-#include "libmemcached/memcached.h"
-#include <string.h>
-#include <stdio.h>
+#include <libmemcached/memcached.h>
+
+#include <string>
+#include <vector>
class Memcached
{
- memcached_st memc;
- memcached_result_st result;
-
public:
- Memcached() : memc(), result()
+ Memcached()
+ :
+ memc(),
+ result()
{
memcached_create(&memc);
}
- Memcached(memcached_st *clone) : memc(), result()
+ Memcached(memcached_st *clone)
+ :
+ memc(),
+ result()
{
memcached_clone(&memc, clone);
}
- char *fetch (char *key, size_t *key_length, size_t *value_length)
+
+ ~Memcached()
{
- uint32_t flags;
- memcached_return rc;
+ memcached_free(&memc);
+ }
- return memcached_fetch(&memc, key, key_length,
- value_length, &flags, &rc);
+ bool fetch(std::string &key,
+ std::string &ret_val,
+ size_t *key_length,
+ size_t *value_length,
+ uint32_t *flags,
+ memcached_return *rc)
+ {
+ char ret_key[MEMCACHED_MAX_KEY];
+ char *value= memcached_fetch(&memc, ret_key, key_length,
+ value_length, flags, rc);
+ if (value)
+ {
+ ret_val.assign(value);
+ key.assign(ret_key);
+ return true;
+ }
+ return false;
}
- char *get(const char *key, size_t *value_length)
+
+ std::string get(const std::string &key, size_t *value_length)
{
uint32_t flags;
memcached_return rc;
+ std::string ret_val;
- return memcached_get(&memc, key, strlen(key),
- value_length, &flags, &rc);
+ char *value= memcached_get(&memc, key.c_str(), key.length(),
+ value_length, &flags, &rc);
+ if (value)
+ {
+ ret_val.assign(value);
+ }
+ return ret_val;
}
- char *get_by_key(const char *master_key, const char *key,
- size_t *value_length)
+ std::string get_by_key(const std::string &master_key,
+ const std::string &key,
+ size_t *value_length)
{
uint32_t flags;
memcached_return rc;
+ std::string ret_val;
- return memcached_get_by_key(&memc, master_key, strlen(master_key),
- key, strlen(key),
- value_length, &flags, &rc);
+ char *value= memcached_get_by_key(&memc, master_key.c_str(), master_key.length(),
+ key.c_str(), key.length(),
+ value_length, &flags, &rc);
+ if (value)
+ {
+ ret_val.assign(value);
+ }
+ return ret_val;
}
- memcached_return mget(const char **keys, size_t *key_length,
- unsigned int number_of_keys)
+ bool mget(std::vector<std::string> &keys)
{
+ std::vector<const char *> real_keys;
+ std::vector<size_t> key_len;
+ /*
+ * Construct an array which will contain the length
+ * of each of the strings in the input vector. Also, to
+ * interface with the memcached C API, we need to convert
+ * the vector of std::string's to a vector of char *.
