b6061bb97d
Because of snitch ex-dependencies some bits on topology were initialized with nasty post-start calls. Now it all can be removed and the initial topology information can be provided by topology::config Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
371 lines
17 KiB
C++
371 lines
17 KiB
C++
/*
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* Copyright (C) 2021-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 <algorithm>
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#include <boost/algorithm/string.hpp>
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#include <seastar/core/fstream.hh>
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#include <seastar/http/short_streams.hh>
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#include <seastar/util/closeable.hh>
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#include <seastar/util/short_streams.hh>
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#include "cdc/cdc_partitioner.hh"
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#include "cdc/log.hh"
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#include "cql3/query_processor.hh"
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#include "cql3/statements/create_keyspace_statement.hh"
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#include "cql3/statements/create_table_statement.hh"
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#include "cql3/statements/create_type_statement.hh"
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#include "cql3/statements/update_statement.hh"
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#include "db/cql_type_parser.hh"
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#include "db/config.hh"
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#include "db/extensions.hh"
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#include "db/system_distributed_keyspace.hh"
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#include "db/schema_tables.hh"
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#include "db/system_keyspace.hh"
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#include "replica/database.hh"
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#include "data_dictionary/impl.hh"
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#include "data_dictionary/data_dictionary.hh"
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#include "gms/feature_service.hh"
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#include "locator/abstract_replication_strategy.hh"
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#include "tools/schema_loader.hh"
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namespace {
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class data_dictionary_impl;
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struct keyspace;
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struct table;
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struct database {
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db::extensions extensions;
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db::config& cfg;
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gms::feature_service& features;
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std::list<keyspace> keyspaces;
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std::list<table> tables;
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database(db::config& cfg, gms::feature_service& features) : cfg(cfg), features(features)
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{ }
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};
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struct keyspace {
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lw_shared_ptr<keyspace_metadata> metadata;
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explicit keyspace(lw_shared_ptr<keyspace_metadata> metadata) : metadata(std::move(metadata))
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{ }
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};
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struct table {
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keyspace& ks;
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schema_ptr schema;
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secondary_index::secondary_index_manager secondary_idx_man;
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table(data_dictionary_impl& impl, keyspace& ks, schema_ptr schema);
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};
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class data_dictionary_impl : public data_dictionary::impl {
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public:
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const data_dictionary::database wrap(const database& db) const {
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return make_database(this, &db);
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}
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data_dictionary::keyspace wrap(const keyspace& ks) const {
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return make_keyspace(this, &ks);
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}
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data_dictionary::table wrap(const table& t) const {
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return make_table(this, &t);
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}
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static const database& unwrap(data_dictionary::database db) {
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return *static_cast<const database*>(extract(db));
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}
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static const keyspace& unwrap(data_dictionary::keyspace ks) {
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return *static_cast<const keyspace*>(extract(ks));
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}
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static const table& unwrap(data_dictionary::table t) {
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return *static_cast<const table*>(extract(t));
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}
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private:
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virtual std::optional<data_dictionary::keyspace> try_find_keyspace(data_dictionary::database db, std::string_view name) const override {
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auto& keyspaces = unwrap(db).keyspaces;
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auto it = std::find_if(keyspaces.begin(), keyspaces.end(), [name] (const keyspace& ks) { return ks.metadata->name() == name; });
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if (it == keyspaces.end()) {
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return {};
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}
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return wrap(*it);
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}
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virtual std::vector<data_dictionary::keyspace> get_keyspaces(data_dictionary::database db) const override {
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return boost::copy_range<std::vector<data_dictionary::keyspace>>(unwrap(db).keyspaces | boost::adaptors::transformed([this] (const keyspace& ks) { return wrap(ks); }));
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}
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virtual std::vector<data_dictionary::table> get_tables(data_dictionary::database db) const override {
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return boost::copy_range<std::vector<data_dictionary::table>>(unwrap(db).tables | boost::adaptors::transformed([this] (const table& ks) { return wrap(ks); }));
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}
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virtual std::optional<data_dictionary::table> try_find_table(data_dictionary::database db, std::string_view ks, std::string_view tab) const override {
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auto& tables = unwrap(db).tables;
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auto it = std::find_if(tables.begin(), tables.end(), [tab] (const table& tbl) { return tbl.schema->cf_name() == tab; });
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if (it == tables.end()) {
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return {};
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}
