420 lines
15 KiB
C++
420 lines
15 KiB
C++
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Modified by Cloudius Systems.
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* Copyright 2015 Cloudius Systems.
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*/
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#include "message/messaging_service.hh"
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#include "streaming/stream_session.hh"
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#include "streaming/messages/stream_init_message.hh"
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#include "streaming/messages/prepare_message.hh"
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#include "streaming/messages/outgoing_file_message.hh"
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#include "streaming/messages/received_message.hh"
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#include "streaming/messages/retry_message.hh"
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#include "streaming/messages/complete_message.hh"
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#include "streaming/messages/session_failed_message.hh"
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#include "streaming/stream_result_future.hh"
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#include "mutation_reader.hh"
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#include "dht/i_partitioner.hh"
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#include "database.hh"
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namespace streaming {
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void stream_session::init_messaging_service_handler() {
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ms().register_handler(messaging_verb::STREAM_INIT_MESSAGE, [] (messages::stream_init_message msg, unsigned src_cpu_id) {
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auto dst_cpu_id = engine().cpu_id();
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return smp::submit_to(dst_cpu_id, [msg = std::move(msg), src_cpu_id, dst_cpu_id] () mutable {
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stream_result_future::init_receiving_side(msg.session_index, msg.plan_id,
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msg.description, msg.from, msg.keep_ss_table_level);
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return make_ready_future<unsigned>(dst_cpu_id);
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});
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});
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ms().register_handler(messaging_verb::PREPARE_MESSAGE, [] (messages::prepare_message msg, unsigned dst_cpu_id) {
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return smp::submit_to(dst_cpu_id, [msg = std::move(msg)] () mutable {
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// TODO: find session
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stream_session s;
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auto msg_ret = s.prepare(std::move(msg.requests), std::move(msg.summaries));
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return make_ready_future<messages::prepare_message>(std::move(msg_ret));
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});
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});
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ms().register_handler(messaging_verb::STREAM_MUTATION, [] (frozen_mutation fm, unsigned dst_cpu_id) {
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return smp::submit_to(dst_cpu_id, [fm = std::move(fm)] () mutable {
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auto cf_id = fm.column_family_id();
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auto& db = stream_session::get_local_db();
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auto& cf = db.find_column_family(cf_id);
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cf.apply(fm, db::replay_position(), &db);
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return make_ready_future<>();
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});
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});
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ms().register_handler(messaging_verb::RETRY_MESSAGE, [] (messages::retry_message msg, unsigned dst_cpu_id) {
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return smp::submit_to(dst_cpu_id, [msg = std::move(msg)] () mutable {
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// TODO
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return make_ready_future<>();
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});
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});
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ms().register_handler(messaging_verb::COMPLETE_MESSAGE, [] (messages::complete_message msg, unsigned dst_cpu_id) {
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return smp::submit_to(dst_cpu_id, [msg = std::move(msg)] () mutable {
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// TODO
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messages::complete_message msg_ret;
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return make_ready_future<messages::complete_message>(std::move(msg_ret));
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});
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});
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ms().register_handler(messaging_verb::SESSION_FAILED_MESSAGE, [] (messages::session_failed_message msg, unsigned dst_cpu_id) {
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smp::submit_to(dst_cpu_id, [msg = std::move(msg)] () mutable {
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// TODO
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}).then_wrapped([] (auto&& f) {
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try {
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f.get();
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} catch (...) {
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print("stream_session: SESSION_FAILED_MESSAGE error\n");
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}
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});
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return messaging_service::no_wait();
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});
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}
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distributed<stream_session::handler> stream_session::_handlers;
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distributed<database>* stream_session::_db;
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future<> stream_session::init_streaming_service(distributed<database>& db) {
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_db = &db;
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return _handlers.start().then([] {
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return _handlers.invoke_on_all([] (handler& h) {
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init_messaging_service_handler();
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});
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});
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}
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future<> stream_session::on_initialization_complete() {
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// send prepare message
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set_state(stream_session_state::PREPARING);
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auto prepare = messages::prepare_message();
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std::copy(_requests.begin(), _requests.end(), std::back_inserter(prepare.requests));
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for (auto& x : _transfers) {
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prepare.summaries.emplace_back(x.second.get_summary());
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}
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auto id = shard_id{this->peer, 0};
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ms().send_message<messages::prepare_message>(net::messaging_verb::PREPARE_MESSAGE, std::move(id),
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std::move(prepare), this->dst_cpu_id).then([this] (messages::prepare_message msg) {
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for (auto& request : msg.requests) {
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// always flush on stream request
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add_transfer_ranges(request.keyspace, request.ranges, request.column_families, true, request.repaired_at);
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}
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for (auto& summary : msg.summaries) {
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prepare_receiving(summary);
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}
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// if we don't need to prepare for receiving stream, start sending files immediately
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if (_requests.empty()) {
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start_streaming_files();
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}
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});
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}
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void stream_session::on_error() {
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#if 0
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//logger.error("[Stream #{}] Streaming error occurred", planId(), e);
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// send session failure message
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if (handler.is_outgoing_connected()) {
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handler.sendMessage(session_failed_message());
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}
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#endif
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// fail session
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close_session(stream_session_state::FAILED);
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}
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messages::prepare_message stream_session::prepare(std::vector<stream_request> requests, std::vector<stream_summary> summaries) {
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// prepare tasks
