9d4262e264
Change b0a2a9771f broke
the generic api implementation of
is_native_transport_running that relied on
the addresses list being empty agter the server is stopped.
To fix that, this change introduces a pure virtual method:
protocol_server::is_server_running that can be implemented
by each derived class.
Test: unit(dev)
DTest: nodetool_additional_test.py:TestNodetool.binary_test
Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
Message-Id: <20211114135248.588798-1-bhalevy@scylladb.com>
54 lines
2.1 KiB
C++
54 lines
2.1 KiB
C++
/*
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* Copyright (C) 2021-present 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 "seastarx.hh"
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#include <seastar/core/future.hh>
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#include <vector>
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// Abstraction for a server serving some kind of user-facing protocol.
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class protocol_server {
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public:
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virtual ~protocol_server() = default;
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/// Name of the server, can be different or the same as than the protocol it serves.
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virtual sstring name() const = 0;
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/// Name of the protocol served.
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virtual sstring protocol() const = 0;
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/// Version of the protocol served (if any -- not all protocols are versioned).
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virtual sstring protocol_version() const = 0;
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/// Addresses the server is listening on, should be empty when server is not running.
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virtual std::vector<socket_address> listen_addresses() const = 0;
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/// Check if the server is running.
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virtual bool is_server_running() const = 0;
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/// Start the server.
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/// Can be called multiple times, in any state of the server.
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virtual future<> start_server() = 0;
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/// Stop the server.
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/// Can be called multiple times, in any state of the server.
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/// This variant is used on shutdown and therefore it must succeed.
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virtual future<> stop_server() = 0;
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/// Stop the server. Weaker variant of \ref stop_server().
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/// Can be called multiple times, in any state of the server.
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/// This variant is used by the REST API so failure is acceptable.
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virtual future<> request_stop_server() = 0;
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};
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