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// Copyright (c) 2015-present, Qihoo, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
#include "include/pika_kv.h"
#include <memory>
#include "include/pika_command.h"
#include "include/pika_slot_command.h"
#include "include/pika_cache.h"
#include "include/pika_conf.h"
#include "pstd/include/pstd_string.h"
extern std::unique_ptr<PikaConf> g_pika_conf;
/* SET key value [NX] [XX] [EX <seconds>] [PX <milliseconds>] */
void SetCmd::DoInitial() {
if (!CheckArg(argv_.size())) {
res_.SetRes(CmdRes::kWrongNum, kCmdNameSet);
return;
}
key_ = argv_[1];
value_ = argv_[2];
condition_ = SetCmd::kNONE;
sec_ = 0;
size_t index = 3;
while (index != argv_.size()) {
std::string opt = argv_[index];
if (strcasecmp(opt.data(), "xx") == 0) {
condition_ = SetCmd::kXX;
} else if (strcasecmp(opt.data(), "nx") == 0) {
condition_ = SetCmd::kNX;
} else if (strcasecmp(opt.data(), "vx") == 0) {
condition_ = SetCmd::kVX;
index++;
if (index == argv_.size()) {
res_.SetRes(CmdRes::kSyntaxErr);
return;
} else {
target_ = argv_[index];
}
} else if ((strcasecmp(opt.data(), "ex") == 0) || (strcasecmp(opt.data(), "px") == 0)) {
condition_ = (condition_ == SetCmd::kNONE) ? SetCmd::kEXORPX : condition_;
index++;
if (index == argv_.size()) {
res_.SetRes(CmdRes::kSyntaxErr);
return;
}
if (pstd::string2int(argv_[index].data(), argv_[index].size(), &sec_) == 0) {
res_.SetRes(CmdRes::kInvalidInt);
return;
}
if (strcasecmp(opt.data(), "px") == 0) {
sec_ /= 1000;
}
has_ttl_ = true;
} else {
res_.SetRes(CmdRes::kSyntaxErr);
return;
}
index++;
}
}
void SetCmd::Do() {
int32_t res = 1;
switch (condition_) {
case SetCmd::kXX:
s_ = db_->storage()->Setxx(key_, value_, &res, sec_);
break;
case SetCmd::kNX:
s_ = db_->storage()->Setnx(key_, value_, &res, sec_);
break;
case SetCmd::kVX:
s_ = db_->storage()->Setvx(key_, target_, value_, &success_, sec_);
break;
case SetCmd::kEXORPX:
s_ = db_->storage()->Setex(key_, value_, sec_);
break;
default:
s_ = db_->storage()->Set(key_, value_);
break;
}
if (s_.ok() || s_.IsNotFound()) {
if (condition_ == SetCmd::kVX) {
res_.AppendInteger(success_);
} else {
if (res == 1) {
res_.SetRes(CmdRes::kOk);
AddSlotKey("k", key_, db_);
} else {
res_.AppendStringLen(-1);
}
}
} else {
res_.SetRes(CmdRes::kErrOther, s_.ToString());
}
}
void SetCmd::DoThroughDB() {
Do();
}
void SetCmd::DoUpdateCache() {
if (SetCmd::kNX == condition_) {
return;
}
if (s_.ok()) {
std::string CachePrefixKeyK = PCacheKeyPrefixK + key_;
if (has_ttl_) {
db_->cache()->Setxx(CachePrefixKeyK, value_, sec_);
} else {
db_->cache()->SetxxWithoutTTL(CachePrefixKeyK, value_);
}
}
}
std::string SetCmd::ToRedisProtocol() {
if (condition_ == SetCmd::kEXORPX) {
std::string content;
content.reserve(RAW_ARGS_LEN);
RedisAppendLen(content, 4, "*");
// to pksetexat cmd
std::string pksetexat_cmd("pksetexat");
RedisAppendLenUint64(content, pksetexat_cmd.size(), "$");