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set_state(stream_session_state::PREPARING);
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for (auto& request : requests) {
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// always flush on stream request
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add_transfer_ranges(request.keyspace, request.ranges, request.column_families, true, request.repaired_at);
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}
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for (auto& summary : summaries) {
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prepare_receiving(summary);
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}
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// send back prepare message if prepare message contains stream request
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messages::prepare_message prepare;
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if (!requests.empty()) {
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for (auto& x: _transfers) {
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auto& task = x.second;
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prepare.summaries.emplace_back(task.get_summary());
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}
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//handler.send_message(std::move(prepare));
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}
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// if there are files to stream
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if (!maybe_completed()) {
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start_streaming_files();
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}
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return prepare;
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}
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void stream_session::file_sent(const messages::file_message_header& header) {
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#if 0
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auto header_size = header.size();
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StreamingMetrics.totalOutgoingBytes.inc(headerSize);
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metrics.outgoingBytes.inc(headerSize);
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#endif
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// schedule timeout for receiving ACK
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auto it = _transfers.find(header.cf_id);
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if (it != _transfers.end()) {
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//task.scheduleTimeout(header.sequenceNumber, 12, TimeUnit.HOURS);
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}
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}
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void stream_session::receive(messages::incoming_file_message message) {
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#if 0
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auto header_size = message.header.size();
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StreamingMetrics.totalIncomingBytes.inc(headerSize);
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metrics.incomingBytes.inc(headerSize);
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#endif
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// send back file received message
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// handler.sendMessage(new ReceivedMessage(message.header.cfId, message.header.sequenceNumber));
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auto cf_id = message.header.cf_id;
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auto it = _receivers.find(cf_id);
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assert(it != _receivers.end());
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it->second.received(std::move(message));
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}
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void stream_session::progress(/* Descriptor desc */ progress_info::direction dir, long bytes, long total) {
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// auto progress = progress_info(peer, _index, /* desc.filenameFor(Component.DATA),*/ dir, bytes, total);
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// streamResult.handleProgress(progress);
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}
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void stream_session::received(UUID cf_id, int sequence_number) {
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auto it = _transfers.find(cf_id);
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if (it != _transfers.end()) {
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it->second.complete(sequence_number);
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}
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}
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void stream_session::retry(UUID cf_id, int sequence_number) {
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auto it = _transfers.find(cf_id);
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if (it != _transfers.end()) {
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//outgoing_file_message message = it->second.create_message_for_retry(sequence_number);
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//handler.sendMessage(message);
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}
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}
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void stream_session::complete() {
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if (_state == stream_session_state::WAIT_COMPLETE) {
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if (!_complete_sent) {
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//handler.sendMessage(new CompleteMessage());
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_complete_sent = true;
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}
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close_session(stream_session_state::COMPLETE);
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} else {
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set_state(stream_session_state::WAIT_COMPLETE);
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}
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}
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void stream_session::session_failed() {
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close_session(stream_session_state::FAILED);
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}
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session_info stream_session::get_session_info() {
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std::vector<stream_summary> receiving_summaries;
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for (auto& receiver : _receivers) {
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receiving_summaries.emplace_back(receiver.second.get_summary());
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}
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std::vector<stream_summary> transfer_summaries;
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for (auto& transfer : _transfers) {
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transfer_summaries.emplace_back(transfer.second.get_summary());
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}
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return session_info(peer, _index, connecting, std::move(receiving_summaries), std::move(transfer_summaries), _state);
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}
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void stream_session::task_completed(stream_receive_task& completed_task) {
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_receivers.erase(completed_task.cf_id);
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maybe_completed();
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}
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void stream_session::task_completed(stream_transfer_task& completed_task) {
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_transfers.erase(completed_task.cf_id);
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maybe_completed();
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}
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bool stream_session::maybe_completed() {
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bool completed = _receivers.empty() && _transfers.empty();
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if (completed) {
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if (_state == stream_session_state::WAIT_COMPLETE) {
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if (!_complete_sent) {
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//handler.sendMessage(new CompleteMessage());
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_complete_sent = true;
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}
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close_session(stream_session_state::COMPLETE);
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} else {
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// notify peer that this session is completed
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//handler.sendMessage(new CompleteMessage());
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_complete_sent = true;
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set_state(stream_session_state::WAIT_COMPLETE);
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}
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}
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return completed;
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}
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void stream_session::prepare_receiving(stream_summary& summary) {
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if (summary.files > 0) {
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// FIXME: handle when cf_id already exists
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_receivers.emplace(summary.cf_id, stream_receive_task(*this, summary.cf_id, summary.files, summary.total_size));
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}
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}
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void stream_session::start_streaming_files() {
