From cf05ea3d9f43e4e84d621e1f9d54cbef552b6e2b Mon Sep 17 00:00:00 2001
From: lichao <lichao@aiotlink.com>
Date: 星期二, 18 五月 2021 16:53:28 +0800
Subject: [PATCH] fix center init mutex.

---
 src/bh_api.cpp |  125 +++++++++++++++++++++++++++++++++++------
 1 files changed, 107 insertions(+), 18 deletions(-)

diff --git a/src/bh_api.cpp b/src/bh_api.cpp
index cdf2e96..b37eaae 100644
--- a/src/bh_api.cpp
+++ b/src/bh_api.cpp
@@ -1,6 +1,7 @@
 #include "bh_api.h"
 #include "defs.h"
 #include "topic_node.h"
+#include <cstdio>
 #include <memory>
 
 using namespace bhome_shm;
@@ -8,10 +9,47 @@
 
 namespace
 {
+std::string GetProcExe()
+{
+	auto f = fopen("/proc/self/stat", "rb");
+	if (f) {
+		DEFER1(fclose(f));
+		char buf[100] = {0};
+		int n = fread(buf, 1, sizeof(buf), f);
+		if (n > 0) {
+			std::string s(buf, n);
+			auto start = s.find('(');
+			if (start != std::string::npos) {
+				++start;
+				auto end = s.find(')', start);
+				return s.substr(start, end - start);
+			}
+		}
+	}
+	return std::to_string(getpid());
+}
+std::unique_ptr<TopicNode> &ProcNodePtr()
+{
+	static std::mutex mtx;
+	std::lock_guard<std::mutex> lk(mtx);
+
+	static std::unique_ptr<TopicNode> ptr;
+	if (!ptr && GlobalInit(BHomeShm())) {
+		auto InitLog = []() {
+			auto id = GetProcExe();
+			char path[200] = {0};
+			sprintf(path, "/opt/vasystem/valog/bhshmq_node_%s.log", id.c_str());
+			ns_log::AddLog(path);
+			return true;
+		};
+		static bool init_log = InitLog();
+		ptr.reset(new TopicNode(BHomeShm()));
+	}
+	return ptr;
+}
 TopicNode &ProcNode()
 {
-	static TopicNode node(BHomeShm());
-	return node;
+	return *ProcNodePtr();
 }
 
 class TmpPtr : private boost::noncopyable
@@ -70,12 +108,10 @@
 }
 
 template <class MsgIn, class MsgOut = MsgCommonReply>
-bool BHApiIn1Out1(bool (TopicNode::*mfunc)(MsgIn &, MsgOut &, const int),
-                  const void *request,
-                  const int request_len,
-                  void **reply,
-                  int *reply_len,
-                  const int timeout_ms)
+bool BHApi_In1_Out1(bool (TopicNode::*mfunc)(MsgIn &, MsgOut &, const int),
+                    const void *request, const int request_len,
+                    void **reply, int *reply_len,
+                    const int timeout_ms)
 {
 	MsgIn input;
 	if (!input.ParseFromArray(request, request_len)) {
@@ -83,7 +119,32 @@
 		return false;
 	}
 	MsgOut msg_reply;
+	auto &ptr = ProcNodePtr();
+	if (!ptr) {
+		SetLastError(eNotFound, "center not started.");
+		return 0;
+	}
+
 	return (ProcNode().*mfunc)(input, msg_reply, timeout_ms) &&
+	       PackOutput(msg_reply, reply, reply_len);
+}
+
+template <class MsgIn0, class MsgIn1, class MsgOut = MsgCommonReply>
+bool BHApi_In2_Out1(bool (TopicNode::*mfunc)(MsgIn0 &, MsgIn1 &, MsgOut &, const int),
+                    const void *in0, const int in0_len,
+                    const void *in1, const int in1_len,
+                    void **reply, int *reply_len,
+                    const int timeout_ms)
+{
+	MsgIn0 input0;
+	MsgIn1 input1;
+	if (!input0.ParseFromArray(in0, in0_len) ||
+	    !input1.ParseFromArray(in1, in1_len)) {
+		SetLastError(eInvalidInput, "invalid input.");
+		return false;
+	}
+	MsgOut msg_reply;
+	return (ProcNode().*mfunc)(input0, input1, msg_reply, timeout_ms) &&
 	       PackOutput(msg_reply, reply, reply_len);
 }
 
