e28b17de88
It returns a future, so converting an exception to an exceptional
future simplifies error handling in the caller.
Without this code like the one in
standard_role_manager::create_metadata_tables_if_missing has a
surprising behavior:
return when_all_succeed(
create_metadata_table_if_missing(...),
create_metadata_table_if_missing(...));
Since it might not wait for both futures. We could use the lambda
version of when_all_succeed, but changing
create_metadata_table_if_missing seems a nice API improvement.
Signed-off-by: Rafael Ávila de Espíndola <espindola@scylladb.com>
Message-Id: <20200317002051.117832-4-espindola@scylladb.com>
92 lines
2.3 KiB
C++
92 lines
2.3 KiB
C++
/*
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* Copyright (C) 2017 ScyllaDB
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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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#pragma once
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#include <chrono>
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#include <string_view>
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#include <seastar/core/future.hh>
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#include <seastar/core/abort_source.hh>
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#include <seastar/util/noncopyable_function.hh>
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#include <seastar/core/reactor.hh>
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#include <seastar/core/resource.hh>
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#include <seastar/core/sstring.hh>
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#include "log.hh"
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#include "seastarx.hh"
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#include "utils/exponential_backoff_retry.hh"
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using namespace std::chrono_literals;
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class database;
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class timeout_config;
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namespace service {
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class migration_manager;
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}
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namespace cql3 {
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class query_processor;
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}
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namespace auth {
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namespace meta {
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extern const sstring DEFAULT_SUPERUSER_NAME;
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extern const sstring AUTH_KS;
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extern const sstring USERS_CF;
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extern const sstring AUTH_PACKAGE_NAME;
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}
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template <class Task>
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future<> once_among_shards(Task&& f) {
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if (engine().cpu_id() == 0u) {
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return f();
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}
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return make_ready_future<>();
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}
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inline future<> delay_until_system_ready(seastar::abort_source& as) {
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return sleep_abortable(15s, as);
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}
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// Func must support being invoked more than once.
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future<> do_after_system_ready(seastar::abort_source& as, seastar::noncopyable_function<future<>()> func);
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future<> create_metadata_table_if_missing(
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std::string_view table_name,
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cql3::query_processor&,
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std::string_view cql,
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::service::migration_manager&) noexcept;
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future<> wait_for_schema_agreement(::service::migration_manager&, const database&, seastar::abort_source&);
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///
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/// Time-outs for internal, non-local CQL queries.
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///
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const timeout_config& internal_distributed_timeout_config() noexcept;
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}
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