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db.cc
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/*
* Pedis is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* You may obtain a copy of the License at
*
* http://www.gnu.org/licenses
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
* Copyright (c) 2016-2026, Peng Jian, pstack@163.com. All rights reserved.
*
*/
#include "db.hh"
#include <random>
#include <chrono>
#include <algorithm>
#include "util/log.hh"
#include "core/metrics.hh"
#include "core/sleep.hh"
#include "structures/hll.hh"
#include "types.hh"
//using logger = seastar::logger;
//static logger db_log ("db");
namespace redis {
class rand_generater final
{
friend class database;
public:
inline static size_t rand_less_than(const size_t size) {
static thread_local rand_generater _rand;
return _rand.rand() % size;
}
private:
rand_generater()
: _re(std::chrono::system_clock::now().time_since_epoch().count())
, _dist(0, std::numeric_limits<size_t>::max())
{
}
~rand_generater()
{
}
inline size_t rand()
{
return _dist(_re);
}
std::default_random_engine _re;
std::uniform_int_distribution<size_t> _dist;
};
distributed<database> _databases;
database::database()
: _stat()
, _sys_cf(make_lw_shared<store::column_family>("SYSTEM", true))
, _data_cf(make_lw_shared<store::column_family>("DATA", false))
, _flush_cache(0)
, _shutdown(false)
{
using namespace std::chrono;
_cache.set_expired_entry_releaser([this] (cache_entry& e) {
with_allocator(allocator(), [this, &e] {
auto type = e.type();
if (_cache.erase(e)) {
switch (type) {
case data_type::numeric:
case data_type::int64:
--_stat._total_counter_entries;
break;
case data_type::bytes:
--_stat._total_string_entries;
break;
case data_type::list:
--_stat._total_list_entries;
break;
case data_type::bitmap:
--_stat._total_bitmap_entries;
break;
case data_type::set:
--_stat._total_set_entries;
break;
case data_type::sset:
--_stat._total_zset_entries;
break;
case data_type::hll:
--_stat._total_hll_entries;
break;
default:
break;
}
}
});
});
_commit_log = store::make_commit_log();
setup_metrics();
}
future<> database::initialize()
{
assert(_sys_cf);
assert(_data_cf);
repeat([this] {
return _flush_cache.wait().then([this] {
return _cache.flush_dirty_entry(*_data_cf).then([this] {
return _shutdown ? stop_iteration::yes : stop_iteration::no;
});
});
});
_flush_timer.set_callback(std::bind(&database::on_timer, this));
if (!_shutdown) {
_flush_timer.arm(std::chrono::milliseconds(8000));
}
return make_ready_future<>();
}
void database::on_timer()
{
if (_cache.should_flush_dirty_entry()) {
_flush_cache.signal();
}
if (!_shutdown) {
_flush_timer.arm(std::chrono::milliseconds(8000));
}
}
database::~database()
{
with_allocator(allocator(), [this] {
_cache.flush_all();
});
}
size_t database::sum_expiring_entries()
{
return _cache.expiring_size();
}
void database::setup_metrics()
{
namespace sm = seastar::metrics;
_metrics.add_group("db", {
sm::make_counter("read", [this] { return _stat._read; }, sm::description("Total number of read operations.")),
sm::make_counter("hit", [this] { return _stat._hit; }, sm::description("Total number of the read hit.")),
sm::make_counter("total_counter_entries", [this] { return _stat._total_counter_entries; }, sm::description("Total of counter entries.")),
sm::make_counter("total_string_entries", [this] { return _stat._total_string_entries; }, sm::description("Total of string entries.")),
sm::make_counter("total_dict_entries", [this] { return _stat._total_dict_entries; }, sm::description("Total of dict entries.")),
sm::make_counter("total_list_entries", [this] { return _stat._total_list_entries; }, sm::description("Total of list entries.")),
sm::make_counter("total_set_entries", [this] { return _stat._total_set_entries; }, sm::description("Total of set entries.")),
sm::make_counter("total_sorted_set_entries", [this] { return _stat._total_zset_entries; }, sm::description("Total of sorted set entries.")),
sm::make_counter("total_hll_entries", [this] { return _stat._total_hll_entries; }, sm::description("Total of hyperloglog entries.")),
sm::make_counter("total_expiring_entries", [this] { return sum_expiring_entries(); }, sm::description("Total of expiring entries.")),
});
_metrics.add_group("op", {
