mirrors/scylladb
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
40dbdae24e043cfa3c226dc0f5929050ee467a20
scylladb/streaming/stream_session.cc
Asias He e20038eb84 streaming: Handle stream_mutation rpc handler on all shards 
In streaming, the sender sends the mutations on all the local shards in
parallel, it is possible that the receiver handle more than one such
connection on the same shard. It is determined by where the tcp
connection goes. Current rpc ignores the dest shard id when sending the
rpc message.

For instance, say node1 has 2 shards, node2 has 2 shards. Currently, we
can end up with like this:

   Node 1 shard 0 -> Node 2 shard 1
   Node 1 shard 1 -> Node 2 shard 1

It is better if we do:

   Node 1 shard 0 -> Node 2 shard 0
   Node 1 shard 1 -> Node 2 shard 1

This patch solves this problem by let the handler always handle on
shard = src_cpu_id % smp::count.

If sender and receiver have the same shard config, it is completely
distributed the work evenly.

If sender and receiver do not have the same shard config, it is
unavoidable some of the shard will do more work than the others.

Tests: dtest update_cluster_layout_tests.py

Message-Id: <911827bcf67459a07ec92623a9ed4c4fbba195ca.1524622375.git.asias@scylladb.com>
2018-05-19 21:08:25 +03:00

601 lines
26 KiB
C++
Raw Blame History

/*
* 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 "core/sleep.hh"
#include "service/storage_service.hh"
#include "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"
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::experimental::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 = sprint("[Stream #%s] GOT %s from %s: 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 = sprint("[Stream #%s] GOT %s from %s: 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) {
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();
return smp::submit_to(dst_cpu_id, [msg = std::move(msg), plan_id, description = std::move(description), from, src_cpu_id, dst_cpu_id] () 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;
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) {
auto from = netw::messaging_service::get_source(cinfo);
auto src_cpu_id = from.cpu_id;
auto fragmented = fragmented_opt && *fragmented_opt;
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_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;
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) {
_db = &db;
// #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()).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 = sprint("[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 = sprint("[Stream #{}] prepare cf_id=%s 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={}, cancel keep_alive timer", plan_id(), this, final_state);
_keep_alive.cancel();
}
}
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_;
_keep_alive.set_callback([this] {
auto plan_id = this->plan_id();
auto peer = this->peer;
get_local_stream_manager().get_progress_on_all_shards(plan_id, peer).then([this, peer, plan_id] (stream_bytes sbytes) {
if (this->_is_aborted) {
sslog.info("[Stream #{}] The session {} is closed, keep alive timer will do nothing", plan_id, this);
return;
}
auto now = lowres_clock::now();
sslog.debug("[Stream #{}] keep alive timer callback sbytes old: tx={}, rx={} new: tx={} rx={}",
plan_id, this->_last_stream_bytes.bytes_sent, this->_last_stream_bytes.bytes_received,
sbytes.bytes_sent, sbytes.bytes_received);
if (sbytes.bytes_sent > this->_last_stream_bytes.bytes_sent ||
sbytes.bytes_received > this->_last_stream_bytes.bytes_received) {
sslog.debug("[Stream #{}] The session {} made progress with peer {}", plan_id, this, peer);
// Progress has been made
this->_last_stream_bytes = sbytes;
this->_last_stream_progress = now;
this->start_keep_alive_timer();
} else if (now - this->_last_stream_progress >= this->_keep_alive_timeout) {
// Timeout
sslog.info("[Stream #{}] The session {} is idle for {} seconds, the peer {} is probably gone, close it",
plan_id, this, this->_keep_alive_timeout.count(), peer);
this->on_error();
} else {
// Start the timer to check again
sslog.info("[Stream #{}] The session {} made no progress with peer {}", plan_id, this, peer);
this->start_keep_alive_timer();
}
}).handle_exception([plan_id, peer, session = this->shared_from_this()] (auto ep) {
sslog.info("[Stream #{}] keep alive timer callback fails with peer {}: {}", plan_id, peer, ep);
});
});
_last_stream_progress = lowres_clock::now();
start_keep_alive_timer();
}
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
Reference in New Issue View Git Blame Copy Permalink