RedisAppendContent(content, pksetexat_cmd);
// key
RedisAppendLenUint64(content, key_.size(), "$");
RedisAppendContent(content, key_);
// time_stamp
char buf[100];
auto time_stamp = time(nullptr) + sec_;
pstd::ll2string(buf, 100, time_stamp);
std::string at(buf);
RedisAppendLenUint64(content, at.size(), "$");
RedisAppendContent(content, at);
// value
RedisAppendLenUint64(content, value_.size(), "$");
RedisAppendContent(content, value_);
return content;
} else {
return Cmd::ToRedisProtocol();
}
}
void GetCmd::DoInitial() {
if (!CheckArg(argv_.size())) {
res_.SetRes(CmdRes::kWrongNum, kCmdNameGet);
return;
}
key_ = argv_[1];
}
void GetCmd::Do() {
s_ = db_->storage()->GetWithTTL(key_, &value_, &sec_);
if (s_.ok()) {
res_.AppendStringLenUint64(value_.size());
res_.AppendContent(value_);
} else if (s_.IsNotFound()) {
res_.AppendStringLen(-1);
} else {
res_.SetRes(CmdRes::kErrOther, s_.ToString());
}
}
void GetCmd::ReadCache() {
std::string CachePrefixKeyK = PCacheKeyPrefixK + key_;
auto s = db_->cache()->Get(CachePrefixKeyK, &value_);
if (s.ok()) {
res_.AppendStringLen(value_.size());
res_.AppendContent(value_);
} else {
res_.SetRes(CmdRes::kCacheMiss);
}
}
void GetCmd::DoThroughDB() {
res_.clear();
Do();
}
void GetCmd::DoUpdateCache() {
if (s_.ok()) {
std::string CachePrefixKeyK = PCacheKeyPrefixK + key_;
db_->cache()->WriteKVToCache(CachePrefixKeyK, value_, sec_);
}
}
void DelCmd::DoInitial() {
if (!CheckArg(argv_.size())) {
res_.SetRes(CmdRes::kWrongNum, name());
return;
}
auto iter = argv_.begin();
keys_.assign(++iter, argv_.end());
}
void DelCmd::Do() {
std::map<storage::DataType, storage::Status> type_status;
int64_t count = db_->storage()->Del(keys_, &type_status);
if (count >= 0) {
res_.AppendInteger(count);
s_ = rocksdb::Status::OK();
std::vector<std::string>::const_iterator it;
for (it = keys_.begin(); it != keys_.end(); it++) {
RemSlotKey(*it, db_);
}
} else {
res_.SetRes(CmdRes::kErrOther, "delete error");
s_ = rocksdb::Status::Corruption("delete error");
}
}
void DelCmd::DoThroughDB() {
Do();
}
void DelCmd::DoUpdateCache() {
if (s_.ok()) {
std::vector<std::string> v;
for (auto key : keys_) {
v.emplace_back(PCacheKeyPrefixK + key);
v.emplace_back(PCacheKeyPrefixL + key);
v.emplace_back(PCacheKeyPrefixZ + key);
v.emplace_back(PCacheKeyPrefixS + key);
v.emplace_back(PCacheKeyPrefixH + key);
}
db_->cache()->Del(v);
}
}
void DelCmd::Split(const HintKeys& hint_keys) {
std::map<storage::DataType, storage::Status> type_status;
int64_t count = db_->storage()->Del(hint_keys.keys, &type_status);
if (count >= 0) {
split_res_ += count;
} else {
res_.SetRes(CmdRes::kErrOther, "delete error");
}
}
void DelCmd::Merge() { res_.AppendInteger(split_res_); }
void DelCmd::DoBinlog() {
std::string opt = argv_.at(0);
for(auto& key: keys_) {
argv_.clear();
argv_.emplace_back(opt);
argv_.emplace_back(key);
Cmd::DoBinlog();
}
}
void IncrCmd::DoInitial() {
if (!CheckArg(argv_.size())) {
