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#pragma once
///////////////////////////////////////////////////////////////////
/// \file
/// \brief Example of using local session for communication.
#include <library/cpp/messagebus/test/helper/alloc_counter.h>
#include <library/cpp/messagebus/test/helper/example.h>
#include <library/cpp/messagebus/test/helper/message_handler_error.h>
#include <library/cpp/messagebus/ybus.h>
#include <library/cpp/messagebus/oldmodule/module.h>
namespace NBus {
namespace NTest {
using namespace std;
#define TYPE_HOSTINFOREQUEST 100
#define TYPE_HOSTINFORESPONSE 101
////////////////////////////////////////////////////////////////////
/// \brief DupDetect protocol that common between client and server
////////////////////////////////////////////////////////////////////
/// \brief HostInfo request class
class THostInfoMessage: public TBusMessage {
public:
THostInfoMessage()
: TBusMessage(TYPE_HOSTINFOREQUEST)
{
}
THostInfoMessage(ECreateUninitialized)
: TBusMessage(MESSAGE_CREATE_UNINITIALIZED)
{
}
~THostInfoMessage() override {
}
};
////////////////////////////////////////////////////////////////////
/// \brief HostInfo reply class
class THostInfoReply: public TBusMessage {
public:
THostInfoReply()
: TBusMessage(TYPE_HOSTINFORESPONSE)
{
}
THostInfoReply(ECreateUninitialized)
: TBusMessage(MESSAGE_CREATE_UNINITIALIZED)
{
}
~THostInfoReply() override {
}
};
////////////////////////////////////////////////////////////////////
/// \brief HostInfo protocol that common between client and server
class THostInfoProtocol: public TBusProtocol {
public:
THostInfoProtocol()
: TBusProtocol("HOSTINFO", 0)
{
}
/// serialized protocol specific data into TBusData
void Serialize(const TBusMessage* mess, TBuffer& data) override {
Y_UNUSED(data);
Y_UNUSED(mess);
}
/// deserialized TBusData into new instance of the message
TAutoPtr<TBusMessage> Deserialize(ui16 messageType, TArrayRef<const char> payload) override {
Y_UNUSED(payload);
if (messageType == TYPE_HOSTINFOREQUEST) {
return new THostInfoMessage(MESSAGE_CREATE_UNINITIALIZED);
} else if (messageType == TYPE_HOSTINFORESPONSE) {
return new THostInfoReply(MESSAGE_CREATE_UNINITIALIZED);
} else {
Y_FAIL("unknown");
}
}
};
//////////////////////////////////////////////////////////////
/// \brief HostInfo handler (should convert it to module too)
struct THostInfoHandler: public TBusServerHandlerError {
TBusServerSessionPtr Session;
TBusServerSessionConfig HostInfoConfig;
THostInfoProtocol HostInfoProto;
THostInfoHandler(TBusMessageQueue* queue) {
Session = TBusServerSession::Create(&HostInfoProto, this, HostInfoConfig, queue);
}
void OnMessage(TOnMessageContext& mess) override {
usleep(10 * 1000); /// pretend we are doing something
TAutoPtr<THostInfoReply> reply(new THostInfoReply());
mess.SendReplyMove(reply);
}
TNetAddr GetActualListenAddr() {
return TNetAddr("localhost", Session->GetActualListenPort());
}
};
//////////////////////////////////////////////////////////////
/// \brief DupDetect handler (should convert it to module too)
struct TDupDetectHandler: public TBusClientHandlerError {
TNetAddr ServerAddr;
TBusClientSessionPtr DupDetect;
TBusClientSessionConfig DupDetectConfig;
TExampleProtocol DupDetectProto;
int NumMessages;
int NumReplies;
TDupDetectHandler(const TNetAddr& serverAddr, TBusMessageQueuePtr queue)
: ServerAddr(serverAddr)
{
DupDetect = TBusClientSession::Create(&DupDetectProto, this, DupDetectConfig, queue);
DupDetect->RegisterService("localhost");
}
void Work() {
NumMessages = 10;
NumReplies = 0;
for (int i = 0; i < NumMessages; i++) {
TExampleRequest* mess = new TExampleRequest(&DupDetectProto.RequestCount);
DupDetect->SendMessage(mess, &ServerAddr);
}
}
void OnReply(TAutoPtr<TBusMessage> mess, TAutoPtr<TBusMessage> reply) override {
Y_UNUSED(mess);
Y_UNUSED(reply);
NumReplies++;
}
};
/////////////////////////////////////////////////////////////////
/// \brief DupDetect module
struct TDupDetectModule: public TBusModule {
TNetAddr HostInfoAddr;
TBusClientSessionPtr HostInfoClientSession;
TBusClientSessionConfig HostInfoConfig;
THostInfoProtocol HostInfoProto;
TExampleProtocol DupDetectProto;
TBusServerSessionConfig DupDetectConfig;
TNetAddr ListenAddr;
TDupDetectModule(const TNetAddr& hostInfoAddr)
: TBusModule("DUPDETECTMODULE")
, HostInfoAddr(hostInfoAddr)
{
}
bool Init(TBusMessageQueue* queue) {
HostInfoClientSession = CreateDefaultSource(*queue, &HostInfoProto, HostInfoConfig);
HostInfoClientSession->RegisterService("localhost");
return TBusModule::CreatePrivateSessions(queue);
}
TBusServerSessionPtr CreateExtSession(TBusMessageQueue& queue) override {
TBusServerSessionPtr session = CreateDefaultDestination(queue, &DupDetectProto, DupDetectConfig);
ListenAddr = TNetAddr("localhost", session->GetActualListenPort());
return session;
}
/// entry point into module, first function to call
TJobHandler Start(TBusJob* job, TBusMessage* mess) override {
TExampleRequest* dmess = dynamic_cast<TExampleRequest*>(mess);
Y_UNUSED(dmess);
THostInfoMessage* hmess = new THostInfoMessage();
/// send message to imaginary hostinfo server
job->Send(hmess, HostInfoClientSession, TReplyHandler(), 0, HostInfoAddr);
return TJobHandler(&TDupDetectModule::ProcessHostInfo);
}
/// next handler is executed when all outstanding requests from previous handler is completed
TJobHandler ProcessHostInfo(TBusJob* job, TBusMessage* mess) {
TExampleRequest* dmess = dynamic_cast<TExampleRequest*>(mess);
Y_UNUSED(dmess);
THostInfoMessage* hmess = job->Get<THostInfoMessage>();
THostInfoReply* hreply = job->Get<THostInfoReply>();
EMessageStatus hstatus = job->GetStatus<THostInfoMessage>();
Y_ASSERT(hmess != nullptr);
Y_ASSERT(hreply != nullptr);
Y_ASSERT(hstatus == MESSAGE_OK);
return TJobHandler(&TDupDetectModule::Finish);
}
/// last handler sends reply and returns NULL
TJobHandler Finish(TBusJob* job, TBusMessage* mess) {
Y_UNUSED(mess);
TExampleResponse* reply = new TExampleResponse(&DupDetectProto.ResponseCount);
job->SendReply(reply);
return nullptr;
}
};
}
}
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