const redis_result* redis_client::run(dbuf_pool* pool, const redis_request& req,
size_t nchildren)
{
// 重置协议处理状态
bool retried = false;
redis_result* result;
struct iovec* iov = req.get_iovec();
size_t size = req.get_size();
while (true)
{
if (!conn_.opened() && conn_.open(addr_, conn_timeout_,
rw_timeout_) == false)
{
logger_error("connect server: %s error: %s",
addr_, last_serror());
return NULL;
}
if (size > 0 && conn_.writev(iov, (int) size) == -1)
{
conn_.close();
if (retry_ && !retried)
{
retried = true;
continue;
}
logger_error("write to redis(%s) error: %s",
addr_, last_serror());
return NULL;
}
if (nchildren >= 1)
result = get_redis_objects(pool, nchildren);
else
result = get_redis_object(pool);
if (result != NULL)
return result;
conn_.close();
if (!retry_ || retried)
break;
retried = true;
}
return NULL;
}
redis_result* redis_client::get_redis_objects(dbuf_pool* pool, size_t nobjs)
{
acl_assert(nobjs >= 1);
redis_result* objs = new(pool) redis_result(pool);
objs->set_type(REDIS_RESULT_ARRAY);
objs->set_size(nobjs);
for (size_t i = 0; i < nobjs; i++)
{
redis_result* obj = get_redis_object(pool);
if (obj == NULL)
return NULL;
objs->put(obj, i);
}
return objs;
}
const redis_result* redis_client::run(dbuf_pool* pool, const string& req,
size_t nchildren)
{
// 重置协议处理状态
bool retried = false;
redis_result* result;
while (true)
{
if (open() == false)
return NULL;
if (!req.empty() && conn_.write(req) == -1)
{
close();
if (retry_ && !retried)
{
retried = true;
continue;
}
logger_error("write to redis(%s) error: %s",
addr_, last_serror());
return NULL;
}
if (nchildren >= 1)
result = get_redis_objects(pool, nchildren);
else
result = get_redis_object(pool);
if (result != NULL)
return result;
close();
if (!retry_ || retried)
break;
retried = true;
}
return NULL;
}
redis_result* redis_client::get_redis_array(dbuf_pool* pool)
{
buf_.clear();
if (conn_.gets(buf_) == false)
return NULL;
redis_result* rr = new(pool) redis_result(pool);
rr->set_type(REDIS_RESULT_ARRAY);
int count = atoi(buf_.c_str());
if (count <= 0)
return rr;
rr->set_size((size_t) count);
for (int i = 0; i < count; i++)
{
redis_result* child = get_redis_object(pool);
if (child == NULL)
return NULL;
rr->put(child, i);
}
return rr;
}