From 993c556000a414011626770540678948f16eaa9e Mon Sep 17 00:00:00 2001
From: lichao <lichao@aiotlink.com>
Date: 星期三, 02 六月 2021 17:40:50 +0800
Subject: [PATCH] center restart with new shm; set center node ssn.

---
 box/center.cpp |   75 +++++++++++++++++++++++++++----------
 1 files changed, 55 insertions(+), 20 deletions(-)

diff --git a/box/center.cpp b/box/center.cpp
index e77c38f..020d1bf 100644
--- a/box/center.cpp
+++ b/box/center.cpp
@@ -17,7 +17,10 @@
  */
 #include "center.h"
 #include "center_topic_node.h"
+#include "io_service.h"
 #include "node_center.h"
+#include "tcp_proxy.h"
+#include "tcp_server.h"
 #include <chrono>
 
 using namespace std::chrono;
@@ -42,18 +45,6 @@
 	}
 }
 
-Handler Combine(const Handler &h1, const Handler &h2)
-{
-	return [h1, h2](ShmSocket &socket, bhome_msg::MsgI &msg, bhome_msg::BHMsgHead &head) {
-		return h1(socket, msg, head) || h2(socket, msg, head);
-	};
-}
-template <class... H>
-Handler Combine(const Handler &h0, const Handler &h1, const Handler &h2, const H &...rest)
-{
-	return Combine(Combine(h0, h1), h2, rest...);
-}
-
 #define CASE_ON_MSG_TYPE(MsgTag)                                                         \
 	case kMsgType##MsgTag:                                                               \
 		Dispatch<Msg##MsgTag>(                                                           \
@@ -65,7 +56,7 @@
 	return [&](auto &&rep_body) {
 		auto reply_head(InitMsgHead(GetType(rep_body), center->id(), head.ssn_id(), head.msg_id()));
 		MQInfo remote = {head.route(0).mq_id(), head.route(0).abs_addr()};
-		MsgI msg;
+		MsgI msg(socket.shm());
 		if (msg.Make(reply_head, rep_body)) {
 			DEFER1(msg.Release(););
 			center->SendAllocMsg(socket, remote, msg);
@@ -73,7 +64,7 @@
 	};
 }
 
-bool AddCenter(std::shared_ptr<Synced<NodeCenter>> center_ptr)
+bool AddCenter(std::shared_ptr<Synced<NodeCenter>> center_ptr, SharedMemory &shm, TcpProxy &tcp_proxy)
 {
 	// command
 	auto OnCommand = [center_ptr](ShmSocket &socket, ShmMsgQueue::RawData &cmd) -> bool {
@@ -87,13 +78,49 @@
 		auto onInit = [&](const int64_t request) {
 			return center->OnNodeInit(socket, request);
 		};
-		BHCenterHandleInit(onInit);
+		BHCenterHandleInit(socket.shm(), onInit);
 		center->OnTimer();
 	};
 
-	auto OnCenter = [=](ShmSocket &socket, MsgI &msg, BHMsgHead &head) -> bool {
+	auto OnCenter = [=, &tcp_proxy](ShmSocket &socket, MsgI &msg, BHMsgHead &head) -> bool {
 		auto &center = *center_ptr;
 		auto replyer = MakeReplyer(socket, head, center);
+
+		if (!head.dest().ip().empty()) { // other host, proxy
+			auto valid = [&]() { return head.route_size() == 1; };
+			if (!valid()) { return false; }
+
+			if (head.type() == kMsgTypeRequestTopic) {
+				typedef MsgRequestTopicReply Reply;
+				Reply reply;
+				if (!center->CheckMsg(head, reply)) {
+					replyer(reply);
+				} else {
+					auto onResult = [&center](BHMsgHead &head, std::string body_content) {
+						if (head.route_size() > 0) {
+							auto &back = head.route(head.route_size() - 1);
+							MQInfo dest = {back.mq_id(), back.abs_addr()};
+							head.mutable_route()->RemoveLast();
+							center->PassRemoteReplyToLocal(dest, head, std::move(body_content));
+						}
+					};
+					uint16_t port = head.dest().port();
+					if (port == 0) {
+						port = kBHCenterPort;
+					}
+					if (!tcp_proxy.Request(head.dest().ip(), port, msg.content(), onResult)) {
+						replyer(MakeReply<Reply>(eError, "send request failed."));
+					} else {
+						// success
+					}
+				}
+				return true;
+			} else {
+				// ignore other msgs for now.
+			}
+			return false;
+		}
+
 		switch (head.type()) {
 			CASE_ON_MSG_TYPE(ProcInit);
 			CASE_ON_MSG_TYPE(Register);
@@ -106,7 +133,7 @@
 		default: return false;
 		}
 	};
-	BHCenter::Install("#center.main", OnCenter, OnCommand, OnCenterIdle, BHTopicCenterAddress(), 1000);
+	BHCenter::Install("@center.main", OnCenter, OnCommand, OnCenterIdle, BHTopicCenterAddress(shm), 1000);
 
 	auto OnBusIdle = [=](ShmSocket &socket) {};
 	auto OnBusCmd = [=](ShmSocket &socket, ShmMsgQueue::RawData &val) { return false; };
@@ -142,7 +169,7 @@
 		}
 	};
 
-	BHCenter::Install("#center.bus", OnPubSub, OnBusCmd, OnBusIdle, BHTopicBusAddress(), 1000);
+	BHCenter::Install("@center.bus", OnPubSub, OnBusCmd, OnBusIdle, BHTopicBusAddress(shm), 1000);
 
 	return true;
 }
@@ -166,8 +193,11 @@
 BHCenter::BHCenter(Socket::Shm &shm)
 {
 	auto nsec = NodeTimeoutSec();
-	auto center_ptr = std::make_shared<Synced<NodeCenter>>("#bhome_center", nsec, nsec * 3); // *3 to allow other clients to finish sending msgs.
-	AddCenter(center_ptr);
+	auto center_ptr = std::make_shared<Synced<NodeCenter>>("@bhome_center", nsec, nsec * 3); // *3 to allow other clients to finish sending msgs.
+	io_service_.reset(new IoService);
+	tcp_proxy_.reset(new TcpProxy(io_service_->io()));
+
+	AddCenter(center_ptr, shm, *tcp_proxy_);
 
 	for (auto &kv : Centers()) {
 		auto &info = kv.second;
@@ -175,7 +205,9 @@
 	}
 
 	topic_node_.reset(new CenterTopicNode(center_ptr, shm));
+	tcp_server_.reset(new TcpServer(io_service_->io(), kBHCenterPort, center_ptr));
 }
+
 BHCenter::~BHCenter() { Stop(); }
 
 bool BHCenter::Start()
@@ -190,6 +222,9 @@
 
 bool BHCenter::Stop()
 {
+	tcp_proxy_.reset();
+	tcp_server_.reset();
+	io_service_.reset();
 	topic_node_->Stop();
 	for (auto &kv : sockets_) {
 		kv.second->Stop();

--
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