sm::make_counter("echo", [this] { return _stat._echo; }, sm::description("ECHO")),
sm::make_counter("set", [this] { return _stat._set; }, sm::description("SET")),
sm::make_counter("get", [this] { return _stat._get; }, sm::description("GET")),
sm::make_counter("del", [this] { return _stat._del; }, sm::description("DEL")),
sm::make_counter("mset", [this] { return _stat._mset; }, sm::description("MSET")),
sm::make_counter("mget", [this] { return _stat._mget; }, sm::description("MGET")),
sm::make_counter("strlen", [this] { return _stat._strlen; }, sm::description("STRLEN")),
sm::make_counter("exists", [this] { return _stat._exists; }, sm::description("EXISTS")),
sm::make_counter("append", [this] { return _stat._append; }, sm::description("APPEND")),
sm::make_counter("lpush", [this] { return _stat._lpush; }, sm::description("LPUSH")),
sm::make_counter("lpushx", [this] { return _stat._lpushx; }, sm::description("LPUSHX")),
sm::make_counter("lpop", [this] { return _stat._lpop; }, sm::description("LPOP")),
sm::make_counter("rpop", [this] { return _stat._rpop; }, sm::description("RPOP")),
sm::make_counter("lindex", [this] { return _stat._lindex; }, sm::description("LINDEX")),
sm::make_counter("llen", [this] { return _stat._llen; }, sm::description("LLEN")),
sm::make_counter("linsert", [this] { return _stat._linsert; }, sm::description("LINSERT")),
sm::make_counter("lrange", [this] { return _stat._lrange; }, sm::description("LRANGE")),
sm::make_counter("lset", [this] { return _stat._lset; }, sm::description("LSET")),
sm::make_counter("ltrim", [this] { return _stat._ltrim; }, sm::description("LTRIM")),
sm::make_counter("lrem", [this] { return _stat._lrem; }, sm::description("LREM")),
sm::make_counter("counter", [this] { return _stat._counter; }, sm::description("DECR")),
sm::make_counter("hdel", [this] { return _stat._hdel; }, sm::description("HDEL")),
sm::make_counter("hexists", [this] { return _stat._hexists; }, sm::description("HEXISTS")),
sm::make_counter("hset", [this] { return _stat._hset; }, sm::description("HSET")),
sm::make_counter("hmset", [this] { return _stat._hmset; }, sm::description("HMSET")),
sm::make_counter("hincrby", [this] { return _stat._hincrby; }, sm::description("HINCR")),
sm::make_counter("hincrbyfloat", [this] { return _stat._hincrbyfloat; }, sm::description("HINCRBYFLOAT")),
sm::make_counter("hlen", [this] { return _stat._hlen; }, sm::description("HLEN")),
sm::make_counter("hstrlen", [this] { return _stat._hstrlen; }, sm::description("HSTRLEN")),
sm::make_counter("hgetall", [this] { return _stat._hgetall; }, sm::description("HGETALL")),
sm::make_counter("hgetallkeys", [this] { return _stat._hgetall_keys; }, sm::description("HGETALLKEYS")),
sm::make_counter("hgetallvalues", [this] { return _stat._hgetall_values; }, sm::description("HGETALLVALUES")),
sm::make_counter("hmget", [this] { return _stat._hmget; }, sm::description("HMGET")),
sm::make_counter("smembers", [this] { return _stat._smembers; }, sm::description("SMEMBERS")),
sm::make_counter("sadd", [this] { return _stat._sadd; }, sm::description("SADD")),
sm::make_counter("scard", [this] { return _stat._scard; }, sm::description("SCARD")),
sm::make_counter("sismember", [this] { return _stat._sismember; }, sm::description("SISMEMBER")),
sm::make_counter("srem", [this] { return _stat._srem; }, sm::description("SREM")),
sm::make_counter("sdiff", [this] { return _stat._sdiff; }, sm::description("SDIFF")),
sm::make_counter("sdiffstore", [this] { return _stat._sdiff_store; }, sm::description("SDIFFSTORE")),
sm::make_counter("sinter", [this] { return _stat._sinter; }, sm::description("SINTER")),
sm::make_counter("sinterstore", [this] { return _stat._sinter_store; }, sm::description("SINTERSTORE")),
sm::make_counter("sunion", [this] { return _stat._sunion; }, sm::description("SUNION")),
sm::make_counter("sunionstore", [this] { return _stat._sunion_store; }, sm::description("SUNIONSTORE")),
sm::make_counter("smove", [this] { return _stat._smove; }, sm::description("SMOVE")),
sm::make_counter("srandmember", [this] { return _stat._srandmember; }, sm::description("SRANDMEMBER")),
sm::make_counter("spop", [this] { return _stat._spop; }, sm::description("SPOP")),
sm::make_counter("type", [this] { return _stat._type; }, sm::description("TYPE")),
