, MAX_ERROR_LENGTH
, "%s, %.*s -> %s",
161 memcached_strerror(&memc
, rc
),
162 int(str
->size
), str
->c_str
, at
);
166 error
->size
= (int)snprintf(error
->message
, MAX_ERROR_LENGTH
, "%s -> %s",
167 memcached_strerror(&memc
, rc
), at
);
170 error
->next
= memc
.error_messages
;
171 memc
.error_messages
= error
;
174 memcached_return_t
memcached_set_error(memcached_st
& memc
, memcached_return_t rc
, const char *at
, const char *str
, size_t length
)
176 assert_msg(rc
!= MEMCACHED_ERRNO
, "Programmer error, MEMCACHED_ERRNO was set to be returned to client");
177 memcached_string_t tmp
= { str
, length
};
178 return memcached_set_error(memc
, rc
, at
, tmp
);
181 memcached_return_t
memcached_set_error(memcached_server_st
& self
, memcached_return_t rc
, const char *at
, const char *str
, size_t length
)
183 assert_msg(rc
!= MEMCACHED_ERRNO
, "Programmer error, MEMCACHED_ERRNO was set to be returned to client");
184 assert_msg(rc
!= MEMCACHED_SOME_ERRORS
, "Programmer error, MEMCACHED_SOME_ERRORS was about to be set on a memcached_server_st");
185 memcached_string_t tmp
= { str
, length
};
186 return memcached_set_error(self
, rc
, at
, tmp
);
189 memcached_return_t
memcached_set_error(memcached_st
& memc
, memcached_return_t rc
, const char *at
, memcached_string_t
& str
)
191 assert_msg(rc
!= MEMCACHED_ERRNO
, "Programmer error, MEMCACHED_ERRNO was set to be returned to client");
192 if (memcached_success(rc
))
193 return MEMCACHED_SUCCESS
;
195 _set(memc
, &str
, rc
, at
);
200 memcached_return_t
memcached_set_parser_error(memcached_st
& memc
,
202 const char *format
, ...)
207 va_start(args
, format
);
208 int length
= vsnprintf(buffer
, sizeof(buffer
), format
, args
);
211 return memcached_set_error(memc
, MEMCACHED_PARSE_ERROR
, at
, buffer
, length
);
214 memcached_return_t
memcached_set_error(memcached_server_st
& self
, memcached_return_t rc
, const char *at
, memcached_string_t
& str
)
216 assert_msg(rc
!= MEMCACHED_ERRNO
, "Programmer error, MEMCACHED_ERRNO was set to be returned to client");
217 assert_msg(rc
!= MEMCACHED_SOME_ERRORS
, "Programmer error, MEMCACHED_SOME_ERRORS was about to be set on a memcached_server_st");
218 if (memcached_success(rc
))
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
};
240 _set(*self
.root
, &error_host
, rc
, at
);
241 _set(self
, (*self
.root
));
246 memcached_return_t
memcached_set_error(memcached_server_st
& self
, memcached_return_t rc
, const char *at
)
248 assert_msg(rc
!= MEMCACHED_ERRNO
, "Programmer error, MEMCACHED_ERRNO was set to be returned to client");
249 assert_msg(rc
!= MEMCACHED_SOME_ERRORS
, "Programmer error, MEMCACHED_SOME_ERRORS was about to be set on a memcached_server_st");
250 if (memcached_success(rc
))
251 return MEMCACHED_SUCCESS
;
253 char hostname_port
[NI_MAXHOST
+NI_MAXSERV
+ sizeof("host : ")];
254 int size
= snprintf(hostname_port
, sizeof(hostname_port
), "host: %s:%d", self
.hostname
, int(self
.port
));
256 memcached_string_t error_host
= { hostname_port
, size
};
261 _set(*self
.root
, &error_host
, rc
, at
);
262 _set(self
, *self
.root
);
267 memcached_return_t
memcached_set_error(memcached_st
& self
, memcached_return_t rc
, const char *at
)
269 assert_msg(rc
!= MEMCACHED_ERRNO
, "Programmer error, MEMCACHED_ERRNO was set to be returned to client");
270 if (memcached_success(rc
))
271 return MEMCACHED_SUCCESS
;
273 _set(self
, NULL
, rc
, at
);
278 memcached_return_t
memcached_set_errno(memcached_st
& self
, int local_errno
, const char *at
, const char *str
, size_t length
)
280 memcached_string_t tmp
= { str
, length
};
281 return memcached_set_errno(self
, local_errno
, at
, tmp
);
284 memcached_return_t
memcached_set_errno(memcached_server_st
& self
, int local_errno
, const char *at
, const char *str
, size_t length
)
286 memcached_string_t tmp
= { str
, length
};
287 return memcached_set_errno(self
, local_errno
, at
, tmp
);
290 memcached_return_t
memcached_set_errno(memcached_st
& self
, int local_errno
, const char *at
)
293 return MEMCACHED_SUCCESS
;
295 memcached_return_t rc
= MEMCACHED_ERRNO
;
296 _set(self
, NULL
, rc
, at
, local_errno
);
301 memcached_return_t
memcached_set_errno(memcached_st
& memc
, int local_errno
