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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/fnet/frt/supervisor.h>
#include <vespa/fnet/frt/target.h>
#include <vespa/fnet/frt/rpcrequest.h>
#include <vespa/vespalib/util/signalhandler.h>
#include <unistd.h>
#include <sstream>
#include <vespa/log/log.h>
LOG_SETUP("vespa-ping-configproxy");
class PingProxy
{
private:
std::unique_ptr<fnet::frt::StandaloneFRT> _server;
FRT_Target *_target;
public:
PingProxy(const PingProxy &) = delete;
PingProxy &operator=(const PingProxy &) = delete;
PingProxy() : _server(), _target(nullptr) {}
~PingProxy();
int usage(const char *self);
void initRPC(const char *spec);
void finiRPC();
int main(int argc, char **argv);
};
PingProxy::~PingProxy()
{
LOG_ASSERT(!_server);
LOG_ASSERT(_target == nullptr);
}
int
PingProxy::usage(const char *self)
{
fprintf(stderr, "usage: %s\n", self);
fprintf(stderr, "-s [server] (server hostname, default localhost)\n");
fprintf(stderr, "-p [port] (server port number, default 19090)\n");
return 1;
}
void
PingProxy::initRPC(const char *spec)
{
_server = std::make_unique<fnet::frt::StandaloneFRT>();
_target = _server->supervisor().GetTarget(spec);
}
void
PingProxy::finiRPC()
{
if (_target != nullptr) {
_target->internal_subref();
_target = nullptr;
}
_server.reset();
}
int
PingProxy::main(int argc, char **argv)
{
int retval = 0;
bool debugging = false;
int c = -1;
const char *serverHost = "localhost";
int clientTimeout = 5;
int serverPort = 19090;
while ((c = getopt(argc, argv, "w:s:p:dh")) != -1) {
switch (c) {
case 'w':
clientTimeout = atoi(optarg);
break;
case 's':
serverHost = optarg;
break;
case 'p':
serverPort = atoi(optarg);
break;
case 'd':
debugging = true;
break;
case '?':
default:
retval = 1;
[[fallthrough]];
case 'h':
usage(argv[0]);
return retval;
}
}
if (serverPort == 0) {
usage(argv[0]);
return 1;
}
std::ostringstream tmp;
tmp << "tcp/";
tmp << serverHost;
tmp << ":";
tmp << serverPort;
std::string sspec = tmp.str();
const char *spec = sspec.c_str();
if (debugging) {
printf("connecting to '%s'\n", spec);
LOG(info, "connecting to '%s'\n", spec);
}
try {
initRPC(spec);
} catch (std::exception& ex) {
LOG(error, "Got exception while initializing RPC: '%s'", ex.what());
return 1;
}
FRT_RPCRequest *req = _server->supervisor().AllocRPCRequest();
req->SetMethodName("ping");
_target->InvokeSync(req, clientTimeout); // seconds
if (req->IsError()) {
retval = 1;
fprintf(stderr, "error %d: %s\n",
req->GetErrorCode(), req->GetErrorMessage());
} else {
FRT_Values &answer = *(req->GetReturn());
const char *atypes = answer.GetTypeString();
if (strcmp(atypes, "i") == 0) {
if (debugging) {
printf("ping %d\n", answer[0]._intval32);
}
} else {
fprintf(stderr, "unexpected return types in RPC answer: '%s'\n", atypes);
retval = 1;
}
}
req->internal_subref();
finiRPC();
return retval;
}
int main(int argc, char **argv) {
vespalib::SignalHandler::PIPE.ignore();
PingProxy app;
return app.main(argc, argv);
}
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