sm::make_counter("expire", [this] { return _stat._expire; }, sm::description("EXPIRE")),
sm::make_counter("pexpire", [this] { return _stat._pexpire; }, sm::description("PEXPIRE")),
sm::make_counter("ttl", [this] { return _stat._ttl; }, sm::description("TTL")),
sm::make_counter("pttl", [this] { return _stat._pttl; }, sm::description("PTTL")),
sm::make_counter("persist", [this] { return _stat._persist; }, sm::description("PERSIST")),
sm::make_counter("zadd", [this] { return _stat._zadd; }, sm::description("ZADD")),
sm::make_counter("zcard", [this] { return _stat._zcard; }, sm::description("ZCARD")),
sm::make_counter("zrange", [this] { return _stat._zrange; }, sm::description("ZRANGE")),
sm::make_counter("zrangebyscore", [this] { return _stat._zrangebyscore; }, sm::description("ZRANGEBYSCORE")),
sm::make_counter("zcount", [this] { return _stat._zcount; }, sm::description("ZCOUNT")),
sm::make_counter("zincrby", [this] { return _stat._zincrby; }, sm::description("ZINCRBY")),
sm::make_counter("zrank", [this] { return _stat._zrank; }, sm::description("ZRANK")),
sm::make_counter("zrem", [this] { return _stat._zrem; }, sm::description("ZREM")),
sm::make_counter("zscore", [this] { return _stat._zscore; }, sm::description("ZSCORE")),
sm::make_counter("zremrangebyscore", [this] { return _stat._zremrangebyscore; }, sm::description("ZREMRANGEBYSCORE")),
sm::make_counter("zremrangebyrank", [this] { return _stat._zremrangebyrank; }, sm::description("ZREMRANGEBYRANK")),
sm::make_counter("zdiffstore", [this] { return _stat._zdiffstore; }, sm::description("ZDIFFSTORE")),
sm::make_counter("zunionstore", [this] { return _stat._zunionstore; }, sm::description("ZUNIONSTORE")),
sm::make_counter("zinterstore", [this] { return _stat._zinterstore; }, sm::description("ZINTERSTORE")),
sm::make_counter("zdiff", [this] { return _stat._zdiff; }, sm::description("ZDIFF")),
sm::make_counter("zunion", [this] { return _stat._zunion; }, sm::description("ZUNION")),
sm::make_counter("zinter", [this] { return _stat._zinter; }, sm::description("ZINTER")),
sm::make_counter("zrangebylex", [this] { return _stat._zrangebylex; }, sm::description("ZRANGEBYLEX")),
sm::make_counter("zlexcount", [this] { return _stat._zlexcount; }, sm::description("ZLEXCOUNT")),
sm::make_counter("select", [this] { return _stat._select; }, sm::description("SELECT")),
sm::make_counter("geoadd", [this] { return _stat._geoadd; }, sm::description("GEOADD")),
sm::make_counter("geodist", [this] { return _stat._geodist; }, sm::description("GEODIST")),
sm::make_counter("geohash", [this] { return _stat._geohash; }, sm::description("GEOHASH")),
sm::make_counter("geopos", [this] { return _stat._geopos; }, sm::description("GEOPOS")),
sm::make_counter("georadius", [this] { return _stat._georadius; }, sm::description("GEORADIUS")),
sm::make_counter("setbit", [this] { return _stat._setbit; }, sm::description("SETBIT")),
sm::make_counter("getbit", [this] { return _stat._getbit; }, sm::description("GETBIT")),
sm::make_counter("bitcount", [this] { return _stat._bitcount; }, sm::description("BITCOUNT")),
sm::make_counter("bitop", [this] { return _stat._bitop; }, sm::description("BITOP")),
sm::make_counter("bitpos", [this] { return _stat._bitpos; }, sm::description("BITPOS")),
sm::make_counter("bitfield", [this] { return _stat._bitfield; }, sm::description("BITFIELD")),
sm::make_counter("pfadd", [this] { return _stat._pfadd; }, sm::description("PFADD")),
sm::make_counter("pfcount", [this] { return _stat._pfcount; }, sm::description("PFCOUNT")),
sm::make_counter("pfmerge", [this] { return _stat._pfmerge; }, sm::description("PFMERGE")),
});
}
bool database::set_direct(redis_key rk, bytes val, long expired, uint32_t flag)
{
++_stat._set;
return with_allocator(allocator(), [this, rk = std::move(rk), val = std::move(val), expired, flag] {
auto entry = current_allocator().construct<cache_entry>(rk.key(), rk.hash(), val);
bool result = true;
if (_cache.insert_if(entry, expired, flag & FLAG_SET_NX, flag & FLAG_SET_XX)) {
++_stat._total_string_entries;
}
else {
result = false;
current_allocator().destroy<cache_entry>(entry);
}
return result;
});
}
future<scattered_message_ptr> database::set(redis_key rk, bytes val, long expired, uint32_t flag)
{
// First, append the operation commitlog.
