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scylladb/streaming/stream_session.cc
Asias He b8158dd65d streaming: Get rid of the keep alive timer in streaming 
There is no guarantee that rpc streaming makes progress in some time
period. Remove the keep alive timer in streaming to avoid killing the
session when the rpc streaming is just slow.

The keep alive timer is used to close the session in the following case:

n2 (the rpc streaming sender) streams to n1 (the rpc streaming receiver)
kill -9 n2

We need this because we do not kill the session when gossip think a node
is down, because we think the node down might only be temporary
and it is a waste to drop the previous work that has done especially
when the stream session takes long time.

Since in range_streamer, we do not stream all data in a single stream
session, we stream 10% of the data per time, and we have retry logic.
I think it is fine to kill a stream session when gossip thinks a node is
down. This patch changes to close all stream session with the node that
gossip think it is down.
Message-Id: <bdbb9486a533eee25fcaf4a23a946629ba946537.1551773823.git.asias@scylladb.com>
2019-03-12 12:20:28 +01:00

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/*
* 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.
*
* Modified by ScyllaDB
* Copyright (C) 2015 ScyllaDB
*/
/*
* This file is part of Scylla.
*
* Scylla is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Scylla is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
*/
#include "log.hh"
#include "message/messaging_service.hh"
#include "streaming/stream_session.hh"
#include "streaming/prepare_message.hh"
#include "streaming/stream_result_future.hh"
#include "streaming/stream_manager.hh"
#include "mutation_reader.hh"
#include "dht/i_partitioner.hh"
#include "database.hh"
#include "utils/fb_utilities.hh"
#include "streaming/stream_plan.hh"
#include <seastar/core/sleep.hh>
#include "service/storage_service.hh"
#include <seastar/core/thread.hh>
#include "cql3/query_processor.hh"
#include "streaming/stream_state.hh"
#include "streaming/stream_session_state.hh"
#include "streaming/stream_exception.hh"
#include "service/storage_proxy.hh"
#include "service/priority_manager.hh"
#include "query-request.hh"
#include "schema_registry.hh"
#include "multishard_writer.hh"
#include "sstables/sstables.hh"
#include "db/system_keyspace.hh"
#include "db/view/view_update_checks.hh"
#include <boost/algorithm/cxx11/any_of.hpp>
#include <boost/range/adaptor/map.hpp>
#include "../db/view/view_update_generator.hh"
namespace streaming {
logging::logger sslog("stream_session");
static auto get_stream_result_future(utils::UUID plan_id) {
auto& sm = get_local_stream_manager();
auto f = sm.get_sending_stream(plan_id);
if (!f) {
f = sm.get_receiving_stream(plan_id);
}
return f;
}
static auto get_session(utils::UUID plan_id, gms::inet_address from, const char* verb, std::optional<utils::UUID> cf_id = {}) {
if (cf_id) {
sslog.debug("[Stream #{}] GOT {} from {}: cf_id={}", plan_id, verb, from, *cf_id);
} else {
sslog.debug("[Stream #{}] GOT {} from {}", plan_id, verb, from);
}
auto sr = get_stream_result_future(plan_id);
if (!sr) {
auto err = format("[Stream #{}] GOT {} from {}: Can not find stream_manager", plan_id, verb, from);
sslog.debug(err.c_str());
throw std::runtime_error(err);
}
auto coordinator = sr->get_coordinator();
if (!coordinator) {
auto err = format("[Stream #{}] GOT {} from {}: Can not find coordinator", plan_id, verb, from);
sslog.debug(err.c_str());
throw std::runtime_error(err);
}
return coordinator->get_or_create_session(from);
}
