0737d9e84d
Scylla has advantage and amazing features. If Redis build on the top of Scylla, it has the above features automatically. It's achived great progress in cluster master managment, data persistence, failover and replication. The benefits to the users are easy to use and develop in their production environment, and taking avantages of Scylla. Using the Ragel to parse the Redis request, server abtains the command name and the parameters from the request, invokes the Scylla's internal API to read and write the data, then replies to client. Signed-off-by: Peng Jian, <pengjian.uestc@gmail.com>
94 lines
4.0 KiB
C++
94 lines
4.0 KiB
C++
/*
|
|
* Copyright (C) 2019 pengjian.uestc @ gmail.com
|
|
*/
|
|
|
|
/*
|
|
* This file is part of Scylla.
|
|
*
|
|
* Scylla 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.
|
|
*
|
|
* Scylla is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "redis/mutation_utils.hh"
|
|
#include "types.hh"
|
|
#include "service/storage_service.hh"
|
|
#include "schema.hh"
|
|
#include "database.hh"
|
|
#include <seastar/core/print.hh>
|
|
#include "redis/keyspace_utils.hh"
|
|
#include "redis/options.hh"
|
|
#include "mutation.hh"
|
|
#include "service_permit.hh"
|
|
|
|
using namespace seastar;
|
|
|
|
namespace redis {
|
|
|
|
atomic_cell make_cell(const schema_ptr schema,
|
|
const abstract_type& type,
|
|
bytes_view value,
|
|
long cttl = 0)
|
|
{
|
|
|
|
if (cttl > 0) {
|
|
auto ttl = std::chrono::seconds(cttl);
|
|
return atomic_cell::make_live(type, api::new_timestamp(), value, gc_clock::now() + ttl, ttl, atomic_cell::collection_member::no);
|
|
}
|
|
auto ttl = schema->default_time_to_live();
|
|
if (ttl.count() > 0) {
|
|
return atomic_cell::make_live(type, api::new_timestamp(), value, gc_clock::now() + ttl, ttl, atomic_cell::collection_member::no);
|
|
}
|
|
return atomic_cell::make_live(type, api::new_timestamp(), value, atomic_cell::collection_member::no);
|
|
}
|
|
|
|
mutation make_mutation(service::storage_proxy& proxy, const redis_options& options, bytes&& key, bytes&& data, long ttl) {
|
|
auto schema = get_schema(proxy, options.get_keyspace_name(), redis::STRINGs);
|
|
const column_definition& column = *schema->get_column_definition(redis::DATA_COLUMN_NAME);
|
|
auto pkey = partition_key::from_single_value(*schema, key);
|
|
auto m = mutation(schema, std::move(pkey));
|
|
auto cell = make_cell(schema, *(column.type.get()), data, ttl);
|
|
m.set_clustered_cell(clustering_key::make_empty(), column, std::move(cell));
|
|
return m;
|
|
}
|
|
|
|
future<> write_strings(service::storage_proxy& proxy, redis::redis_options& options, bytes&& key, bytes&& data, long ttl, service_permit permit) {
|
|
db::timeout_clock::time_point timeout = db::timeout_clock::now() + options.get_write_timeout();
|
|
auto m = make_mutation(proxy, options, std::move(key), std::move(data), ttl);
|
|
auto write_consistency_level = options.get_write_consistency_level();
|
|
return proxy.mutate(std::vector<mutation> {std::move(m)}, write_consistency_level, timeout, nullptr, permit);
|
|
}
|
|
|
|
|
|
mutation make_tombstone(service::storage_proxy& proxy, const redis_options& options, const sstring& cf_name, const bytes& key) {
|
|
auto schema = get_schema(proxy, options.get_keyspace_name(), cf_name);
|
|
auto pkey = partition_key::from_single_value(*schema, key);
|
|
auto m = mutation(schema, std::move(pkey));
|
|
m.partition().apply(tombstone { api::new_timestamp(), gc_clock::now() });
|
|
return m;
|
|
}
|
|
|
|
future<> delete_object(service::storage_proxy& proxy, redis::redis_options& options, bytes&& key, service_permit permit) {
|
|
|
|
db::timeout_clock::time_point timeout = db::timeout_clock::now() + options.get_write_timeout();
|
|
auto write_consistency_level = options.get_write_consistency_level();
|
|
std::vector<sstring> tables { redis::STRINGs, redis::LISTs, redis::HASHes, redis::SETs, redis::ZSETs };
|
|
|
|
auto remove = [&proxy, timeout, write_consistency_level, permit, &options, key = std::move(key)] (const sstring& cf_name) {
|
|
auto m = make_tombstone(proxy, options, cf_name, key);
|
|
return proxy.mutate(std::vector<mutation> {std::move(m)}, write_consistency_level, timeout, nullptr, permit);
|
|
};
|
|
return parallel_for_each(tables.begin(), tables.end(), remove);
|
|
}
|
|
|
|
}
|