solanaceae_ngc_ft1/solanaceae/ngc_ft1_sha1/chunk_picker_systems.cpp
2024-07-14 20:11:37 +02:00

128 lines
3.7 KiB
C++

#include "./chunk_picker_systems.hpp"
#include <solanaceae/ngc_ft1/ngcft1_file_kind.hpp>
#include "./components.hpp"
#include "./chunk_picker.hpp"
#include "./contact_components.hpp"
#include <cassert>
#include <iostream>
namespace Systems {
void chunk_picker_updates(
Contact3Registry& cr,
ObjectRegistry& os_reg,
const entt::dense_map<Contact3, size_t>& peer_open_requests,
const ReceivingTransfers& receiving_transfers,
NGCFT1& nft, // TODO: remove this somehow
const float delta
) {
std::vector<Contact3Handle> cp_to_remove;
// first, update timers
cr.view<ChunkPickerTimer>().each([&cr, delta](const Contact3 cv, ChunkPickerTimer& cpt) {
cpt.timer -= delta;
if (cpt.timer <= 0.f) {
cr.emplace_or_replace<ChunkPickerUpdateTag>(cv);
}
});
//std::cout << "number of chunkpickers: " << _cr.storage<ChunkPicker>().size() << ", of which " << _cr.storage<ChunkPickerUpdateTag>().size() << " need updating\n";
// now check for potentially missing cp
auto cput_view = cr.view<ChunkPickerUpdateTag>();
cput_view.each([&cr, &cp_to_remove](const Contact3 cv) {
Contact3Handle c{cr, cv};
//std::cout << "cput :)\n";
if (!c.all_of<Contact::Components::ToxGroupPeerEphemeral, Contact::Components::FT1Participation>()) {
std::cout << "cput uh nuh :(\n";
cp_to_remove.push_back(c);
return;
}
if (!c.all_of<ChunkPicker>()) {
std::cout << "creating new cp!!\n";
c.emplace<ChunkPicker>();
c.emplace_or_replace<ChunkPickerTimer>();
}
});
// now update all cp that are tagged
cr.view<ChunkPicker, ChunkPickerUpdateTag>().each([&cr, &os_reg, &peer_open_requests, &receiving_transfers, &nft, &cp_to_remove](const Contact3 cv, ChunkPicker& cp) {
Contact3Handle c{cr, cv};
if (!c.all_of<Contact::Components::ToxGroupPeerEphemeral, Contact::Components::FT1Participation>()) {
cp_to_remove.push_back(c);
return;
}
//std::cout << "cpu :)\n";
// HACK: expensive, dont do every tick, only on events
// do verification in debug instead?
//cp.validateParticipation(c, _os.registry());
size_t peer_open_request = 0;
if (peer_open_requests.contains(c)) {
peer_open_request += peer_open_requests.at(c);
}
auto new_requests = cp.updateChunkRequests(
c,
os_reg,
receiving_transfers,
peer_open_request
);
if (new_requests.empty()) {
// updateChunkRequests updates the unfinished
// TODO: pull out and check there?
if (cp.participating_unfinished.empty()) {
std::cout << "destroying empty useless cp\n";
cp_to_remove.push_back(c);
} else {
// most likely will have something soon
// TODO: mark dirty on have instead?
c.get_or_emplace<ChunkPickerTimer>().timer = 10.f;
}
return;
}
assert(c.all_of<Contact::Components::ToxGroupPeerEphemeral>());
const auto [group_number, peer_number] = c.get<Contact::Components::ToxGroupPeerEphemeral>();
for (const auto [r_o, r_idx] : new_requests) {
auto& cc = r_o.get<Components::FT1ChunkSHA1Cache>();
const auto& info = r_o.get<Components::FT1InfoSHA1>();
// request chunk_idx
nft.NGC_FT1_send_request_private(
group_number, peer_number,
static_cast<uint32_t>(NGCFT1_file_kind::HASH_SHA1_CHUNK),
info.chunks.at(r_idx).data.data(), info.chunks.at(r_idx).size()
);
std::cout << "SHA1_NGCFT1: requesting chunk [" << info.chunks.at(r_idx) << "] from " << group_number << ":" << peer_number << "\n";
}
// force update every minute
// TODO: add small random bias to spread load
c.get_or_emplace<ChunkPickerTimer>().timer = 60.f;
});
// unmark all marked
cr.clear<ChunkPickerUpdateTag>();
assert(cr.storage<ChunkPickerUpdateTag>().empty());
for (const auto& c : cp_to_remove) {
c.remove<ChunkPicker, ChunkPickerTimer>();
}
}
} // Systems