void stream_session::init_messaging_service_handler() {
ms().register_prepare_message([] (const rpc::client_info& cinfo, prepare_message msg, UUID plan_id, sstring description, rpc::optional<stream_reason> reason_opt) {
const auto& src_cpu_id = cinfo.retrieve_auxiliary<uint32_t>("src_cpu_id");
const auto& from = cinfo.retrieve_auxiliary<gms::inet_address>("baddr");
auto dst_cpu_id = engine().cpu_id();
auto reason = reason_opt ? *reason_opt : stream_reason::unspecified;
return smp::submit_to(dst_cpu_id, [msg = std::move(msg), plan_id, description = std::move(description), from, src_cpu_id, dst_cpu_id, reason] () mutable {
auto sr = stream_result_future::init_receiving_side(plan_id, description, from);
auto session = get_session(plan_id, from, "PREPARE_MESSAGE");
session->init(sr);
session->dst_cpu_id = src_cpu_id;
session->set_reason(reason);
return session->prepare(std::move(msg.requests), std::move(msg.summaries));
});
});
ms().register_prepare_done_message([] (const rpc::client_info& cinfo, UUID plan_id, unsigned dst_cpu_id) {
const auto& from = cinfo.retrieve_auxiliary<gms::inet_address>("baddr");
return smp::submit_to(dst_cpu_id, [plan_id, from] () mutable {
auto session = get_session(plan_id, from, "PREPARE_DONE_MESSAGE");
session->follower_start_sent();
return make_ready_future<>();
});
});
ms().register_stream_mutation([] (const rpc::client_info& cinfo, UUID plan_id, frozen_mutation fm, unsigned dst_cpu_id, rpc::optional<bool> fragmented_opt, rpc::optional<stream_reason> reason_opt) {
auto from = netw::messaging_service::get_source(cinfo);
auto src_cpu_id = from.cpu_id;
auto fragmented = fragmented_opt && *fragmented_opt;
auto reason = reason_opt ? *reason_opt: stream_reason::unspecified;
sslog.trace("Got stream_mutation from {} reason {}", from, int(reason));
return smp::submit_to(src_cpu_id % smp::count, [fm = std::move(fm), plan_id, from, fragmented] () mutable {
return do_with(std::move(fm), [plan_id, from, fragmented] (const auto& fm) {
auto fm_size = fm.representation().size();
get_local_stream_manager().update_progress(plan_id, from.addr, progress_info::direction::IN, fm_size);
return service::get_schema_for_write(fm.schema_version(), from).then([plan_id, from, &fm, fragmented] (schema_ptr s) {
auto cf_id = fm.column_family_id();
sslog.debug("[Stream #{}] GOT STREAM_MUTATION from {}: cf_id={}", plan_id, from.addr, cf_id);
auto& db = service::get_local_storage_proxy().get_db().local();
if (!db.column_family_exists(cf_id)) {
sslog.warn("[Stream #{}] STREAM_MUTATION from {}: cf_id={} is missing, assume the table is dropped",
plan_id, from.addr, cf_id);
return make_ready_future<>();
}
return service::get_storage_proxy().local().mutate_streaming_mutation(std::move(s), plan_id, fm, fragmented).then_wrapped([plan_id, cf_id, from] (auto&& f) {
try {
f.get();
return make_ready_future<>();
} catch (no_such_column_family&) {
sslog.warn("[Stream #{}] STREAM_MUTATION from {}: cf_id={} is missing, assume the table is dropped",
plan_id, from.addr, cf_id);
return make_ready_future<>();
} catch (...) {
throw;
}
return make_ready_future<>();
});
});
});
});
});
ms().register_stream_mutation_fragments([] (const rpc::client_info& cinfo, UUID plan_id, UUID schema_id, UUID cf_id, uint64_t estimated_partitions, rpc::optional<stream_reason> reason_opt, rpc::source<frozen_mutation_fragment> source) {
auto from = netw::messaging_service::get_source(cinfo);
auto reason = reason_opt ? *reason_opt: stream_reason::unspecified;
sslog.trace("Got stream_mutation_fragments from {} reason {}", from, int(reason));
table& cf = service::get_local_storage_service().db().local().find_column_family(cf_id);
