Files
scylladb/tools/schema_loader.cc
Avi Kivity 1901475598 Merge 'config: mark "experimental" option unused and cleanups' from Kefu Chai
in this series, the "experimental" option is marked `Unused` as it has been marked deprecated for almost 2 years since scylla 4.6. and use `experimental_features` to specify the used experimental features explicitly.

Closes #14948

* github.com:scylladb/scylladb:
  config: remove unused namespace alias
  config: use std::ranges when appropriate
  config: drop "experimental" option
  test: disable 'enable_user_defined_functions' if experimental_features does not include udf
  test: pylib: specify experimental_features explicitly
2023-08-17 20:42:02 +03:00

594 lines
27 KiB
C++

/*
* Copyright (C) 2021-present ScyllaDB
*/
/*
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
#include <algorithm>
#include <boost/algorithm/string.hpp>
#include <seastar/core/fstream.hh>
#include <seastar/http/short_streams.hh>
#include <seastar/util/closeable.hh>
#include <seastar/util/short_streams.hh>
#include "cdc/cdc_partitioner.hh"
#include "cdc/log.hh"
#include "cql3/query_processor.hh"
#include "cql3/statements/create_keyspace_statement.hh"
#include "cql3/statements/create_table_statement.hh"
#include "cql3/statements/create_type_statement.hh"
#include "cql3/statements/update_statement.hh"
#include "db/cql_type_parser.hh"
#include "db/config.hh"
#include "db/extensions.hh"
#include "db/large_data_handler.hh"
#include "db/system_distributed_keyspace.hh"
#include "db/schema_tables.hh"
#include "db/system_keyspace.hh"
#include "partition_slice_builder.hh"
#include "readers/combined.hh"
#include "replica/database.hh"
#include "sstables/sstables_manager.hh"
#include "sstables/sstable_directory.hh"
#include "types/list.hh"
#include "data_dictionary/impl.hh"
#include "data_dictionary/data_dictionary.hh"
#include "gms/feature_service.hh"
#include "locator/abstract_replication_strategy.hh"
#include "tools/schema_loader.hh"
#include "utils/fb_utilities.hh"
namespace {
class data_dictionary_impl;
struct keyspace;
struct table;
struct database {
db::extensions extensions;
db::config& cfg;
gms::feature_service& features;
std::list<keyspace> keyspaces;
std::list<table> tables;
database(db::config& cfg, gms::feature_service& features) : cfg(cfg), features(features)
{ }
};
struct keyspace {
lw_shared_ptr<keyspace_metadata> metadata;
explicit keyspace(lw_shared_ptr<keyspace_metadata> metadata) : metadata(std::move(metadata))
{ }
};
struct table {
keyspace& ks;
schema_ptr schema;
secondary_index::secondary_index_manager secondary_idx_man;
table(data_dictionary_impl& impl, keyspace& ks, schema_ptr schema);
};
class data_dictionary_impl : public data_dictionary::impl {
public:
const data_dictionary::database wrap(const database& db) const {
return make_database(this, &db);
}
data_dictionary::keyspace wrap(const keyspace& ks) const {
return make_keyspace(this, &ks);
}
data_dictionary::table wrap(const table& t) const {
return make_table(this, &t);
}
static const database& unwrap(data_dictionary::database db) {
return *static_cast<const database*>(extract(db));
}
static const keyspace& unwrap(data_dictionary::keyspace ks) {
return *static_cast<const keyspace*>(extract(ks));
}
static const table& unwrap(data_dictionary::table t) {
return *static_cast<const table*>(extract(t));
}
private:
virtual const table_schema_version& get_version(data_dictionary::database) const override {
throw std::bad_function_call();
}
virtual std::optional<data_dictionary::keyspace> try_find_keyspace(data_dictionary::database db, std::string_view name) const override {
auto& keyspaces = unwrap(db).keyspaces;
auto it = std::find_if(keyspaces.begin(), keyspaces.end(), [name] (const keyspace& ks) { return ks.metadata->name() == name; });
if (it == keyspaces.end()) {
return {};
}
return wrap(*it);
}
virtual std::vector<data_dictionary::keyspace> get_keyspaces(data_dictionary::database db) const override {
return boost::copy_range<std::vector<data_dictionary::keyspace>>(unwrap(db).keyspaces | boost::adaptors::transformed([this] (const keyspace& ks) { return wrap(ks); }));
}
virtual std::vector<sstring> get_user_keyspaces(data_dictionary::database db) const override {
return boost::copy_range<std::vector<sstring>>(
unwrap(db).keyspaces
| boost::adaptors::transformed([] (const keyspace& ks) { return ks.metadata->name(); })
| boost::adaptors::filtered([] (const sstring& ks) {return !is_internal_keyspace(ks); })
);
}
virtual std::vector<sstring> get_all_keyspaces(data_dictionary::database db) const override {
return boost::copy_range<std::vector<sstring>>(unwrap(db).keyspaces | boost::adaptors::transformed([] (const keyspace& ks) { return ks.metadata->name(); }));