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return wrap(*it);
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}
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virtual std::optional<data_dictionary::table> try_find_table(data_dictionary::database db, table_id id) const override {
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auto& tables = unwrap(db).tables;
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auto it = std::find_if(tables.begin(), tables.end(), [id] (const table& tbl) { return tbl.schema->id() == id; });
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if (it == tables.end()) {
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return {};
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}
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return wrap(*it);
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}
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virtual const secondary_index::secondary_index_manager& get_index_manager(data_dictionary::table t) const override {
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return unwrap(t).secondary_idx_man;
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}
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virtual schema_ptr get_table_schema(data_dictionary::table t) const override {
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return unwrap(t).schema;
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}
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virtual lw_shared_ptr<keyspace_metadata> get_keyspace_metadata(data_dictionary::keyspace ks) const override {
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return unwrap(ks).metadata;
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}
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virtual bool is_internal(data_dictionary::keyspace ks) const override {
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return is_system_keyspace(unwrap(ks).metadata->name());
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}
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virtual const locator::abstract_replication_strategy& get_replication_strategy(data_dictionary::keyspace ks) const override {
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throw std::bad_function_call();
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}
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virtual const std::vector<view_ptr>& get_table_views(data_dictionary::table t) const override {
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return {};
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}
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virtual sstring get_available_index_name(data_dictionary::database db, std::string_view ks_name, std::string_view table_name,
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std::optional<sstring> index_name_root) const override {
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throw std::bad_function_call();
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}
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virtual std::set<sstring> existing_index_names(data_dictionary::database db, std::string_view ks_name, std::string_view cf_to_exclude = {}) const override {
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return {};
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}
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virtual schema_ptr find_indexed_table(data_dictionary::database db, std::string_view ks_name, std::string_view index_name) const override {
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return {};
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}
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virtual schema_ptr get_cdc_base_table(data_dictionary::database db, const schema&) const override {
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return {};
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}
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virtual const db::config& get_config(data_dictionary::database db) const override {
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return unwrap(db).cfg;
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}
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virtual const db::extensions& get_extensions(data_dictionary::database db) const override {
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return unwrap(db).extensions;
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}
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virtual const gms::feature_service& get_features(data_dictionary::database db) const override {
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return unwrap(db).features;
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}
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virtual replica::database& real_database(data_dictionary::database db) const override {
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throw std::bad_function_call();
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}
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};
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class user_types_storage : public data_dictionary::user_types_storage {
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database& _db;
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public:
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user_types_storage(database& db) noexcept : _db(db) {}
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virtual const data_dictionary::user_types_metadata& get(const sstring& name) const override {
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for (const auto& ks : _db.keyspaces) {
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if (ks.metadata->name() == name) {
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return ks.metadata->user_types();
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}
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}
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throw data_dictionary::no_such_keyspace(name);
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}
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};
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table::table(data_dictionary_impl& impl, keyspace& ks, schema_ptr schema) :
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ks(ks), schema(std::move(schema)), secondary_idx_man(impl.wrap(*this))
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{ }
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sstring read_file(std::filesystem::path path) {
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auto file = open_file_dma(path.native(), open_flags::ro).get();
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auto fstream = make_file_input_stream(file);
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return util::read_entire_stream_contiguous(fstream).get();
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}
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std::vector<schema_ptr> do_load_schemas(std::string_view schema_str) {
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cql3::cql_stats cql_stats;
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db::config cfg;
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cfg.enable_cache(false);
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cfg.volatile_system_keyspace_for_testing(true);
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gms::feature_service feature_service(gms::feature_config_from_db_config(cfg));
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feature_service.enable(feature_service.supported_feature_set());
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sharded<locator::shared_token_metadata> token_metadata;
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utils::fb_utilities::set_broadcast_address(gms::inet_address("localhost"));
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token_metadata.start([] () noexcept { return db::schema_tables::hold_merge_lock(); }, locator::token_metadata::config{}).get();
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auto stop_token_metadata = deferred_stop(token_metadata);
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data_dictionary_impl dd_impl;
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database real_db(cfg, feature_service);
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auto db = dd_impl.wrap(real_db);
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// Mock system_schema keyspace to be able to parse modification statements
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// against system_schema.dropped_columns.