return with_scheduling_group(service::get_local_storage_service().db().local().get_streaming_scheduling_group(), [from, estimated_partitions, plan_id, schema_id, &cf, source, reason] () mutable {
return service::get_schema_for_write(schema_id, from).then([from, estimated_partitions, plan_id, schema_id, &cf, source, reason] (schema_ptr s) mutable {
auto sink = ms().make_sink_for_stream_mutation_fragments(source);
auto get_next_mutation_fragment = [source, plan_id, from, s] () mutable {
return source().then([plan_id, from, s] (std::optional<std::tuple<frozen_mutation_fragment>> fmf_opt) mutable {
if (fmf_opt) {
frozen_mutation_fragment& fmf = std::get<0>(fmf_opt.value());
auto sz = fmf.representation().size();
auto mf = fmf.unfreeze(*s);
streaming::get_local_stream_manager().update_progress(plan_id, from.addr, progress_info::direction::IN, sz);
return make_ready_future<mutation_fragment_opt>(std::move(mf));
} else {
return make_ready_future<mutation_fragment_opt>();
}
});
};
distribute_reader_and_consume_on_shards(s, dht::global_partitioner(),
make_generating_reader(s, std::move(get_next_mutation_fragment)),
[plan_id, estimated_partitions, reason] (flat_mutation_reader reader) {
auto& cf = get_local_db().find_column_family(reader.schema());
return db::view::check_needs_view_update_path(_sys_dist_ks->local(), cf, reason).then([cf = cf.shared_from_this(), estimated_partitions, reader = std::move(reader)] (bool use_view_update_path) mutable {
sstables::shared_sstable sst = use_view_update_path ? cf->make_streaming_staging_sstable() : cf->make_streaming_sstable_for_write();
schema_ptr s = reader.schema();
sstables::sstable_writer_config sst_cfg;
sst_cfg.large_data_handler = cf->get_large_data_handler();
auto& pc = service::get_local_streaming_write_priority();
return sst->write_components(std::move(reader), std::max(1ul, estimated_partitions), s, sst_cfg, {}, pc).then([sst] {
return sst->open_data();
}).then([cf, sst] {
return cf->add_sstable_and_update_cache(sst);
}).then([cf, s, sst, use_view_update_path]() mutable -> future<> {
if (!use_view_update_path) {
return make_ready_future<>();
}
return _view_update_generator->local().register_staging_sstable(sst, std::move(cf));
});
});
},
cf.stream_in_progress()
).then_wrapped([s, plan_id, from, sink, estimated_partitions] (future<uint64_t> f) mutable {
int32_t status = 0;
uint64_t received_partitions = 0;
if (f.failed()) {
f.ignore_ready_future();
status = -1;
} else {
received_partitions = f.get0();
}
if (received_partitions) {
sslog.info("[Stream #{}] Write to sstable for ks={}, cf={}, estimated_partitions={}, received_partitions={}",
plan_id, s->ks_name(), s->cf_name(), estimated_partitions, received_partitions);
}
return sink(status).finally([sink] () mutable {
return sink.close();
});
}).handle_exception([s, plan_id, from, sink] (std::exception_ptr ep) {
sslog.error("[Stream #{}] Failed to handle STREAM_MUTATION_FRAGMENTS for ks={}, cf={}, peer={}: {}", plan_id, s->ks_name(), s->cf_name(), from.addr, ep);
});
return make_ready_future<rpc::sink<int>>(sink);
});
});
});
ms().register_stream_mutation_done([] (const rpc::client_info& cinfo, UUID plan_id, dht::token_range_vector ranges, UUID cf_id, unsigned dst_cpu_id) {
const auto& from = cinfo.retrieve_auxiliary<gms::inet_address>("baddr");
return smp::submit_to(dst_cpu_id, [ranges = std::move(ranges), plan_id, cf_id, from] () mutable {
auto session = get_session(plan_id, from, "STREAM_MUTATION_DONE", cf_id);
return session->get_db().invoke_on_all([ranges = std::move(ranges), plan_id, from, cf_id] (database& db) {
if (!db.column_family_exists(cf_id)) {
