brpc namingservice的调用栈

1) brpc/channel.cpp

int Channel::Init(const char* ns_url,
                  const char* lb_name,
                  const ChannelOptions* options)

2) brpc/load_balancer_with_naming.cpp

int LoadBalancerWithNaming::Init(const char* ns_url, const char* lb_name,
                                 const NamingServiceFilter* filter,
                                 const GetNamingServiceThreadOptions* options)

int GetNamingServiceThread(
    butil::intrusive_ptr<NamingServiceThread>* nsthread_out,
    const char* url,
    const GetNamingServiceThreadOptions* options)

3) brpc/details/naming_service_thread.cpp

得到当前使用的名字协议和协议类型

eg:"bns://rdev.matrix.all"

service_name: rdev.matrix.all

protocol: bns

static const char* ParseNamingServiceUrl(const char* url, char* protocol) 

4)  brpc/details/naming_service_thread.cpp

int NamingServiceThread::Start(NamingService* naming_service,
                               const std::string& protocol,
                               const std::string& service_name,
                               const GetNamingServiceThreadOptions* opt_in) 

void NamingServiceThread::Run()

5) brpc/periodic_naming_service.cpp

int PeriodicNamingService::RunNamingService(
    const char* service_name, NamingServiceActions* actions)

根据命字服务获取ip地址列表

channel -loadBalancer-NamingService三者之间的关系