}
virtual std::vector<data_dictionary::table> get_tables(data_dictionary::database db) const override {
return boost::copy_range<std::vector<data_dictionary::table>>(unwrap(db).tables | boost::adaptors::transformed([this] (const table& ks) { return wrap(ks); }));
}
virtual std::optional<data_dictionary::table> try_find_table(data_dictionary::database db, std::string_view ks, std::string_view tab) const override {
auto& tables = unwrap(db).tables;
auto it = std::find_if(tables.begin(), tables.end(), [ks, tab] (const table& tbl) { return tbl.schema->ks_name() == ks && tbl.schema->cf_name() == tab; });
if (it == tables.end()) {
return {};
}
return wrap(*it);
}
virtual std::optional<data_dictionary::table> try_find_table(data_dictionary::database db, table_id id) const override {
auto& tables = unwrap(db).tables;
auto it = std::find_if(tables.begin(), tables.end(), [id] (const table& tbl) { return tbl.schema->id() == id; });
if (it == tables.end()) {
return {};
}
return wrap(*it);
}
virtual const secondary_index::secondary_index_manager& get_index_manager(data_dictionary::table t) const override {
return unwrap(t).secondary_idx_man;
}
virtual schema_ptr get_table_schema(data_dictionary::table t) const override {
return unwrap(t).schema;
}
virtual lw_shared_ptr<keyspace_metadata> get_keyspace_metadata(data_dictionary::keyspace ks) const override {
return unwrap(ks).metadata;
}
virtual bool is_internal(data_dictionary::keyspace ks) const override {
return is_system_keyspace(unwrap(ks).metadata->name());
}
virtual const locator::abstract_replication_strategy& get_replication_strategy(data_dictionary::keyspace ks) const override {
throw std::bad_function_call();
}
virtual const std::vector<view_ptr>& get_table_views(data_dictionary::table t) const override {
static const std::vector<view_ptr> empty;
return empty;
}
virtual sstring get_available_index_name(data_dictionary::database db, std::string_view ks_name, std::string_view table_name,
std::optional<sstring> index_name_root) const override {
throw std::bad_function_call();
}
virtual std::set<sstring> existing_index_names(data_dictionary::database db, std::string_view ks_name, std::string_view cf_to_exclude = {}) const override {
return {};
}
virtual schema_ptr find_indexed_table(data_dictionary::database db, std::string_view ks_name, std::string_view index_name) const override {
return {};
}
virtual schema_ptr get_cdc_base_table(data_dictionary::database db, const schema&) const override {
return {};
}
virtual const db::config& get_config(data_dictionary::database db) const override {
return unwrap(db).cfg;
}
virtual const db::extensions& get_extensions(data_dictionary::database db) const override {
return unwrap(db).extensions;
}
virtual const gms::feature_service& get_features(data_dictionary::database db) const override {
return unwrap(db).features;
}
virtual replica::database& real_database(data_dictionary::database db) const override {
throw std::bad_function_call();
}
};
class user_types_storage : public data_dictionary::user_types_storage {
database& _db;
public:
user_types_storage(database& db) noexcept : _db(db) {}
virtual const data_dictionary::user_types_metadata& get(const sstring& name) const override {
for (const auto& ks : _db.keyspaces) {
if (ks.metadata->name() == name) {
return ks.metadata->user_types();
}
}
throw data_dictionary::no_such_keyspace(name);
}
};
table::table(data_dictionary_impl& impl, keyspace& ks, schema_ptr schema) :
ks(ks), schema(std::move(schema)), secondary_idx_man(impl.wrap(*this))
{ }
sstring read_file(std::filesystem::path path) {
auto file = open_file_dma(path.native(), open_flags::ro).get();
auto fstream = make_file_input_stream(file);
return util::read_entire_stream_contiguous(fstream).get();
}
std::vector<schema_ptr> do_load_schemas(std::string_view schema_str) {
cql3::cql_stats cql_stats;
db::config cfg;
cfg.enable_cache(false);
cfg.volatile_system_keyspace_for_testing(true);
gms::feature_service feature_service(gms::feature_config_from_db_config(cfg));
feature_service.enable(feature_service.supported_feature_set()).get();
sharded<locator::shared_token_metadata> token_metadata;
utils::fb_utilities::set_broadcast_address(gms::inet_address("localhost"));
token_metadata.start([] () noexcept { return db::schema_tables::hold_merge_lock(); }, locator::token_metadata::config{}).get();
auto stop_token_metadata = deferred_stop(token_metadata);
data_dictionary_impl dd_impl;
database real_db(cfg, feature_service);
auto db = dd_impl.wrap(real_db);
// Mock system_schema keyspace to be able to parse modification statements
// against system_schema.dropped_columns.
