01599ffbae
Support to delete multiple keys in one DEL command. The feature of returning number of the really deleted keys is still not supported. Return empty string to client for GET command when the required key is not exists. Fixes: #5334 Signed-off-by: Peng Jian <pengjian.uestc@gmail.com>
94 lines
4.1 KiB
C++
94 lines
4.1 KiB
C++
/*
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* Copyright (C) 2019 pengjian.uestc @ gmail.com
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "redis/mutation_utils.hh"
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#include "types.hh"
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#include "service/storage_service.hh"
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#include "schema.hh"
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#include "database.hh"
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#include <seastar/core/print.hh>
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#include "redis/keyspace_utils.hh"
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#include "redis/options.hh"
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#include "mutation.hh"
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#include "service_permit.hh"
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using namespace seastar;
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namespace redis {
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atomic_cell make_cell(const schema_ptr schema,
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const abstract_type& type,
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bytes_view value,
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long cttl = 0)
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{
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if (cttl > 0) {
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auto ttl = std::chrono::seconds(cttl);
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return atomic_cell::make_live(type, api::new_timestamp(), value, gc_clock::now() + ttl, ttl, atomic_cell::collection_member::no);
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}
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auto ttl = schema->default_time_to_live();
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if (ttl.count() > 0) {
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return atomic_cell::make_live(type, api::new_timestamp(), value, gc_clock::now() + ttl, ttl, atomic_cell::collection_member::no);
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}
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return atomic_cell::make_live(type, api::new_timestamp(), value, atomic_cell::collection_member::no);
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}
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mutation make_mutation(service::storage_proxy& proxy, const redis_options& options, bytes&& key, bytes&& data, long ttl) {
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auto schema = get_schema(proxy, options.get_keyspace_name(), redis::STRINGs);
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const column_definition& column = *schema->get_column_definition(redis::DATA_COLUMN_NAME);
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auto pkey = partition_key::from_single_value(*schema, key);
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auto m = mutation(schema, std::move(pkey));
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auto cell = make_cell(schema, *(column.type.get()), data, ttl);
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m.set_clustered_cell(clustering_key::make_empty(), column, std::move(cell));
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return m;
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}
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future<> write_strings(service::storage_proxy& proxy, redis::redis_options& options, bytes&& key, bytes&& data, long ttl, service_permit permit) {
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db::timeout_clock::time_point timeout = db::timeout_clock::now() + options.get_write_timeout();
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auto m = make_mutation(proxy, options, std::move(key), std::move(data), ttl);
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auto write_consistency_level = options.get_write_consistency_level();
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return proxy.mutate(std::vector<mutation> {std::move(m)}, write_consistency_level, timeout, nullptr, permit);
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}
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mutation make_tombstone(service::storage_proxy& proxy, const redis_options& options, const sstring& cf_name, const bytes& key) {
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auto schema = get_schema(proxy, options.get_keyspace_name(), cf_name);
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auto pkey = partition_key::from_single_value(*schema, key);
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auto m = mutation(schema, std::move(pkey));
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m.partition().apply(tombstone { api::new_timestamp(), gc_clock::now() });
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return m;
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}
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future<> delete_objects(service::storage_proxy& proxy, redis::redis_options& options, std::vector<bytes>&& keys, service_permit permit) {
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db::timeout_clock::time_point timeout = db::timeout_clock::now() + options.get_write_timeout();
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auto write_consistency_level = options.get_write_consistency_level();
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std::vector<sstring> tables { redis::STRINGs, redis::LISTs, redis::HASHes, redis::SETs, redis::ZSETs };
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auto remove = [&proxy, timeout, write_consistency_level, permit, &options, keys = std::move(keys)] (const sstring& cf_name) {
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return parallel_for_each(keys.begin(), keys.end(), [&proxy, timeout, write_consistency_level, &options, permit, cf_name] (const bytes& key) {
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auto m = make_tombstone(proxy, options, cf_name, key);
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return proxy.mutate(std::vector<mutation> {std::move(m)}, write_consistency_level, timeout, nullptr, permit);
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});
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};
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return parallel_for_each(tables.begin(), tables.end(), remove);
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}
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}
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