a664ac7ba5
`announce` now takes a `group0_guard` by value. `group0_guard` can only be obtained through `migration_manager::start_group0_operation` and moved, it cannot be constructed outside `migration_manager`. The guard will be a method of ensuring linearizability for group 0 operations.
115 lines
3.9 KiB
C++
115 lines
3.9 KiB
C++
/*
|
|
* Copyright (C) 2017-present ScyllaDB
|
|
*/
|
|
|
|
/*
|
|
* SPDX-License-Identifier: AGPL-3.0-or-later
|
|
*/
|
|
|
|
#include <seastar/core/coroutine.hh>
|
|
#include "auth/common.hh"
|
|
|
|
#include <seastar/core/shared_ptr.hh>
|
|
|
|
#include "cql3/query_processor.hh"
|
|
#include "cql3/statements/create_table_statement.hh"
|
|
#include "replica/database.hh"
|
|
#include "schema_builder.hh"
|
|
#include "service/migration_manager.hh"
|
|
#include "timeout_config.hh"
|
|
|
|
namespace auth {
|
|
|
|
namespace meta {
|
|
|
|
constinit const std::string_view AUTH_KS("system_auth");
|
|
constinit const std::string_view USERS_CF("users");
|
|
constinit const std::string_view AUTH_PACKAGE_NAME("org.apache.cassandra.auth.");
|
|
|
|
}
|
|
|
|
static logging::logger auth_log("auth");
|
|
|
|
// Func must support being invoked more than once.
|
|
future<> do_after_system_ready(seastar::abort_source& as, seastar::noncopyable_function<future<>()> func) {
|
|
struct empty_state { };
|
|
return exponential_backoff_retry::do_until_value(1s, 1min, as, [func = std::move(func)] {
|
|
return func().then_wrapped([] (auto&& f) -> std::optional<empty_state> {
|
|
if (f.failed()) {
|
|
auth_log.debug("Auth task failed with error, rescheduling: {}", f.get_exception());
|
|
return { };
|
|
}
|
|
return { empty_state() };
|
|
});
|
|
}).discard_result();
|
|
}
|
|
|
|
static future<> create_metadata_table_if_missing_impl(
|
|
std::string_view table_name,
|
|
cql3::query_processor& qp,
|
|
std::string_view cql,
|
|
::service::migration_manager& mm) {
|
|
assert(this_shard_id() == 0); // once_among_shards makes sure a function is executed on shard 0 only
|
|
|
|
auto db = qp.db();
|
|
auto parsed_statement = cql3::query_processor::parse_statement(cql);
|
|
auto& parsed_cf_statement = static_cast<cql3::statements::raw::cf_statement&>(*parsed_statement);
|
|
|
|
parsed_cf_statement.prepare_keyspace(meta::AUTH_KS);
|
|
|
|
auto statement = static_pointer_cast<cql3::statements::create_table_statement>(
|
|
parsed_cf_statement.prepare(db, qp.get_cql_stats())->statement);
|
|
|
|
const auto schema = statement->get_cf_meta_data(qp.db());
|
|
const auto uuid = generate_legacy_id(schema->ks_name(), schema->cf_name());
|
|
|
|
schema_builder b(schema);
|
|
b.set_uuid(uuid);
|
|
schema_ptr table = b.build();
|
|
|
|
if (!db.has_schema(table->ks_name(), table->cf_name())) {
|
|
auto group0_guard = co_await mm.start_group0_operation();
|
|
auto ts = group0_guard.write_timestamp();
|
|
try {
|
|
co_return co_await mm.announce(co_await mm.prepare_new_column_family_announcement(table, ts), std::move(group0_guard));
|
|
} catch (exceptions::already_exists_exception&) {}
|
|
}
|
|
}
|
|
|
|
future<> create_metadata_table_if_missing(
|
|
std::string_view table_name,
|
|
cql3::query_processor& qp,
|
|
std::string_view cql,
|
|
::service::migration_manager& mm) noexcept {
|
|
return futurize_invoke(create_metadata_table_if_missing_impl, table_name, qp, cql, mm);
|
|
}
|
|
|
|
future<> wait_for_schema_agreement(::service::migration_manager& mm, const replica::database& db, seastar::abort_source& as) {
|
|
static const auto pause = [] { return sleep(std::chrono::milliseconds(500)); };
|
|
|
|
return do_until([&db, &as] {
|
|
as.check();
|
|
return db.get_version() != replica::database::empty_version;
|
|
}, pause).then([&mm, &as] {
|
|
return do_until([&mm, &as] {
|
|
as.check();
|
|
return mm.have_schema_agreement();
|
|
}, pause);
|
|
});
|
|
}
|
|
|
|
::service::query_state& internal_distributed_query_state() noexcept {
|
|
#ifdef DEBUG
|
|
// Give the much slower debug tests more headroom for completing auth queries.
|
|
static const auto t = 30s;
|
|
#else
|
|
static const auto t = 5s;
|
|
#endif
|
|
static const timeout_config tc{t, t, t, t, t, t, t};
|
|
static thread_local ::service::client_state cs(::service::client_state::internal_tag{}, tc);
|
|
static thread_local ::service::query_state qs(cs, empty_service_permit());
|
|
return qs;
|
|
}
|
|
|
|
}
|