sslog.warn("[Stream #{}] STREAM_MUTATION_DONE from {}: cf_id={} is missing, assume the table is dropped",
plan_id, from, cf_id);
return make_ready_future<>();
}
dht::partition_range_vector query_ranges;
try {
auto& cf = db.find_column_family(cf_id);
query_ranges.reserve(ranges.size());
for (auto& range : ranges) {
query_ranges.push_back(dht::to_partition_range(range));
}
return cf.flush_streaming_mutations(plan_id, std::move(query_ranges));
} catch (no_such_column_family&) {
sslog.warn("[Stream #{}] STREAM_MUTATION_DONE from {}: cf_id={} is missing, assume the table is dropped",
plan_id, from, cf_id);
return make_ready_future<>();
} catch (...) {
throw;
}
}).then([session, cf_id] {
session->receive_task_completed(cf_id);
});
});
});
ms().register_complete_message([] (const rpc::client_info& cinfo, UUID plan_id, unsigned dst_cpu_id, rpc::optional<bool> failed) {
const auto& from = cinfo.retrieve_auxiliary<gms::inet_address>("baddr");
if (failed && *failed) {
return smp::submit_to(dst_cpu_id, [plan_id, from, dst_cpu_id] () {
auto session = get_session(plan_id, from, "COMPLETE_MESSAGE");
sslog.debug("[Stream #{}] COMPLETE_MESSAGE with error flag from {} dst_cpu_id={}", plan_id, from, dst_cpu_id);
session->received_failed_complete_message();
return make_ready_future<>();
});
} else {
// Be compatible with old version. Do nothing but return a ready future.
sslog.debug("[Stream #{}] COMPLETE_MESSAGE from {} dst_cpu_id={}", plan_id, from, dst_cpu_id);
return make_ready_future<>();
}
});
}
distributed<database>* stream_session::_db;
distributed<db::system_distributed_keyspace>* stream_session::_sys_dist_ks;
distributed<db::view::view_update_generator>* stream_session::_view_update_generator;
stream_session::stream_session() = default;
stream_session::stream_session(inet_address peer_)
: peer(peer_) {
//this.metrics = StreamingMetrics.get(connecting);
}
stream_session::~stream_session() = default;
future<> stream_session::init_streaming_service(distributed<database>& db, distributed<db::system_distributed_keyspace>& sys_dist_ks, distributed<db::view::view_update_generator>& view_update_generator) {
_db = &db;
_sys_dist_ks = &sys_dist_ks;
_view_update_generator = &view_update_generator;
// #293 - do not stop anything
// engine().at_exit([] {
// return get_stream_manager().stop();
// });
return get_stream_manager().start().then([] {
gms::get_local_gossiper().register_(get_local_stream_manager().shared_from_this());
return _db->invoke_on_all([] (auto& db) {
init_messaging_service_handler();
});
});
}
future<> stream_session::on_initialization_complete() {
// send prepare message
set_state(stream_session_state::PREPARING);
auto prepare = prepare_message();
std::copy(_requests.begin(), _requests.end(), std::back_inserter(prepare.requests));
for (auto& x : _transfers) {
prepare.summaries.emplace_back(x.second.get_summary());
}
auto id = msg_addr{this->peer, 0};
sslog.debug("[Stream #{}] SEND PREPARE_MESSAGE to {}", plan_id(), id);
return ms().send_prepare_message(id, std::move(prepare), plan_id(), description(), get_reason()).then_wrapped([this, id] (auto&& f) {
try {
auto msg = f.get0();
sslog.debug("[Stream #{}] GOT PREPARE_MESSAGE Reply from {}", this->plan_id(), this->peer);
this->dst_cpu_id = msg.dst_cpu_id;
for (auto& summary : msg.summaries) {
this->prepare_receiving(summary);
}
if (_stream_result) {
_stream_result->handle_session_prepared(this->shared_from_this());
}
} catch (...) {
sslog.warn("[Stream #{}] Fail to send PREPARE_MESSAGE to {}, {}", this->plan_id(), id, std::current_exception());
throw;
}
return make_ready_future<>();
}).then([this, id] {
auto plan_id = this->plan_id();
