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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38 #include "libmemcached/common.h"
40 static memcached_return_t
ascii_touch(memcached_instance_st
* instance
,
41 const char *key
, size_t key_length
,
44 char expiration_buffer
[MEMCACHED_MAXIMUM_INTEGER_DISPLAY_LENGTH
+1];
45 int expiration_buffer_length
= snprintf(expiration_buffer
, sizeof(expiration_buffer
), " %llu", (unsigned long long)expiration
);
46 if (size_t(expiration_buffer_length
) >= sizeof(expiration_buffer
)+1 or expiration_buffer_length
< 0)
48 return memcached_set_error(*instance
, MEMCACHED_MEMORY_ALLOCATION_FAILURE
, MEMCACHED_AT
,
49 memcached_literal_param("snprintf(MEMCACHED_MAXIMUM_INTEGER_DISPLAY_LENGTH)"));
52 libmemcached_io_vector_st vector
[]=
55 { memcached_literal_param("touch ") },
56 { memcached_array_string(instance
->root
->_namespace
), memcached_array_size(instance
->root
->_namespace
) },
58 { expiration_buffer
, size_t(expiration_buffer_length
) },
59 { memcached_literal_param("\r\n") }
62 memcached_return_t rc
;
63 if (memcached_failed(rc
= memcached_vdo(instance
, vector
, 6, true)))
65 return memcached_set_error(*instance
, MEMCACHED_WRITE_FAILURE
, MEMCACHED_AT
);
71 static memcached_return_t
binary_touch(memcached_instance_st
* instance
,
72 const char *key
, size_t key_length
,
75 protocol_binary_request_touch request
= {}; //{.bytes= {0}};
77 initialize_binary_request(instance
, request
.message
.header
);
79 request
.message
.header
.request
.opcode
= PROTOCOL_BINARY_CMD_TOUCH
;
80 request
.message
.header
.request
.extlen
= 4;
81 request
.message
.header
.request
.keylen
= htons((uint16_t)(key_length
+memcached_array_size(instance
->root
->_namespace
)));
82 request
.message
.header
.request
.datatype
= PROTOCOL_BINARY_RAW_BYTES
;
83 request
.message
.header
.request
.bodylen
= htonl((uint32_t)(key_length
+memcached_array_size(instance
->root
->_namespace
) +request
.message
.header
.request
.extlen
));
84 request
.message
.body
.expiration
= htonl((uint32_t) expiration
);
86 libmemcached_io_vector_st vector
[]=
89 { request
.bytes
, sizeof(request
.bytes
) },
90 { memcached_array_string(instance
->root
->_namespace
), memcached_array_size(instance
->root
->_namespace
) },
94 memcached_return_t rc
;
95 if (memcached_failed(rc
= memcached_vdo(instance
, vector
, 4, true)))
97 return memcached_set_error(*instance
, MEMCACHED_WRITE_FAILURE
, MEMCACHED_AT
);
103 memcached_return_t
memcached_touch(memcached_st
*ptr
,
104 const char *key
, size_t key_length
,
107 return memcached_touch_by_key(ptr
, key
, key_length
, key
, key_length
, expiration
);
110 memcached_return_t
memcached_touch_by_key(memcached_st
*shell
,
111 const char *group_key
, size_t group_key_length
,
112 const char *key
, size_t key_length
,
115 Memcached
* ptr
= memcached2Memcached(shell
);
116 LIBMEMCACHED_MEMCACHED_TOUCH_START();
118 memcached_return_t rc
;
119 if (memcached_failed(rc
= initialize_query(ptr
, true)))
124 if (memcached_failed(rc
= memcached_key_test(*ptr
, (const char **)&key
, &key_length
, 1)))
126 return memcached_set_error(*ptr
, rc
, MEMCACHED_AT
);
129 uint32_t server_key
= memcached_generate_hash_with_redistribution(ptr
, group_key
, group_key_length
);
130 memcached_instance_st
* instance
= memcached_instance_fetch(ptr
, server_key
);
132 if (ptr
->flags
.binary_protocol
)
134 rc
= binary_touch(instance
, key
, key_length
, expiration
);
138 rc
= ascii_touch(instance
, key
, key_length
, expiration
);
141 if (memcached_failed(rc
))
143 return memcached_set_error(*instance
, rc
, MEMCACHED_AT
, memcached_literal_param("Error occcured while writing touch command to server"));
146 char buffer
[MEMCACHED_DEFAULT_COMMAND_SIZE
];
147 rc
= memcached_response(instance
, buffer
, sizeof(buffer
), NULL
);
149 if (rc
== MEMCACHED_SUCCESS
or rc
== MEMCACHED_NOTFOUND
)
154 return memcached_set_error(*instance
, rc
, MEMCACHED_AT
, memcached_literal_param("Error occcured while reading response"));