6bc30f1944
On boot several manipulations with system.local are performed. 1. The host_id value is selected from it with key = local If not found, system_keyspace generates a new host_id, inserts the new value into the table and returns back 2. The cluster_name is selected from it with key = local Then it's system_keyspace that either checks that the name matches the one from db::config, or inserts the db::config value into the table 3. The row with key = local is updated with various info like versions, listen, rpc and bcast addresses, dc, rack, etc. Unconditionally All three steps are scattered over main, p.1 is called directly, p.2 and p.3 are executed via system_keyspace::setup() that happens rather late. Also there's some touch of this table from the cql_test_env startup code. The proposal is to collect this setup into one place and execute it early -- as soon as the system.local table is populated. This frees the system_keyspace code from the logic of selecting host id and cluster name leaving it to main and keeps it with only select/insert work. refs: #2795 Signed-off-by: Pavel Emelyanov <xemul@scylladb.com> Closes #15082
537 lines
21 KiB
C++
537 lines
21 KiB
C++
/*
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* Modified by ScyllaDB
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* Copyright (C) 2015-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: (AGPL-3.0-or-later and Apache-2.0)
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*/
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#pragma once
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#include <optional>
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#include <unordered_map>
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#include <utility>
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#include <vector>
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#include "schema/schema_fwd.hh"
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#include "utils/UUID.hh"
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#include "query-result-set.hh"
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#include "db_clock.hh"
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#include "mutation_query.hh"
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#include "system_keyspace_view_types.hh"
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#include <map>
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#include <seastar/core/distributed.hh>
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#include "cdc/generation_id.hh"
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#include "locator/host_id.hh"
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#include "mutation/canonical_mutation.hh"
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namespace sstables {
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struct entry_descriptor;
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class generation_type;
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}
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namespace service {
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class storage_service;
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class raft_group_registry;
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struct topology;
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struct topology_features;
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namespace paxos {
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class paxos_state;
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class proposal;
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} // namespace service::paxos
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}
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namespace netw {
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class messaging_service;
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}
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namespace cql3 {
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class query_processor;
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class untyped_result_set;
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}
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namespace gms {
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class inet_address;
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class feature;
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class feature_service;
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}
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namespace locator {
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class effective_replication_map_factory;
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class endpoint_dc_rack;
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class snitch_ptr;
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} // namespace locator
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namespace gms {
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class gossiper;
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}
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namespace cdc {
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class topology_description;
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}
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bool is_system_keyspace(std::string_view ks_name);
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namespace db {
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sstring system_keyspace_name();
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class system_keyspace;
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namespace schema_tables {
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future<column_mapping> get_column_mapping(db::system_keyspace& sys_ks, ::table_id table_id, table_schema_version version);
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future<bool> column_mapping_exists(db::system_keyspace& sys_ks, table_id table_id, table_schema_version version);
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future<> drop_column_mapping(db::system_keyspace& sys_ks, table_id table_id, table_schema_version version);
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}
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class config;
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struct local_cache;
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using system_keyspace_view_name = std::pair<sstring, sstring>;
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class system_keyspace_view_build_progress;
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struct truncation_record;
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struct replay_position;
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typedef std::vector<db::replay_position> replay_positions;
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struct compaction_history_entry {
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utils::UUID id;
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sstring ks;
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sstring cf;
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int64_t compacted_at = 0;
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int64_t bytes_in = 0;
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int64_t bytes_out = 0;
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// Key: number of rows merged
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// Value: counter
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std::unordered_map<int32_t, int64_t> rows_merged;
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};
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class system_keyspace : public seastar::peering_sharded_service<system_keyspace>, public seastar::async_sharded_service<system_keyspace> {
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cql3::query_processor& _qp;
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replica::database& _db;
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std::unique_ptr<local_cache> _cache;
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static schema_ptr raft_snapshot_config();
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static schema_ptr local();
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static schema_ptr peers();
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static schema_ptr peer_events();
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static schema_ptr range_xfers();
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static schema_ptr compactions_in_progress();
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static schema_ptr compaction_history();
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static schema_ptr sstable_activity();
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static schema_ptr large_partitions();
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static schema_ptr large_rows();