sslog.debug("[Stream #{}] SEND PREPARE_DONE_MESSAGE to {}", plan_id, id);
return ms().send_prepare_done_message(id, plan_id, this->dst_cpu_id).then([this] {
sslog.debug("[Stream #{}] GOT PREPARE_DONE_MESSAGE Reply from {}", this->plan_id(), this->peer);
}).handle_exception([id, plan_id] (auto ep) {
sslog.warn("[Stream #{}] Fail to send PREPARE_DONE_MESSAGE to {}, {}", plan_id, id, ep);
std::rethrow_exception(ep);
});
}).then([this] {
sslog.debug("[Stream #{}] Initiator starts to sent", this->plan_id());
this->start_streaming_files();
});
}
void stream_session::received_failed_complete_message() {
sslog.info("[Stream #{}] Received failed complete message, peer={}", plan_id(), peer);
_received_failed_complete_message = true;
close_session(stream_session_state::FAILED);
}
void stream_session::abort() {
sslog.info("[Stream #{}] Aborted stream session={}, peer={}, is_initialized={}", plan_id(), this, peer, is_initialized());
close_session(stream_session_state::FAILED);
}
void stream_session::on_error() {
sslog.warn("[Stream #{}] Streaming error occurred, peer={}", plan_id(), peer);
close_session(stream_session_state::FAILED);
}
// Only follower calls this function upon receiving of prepare_message from initiator
future<prepare_message> stream_session::prepare(std::vector<stream_request> requests, std::vector<stream_summary> summaries) {
auto plan_id = this->plan_id();
sslog.debug("[Stream #{}] prepare requests nr={}, summaries nr={}", plan_id, requests.size(), summaries.size());
// prepare tasks
set_state(stream_session_state::PREPARING);
auto& db = get_local_db();
for (auto& request : requests) {
// always flush on stream request
sslog.debug("[Stream #{}] prepare stream_request={}", plan_id, request);
auto ks = request.keyspace;
// Make sure cf requested by peer node exists
for (auto& cf : request.column_families) {
try {
db.find_column_family(ks, cf);
} catch (no_such_column_family&) {
auto err = format("[Stream #{{}}] prepare requested ks={{}} cf={{}} does not exist", ks, cf);
sslog.warn(err.c_str());
throw std::runtime_error(err);
}
}
add_transfer_ranges(request.keyspace, request.ranges, request.column_families);
}
for (auto& summary : summaries) {
sslog.debug("[Stream #{}] prepare stream_summary={}", plan_id, summary);
auto cf_id = summary.cf_id;
// Make sure cf the peer node will send to us exists
try {
db.find_column_family(cf_id);
} catch (no_such_column_family&) {
auto err = format("[Stream #{{}}] prepare cf_id={} does not exist", plan_id, cf_id);
sslog.warn(err.c_str());
throw std::runtime_error(err);
}
prepare_receiving(summary);
}
// Always send a prepare_message back to follower
prepare_message prepare;
if (!requests.empty()) {
for (auto& x: _transfers) {
auto& task = x.second;
prepare.summaries.emplace_back(task.get_summary());
}
}
prepare.dst_cpu_id = engine().cpu_id();;
if (_stream_result) {
_stream_result->handle_session_prepared(shared_from_this());
}
return make_ready_future<prepare_message>(std::move(prepare));
}
void stream_session::follower_start_sent() {
sslog.debug("[Stream #{}] Follower start to sent", this->plan_id());
this->start_streaming_files();
}
session_info stream_session::make_session_info() {
std::vector<stream_summary> receiving_summaries;
for (auto& receiver : _receivers) {
receiving_summaries.emplace_back(receiver.second.get_summary());
}
std::vector<stream_summary> transfer_summaries;
for (auto& transfer : _transfers) {
transfer_summaries.emplace_back(transfer.second.get_summary());
}
return session_info(peer, std::move(receiving_summaries), std::move(transfer_summaries), _state);
}
void stream_session::receive_task_completed(UUID cf_id) {
_receivers.erase(cf_id);