res_.SetRes(CmdRes::kWrongNum, kCmdNameIncr);
return;
}
key_ = argv_[1];
}
void IncrCmd::Do() {
s_ = db_->storage()->Incrby(key_, 1, &new_value_);
if (s_.ok()) {
res_.AppendContent(":" + std::to_string(new_value_));
AddSlotKey("k", key_, db_);
} else if (s_.IsCorruption() && s_.ToString() == "Corruption: Value is not a integer") {
res_.SetRes(CmdRes::kInvalidInt);
} else if (s_.IsInvalidArgument()) {
res_.SetRes(CmdRes::kOverFlow);
} else {
res_.SetRes(CmdRes::kErrOther, s_.ToString());
}
}
void IncrCmd::DoThroughDB() {
Do();
}
void IncrCmd::DoUpdateCache() {
if (s_.ok()) {
std::string CachePrefixKeyK = PCacheKeyPrefixK + key_;
db_->cache()->Incrxx(CachePrefixKeyK);
}
}
void IncrbyCmd::DoInitial() {
if (!CheckArg(argv_.size())) {
res_.SetRes(CmdRes::kWrongNum, kCmdNameIncrby);
return;
}
key_ = argv_[1];
if (pstd::string2int(argv_[2].data(), argv_[2].size(), &by_) == 0) {
res_.SetRes(CmdRes::kInvalidInt, kCmdNameIncrby);
return;
}
}
void IncrbyCmd::Do() {
s_ = db_->storage()->Incrby(key_, by_, &new_value_);
if (s_.ok()) {
res_.AppendContent(":" + std::to_string(new_value_));
AddSlotKey("k", key_, db_);
} else if (s_.IsCorruption() && s_.ToString() == "Corruption: Value is not a integer") {
res_.SetRes(CmdRes::kInvalidInt);
} else if (s_.IsInvalidArgument()) {
res_.SetRes(CmdRes::kOverFlow);
} else {
res_.SetRes(CmdRes::kErrOther, s_.ToString());
}
}
void IncrbyCmd::DoThroughDB() {
Do();
}
void IncrbyCmd::DoUpdateCache() {
if (s_.ok()) {
std::string CachePrefixKeyK = PCacheKeyPrefixK + key_;
db_->cache()->IncrByxx(CachePrefixKeyK, by_);
}
}
void IncrbyfloatCmd::DoInitial() {
if (!CheckArg(argv_.size())) {
res_.SetRes(CmdRes::kWrongNum, kCmdNameIncrbyfloat);
return;
}
key_ = argv_[1];
value_ = argv_[2];
if (pstd::string2d(argv_[2].data(), argv_[2].size(), &by_) == 0) {
res_.SetRes(CmdRes::kInvalidFloat);
return;
}
}
void IncrbyfloatCmd::Do() {
s_ = db_->storage()->Incrbyfloat(key_, value_, &new_value_);
if (s_.ok()) {
res_.AppendStringLenUint64(new_value_.size());
res_.AppendContent(new_value_);
AddSlotKey("k", key_, db_);
} else if (s_.IsCorruption() && s_.ToString() == "Corruption: Value is not a vaild float") {
res_.SetRes(CmdRes::kInvalidFloat);
} else if (s_.IsInvalidArgument()) {
res_.SetRes(CmdRes::KIncrByOverFlow);
} else {
res_.SetRes(CmdRes::kErrOther, s_.ToString());
}
}
void IncrbyfloatCmd::DoThroughDB() {
Do();
}
void IncrbyfloatCmd::DoUpdateCache() {
if (s_.ok()) {
long double long_double_by;
if (storage::StrToLongDouble(value_.data(), value_.size(), &long_double_by) != -1) {
std::string CachePrefixKeyK = PCacheKeyPrefixK + key_;
db_->cache()->Incrbyfloatxx(CachePrefixKeyK, long_double_by);
}
}
}
void DecrCmd::DoInitial() {
if (!CheckArg(argv_.size())) {
res_.SetRes(CmdRes::kWrongNum, kCmdNameDecr);
return;
}
key_ = argv_[1];
}
void DecrCmd::Do() {
s_= db_->storage()->Decrby(key_, 1, &new_value_);
if (s_.ok()) {
