{
public:
- Memcache()
- :
+ Memcache()
+ :
servers_list(),
memc(),
servers(NULL),
}
Memcache(const std::string &hostname,
- unsigned int port)
+ in_port_t port)
:
servers_list(),
memc(),
memcached_server_push(&memc, servers);
}
- Memcache(memcached_st *clone)
- :
+ Memcache(memcached_st *clone)
+ :
servers_list(),
memc(),
servers(NULL),
/**
* Return an error string for the given return structure.
*
- * @param[in] rc a memcached_return structure
+ * @param[in] rc a memcached_return_t structure
* @return error string corresponding to given return code in the library.
*/
- const std::string getError(memcached_return rc) const
+ const std::string getError(memcached_return_t rc) const
{
/* first parameter to strerror is unused */
return memcached_strerror(NULL, rc);
}
+
+ bool setBehavior(memcached_behavior_t flag, uint64_t data)
+ {
+ memcached_return_t rc;
+ rc= memcached_behavior_set(&memc, flag, data);
+ return (rc == MEMCACHED_SUCCESS);
+ }
+
+ uint64_t getBehavior(memcached_behavior_t flag) {
+ return memcached_behavior_get(&memc, flag);
+ }
+
/**
* Return the string which contains the list of memcached servers being
* used.
* @param[in] port port number of server to add
* @return true on success; false otherwise
*/
- bool addServer(const std::string &server_name, unsigned int port)
+ bool addServer(const std::string &server_name, in_port_t port)
{
- memcached_return rc;
+ memcached_return_t rc;
std::ostringstream strstm;
servers_list.append(",");
servers_list.append(server_name);
* @param[in] port port number of server to remove
* @return true on success; false otherwise
*/
- bool removeServer(const std::string &server_name, size_t port)
+ bool removeServer(const std::string &server_name, in_port_t port)
{
std::string tmp_str;
std::ostringstream strstm;
strstm << port;
tmp_str.append(strstm.str());
memcached_server_st *server= memcached_servers_parse(tmp_str.c_str());
- memcached_return rc= memcached_server_remove(server);
+ memcached_return_t rc= memcached_server_remove(server);
return (rc == MEMCACHED_SUCCESS);
}
* @param[out] ret_val store returned object in this vector
* @return a memcached return structure
*/
- memcached_return fetch(std::string &key,
+ memcached_return_t fetch(std::string &key,
std::vector<char> &ret_val)
{
char ret_key[MEMCACHED_MAX_KEY];
size_t value_length= 0;
size_t key_length= 0;
- memcached_return rc;
+ memcached_return_t rc;
uint32_t flags= 0;
char *value= memcached_fetch(&memc, ret_key, &key_length,
&value_length, &flags, &rc);
ret_val.reserve(value_length);
ret_val.assign(value, value + value_length);
key.assign(ret_key);
+ free(value);
+ }
+ else if (value)
+ {
+ free(value);
}
+
return rc;
}
* this vector
* @return true on success; false otherwise
*/
- bool get(const std::string &key,
+ bool get(const std::string &key,
std::vector<char> &ret_val) throw (Error)
{
uint32_t flags= 0;
- memcached_return rc;
+ memcached_return_t rc;
size_t value_length= 0;
if (key.empty())
{
ret_val.reserve(value_length);
ret_val.assign(value, value + value_length);
+ free(value);
return true;
}
return false;
/**
* Fetches an individual from a server which is specified by
* the master_key parameter that is used for determining which
- * server an object was stored in if key partitioning was
+ * server an object was stored in if key partitioning was
* used for storage.
*
* @param[in] master_key key that specifies server object is stored on
* this vector
* @return true on success; false otherwise
*/
- bool getByKey(const std::string &master_key,
- const std::string &key,
+ bool getByKey(const std::string &master_key,
+ const std::string &key,
std::vector<char> &ret_val) throw(Error)
{
uint32_t flags= 0;
- memcached_return rc;
+ memcached_return_t rc;
size_t value_length= 0;
if (master_key.empty() || key.empty())
{
ret_val.reserve(value_length);
ret_val.assign(value, value + value_length);
+ free(value);
return true;
}
return false;
}
/*
- * If the std::vector of keys is empty then we cannot
+ * If the std::vector of keys is empty then we cannot
* call memcached_mget as we will get undefined behavior.
