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cpp_hash_client.hpp
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297 lines (234 loc) · 8.3 KB
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#ifndef cpp_hash_client_h__
#define cpp_hash_client_h__
#include "client_interface.hpp"
namespace cpp_redis
{
class hash_client :public client {
public:
hash_client() = default;
virtual ~hash_client() {
}
//当 HSET 命令在哈希表中新创建 field 域并成功为它设置值时， 命令返回 1
//如果域 field 已经存在于哈希表， 并且 HSET 命令成功使用新值覆盖了它的旧值， 那么命令返回 0
virtual int hash_set(std::string&& key, std::string&& field, std::string&& value)
{
check_args();
std::string msg = request_->req_n_key(request_->get_cmd(redis_cmd::hash_set),std::forward<std::string>(key),
std::forward<std::string>(field), std::forward<std::string>(value));
if (!socket_->send_msg(std::move(msg))) {
return 0;
}
const auto res = socket_->get_responese();
if (res->get_result_code() != status::int_result_ &&
res->get_result_code() != status::status_){
return 0;
}
const auto results = res->get_int_results();
return ((!results.empty())?results[0]:0);
}
//和string数据结构一样,可以实现分布式锁
//HSETNX 命令在设置成功时返回 1 ， 在给定域已经存在而放弃执行设置操作时返回 0.
//如果给定域已经存在于哈希表当中， 那么命令将放弃执行设置操作。
virtual int hash_setx(std::string&& key, std::string&& field, std::string&& value)
{
check_args();
std::string msg = request_->req_n_key(request_->get_cmd(redis_cmd::hash_setx), std::forward<std::string>(key),
std::forward<std::string>(field), std::forward<std::string>(value));
if (!socket_->send_msg(std::move(msg))) {
return 0;
}
const auto res = socket_->get_responese();
if (res->get_result_code() != status::int_result_ &&
res->get_result_code() != status::status_) {
return 0;
}
const auto results = res->get_int_results();
return ((!results.empty()) ? results[0] : 0);
}
virtual int hash_exists(std::string&& key, std::string&& field)
{
check_args();
std::string msg = request_->req_n_key(request_->get_cmd(redis_cmd::hash_exists), std::forward<std::string>(key),
std::forward<std::string>(field));
if (!socket_->send_msg(std::move(msg))) {
return 0;
}
const auto res = socket_->get_responese();
if (res->get_result_code() != status::int_result_ &&
res->get_result_code() != status::status_) {
return 0;
}
const auto results = res->get_int_results();
return ((!results.empty()) ? results[0] : 0);
}
virtual std::string hash_get(std::string&& key, std::string&& field)
{
check_args();
std::string msg = request_->req_n_key(request_->get_cmd(redis_cmd::hash_get),std::forward<std::string>(key), std::forward<std::string>(field));
if (!socket_->send_msg(std::move(msg))) {
return "";
}
const auto res = socket_->get_responese();
if (res->get_result_code()!= status::results_ &&
res->get_result_code() != status::status_){
return "";
}
const auto results = res->get_results();
if (results.empty()){
return "";
}
return ((results[0] == g_nil) ? "" : std::move(results[0]));
}
virtual int hash_del(std::vector<std::string>&& fields)
{
check_args();
std::string msg = request_->req_n_keys(request_->get_cmd(redis_cmd::hash_del), std::forward<std::vector<std::string>>(fields));
if (!socket_->send_msg(std::move(msg))) {
return 0;
}
const auto res = socket_->get_responese();
if (res->get_result_code() != status::int_result_ &&
res->get_result_code() != status::status_){
return 0;
}
const auto results = res->get_int_results();
return ((!results.empty()) ? results[0] : 0);
}
virtual int hash_len(std::string&& key)
{
check_args();
std::string msg = request_->req_n_key(request_->get_cmd(redis_cmd::hash_len),std::forward<std::string>(key));
if (!socket_->send_msg(std::move(msg))) {
return 0;
}
const auto res = socket_->get_responese();
if (res->get_result_code() != status::int_result_ &&
res->get_result_code() != status::status_) {
return 0;
}
const auto results = res->get_int_results();
return ((!results.empty()) ? results[0] : 0);
}
virtual int hash_strlen(std::string&& key, std::string&& field)