res_.AppendContent(":" + std::to_string(new_value_));
} else if (s_.IsCorruption() && s_.ToString() == "Corruption: Value is not a integer") {
res_.SetRes(CmdRes::kInvalidInt);
} else if (s_.IsInvalidArgument()) {
res_.SetRes(CmdRes::kOverFlow);
} else {
res_.SetRes(CmdRes::kErrOther, s_.ToString());
}
}
void DecrCmd::DoThroughDB() {
Do();
}
void DecrCmd::DoUpdateCache() {
if (s_.ok()) {
std::string CachePrefixKeyK = PCacheKeyPrefixK + key_;
db_->cache()->Decrxx(CachePrefixKeyK);
}
}
void DecrbyCmd::DoInitial() {
if (!CheckArg(argv_.size())) {
res_.SetRes(CmdRes::kWrongNum, kCmdNameDecrby);
return;
}
key_ = argv_[1];
if (pstd::string2int(argv_[2].data(), argv_[2].size(), &by_) == 0) {
res_.SetRes(CmdRes::kInvalidInt);
return;
}
}
void DecrbyCmd::Do() {
s_ = db_->storage()->Decrby(key_, by_, &new_value_);
if (s_.ok()) {
AddSlotKey("k", key_, db_);
res_.AppendContent(":" + std::to_string(new_value_));
} else if (s_.IsCorruption() && s_.ToString() == "Corruption: Value is not a integer") {
res_.SetRes(CmdRes::kInvalidInt);
} else if (s_.IsInvalidArgument()) {
res_.SetRes(CmdRes::kOverFlow);
} else {
res_.SetRes(CmdRes::kErrOther, s_.ToString());
}
}
void DecrbyCmd::DoThroughDB() {
Do();
}
void DecrbyCmd::DoUpdateCache() {
if (s_.ok()) {
std::string CachePrefixKeyK = PCacheKeyPrefixK + key_;
db_->cache()->DecrByxx(CachePrefixKeyK, by_);
}
}
void GetsetCmd::DoInitial() {
if (!CheckArg(argv_.size())) {
res_.SetRes(CmdRes::kWrongNum, kCmdNameGetset);
return;
}
key_ = argv_[1];
new_value_ = argv_[2];
}
void GetsetCmd::Do() {
std::string old_value;
s_ = db_->storage()->GetSet(key_, new_value_, &old_value);
if (s_.ok()) {
if (old_value.empty()) {
res_.AppendContent("$-1");
} else {
res_.AppendStringLenUint64(old_value.size());
res_.AppendContent(old_value);
}
AddSlotKey("k", key_, db_);
} else {
res_.SetRes(CmdRes::kErrOther, s_.ToString());
}
}
void GetsetCmd::DoThroughDB() {
Do();
}
void GetsetCmd::DoUpdateCache() {
if (s_.ok()) {
std::string CachePrefixKeyK = PCacheKeyPrefixK + key_;
db_->cache()->SetxxWithoutTTL(CachePrefixKeyK, new_value_);
}
}
void AppendCmd::DoInitial() {
if (!CheckArg(argv_.size())) {
res_.SetRes(CmdRes::kWrongNum, kCmdNameAppend);
return;
}
key_ = argv_[1];
value_ = argv_[2];
}
void AppendCmd::Do() {
int32_t new_len = 0;
s_ = db_->storage()->Append(key_, value_, &new_len);
if (s_.ok() || s_.IsNotFound()) {
res_.AppendInteger(new_len);
AddSlotKey("k", key_, db_);
} else {
res_.SetRes(CmdRes::kErrOther, s_.ToString());
}
}
void AppendCmd::DoThroughDB(){
Do();
}
void AppendCmd::DoUpdateCache() {
if (s_.ok()) {
std::string CachePrefixKeyK = PCacheKeyPrefixK + key_;
db_->cache()->Appendxx(CachePrefixKeyK, value_);
}
}
void MgetCmd::DoInitial() {
if (!CheckArg(argv_.size())) {
res_.SetRes(CmdRes::kWrongNum, kCmdNameMget);
return;
}
keys_ = argv_;
keys_.erase(keys_.begin());
split_res_.resize(keys_.size());
}
void MgetCmd::Do() {
db_value_status_array_.clear();