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static schema_ptr large_cells();
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static schema_ptr scylla_local();
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future<> force_blocking_flush(sstring cfname);
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future<> build_bootstrap_info();
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future<> cache_truncation_record();
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template <typename Value>
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future<> update_cached_values(gms::inet_address ep, sstring column_name, Value value);
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public:
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static schema_ptr size_estimates();
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public:
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static constexpr auto NAME = "system";
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static constexpr auto HINTS = "hints";
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static constexpr auto BATCHLOG = "batchlog";
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static constexpr auto PAXOS = "paxos";
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static constexpr auto BUILT_INDEXES = "IndexInfo";
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static constexpr auto LOCAL = "local";
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static constexpr auto TRUNCATED = "truncated";
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static constexpr auto PEERS = "peers";
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static constexpr auto PEER_EVENTS = "peer_events";
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static constexpr auto RANGE_XFERS = "range_xfers";
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static constexpr auto COMPACTIONS_IN_PROGRESS = "compactions_in_progress";
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static constexpr auto COMPACTION_HISTORY = "compaction_history";
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static constexpr auto SSTABLE_ACTIVITY = "sstable_activity";
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static constexpr auto SIZE_ESTIMATES = "size_estimates";
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static constexpr auto LARGE_PARTITIONS = "large_partitions";
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static constexpr auto LARGE_ROWS = "large_rows";
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static constexpr auto LARGE_CELLS = "large_cells";
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static constexpr auto SCYLLA_LOCAL = "scylla_local";
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static constexpr auto RAFT = "raft";
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static constexpr auto RAFT_SNAPSHOTS = "raft_snapshots";
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static constexpr auto RAFT_SNAPSHOT_CONFIG = "raft_snapshot_config";
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static constexpr auto REPAIR_HISTORY = "repair_history";
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static constexpr auto GROUP0_HISTORY = "group0_history";
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static constexpr auto DISCOVERY = "discovery";
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static constexpr auto BROADCAST_KV_STORE = "broadcast_kv_store";
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static constexpr auto TOPOLOGY = "topology";
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static constexpr auto SSTABLES_REGISTRY = "sstables";
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static constexpr auto CDC_GENERATIONS_V3 = "cdc_generations_v3";
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static constexpr auto TABLETS = "tablets";
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struct v3 {
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static constexpr auto BATCHES = "batches";
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static constexpr auto PAXOS = "paxos";
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static constexpr auto BUILT_INDEXES = "IndexInfo";
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static constexpr auto LOCAL = "local";
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static constexpr auto PEERS = "peers";
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static constexpr auto PEER_EVENTS = "peer_events";
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static constexpr auto RANGE_XFERS = "range_xfers";
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static constexpr auto COMPACTION_HISTORY = "compaction_history";
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static constexpr auto SSTABLE_ACTIVITY = "sstable_activity";
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static constexpr auto SIZE_ESTIMATES = "size_estimates";
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static constexpr auto AVAILABLE_RANGES = "available_ranges";
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static constexpr auto VIEWS_BUILDS_IN_PROGRESS = "views_builds_in_progress";
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static constexpr auto BUILT_VIEWS = "built_views";
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static constexpr auto SCYLLA_VIEWS_BUILDS_IN_PROGRESS = "scylla_views_builds_in_progress";
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static constexpr auto CDC_LOCAL = "cdc_local";
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static schema_ptr batches();
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static schema_ptr built_indexes();
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static schema_ptr local();
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static schema_ptr truncated();
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static schema_ptr peers();
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static schema_ptr peer_events();
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static schema_ptr range_xfers();
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static schema_ptr compaction_history();
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static schema_ptr sstable_activity();
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static schema_ptr size_estimates();
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static schema_ptr large_partitions();
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static schema_ptr scylla_local();
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static schema_ptr available_ranges();
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static schema_ptr views_builds_in_progress();
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static schema_ptr built_views();
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static schema_ptr scylla_views_builds_in_progress();
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static schema_ptr cdc_local();
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};
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struct legacy {
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static constexpr auto HINTS = "hints";
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static constexpr auto BATCHLOG = "batchlog";
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static constexpr auto KEYSPACES = "schema_keyspaces";
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static constexpr auto COLUMNFAMILIES = "schema_columnfamilies";
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static constexpr auto COLUMNS = "schema_columns";
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static constexpr auto TRIGGERS = "schema_triggers";
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static constexpr auto USERTYPES = "schema_usertypes";
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static constexpr auto FUNCTIONS = "schema_functions";
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static constexpr auto AGGREGATES = "schema_aggregates";
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static schema_ptr keyspaces();
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static schema_ptr column_families();
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static schema_ptr columns();
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static schema_ptr triggers();
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static schema_ptr usertypes();
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static schema_ptr functions();
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static schema_ptr aggregates();
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static schema_ptr hints();
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static schema_ptr batchlog();
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};
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// Partition estimates for a given range of tokens.