// Second, update the data-structures in the cache, reply message to client.
// Third, flush dirty data in the cache to memtable periodically.
// Then, flush memtable to disk when some conditions are statisfied.
//
++_stat._set;
auto m = make_bytes_mutation(rk.key(), val, expired, flag);
return _commit_log->append(m).then([this, rk = std::move(rk), val = std::move(val), expired, flag] {
return with_allocator(allocator(), [this, rk = std::move(rk), val = std::move(val), expired, flag] {
auto entry = current_allocator().construct<cache_entry>(rk.key(), rk.hash(), val);
bool result = true;
if (_cache.insert_if(entry, expired, flag & FLAG_SET_NX, flag & FLAG_SET_XX)) {
++_stat._total_string_entries;
}
else {
result = false;
current_allocator().destroy<cache_entry>(entry);
}
return reply_builder::build(result ? msg_ok : msg_nil);
});
});
}
future<bool> database::del_direct(redis_key rk)
{
++_stat._del;
auto m = make_deleted_mutation(rk.key());
return _commit_log->append(m).then([this, rk = std::move(rk)] {
return _cache.run_with_entry(rk, [this] (cache_entry* e) {
if (!e) return false;
if (e->type_of_bytes()) {
--_stat._total_string_entries;
}
else if (e->type_of_set()) {
--_stat._total_set_entries;
}
else if (e->type_of_list()) {
--_stat._total_list_entries;
}
else if (e->type_of_map()) {
--_stat._total_dict_entries;
}
else if (e->type_of_sset()) {
--_stat._total_zset_entries;
}
else if (e->type_of_hll()) {
--_stat._total_hll_entries;
}
else {
--_stat._total_counter_entries;
}
return with_allocator(allocator(), [this, e] {
auto result = _cache.erase(*e);
return result;
});
});
});
}
future<scattered_message_ptr> database::del(redis_key rk)
{
++_stat._del;
auto m = make_deleted_mutation(rk.key());
return _commit_log->append(m).then([this, rk = std::move(rk)] {
return _cache.run_with_entry(rk, [this] (cache_entry* e) {
if (!e) return reply_builder::build(msg_zero);
if (e->type_of_bytes()) {
--_stat._total_string_entries;
}
else if (e->type_of_set()) {
--_stat._total_set_entries;
}
else if (e->type_of_list()) {
--_stat._total_list_entries;
}
else if (e->type_of_map()) {
--_stat._total_dict_entries;
}
else if (e->type_of_sset()) {
--_stat._total_zset_entries;
}
else if (e->type_of_hll()) {
--_stat._total_hll_entries;
}
else {
--_stat._total_counter_entries;
}
return with_allocator(allocator(), [this, e] {
auto result = _cache.erase(*e);
return reply_builder::build(result ? msg_one : msg_zero);
});
});
});
}
bool database::exists_direct(redis_key rk)
{
++_stat._exists;
return _cache.exists(rk);
}
future<scattered_message_ptr> database::exists(redis_key rk)
{
++_stat._exists;
auto result = _cache.exists(rk);
return reply_builder::build(result ? msg_one : msg_zero);
}
future<scattered_message_ptr> database::counter_by(redis_key rk, int64_t step, bool incr)
{
++_stat._counter;
return with_allocator(allocator(), [this, rk = std::move(rk), step, incr] {
auto e = _cache.find(rk);
if (!e) {
// not exists
auto entry = current_allocator().construct<cache_entry>(rk.key(), rk.hash(), int64_t{step});
_cache.replace(entry);
++_stat._total_counter_entries;
return reply_builder::build<false, true>(entry);
}
if (!e->type_of_integer()) {
return reply_builder::build(msg_type_err);
}
if (incr) {
e->value_integer_incr(step);
}
else {
e->value_integer_incr(-step);
}
return reply_builder::build<false, true>(e);
});
}
future<scattered_message_ptr> database::append(redis_key rk, bytes val)
{
++_stat._append;
return with_allocator(allocator(), [this, rk = std::move(rk), val = std::move(val)] {
auto e = _cache.find(rk);
if (!e) {
// not exists
auto entry = current_allocator().construct<cache_entry>(rk.key(), rk.hash(), val);
_cache.replace(entry);
++_stat._total_string_entries;
return reply_builder::build(val.size());
}
if (!e->type_of_bytes()) {
return reply_builder::build(msg_type_err);
}