s_ = db_->storage()->MGetWithTTL(keys_, &db_value_status_array_);
if (s_.ok()) {
res_.AppendArrayLenUint64(db_value_status_array_.size());
for (const auto& vs : db_value_status_array_) {
if (vs.status.ok()) {
res_.AppendStringLenUint64(vs.value.size());
res_.AppendContent(vs.value);
} else {
res_.AppendContent("$-1");
}
}
} else {
res_.SetRes(CmdRes::kErrOther, s_.ToString());
}
}
void MgetCmd::Split(const HintKeys& hint_keys) {
std::vector<storage::ValueStatus> vss;
const std::vector<std::string>& keys = hint_keys.keys;
rocksdb::Status s = db_->storage()->MGet(keys, &vss);
if (s.ok()) {
if (hint_keys.hints.size() != vss.size()) {
res_.SetRes(CmdRes::kErrOther, "internal Mget return size invalid");
}
const std::vector<int>& hints = hint_keys.hints;
for (size_t i = 0; i < vss.size(); ++i) {
split_res_[hints[i]] = vss[i];
}
} else {
res_.SetRes(CmdRes::kErrOther, s.ToString());
}
}
void MgetCmd::Merge() {
res_.AppendArrayLenUint64(split_res_.size());
for (const auto& vs : split_res_) {
if (vs.status.ok()) {
res_.AppendStringLenUint64(vs.value.size());
res_.AppendContent(vs.value);
} else {
res_.AppendContent("$-1");
}
}
}
void MgetCmd::ReadCache() {
if (1 < keys_.size()) {
res_.SetRes(CmdRes::kCacheMiss);
return;
}
std::string CachePrefixKeyK = PCacheKeyPrefixK + keys_[0];
auto s = db_->cache()->Get(CachePrefixKeyK, &value_);
if (s.ok()) {
res_.AppendArrayLen(1);
res_.AppendStringLen(value_.size());
res_.AppendContent(value_);
} else {
res_.SetRes(CmdRes::kCacheMiss);
}
}
void MgetCmd::DoThroughDB() {
res_.clear();
Do();
}
void MgetCmd::DoUpdateCache() {
for (size_t i = 0; i < keys_.size(); i++) {
if (db_value_status_array_[i].status.ok()) {
std::string CachePrefixKeyK;
CachePrefixKeyK = PCacheKeyPrefixK + keys_[i];
db_->cache()->WriteKVToCache(CachePrefixKeyK, db_value_status_array_[i].value, db_value_status_array_[i].ttl);
}
}
}
void KeysCmd::DoInitial() {
if (!CheckArg(argv_.size())) {
res_.SetRes(CmdRes::kWrongNum, kCmdNameKeys);
return;
}
pattern_ = argv_[1];
if (argv_.size() == 3) {
std::string opt = argv_[2];
if (strcasecmp(opt.data(), "string") == 0) {
type_ = storage::DataType::kStrings;
} else if (strcasecmp(opt.data(), "zset") == 0) {
type_ = storage::DataType::kZSets;
} else if (strcasecmp(opt.data(), "set") == 0) {
type_ = storage::DataType::kSets;
} else if (strcasecmp(opt.data(), "list") == 0) {
type_ = storage::DataType::kLists;
} else if (strcasecmp(opt.data(), "hash") == 0) {
type_ = storage::DataType::kHashes;
} else if (strcasecmp(opt.data(), "stream") == 0) {
type_ = storage::DataType::kStreams;
} else {
res_.SetRes(CmdRes::kSyntaxErr);
}
} else if (argv_.size() > 3) {
res_.SetRes(CmdRes::kSyntaxErr);
}
}
void KeysCmd::Do() {
int64_t total_key = 0;
int64_t cursor = 0;
size_t raw_limit = g_pika_conf->max_client_response_size();
std::string raw;
std::vector<std::string> keys;
do {
keys.clear();
cursor = db_->storage()->Scan(type_, cursor, pattern_, PIKA_SCAN_STEP_LENGTH, &keys);