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struct range_estimates {
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schema_ptr schema;
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bytes range_start_token;
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bytes range_end_token;
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int64_t partitions_count;
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int64_t mean_partition_size;
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};
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using view_name = system_keyspace_view_name;
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using view_build_progress = system_keyspace_view_build_progress;
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static schema_ptr hints();
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static schema_ptr batchlog();
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static schema_ptr paxos();
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static schema_ptr built_indexes(); // TODO (from Cassandra): make private
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static schema_ptr raft();
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static schema_ptr raft_snapshots();
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static schema_ptr repair_history();
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static schema_ptr group0_history();
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static schema_ptr discovery();
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static schema_ptr broadcast_kv_store();
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static schema_ptr topology();
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static schema_ptr sstables_registry();
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static schema_ptr cdc_generations_v3();
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static schema_ptr tablets();
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static table_schema_version generate_schema_version(table_id table_id, uint16_t offset = 0);
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future<> setup(sharded<netw::messaging_service>& ms);
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future<> update_schema_version(table_schema_version version);
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/*
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* Save tokens used by this node in the LOCAL table.
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*/
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future<> update_tokens(const std::unordered_set<dht::token>& tokens);
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/**
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* Record tokens being used by another node in the PEERS table.
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*/
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future<> update_tokens(gms::inet_address ep, const std::unordered_set<dht::token>& tokens);
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future<std::unordered_map<gms::inet_address, gms::inet_address>> get_preferred_ips();
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public:
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template <typename Value>
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future<> update_peer_info(gms::inet_address ep, sstring column_name, Value value);
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future<> remove_endpoint(gms::inet_address ep);
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future<> set_scylla_local_param(const sstring& key, const sstring& value);
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future<std::optional<sstring>> get_scylla_local_param(const sstring& key);
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private:
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template <typename T>
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future<> set_scylla_local_param_as(const sstring& key, const T& value);
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template <typename T>
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future<std::optional<T>> get_scylla_local_param_as(const sstring& key);
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public:
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static std::vector<schema_ptr> all_tables(const db::config& cfg);
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future<> make(
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locator::effective_replication_map_factory&,
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replica::database&,
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db::config&,
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system_table_load_phase phase);
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future<> initialize_virtual_tables(
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distributed<replica::database>&,
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distributed<service::storage_service>&,
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sharded<gms::gossiper>&,
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sharded<service::raft_group_registry>&,
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db::config&);
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/// overloads
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future<foreign_ptr<lw_shared_ptr<reconcilable_result>>>
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static query_mutations(distributed<replica::database>& db,
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const sstring& ks_name,
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const sstring& cf_name);
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future<foreign_ptr<lw_shared_ptr<reconcilable_result>>>
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static query_mutations(distributed<replica::database>& db,
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const sstring& ks_name,
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const sstring& cf_name,
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const dht::partition_range& partition_range,
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query::clustering_range row_ranges = query::clustering_range::make_open_ended_both_sides());
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// Returns all data from given system table.
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// Intended to be used by code which is not performance critical.
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static future<lw_shared_ptr<query::result_set>> query(distributed<replica::database>& db,
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const sstring& ks_name,
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const sstring& cf_name);
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// Returns a slice of given system table.
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// Intended to be used by code which is not performance critical.
