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
, int local_errno
= 0)
54 WATCHPOINT_ASSERT(memc
);
58 if (memc
->error_messages
&& memc
->error_messages
->query_id
!= memc
->query_id
)
60 memcached_error_free(memc
);
63 if (rc
== MEMCACHED_MEMORY_ALLOCATION_FAILURE
or rc
== MEMCACHED_ERRNO
)
69 memcached_error_t
*error
;
70 error
= (struct memcached_error_t
*)libmemcached_malloc(memc
, sizeof(struct memcached_error_t
));
76 error
->query_id
= memc
->query_id
;
78 error
->local_errno
= local_errno
;
82 size_t length
= str
->size
> (size_t)MAX_ERROR_LENGTH
? MAX_ERROR_LENGTH
: str
->size
;
84 memcpy(error
->message
, str
->c_str
, error
->size
);
85 error
->message
[error
->size
]= 0;
92 error
->next
= memc
->error_messages
;
93 memc
->error_messages
= error
;
96 memcached_return_t
memcached_set_error_string(memcached_st
*memc
, memcached_return_t rc
, const char *str
, size_t length
)
98 memcached_string_t tmp
;
101 return memcached_set_error_message(memc
, rc
, &tmp
);
104 memcached_return_t
memcached_set_error_string(memcached_server_st
& self
, memcached_return_t rc
, const char *str
, size_t length
)
106 memcached_string_t tmp
;
109 return memcached_set_error_message(self
, rc
, &tmp
);
112 memcached_return_t
memcached_set_error_message(memcached_st
*memc
, memcached_return_t rc
, memcached_string_t
*str
)
114 if (memcached_success(rc
))
115 return MEMCACHED_SUCCESS
;
122 memcached_return_t
memcached_set_error_message(memcached_server_st
& self
, memcached_return_t rc
, memcached_string_t
*str
)
124 if (memcached_success(rc
))
125 return MEMCACHED_SUCCESS
;
127 char hostname_port_message
[MAX_ERROR_LENGTH
];
129 if (str
and str
->size
)
131 size
= snprintf(hostname_port_message
, sizeof(hostname_port_message
), "%.*s, host: %s:%d",
132 memcached_string_printf(*str
),
133 self
.hostname
, int(self
.port
));
137 size
= snprintf(hostname_port_message
, sizeof(hostname_port_message
), "host: %s:%d",
138 self
.hostname
, int(self
.port
));
141 memcached_string_t error_host
= { hostname_port_message
, size
};
143 _set((memcached_st
*)self
.root
, &error_host
, rc
);
148 memcached_return_t
memcached_set_error(memcached_server_st
& self
, memcached_return_t rc
)
150 if (memcached_success(rc
))
151 return MEMCACHED_SUCCESS
;
153 char hostname_port
[NI_MAXHOST
+NI_MAXSERV
+ sizeof("host : ")];
154 int size
= snprintf(hostname_port
, sizeof(hostname_port
), "host: %s:%d", self
.hostname
, int(self
.port
));
156 memcached_string_t error_host
= { hostname_port
, size
};
158 _set((memcached_st
*)self
.root
, &error_host
, rc
);
163 memcached_return_t
memcached_set_error(memcached_st
* self
, memcached_return_t rc
)
165 if (memcached_success(rc
))
166 return MEMCACHED_SUCCESS
;
168 _set(self
, NULL
, rc
);
173 memcached_return_t
memcached_set_error(memcached_st
& self
, memcached_return_t rc
)
175 if (memcached_success(rc
))
176 return MEMCACHED_SUCCESS
;
178 _set(&self
, NULL
, rc
);
183 memcached_return_t
memcached_set_errno(memcached_st
*memc
, int local_errno
, memcached_string_t
*str
)
185 memcached_return_t rc
= MEMCACHED_ERRNO
;
186 _set(memc
, str
, rc
, local_errno
);
191 memcached_return_t
memcached_set_errno(memcached_server_st
& self
, int local_errno
, memcached_string_t
*str
)
193 char hostname_port_message
[MAX_ERROR_LENGTH
];
195 if (str
and str
->size
)
197 size
= snprintf(hostname_port_message
, sizeof(hostname_port_message
), "%.*s, host: %s:%d",
198 memcached_string_printf(*str
),
199 self
.hostname
, int(self
.port
));
203 size
= snprintf(hostname_port_message
, sizeof(hostname_port_message
), "host: %s:%d",
204 self
.hostname
, int(self
.port
));
207 memcached_string_t error_host
= { hostname_port_message
, size
};
209 self
.cached_errno
= local_errno
; // Store in the actual server
210 memcached_return_t rc
= MEMCACHED_ERRNO
;
211 _set((memcached_st
*)self
.root
, &error_host
, rc
, local_errno
);
216 static void _error_print(const memcached_error_t
*error
)
223 fprintf(stderr
, "%s\n", memcached_strerror(NULL
, error
->rc
) );
227 fprintf(stderr
, "%s %s\n", memcached_strerror(NULL
, error
->rc
), error
->message
);
230 _error_print(error
->next
);
233 void memcached_error_print(const memcached_st
*self
)
238 _error_print(self
->error_messages
);
241 static void _error_free(memcached_error_t
*error
)
246 _error_free(error
->next
);
248 if (error
&& error
->root
)
250 libmemcached_free(error
->root
, error
);
258 void memcached_error_free(memcached_st
*self
)
263 _error_free(self
->error_messages
);
264 self
->error_messages
= NULL
;
267 const char *memcached_last_error_message(memcached_st
*memc
)
270 return memcached_strerror(memc
, MEMCACHED_INVALID_ARGUMENTS
);
272 if (not memc
->error_messages
)
273 return memcached_strerror(memc
, MEMCACHED_SUCCESS
);
275 if (not memc
->error_messages
->size
)
276 return memcached_strerror(memc
, memc
->error_messages
->rc
);
278 return memc
->error_messages
->message
;
281 memcached_return_t
memcached_last_error(memcached_st
*memc
)
284 return MEMCACHED_INVALID_ARGUMENTS
;
286 if (not memc
->error_messages
)
287 return MEMCACHED_SUCCESS
;
289 return memc
->error_messages
->rc
;
292 int memcached_last_error_errno(memcached_st
*memc
)
297 if (not memc
->error_messages
)
300 return memc
->error_messages
->local_errno
;