99a80050e3
There's nothing legacy about it so rename legacy_schema_tables to schema_tables. The naming comes from a Cassandra 3.x development branch which is not relevant for us in the near future. Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
567 lines
21 KiB
C++
567 lines
21 KiB
C++
/*
|
|
* Licensed to the Apache Software Foundation (ASF) under one
|
|
* or more contributor license agreements. See the NOTICE file
|
|
* distributed with this work for additional information
|
|
* regarding copyright ownership. The ASF licenses this file
|
|
* to you under the Apache License, Version 2.0 (the
|
|
* "License"); you may not use this file except in compliance
|
|
* with the License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
/*
|
|
* Copyright 2015 Cloudius Systems
|
|
*
|
|
* Modified by Cloudius Systems
|
|
*/
|
|
|
|
#include "service/migration_manager.hh"
|
|
|
|
#include "service/migration_listener.hh"
|
|
#include "message/messaging_service.hh"
|
|
#include "service/storage_service.hh"
|
|
#include "service/migration_task.hh"
|
|
#include "utils/runtime.hh"
|
|
#include "gms/gossiper.hh"
|
|
|
|
namespace service {
|
|
|
|
static logging::logger logger("migration_manager");
|
|
|
|
distributed<service::migration_manager> _the_migration_manager;
|
|
|
|
using namespace std::chrono_literals;
|
|
|
|
const std::chrono::milliseconds migration_manager::migration_delay = 60000ms;
|
|
|
|
migration_manager::migration_manager()
|
|
: _listeners{}
|
|
{
|
|
}
|
|
|
|
future<> migration_manager::stop()
|
|
{
|
|
return make_ready_future<>();
|
|
}
|
|
|
|
void migration_manager::register_listener(migration_listener* listener)
|
|
{
|
|
_listeners.emplace_back(listener);
|
|
}
|
|
|
|
void migration_manager::unregister_listener(migration_listener* listener)
|
|
{
|
|
_listeners.erase(std::remove(_listeners.begin(), _listeners.end(), listener), _listeners.end());
|
|
}
|
|
|
|
future<> migration_manager::schedule_schema_pull(const gms::inet_address& endpoint, const gms::endpoint_state& state)
|
|
{
|
|
const auto& value = state.get_application_state(gms::application_state::SCHEMA);
|
|
|
|
if (endpoint != utils::fb_utilities::get_broadcast_address() && value) {
|
|
return maybe_schedule_schema_pull(utils::UUID{value->value}, endpoint);
|
|
}
|
|
return make_ready_future<>();
|
|
}
|
|
|
|
/**
|
|
* If versions differ this node sends request with local migration list to the endpoint
|
|
* and expecting to receive a list of migrations to apply locally.
|
|
*/
|
|
future<> migration_manager::maybe_schedule_schema_pull(const utils::UUID& their_version, const gms::inet_address& endpoint)
|
|
{
|
|
auto& proxy = get_local_storage_proxy();
|
|
auto& db = proxy.get_db().local();
|
|
if (db.get_version() == their_version || !should_pull_schema_from(endpoint)) {
|
|
logger.debug("Not pulling schema because versions match or shouldPullSchemaFrom returned false");
|
|
return make_ready_future<>();
|
|
}
|
|
|
|
if (db.get_version() == database::empty_version || runtime::get_uptime() < migration_delay) {
|
|
// If we think we may be bootstrapping or have recently started, submit MigrationTask immediately
|
|
logger.debug("Submitting migration task for {}", endpoint);
|
|
return submit_migration_task(endpoint);
|
|
} else {
|
|
// Include a delay to make sure we have a chance to apply any changes being
|
|
// pushed out simultaneously. See CASSANDRA-5025
|
|
return sleep(migration_delay).then([this, &proxy, endpoint] {
|
|
// grab the latest version of the schema since it may have changed again since the initial scheduling
|
|
auto& gossiper = gms::get_local_gossiper();
|
|
auto ep_state = gossiper.get_endpoint_state_for_endpoint(endpoint);
|
|
if (!ep_state) {
|
|
logger.debug("epState vanished for {}, not submitting migration task", endpoint);