for (const auto& key : keys) {
RedisAppendLenUint64(raw, key.size(), "$");
RedisAppendContent(raw, key);
}
if (raw.size() >= raw_limit) {
res_.SetRes(CmdRes::kErrOther, "Response exceeds the max-client-response-size limit");
return;
}
total_key += static_cast<int64_t>(keys.size());
} while (cursor != 0);
res_.AppendArrayLen(total_key);
res_.AppendStringRaw(raw);
}
void SetnxCmd::DoInitial() {
if (!CheckArg(argv_.size())) {
res_.SetRes(CmdRes::kWrongNum, kCmdNameSetnx);
return;
}
key_ = argv_[1];
value_ = argv_[2];
}
void SetnxCmd::Do() {
success_ = 0;
s_ = db_->storage()->Setnx(key_, value_, &success_);
if (s_.ok()) {
res_.AppendInteger(success_);
AddSlotKey("k", key_, db_);
} else {
res_.SetRes(CmdRes::kErrOther, s_.ToString());
}
}
std::string SetnxCmd::ToRedisProtocol() {
std::string content;
content.reserve(RAW_ARGS_LEN);
RedisAppendLen(content, 3, "*");
// don't check variable 'success_', because if 'success_' was false, an empty binlog will be saved into file.
// to setnx cmd
std::string set_cmd("setnx");
RedisAppendLenUint64(content, set_cmd.size(), "$");
RedisAppendContent(content, set_cmd);
// key
RedisAppendLenUint64(content, key_.size(), "$");
RedisAppendContent(content, key_);
// value
RedisAppendLenUint64(content, value_.size(), "$");
RedisAppendContent(content, value_);
return content;
}
void SetexCmd::DoInitial() {
if (!CheckArg(argv_.size())) {
res_.SetRes(CmdRes::kWrongNum, kCmdNameSetex);
return;
}
key_ = argv_[1];
if (pstd::string2int(argv_[2].data(), argv_[2].size(), &sec_) == 0) {
res_.SetRes(CmdRes::kInvalidInt);
return;
}
value_ = argv_[3];
}
void SetexCmd::Do() {
s_ = db_->storage()->Setex(key_, value_, sec_);
if (s_.ok()) {
res_.SetRes(CmdRes::kOk);
AddSlotKey("k", key_, db_);
} else {
res_.SetRes(CmdRes::kErrOther, s_.ToString());
}
}
void SetexCmd::DoThroughDB() {
Do();
}
void SetexCmd::DoUpdateCache() {
if (s_.ok()) {
std::string CachePrefixKeyK = PCacheKeyPrefixK + key_;
db_->cache()->Setxx(CachePrefixKeyK, value_, sec_);
}
}
std::string SetexCmd::ToRedisProtocol() {
std::string content;
content.reserve(RAW_ARGS_LEN);
RedisAppendLen(content, 4, "*");
// to pksetexat cmd
std::string pksetexat_cmd("pksetexat");
RedisAppendLenUint64(content, pksetexat_cmd.size(), "$");
RedisAppendContent(content, pksetexat_cmd);
// key
RedisAppendLenUint64(content, key_.size(), "$");
RedisAppendContent(content, key_);
// time_stamp
char buf[100];
auto time_stamp = time(nullptr) + sec_;
pstd::ll2string(buf, 100, time_stamp);
std::string at(buf);
RedisAppendLenUint64(content, at.size(), "$");
RedisAppendContent(content, at);
// value
RedisAppendLenUint64(content, value_.size(), "$");
RedisAppendContent(content, value_);
return content;
}
void PsetexCmd::DoInitial() {
if (!CheckArg(argv_.size())) {
res_.SetRes(CmdRes::kWrongNum, kCmdNamePsetex);
return;
}
key_ = argv_[1];
if (pstd::string2int(argv_[2].data(), argv_[2].size(), &usec_) == 0) {