+ */
+ real_keys.reserve(keys.size());
+ key_len.reserve(keys.size());
+
+ std::vector<std::string>::iterator it= keys.begin();
+
+ while (it != keys.end())
+ {
+ real_keys.push_back(const_cast<char *>((*it).c_str()));
+ key_len.push_back((*it).length());
+ ++it;
+ }
+
+ /*
+ * 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],
+ static_cast<unsigned int>(real_keys.size()));
+ return (rc == MEMCACHED_SUCCESS);
+ }
- return memcached_mget(&memc, keys, key_length, number_of_keys);
+ return false;
}
- memcached_return set(const char *key, const char *value, size_t value_length)
+ bool set(const std::string &key,
+ const std::string &value,
+ time_t expiration,
+ uint32_t flags)
{
- return memcached_set(&memc, key, strlen(key),
- value, value_length,
- time_t(0), uint32_t(0));
+ memcached_return rc= memcached_set(&memc,
+ key.c_str(), key.length(),
+ value.c_str(), value.length(),
+ expiration, flags);
+ return (rc == MEMCACHED_SUCCESS || rc == MEMCACHED_BUFFERED);
}
- memcached_return set_by_key(const char *master_key, const char *key,
- const char *value, size_t value_length)
+ bool set_all(std::vector<std::string> &keys,
+ std::vector<std::string> &values,
+ time_t expiration,
+ uint32_t flags)
{
- return memcached_set_by_key(&memc, master_key, strlen(master_key),
- key, strlen(key),
- value, value_length,
- time_t(0),
- uint32_t(0) );
+ if (keys.size() != values.size())
+ {
+ return false;
+ }
+ bool retval= true;
+ std::vector<std::string>::iterator key_it= keys.begin();
+ std::vector<std::string>::iterator val_it= values.begin();
+ while (key_it != keys.end())
+ {
+ retval= set((*key_it), (*val_it), expiration, flags);
+ if (retval == false)
+ {
+ return retval;
+ }
+ ++key_it;
+ ++val_it;
+ }
+ return retval;
}
- memcached_return
- increment(const char *key, unsigned int offset, uint64_t *value)
+
+ bool set_by_key(const std::string &master_key,
+ const std::string &key,
+ const std::string &value,
+ time_t expiration,
+ uint32_t flags)
{
- return memcached_increment(&memc, key, strlen(key),
- offset, value);
+ memcached_return rc= memcached_set_by_key(&memc, master_key.c_str(),
+ master_key.length(),
+ key.c_str(), key.length(),
+ value.c_str(), value.length(),
+ expiration,
+ flags);
+ return (rc == MEMCACHED_SUCCESS);
}
- memcached_return
- decrement(const char *key, unsigned int offset, uint64_t *value)
+
+ bool increment(const std::string &key, unsigned int offset, uint64_t *value)
+ {
+ memcached_return rc= memcached_increment(&memc, key.c_str(), key.length(),
+ offset, value);
+ return (rc == MEMCACHED_SUCCESS);
+ }
+
+ bool decrement(const std::string &key, unsigned int offset, uint64_t *value)
{
- return memcached_decrement(&memc, key, strlen(key),
- offset, value);
+ memcached_return rc= memcached_decrement(&memc, key.c_str(),
+ key.length(),
+ offset, value);
+ return (rc == MEMCACHED_SUCCESS);
}
- memcached_return add(const char *key, const char *value, size_t value_length)
+ bool add(const std::string &key, const std::string &value)
{
- return memcached_add(&memc, key, strlen(key), value, value_length, 0, 0);
+ memcached_return rc= memcached_add(&memc, key.c_str(), key.length(),
+ value.c_str(), value.length(), 0, 0);
+ return (rc == MEMCACHED_SUCCESS);
}
- memcached_return add_by_key(const char *master_key, const char *key,
- const char *value, size_t value_length)
+
+ bool add_by_key(const std::string &master_key,
+ const std::string &key,
+ const std::string &value)
{
- return memcached_add_by_key(&memc, master_key, strlen(master_key),
- key, strlen(key),
- value, value_length,
- 0, 0);
+ memcached_return rc= memcached_add_by_key(&memc,
+ master_key.c_str(),
+ master_key.length(),
+ key.c_str(),
+ key.length(),