{
check_args();
std::string msg = request_->req_n_key(request_->get_cmd(redis_cmd::hash_strlen), std::forward<std::string>(key),
std::forward<std::string>(field));
if (!socket_->send_msg(std::move(msg))) {
return 0;
}
const auto res = socket_->get_responese();
if (res->get_result_code() != status::int_result_ &&
res->get_result_code() != status::status_) {
return 0;
}
const auto results = res->get_int_results();
return ((!results.empty()) ? results[0] : 0);
}
//返回增加值
//一个新的哈希表被创建并执行HINCRBY 命令(注意地方)
virtual int hash_incrby(std::string&& key, std::string&& field, std::string&& increment)
{
check_args();
std::string msg = request_->req_n_key(request_->get_cmd(redis_cmd::hash_incrby), std::forward<std::string>(key),
std::forward<std::string>(field),std::forward<std::string>(increment));
if (!socket_->send_msg(std::move(msg))) {
return 0;
}
const auto res = socket_->get_responese();
if (res->get_result_code() != status::int_result_ &&
res->get_result_code() != status::status_) {
return 0;
}
const auto results = res->get_int_results();
return ((!results.empty()) ? results[0] : 0);
}
virtual std::string hash_incrby_float(std::string&& key, std::string&& field, std::string&& increment)
{
check_args();
std::string msg = request_->req_n_key(request_->get_cmd(redis_cmd::hash_incrby_float), std::forward<std::string>(key),
std::forward<std::string>(field), std::forward<std::string>(increment));
if (!socket_->send_msg(std::move(msg))) {
return "";
}
const auto res = socket_->get_responese();
if (res->get_result_code() != status::results_ &&
res->get_result_code() != status::status_) {
return"";
}
const auto results = res->get_results();
return ((!results.empty()) ? std::move(results[0]) : "");
}
virtual bool hash_mset(std::vector<std::string>&& keys)
{
std::string msg = request_->req_n_keys(request_->get_cmd(redis_cmd::hash_mset),
std::forward<std::vector<std::string>>(keys));
if (!socket_->send_msg(std::move(msg))) {
return false;
}
const auto res = socket_->get_responese();
if (res->get_result_code() != status::status_){
return false;
}
return true;
}
virtual std::vector <std::string> hash_mget(std::vector<std::string>&& keys)
{
std::string msg = request_->req_n_keys(request_->get_cmd(redis_cmd::hash_mget), std::forward<std::vector<std::string>>(keys));
if (!socket_->send_msg(std::move(msg))) {
return {};
}
const auto res = socket_->get_responese();
if (res->get_result_code() != status::results_ &&
res->get_result_code() != status::status_){
return {} ;
}
return std::move(res->get_results());
}
//返回所有的keys
virtual std::vector <std::string> hash_keys(std::string&& key)
{
std::string msg = request_->req_n_key(request_->get_cmd(redis_cmd::hash_keys), std::forward<std::string>(key));
if (!socket_->send_msg(std::move(msg))) {
return {};
}
const auto res = socket_->get_responese();
if (res->get_result_code() != status::results_ &&
res->get_result_code() != status::status_){
return {} ;
}
return std::move(res->get_results());
}
//返回key中的所有值
virtual std::vector <std::string> hash_vals(std::string&& key)
{
std::string msg = request_->req_n_key(request_->get_cmd(redis_cmd::hash_vals),
std::forward<std::string>(key));
if (!socket_->send_msg(std::move(msg))) {
return {};
}
const auto res = socket_->get_responese();
if (res->get_result_code() != status::results_ &&
res->get_result_code() != status::status_){
return {} ;
}
return std::move(res->get_results());
}
//返回key中的域和值
virtual std::vector <std::string> hash_get_all(std::string&& key)
{
std::string msg = request_->req_n_key(request_->get_cmd(redis_cmd::hash_get_all),
std::forward<std::string>(key));
if (!socket_->send_msg(std::move(msg))) {
return {};
}
const auto res = socket_->get_responese();
if (res->get_result_code() != status::results_ &&
res->get_result_code() != status::status_){
return {} ;
}
return std::move(res->get_results());
}
};
}
#endif // cpp_hash_client_h__