1 /* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
5 * Copyright (C) 2011 Data Differential, http://datadifferential.com/
6 * Copyright (C) 2006-2009 Brian Aker All rights reserved.
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39 This is a partial implementation for fetching/creating memcached_server_st objects.
41 #include <libmemcached/common.h>
43 static inline void _server_init(memcached_server_st
*self
, memcached_st
*root
,
44 const memcached_string_t
& hostname
,
46 uint32_t weight
, memcached_connection_t type
)
48 self
->options
.is_shutting_down
= false;
49 self
->options
.is_dead
= false;
50 self
->number_of_hosts
= 0;
51 self
->cursor_active
= 0;
53 self
->fd
= INVALID_SOCKET
;
54 self
->io_bytes_sent
= 0;
55 self
->server_failure_counter
= 0;
56 self
->server_failure_counter_query_id
= 0;
57 self
->weight
= weight
? weight
: 1; // 1 is the default weight value
58 WATCHPOINT_SET(self
->io_wait_count
.read
= 0);
59 WATCHPOINT_SET(self
->io_wait_count
.write
= 0);
60 self
->major_version
= UINT8_MAX
;
61 self
->micro_version
= UINT8_MAX
;
62 self
->minor_version
= UINT8_MAX
;
64 self
->error_messages
= NULL
;
65 self
->read_ptr
= self
->read_buffer
;
66 self
->read_buffer_length
= 0;
67 self
->read_data_length
= 0;
68 self
->write_buffer_offset
= 0;
69 self
->address_info
= NULL
;
70 self
->address_info_next
= NULL
;
72 self
->state
= MEMCACHED_SERVER_STATE_NEW
;
78 self
->version
= ++root
->server_info
.version
;
82 self
->version
= UINT_MAX
;
84 self
->limit_maxbytes
= 0;
85 memcpy(self
->hostname
, hostname
.c_str
, hostname
.size
);
86 self
->hostname
[hostname
.size
]= 0;
89 static memcached_server_st
*_server_create(memcached_server_st
*self
, const memcached_st
*memc
)
93 self
= libmemcached_xmalloc(memc
, struct memcached_server_st
);
97 return NULL
; /* MEMCACHED_MEMORY_ALLOCATION_FAILURE */
100 self
->options
.is_allocated
= true;
104 self
->options
.is_allocated
= false;
107 self
->options
.is_initialized
= true;
112 memcached_server_st
*__server_create_with(memcached_st
*memc
,
113 memcached_server_write_instance_st self
,
114 const memcached_string_t
& hostname
,
115 const in_port_t port
,
117 const memcached_connection_t type
)
119 if (memcached_is_valid_servername(hostname
) == false)
121 memcached_set_error(*memc
, MEMCACHED_INVALID_ARGUMENTS
, MEMCACHED_AT
, memcached_literal_param("Invalid hostname provided"));
125 self
= _server_create(self
, memc
);
132 _server_init(self
, const_cast<memcached_st
*>(memc
), hostname
, port
, weight
, type
);
142 void __server_free(memcached_server_st
*self
)
144 memcached_quit_server(self
, false);
146 if (self
->address_info
)
148 freeaddrinfo(self
->address_info
);
149 self
->address_info
= NULL
;
150 self
->address_info_next
= NULL
;
153 memcached_error_free(*self
);
155 if (memcached_is_allocated(self
))
157 libmemcached_free(self
->root
, self
);
161 self
->options
.is_initialized
= false;
165 void memcached_server_free(memcached_server_st
*self
)
172 if (memcached_server_list_count(self
))
174 memcached_server_list_free(self
);
182 If we do not have a valid object to clone from, we toss an error.
184 memcached_server_st
*memcached_server_clone(memcached_server_st
*destination
,
185 memcached_server_st
*source
)
187 /* We just do a normal create if source is missing */
193 memcached_string_t hostname
= { memcached_string_make_from_cstr(source
->hostname
) };
194 destination
= __server_create_with(source
->root
, destination
,
196 source
->port
, source
->weight
,
202 memcached_return_t
memcached_server_cursor(const memcached_st
*ptr
,
203 const memcached_server_fn
*callback
,
205 uint32_t number_of_callbacks
)
207 memcached_return_t rc
;
208 if (memcached_failed(rc
= initialize_const_query(ptr
)))
214 for (uint32_t x
= 0; x
< memcached_server_count(ptr
); x
++)
216 memcached_server_instance_st instance
=
217 memcached_server_instance_by_position(ptr
, x
);
219 for (uint32_t y
= 0; y
< number_of_callbacks
; y
++)
221 memcached_return_t ret
= (*callback
[y
])(ptr
, instance
, context
);
223 if (memcached_failed(ret
))
231 return errors
? MEMCACHED_SOME_ERRORS
: MEMCACHED_SUCCESS
;
234 memcached_return_t
memcached_server_execute(memcached_st
*ptr
,
235 memcached_server_execute_fn callback
,
238 for (uint32_t x
= 0; x
< memcached_server_count(ptr
); x
++)
240 memcached_server_write_instance_st instance
= memcached_server_instance_fetch(ptr
, x
);
242 unsigned int iferror
= (*callback
)(ptr
, instance
, context
);
250 return MEMCACHED_SUCCESS
;
253 memcached_server_instance_st
memcached_server_by_key(memcached_st
*ptr
,
256 memcached_return_t
*error
)
258 memcached_return_t unused
;
265 memcached_return_t rc
;
266 if (memcached_failed(rc
= initialize_const_query(ptr
)))
272 if (memcached_failed(rc
= memcached_validate_key_length(key_length
, ptr
->flags
.binary_protocol
)))
278 if (memcached_failed((memcached_key_test(*ptr
, (const char **)&key
, &key_length
, 1))))
280 *error
= MEMCACHED_BAD_KEY_PROVIDED
;
284 uint32_t server_key
= memcached_generate_hash(ptr
, key
, key_length
);
285 return memcached_server_instance_by_position(ptr
, server_key
);
289 void memcached_server_error_reset(memcached_server_st
*self
)
291 WATCHPOINT_ASSERT(self
);
297 memcached_error_free(*self
);
300 memcached_server_instance_st
memcached_server_get_last_disconnect(const memcached_st
*self
)
302 WATCHPOINT_ASSERT(self
);
306 return self
->last_disconnected_server
;
309 uint32_t memcached_servers_set_count(memcached_server_st
*servers
, uint32_t count
)
311 WATCHPOINT_ASSERT(servers
);
315 return servers
->number_of_hosts
= count
;
318 uint32_t memcached_server_count(const memcached_st
*self
)
320 WATCHPOINT_ASSERT(self
);
324 return self
->number_of_hosts
;
327 const char *memcached_server_name(const memcached_server_instance_st self
)
329 WATCHPOINT_ASSERT(self
);
333 return self
->hostname
;
336 in_port_t
memcached_server_port(const memcached_server_instance_st self
)
338 WATCHPOINT_ASSERT(self
);
345 uint32_t memcached_server_response_count(const memcached_server_instance_st self
)
347 WATCHPOINT_ASSERT(self
);
351 return self
->cursor_active
;
354 const char *memcached_server_type(const memcached_server_instance_st ptr
)
360 case MEMCACHED_CONNECTION_TCP
:
363 case MEMCACHED_CONNECTION_UDP
:
366 case MEMCACHED_CONNECTION_UNIX_SOCKET
: