f3eade2f62
Drop the AGPL license in favor of a source-available license. See the blog post [1] for details. [1] https://www.scylladb.com/2024/12/18/why-were-moving-to-a-source-available-license/
83 lines
2.1 KiB
C++
83 lines
2.1 KiB
C++
/*
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* Copyright (C) 2015-present ScyllaDB
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*
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* Modified by ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: (LicenseRef-ScyllaDB-Source-Available-1.0 and Apache-2.0)
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*/
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#pragma once
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#include "gms/inet_address.hh"
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#include <seastar/core/sstring.hh>
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#include <seastar/net/api.hh>
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namespace cql_transport {
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class event {
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public:
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enum class event_type { TOPOLOGY_CHANGE, STATUS_CHANGE, SCHEMA_CHANGE };
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const event_type type;
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private:
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event(const event_type& type_);
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public:
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class topology_change;
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class status_change;
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class schema_change;
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};
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class event::topology_change : public event {
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public:
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enum class change_type { NEW_NODE, REMOVED_NODE, MOVED_NODE };
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const change_type change;
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const socket_address node;
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topology_change(change_type change, const socket_address& node);
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static topology_change new_node(const gms::inet_address& host, uint16_t port);
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static topology_change removed_node(const gms::inet_address& host, uint16_t port);
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};
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class event::status_change : public event {
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public:
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enum class status_type { UP, DOWN };
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const status_type status;
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const socket_address node;
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status_change(status_type status, const socket_address& node);
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static status_change node_up(const gms::inet_address& host, uint16_t port);
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static status_change node_down(const gms::inet_address& host, uint16_t port);
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};
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class event::schema_change : public event {
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public:
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enum class change_type { CREATED, UPDATED, DROPPED };
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enum class target_type { KEYSPACE, TABLE, TYPE, FUNCTION, AGGREGATE };
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const change_type change;
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const target_type target;
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// Every target is followed by at least a keyspace.
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const sstring keyspace;
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// Target types other than keyspace have a list of arguments.
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const std::vector<sstring> arguments;
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schema_change(change_type change, target_type target, sstring keyspace, std::vector<sstring> arguments);
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template <typename... Ts>
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schema_change(change_type change, target_type target, sstring keyspace, Ts... arguments)
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: schema_change(change, target, keyspace, std::vector<sstring>{std::move(arguments)...}) {}
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};
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}
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