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#include "interconnect.h"
#include "interconnect_impl.h"
#include "interconnect_address.h"
#include "interconnect_nameserver_base.h"
#include "events_local.h"
#include "logging.h"
#include <library/cpp/actors/core/hfunc.h>
#include <library/cpp/actors/core/log.h>
namespace NActors {
class TInterconnectDynamicNameserver
: public TInterconnectNameserverBase<TInterconnectDynamicNameserver>
, public TInterconnectLoggingBase
{
struct TPendingRequest {
TEvInterconnect::TEvResolveNode::TPtr Request;
TInstant Deadline;
TPendingRequest(TEvInterconnect::TEvResolveNode::TPtr request, const TInstant& deadline)
: Request(request), Deadline(deadline)
{
}
};
TMap<ui32, TTableNameserverSetup::TNodeInfo> NodeTable;
TVector<TPendingRequest> PendingRequests;
TDuration PendingPeriod;
void PrintInfo() {
TString logMsg = TStringBuilder() << "Table size: " << NodeTable.size();
for (const auto& [nodeId, node] : NodeTable) {
TString str = TStringBuilder() << "\n > Node " << nodeId << " `" << node.Address << "`:" << node.Port << ", host: " << node.Host << ", resolveHost: " << node.ResolveHost;
logMsg += str;
}
LOG_DEBUG_IC("ICN01", "%s", logMsg.c_str());
}
bool IsNodeUpdated(const ui32 nodeId, const TString& address, const ui32 port) {
bool printInfo = false;
auto it = NodeTable.find(nodeId);
if (it == NodeTable.end()) {
LOG_DEBUG_IC("ICN02", "New node %u `%s`: %u",
nodeId, address.c_str(), port);
printInfo = true;
} else if (it->second.Address != address || it->second.Port != port) {
LOG_DEBUG_IC("ICN03", "Updated node %u `%s`: %u (from `%s`: %u)",
nodeId, address.c_str(), port, it->second.Address.c_str(), it->second.Port);
printInfo = true;
Send(TActivationContext::InterconnectProxy(nodeId), new TEvInterconnect::TEvDisconnect);
}
return printInfo;
}
void DiscardTimedOutRequests(const TActorContext& ctx, ui32 compactionCount = 0) {
auto now = Now();
for (auto& pending : PendingRequests) {
if (pending.Request && pending.Deadline > now) {
LOG_ERROR_IC("ICN06", "Unknown nodeId: %u", pending.Request->Get()->Record.GetNodeId());
auto reply = new TEvLocalNodeInfo;
reply->NodeId = pending.Request->Get()->Record.GetNodeId();
ctx.Send(pending.Request->Sender, reply);
pending.Request.Reset();
compactionCount++;
}
}
if (compactionCount) {
TVector<TPendingRequest> requests;
if (compactionCount < PendingRequests.size()) { // sanity check
requests.reserve(PendingRequests.size() - compactionCount);
}
for (auto& pending : PendingRequests) {
if (pending.Request) {
requests.emplace_back(pending.Request, pending.Deadline);
}
}
PendingRequests.swap(requests);
}
}
void SchedulePeriodic() {
Schedule(TDuration::MilliSeconds(200), new TEvents::TEvWakeup());
}
public:
static constexpr EActivityType ActorActivityType() {
return NAMESERVICE;
}
TInterconnectDynamicNameserver(const TIntrusivePtr<TTableNameserverSetup>& setup, const TDuration& pendingPeriod, ui32 /*resolvePoolId*/ )
: TInterconnectNameserverBase<TInterconnectDynamicNameserver>(&TInterconnectDynamicNameserver::StateFunc, NodeTable)
, NodeTable(setup->StaticNodeTable)
, PendingPeriod(pendingPeriod)
{
Y_VERIFY(setup->IsEntriesUnique());
}
STFUNC(StateFunc) {
try {
switch (ev->GetTypeRewrite()) {
HFunc(TEvInterconnect::TEvResolveNode, Handle);
HFunc(TEvResolveAddress, Handle);
HFunc(TEvInterconnect::TEvListNodes, Handle);
HFunc(TEvInterconnect::TEvGetNode, Handle);
HFunc(TEvInterconnect::TEvNodesInfo, HandleUpdate);
CFunc(TEvents::TEvWakeup::EventType, HandlePeriodic);
}
} catch (...) {
LOG_ERROR_IC("ICN09", "%s", CurrentExceptionMessage().c_str());
}
}
void HandleMissedNodeId(TEvInterconnect::TEvResolveNode::TPtr& ev,
const TActorContext& ctx,
const TInstant& deadline) {
if (PendingPeriod) {
if (PendingRequests.size() == 0) {
SchedulePeriodic();
}
PendingRequests.emplace_back(std::move(ev), Min(deadline, Now() + PendingPeriod));
} else {
LOG_ERROR_IC("ICN07", "Unknown nodeId: %u", ev->Get()->Record.GetNodeId());
TInterconnectNameserverBase::HandleMissedNodeId(ev, ctx, deadline);
}
}
void HandleUpdate(TEvInterconnect::TEvNodesInfo::TPtr& ev,
const TActorContext& ctx) {
auto request = ev->Get();
LOG_DEBUG_IC("ICN04", "Update TEvNodesInfo with sz: %lu ", request->Nodes.size());
bool printInfo = false;
ui32 compactionCount = 0;
for (const auto& node : request->Nodes) {
printInfo |= IsNodeUpdated(node.NodeId, node.Address, node.Port);
NodeTable[node.NodeId] = TTableNameserverSetup::TNodeInfo(
node.Address, node.Host, node.ResolveHost, node.Port, node.Location);
for (auto& pending : PendingRequests) {
if (pending.Request && pending.Request->Get()->Record.GetNodeId() == node.NodeId) {
LOG_DEBUG_IC("ICN05", "Pending nodeId: %u discovered", node.NodeId);
RegisterWithSameMailbox(
CreateResolveActor(node.NodeId, NodeTable[node.NodeId], pending.Request->Sender, SelfId(), pending.Deadline));
pending.Request.Reset();
compactionCount++;
}
}
}
if (printInfo) {
PrintInfo();
}
DiscardTimedOutRequests(ctx, compactionCount);
}
void HandlePeriodic(const TActorContext& ctx) {
DiscardTimedOutRequests(ctx, 0);
if (PendingRequests.size()) {
SchedulePeriodic();
}
}
};
IActor* CreateDynamicNameserver(const TIntrusivePtr<TTableNameserverSetup>& setup,
const TDuration& pendingPeriod,
ui32 poolId) {
return new TInterconnectDynamicNameserver(setup, pendingPeriod, poolId);
}
}
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