real_db.keyspaces.emplace_back(make_lw_shared<keyspace_metadata>(
db::schema_tables::NAME,
"org.apache.cassandra.locator.LocalStrategy",
std::map<sstring, sstring>{},
false));
real_db.tables.emplace_back(dd_impl, real_db.keyspaces.back(), db::schema_tables::dropped_columns());
std::vector<schema_ptr> schemas;
auto find_or_create_keyspace = [&] (const sstring& name) -> data_dictionary::keyspace {
try {
return db.find_keyspace(name);
} catch (replica::no_such_keyspace&) {
// fall-though to below
}
auto raw_statement = cql3::query_processor::parse_statement(
fmt::format("CREATE KEYSPACE {} WITH replication = {{'class': 'SimpleStrategy', 'replication_factor': '1'}}", name));
auto prepared_statement = raw_statement->prepare(db, cql_stats);
auto* statement = prepared_statement->statement.get();
auto p = dynamic_cast<cql3::statements::create_keyspace_statement*>(statement);
assert(p);
real_db.keyspaces.emplace_back(p->get_keyspace_metadata(*token_metadata.local().get()));
return db.find_keyspace(name);
};
std::vector<std::unique_ptr<cql3::statements::raw::parsed_statement>> raw_statements;
try {
raw_statements = cql3::query_processor::parse_statements(schema_str);
} catch (...) {
throw std::runtime_error(format("tools:do_load_schemas(): failed to parse CQL statements: {}", std::current_exception()));
}
for (auto& raw_statement : raw_statements) {
auto cf_statement = dynamic_cast<cql3::statements::raw::cf_statement*>(raw_statement.get());
if (!cf_statement) {
continue; // we don't support any non-cf statements here
}
auto ks = find_or_create_keyspace(cf_statement->keyspace());
auto prepared_statement = cf_statement->prepare(db, cql_stats);
auto* statement = prepared_statement->statement.get();
if (auto p = dynamic_cast<cql3::statements::create_keyspace_statement*>(statement)) {
real_db.keyspaces.emplace_back(p->get_keyspace_metadata(*token_metadata.local().get()));
} else if (auto p = dynamic_cast<cql3::statements::create_type_statement*>(statement)) {
dd_impl.unwrap(ks).metadata->add_user_type(p->create_type(db));
} else if (auto p = dynamic_cast<cql3::statements::create_table_statement*>(statement)) {
schemas.push_back(p->get_cf_meta_data(db));
// CDC tables use a custom partitioner, which is not reflected when
// dumping the schema to schema.cql, so we have to manually set it here.