+ value.c_str(),
+ value.length(),
+ 0, 0);
+ return (rc == MEMCACHED_SUCCESS);
}
- memcached_return replace(const char *key, const char *value,
- size_t value_length)
+ bool replace(const std::string &key, const std::string &value)
{
- return memcached_replace(&memc, key, strlen(key),
- value, value_length,
- 0, 0);
+ memcached_return rc= memcached_replace(&memc, key.c_str(), key.length(),
+ value.c_str(), value.length(),
+ 0, 0);
+ return (rc == MEMCACHED_SUCCESS);
}
- memcached_return replace_by_key(const char *master_key, const char *key,
- const char *value, size_t value_length)
+
+ bool replace_by_key(const std::string &master_key,
+ const std::string &key,
+ const std::string &value)
{
- return memcached_replace_by_key(&memc, master_key, strlen(master_key),
- key, strlen(key),
- value, value_length, 0, 0);
+ memcached_return rc= memcached_replace_by_key(&memc,
+ master_key.c_str(),
+ master_key.length(),
+ key.c_str(),
+ key.length(),
+ value.c_str(),
+ value.length(),
+ 0, 0);
+ return (rc == MEMCACHED_SUCCESS);
}
- memcached_return prepend(const char *key, const char *value,
- size_t value_length)
+ bool prepend(const std::string &key, const std::string &value)
{
- return memcached_prepend(&memc, key, strlen(key),
- value, value_length, 0, 0);
+ memcached_return rc= memcached_prepend(&memc, key.c_str(), key.length(),
+ value.c_str(), value.length(), 0, 0);
+ return (rc == MEMCACHED_SUCCESS);
}
- memcached_return prepend_by_key(const char *master_key, const char *key,
- const char *value, size_t value_length)
+
+ bool prepend_by_key(const std::string &master_key,
+ const std::string &key,
+ const std::string &value)
{
- return memcached_prepend_by_key(&memc, master_key, strlen(master_key),
- key, strlen(key),
- value, value_length,
- 0,
- 0);
+ memcached_return rc= memcached_prepend_by_key(&memc,
+ master_key.c_str(),
+ master_key.length(),
+ key.c_str(),
+ key.length(),
+ value.c_str(),
+ value.length(),
+ 0,
+ 0);
+ return (rc == MEMCACHED_SUCCESS);
}
- memcached_return append(const char *key, const char *value,
- size_t value_length)
+ bool append(const std::string &key, const std::string &value)
{
- return memcached_append(&memc, key, strlen(key),
- value, value_length, 0, 0);
+ memcached_return rc= memcached_append(&memc,
+ key.c_str(),
+ key.length(),
+ value.c_str(),
+ value.length(),
+ 0, 0);
+ return (rc == MEMCACHED_SUCCESS);
}
- memcached_return append_by_key(const char *master_key, const char *key,
- const char *value, size_t value_length)
+
+ bool append_by_key(const std::string &master_key,
+ const std::string &key,
+ const std::string &value)
{
- return memcached_append_by_key(&memc,
- master_key, strlen(master_key),
- key, strlen(key),
- value, value_length, 0, 0);
+ memcached_return rc= memcached_append_by_key(&memc,
+ master_key.c_str(),
+ master_key.length(),
+ key.c_str(),
+ key.length(),
+ value.c_str(),
+ value.length(),
+ 0, 0);
+ return (rc == MEMCACHED_SUCCESS);
}
- memcached_return cas(const char *key, const char *value,
- size_t value_length, uint64_t cas_arg)
+
+ bool cas(const std::string &key,
+ const std::string &value,
+ uint64_t cas_arg)
{
- return memcached_cas(&memc, key, strlen(key),
- value, value_length, 0, 0, cas_arg);
+ memcached_return rc= memcached_cas(&memc, key.c_str(), key.length(),
+ value.c_str(), value.length(),
+ 0, 0, cas_arg);
+ return (rc == MEMCACHED_SUCCESS);
}
- memcached_return cas_by_key(const char *master_key, const char *key,
- const char *value, size_t value_length,
- uint64_t cas_arg)
+
+ bool cas_by_key(const std::string &master_key,
+ const std::string &key,
+ const std::string &value,
+ uint64_t cas_arg)
{
- return memcached_cas_by_key(&memc,