size_t new_size = e->value_bytes_size() + val.size();
auto data = std::unique_ptr<bytes_view::value_type[]>(new bytes_view::value_type[new_size]);
std::copy_n(e->value_bytes_data(), e->value_bytes_size(), data.get());
std::copy_n(val.data(), val.size(), data.get() + e->value_bytes_size());
auto new_value = current_allocator().construct<managed_bytes>(data.get(), new_size);
auto& old_value = e->value_bytes();
current_allocator().destroy<managed_bytes>(&old_value);
e->value_bytes() = std::move(*new_value);
return reply_builder::build(new_size);
});
}
future<scattered_message_ptr> database::get(redis_key rk)
{
++_stat._read;
++_stat._get;
return _cache.run_with_entry(rk, [this] (const cache_entry* e) {
if (e && e->type_of_bytes() == false) {
return reply_builder::build(msg_type_err);
}
else {
if (e != nullptr) ++_stat._hit;
return reply_builder::build<false, true>(e);
}
});
}
future<scattered_message_ptr> database::strlen(redis_key rk)
{
++_stat._strlen;
return _cache.run_with_entry(rk, [] (const cache_entry* e) {
if (e) {
if (e->type_of_bytes()) {
return reply_builder::build(e->value_bytes_size());
}
return reply_builder::build(msg_type_err);
}
return reply_builder::build(msg_zero);
});
}
future<scattered_message_ptr> database::type(redis_key rk)
{
++_stat._type;
auto e = _cache.find(rk);
if (!e) {
return reply_builder::build(msg_type_none);
}
auto type = e->type_name();
return reply_builder::build(type);
}
future<scattered_message_ptr> database::expire(redis_key rk, long expired)
{
++_stat._expire;
auto result = _cache.expire(rk, expired);
return reply_builder::build(result ? msg_one : msg_zero);
}
future<scattered_message_ptr> database::persist(redis_key rk)
{
++_stat._persist;
auto result = _cache.never_expired(rk);
return reply_builder::build(result ? msg_one : msg_zero);
}
future<scattered_message_ptr> database::push(redis_key rk, bytes val, bool force, bool left)
{
left ? ++_stat._lpush : ++_stat._rpush;
return with_allocator(allocator(), [this, rk = std::move(rk), val = std::move(val), force, left] () {
auto e = _cache.find(rk);
if (!e) {
if (!force) {
return reply_builder::build(msg_err);
}
// create new list object
auto entry = current_allocator().construct<cache_entry>(rk.key(), rk.hash(), cache_entry::list_initializer());
_cache.insert(entry);
++_stat._total_list_entries;
e = entry;
}
if (e->type_of_list() == false) {
return reply_builder::build(msg_type_err);
}
auto& list = e->value_list();
left ? list.insert_head(val) : list.insert_tail(val);
return reply_builder::build(list.size());
});
}
future<scattered_message_ptr> database::push_multi(redis_key rk, std::vector<bytes> values, bool force, bool left)
{
left ? ++_stat._lpush : ++_stat._rpush;
return with_allocator(allocator(), [this, rk = std::move(rk), values = std::move(values), force, left] () {
auto e = _cache.find(rk);
if (!e) {
if (!force) {
return reply_builder::build(msg_err);
}
// create new list object
auto entry = current_allocator().construct<cache_entry>(rk.key(), rk.hash(), cache_entry::list_initializer());
_cache.insert(entry);
++_stat._total_list_entries;
e = entry;
}
if (e->type_of_list() == false) {
return reply_builder::build(msg_type_err);
}
auto& list = e->value_list();
for (auto& val : values) {
left ? list.insert_head(val) : list.insert_tail(val);
}
return reply_builder::build(list.size());
});
}
future<scattered_message_ptr> database::pop(redis_key rk, bool left)
{
++_stat._read;
left ? ++_stat._lpop : ++_stat._rpop;
return with_allocator(allocator(), [this, rk = std::move(rk), left] () {
auto e = _cache.find(rk);
if (!e) {
return reply_builder::build(msg_nil);
}
if (e->type_of_list() == false) {
return reply_builder::build(msg_type_err);
}
auto& list = e->value_list();
assert(!list.empty());
auto reply = reply_builder::build(left ? list.front() : list.back());
left ? list.pop_front() : list.pop_back();
if (list.empty()) {