if (cdc::is_log_name(schemas.back()->cf_name())) {
schema_builder b(std::move(schemas.back()));
b.with_partitioner(cdc::cdc_partitioner::classname);
schemas.back() = b.build();
}
} else if (auto p = dynamic_cast<cql3::statements::update_statement*>(statement)) {
if (p->keyspace() != db::schema_tables::NAME && p->column_family() != db::schema_tables::DROPPED_COLUMNS) {
throw std::runtime_error(fmt::format("tools::do_load_schemas(): expected modification statement to be against {}.{}, but it is against {}.{}",
db::schema_tables::NAME, db::schema_tables::DROPPED_COLUMNS, p->keyspace(), p->column_family()));
}
auto schema = db::schema_tables::dropped_columns();
cql3::statements::modification_statement::json_cache_opt json_cache{};
cql3::update_parameters params(schema, cql3::query_options::DEFAULT, api::new_timestamp(), schema->default_time_to_live(), cql3::update_parameters::prefetch_data(schema));
auto pkeys = p->build_partition_keys(cql3::query_options::DEFAULT, json_cache);
auto ckranges = p->create_clustering_ranges(cql3::query_options::DEFAULT, json_cache);
auto updates = p->apply_updates(pkeys, ckranges, params, json_cache);
if (updates.size() != 1) {
throw std::runtime_error(fmt::format("tools::do_load_schemas(): expected one update per statement for {}.{}, got: {}",
db::schema_tables::NAME, db::schema_tables::DROPPED_COLUMNS, updates.size()));
}
auto& mut = updates.front();
if (!mut.partition().row_tombstones().empty()) {
throw std::runtime_error(fmt::format("tools::do_load_schemas(): expected only update against {}.{}, not deletes",
db::schema_tables::NAME, db::schema_tables::DROPPED_COLUMNS));
}
query::result_set rs(mut);
for (auto& row : rs.rows()) {
const auto keyspace_name = row.get_nonnull<sstring>("keyspace_name");
const auto table_name = row.get_nonnull<sstring>("table_name");
auto it = std::find_if(schemas.begin(), schemas.end(), [&] (schema_ptr s) {
return s->ks_name() == keyspace_name && s->cf_name() == table_name;
});
if (it == schemas.end()) {
throw std::runtime_error(fmt::format("tools::do_load_schemas(): failed applying update to {}.{}, the table it applies to is not found: {}.{}",
db::schema_tables::NAME, db::schema_tables::DROPPED_COLUMNS, keyspace_name, table_name));
}
auto name = row.get_nonnull<sstring>("column_name");
auto type = db::cql_type_parser::parse(keyspace_name, row.get_nonnull<sstring>("type"), user_types_storage(real_db));
auto time = row.get_nonnull<db_clock::time_point>("dropped_time");
*it = schema_builder(*it).without_column(std::move(name), std::move(type), time.time_since_epoch().count()).build();
}
} else {
throw std::runtime_error(fmt::format("tools::do_load_schemas(): expected statement to be one of (create keyspace, create type, create table), got: {}",
typeid(statement).name()));
}
}
return schemas;
}
struct sstable_manager_service {
db::nop_large_data_handler large_data_handler;
db::config dbcfg;
gms::feature_service feature_service;
cache_tracker tracker;
sstables::directory_semaphore dir_sem;
sstables::sstables_manager sst_man;
explicit sstable_manager_service()
: feature_service(gms::feature_config_from_db_config(dbcfg))
, dir_sem(1)
, sst_man(large_data_handler, dbcfg, feature_service, tracker, memory::stats().total_memory(), dir_sem) {
}
future<> stop() {
return sst_man.close();
}
};
mutation_opt read_schema_table_mutation(sharded<sstable_manager_service>& sst_man, std::filesystem::path schema_table_data_path,
std::function<schema_ptr()> schema_factory, reader_permit permit, std::string_view keyspace, std::vector<std::string_view> ck_strings) {
sharded<sstables::sstable_directory> sst_dirs;
sst_dirs.start(
sharded_parameter([&sst_man] { return std::ref(sst_man.local().sst_man); }),
sharded_parameter([&schema_factory] { return schema_factory(); }),
sharded_parameter([&] { return std::ref(schema_factory()->get_sharder()); }),
sharded_parameter([] { return make_lw_shared<const data_dictionary::storage_options>(); }),
schema_table_data_path.native(), sstables::sstable_state::normal,
sharded_parameter([] { return default_io_error_handler_gen(); })).get();
auto stop_sst_dirs = deferred_stop(sst_dirs);
auto sstable_open_infos = sst_dirs.map_reduce0(
[] (sstables::sstable_directory& sst_dir) -> future<std::vector<sstables::foreign_sstable_open_info>> {
co_await sst_dir.process_sstable_dir(sstables::sstable_directory::process_flags{ .sort_sstables_according_to_owner = false });
const auto& unsorted_ssts = sst_dir.get_unsorted_sstables();