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#if 0
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streamResult.handleSessionPrepared(this);
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state(State.STREAMING);
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for (StreamTransferTask task : transfers.values())
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{
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Collection<OutgoingFileMessage> messages = task.getFileMessages();
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if (messages.size() > 0)
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handler.sendMessages(messages);
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else
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taskCompleted(task); // there is no file to send
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}
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#endif
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set_state(stream_session_state::STREAMING);
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for (auto& x : _transfers) {
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stream_transfer_task& task = x.second;
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task.start();
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}
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}
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std::vector<column_family*> stream_session::get_column_family_stores(const sstring& keyspace, const std::vector<sstring>& column_families) {
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// if columnfamilies are not specified, we add all cf under the keyspace
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std::vector<column_family*> stores;
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auto& db = get_local_db();
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if (column_families.empty()) {
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abort();
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// FIXME: stores.addAll(Keyspace.open(keyspace).getColumnFamilyStores());
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} else {
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// TODO: We can move this to database class and use lw_shared_ptr<column_family> instead
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for (auto& cf_name : column_families) {
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auto& x = db.find_column_family(keyspace, cf_name);
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stores.push_back(&x);
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}
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}
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return stores;
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}
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void stream_session::add_transfer_ranges(sstring keyspace, std::vector<query::range<token>> ranges, std::vector<sstring> column_families, bool flush_tables, long repaired_at) {
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std::vector<stream_detail> sstable_details;
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auto cfs = get_column_family_stores(keyspace, column_families);
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if (flush_tables) {
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// FIXME: flushSSTables(stores);
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}
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for (auto& cf : cfs) {
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std::vector<mutation_reader> readers;
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std::vector<shared_ptr<query::range<ring_position>>> prs;
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auto cf_id = cf->schema()->id();
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for (auto& range : ranges) {
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auto pr = make_shared<query::range<ring_position>>(std::move(range).transform<ring_position>(
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[this] (token&& t) -> ring_position {
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return { std::move(t) };
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}));
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prs.push_back(pr);
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auto mr = cf->make_reader(*pr);
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readers.push_back(std::move(mr));
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}
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// Store this mutation_reader so we can send mutaions later
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mutation_reader mr = make_combined_reader(std::move(readers));
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// FIXME: sstable.estimatedKeysForRanges(ranges)
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long estimated_keys = 0;
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sstable_details.emplace_back(std::move(cf_id), std::move(prs), std::move(mr), estimated_keys, repaired_at);
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}
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add_transfer_files(std::move(sstable_details));
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}
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void stream_session::add_transfer_files(std::vector<stream_detail> sstable_details) {
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for (auto& detail : sstable_details) {
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#if 0
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if (details.sections.empty()) {
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// A reference was acquired on the sstable and we won't stream it
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// FIXME
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// details.sstable.releaseReference();
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continue;
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}
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#endif
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UUID cf_id = detail.cf_id;
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auto it = _transfers.find(cf_id);
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if (it == _transfers.end()) {
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it = _transfers.emplace(cf_id, stream_transfer_task(*this, cf_id)).first;
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}
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it->second.add_transfer_file(std::move(detail));
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}
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}
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void stream_session::close_session(stream_session_state final_state) {
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if (!_is_aborted) {
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_is_aborted = true;
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set_state(final_state);
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if (final_state == stream_session_state::FAILED) {
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for (auto& x : _transfers) {
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x.second.abort();
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}
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for (auto& x : _receivers) {
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x.second.abort();
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}
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}
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// Note that we shouldn't block on this close because this method is called on the handler
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// incoming thread (so we would deadlock).
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//handler.close();
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//streamResult.handleSessionComplete(this);
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}
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}
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void stream_session::start() {
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if (_requests.empty() && _transfers.empty()) {
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//logger.info("[Stream #{}] Session does not have any tasks.", planId());
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close_session(stream_session_state::COMPLETE);
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return;
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}
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// logger.info("[Stream #{}] Starting streaming to {}{}", plan_id(),
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// peer, peer == connecting ? "" : " through " + connecting);
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conn_handler.initiate().then([this] {
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return on_initialization_complete();
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}).then_wrapped([this] (auto&& f) {
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try {
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f.get();
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} catch (...) {
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this->on_error();
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}
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});
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}
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void stream_session::init(shared_ptr<stream_result_future> stream_result_) {
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_stream_result = stream_result_;
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}
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utils::UUID stream_session::plan_id() {
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return _stream_result ? _stream_result->plan_id : UUID();
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}
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sstring stream_session::description() {
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return _stream_result ? _stream_result->description : "";
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}
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} // namespace streaming
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