sslog.debug("[Stream #{}] receive task_completed: cf_id={} done, stream_receive_task.size={} stream_transfer_task.size={}",
plan_id(), cf_id, _receivers.size(), _transfers.size());
maybe_completed();
}
void stream_session::transfer_task_completed(UUID cf_id) {
_transfers.erase(cf_id);
sslog.debug("[Stream #{}] transfer task_completed: cf_id={} done, stream_receive_task.size={} stream_transfer_task.size={}",
plan_id(), cf_id, _receivers.size(), _transfers.size());
maybe_completed();
}
void stream_session::transfer_task_completed_all() {
_transfers.clear();
sslog.debug("[Stream #{}] transfer task_completed: all done, stream_receive_task.size={} stream_transfer_task.size={}",
plan_id(), _receivers.size(), _transfers.size());
maybe_completed();
}
void stream_session::send_failed_complete_message() {
if (!is_initialized()) {
return;
}
auto plan_id = this->plan_id();
if (_received_failed_complete_message) {
sslog.debug("[Stream #{}] Skip sending failed message back to peer", plan_id);
return;
}
if (!_complete_sent) {
_complete_sent = true;
} else {
return;
}
auto id = msg_addr{this->peer, this->dst_cpu_id};
sslog.debug("[Stream #{}] SEND COMPLETE_MESSAGE to {}", plan_id, id);
auto session = shared_from_this();
bool failed = true;
this->ms().send_complete_message(id, plan_id, this->dst_cpu_id, failed).then([session, id, plan_id] {
sslog.debug("[Stream #{}] GOT COMPLETE_MESSAGE Reply from {}", plan_id, id.addr);
}).handle_exception([session, id, plan_id] (auto ep) {
sslog.debug("[Stream #{}] COMPLETE_MESSAGE for {} has failed: {}", plan_id, id.addr, ep);
});
}
bool stream_session::maybe_completed() {
bool completed = _receivers.empty() && _transfers.empty();
if (completed) {
sslog.debug("[Stream #{}] maybe_completed: {} -> COMPLETE: session={}, peer={}", plan_id(), _state, this, peer);
close_session(stream_session_state::COMPLETE);
}
return completed;
}
void stream_session::prepare_receiving(stream_summary& summary) {
if (summary.files > 0) {
// FIXME: handle when cf_id already exists
_receivers.emplace(summary.cf_id, stream_receive_task(shared_from_this(), summary.cf_id, summary.files, summary.total_size));
}
}
void stream_session::start_streaming_files() {
sslog.debug("[Stream #{}] {}: {} transfers to send", plan_id(), __func__, _transfers.size());
if (!_transfers.empty()) {
set_state(stream_session_state::STREAMING);
}
do_for_each(_transfers.begin(), _transfers.end(), [this] (auto& item) {
sslog.debug("[Stream #{}] Start to send cf_id={}", this->plan_id(), item.first);
return item.second.execute();
}).then([this] {
this->transfer_task_completed_all();
}).handle_exception([this] (auto ep) {
sslog.warn("[Stream #{}] Failed to send: {}", this->plan_id(), ep);
this->on_error();
});
}
std::vector<column_family*> stream_session::get_column_family_stores(const sstring& keyspace, const std::vector<sstring>& column_families) {
// if columnfamilies are not specified, we add all cf under the keyspace
std::vector<column_family*> stores;
auto& db = get_local_db();
if (column_families.empty()) {
for (auto& x : db.get_column_families()) {
column_family& cf = *(x.second);
auto cf_name = cf.schema()->cf_name();
auto ks_name = cf.schema()->ks_name();
if (ks_name == keyspace) {
sslog.debug("Find ks={} cf={}", ks_name, cf_name);
stores.push_back(&cf);
}
}
} else {
// TODO: We can move this to database class and use shared_ptr<column_family> instead
for (auto& cf_name : column_families) {
try {
auto& x = db.find_column_family(keyspace, cf_name);
stores.push_back(&x);
} catch (no_such_column_family&) {
sslog.warn("stream_session: {}.{} does not exist: {}\n", keyspace, cf_name, std::current_exception());