, const char *at
, memcached_string_t
& str
)
304 return MEMCACHED_SUCCESS
;
306 memcached_return_t rc
= MEMCACHED_ERRNO
;
307 _set(memc
, &str
, rc
, at
, local_errno
);
312 memcached_return_t
memcached_set_errno(memcached_server_st
& self
, int local_errno
, const char *at
, memcached_string_t
& str
)
315 return MEMCACHED_SUCCESS
;
317 char hostname_port_message
[MAX_ERROR_LENGTH
];
321 size
= snprintf(hostname_port_message
, sizeof(hostname_port_message
), "%.*s, host: %s:%d",
322 memcached_string_printf(str
),
323 self
.hostname
, int(self
.port
));
327 size
= snprintf(hostname_port_message
, sizeof(hostname_port_message
), "host: %s:%d",
328 self
.hostname
, int(self
.port
));
331 memcached_string_t error_host
= { hostname_port_message
, size
};
333 memcached_return_t rc
= MEMCACHED_ERRNO
;
337 _set(*self
.root
, &error_host
, rc
, at
, local_errno
);
338 _set(self
, (*self
.root
));
343 memcached_return_t
memcached_set_errno(memcached_server_st
& self
, int local_errno
, const char *at
)
346 return MEMCACHED_SUCCESS
;
348 char hostname_port_message
[MAX_ERROR_LENGTH
];
349 int size
= snprintf(hostname_port_message
, sizeof(hostname_port_message
), "host: %s:%d",
350 self
.hostname
, int(self
.port
));
352 memcached_string_t error_host
= { hostname_port_message
, size
};
354 memcached_return_t rc
= MEMCACHED_ERRNO
;
358 _set(*self
.root
, &error_host
, rc
, at
, local_errno
);
359 _set(self
, (*self
.root
));
364 static void _error_print(const memcached_error_t
*error
)
371 if (error
->size
== 0)
373 fprintf(stderr
, "%s\n", memcached_strerror(NULL
, error
->rc
) );
377 fprintf(stderr
, "%s %s\n", memcached_strerror(NULL
, error
->rc
), error
->message
);
380 _error_print(error
->next
);
383 void memcached_error_print(const memcached_st
*self
)
388 _error_print(self
->error_messages
);
391 static void _error_free(memcached_error_t
*error
)
396 _error_free(error
->next
);
398 if (error
&& error
->root
)
400 libmemcached_free(error
->root
, error
);
408 void memcached_error_free(memcached_st
& self
)
410 _error_free(self
.error_messages
);
411 self
.error_messages
= NULL
;
414 void memcached_error_free(memcached_server_st
& self
)
416 _error_free(self
.error_messages
);
417 self
.error_messages
= NULL
;
420 const char *memcached_last_error_message(memcached_st
*memc
)
424 return memcached_strerror(memc
, MEMCACHED_INVALID_ARGUMENTS
);
427 if (not memc
->error_messages
)
428 return memcached_strerror(memc
, MEMCACHED_SUCCESS
);
430 if (not memc
->error_messages
->size
)
431 return memcached_strerror(memc
, memc
->error_messages
->rc
);
433 return memc
->error_messages
->message
;
436 bool memcached_has_current_error(memcached_st
&memc
)
438 if (memc
.error_messages
439 and memc
.error_messages
->query_id
== memc
.query_id
440 and memcached_failed(memc
.error_messages
->rc
))
448 bool memcached_has_current_error(memcached_server_st
& server
)
450 return memcached_has_current_error(*(server
.root
));
453 memcached_return_t
memcached_last_error(memcached_st
*memc
)
457 return MEMCACHED_INVALID_ARGUMENTS
;
460 if (not memc
->error_messages
)
461 return MEMCACHED_SUCCESS
;
463 return memc
->error_messages
->rc
;
466 int memcached_last_error_errno(memcached_st
*memc
)
473 if (not memc
->error_messages
)
478 return memc
->error_messages
->local_errno
;
481 const char *memcached_server_error(memcached_server_instance_st server
)
488 if (not server
->error_messages
)
489 return memcached_strerror(server
->root
, MEMCACHED_SUCCESS
);
491 if (not server
->error_messages
->size
)
492 return memcached_strerror(server
->root
, server
->error_messages
->rc
);
494 return server
->error_messages
->message
;
498 memcached_error_t
*memcached_error_copy(const memcached_server_st
& server
)
500 if (server
.error_messages
== NULL
)
505 memcached_error_t
*error
= (memcached_error_t
*)libmemcached_malloc(server
.root
, sizeof(memcached_error_t
));
506 memcpy(error
, server
.error_messages
, sizeof(memcached_error_t
));
512 memcached_return_t
memcached_server_error_return(memcached_server_instance_st ptr
)
516 return MEMCACHED_INVALID_ARGUMENTS
;
519 if (ptr
and ptr
->error_messages
)
521 return ptr
->error_messages
->rc
;
524 return MEMCACHED_SUCCESS
;