|
|
return make_ready_future<>();
|
|
}
|
|
const auto& value = ep_state->get_application_state(gms::application_state::SCHEMA);
|
|
utils::UUID current_version{value->value};
|
|
auto& db = proxy.get_db().local();
|
|
if (db.get_version() == current_version) {
|
|
logger.debug("not submitting migration task for {} because our versions match", endpoint);
|
|
return make_ready_future<>();
|
|
}
|
|
logger.debug("submitting migration task for {}", endpoint);
|
|
return submit_migration_task(endpoint);
|
|
});
|
|
}
|
|
}
|
|
|
|
future<> migration_manager::submit_migration_task(const gms::inet_address& endpoint)
|
|
{
|
|
return service::migration_task::run_may_throw(get_local_storage_proxy(), endpoint);
|
|
}
|
|
|
|
bool migration_manager::should_pull_schema_from(const gms::inet_address& endpoint)
|
|
{
|
|
/*
|
|
* Don't request schema from nodes with a differnt or unknonw major version (may have incompatible schema)
|
|
* Don't request schema from fat clients
|
|
*/
|
|
auto& ms = net::get_local_messaging_service();
|
|
return ms.knows_version(endpoint)
|
|
&& ms.get_raw_version(endpoint) == net::messaging_service::current_version
|
|
&& !gms::get_local_gossiper().is_gossip_only_member(endpoint);
|
|
}
|
|
|
|
future<> migration_manager::notify_create_keyspace(const lw_shared_ptr<keyspace_metadata>& ksm)
|
|
{
|
|
return get_migration_manager().invoke_on_all([name = ksm->name()] (auto&& mm) {
|
|
for (auto&& listener : mm._listeners) {
|
|
listener->on_create_keyspace(name);
|
|
}
|
|
});
|
|
}
|
|
|
|
future<> migration_manager::notify_create_column_family(schema_ptr cfm)
|
|
{
|
|
return get_migration_manager().invoke_on_all([ks_name = cfm->ks_name(), cf_name = cfm->cf_name()] (auto&& mm) {
|
|
for (auto&& listener : mm._listeners) {
|
|
listener->on_create_column_family(ks_name, cf_name);
|
|
}
|
|
});
|
|
}
|
|
|
|
#if 0
|
|
public void notifyCreateUserType(UserType ut)
|
|
{
|
|
for (IMigrationListener listener : listeners)
|
|
listener.onCreateUserType(ut.keyspace, ut.getNameAsString());
|
|
}
|
|
|
|
public void notifyCreateFunction(UDFunction udf)
|
|
{
|
|
for (IMigrationListener listener : listeners)
|
|
listener.onCreateFunction(udf.name().keyspace, udf.name().name);
|
|
}
|
|
|
|
public void notifyCreateAggregate(UDAggregate udf)
|
|
{
|
|
for (IMigrationListener listener : listeners)
|
|
listener.onCreateAggregate(udf.name().keyspace, udf.name().name);
|
|
}
|
|
#endif
|
|
|
|
future<> migration_manager::notify_update_keyspace(const lw_shared_ptr<keyspace_metadata>& ksm)
|
|
{
|
|
return get_migration_manager().invoke_on_all([name = ksm->name()] (auto&& mm) {
|
|
for (auto&& listener : mm._listeners) {
|
|
listener->on_update_keyspace(name);
|
|
}
|
|
});
|
|
}
|
|
|
|
future<> migration_manager::notify_update_column_family(schema_ptr cfm)
|
|
{
|
|
return get_migration_manager().invoke_on_all([ks_name = cfm->ks_name(), cf_name = cfm->cf_name()] (auto&& mm) {
|
|
for (auto&& listener : mm._listeners) {
|
|
listener->on_update_column_family(ks_name, cf_name);
|
|
}
|
|
});
|
|
}
|
|
|
|
#if 0
|
|
public void notifyUpdateUserType(UserType ut)
|
|
{
|
|
for (IMigrationListener listener : listeners)
|
|
listener.onUpdateUserType(ut.keyspace, ut.getNameAsString());
|
|
}
|
|
|
|
public void notifyUpdateFunction(UDFunction udf)
|
|
{
|
|
for (IMigrationListener listener : listeners)
|
|
listener.onUpdateFunction(udf.name().keyspace, udf.name().name);
|
|
}
|
|
|
|
public void notifyUpdateAggregate(UDAggregate udf)
|
|
{
|
|
for (IMigrationListener listener : listeners)
|
|
listener.onUpdateAggregate(udf.name().keyspace, udf.name().name);
|
|
}
|
|
#endif
|
|
|
|
future<> migration_manager::notify_drop_keyspace(const lw_shared_ptr<keyspace_metadata>& ksm)
|
|
{
|
|
return get_migration_manager().invoke_on_all([name = ksm->name()] (auto&& mm) {
