fe132fe1ab0c29663c89edd23deb6d1b7703578d
[awesomized/libmemcached] / libmemcached / memcached_server.c
1 /*
2 This is a partial implementation for fetching/creating memcached_server_st objects.
3 */
4 #include "common.h"
5
6 memcached_server_st *memcached_server_create(memcached_st *memc, memcached_server_st *ptr)
7 {
8 if (ptr == NULL)
9 {
10 ptr= (memcached_server_st *)malloc(sizeof(memcached_server_st));
11
12 if (!ptr)
13 return NULL; /* MEMCACHED_MEMORY_ALLOCATION_FAILURE */
14
15 memset(ptr, 0, sizeof(memcached_server_st));
16 ptr->is_allocated= MEMCACHED_ALLOCATED;
17 }
18 else
19 {
20 ptr->is_allocated= MEMCACHED_USED;
21 memset(ptr, 0, sizeof(memcached_server_st));
22 }
23
24 ptr->root= memc;
25
26 return ptr;
27 }
28
29 memcached_server_st *memcached_server_create_with(memcached_st *memc, memcached_server_st *host,
30 const char *hostname, unsigned int port,
31 uint32_t weight, memcached_connection type)
32 {
33 host= memcached_server_create(memc, host);
34
35 if (host == NULL)
36 return NULL;
37
38 strncpy(host->hostname, hostname, MEMCACHED_MAX_HOST_LENGTH - 1);
39 host->root= memc ? memc : NULL;
40 host->port= port;
41 host->weight= weight;
42 host->fd= -1;
43 host->type= type;
44 host->read_ptr= host->read_buffer;
45 if (memc)
46 host->next_retry= memc->retry_timeout;
47 host->sockaddr_inited= MEMCACHED_NOT_ALLOCATED;
48
49 return host;
50 }
51
52 void memcached_server_free(memcached_server_st *ptr)
53 {
54 memcached_quit_server(ptr, 0);
55
56 if (ptr->address_info)
57 {
58 freeaddrinfo(ptr->address_info);
59 ptr->address_info= NULL;
60 }
61
62 if (ptr->is_allocated == MEMCACHED_ALLOCATED)
63 {
64 if (ptr->root && ptr->root->call_free)
65 ptr->root->call_free(ptr->root, ptr);
66 else
67 free(ptr);
68 }
69 }
70
71 /*
72 If we do not have a valid object to clone from, we toss an error.
73 */
74 memcached_server_st *memcached_server_clone(memcached_server_st *clone, memcached_server_st *ptr)
75 {
76 memcached_server_st *new_clone;
77
78 /* We just do a normal create if ptr is missing */
79 if (ptr == NULL)
80 return NULL;
81
82 if (clone && clone->is_allocated == MEMCACHED_USED)
83 {
84 WATCHPOINT_ASSERT(0);
85 return NULL;
86 }
87
88 new_clone= memcached_server_create(ptr->root, clone);
89
90 if (new_clone == NULL)
91 return NULL;
92
93 new_clone->root= ptr->root;
94
95 /* TODO We should check return type */
96 memcached_server_create_with(new_clone->root, new_clone,
97 ptr->hostname, ptr->port, ptr->weight,
98 ptr->type);
99
100 return new_clone;
101 }
102
103 memcached_return memcached_server_cursor(memcached_st *ptr,
104 memcached_server_function *callback,
105 void *context,
106 unsigned int number_of_callbacks)
107 {
108 unsigned int y;
109
110 for (y= 0; y < ptr->number_of_hosts; y++)
111 {
112 unsigned int x;
113
114 for (x= 0; x < number_of_callbacks; x++)
115 {
116 unsigned int iferror;
117
118 iferror= (*callback[x])(ptr, &ptr->hosts[y], context);
119
120 if (iferror)
121 continue;
122 }
123 }
124
125 return MEMCACHED_SUCCESS;
126 }
127
128 memcached_server_st *memcached_server_by_key(memcached_st *ptr, const char *key, size_t key_length, memcached_return *error)
129 {
130 uint32_t server_key;
131
132 unlikely (key_length == 0)
133 {
134 *error= MEMCACHED_NO_KEY_PROVIDED;
135 return NULL;
136 }
137
138 unlikely (ptr->number_of_hosts == 0)
139 {
140 *error= MEMCACHED_NO_SERVERS;
141 return NULL;
142 }
143
144 if ((ptr->flags & MEM_VERIFY_KEY) && (memcachd_key_test((char **)&key, &key_length, 1) == MEMCACHED_BAD_KEY_PROVIDED))
145 {
146 *error= MEMCACHED_BAD_KEY_PROVIDED;
147 return NULL;
148 }
149
150 server_key= memcached_generate_hash(ptr, key, key_length);
151
152 return memcached_server_clone(NULL, &ptr->hosts[server_key]);
153
154 }