--_stat._total_list_entries;
_cache.erase(rk);
}
++_stat._hit;
return reply;
});
}
future<scattered_message_ptr> database::llen(redis_key rk)
{
++_stat._llen;
auto e = _cache.find(rk);
if (!e) {
return reply_builder::build(msg_zero);
}
if (e->type_of_list() == false) {
return reply_builder::build(msg_type_err);
}
auto& list = e->value_list();
return reply_builder::build(list.size());
}
future<scattered_message_ptr> database::lindex(redis_key rk, long idx)
{
++_stat._read;
++_stat._lindex;
return _cache.run_with_entry(rk, [this, rk = std::move(rk), idx] (const cache_entry* e) {
if (!e) {
return reply_builder::build(msg_nil);
}
if (e->type_of_list() == false) {
return reply_builder::build(msg_type_err);
}
auto& list = e->value_list();
auto index = alignment_index_base_on(list.size(), idx);
if (list.index_out_of_range(index)) {
return reply_builder::build(msg_nil);
}
auto& result = list.at(static_cast<size_t>(index));
++_stat._hit;
return reply_builder::build(result);
});
}
future<scattered_message_ptr> database::lrange(redis_key rk, long start, long end)
{
++_stat._read;
++_stat._lrange;
auto e = _cache.find(rk);
if (!e) {
return reply_builder::build(msg_err);
}
if (e->type_of_list() == false) {
return reply_builder::build(msg_type_err);
}
auto& list = e->value_list();
start = database::alignment_index_base_on(list.size(), start);
end = database::alignment_index_base_on(list.size(), end);
if (start < 0) start = 0;
if (end >= static_cast<long>(list.size())) end = static_cast<size_t>(list.size()) - 1;
std::vector<const managed_bytes*> data;
if (start < end) {
for (auto i = start; i < end; ++i) {
const auto& b = list.at(static_cast<size_t>(i));
data.push_back(&b);
}
}
if (!data.empty()) ++_stat._hit;
return reply_builder::build(data);
}
future<scattered_message_ptr> database::lrem(redis_key rk, long count, bytes val)
{
++_stat._lrem;
return with_allocator(allocator(), [this, rk = std::move(rk), count, val = std::move(val)] {
auto e = _cache.find(rk);
if (!e) {
return reply_builder::build(msg_err);
}
if (e->type_of_list() == false) {
return reply_builder::build(msg_type_err);
}
auto& list = e->value_list();
size_t removed = 0;
if (count == 0) removed = list.trem<true, true>(val, count);
else if (count > 0) removed = list.trem<false, true>(val, count);
else removed = list.trem<false, false>(val, count);
if (list.empty()) {
--_stat._total_list_entries;
_cache.erase(rk);
}
return reply_builder::build(removed);
});
}
future<scattered_message_ptr> database::linsert(redis_key rk, bytes pivot, bytes val, bool after)
{
++_stat._linsert;
return with_allocator(allocator(), [this, rk = std::move(rk), pivot = std::move(pivot), val = std::move(val), after] {
auto e = _cache.find(rk);
if (!e) {
return reply_builder::build(msg_zero);
}
if (e->type_of_list() == false) {
return reply_builder::build(msg_type_err);
}
auto& list = e->value_list();
auto index = list.index_of(pivot);
if (list.index_out_of_range(index)) {
return reply_builder::build(msg_zero);
}
if (after) {
if (index == list.size()) list.insert_tail(val);
else list.insert_at(++index, val);
}
else {
if (index == 0) list.insert_head(val);
else list.insert_at(--index, val);
}
return reply_builder::build(msg_one);
});
}
future<scattered_message_ptr> database::lset(redis_key rk, long idx, bytes val)
{
++_stat._lset;
return with_allocator(allocator(), [this, rk = std::move(rk), idx, val = std::move(val)] {
auto e = _cache.find(rk);
if (!e) {
return reply_builder::build(msg_nokey_err);
}
if (e->type_of_list() == false) {
return reply_builder::build(msg_type_err);
}
auto& list = e->value_list();
auto nidx = database::alignment_index_base_on(list.size(), idx);
if (list.index_out_of_range(nidx)) {
return reply_builder::build(msg_out_of_range_err);
}
auto& old = list.at(static_cast<size_t>(nidx));
current_allocator().destroy<managed_bytes>(&old);
