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#include "interconnect_channel.h"
#include <library/cpp/actors/core/events.h>
#include <library/cpp/actors/core/executor_thread.h>
#include <library/cpp/actors/core/log.h>
#include <library/cpp/actors/core/probes.h>
#include <library/cpp/actors/protos/services_common.pb.h>
#include <library/cpp/actors/prof/tag.h>
#include <library/cpp/digest/crc32c/crc32c.h>
LWTRACE_USING(ACTORLIB_PROVIDER);
namespace NActors {
bool TEventOutputChannel::FeedDescriptor(TTcpPacketOutTask& task, TEventHolder& event, ui64 *weightConsumed) {
const size_t descrSize = Params.UseExtendedTraceFmt ? sizeof(TEventDescr2) : sizeof(TEventDescr1);
const size_t amount = sizeof(TChannelPart) + descrSize;
if (task.GetVirtualFreeAmount() < amount) {
return false;
}
auto traceId = event.Span.GetTraceId();
event.Span.EndOk();
LWTRACK(SerializeToPacketEnd, event.Orbit, PeerNodeId, ChannelId, OutputQueueSize, task.GetDataSize());
task.Orbit.Take(event.Orbit);
event.Descr.Flags = (event.Descr.Flags & ~IEventHandle::FlagForwardOnNondelivery) |
(ExtendedFormat ? IEventHandle::FlagExtendedFormat : 0);
TChannelPart *part = static_cast<TChannelPart*>(task.GetFreeArea());
part->Channel = ChannelId | TChannelPart::LastPartFlag;
part->Size = descrSize;
void *descr = part + 1;
if (Params.UseExtendedTraceFmt) {
auto *p = static_cast<TEventDescr2*>(descr);
*p = {
event.Descr.Type,
event.Descr.Flags,
event.Descr.Recipient,
event.Descr.Sender,
event.Descr.Cookie,
{},
event.Descr.Checksum
};
traceId.Serialize(&p->TraceId);
} else {
auto *p = static_cast<TEventDescr1*>(descr);
*p = {
event.Descr.Type,
event.Descr.Flags,
event.Descr.Recipient,
event.Descr.Sender,
event.Descr.Cookie,
{},
event.Descr.Checksum
};
}
task.AppendBuf(part, amount);
*weightConsumed += amount;
OutputQueueSize -= part->Size;
Metrics->UpdateOutputChannelEvents(ChannelId);
return true;
}
void TEventOutputChannel::DropConfirmed(ui64 confirm) {
LOG_DEBUG_IC_SESSION("ICOCH98", "Dropping confirmed messages");
for (auto it = NotYetConfirmed.begin(); it != NotYetConfirmed.end() && it->Serial <= confirm; ) {
Pool.Release(NotYetConfirmed, it++);
}
}
bool TEventOutputChannel::FeedBuf(TTcpPacketOutTask& task, ui64 serial, ui64 *weightConsumed) {
for (;;) {
Y_VERIFY(!Queue.empty());
TEventHolder& event = Queue.front();
switch (State) {
case EState::INITIAL:
event.InitChecksum();
LWTRACK(SerializeToPacketBegin, event.Orbit, PeerNodeId, ChannelId, OutputQueueSize);
if (event.Event) {
State = EState::CHUNKER;
IEventBase *base = event.Event.Get();
Chunker.SetSerializingEvent(base);
ExtendedFormat = base->IsExtendedFormat();
} else if (event.Buffer) {
State = EState::BUFFER;
Iter = event.Buffer->GetBeginIter();
ExtendedFormat = event.Buffer->IsExtendedFormat();
} else {
State = EState::DESCRIPTOR;
ExtendedFormat = false;
}
break;
case EState::CHUNKER:
case EState::BUFFER: {
size_t maxBytes = task.GetVirtualFreeAmount();
if (maxBytes <= sizeof(TChannelPart)) {
return false;
}
TChannelPart *part = static_cast<TChannelPart*>(task.GetFreeArea());
part->Channel = ChannelId;
part->Size = 0;
task.AppendBuf(part, sizeof(TChannelPart));
maxBytes -= sizeof(TChannelPart);
Y_VERIFY(maxBytes);
auto addChunk = [&](const void *data, size_t len) {
event.UpdateChecksum(Params, data, len);
task.AppendBuf(data, len);
part->Size += len;
Y_VERIFY_DEBUG(maxBytes >= len);
maxBytes -= len;
event.EventActuallySerialized += len;
if (event.EventActuallySerialized > MaxSerializedEventSize) {
throw TExSerializedEventTooLarge(event.Descr.Type);
}
};
bool complete = false;
if (State == EState::CHUNKER) {
Y_VERIFY_DEBUG(task.GetFreeArea() == part + 1);
while (!complete && maxBytes) {
const auto [first, last] = Chunker.FeedBuf(task.GetFreeArea(), maxBytes);
for (auto p = first; p != last; ++p) {
addChunk(p->first, p->second);
}
complete = Chunker.IsComplete();
}
Y_VERIFY(!complete || Chunker.IsSuccessfull());
Y_VERIFY_DEBUG(complete || !maxBytes);
} else { // BUFFER
while (const size_t numb = Min(maxBytes, Iter.ContiguousSize())) {
const char *obuf = Iter.ContiguousData();
addChunk(obuf, numb);
Iter += numb;
}
complete = !Iter.Valid();
}
if (complete) {
Y_VERIFY(event.EventActuallySerialized == event.EventSerializedSize,
"EventActuallySerialized# %" PRIu32 " EventSerializedSize# %" PRIu32 " Type# 0x%08" PRIx32,
event.EventActuallySerialized, event.EventSerializedSize, event.Descr.Type);
}
if (!part->Size) {
task.Undo(sizeof(TChannelPart));
} else {
*weightConsumed += sizeof(TChannelPart) + part->Size;
OutputQueueSize -= part->Size;
}
if (complete) {
State = EState::DESCRIPTOR;
}
break;
}
case EState::DESCRIPTOR:
if (!FeedDescriptor(task, event, weightConsumed)) {
return false;
}
event.Serial = serial;
NotYetConfirmed.splice(NotYetConfirmed.end(), Queue, Queue.begin()); // move event to not-yet-confirmed queue
State = EState::INITIAL;
return true; // we have processed whole event, signal to the caller
}
}
}
void TEventOutputChannel::NotifyUndelivered() {
LOG_DEBUG_IC_SESSION("ICOCH89", "Notyfying about Undelivered messages! NotYetConfirmed size: %zu, Queue size: %zu", NotYetConfirmed.size(), Queue.size());
if (State == EState::CHUNKER) {
Y_VERIFY(!Chunker.IsComplete()); // chunk must have an event being serialized
Y_VERIFY(!Queue.empty()); // this event must be the first event in queue
TEventHolder& event = Queue.front();
Y_VERIFY(Chunker.GetCurrentEvent() == event.Event.Get()); // ensure the event is valid
Chunker.Abort(); // stop serializing current event
Y_VERIFY(Chunker.IsComplete());
}
for (auto& item : NotYetConfirmed) {
if (item.Descr.Flags & IEventHandle::FlagGenerateUnsureUndelivered) { // notify only when unsure flag is set
item.ForwardOnNondelivery(true);
}
}
Pool.Release(NotYetConfirmed);
for (auto& item : Queue) {
item.ForwardOnNondelivery(false);
}
Pool.Release(Queue);
}
}
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