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#include "services.h"
#include <library/cpp/actors/core/actorsystem.h>
#include <library/cpp/actors/core/hfunc.h>
#include <library/cpp/actors/core/interconnect.h>
#include <library/cpp/actors/core/actor_bootstrapped.h>
#include <util/generic/set.h>
#include <util/generic/vector.h>
class TExampleLookupRequestActor : public TActor<TExampleLookupRequestActor> {
const TActorId Owner;
const TActorId Replica;
const TString Key;
void Registered(TActorSystem* sys, const TActorId&) override {
const auto flags = IEventHandle::FlagTrackDelivery | IEventHandle::FlagSubscribeOnSession;
sys->Send(new IEventHandle(Replica, SelfId(), new TEvExample::TEvReplicaLookup(Key), flags));
}
void PassAway() override {
const ui32 replicaNode = Replica.NodeId();
if (replicaNode != SelfId().NodeId()) {
const TActorId &interconnectProxy = TlsActivationContext->ExecutorThread.ActorSystem->InterconnectProxy(Replica.NodeId());
Send(interconnectProxy, new TEvents::TEvUnsubscribe());
}
return IActor::PassAway();
}
void Handle(TEvExample::TEvReplicaInfo::TPtr &ev) {
Send(Owner, ev->Release().Release());
return PassAway();
}
void HandleUndelivered() {
Send(Owner, new TEvExample::TEvReplicaInfo(Key));
return PassAway();
}
public:
static constexpr IActor::EActivityType ActorActivityType() {
// define app-specific activity tag to track elapsed cpu | handled events | actor count in Solomon
return EActorActivity::ACTORLIB_COMMON;
}
TExampleLookupRequestActor(TActorId owner, TActorId replica, const TString &key)
: TActor(&TThis::StateWork)
, Owner(owner)
, Replica(replica)
, Key(key)
{}
STFUNC(StateWork) {
switch (ev->GetTypeRewrite()) {
hFunc(TEvExample::TEvReplicaInfo, Handle);
sFunc(TEvents::TEvUndelivered, HandleUndelivered);
sFunc(TEvInterconnect::TEvNodeDisconnected, HandleUndelivered);
default:
break;
}
}
};
class TExampleLookupActor : public TActorBootstrapped<TExampleLookupActor> {
TIntrusiveConstPtr<TExampleStorageConfig> Config;
const TString Key;
const TActorId ReplyTo;
TVector<TActorId> RequestActors;
ui32 TotalReplicas = 0;
ui32 RepliedSuccess = 0;
ui32 RepliedError = 0;
TSet<TString> Payloads;
void Handle(TEvExample::TEvReplicaInfo::TPtr &ev) {
NActorsExample::TEvReplicaInfo &record = ev->Get()->Record;
if (record.PayloadSize()) {
++RepliedSuccess;
for (const TString &payload : record.GetPayload()) {
Payloads.insert(payload);
}
}
else {
++RepliedError;
}
const ui32 majority = (TotalReplicas / 2 + 1);
if (RepliedSuccess == majority || (RepliedSuccess + RepliedError == TotalReplicas))
return ReplyAndDie();
}
void ReplyAndDie() {
TVector<TString> replyPayloads(Payloads.begin(), Payloads.end());
Send(ReplyTo, new TEvExample::TEvInfo(Key, std::move(replyPayloads)));
return PassAway();
}
public:
static constexpr IActor::EActivityType ActorActivityType() {
// define app-specific activity tag to track elapsed cpu | handled events | actor count in Solomon
return EActorActivity::ACTORLIB_COMMON;
}
TExampleLookupActor(TExampleStorageConfig *config, const TString &key, TActorId replyTo)
: Config(config)
, Key(key)
, ReplyTo(replyTo)
{}
void Bootstrap() {
Y_VERIFY(Config->Replicas.size() > 0);
TotalReplicas = Config->Replicas.size();
RequestActors.reserve(TotalReplicas);
for (const auto &replica : Config->Replicas) {
const TActorId requestActor = Register(new TExampleLookupRequestActor(SelfId(), replica, Key));
RequestActors.emplace_back(requestActor);
}
Become(&TThis::StateWork);
}
STFUNC(StateWork) {
switch (ev->GetTypeRewrite()) {
hFunc(TEvExample::TEvReplicaInfo, Handle);
default:
break;
}
}
};
IActor* CreateLookupActor(TExampleStorageConfig *config, const TString &key, TActorId replyTo) {
return new TExampleLookupActor(config, key, replyTo);
}
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