295 lines
8.8 KiB
C++
295 lines
8.8 KiB
C++
#include <iostream>
|
|
#include <pv/clientFactory.h>
|
|
|
|
#include <stdio.h>
|
|
#include <epicsStdlib.h>
|
|
#include <epicsGetopt.h>
|
|
#include <pv/logger.h>
|
|
|
|
#include <vector>
|
|
#include <string>
|
|
|
|
#include <pv/convert.h>
|
|
#include <pv/event.h>
|
|
|
|
using namespace std;
|
|
using namespace std::tr1;
|
|
using namespace epics::pvData;
|
|
using namespace epics::pvAccess;
|
|
|
|
#define DEFAULT_TIMEOUT 3.0
|
|
#define DEFAULT_REQUEST "field(value)"
|
|
|
|
double timeOut = DEFAULT_TIMEOUT;
|
|
string request(DEFAULT_REQUEST);
|
|
bool terseMode = false;
|
|
|
|
PVStructure::shared_pointer pvRequest;
|
|
|
|
void usage ()
|
|
{
|
|
fprintf (stderr, "\nUsage: pvrpc [options] <PV name> <values>...\n\n"
|
|
" -h: Help: Print this message\n"
|
|
"options:\n"
|
|
" -r <pv request>: Request, specifies what fields to return and options, default is '%s'\n"
|
|
" -w <sec>: Wait time, specifies timeout, default is %f second(s)\n"
|
|
" -t: Terse mode - print only value, without name\n"
|
|
" -d: Enable debug output"
|
|
"\nExample: pvrpc example001 1.234 10 test\n\n"
|
|
, DEFAULT_REQUEST, DEFAULT_TIMEOUT);
|
|
}
|
|
|
|
|
|
class ChannelRPCRequesterImpl : public ChannelRPCRequester
|
|
{
|
|
auto_ptr<Event> m_event;
|
|
public:
|
|
shared_ptr<epics::pvData::PVStructure> pvResponse;
|
|
ChannelRPCRequesterImpl(String channelName)
|
|
{
|
|
resetEvent();
|
|
}
|
|
|
|
virtual void channelRPCConnect (const epics::pvData::Status &status, ChannelRPC::shared_pointer const &channelRPC)
|
|
{
|
|
m_event->signal();
|
|
}
|
|
|
|
virtual void requestDone (const epics::pvData::Status &status, epics::pvData::PVStructure::shared_pointer const &pvResponse)
|
|
{
|
|
this->pvResponse = pvResponse;
|
|
m_event->signal();
|
|
}
|
|
|
|
virtual String getRequesterName()
|
|
{
|
|
return "ChannelRPCRequesterImpl";
|
|
};
|
|
|
|
virtual void message(String message,MessageType messageType)
|
|
{
|
|
std::cout << "[" << getRequesterName() << "] message(" << message << ", " << getMessageTypeName(messageType) << ")" << std::endl;
|
|
}
|
|
|
|
void resetEvent()
|
|
{
|
|
m_event.reset(new Event());
|
|
}
|
|
|
|
bool waitUntilDone(double timeOut)
|
|
{
|
|
return m_event->wait(timeOut);
|
|
}
|
|
};
|
|
|
|
class ChannelRequesterImpl : public ChannelRequester
|
|
{
|
|
private:
|
|
Event m_event;
|
|
|
|
public:
|
|
|
|
virtual String getRequesterName()
|
|
{
|
|
return "ChannelRequesterImpl";
|
|
};
|
|
|
|
virtual void message(String message,MessageType messageType)
|
|
{
|
|
std::cout << "[" << getRequesterName() << "] message(" << message << ", " << getMessageTypeName(messageType) << ")" << std::endl;
|
|
}
|
|
|
|
virtual void channelCreated(const epics::pvData::Status& status, Channel::shared_pointer const & channel)
|
|
{
|
|
if (status.isSuccess())
|
|
{
|
|
// show warning
|
|
if (!status.isOk())
|
|
{
|
|
std::cout << "[" << channel->getChannelName() << "] channel create: " << status.toString() << std::endl;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
std::cout << "[" << channel->getChannelName() << "] failed to create a channel: " << status.toString() << std::endl;
|
|
}
|
|
}
|
|
|
|
virtual void channelStateChange(Channel::shared_pointer const & channel, Channel::ConnectionState connectionState)
|
|
{
|
|
if (connectionState == Channel::CONNECTED)
|
|
{
|
|
m_event.signal();
|
|
}
|
|
/*
|
|
else if (connectionState != Channel::DESTROYED)
|
|
{
|
|
std::cout << "[" << channel->getChannelName() << "] channel state change: " << Channel::ConnectionStateNames[connectionState] << std::endl;
|
|
}
|
|
*/
|
|
}
|
|
|
|
bool waitUntilConnected(double timeOut)
|
|
{
|
|
return m_event.wait(timeOut);
|
|
}
|
|
};
|
|
|
|
/*+**************************************************************************
|
|
*
|
|
* Function: main
|
|
*
|
|
* Description: pvrpc main()
|
|
* Evaluate command line options, set up CA, connect the
|
|
* channels, print the data as requested
|
|
*
|
|
* Arg(s) In: [options] <pv-name> <values>...