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real_db.keyspaces.emplace_back(make_lw_shared<keyspace_metadata>(
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db::schema_tables::NAME,
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"org.apache.cassandra.locator.LocalStrategy",
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std::map<sstring, sstring>{},
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false));
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real_db.tables.emplace_back(dd_impl, real_db.keyspaces.back(), db::schema_tables::dropped_columns());
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std::vector<schema_ptr> schemas;
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auto find_or_create_keyspace = [&] (const sstring& name) -> data_dictionary::keyspace {
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try {
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return db.find_keyspace(name);
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} catch (replica::no_such_keyspace&) {
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// fall-though to below
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}
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auto raw_statement = cql3::query_processor::parse_statement(
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fmt::format("CREATE KEYSPACE {} WITH replication = {{'class': 'SimpleStrategy', 'replication_factor': '1'}}", name));
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auto prepared_statement = raw_statement->prepare(db, cql_stats);
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auto* statement = prepared_statement->statement.get();
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auto p = dynamic_cast<cql3::statements::create_keyspace_statement*>(statement);
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assert(p);
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real_db.keyspaces.emplace_back(p->get_keyspace_metadata(*token_metadata.local().get()));
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return db.find_keyspace(name);
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};
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std::vector<std::unique_ptr<cql3::statements::raw::parsed_statement>> raw_statements;
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try {
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raw_statements = cql3::query_processor::parse_statements(schema_str);
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} catch (...) {
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throw std::runtime_error(format("tools:do_load_schemas(): failed to parse CQL statements: {}", std::current_exception()));
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}
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for (auto& raw_statement : raw_statements) {
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auto cf_statement = dynamic_cast<cql3::statements::raw::cf_statement*>(raw_statement.get());
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if (!cf_statement) {
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continue; // we don't support any non-cf statements here
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}
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auto ks = find_or_create_keyspace(cf_statement->keyspace());
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auto prepared_statement = cf_statement->prepare(db, cql_stats);
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auto* statement = prepared_statement->statement.get();
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if (auto p = dynamic_cast<cql3::statements::create_keyspace_statement*>(statement)) {
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real_db.keyspaces.emplace_back(p->get_keyspace_metadata(*token_metadata.local().get()));
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} else if (auto p = dynamic_cast<cql3::statements::create_type_statement*>(statement)) {
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dd_impl.unwrap(ks).metadata->add_user_type(p->create_type(db));
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} else if (auto p = dynamic_cast<cql3::statements::create_table_statement*>(statement)) {
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schemas.push_back(p->get_cf_meta_data(db));
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// CDC tables use a custom partitioner, which is not reflected when
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// dumping the schema to schema.cql, so we have to manually set it here.
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if (cdc::is_log_name(schemas.back()->cf_name())) {
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schema_builder b(std::move(schemas.back()));
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b.with_partitioner(cdc::cdc_partitioner::classname);
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schemas.back() = b.build();
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}
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} else if (auto p = dynamic_cast<cql3::statements::update_statement*>(statement)) {
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if (p->keyspace() != db::schema_tables::NAME && p->column_family() != db::schema_tables::DROPPED_COLUMNS) {
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throw std::runtime_error(fmt::format("tools::do_load_schemas(): expected modification statement to be against {}.{}, but it is against {}.{}",
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db::schema_tables::NAME, db::schema_tables::DROPPED_COLUMNS, p->keyspace(), p->column_family()));
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}
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auto schema = db::schema_tables::dropped_columns();
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cql3::statements::modification_statement::json_cache_opt json_cache{};
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cql3::update_parameters params(schema, cql3::query_options::DEFAULT, api::new_timestamp(), schema->default_time_to_live(), cql3::update_parameters::prefetch_data(schema));
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auto pkeys = p->build_partition_keys(cql3::query_options::DEFAULT, json_cache);
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auto ckranges = p->create_clustering_ranges(cql3::query_options::DEFAULT, json_cache);
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auto updates = p->apply_updates(pkeys, ckranges, params, json_cache);
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if (updates.size() != 1) {
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throw std::runtime_error(fmt::format("tools::do_load_schemas(): expected one update per statement for {}.{}, got: {}",
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db::schema_tables::NAME, db::schema_tables::DROPPED_COLUMNS, updates.size()));
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}
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auto& mut = updates.front();
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if (!mut.partition().row_tombstones().empty()) {
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throw std::runtime_error(fmt::format("tools::do_load_schemas(): expected only update against {}.{}, not deletes",
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db::schema_tables::NAME, db::schema_tables::DROPPED_COLUMNS));