- master_key, strlen(master_key),
- key, strlen(key),
- value, value_length,
- 0, 0, cas_arg);
+ memcached_return rc= memcached_cas_by_key(&memc,
+ master_key.c_str(),
+ master_key.length(),
+ key.c_str(),
+ key.length(),
+ value.c_str(),
+ value.length(),
+ 0, 0, cas_arg);
+ return (rc == MEMCACHED_SUCCESS);
}
+
// using 'remove' vs. 'delete' since 'delete' is a keyword
- memcached_return remove(const char *key)
+ bool remove(const std::string &key)
{
- return memcached_delete (&memc, key, strlen(key), 0);
+ memcached_return rc= memcached_delete(&memc, key.c_str(), key.length(), 0);
+ return (rc == MEMCACHED_SUCCESS);
+ }
+ bool delete_by_key(const std::string &master_key,
+ const std::string &key)
+ {
+ memcached_return rc= memcached_delete_by_key(&memc,
+ master_key.c_str(),
+ master_key.length(),
+ key.c_str(),
+ key.length(),
+ 0);
+ return (rc == MEMCACHED_SUCCESS);
}
- memcached_return delete_by_key(const char *master_key, const char *key)
+
+ bool flush(time_t expiration)
{
- return memcached_delete_by_key(&memc, master_key, strlen(master_key),
- key, strlen(key), 0);
+ memcached_return rc= memcached_flush(&memc, expiration);
+ return (rc == MEMCACHED_SUCCESS);
}
- ~Memcached()
+
+ bool fetch_execute(memcached_execute_function *callback,
+ void *context,
+ unsigned int num_of_callbacks)
{
- memcached_free(&memc);
+ memcached_return rc= memcached_fetch_execute(&memc,
+ callback,
+ context,
+ num_of_callbacks);
+ return (rc == MEMCACHED_SUCCESS);
}
+
+ const std::string lib_version() const
+ {
+ const char *ver= memcached_lib_version();
+ const std::string version(ver);
+ return version;
+ }
+
+private:
+ memcached_st memc;
+ memcached_result_st result;
};
#include "test.h"
+#include <string>
+
+using namespace std;
+
extern "C" {
- test_return basic_test(memcached_st *memc);
- uint8_t increment_test(memcached_st *memc);
- test_return basic_master_key_test(memcached_st *memc);
void *world_create(void);
void world_destroy(void *p);
}
-test_return basic_test(memcached_st *memc)
+static test_return basic_test(memcached_st *memc)
{
Memcached foo(memc);
- const char *value_set= "This is some data";
- char *value;
+ const string value_set("This is some data");
+ string value;
size_t value_length;
- foo.set("mine", value_set, strlen(value_set));
+ foo.set("mine", value_set, 0, 0);
value= foo.get("mine", &value_length);
- assert((memcmp(value, value_set, value_length) == 0));
+ assert((memcmp(value.c_str(), value_set.c_str(), value_length) == 0));
return TEST_SUCCESS;
}
-uint8_t increment_test(memcached_st *memc)
+static test_return increment_test(memcached_st *memc)
{
Memcached mcach(memc);
- memcached_return rc;
- const char *key= "inctest";
- const char *inc_value= "1";
- char *ret_value;
+ bool rc;
+ const string key("inctest");
+ const string inc_value("1");
+ string ret_value;
uint64_t int_inc_value;
uint64_t int_ret_value;
size_t value_length;
- mcach.set(key, inc_value, strlen(inc_value));
+ mcach.set(key, inc_value, 0, 0);
ret_value= mcach.get(key, &value_length);
- printf("\nretvalue %s\n",ret_value);
- int_inc_value= uint64_t(atol(inc_value));
- int_ret_value= uint64_t(atol(ret_value));
+ printf("\nretvalue %s\n",ret_value.c_str());
+ int_inc_value= uint64_t(atol(inc_value.c_str()));
+ int_ret_value= uint64_t(atol(ret_value.c_str()));
assert(int_ret_value == int_inc_value);
rc= mcach.increment(key, 1, &int_ret_value);
- assert(rc == MEMCACHED_SUCCESS);
+ assert(rc == true);
assert(int_ret_value == 2);
rc= mcach.increment(key, 1, &int_ret_value);
- assert(rc == MEMCACHED_SUCCESS);
+ assert(rc == true);
assert(int_ret_value == 3);
rc= mcach.increment(key, 5, &int_ret_value);
- assert(rc == MEMCACHED_SUCCESS);
+ assert(rc == true);