|
|
*
|
|
* Arg(s) Out: none
|
|
*
|
|
* Return(s): Standard return code (0=success, 1=error)
|
|
*
|
|
**************************************************************************-*/
|
|
|
|
int main (int argc, char *argv[])
|
|
{
|
|
int opt; /* getopt() current option */
|
|
bool debug = false;
|
|
|
|
setvbuf(stdout,NULL,_IOLBF,BUFSIZ); /* Set stdout to line buffering */
|
|
|
|
while ((opt = getopt(argc, argv, ":hr:w:t")) != -1) {
|
|
switch (opt) {
|
|
case 'h': /* Print usage */
|
|
usage();
|
|
return 0;
|
|
case 'w': /* Set CA timeout value */
|
|
if(epicsScanDouble(optarg, &timeOut) != 1)
|
|
{
|
|
fprintf(stderr, "'%s' is not a valid timeout value "
|
|
"- ignored. ('cainfo -h' for help.)\n", optarg);
|
|
timeOut = DEFAULT_TIMEOUT;
|
|
}
|
|
break;
|
|
case 'r': /* Set CA timeout value */
|
|
request = optarg;
|
|
break;
|
|
case 't': /* Terse mode */
|
|
terseMode = true;
|
|
break;
|
|
case 'd': /* Debug log level */
|
|
debug = true;
|
|
break;
|
|
case '?':
|
|
fprintf(stderr,
|
|
"Unrecognized option: '-%c'. ('pvrpc -h' for help.)\n",
|
|
optopt);
|
|
return 1;
|
|
case ':':
|
|
fprintf(stderr,
|
|
"Option '-%c' requires an argument. ('pvrpc -h' for help.)\n",
|
|
optopt);
|
|
return 1;
|
|
default :
|
|
usage();
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
if (argc <= optind)
|
|
{
|
|
fprintf(stderr, "No pv name specified. ('pvrpc -h' for help.)\n");
|
|
return 1;
|
|
}
|
|
string pvName = argv[optind++];
|
|
|
|
|
|
int nVals = argc - optind; /* Remaining arg list are PV names */
|
|
if (nVals < 1)
|
|
{
|
|
fprintf(stderr, "No value(s) specified. ('pvrpc -h' for help.)\n");
|
|
return 1;
|
|
}
|
|
|
|
vector<string> values; /* Array of values */
|
|
for (int n = 0; optind < argc; n++, optind++)
|
|
values.push_back(argv[optind]); /* Copy values from command line */
|
|
|
|
try {
|
|
pvRequest = getCreateRequest()->createRequest(request);
|
|
} catch (std::exception &ex) {
|
|
printf("failed to parse request string: %s\n", ex.what());
|
|
return 1;
|
|
}
|
|
|
|
SET_LOG_LEVEL(debug ? logLevelDebug : logLevelError);
|
|
|
|
|
|
ClientFactory::start();
|
|
ChannelProvider::shared_pointer provider = getChannelAccess()->getProvider("pvAccess");
|
|
|
|
bool allOK = true;
|
|
|
|
try
|
|
{
|
|
do
|
|
{
|
|
// first connect
|
|
shared_ptr<ChannelRequesterImpl> channelRequesterImpl(new ChannelRequesterImpl());
|
|
Channel::shared_pointer channel = provider->createChannel(pvName, channelRequesterImpl);
|
|
|
|
if (channelRequesterImpl->waitUntilConnected(timeOut))
|
|
{
|
|
shared_ptr<ChannelRPCRequesterImpl> rpcRequesterImpl(new ChannelRPCRequesterImpl(channel->getChannelName()));
|
|
|
|
// A PVStructure is sent at ChannelRPC connect time but we don't use it, so send an empty one
|
|
StringArray fieldNames;
|
|
FieldConstPtrArray fields;
|
|
PVStructure::shared_pointer nothing(
|
|
new PVStructure(getFieldCreate()->createStructure(fieldNames, fields)));
|
|
|
|
ChannelRPC::shared_pointer channelRPC = channel->createChannelRPC(rpcRequesterImpl, nothing);
|
|
allOK &= rpcRequesterImpl->waitUntilDone(timeOut);
|
|
std::cout << "connected" << std::endl;
|
|
if (allOK)
|
|
{
|
|
rpcRequesterImpl->resetEvent();
|
|
channelRPC->request(pvRequest, false);
|
|
allOK &= rpcRequesterImpl->waitUntilDone(timeOut);
|
|
if (allOK)
|
|
{
|
|
String s;
|
|
rpcRequesterImpl->pvResponse->toString(&s);
|
|
std::cout << s << std::endl;
|
|
}
|
|
else
|
|
{
|
|
std::cout << "Error" << std::endl;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
allOK = false;
|
|
channel->destroy();
|
|
std::cout << "[" << channel->getChannelName() << "] connection timeout" << std::endl;
|
|
break;
|
|
}
|
|
}
|
|
while (false);
|
|
} catch (std::out_of_range& oor) {
|
|
allOK = false;
|
|
std::cout << "parse error: not enough of values" << std::endl;
|
|
} catch (std::exception& ex) {
|
|
allOK = false;
|
|
std::cout << ex.what() << std::endl;
|
|
} catch (...) {
|
|
allOK = false;
|
|
std::cout << "unknown exception caught" << std::endl;
|
|
}
|
|
|
|
ClientFactory::stop();
|
|
|
|
return allOK ? 0 : 1;
|
|
}
|