PVStructure::shared_pointer PvaClientRPC::request(PVStructure::shared_pointer const & pvArgument)
{
checkRPCState();
{
Lock xx(mutex);
if(rpcState!=rpcIdle) {
Channel::shared_pointer chan(channel.lock());
string channelName("disconnected");
if(chan) channelName = chan->getChannelName();
string message = "channel "
+ channelName
+ " PvaClientRPC::request request aleady active ";
throw std::runtime_error(message);
}
rpcState = rpcActive;
}
channelRPC->request(pvArgument);
if(responseTimeout>0.0) {
waitForDone.wait(responseTimeout);
} else {
waitForDone.wait();
}
Lock xx(mutex);
if(rpcState!=rpcComplete) {
Channel::shared_pointer chan(channel.lock());
string channelName("disconnected");
if(chan) channelName = chan->getChannelName();
string message = "channel "
+ channelName
+ " PvaClientRPC::request request timeout ";
throw RPCRequestException(Status::STATUSTYPE_ERROR,message);
}
rpcState = rpcIdle;
if(requestStatus.isOK()) return pvResponse;
Channel::shared_pointer chan(channel.lock());
string channelName("disconnected");
if(chan) channelName = chan->getChannelName();
string message = "channel "
+ channelName
+ " PvaClientRPC::request status ";
message += requestStatus.getMessage();
throw RPCRequestException(Status::STATUSTYPE_ERROR,message);
}
PVStructurePtr ExampleHelloRPC::request(PVStructurePtr const &pvArgument)
throw (RPCRequestException)
{
PVStringPtr pvFrom = pvArgument->getSubField<PVString>("value");
if(!pvFrom) {
stringstream ss;
ss << " expected string subfield named value. got\n" << pvArgument;
throw RPCRequestException(
Status::STATUSTYPE_ERROR,ss.str());
}
PVStringPtr pvTo = pvResult->getSubField<PVString>("value");
pvTo->put("Hello " + pvFrom->get());
return pvResult;
}
void PvaClientRPC::connect()
{
if(PvaClient::getDebug()) cout << "PvaClientRPC::connect\n";
issueConnect();
Status status = waitConnect();
if(status.isOK()) return;
Channel::shared_pointer chan(channel.lock());
string channelName("disconnected");
if(chan) channelName = chan->getChannelName();
string message = string("channel ")
+ channelName
+ " PvaClientRPC::connect "
+ status.getMessage();
throw RPCRequestException(Status::STATUSTYPE_ERROR,message);
}