|
|
for (auto&& listener : mm._listeners) {
|
|
listener->on_drop_keyspace(name);
|
|
}
|
|
});
|
|
}
|
|
|
|
future<> migration_manager::notify_drop_column_family(schema_ptr cfm)
|
|
{
|
|
return get_migration_manager().invoke_on_all([ks_name = cfm->ks_name(), cf_name = cfm->cf_name()] (auto&& mm) {
|
|
for (auto&& listener : mm._listeners) {
|
|
listener->on_drop_column_family(ks_name, cf_name);
|
|
}
|
|
});
|
|
}
|
|
|
|
#if 0
|
|
public void notifyDropUserType(UserType ut)
|
|
{
|
|
for (IMigrationListener listener : listeners)
|
|
listener.onDropUserType(ut.keyspace, ut.getNameAsString());
|
|
}
|
|
|
|
public void notifyDropFunction(UDFunction udf)
|
|
{
|
|
for (IMigrationListener listener : listeners)
|
|
listener.onDropFunction(udf.name().keyspace, udf.name().name);
|
|
}
|
|
|
|
public void notifyDropAggregate(UDAggregate udf)
|
|
{
|
|
for (IMigrationListener listener : listeners)
|
|
listener.onDropAggregate(udf.name().keyspace, udf.name().name);
|
|
}
|
|
#endif
|
|
|
|
future<>migration_manager::announce_new_keyspace(lw_shared_ptr<keyspace_metadata> ksm, bool announce_locally)
|
|
{
|
|
return announce_new_keyspace(ksm, db_clock::now_in_usecs(), announce_locally);
|
|
}
|
|
|
|
future<> migration_manager::announce_new_keyspace(lw_shared_ptr<keyspace_metadata> ksm, api::timestamp_type timestamp, bool announce_locally)
|
|
{
|
|
#if 0
|
|
ksm.validate();
|
|
#endif
|
|
auto& proxy = get_local_storage_proxy();
|
|
if (proxy.get_db().local().has_keyspace(ksm->name())) {
|
|
throw exceptions::already_exists_exception{ksm->name()};
|
|
}
|
|
logger.info("Create new Keyspace: {}", ksm->name());
|
|
auto mutations = db::schema_tables::make_create_keyspace_mutations(ksm, timestamp);
|
|
return announce(std::move(mutations), announce_locally);
|
|
}
|
|
|
|
future<> migration_manager::announce_new_column_family(schema_ptr cfm, bool announce_locally) {
|
|
#if 0
|
|
cfm.validate();
|
|
#endif
|
|
try {
|
|
auto& db = get_local_storage_proxy().get_db().local();
|
|
auto&& keyspace = db.find_keyspace(cfm->ks_name());
|
|
if (db.has_schema(cfm->ks_name(), cfm->cf_name())) {
|
|
throw exceptions::already_exists_exception(cfm->ks_name(), cfm->cf_name());
|
|
}
|
|
logger.info("Create new table: {}", cfm->cf_name());
|
|
auto mutations = db::schema_tables::make_create_table_mutations(keyspace.metadata(), cfm, db_clock::now_in_usecs());
|
|
return announce(std::move(mutations), announce_locally);
|
|
} catch (const no_such_keyspace& e) {
|
|
throw exceptions::configuration_exception(sprint("Cannot add table '%s' to non existing keyspace '%s'.", cfm->cf_name(), cfm->ks_name()));
|
|
}
|
|
}
|
|
|
|
future<> migration_manager::announce_column_family_update(schema_ptr cfm, bool from_thrift, bool announce_locally) {
|
|
warn(unimplemented::cause::MIGRATIONS);
|
|
return make_ready_future<>();
|
|
#if 0
|
|
cfm.validate();
|
|
|
|
CFMetaData oldCfm = Schema.instance.getCFMetaData(cfm.ksName, cfm.cfName);
|
|
if (oldCfm == null)
|
|
throw new ConfigurationException(String.format("Cannot update non existing table '%s' in keyspace '%s'.", cfm.cfName, cfm.ksName));
|
|
KSMetaData ksm = Schema.instance.getKSMetaData(cfm.ksName);
|
|
|
|
oldCfm.validateCompatility(cfm);
|
|
|
|
logger.info(String.format("Update table '%s/%s' From %s To %s", cfm.ksName, cfm.cfName, oldCfm, cfm));
|
|
announce(LegacySchemaTables.makeUpdateTableMutation(ksm, oldCfm, cfm, FBUtilities.timestampMicros(), fromThrift), announceLocally);
|
|
#endif
|
|
}
|
|
|
|
#if 0
|
|
public static void announceNewType(UserType newType, boolean announceLocally)
|
|
{
|
|
KSMetaData ksm = Schema.instance.getKSMetaData(newType.keyspace);
|
|
announce(LegacySchemaTables.makeCreateTypeMutation(ksm, newType, FBUtilities.timestampMicros()), announceLocally);
|
|
}
|
|