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static future<lw_shared_ptr<query::result_set>> query(
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distributed<replica::database>& db,
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const sstring& ks_name,
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const sstring& cf_name,
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const dht::decorated_key& key,
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query::clustering_range row_ranges = query::clustering_range::make_open_ended_both_sides());
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/**
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* Return a map of IP addresses containing a map of dc and rack info
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*/
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future<std::unordered_map<gms::inet_address, locator::endpoint_dc_rack>> load_dc_rack_info();
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locator::endpoint_dc_rack local_dc_rack() const;
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enum class bootstrap_state {
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NEEDS_BOOTSTRAP,
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COMPLETED,
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IN_PROGRESS,
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DECOMMISSIONED
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};
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future<> update_compaction_history(utils::UUID uuid, sstring ksname, sstring cfname, int64_t compacted_at, int64_t bytes_in, int64_t bytes_out,
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std::unordered_map<int32_t, int64_t> rows_merged);
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using compaction_history_consumer = noncopyable_function<future<>(const compaction_history_entry&)>;
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future<> get_compaction_history(compaction_history_consumer f);
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struct repair_history_entry {
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tasks::task_id id;
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table_id table_uuid;
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db_clock::time_point ts;
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sstring ks;
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sstring cf;
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int64_t range_start;
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int64_t range_end;
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};
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future<> update_repair_history(repair_history_entry);
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using repair_history_consumer = noncopyable_function<future<>(const repair_history_entry&)>;
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future<> get_repair_history(table_id, repair_history_consumer f);
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typedef std::vector<db::replay_position> replay_positions;
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future<> save_truncation_record(table_id, db_clock::time_point truncated_at, db::replay_position);
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future<> save_truncation_record(const replica::column_family&, db_clock::time_point truncated_at, db::replay_position);
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future<replay_positions> get_truncated_position(table_id);
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future<db_clock::time_point> get_truncated_at(table_id);
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/**
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* Return a map of stored tokens to IP addresses
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*
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*/
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future<std::unordered_map<gms::inet_address, std::unordered_set<dht::token>>> load_tokens();
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/**
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* Return a map of store host_ids to IP addresses
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*
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*/
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future<std::unordered_map<gms::inet_address, locator::host_id>> load_host_ids();
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future<std::vector<gms::inet_address>> load_peers();
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/*
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* Read this node's tokens stored in the LOCAL table.
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* Used to initialize a restarting node.
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*/
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future<std::unordered_set<dht::token>> get_saved_tokens();
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/*
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* Gets this node's non-empty set of tokens.
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* TODO: maybe get this data from token_metadata instance?
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*/
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future<std::unordered_set<dht::token>> get_local_tokens();
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future<std::unordered_map<gms::inet_address, sstring>> load_peer_features();
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future<std::set<sstring>> load_local_enabled_features();
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future<> save_local_enabled_features(std::set<sstring> features);
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future<int> increment_and_get_generation();
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bool bootstrap_needed() const;
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bool bootstrap_complete() const;
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bool bootstrap_in_progress() const;
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bootstrap_state get_bootstrap_state() const;
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bool was_decommissioned() const;
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future<> set_bootstrap_state(bootstrap_state state);
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struct local_info {
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locator::host_id host_id;
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sstring cluster_name;
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gms::inet_address listen_address;
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};
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future<local_info> load_local_info();
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future<> save_local_info(local_info);
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private:
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future<truncation_record> get_truncation_record(table_id cf_id);
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public:
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static api::timestamp_type schema_creation_timestamp();
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/**
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* Builds a mutation for SIZE_ESTIMATES_CF containing the specified estimates.
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*/
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static mutation make_size_estimates_mutation(const sstring& ks, std::vector<range_estimates> estimates);
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future<> register_view_for_building(sstring ks_name, sstring view_name, const dht::token& token);
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future<> update_view_build_progress(sstring ks_name, sstring view_name, const dht::token& token);
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future<> remove_view_build_progress(sstring ks_name, sstring view_name);
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future<> remove_view_build_progress_across_all_shards(sstring ks_name, sstring view_name);
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future<> mark_view_as_built(sstring ks_name, sstring view_name);
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future<> remove_built_view(sstring ks_name, sstring view_name);
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future<std::vector<view_name>> load_built_views();
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future<std::vector<view_build_progress>> load_view_build_progress();
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// Paxos related functions
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future<service::paxos::paxos_state> load_paxos_state(partition_key_view key, schema_ptr s, gc_clock::time_point now,
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db::timeout_clock::time_point timeout);
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future<> save_paxos_promise(const schema& s, const partition_key& key, const utils::UUID& ballot, db::timeout_clock::time_point timeout);
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future<> save_paxos_proposal(const schema& s, const service::paxos::proposal& proposal, db::timeout_clock::time_point timeout);
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future<> save_paxos_decision(const schema& s, const service::paxos::proposal& decision, db::timeout_clock::time_point timeout);
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future<> delete_paxos_decision(const schema& s, const partition_key& key, const utils::UUID& ballot, db::timeout_clock::time_point timeout);
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// CDC related functions
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/*
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* Save the CDC generation ID announced by this node in persistent storage.
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*/
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future<> update_cdc_generation_id(cdc::generation_id);
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/*
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* Read the CDC generation ID announced by this node from persistent storage.
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* Used to initialize a restarting node.
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*/
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future<std::optional<cdc::generation_id>> get_cdc_generation_id();
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future<bool> cdc_is_rewritten();
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future<> cdc_set_rewritten(std::optional<cdc::generation_id_v1>);
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// Load Raft Group 0 id from scylla.local
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future<utils::UUID> get_raft_group0_id();
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// Persist Raft Group 0 id. Should be a TIMEUUID.
