epics::pvData::PVStructurePtr HelloService::request(
epics::pvData::PVStructurePtr const & pvArgument
) throw (pvAccess::RPCRequestException)
{
// Extract the arguments. Just one in this case.
// Report an error by throwing a RPCRequestException
epics::pvData::PVStringPtr nameField = pvArgument->getStringField("personsname");
if (!nameField)
{
throw pvAccess::RPCRequestException(Status::STATUSTYPE_ERROR,
"PVString field with name 'personsname' expected.");
}
// Create the result structure of the data interface.
PVStructurePtr result(
getPVDataCreate()->createPVStructure(makeResponseStructure()));
// Extract from the constructed data interface the value of
// "greeting" field. The value we'll return, is "Hello" concatenated
// to the value of the input parameter called "personsname".
PVStringPtr greetingValueField = result->getStringField("greeting");
greetingValueField->put("Hello " + nameField->get());
return result;
}
static void setValue(PVUnionPtr const &pvUnion, double value)
{
UnionConstPtr u = pvUnion->getUnion();
FieldConstPtr field = u->getField(0);
Type type = field->getType();
if(type==scalar) {
ScalarConstPtr scalar = static_pointer_cast<const Scalar>(field);
ScalarType scalarType = scalar->getScalarType();
if(scalarType==pvDouble) {
PVDoublePtr pvValue = static_pointer_cast<PVDouble>(
pvDataCreate->createPVScalar(pvDouble));
pvValue->put(value);
pvUnion->set(0,pvValue);
return;
}
if(scalarType==pvString) {
PVStringPtr pvValue = static_pointer_cast<PVString>(
pvDataCreate->createPVScalar(pvString));
stringstream ss;
ss << "value" << value;
pvValue->put(ss.str());
pvUnion->set(0,pvValue);
return;
}
throw std::runtime_error("only pvDouble and pvString are supported");
}
if(type==scalarArray) {
ScalarArrayConstPtr scalarArray = static_pointer_cast<const ScalarArray>(field);
ScalarType scalarType = scalarArray->getElementType();
if(scalarType==pvDouble) {
size_t num = 5;
PVDoubleArrayPtr pvValue = static_pointer_cast<PVDoubleArray>(
pvDataCreate->createPVScalarArray(pvDouble));
shared_vector<double> data(num);
for(size_t i=0; i<num; ++i) data[i] = value +i;
pvValue->replace(freeze(data));
pvUnion->set(0,pvValue);
return;
}
if(scalarType==pvString) {
size_t num = 5;
PVStringArrayPtr pvValue = static_pointer_cast<PVStringArray>(
pvDataCreate->createPVScalarArray(pvString));
shared_vector<string> data(num);
for(size_t i=0; i<num; ++i) {
stringstream ss;
ss << "value" << value << i;
data[i] = ss.str();
}
pvValue->replace(freeze(data));
pvUnion->set(0,pvValue);
return;
}
throw std::runtime_error("only pvDouble and pvString are supported");
}
throw std::runtime_error("only scalar and scalarArray fields are supported");
}
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;
}
static void testRequest()
{
StringArray nullNames;
FieldConstPtrArray nullFields;
StringArray optionNames(1);
FieldConstPtrArray optionFields(1);
optionNames[0] = "process";
optionFields[0] = fieldCreate->createScalar(pvString);
StringArray recordNames(1);
FieldConstPtrArray recordFields(1);
recordNames[0] = "_options";
recordFields[0] = fieldCreate->createStructure(optionNames,optionFields);
StringArray fieldNames(2);
FieldConstPtrArray fieldFields(2);
fieldNames[0] = "alarm";
fieldFields[0] = fieldCreate->createStructure(nullNames,nullFields);
fieldNames[1] = "timeStamp";
fieldFields[1] = fieldCreate->createStructure(nullNames,nullFields);
StringArray topNames(2);
FieldConstPtrArray topFields(2);
topNames[0] = "record";
topFields[0] = fieldCreate->createStructure(recordNames,recordFields);
topNames[1] = "field";
topFields[1] = fieldCreate->createStructure(fieldNames,fieldFields);
StructureConstPtr topStructure = fieldCreate->createStructure(
topNames,topFields);
cout << *topStructure << endl;
PVStructurePtr pvTop = pvDataCreate->createPVStructure(topStructure);
cout << *pvTop << endl;
cout << *pvTop->getStructure() << endl;
PVStructurePtr xxx = pvTop->getSubField<PVStructure>("record");
cout << *xxx << endl;
