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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/vespalib/util/host_name.h>
#include <vespa/vespalib/util/signalhandler.h>
#include <vespa/fnet/frt/supervisor.h>
#include <vespa/fnet/frt/invoker.h>
#include <vespa/fnet/transport.h>
#include <vespa/fnet/frt/target.h>
#include <sstream>
#include <unistd.h>
#include <vespa/log/log.h>
LOG_SETUP("testrpcserver");
class FNET_Transport;
class FNET_Scheduler;
class FRT_Supervisor;
namespace testrpcserver {
class RPCHooks;
class TstEnv : public FRT_IRequestWait
{
private:
FNET_Transport *_transport;
FRT_Supervisor *_supervisor;
int _myport;
int _sbport;
RPCHooks *_rpcHooks;
FNET_Transport *getTransport() { return _transport; }
FRT_Supervisor *getSupervisor() { return _supervisor; }
TstEnv(const TstEnv &); // Not used
TstEnv &operator=(const TstEnv &); // Not used
public:
const char * const _id;
explicit TstEnv(int sbp, int myp, const char *n);
virtual ~TstEnv();
int MainLoop();
void shutdown() { getTransport()->ShutDown(false); }
void RequestDone(FRT_RPCRequest* req) override {
if (req->IsError()) {
LOG(error, "registration failed: %s", req->GetErrorMessage());
} else {
LOG(debug, "registered");
}
}
};
class RPCHooks : public FRT_Invokable
{
private:
TstEnv &_env;
RPCHooks(const RPCHooks &); // Not used
RPCHooks &operator=(const RPCHooks &); // Not used
public:
explicit RPCHooks(TstEnv &env);
virtual ~RPCHooks();
void initRPC(FRT_Supervisor *supervisor);
private:
void rpc_listNamesServed(FRT_RPCRequest *req);
void rpc_stop(FRT_RPCRequest *req);
};
RPCHooks::RPCHooks(TstEnv &env)
: _env(env)
{
}
RPCHooks::~RPCHooks()
{
}
void
RPCHooks::initRPC(FRT_Supervisor *supervisor)
{
FRT_ReflectionBuilder rb(supervisor);
//-------------------------------------------------------------------------
rb.DefineMethod("slobrok.callback.listNamesServed", "", "S",
FRT_METHOD(RPCHooks::rpc_listNamesServed), this);
rb.MethodDesc("Look up a rpcserver");
rb.ReturnDesc("names", "The rpcserver names on this server");
//-------------------------------------------------------------------------
rb.DefineMethod("system.stop", "", "",
FRT_METHOD(RPCHooks::rpc_stop), this);
rb.MethodDesc("Shut down the application");
//-------------------------------------------------------------------------
}
void
RPCHooks::rpc_listNamesServed(FRT_RPCRequest *req)
{
std::vector<const char *> rpcsrvlist;
rpcsrvlist.push_back("testrpcsrv/17");
rpcsrvlist.push_back("testrpcsrv/191");
rpcsrvlist.push_back(_env._id);
FRT_Values &dst = *req->GetReturn();
FRT_StringValue *names = dst.AddStringArray(rpcsrvlist.size());
for (uint32_t i = 0; i < rpcsrvlist.size(); ++i) {
dst.SetString(&names[i], rpcsrvlist[i]);
}
if (rpcsrvlist.size() < 1) {
req->SetError(FRTE_RPC_METHOD_FAILED, "no rpcserver names");
}
}
// System API methods
void
RPCHooks::rpc_stop(FRT_RPCRequest *req)
{
(void) req;
LOG(debug, "RPC: Shutdown");
_env.shutdown();
}
TstEnv::TstEnv(int sbp, int myp, const char *n)
: _transport(new FNET_Transport()),
_supervisor(new FRT_Supervisor(_transport)),
_myport(myp),
_sbport(sbp),
_rpcHooks(NULL),
_id(n)
{
_rpcHooks = new RPCHooks(*this);
_rpcHooks->initRPC(getSupervisor());
}
TstEnv::~TstEnv()
{
delete _rpcHooks;
}
int
TstEnv::MainLoop()
{
srandom(time(NULL));
if (! getSupervisor()->Listen(_myport)) {
LOG(error, "TestRpcServer: unable to listen to port %d", _myport);
return 1;
}
std::string myrpcsrv = _id;
std::ostringstream tmp;
tmp << "tcp/" << vespalib::HostName::get() << ":" << _myport;
std::string myspec = tmp.str();
tmp.str("");
tmp << "tcp/" << vespalib::HostName::get() << ":" << _sbport;
std::string sbspec = tmp.str();
FRT_RPCRequest *req = getSupervisor()->AllocRPCRequest();
req->SetMethodName("slobrok.registerRpcServer");
req->GetParams()->AddString(myrpcsrv.c_str());
req->GetParams()->AddString(myspec.c_str());
FRT_Target *slobrok = getSupervisor()->GetTarget(sbspec.c_str());
slobrok->InvokeAsync(req, 5.0, this);
getTransport()->Main();
getTransport()->WaitFinished();
return 0;
}
class App
{
public:
int main(int argc, char **argv) {
int sbport = 2773;
int myport = 2774;
const char *rpcsrvname = "testrpcsrv/17";
int c;
while ((c = getopt(argc, argv, "n:p:s:")) != -1) {
switch (c) {
case 'p':
myport = atoi(optarg);
break;
case 's':
sbport = atoi(optarg);
break;
case 'n':
rpcsrvname = optarg;
break;
default:
LOG(error, "unknown option letter '%c'", c);
return 1;
}
}
TstEnv *mainobj = new TstEnv(sbport, myport, rpcsrvname);
int res = mainobj->MainLoop();
delete mainobj;
return res;
}
};
} // namespace testrpcserver
int main(int argc, char **argv) {
vespalib::SignalHandler::PIPE.ignore();
testrpcserver::App tstdst;
return tstdst.main(argc, argv);
}
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