continue;
}
}
}
return stores;
}
void stream_session::add_transfer_ranges(sstring keyspace, dht::token_range_vector ranges, std::vector<sstring> column_families) {
auto cfs = get_column_family_stores(keyspace, column_families);
for (auto& cf : cfs) {
auto cf_id = cf->schema()->id();
auto it = _transfers.find(cf_id);
if (it == _transfers.end()) {
stream_transfer_task task(shared_from_this(), cf_id, ranges);
auto inserted = _transfers.emplace(cf_id, std::move(task)).second;
assert(inserted);
} else {
it->second.append_ranges(ranges);
}
}
}
future<> stream_session::receiving_failed(UUID cf_id)
{
return get_db().invoke_on_all([cf_id, plan_id = plan_id()] (database& db) {
try {
auto& cf = db.find_column_family(cf_id);
return cf.fail_streaming_mutations(plan_id);
} catch (no_such_column_family&) {
return make_ready_future<>();
}
});
}
void stream_session::close_session(stream_session_state final_state) {
sslog.debug("[Stream #{}] close_session session={}, state={}, is_aborted={}", plan_id(), this, final_state, _is_aborted);
if (!_is_aborted) {
_is_aborted = true;
set_state(final_state);
if (final_state == stream_session_state::FAILED) {
for (auto& x : _transfers) {
stream_transfer_task& task = x.second;
sslog.debug("[Stream #{}] close_session session={}, state={}, abort stream_transfer_task cf_id={}", plan_id(), this, final_state, task.cf_id);
task.abort();
}
for (auto& x : _receivers) {
stream_receive_task& task = x.second;
sslog.debug("[Stream #{}] close_session session={}, state={}, abort stream_receive_task cf_id={}", plan_id(), this, final_state, task.cf_id);
receiving_failed(x.first);
task.abort();
}
send_failed_complete_message();
}
// Note that we shouldn't block on this close because this method is called on the handler
// incoming thread (so we would deadlock).
//handler.close();
if (_stream_result) {
_stream_result->handle_session_complete(shared_from_this());
}
sslog.debug("[Stream #{}] close_session session={}, state={}", plan_id(), this, final_state);
}
}
void stream_session::start() {
if (_requests.empty() && _transfers.empty()) {
sslog.info("[Stream #{}] Session does not have any tasks.", plan_id());
close_session(stream_session_state::COMPLETE);
return;
}
auto connecting = netw::get_local_messaging_service().get_preferred_ip(peer);
if (peer == connecting) {
sslog.debug("[Stream #{}] Starting streaming to {}", plan_id(), peer);
} else {
sslog.debug("[Stream #{}] Starting streaming to {} through {}", plan_id(), peer, connecting);
}
on_initialization_complete().handle_exception([this] (auto ep) {
this->on_error();
});
}
bool stream_session::is_initialized() const {
return bool(_stream_result);
}
void stream_session::init(shared_ptr<stream_result_future> stream_result_) {
_stream_result = stream_result_;
}
utils::UUID stream_session::plan_id() {
return _stream_result ? _stream_result->plan_id : UUID();
}
sstring stream_session::description() {
return _stream_result ? _stream_result->description : "";
}
future<> stream_session::update_progress() {
return get_local_stream_manager().get_progress_on_all_shards(plan_id(), peer).then([this] (auto sbytes) {
auto bytes_sent = sbytes.bytes_sent;
if (bytes_sent > 0) {
auto tx = progress_info(this->peer, "txnofile", progress_info::direction::OUT, bytes_sent, bytes_sent);
_session_info.update_progress(std::move(tx));
}
auto bytes_received = sbytes.bytes_received;
if (bytes_received > 0) {
auto rx = progress_info(this->peer, "rxnofile", progress_info::direction::IN, bytes_received, bytes_received);
_session_info.update_progress(std::move(rx));
}
});
}
} // namespace streaming
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