assert(int_ret_value == 8);
- return 0;
+ return TEST_SUCCESS;
}
-test_return basic_master_key_test(memcached_st *memc)
+static test_return basic_master_key_test(memcached_st *memc)
{
- Memcached foo(memc);
- const char *value_set= "Data for server A";
- const char *master_key_a= "server-a";
- const char *master_key_b= "server-b";
- const char *key= "xyz";
- char *value;
+ Memcached foo(memc);
+ const string value_set("Data for server A");
+ const string master_key_a("server-a");
+ const string master_key_b("server-b");
+ const string key("xyz");
+ string value;
size_t value_length;
- foo.set_by_key(master_key_a, key, value_set, strlen(value_set));
+ foo.set_by_key(master_key_a, key, value_set, 0, 0);
value= foo.get_by_key(master_key_a, key, &value_length);
- assert((memcmp(value, value_set, value_length) == 0));
+ assert((memcmp(value.c_str(), value_set.c_str(), value_length) == 0));
value= foo.get_by_key(master_key_b, key, &value_length);
- assert((memcmp(value, value_set, value_length) == 0));
+ assert((memcmp(value.c_str(), value_set.c_str(), value_length) == 0));
+
+ return TEST_SUCCESS;
+}
+
+/* Count the results */
+static memcached_return callback_counter(memcached_st *ptr __attribute__((unused)),
+ memcached_result_st *result __attribute__((unused)),
+ void *context)
+{
+ unsigned int *counter= static_cast<unsigned int *>(context);
+
+ *counter= *counter + 1;
+
+ return MEMCACHED_SUCCESS;
+}
+
+static test_return mget_result_function(memcached_st *memc)
+{
+ Memcached mc(memc);
+ bool rc;
+ string key1("fudge");
+ string key2("son");
+ string key3("food");
+ vector<string> keys;
+ keys.reserve(3);
+ keys.push_back(key1);
+ keys.push_back(key2);
+ keys.push_back(key3);
+ unsigned int counter;
+ memcached_execute_function callbacks[1];
+
+ /* We need to empty the server before we continue the test */
+ rc= mc.flush(0);
+ rc= mc.set_all(keys, keys, 50, 9);
+ assert(rc == true);
+
+ rc= mc.mget(keys);
+ assert(rc == true);
+
+ callbacks[0]= &callback_counter;
+ counter= 0;
+ rc= mc.fetch_execute(callbacks, static_cast<void *>(&counter), 1);
+
+ assert(counter == 3);
return TEST_SUCCESS;
}
+static test_return mget_test(memcached_st *memc)
+{
+ Memcached mc(memc);
+ bool rc;
+ memcached_return mc_rc;
+ vector<string> keys;
+ keys.reserve(3);
+ keys.push_back("fudge");
+ keys.push_back("son");
+ keys.push_back("food");
+ uint32_t flags;
+
+ string return_key;
+ size_t return_key_length;
+ string return_value;
+ size_t return_value_length;
+
+ /* We need to empty the server before we continue the test */
+ rc= mc.flush(0);
+ assert(rc == true);
+
+ rc= mc.mget(keys);
+ assert(rc == true);
+
+ while (mc.fetch(return_key, return_value, &return_key_length,
+ &return_value_length, &flags, &mc_rc))
+ {
+ assert(return_value.length() != 0);
+ }
+ assert(return_value_length == 0);
+ assert(mc_rc == MEMCACHED_END);
+
+ rc= mc.set_all(keys, keys, 50, 9);
+ assert(rc == true);
+
+ rc= mc.mget(keys);
+ assert(rc == true);
+
+ while ((mc.fetch(return_key, return_value, &return_key_length,
+ &return_value_length, &flags, &mc_rc)))
+ {
+ assert(return_value.length() != 0);
+ assert(mc_rc == MEMCACHED_SUCCESS);
+ assert(return_key_length == return_value_length);
+ assert(!memcmp(return_value.c_str(), return_key.c_str(), return_value_length));
+ }
+
+ return TEST_SUCCESS;
+}
test_st tests[] ={
- {"basic", 0, basic_test },
- {"basic_master_key", 0, basic_master_key_test },
+ { "basic", 0, basic_test },
+ { "basic_master_key", 0, basic_master_key_test },
+ { "increment_test", 0, increment_test },
+ { "mget", 1, mget_test },
+ { "mget_result_function", 1, mget_result_function },
{0, 0, 0}
};
projects / awesomized / libmemcached / commitdiff