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future<> set_raft_group0_id(utils::UUID id);
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// Save advertised gossip feature set to system.local
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future<> save_local_supported_features(const std::set<std::string_view>& feats);
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// Get the last (the greatest in timeuuid order) state ID in the group 0 history table.
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// Assumes that the history table exists, i.e. Raft experimental feature is enabled.
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future<utils::UUID> get_last_group0_state_id();
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// Checks whether the group 0 history table contains the given state ID.
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// Assumes that the history table exists, i.e. Raft experimental feature is enabled.
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future<bool> group0_history_contains(utils::UUID state_id);
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future<service::topology> load_topology_state();
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future<service::topology_features> load_topology_features_state();
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future<int64_t> get_topology_fence_version();
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future<> update_topology_fence_version(int64_t value);
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// Read CDC generation data with the given UUID as key.
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// Precondition: the data is known to be present in the table (because it was committed earlier through group 0).
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future<cdc::topology_description> read_cdc_generation(utils::UUID id);
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|
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// The mutation appends the given state ID to the group 0 history table, with the given description if non-empty.
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//
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// If `gc_older_than` is provided, the mutation will also contain a tombstone that clears all entries whose
|
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// timestamps (contained in the state IDs) are older than `timestamp(state_id) - gc_older_than`.
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// The duration must be non-negative and smaller than `timestamp(state_id)`.
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//
|
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// The mutation's timestamp is extracted from the state ID.
|
|
static mutation make_group0_history_state_id_mutation(
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utils::UUID state_id, std::optional<gc_clock::duration> gc_older_than, std::string_view description);
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|
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// Obtain the contents of the group 0 history table in mutation form.
|
|
// Assumes that the history table exists, i.e. Raft experimental feature is enabled.
|
|
static future<mutation> get_group0_history(distributed<replica::database>&);
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|
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future<> sstables_registry_create_entry(sstring location, utils::UUID uuid, sstring status, sstables::entry_descriptor desc);
|
|
future<utils::UUID> sstables_registry_lookup_entry(sstring location, sstables::generation_type gen);
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future<> sstables_registry_update_entry_status(sstring location, sstables::generation_type gen, sstring status);
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future<> sstables_registry_delete_entry(sstring location, sstables::generation_type gen);
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|
using sstable_registry_entry_consumer = noncopyable_function<future<>(utils::UUID uuid, sstring state, sstables::entry_descriptor desc)>;
|
|
future<> sstables_registry_list(sstring location, sstable_registry_entry_consumer consumer);
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|
|
future<std::optional<sstring>> load_group0_upgrade_state();
|
|
future<> save_group0_upgrade_state(sstring);
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|
|
|
future<bool> get_must_synchronize_topology();
|
|
future<> set_must_synchronize_topology(bool);
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|
|
|
private:
|
|
static service::topology_features decode_topology_features_state(::shared_ptr<cql3::untyped_result_set> rs);
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|
|
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public:
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|
|
|
system_keyspace(cql3::query_processor& qp, replica::database& db, const locator::snitch_ptr&) noexcept;
|
|
~system_keyspace();
|
|
future<> shutdown();
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|
|
|
private:
|
|
future<::shared_ptr<cql3::untyped_result_set>> execute_cql(const sstring& query_string, const std::initializer_list<data_value>& values);
|
|
template <typename... Args>
|
|
future<::shared_ptr<cql3::untyped_result_set>> execute_cql_with_timeout(sstring req, db::timeout_clock::time_point timeout, Args&&... args);
|
|
|
|
public:
|
|
template <typename... Args>
|
|
future<::shared_ptr<cql3::untyped_result_set>> execute_cql(sstring req, Args&&... args) {
|
|
return execute_cql(req, { data_value(std::forward<Args>(args))... });
|
|
}
|
|
|
|
friend future<column_mapping> db::schema_tables::get_column_mapping(db::system_keyspace& sys_ks, ::table_id table_id, table_schema_version version);
|
|
friend future<bool> db::schema_tables::column_mapping_exists(db::system_keyspace& sys_ks, table_id table_id, table_schema_version version);
|
|
friend future<> db::schema_tables::drop_column_mapping(db::system_keyspace& sys_ks, table_id table_id, table_schema_version version);
|
|
}; // class system_keyspace
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|
|
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} // namespace db
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