*/
if (! real_keys.empty())
{
- memcached_return rc= memcached_mget(&memc, &real_keys[0], &key_len[0],
+ memcached_return_t rc= memcached_mget(&memc, &real_keys[0], &key_len[0],
real_keys.size());
return (rc == MEMCACHED_SUCCESS);
}
{
throw(Error("the key or value supplied is empty!", false));
}
- memcached_return rc= memcached_set(&memc,
+ memcached_return_t rc= memcached_set(&memc,
key.c_str(), key.length(),
&value[0], value.size(),
expiration, flags);
* @param[in] flags flags to store with the object
* @return true on succcess; false otherwise
*/
- bool setByKey(const std::string &master_key,
- const std::string &key,
+ bool setByKey(const std::string &master_key,
+ const std::string &key,
const std::vector<char> &value,
time_t expiration,
uint32_t flags) throw(Error)
{
throw(Error("the key or value supplied is empty!", false));
}
- memcached_return rc= memcached_set_by_key(&memc, master_key.c_str(),
+ memcached_return_t rc= memcached_set_by_key(&memc, master_key.c_str(),
master_key.length(),
key.c_str(), key.length(),
&value[0], value.size(),
{
throw(Error("the key supplied is empty!", false));
}
- memcached_return rc= memcached_increment(&memc, key.c_str(), key.length(),
+ memcached_return_t rc= memcached_increment(&memc, key.c_str(), key.length(),
offset, value);
return (rc == MEMCACHED_SUCCESS);
}
{
throw(Error("the key supplied is empty!", false));
}
- memcached_return rc= memcached_decrement(&memc, key.c_str(),
+ memcached_return_t rc= memcached_decrement(&memc, key.c_str(),
key.length(),
offset, value);
return (rc == MEMCACHED_SUCCESS);
{
throw(Error("the key or value supplied is empty!", false));
}
- memcached_return rc= memcached_add(&memc, key.c_str(), key.length(),
+ memcached_return_t rc= memcached_add(&memc, key.c_str(), key.length(),
&value[0], value.size(), 0, 0);
return (rc == MEMCACHED_SUCCESS);
}
* @param[in] value of object to add
* @return true on success; false otherwise
*/
- bool addByKey(const std::string &master_key,
- const std::string &key,
+ bool addByKey(const std::string &master_key,
+ const std::string &key,
const std::vector<char> &value) throw(Error)
{
if (master_key.empty() ||
- key.empty() ||
+ key.empty() ||
value.empty())
{
throw(Error("the master key or key supplied is empty!", false));
}
- memcached_return rc= memcached_add_by_key(&memc,
+ memcached_return_t rc= memcached_add_by_key(&memc,
master_key.c_str(),
master_key.length(),
key.c_str(),
key.length(),
- &value[0],
+ &value[0],
value.size(),
0, 0);
return (rc == MEMCACHED_SUCCESS);
{
throw(Error("the key or value supplied is empty!", false));
}
- memcached_return rc= memcached_replace(&memc, key.c_str(), key.length(),
+ memcached_return_t rc= memcached_replace(&memc, key.c_str(), key.length(),
&value[0], value.size(),
0, 0);
return (rc == MEMCACHED_SUCCESS);
* @param[in[ value value to replace object with
* @return true on success; false otherwise
*/
- bool replaceByKey(const std::string &master_key,
- const std::string &key,
+ bool replaceByKey(const std::string &master_key,
+ const std::string &key,
const std::vector<char> &value)
{
if (master_key.empty() ||
{
throw(Error("the master key or key supplied is empty!", false));
}
- memcached_return rc= memcached_replace_by_key(&memc,
- master_key.c_str(),
+ memcached_return_t rc= memcached_replace_by_key(&memc,
+ master_key.c_str(),
master_key.length(),
- key.c_str(),
+ key.c_str(),