auto entry = current_allocator().construct<managed_bytes>(bytes_view{val});
list.at(idx) = std::move(*entry);
return reply_builder::build(msg_ok);
});
}
future<scattered_message_ptr> database::ltrim(redis_key rk, long start, long end)
{
++_stat._ltrim;
return with_allocator(allocator(), [this, rk = std::move(rk), start, end] {
auto e = _cache.find(rk);
if (!e) {
return reply_builder::build(msg_ok);
}
if (e->type_of_list() == false) {
return reply_builder::build(msg_type_err);
}
auto& list = e->value_list();
auto nstart = database::alignment_index_base_on(list.size(), start);
if (nstart < 0) nstart = 0;
auto nend = database::alignment_index_base_on(list.size(), end);
if (nstart > nend || nstart > static_cast<long>(list.size()) || nend < 0) {
list.clear();
}
list.trim(static_cast<size_t>(nstart), static_cast<size_t>(nend));
if (list.empty()) {
--_stat._total_list_entries;
_cache.erase(rk);
}
return reply_builder::build(msg_ok);
});
}
future<scattered_message_ptr> database::hset(redis_key rk, bytes key, bytes val)
{
++_stat._hset;
return with_allocator(allocator(), [this, rk = std::move(rk), key = std::move(key), val = std::move(val)] {
auto e = _cache.find(rk);
if (!e) {
// the rk was not exists, then create it.
auto entry = current_allocator().construct<cache_entry>(rk.key(), rk.hash(), cache_entry::dict_initializer());
_cache.insert(entry);
++_stat._total_dict_entries;
e = entry;
}
if (e->type_of_map() == false) {
return reply_builder::build(msg_type_err);
}
auto& map = e->value_map();
bool exists = map.exists(key);
auto entry = current_allocator().construct<dict_entry>(key, val);
map.insert(entry);
return reply_builder::build(exists ? msg_zero : msg_one);
});
}
future<scattered_message_ptr> database::hincrby(redis_key rk, bytes key, int64_t delta)
{
++_stat._hincrby;
return with_allocator(allocator(), [this, rk = std::move(rk), key = std::move(key), delta] {
auto e = _cache.find(rk);
if (!e) {
// the rk was not exists, then create it.
auto entry = current_allocator().construct<cache_entry>(rk.key(), rk.hash(), cache_entry::dict_initializer());
_cache.insert(entry);
++_stat._total_dict_entries;
e = entry;
}
if (e->type_of_map() == false) {
return reply_builder::build(msg_type_err);
}
auto& map = e->value_map();
return map.run_with_entry(key, [&map, &key, delta] (dict_entry* d) {
if (!d) {
auto entry = current_allocator().construct<dict_entry>(key, delta);
map.insert(entry);
return reply_builder::build<false, true>(entry);
}
if (!d->type_of_integer()) {
return reply_builder::build(msg_not_integer_err);
}
d->value_integer_incr(delta);
return reply_builder::build<false, true>(d);
});
});
}
future<scattered_message_ptr> database::hincrbyfloat(redis_key rk, bytes key, double delta)
{
++_stat._hincrbyfloat;
return with_allocator(allocator(), [this, rk = std::move(rk), key = std::move(key), delta] {
auto e = _cache.find(rk);
if (!e) {
// the rk was not exists, then create it.
auto entry = current_allocator().construct<cache_entry>(rk.key(), rk.hash(), cache_entry::dict_initializer());
_cache.insert(entry);
++_stat._total_dict_entries;
e = entry;
}
if (e->type_of_map() == false) {
return reply_builder::build(msg_type_err);
}
auto& map = e->value_map();
return map.run_with_entry(key, [&map, &key, delta] (dict_entry* d) {
if (!d) {
auto entry = current_allocator().construct<dict_entry>(key, delta);
map.insert(entry);
return reply_builder::build<false, true>(entry);
}
if (!d->type_of_float()) {
return reply_builder::build(msg_not_float_err);
}
d->value_float_incr(delta);
return reply_builder::build<false, true>(d);
});
});
}
future<scattered_message_ptr> database::hmset(redis_key rk, std::unordered_map<bytes, bytes> kvs)
{
++_stat._hmset;
return with_allocator(allocator(), [this, rk = std::move(rk), kvs = std::move(kvs)] {
auto e = _cache.find(rk);
if (!e) {
// the rk was not exists, then create it.
