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/*
* Copyright (c) 2019 Cisco and/or its affiliates.
* Licensed 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.
*/
#include <hicn/http-proxy/icn_receiver.h>
#include <hicn/transport/core/interest.h>
#include <hicn/transport/http/default_values.h>
#include <hicn/transport/utils/hash.h>
#include <hicn/transport/utils/log.h>
#include <functional>
#include <memory>
#include <hicn/http-proxy/HTTP1.xMessageFastParser.h>
#include <hicn/http-proxy/utils.h>
namespace transport {
AsyncConsumerProducer::AsyncConsumerProducer(
asio::io_service& io_service, const std::string& prefix,
const std::string& first_ipv6_word, const std::string& origin_address,
const std::string& origin_port, const std::string& cache_size,
const std::string& mtu, const std::string& content_lifetime, bool manifest)
: prefix_(core::Prefix(generatePrefix(prefix, first_ipv6_word), 64)),
io_service_(io_service),
external_io_service_(true),
producer_socket_(),
ip_address_(origin_address),
port_(origin_port),
cache_size_(std::stoul(cache_size)),
mtu_(std::stoul(mtu)),
request_counter_(0),
connector_(io_service_, ip_address_, port_,
std::bind(&AsyncConsumerProducer::publishContent, this,
std::placeholders::_1, std::placeholders::_2,
std::placeholders::_3, std::placeholders::_4),
[this](asio::ip::tcp::socket& socket) -> bool {
std::queue<interface::PublicationOptions> empty;
std::swap(response_name_queue_, empty);
return true;
}),
default_content_lifetime_(std::stoul(content_lifetime)) {
int ret = producer_socket_.setSocketOption(
interface::GeneralTransportOptions::OUTPUT_BUFFER_SIZE, cache_size_);
if (ret != SOCKET_OPTION_SET) {
TRANSPORT_LOGD("Warning: output buffer size has not been set.");
}
ret = producer_socket_.setSocketOption(
interface::GeneralTransportOptions::MAKE_MANIFEST, manifest);
if (ret != SOCKET_OPTION_SET) {
TRANSPORT_LOGD("Warning: impossible to enable signatures.");
}
ret = producer_socket_.setSocketOption(
interface::GeneralTransportOptions::DATA_PACKET_SIZE, mtu_);
if (ret != SOCKET_OPTION_SET) {
TRANSPORT_LOGD("Warning: mtu has not been set.");
}
producer_socket_.registerPrefix(prefix_);
}
void AsyncConsumerProducer::start() {
TRANSPORT_LOGD("Starting listening");
doReceive();
}
void AsyncConsumerProducer::run() {
start();
if (!external_io_service_) {
io_service_.run();
}
}
void AsyncConsumerProducer::stop() {
io_service_.post([this]() {
TRANSPORT_LOGI("Number of requests processed by plugin: %lu",
(unsigned long)request_counter_);
producer_socket_.stop();
connector_.close();
});
}
void AsyncConsumerProducer::doReceive() {
producer_socket_.setSocketOption(
interface::ProducerCallbacksOptions::CACHE_MISS,
[this](interface::ProducerSocket& producer,
interface::Interest& interest) {
if (interest.payloadSize() > 0) {
// Interest may contain http request
io_service_.post(std::bind(
&AsyncConsumerProducer::manageIncomingInterest, this,
interest.getWritableName(), interest.acquireMemBufReference(),
interest.getPayload().release()));
}
});
producer_socket_.connect();
}
void AsyncConsumerProducer::manageIncomingInterest(
core::Name& name, core::Packet::MemBufPtr& packet, utils::MemBuf* payload) {
auto seg = name.getSuffix();
name.setSuffix(0);
auto _it = chunk_number_map_.find(name);
auto _end = chunk_number_map_.end();
if (_it != _end) {
if (_it->second.second) {
TRANSPORT_LOGD(
"Content is in production, interests will be satisfied shortly.");
return;
}
if (seg >= _it->second.first) {
TRANSPORT_LOGD(
"Ignoring interest with name %s for a content object which does not "
"exist. (Request: %u, max: %u)",
name.toString().c_str(), (uint32_t)seg, (uint32_t)_it->second.first);
return;
}
}
bool is_mpd =
HTTPMessageFastParser::isMpdRequest(payload->data(), payload->length());
auto pair = chunk_number_map_.emplace(name, std::pair<uint32_t, bool>(0, 0));
if (!pair.second) {
pair.first->second.first = 0;
}
pair.first->second.second = true;
response_name_queue_.emplace(std::move(name),
is_mpd ? 1000 : default_content_lifetime_);
connector_.send(payload, [packet = std::move(packet)]() {});
}
void AsyncConsumerProducer::publishContent(const uint8_t* data,
std::size_t size, bool is_last,
bool headers) {
uint32_t start_suffix = 0;
if (response_name_queue_.empty()) {
std::cerr << "Aborting due tue empty request queue" << std::endl;
abort();
}
interface::PublicationOptions& options = response_name_queue_.front();
int ret = producer_socket_.setSocketOption(
interface::GeneralTransportOptions::CONTENT_OBJECT_EXPIRY_TIME,
options.getLifetime());
if (TRANSPORT_EXPECT_FALSE(ret != SOCKET_OPTION_SET)) {
TRANSPORT_LOGD("Warning: content object lifetime has not been set.");
}
const interface::Name& name = options.getName();
auto it = chunk_number_map_.find(name);
if (it == chunk_number_map_.end()) {
std::cerr << "Aborting due to response not found in ResposeInfo map."
<< std::endl;
abort();
}
start_suffix = it->second.first;
if (headers) {
request_counter_++;
}
it->second.first +=
producer_socket_.produce(name, data, size, is_last, start_suffix);
if (is_last) {
it->second.second = false;
response_name_queue_.pop();
}
}
} // namespace transport
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