res_.SetRes(CmdRes::kInvalidInt);
return;
}
value_ = argv_[3];
}
void PsetexCmd::Do() {
s_ = db_->storage()->Setex(key_, value_, usec_ / 1000);
if (s_.ok()) {
res_.SetRes(CmdRes::kOk);
} else {
res_.SetRes(CmdRes::kErrOther, s_.ToString());
}
}
void PsetexCmd::DoThroughDB() {
Do();
}
void PsetexCmd::DoUpdateCache() {
if (s_.ok()) {
std::string CachePrefixKeyK = PCacheKeyPrefixK + key_;
db_->cache()->Setxx(CachePrefixKeyK, value_, usec_ / 1000);
}
}
std::string PsetexCmd::ToRedisProtocol() {
std::string content;
content.reserve(RAW_ARGS_LEN);
RedisAppendLen(content, 4, "*");
// to pksetexat cmd
std::string pksetexat_cmd("pksetexat");
RedisAppendLenUint64(content, pksetexat_cmd.size(), "$");
RedisAppendContent(content, pksetexat_cmd);
// key
RedisAppendLenUint64(content, key_.size(), "$");
RedisAppendContent(content, key_);
// time_stamp
char buf[100];
auto time_stamp = time(nullptr) + usec_ / 1000;
pstd::ll2string(buf, 100, time_stamp);
std::string at(buf);
RedisAppendLenUint64(content, at.size(), "$");
RedisAppendContent(content, at);
// value
RedisAppendLenUint64(content, value_.size(), "$");
RedisAppendContent(content, value_);
return content;
}
void DelvxCmd::DoInitial() {
if (!CheckArg(argv_.size())) {
res_.SetRes(CmdRes::kWrongNum, kCmdNameDelvx);
return;
}
key_ = argv_[1];
value_ = argv_[2];
}
void DelvxCmd::Do() {
rocksdb::Status s = db_->storage()->Delvx(key_, value_, &success_);
if (s.ok() || s.IsNotFound()) {
res_.AppendInteger(success_);
} else {
res_.SetRes(CmdRes::kErrOther, s.ToString());
}
}
void MsetCmd::DoInitial() {
if (!CheckArg(argv_.size())) {
res_.SetRes(CmdRes::kWrongNum, kCmdNameMset);
return;
}
size_t argc = argv_.size();
if (argc % 2 == 0) {
res_.SetRes(CmdRes::kWrongNum, kCmdNameMset);
return;
}
kvs_.clear();
for (size_t index = 1; index != argc; index += 2) {
kvs_.push_back({argv_[index], argv_[index + 1]});
}
}
void MsetCmd::Do() {
s_ = db_->storage()->MSet(kvs_);
if (s_.ok()) {
res_.SetRes(CmdRes::kOk);
std::vector<storage::KeyValue>::const_iterator it;
for (it = kvs_.begin(); it != kvs_.end(); it++) {
AddSlotKey("k", it->key, db_);
}
} else {
res_.SetRes(CmdRes::kErrOther, s_.ToString());
}
}
void MsetCmd::DoThroughDB() {
Do();
}
void MsetCmd::DoUpdateCache() {
if (s_.ok()) {
std::string CachePrefixKeyK;
for (auto key : kvs_) {
CachePrefixKeyK = PCacheKeyPrefixK + key.key;
db_->cache()->SetxxWithoutTTL(CachePrefixKeyK, key.value);
}
}
}
void MsetCmd::Split(const HintKeys& hint_keys) {
std::vector<storage::KeyValue> kvs;
const std::vector<std::string>& keys = hint_keys.keys;
const std::vector<int>& hints = hint_keys.hints;
if (keys.size() != hints.size()) {
res_.SetRes(CmdRes::kErrOther, "SplitError hint_keys size not match");
}
for (size_t i = 0; i < keys.size(); i++) {
if (kvs_[hints[i]].key == keys[i]) {
kvs.push_back(kvs_[hints[i]]);
} else {
res_.SetRes(CmdRes::kErrOther, "SplitError hint key: " + keys[i]);