|
|
public static void announceNewFunction(UDFunction udf, boolean announceLocally)
|
|
{
|
|
logger.info(String.format("Create scalar function '%s'", udf.name()));
|
|
KSMetaData ksm = Schema.instance.getKSMetaData(udf.name().keyspace);
|
|
announce(LegacySchemaTables.makeCreateFunctionMutation(ksm, udf, FBUtilities.timestampMicros()), announceLocally);
|
|
}
|
|
|
|
public static void announceNewAggregate(UDAggregate udf, boolean announceLocally)
|
|
{
|
|
logger.info(String.format("Create aggregate function '%s'", udf.name()));
|
|
KSMetaData ksm = Schema.instance.getKSMetaData(udf.name().keyspace);
|
|
announce(LegacySchemaTables.makeCreateAggregateMutation(ksm, udf, FBUtilities.timestampMicros()), announceLocally);
|
|
}
|
|
|
|
public static void announceKeyspaceUpdate(KSMetaData ksm) throws ConfigurationException
|
|
{
|
|
announceKeyspaceUpdate(ksm, false);
|
|
}
|
|
|
|
public static void announceKeyspaceUpdate(KSMetaData ksm, boolean announceLocally) throws ConfigurationException
|
|
{
|
|
ksm.validate();
|
|
|
|
KSMetaData oldKsm = Schema.instance.getKSMetaData(ksm.name);
|
|
if (oldKsm == null)
|
|
throw new ConfigurationException(String.format("Cannot update non existing keyspace '%s'.", ksm.name));
|
|
|
|
logger.info(String.format("Update Keyspace '%s' From %s To %s", ksm.name, oldKsm, ksm));
|
|
announce(LegacySchemaTables.makeCreateKeyspaceMutation(ksm, FBUtilities.timestampMicros()), announceLocally);
|
|
}
|
|
|
|
public static void announceColumnFamilyUpdate(CFMetaData cfm, boolean fromThrift) throws ConfigurationException
|
|
{
|
|
announceColumnFamilyUpdate(cfm, fromThrift, false);
|
|
}
|
|
|
|
public static void announceColumnFamilyUpdate(CFMetaData cfm, boolean fromThrift, boolean announceLocally) throws ConfigurationException
|
|
{
|
|
cfm.validate();
|
|
|
|
CFMetaData oldCfm = Schema.instance.getCFMetaData(cfm.ksName, cfm.cfName);
|
|
if (oldCfm == null)
|
|
throw new ConfigurationException(String.format("Cannot update non existing table '%s' in keyspace '%s'.", cfm.cfName, cfm.ksName));
|
|
KSMetaData ksm = Schema.instance.getKSMetaData(cfm.ksName);
|
|
|
|
oldCfm.validateCompatility(cfm);
|
|
|
|
logger.info(String.format("Update table '%s/%s' From %s To %s", cfm.ksName, cfm.cfName, oldCfm, cfm));
|
|
announce(LegacySchemaTables.makeUpdateTableMutation(ksm, oldCfm, cfm, FBUtilities.timestampMicros(), fromThrift), announceLocally);
|
|
}
|
|
|
|
public static void announceTypeUpdate(UserType updatedType, boolean announceLocally)
|
|
{
|
|
announceNewType(updatedType, announceLocally);
|
|
}
|
|
#endif
|
|
|
|
future<> migration_manager::announce_keyspace_drop(const sstring& ks_name, bool announce_locally)
|
|
{
|
|
try {
|
|
auto& db = get_local_storage_proxy().get_db().local();
|
|
/*auto&& keyspace = */db.find_keyspace(ks_name);
|
|
#if 0
|
|
logger.info(String.format("Drop Keyspace '%s'", oldKsm.name));
|
|
announce(LegacySchemaTables.makeDropKeyspaceMutation(oldKsm, FBUtilities.timestampMicros()), announceLocally);
|
|
#endif
|
|
// FIXME
|
|
throw std::runtime_error("not implemented");
|
|
} catch (const no_such_keyspace& e) {
|
|
throw exceptions::configuration_exception(sprint("Cannot drop non existing keyspace '%s'.", ks_name));
|
|
}
|
|
}
|
|
|
|
future<> migration_manager::announce_column_family_drop(const sstring& ks_name,
|
|
const sstring& cf_name,
|
|
bool announce_locally)
|
|
{
|
|
try {
|
|
auto& db = get_local_storage_proxy().get_db().local();
|
|
/*auto&& cfm = */db.find_schema(ks_name, cf_name);
|
|
/*auto&& ksm = */db.find_keyspace(ks_name);
|
|
#if 0
|
|
logger.info(String.format("Drop table '%s/%s'", oldCfm.ksName, oldCfm.cfName));
|
|
announce(LegacySchemaTables.makeDropTableMutation(ksm, oldCfm, FBUtilities.timestampMicros()), announceLocally);
|
|
#endif
|
|
// FIXME
|
|