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}
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query::result_set rs(mut);
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for (auto& row : rs.rows()) {
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const auto keyspace_name = row.get_nonnull<sstring>("keyspace_name");
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const auto table_name = row.get_nonnull<sstring>("table_name");
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auto it = std::find_if(schemas.begin(), schemas.end(), [&] (schema_ptr s) {
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return s->ks_name() == keyspace_name && s->cf_name() == table_name;
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});
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if (it == schemas.end()) {
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throw std::runtime_error(fmt::format("tools::do_load_schemas(): failed applying update to {}.{}, the table it applies to is not found: {}.{}",
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db::schema_tables::NAME, db::schema_tables::DROPPED_COLUMNS, keyspace_name, table_name));
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}
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auto name = row.get_nonnull<sstring>("column_name");
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auto type = db::cql_type_parser::parse(keyspace_name, row.get_nonnull<sstring>("type"), user_types_storage(real_db));
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auto time = row.get_nonnull<db_clock::time_point>("dropped_time");
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*it = schema_builder(*it).without_column(std::move(name), std::move(type), time.time_since_epoch().count()).build();
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}
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} else {
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throw std::runtime_error(fmt::format("tools::do_load_schemas(): expected statement to be one of (create keyspace, create type, create table), got: {}",
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typeid(statement).name()));
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}
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}
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return schemas;
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}
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} // anonymous namespace
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namespace tools {
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future<std::vector<schema_ptr>> load_schemas(std::string_view schema_str) {
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return async([schema_str] () mutable {
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return do_load_schemas(schema_str);
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});
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}
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future<schema_ptr> load_one_schema(std::string_view schema_str) {
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return async([schema_str] () mutable {
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auto schemas = do_load_schemas(schema_str);
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if (schemas.size() != 1) {
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throw std::runtime_error(fmt::format("Schema string expected to contain exactly 1 schema, actually has {}", schemas.size()));
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}
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return std::move(schemas.front());
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});
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}
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future<std::vector<schema_ptr>> load_schemas_from_file(std::filesystem::path path) {
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return async([path] () mutable {
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return do_load_schemas(read_file(path));
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});
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}
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future<schema_ptr> load_one_schema_from_file(std::filesystem::path path) {
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return async([path] () mutable {
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auto schemas = do_load_schemas(read_file(path));
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if (schemas.size() != 1) {
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throw std::runtime_error(fmt::format("Schema file {} expected to contain exactly 1 schema, actually has {}", path.native(), schemas.size()));
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}
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return std::move(schemas.front());
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});
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}
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schema_ptr load_system_schema(std::string_view keyspace, std::string_view table) {
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db::config cfg;
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cfg.experimental.set(true);
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cfg.experimental_features.set(db::experimental_features_t::all());
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const std::unordered_map<std::string_view, std::vector<schema_ptr>> schemas{
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{db::schema_tables::NAME, db::schema_tables::all_tables(db::schema_features::full())},
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{db::system_keyspace::NAME, db::system_keyspace::all_tables(cfg)},
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{db::system_distributed_keyspace::NAME, db::system_distributed_keyspace::all_distributed_tables()},
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{db::system_distributed_keyspace::NAME_EVERYWHERE, db::system_distributed_keyspace::all_everywhere_tables()},
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};
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auto ks_it = schemas.find(keyspace);
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if (ks_it == schemas.end()) {
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throw std::invalid_argument(fmt::format("unknown system keyspace: {}", keyspace));
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}
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auto tb_it = boost::find_if(ks_it->second, [&] (const schema_ptr& s) {
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return s->cf_name() == table;
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});
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if (tb_it == ks_it->second.end()) {
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throw std::invalid_argument(fmt::format("unknown table {} in system keyspace: {}", table, keyspace));
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}
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return *tb_it;
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}
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} // namespace tools
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