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3fc4e23a36
forward_service is nondescriptive and misnamed, as it does more than forward requests. It's a classic map/reduce algorithm (and in fact one of its parameters is "reducer"), so name it accordingly. The name "forward" leaked into the wire protocol for the messaging service RPC isolation cookie, so it's kept there. It's also maintained in the name of the logger (for "nodetool setlogginglevel") for compatibility with tests. Closes scylladb/scylladb#19444
50 lines
1.1 KiB
C++
50 lines
1.1 KiB
C++
/*
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* Copyright 2022-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#include "dht/i_partitioner_fwd.hh"
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#include "idl/read_command.idl.hh"
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#include "idl/consistency_level.idl.hh"
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namespace db {
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namespace functions {
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class function_name {
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sstring keyspace;
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sstring name;
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};
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}
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}
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namespace query {
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struct mapreduce_request {
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struct aggregation_info {
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db::functions::function_name name;
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std::vector<sstring> column_names;
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};
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enum class reduction_type : uint8_t {
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count,
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aggregate
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};
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std::vector<query::mapreduce_request::reduction_type> reduction_types;
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query::read_command cmd;
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dht::partition_range_vector pr;
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db::consistency_level cl;
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lowres_system_clock::time_point timeout;
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std::optional<std::vector<query::mapreduce_request::aggregation_info>> aggregation_infos [[version 5.1]];
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};
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struct mapreduce_result {
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std::vector<bytes_opt> query_results;
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};
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verb mapreduce_request(query::mapreduce_request req [[ref]], std::optional<tracing::trace_info> trace_info [[ref]]) -> query::mapreduce_result;
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}
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