throw std::runtime_error("not implemented");
|
|
} catch (const no_such_column_family& e) {
|
|
throw exceptions::configuration_exception(sprint("Cannot drop non existing table '%s' in keyspace '%s'.", cf_name, ks_name));
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
public static void announceTypeDrop(UserType droppedType)
|
|
{
|
|
announceTypeDrop(droppedType, false);
|
|
}
|
|
|
|
public static void announceTypeDrop(UserType droppedType, boolean announceLocally)
|
|
{
|
|
KSMetaData ksm = Schema.instance.getKSMetaData(droppedType.keyspace);
|
|
announce(LegacySchemaTables.dropTypeFromSchemaMutation(ksm, droppedType, FBUtilities.timestampMicros()), announceLocally);
|
|
}
|
|
|
|
public static void announceFunctionDrop(UDFunction udf, boolean announceLocally)
|
|
{
|
|
logger.info(String.format("Drop scalar function overload '%s' args '%s'", udf.name(), udf.argTypes()));
|
|
KSMetaData ksm = Schema.instance.getKSMetaData(udf.name().keyspace);
|
|
announce(LegacySchemaTables.makeDropFunctionMutation(ksm, udf, FBUtilities.timestampMicros()), announceLocally);
|
|
}
|
|
|
|
public static void announceAggregateDrop(UDAggregate udf, boolean announceLocally)
|
|
{
|
|
logger.info(String.format("Drop aggregate function overload '%s' args '%s'", udf.name(), udf.argTypes()));
|
|
KSMetaData ksm = Schema.instance.getKSMetaData(udf.name().keyspace);
|
|
announce(LegacySchemaTables.makeDropAggregateMutation(ksm, udf, FBUtilities.timestampMicros()), announceLocally);
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* actively announce a new version to active hosts via rpc
|
|
* @param schema The schema mutation to be applied
|
|
*/
|
|
future<> migration_manager::announce(mutation schema, bool announce_locally)
|
|
{
|
|
std::vector<mutation> mutations;
|
|
mutations.emplace_back(std::move(schema));
|
|
return announce(std::move(mutations), announce_locally);
|
|
}
|
|
|
|
future<> migration_manager::announce(std::vector<mutation> mutations, bool announce_locally)
|
|
{
|
|
if (announce_locally) {
|
|
return db::schema_tables::merge_schema(get_local_storage_proxy(), std::move(mutations), false);
|
|
} else {
|
|
return announce(std::move(mutations));
|
|
}
|
|
}
|
|
|
|
future<> migration_manager::push_schema_mutation(const gms::inet_address& endpoint, const std::vector<mutation>& schema)
|
|
{
|
|
net::messaging_service::shard_id id{endpoint, 0};
|
|
auto fm = std::vector<frozen_mutation>(schema.begin(), schema.end());
|
|
return net::get_local_messaging_service().send_definitions_update(id, std::move(fm));
|
|
}
|
|
|
|
// Returns a future on the local application of the schema
|
|
future<> migration_manager::announce(std::vector<mutation> schema)
|
|
{
|
|
return gms::get_live_members().then([schema = std::move(schema)](std::set<gms::inet_address> live_members) {
|
|
return do_with(std::move(schema), [live_members] (auto&& schema) {
|
|
return parallel_for_each(live_members.begin(), live_members.end(), [&schema] (auto& endpoint) {
|
|
// only push schema to nodes with known and equal versions
|
|
if (endpoint != utils::fb_utilities::get_broadcast_address() &&
|
|
net::get_local_messaging_service().knows_version(endpoint) &&
|
|
net::get_local_messaging_service().get_raw_version(endpoint) == net::messaging_service::current_version) {
|
|
return push_schema_mutation(endpoint, schema);
|
|
} else {
|
|
return make_ready_future<>();
|
|
}
|
|
}).then_wrapped([] (future<> f) {
|
|
try {
|
|
f.get();
|
|
} catch (...) {
|
|
return make_exception_future<>(std::current_exception());
|
|
}
|
|
return make_ready_future<>();
|
|
}).then([&schema] {
|
|
return db::schema_tables::merge_schema(get_local_storage_proxy(), std::move(schema));
|
|
});
|
|
});
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Announce my version passively over gossip.
