int32_t CVDCMemcache::MemcacheIfKeyExist(memcached_st* memc, const char* szKey, const size_t keyLen)
{
DB_MUTEX_GUARD(cf_mutex, m_dbcrit);
memcached_return rc;
rc = memcached_exist(memc, szKey, keyLen);
if(rc != MEMCACHED_SUCCESS)
{
WRITE_WARNING_LOG( "warning: key is not exist in memcache! errorcode=%d\n", rc);
return E_MEMCACHE_KEY_NOTFOUND;
}
//WRITE_DEBUG_LOG( "the key is exist in memcache! key=%s, keylen=%d\n", szKey, keyLen);
return S_OK;
}
bool Memcached::CheckExist(std::string& sKey)
{
if (m_pMemc == NULL)
{
return false;
}
m_rc = memcached_exist(m_pMemc, sKey.c_str(), sKey.length());
if (m_rc != MEMCACHED_SUCCESS)
{
m_sErrMsg = "memchaced_exist failed.";
return false;
}
return true;
}
ESPCacheResult ESPMemCached::exists(const char* groupID, const char* cacheID)
{
#if (LIBMEMCACHED_VERSION_HEX<0x53000)
throw makeStringException(0, "memcached_exist not supported in this version of libmemcached");
#endif
memcached_return_t rc;
size_t groupIDLength = strlen(groupID);
if (groupIDLength)
rc = memcached_exist_by_key(connection, groupID, groupIDLength, cacheID, strlen(cacheID));
else
rc = memcached_exist(connection, cacheID, strlen(cacheID));
if (rc != MEMCACHED_NOTFOUND)
assertOnError(rc, "'Exists' request failed - ");
return rc == MEMCACHED_NOTFOUND ? ESPCacheNotFound : (rc == MEMCACHED_SUCCESS ? ESPCacheSuccess : ESPCacheError);
}
int memcached_key_exist(char *key, size_t key_len)
{
if (memcached_exist(memc, key, key_len) == MEMCACHED_SUCCESS)
return 0;
return -1;
}