return;
}
}
storage::Status s = db_->storage()->MSet(kvs);
if (s.ok()) {
res_.SetRes(CmdRes::kOk);
} else {
res_.SetRes(CmdRes::kErrOther, s.ToString());
return;
}
}
void MsetCmd::Merge() {}
void MsetCmd::DoBinlog() {
PikaCmdArgsType set_argv;
set_argv.resize(3);
//used "set" instead of "SET" to distinguish the binlog of Set
set_argv[0] = "set";
set_cmd_->SetConn(GetConn());
set_cmd_->SetResp(resp_.lock());
for(auto& kv: kvs_){
set_argv[1] = kv.key;
set_argv[2] = kv.value;
set_cmd_->Initial(set_argv, db_name_);
set_cmd_->DoBinlog();
}
}
void MsetnxCmd::DoInitial() {
if (!CheckArg(argv_.size())) {
res_.SetRes(CmdRes::kWrongNum, kCmdNameMsetnx);
return;
}
size_t argc = argv_.size();
if (argc % 2 == 0) {
res_.SetRes(CmdRes::kWrongNum, kCmdNameMsetnx);
return;
}
kvs_.clear();
for (size_t index = 1; index != argc; index += 2) {
kvs_.push_back({argv_[index], argv_[index + 1]});
}
}
void MsetnxCmd::Do() {
success_ = 0;
rocksdb::Status s = db_->storage()->MSetnx(kvs_, &success_);
if (s.ok()) {
res_.AppendInteger(success_);
std::vector<storage::KeyValue>::const_iterator it;
for (it = kvs_.begin(); it != kvs_.end(); it++) {
AddSlotKey("k", it->key, db_);
}
} else {
res_.SetRes(CmdRes::kErrOther, s.ToString());
}
}
void MsetnxCmd::DoBinlog() {
if (!success_) {
//some keys already exist, set operations aborted, no need of binlog
return;
}
PikaCmdArgsType set_argv;
set_argv.resize(3);
//used "set" instead of "SET" to distinguish the binlog of SetCmd
set_argv[0] = "set";
set_cmd_->SetConn(GetConn());
set_cmd_->SetResp(resp_.lock());
for (auto& kv: kvs_) {
set_argv[1] = kv.key;
set_argv[2] = kv.value;
set_cmd_->Initial(set_argv, db_name_);
set_cmd_->DoBinlog();
}
}
void GetrangeCmd::DoInitial() {
if (!CheckArg(argv_.size())) {
res_.SetRes(CmdRes::kWrongNum, kCmdNameGetrange);
return;
}
key_ = argv_[1];
if (pstd::string2int(argv_[2].data(), argv_[2].size(), &start_) == 0) {
res_.SetRes(CmdRes::kInvalidInt);
return;
}
if (pstd::string2int(argv_[3].data(), argv_[3].size(), &end_) == 0) {
res_.SetRes(CmdRes::kInvalidInt);
return;
}
}
void GetrangeCmd::Do() {
std::string substr;
s_= db_->storage()->Getrange(key_, start_, end_, &substr);
if (s_.ok() || s_.IsNotFound()) {
res_.AppendStringLenUint64(substr.size());
res_.AppendContent(substr);
} else {
res_.SetRes(CmdRes::kErrOther, s_.ToString());
}
}
void GetrangeCmd::ReadCache() {
std::string substr;
std::string CachePrefixKeyK = PCacheKeyPrefixK + key_;
auto s = db_->cache()->GetRange(CachePrefixKeyK, start_, end_, &substr);
if (s.ok()) {
res_.AppendStringLen(substr.size());
res_.AppendContent(substr);
} else {
res_.SetRes(CmdRes::kCacheMiss);
}
}
void GetrangeCmd::DoThroughDB() {
res_.clear();
std::string substr;
s_ = db_->storage()->GetrangeWithValue(key_, start_, end_, &substr, &value_, &sec_);
if (s_.ok()) {
res_.AppendStringLen(substr.size());
res_.AppendContent(substr);
} else if (s_.IsNotFound()) {