|
|
* Used to notify nodes as they arrive in the cluster.
|
|
*
|
|
* @param version The schema version to announce
|
|
*/
|
|
future<> migration_manager::passive_announce(utils::UUID version)
|
|
{
|
|
return gms::get_gossiper().invoke_on(0, [version] (auto&& gossiper) {
|
|
auto& ss = service::get_local_storage_service();
|
|
gossiper.add_local_application_state(gms::application_state::SCHEMA, ss.value_factory.schema(version));
|
|
logger.debug("Gossiping my schema version {}", version);
|
|
return make_ready_future<>();
|
|
});
|
|
}
|
|
|
|
#if 0
|
|
/**
|
|
* Clear all locally stored schema information and reset schema to initial state.
|
|
* Called by user (via JMX) who wants to get rid of schema disagreement.
|
|
*
|
|
* @throws IOException if schema tables truncation fails
|
|
*/
|
|
public static void resetLocalSchema() throws IOException
|
|
{
|
|
logger.info("Starting local schema reset...");
|
|
|
|
logger.debug("Truncating schema tables...");
|
|
|
|
LegacySchemaTables.truncateSchemaTables();
|
|
|
|
logger.debug("Clearing local schema keyspace definitions...");
|
|
|
|
Schema.instance.clear();
|
|
|
|
Set<InetAddress> liveEndpoints = Gossiper.instance.getLiveMembers();
|
|
liveEndpoints.remove(FBUtilities.getBroadcastAddress());
|
|
|
|
// force migration if there are nodes around
|
|
for (InetAddress node : liveEndpoints)
|
|
{
|
|
if (shouldPullSchemaFrom(node))
|
|
{
|
|
logger.debug("Requesting schema from {}", node);
|
|
FBUtilities.waitOnFuture(submitMigrationTask(node));
|
|
break;
|
|
}
|
|
}
|
|
|
|
logger.info("Local schema reset is complete.");
|
|
}
|
|
|
|
public static class MigrationsSerializer implements IVersionedSerializer<Collection<Mutation>>
|
|
{
|
|
public static MigrationsSerializer instance = new MigrationsSerializer();
|
|
|
|
public void serialize(Collection<Mutation> schema, DataOutputPlus out, int version) throws IOException
|
|
{
|
|
out.writeInt(schema.size());
|
|
for (Mutation mutation : schema)
|
|
Mutation.serializer.serialize(mutation, out, version);
|
|
}
|
|
|
|
public Collection<Mutation> deserialize(DataInput in, int version) throws IOException
|
|
{
|
|
int count = in.readInt();
|
|
Collection<Mutation> schema = new ArrayList<>(count);
|
|
|
|
for (int i = 0; i < count; i++)
|
|
schema.add(Mutation.serializer.deserialize(in, version));
|
|
|
|
return schema;
|
|
}
|
|
|
|
public long serializedSize(Collection<Mutation> schema, int version)
|
|
{
|
|
int size = TypeSizes.NATIVE.sizeof(schema.size());
|
|
for (Mutation mutation : schema)
|
|
size += Mutation.serializer.serializedSize(mutation, version);
|
|
return size;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
}
|