std::vector<sstables::foreign_sstable_open_info> open_infos;
open_infos.reserve(unsorted_ssts.size());
for (auto& sst : unsorted_ssts) {
open_infos.push_back(co_await sst->get_open_info());
}
co_return open_infos;
},
std::vector<sstables::foreign_sstable_open_info>{},
[] (std::vector<sstables::foreign_sstable_open_info> a, std::vector<sstables::foreign_sstable_open_info> b) {
std::move(b.begin(), b.end(), std::back_inserter(a));
return a;
}).get();
auto schema_table_schema = schema_factory();
if (sstable_open_infos.empty()) {
return {};
}
std::vector<sstables::shared_sstable> sstables;
sstables.reserve(sstable_open_infos.size());
for (auto& open_info : sstable_open_infos) {
sstables.push_back(sst_dirs.local().load_foreign_sstable(open_info).get());
}
auto pk = partition_key::from_deeply_exploded(*schema_table_schema, {data_value(keyspace)});
auto dk = dht::decorate_key(*schema_table_schema, pk);
auto pr = dht::partition_range::make_singular(dk);
std::vector<data_value> raw_ck_values;
raw_ck_values.reserve(ck_strings.size());
for (const auto& ck_str : ck_strings) {
raw_ck_values.push_back(data_value(ck_str));
}
auto ck = clustering_key::from_deeply_exploded(*schema_table_schema, raw_ck_values);
auto cr = query::clustering_range::make({ck, true}, {ck, true});
auto ps = partition_slice_builder(*schema_table_schema)
.with_range(cr)
.build();
std::vector<flat_mutation_reader_v2> readers;
readers.reserve(sstables.size());
for (const auto& sst : sstables) {
readers.emplace_back(sst->make_reader(schema_table_schema, permit, pr, ps));
}
auto reader = make_combined_reader(schema_table_schema, permit, std::move(readers));
return read_mutation_from_flat_mutation_reader(reader).get();
}
class single_keyspace_user_types_storage : public data_dictionary::user_types_storage {
data_dictionary::user_types_metadata _utm;
public:
single_keyspace_user_types_storage(data_dictionary::user_types_metadata utm) : _utm(std::move(utm)) { }
virtual const data_dictionary::user_types_metadata& get(const sstring& ks) const override {
return _utm;
}
};
std::unordered_map<schema_ptr, std::string> get_schema_table_directories(std::filesystem::path scylla_data_path) {
const std::vector<schema_ptr> schemas{
db::schema_tables::types(),
db::schema_tables::tables(),
db::schema_tables::columns(),
db::schema_tables::view_virtual_columns(),
db::schema_tables::computed_columns(),
db::schema_tables::indexes(),
db::schema_tables::dropped_columns(),
db::schema_tables::scylla_tables()};
std::unordered_map<schema_ptr, std::string> schema_table_table_dir;
auto schema_tables_path = scylla_data_path / db::schema_tables::NAME;
auto schema_tables_dir = open_directory(schema_tables_path.native()).get();
schema_tables_dir.list_directory([&] (directory_entry de) -> future<> {
auto dash_pos = de.name.find_last_of('-');
auto table_name = de.name.substr(0, dash_pos);
auto it = boost::find_if(schemas, [&] (const schema_ptr& s) {
return s->cf_name() == table_name;
});
if (it != schemas.end()) {
if (!de.type) {
throw std::runtime_error(fmt::format("failed loading schema tables from {}: keyspace directory entry {} has unrecognized type", scylla_data_path.native(), de.name));
} else if (*de.type != directory_entry_type::directory) {
throw std::runtime_error(fmt::format("failed loading schema tables from {}: keyspace directory entry {} has unrecognized type {}", scylla_data_path.native(), de.name, static_cast<int>(*de.type)));
}
auto s = *it;
schema_table_table_dir[s] = de.name;
}
return make_ready_future<>();
}).done().get();
if (schema_table_table_dir.size() != schemas.size()) {
throw std::runtime_error(fmt::format("failed loading schema tables from {}: couldn't find table directory for all require schema tables", scylla_data_path.native()));
}
return schema_table_table_dir;
}
schema_ptr do_load_schema_from_schema_tables(std::filesystem::path scylla_data_path, std::string_view keyspace, std::string_view table) {
reader_concurrency_semaphore rcs_sem(reader_concurrency_semaphore::no_limits{}, __FUNCTION__);
auto stop_semaphore = deferred_stop(rcs_sem);
sharded<sstable_manager_service> sst_man;
sst_man.start().get();
auto stop_sst_man_service = deferred_stop(sst_man);
auto schema_table_table_dir = get_schema_table_directories(scylla_data_path);
auto schema_tables_path = scylla_data_path / db::schema_tables::NAME;
auto do_load = [&] (std::function<const schema_ptr()> schema_factory) {