@@ -101,7 +162,11 @@
 
 int BHRegister(const void *proc_info, const int proc_info_len, void **reply, int *reply_len, const int timeout_ms)
 {
-	return BHApiIn1Out1<ProcInfo>(&TopicNode::Register, proc_info, proc_info_len, reply, reply_len, timeout_ms);
+	return BHApi_In1_Out1<ProcInfo>(&TopicNode::Register, proc_info, proc_info_len, reply, reply_len, timeout_ms);
+}
+int BHUnregister(const void *proc_info, const int proc_info_len, void **reply, int *reply_len, const int timeout_ms)
+{
+	return BHApi_In1_Out1<ProcInfo>(&TopicNode::Unregister, proc_info, proc_info_len, reply, reply_len, timeout_ms);
 }
 
 int BHHeartbeatEasy(const int timeout_ms)
@@ -111,17 +176,27 @@
 
 int BHHeartbeat(const void *proc_info, const int proc_info_len, void **reply, int *reply_len, const int timeout_ms)
 {
-	return BHApiIn1Out1<ProcInfo>(&TopicNode::Heartbeat, proc_info, proc_info_len, reply, reply_len, timeout_ms);
+	return BHApi_In1_Out1<ProcInfo>(&TopicNode::Heartbeat, proc_info, proc_info_len, reply, reply_len, timeout_ms);
 }
 
 int BHRegisterTopics(const void *topics, const int topics_len, void **reply, int *reply_len, const int timeout_ms)
 {
-	return BHApiIn1Out1<MsgTopicList>(&TopicNode::ServerRegisterRPC, topics, topics_len, reply, reply_len, timeout_ms);
+	return BHApi_In1_Out1<MsgTopicList>(&TopicNode::ServerRegisterRPC, topics, topics_len, reply, reply_len, timeout_ms);
+}
+
+int BHQueryTopicAddress(const void *remote, const int remote_len,
+                        const void *topic, const int topic_len,
+                        void **reply, int *reply_len,
+                        const int timeout_ms)
+{
+	return BHApi_In2_Out1<BHAddress, MsgQueryTopic, MsgQueryTopicReply>(
+	    &TopicNode::QueryTopicAddress,
+	    remote, remote_len, topic, topic_len, reply, reply_len, timeout_ms);
 }
 
 int BHSubscribeTopics(const void *topics, const int topics_len, void **reply, int *reply_len, const int timeout_ms)
 {
-	return BHApiIn1Out1<MsgTopicList>(&TopicNode::Subscribe, topics, topics_len, reply, reply_len, timeout_ms);
+	return BHApi_In1_Out1<MsgTopicList>(&TopicNode::Subscribe, topics, topics_len, reply, reply_len, timeout_ms);
 }
 
 int BHPublish(const void *msgpub,
@@ -157,19 +232,23 @@
 	return false;
 }
 
-int BHAsyncRequest(const void *request,
+int BHAsyncRequest(const void *remote,
+                   const int remote_len,
+                   const void *request,
                    const int request_len,
                    void **msg_id,
                    int *msg_id_len)
 {
+	BHAddress dest;
 	MsgRequestTopic req;
-	if (!req.ParseFromArray(request, request_len)) {
+	if (!dest.ParseFromArray(remote, remote_len) ||
+	    !req.ParseFromArray(request, request_len)) {
 		SetLastError(eInvalidInput, "invalid input.");
 		return false;
 	}
 	std::string str_msg_id;
 	MsgRequestTopicReply out_msg;
-	if (ProcNode().ClientAsyncRequest(req, str_msg_id)) {
+	if (ProcNode().ClientAsyncRequest(dest, req, str_msg_id)) {
 		if (!msg_id || !msg_id_len) {
 			return true;
 		}
@@ -184,7 +263,9 @@
 	return false;
 }
 
-int BHRequest(const void *request,
+int BHRequest(const void *remote,
+              const int remote_len,
+              const void *request,
               const int request_len,
               void **proc_id,
               int *proc_id_len,
@@ -192,14 +273,16 @@
               int *reply_len,
               const int timeout_ms)
 {
+	BHAddress dest;
 	MsgRequestTopic req;
-	if (!req.ParseFromArray(request, request_len)) {
+	if (!dest.ParseFromArray(remote, remote_len) ||
+	    !req.ParseFromArray(request, request_len)) {
 		SetLastError(eInvalidInput, "invalid input.");
 		return false;
 	}
 	std::string proc;
 	MsgRequestTopicReply out_msg;
-	if (ProcNode().ClientSyncRequest(req, proc, out_msg, timeout_ms)) {
+	if (ProcNode().ClientSyncRequest(dest, req, proc, out_msg, timeout_ms)) {
 		TmpPtr pproc(proc);
 		if (pproc && PackOutput(out_msg, reply, reply_len)) {
 			pproc.ReleaseTo(proc_id, proc_id_len);
@@ -280,6 +363,12 @@
 	free(data);
 }
 
+int BHCleanup()
+{
+	ProcNodePtr().reset();
+	return 0;
+}
+
 int BHGetLastError(void **msg, int *msg_len)
 {
 	int ec = 0;

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