auto entry = current_allocator().construct<cache_entry>(rk.key(), rk.hash(), cache_entry::dict_initializer());
_cache.insert(entry);
++_stat._total_dict_entries;
e = entry;
}
if (e->type_of_map() == false) {
return reply_builder::build(msg_type_err);
}
auto& map = e->value_map();
bool result = false;
for (auto& kv : kvs) {
auto entry = current_allocator().construct<dict_entry>(kv.first, kv.second);
result = map.insert(entry);
if (!result) break;
}
return reply_builder::build(result ? msg_ok : msg_err);
});
}
future<scattered_message_ptr> database::hget(redis_key rk, bytes key)
{
++_stat._read;
++_stat._hget;
auto e = _cache.find(rk);
if (!e) {
return reply_builder::build(msg_err);
}
if (e->type_of_map() == false) {
return reply_builder::build(msg_type_err);
}
auto& map = e->value_map();
return map.run_with_entry(key, [this] (const dict_entry* d) {
if (d) ++_stat._hit;
return reply_builder::build<false, true>(d);
});
}
future<scattered_message_ptr> database::hdel_multi(redis_key rk, std::vector<bytes> keys)
{
++_stat._hdel;
return with_allocator(allocator(), [this, rk = std::move(rk), keys = std::move(keys)] {
auto e = _cache.find(rk);
if (!e) {
return reply_builder::build(msg_zero);
}
if (e->type_of_map() == false) {
return reply_builder::build(msg_type_err);
}
auto& map = e->value_map();
size_t removed = 0;
for (auto& key : keys) {
if (map.erase(key)) {
++ removed;
}
}
if (map.empty()) {
--_stat._total_dict_entries;
_cache.erase(rk);
}
return reply_builder::build(removed);
});
}
future<scattered_message_ptr> database::hdel(redis_key rk, bytes key)
{
++_stat._hdel;
return with_allocator(allocator(), [this, rk = std::move(rk), key = std::move(key)] {
auto e = _cache.find(rk);
if (!e) {
return reply_builder::build(msg_zero);
}
if (e->type_of_map() == false) {
return reply_builder::build(msg_type_err);
}
auto& map = e->value_map();
bool exists = map.erase(key);
if (map.empty()) {
--_stat._total_dict_entries;
_cache.erase(rk);
}
return reply_builder::build(exists ? msg_ok : msg_err);
});
}
future<scattered_message_ptr> database::hexists(redis_key rk, bytes key)
{
++_stat._hexists;
return with_allocator(allocator(), [this, rk = std::move(rk), key = std::move(key)] {
auto e = _cache.find(rk);
if (!e) {
return reply_builder::build(msg_zero);
}
if (e->type_of_map() == false) {
return reply_builder::build(msg_type_err);
}
auto& map = e->value_map();
auto result = map.exists(key);
return reply_builder::build(result ? msg_one : msg_zero);
});
}
future<scattered_message_ptr> database::hstrlen(redis_key rk, bytes key)
{
++_stat._hstrlen;
auto e = _cache.find(rk);
if (!e) {
return reply_builder::build(msg_zero);
}
if (e->type_of_map() == false) {
return reply_builder::build(msg_type_err);
}
auto& map = e->value_map();
return map.run_with_entry(key, [] (const dict_entry* d) {
if (!d) {
return reply_builder::build(msg_zero);
}
return reply_builder::build(d->value_bytes_size());
});
}
future<scattered_message_ptr> database::hlen(redis_key rk)
{
++_stat._hlen;
auto e = _cache.find(rk);
if (!e) {
return reply_builder::build(msg_zero);
}
if (e->type_of_map() == false) {
return reply_builder::build(msg_type_err);
}
auto& map = e->value_map();
return reply_builder::build(map.size());
}
future<scattered_message_ptr> database::hgetall(redis_key rk)
{
return hgetall_impl<true, true>(rk);
}
future<scattered_message_ptr> database::hgetall_values(redis_key rk)
{
return hgetall_impl<false, true>(rk);
}
future<scattered_message_ptr> database::hgetall_keys(redis_key rk)
{
return hgetall_impl<true, false>(rk);
}
future<scattered_message_ptr> database::hmget(redis_key rk, std::vector<bytes> keys)
{
++_stat._read;
++_stat._hmget;
auto e = _cache.find(rk);
if (!e) {
return reply_builder::build(msg_err);
}
if (e->type_of_map() == false) {
return reply_builder::build(msg_type_err);
}
auto& map = e->value_map();
std::vector<const dict_entry*> entries;
map.fetch(keys, entries);
if (!entries.empty()) ++_stat._hit;
return reply_builder::build<false, true>(entries);
}
future<scattered_message_ptr> database::srandmember(redis_key rk, size_t count)