auto s = schema_factory();
return read_schema_table_mutation(
sst_man,
schema_tables_path / schema_table_table_dir[s],
schema_factory,
rcs_sem.make_tracking_only_permit(s.get(), "schema_mutation", db::no_timeout, {}),
keyspace,
{table});
};
mutation_opt tables = do_load(db::schema_tables::tables);
mutation_opt columns = do_load(db::schema_tables::columns);
mutation_opt view_virtual_columns = do_load(db::schema_tables::view_virtual_columns);
mutation_opt computed_columns = do_load(db::schema_tables::computed_columns);
mutation_opt indexes = do_load(db::schema_tables::indexes);
mutation_opt dropped_columns = do_load(db::schema_tables::dropped_columns);
mutation_opt scylla_tables = do_load([] () { return db::schema_tables::scylla_tables(); });
if (!tables || !columns) {
throw std::runtime_error(fmt::format("Failed to find {}.{} in 'tables' and/or 'columns' schema tables", keyspace, table));
}
data_dictionary::user_types_metadata utm;
auto types_mut = read_schema_table_mutation(
sst_man,
schema_tables_path / schema_table_table_dir[db::schema_tables::types()],
db::schema_tables::types,
rcs_sem.make_tracking_only_permit(db::schema_tables::types().get(), "types_mutation", db::no_timeout, {}),
keyspace,
{});
if (types_mut) {
query::result_set result(*types_mut);
auto ks = make_lw_shared<keyspace_metadata>(keyspace, "org.apache.cassandra.locator.LocalStrategy", std::map<sstring, sstring>{}, false);
db::cql_type_parser::raw_builder ut_builder(*ks);
auto get_list = [] (const query::result_set_row& row, const char* name) {
return boost::copy_range<std::vector<sstring>>(
row.get_nonnull<const list_type_impl::native_type&>(name)
| boost::adaptors::transformed([] (const data_value& v) { return value_cast<sstring>(v); }));
};
for (const auto& row : result.rows()) {
const auto name = row.get_nonnull<sstring>("type_name");
const auto field_names = get_list(row, "field_names");
const auto field_types = get_list(row, "field_types");
ut_builder.add(name, field_names, field_types);
}
for (auto&& ut : ut_builder.build()) {
utm.add_type(std::move(ut));
}
}
db::config dbcfg;
auto user_type_storage = std::make_shared<single_keyspace_user_types_storage>(std::move(utm));
gms::feature_service features(gms::feature_config_from_db_config(dbcfg));
db::schema_ctxt ctxt(dbcfg, user_type_storage, features);
schema_mutations muts(std::move(*tables), std::move(*columns), std::move(view_virtual_columns), std::move(computed_columns), std::move(indexes),
std::move(dropped_columns), std::move(scylla_tables));
return db::schema_tables::create_table_from_mutations(ctxt, muts);
}
} // anonymous namespace
namespace tools {
future<std::vector<schema_ptr>> load_schemas(std::string_view schema_str) {
return async([schema_str] () mutable {
return do_load_schemas(schema_str);
});
}
future<schema_ptr> load_one_schema_from_file(std::filesystem::path path) {
return async([path] () mutable {
auto schemas = do_load_schemas(read_file(path));
if (schemas.size() != 1) {
throw std::runtime_error(fmt::format("Schema file {} expected to contain exactly 1 schema, actually has {}", path.native(), schemas.size()));
}
return std::move(schemas.front());
});
}
schema_ptr load_system_schema(std::string_view keyspace, std::string_view table) {
db::config cfg;
cfg.experimental_features.set(db::experimental_features_t::all());
const std::unordered_map<std::string_view, std::vector<schema_ptr>> schemas{
{db::schema_tables::NAME, db::schema_tables::all_tables(db::schema_features::full())},
{db::system_keyspace::NAME, db::system_keyspace::all_tables(cfg)},
{db::system_distributed_keyspace::NAME, db::system_distributed_keyspace::all_distributed_tables()},
{db::system_distributed_keyspace::NAME_EVERYWHERE, db::system_distributed_keyspace::all_everywhere_tables()},
};
auto ks_it = schemas.find(keyspace);
if (ks_it == schemas.end()) {
throw std::invalid_argument(fmt::format("unknown system keyspace: {}", keyspace));
}
auto tb_it = boost::find_if(ks_it->second, [&] (const schema_ptr& s) {
return s->cf_name() == table;
});
if (tb_it == ks_it->second.end()) {
throw std::invalid_argument(fmt::format("unknown table {} in system keyspace: {}", table, keyspace));
}
return *tb_it;
}
future<schema_ptr> load_schema_from_schema_tables(std::filesystem::path scylla_data_path, std::string_view keyspace, std::string_view table) {
return async([=] () mutable {
return do_load_schema_from_schema_tables(scylla_data_path, keyspace, table);
});
}
} // namespace tools