key.length(),
- &value[0],
- value.size(),
+ &value[0],
+ value.size(),
0, 0);
return (rc == MEMCACHED_SUCCESS);
}
{
throw(Error("the key or value supplied is empty!", false));
}
- memcached_return rc= memcached_prepend(&memc, key.c_str(), key.length(),
+ memcached_return_t rc= memcached_prepend(&memc, key.c_str(), key.length(),
&value[0], value.size(), 0, 0);
return (rc == MEMCACHED_SUCCESS);
}
* @param[in] value data to prepend to object's value
* @return true on success; false otherwise
*/
- bool prependByKey(const std::string &master_key,
- const std::string &key,
+ bool prependByKey(const std::string &master_key,
+ const std::string &key,
const std::vector<char> &value)
throw(Error)
{
{
throw(Error("the master key or key supplied is empty!", false));
}
- memcached_return rc= memcached_prepend_by_key(&memc,
+ memcached_return_t rc= memcached_prepend_by_key(&memc,
master_key.c_str(),
master_key.length(),
key.c_str(),
{
throw(Error("the key or value supplied is empty!", false));
}
- memcached_return rc= memcached_append(&memc,
+ memcached_return_t rc= memcached_append(&memc,
key.c_str(),
key.length(),
&value[0],
{
throw(Error("the master key or key supplied is empty!", false));
}
- memcached_return rc= memcached_append_by_key(&memc,
- master_key.c_str(),
+ memcached_return_t rc= memcached_append_by_key(&memc,
+ master_key.c_str(),
master_key.length(),
- key.c_str(),
+ key.c_str(),
key.length(),
- &value[0],
- value.size(),
+ &value[0],
+ value.size(),
0, 0);
return (rc == MEMCACHED_SUCCESS);
}
* @param[in] value value to store for object in server
* @param[in] cas_arg "cas" value
*/
- bool cas(const std::string &key,
- const std::vector<char> &value,
+ bool cas(const std::string &key,
+ const std::vector<char> &value,
uint64_t cas_arg) throw(Error)
{
if (key.empty() || value.empty())
{
throw(Error("the key or value supplied is empty!", false));
}
- memcached_return rc= memcached_cas(&memc, key.c_str(), key.length(),
- &value[0], value.size(),
+ memcached_return_t rc= memcached_cas(&memc, key.c_str(), key.length(),
+ &value[0], value.size(),
0, 0, cas_arg);
return (rc == MEMCACHED_SUCCESS);
}
* @param[in] value value to store for object in server
* @param[in] cas_arg "cas" value
*/
- bool casByKey(const std::string &master_key,
- const std::string &key,
- const std::vector<char> &value,
+ bool casByKey(const std::string &master_key,
+ const std::string &key,
+ const std::vector<char> &value,
uint64_t cas_arg) throw(Error)
{
if (master_key.empty() ||
{
throw(Error("the master key, key or value supplied is empty!", false));
}
- memcached_return rc= memcached_cas_by_key(&memc,
- master_key.c_str(),
+ memcached_return_t rc= memcached_cas_by_key(&memc,
+ master_key.c_str(),
master_key.length(),
- key.c_str(),
+ key.c_str(),
key.length(),
- &value[0],
+ &value[0],
value.size(),
0, 0, cas_arg);
return (rc == MEMCACHED_SUCCESS);
{
throw(Error("the key supplied is empty!", false));
}
- memcached_return rc= memcached_delete(&memc, key.c_str(), key.length(), 0);
+ memcached_return_t rc= memcached_delete(&memc, key.c_str(), key.length(), 0);
return (rc == MEMCACHED_SUCCESS);
}
{
throw(Error("the key supplied is empty!", false));
}
- memcached_return rc= memcached_delete(&memc,
+ memcached_return_t rc= memcached_delete(&memc,
key.c_str(),
key.length(),
expiration);
}
/**
- * Delete an object from the server specified by the key given.
+ * Delete an object from the server specified by the key given.
*
* @param[in] master_key specifies server to remove object from
* @param[in] key key of object to delete
{
throw(Error("the master key or key supplied is empty!", false));
}
- memcached_return rc= memcached_delete_by_key(&memc,
+ memcached_return_t rc= memcached_delete_by_key(&memc,
master_key.c_str(),
master_key.length(),
key.c_str(),
}
/**
- * Delete an object from the server specified by the key given.
+ * Delete an object from the server specified by the key given.
*
* @param[in] master_key specifies server to remove object from
* @param[in] key key of object to delete
* @param[in] expiration time to delete the object after
* @return true on success; false otherwise
*/
- bool removeByKey(const std::string &master_key,
+ bool removeByKey(const std::string &master_key,
const std::string &key,
time_t expiration) throw(Error)
{
{
throw(Error("the master key or key supplied is empty!", false));
}
- memcached_return rc= memcached_delete_by_key(&memc,
- master_key.c_str(),
+ memcached_return_t rc= memcached_delete_by_key(&memc,
+ master_key.c_str(),
master_key.length(),
- key.c_str(),
- key.length(),
+ key.c_str(),
+ key.length(),
expiration);
return (rc == MEMCACHED_SUCCESS);
}
*/
bool flush(time_t expiration)
{
- memcached_return rc= memcached_flush(&memc, expiration);
+ memcached_return_t rc= memcached_flush(&memc, expiration);
return (rc == MEMCACHED_SUCCESS);
}
* @param[in] num_of_callbacks number of callback functions
* @return true on success; false otherwise
*/
- bool fetchExecute(memcached_execute_function *callback,
+ bool fetchExecute(memcached_execute_fn *callback,
void *context,
- unsigned int num_of_callbacks)
+ uint32_t num_of_callbacks)
{
- memcached_return rc= memcached_fetch_execute(&memc,
+ memcached_return_t rc= memcached_fetch_execute(&memc,
callback,
context,
num_of_callbacks);
return version;
}
+ /**
+ * Retrieve memcached statistics. Populate a std::map with the retrieved
+ * stats. Each server will map to another std::map of the key:value stats.
+ *
+ * @param[out] stats_map a std::map to be populated with the memcached
+ * stats
+ * @return true on success; false otherwise
+ */
+ bool getStats(std::map< std::string, std::map<std::string, std::string> >
+ &stats_map)
+ {
+ memcached_return_t rc;
+ memcached_stat_st *stats= memcached_stat(&memc, NULL, &rc);
+
+ if (rc != MEMCACHED_SUCCESS &&
+ rc != MEMCACHED_SOME_ERRORS)
+ {
+ return false;
+ }
+
+ uint32_t server_count= memcached_server_count(&memc);
+
+ /*
+ * For each memcached server, construct a std::map for its stats and add
+ * it to the std::map of overall stats.
+ */
+ for (uint32_t x= 0; x < server_count; x++)
+ {
+ std::ostringstream strstm;
+ std::string server_name(memcached_server_name(&memc, servers[x]));
+ server_name.append(":");
+ strstm << memcached_server_port(&memc, servers[x]);
+ server_name.append(strstm.str());
+
+ std::map<std::string, std::string> server_stats;
+ char **list= NULL;
+ char **ptr= NULL;
+
+ list= memcached_stat_get_keys(&memc, &stats[x], &rc);
+ for (ptr= list; *ptr; ptr++)
+ {
+ char *value= memcached_stat_get_value(&memc, &stats[x], *ptr, &rc);
+ server_stats[*ptr]= value;
+ free(value);
+ }
+
+ stats_map[server_name]= server_stats;
+ free(list);
+ }
+
+ memcached_stat_free(&memc, stats);
+ return true;
+ }
+
private:
std::string servers_list;
projects / awesomized / libmemcached / blobdiff