xxx = pvTop->getSubField<PVStructure>("field");
cout << *xxx << endl;
PVStringPtr pvString = pvTop->getSubField<PVString>("record._options.process");
pvString->put("true");
cout << *pvTop << endl;
string subName("record._options.process");
PVFieldPtr pvField = pvTop->getSubField<PVString>(subName);
string fieldName = pvField->getFieldName();
string fullName = pvField->getFullName();
cout << "fieldName " << fieldName << " fullName " << fullName << endl;
testOk1(fieldName.compare("process")==0);
testOk1(fullName.compare(subName)==0);
}
int main(int argc,char *argv[])
{
PvaClientPtr pva = PvaClient::create();
try {
PvaClientChannelPtr channel = pva->channel("helloPutGet");
PvaClientPutGetPtr putGet = channel->createPutGet();
putGet->connect();
PvaClientPutDataPtr putData = putGet->getPutData();
PVStructurePtr arg = putData->getPVStructure();
PVStringPtr pvValue = arg->getSubField<PVString>("argument.value");
pvValue->put("World");
putGet->putGet();
PvaClientGetDataPtr getData = putGet->getGetData();
cout << getData->getPVStructure() << endl;
} catch (std::runtime_error e) {
cout << "exception " << e.what() << endl;
return 1;
}
return 0;
}
void test()
{
RPCClientPtr channelRPC =
RPCClientPtr(RPCClient::create(channelName));
bool result = channelRPC->connect(1.0);
if(!result) {
cout<< "connect failed\n";
return;
}
NTNameValueBuilderPtr builder = NTNameValue::createBuilder();
NTNameValuePtr ntnamevalue = builder ->
value(pvString) ->
add("function",fieldCreate->createScalar(pvString)) ->
create();
PVStructurePtr pv = ntnamevalue->getPVStructure();
PVStringPtr pvFunction = pv->getSubField<PVString>("function");
PVStringArrayPtr pvNames = pv->getSubField<PVStringArray>("name");
PVStringArrayPtr pvValues = pv->getSubField<PVStringArray>("value");
size_t n = 2;
shared_vector<string> name(n);
shared_vector<string> value(n);
name[0] = string("configname");
name[1] = string("servicename");
value[0] = string("test");
value[1] = string("masar");
pvNames->replace(freeze(name));
pvValues->replace(freeze(value));
pvFunction->put("retrieveSnapshot");
try {
cout << *ntnamevalue->getPVStructure() << endl;
PVStructurePtr pvResponse = channelRPC->request(ntnamevalue->getPVStructure());
cout << *pvResponse << endl;
} catch (std::exception &e)
{
cout << e.what() << endl;
return;
}
channelRPC->destroy();
}
static void testPVScalarWithProperties(
string /*fieldName*/,ScalarType stype)
{
PVStructurePtr pvStructure;
bool hasValueAlarm = false;
bool hasBooleanAlarm = false;
bool hasDisplayControl = false;
switch(stype) {
case pvBoolean: {
pvStructure = standardPVField->scalar(
stype,alarmTimeStampValueAlarm);
hasBooleanAlarm = true;
PVBooleanPtr pvField = pvStructure->getSubField<PVBoolean>("value");
pvField->put(true);
break;
}
case pvByte: {
pvStructure = standardPVField->scalar(
stype,allProperties);
hasValueAlarm = true;
hasDisplayControl = true;
PVBytePtr pvField = pvStructure->getSubField<PVByte>("value");
pvField->put(127);
break;
}
case pvShort: {
pvStructure = standardPVField->scalar(
stype,allProperties);
hasValueAlarm = true;
hasDisplayControl = true;
PVShortPtr pvField = pvStructure->getSubField<PVShort>("value");
pvField->put(32767);
break;
}
case pvInt: {
pvStructure = standardPVField->scalar(
stype,allProperties);
hasValueAlarm = true;
hasDisplayControl = true;
PVIntPtr pvField = pvStructure->getSubField<PVInt>("value");
pvField->put((int32)0x80000000);
break;
}
case pvLong: {
pvStructure = standardPVField->scalar(
stype,allProperties);
hasValueAlarm = true;
hasDisplayControl = true;
PVLongPtr pvField = pvStructure->getSubField<PVLong>("value");
int64 value = 0x80000000;
value <<= 32;
value |= 0xffffffff;
pvField->put(value);
break;
}
case pvUByte: {
pvStructure = standardPVField->scalar(
stype,allProperties);
hasValueAlarm = true;
hasDisplayControl = true;
PVUBytePtr pvField = pvStructure->getSubField<PVUByte>("value");
pvField->put(255);
break;
}
case pvUShort: {
pvStructure = standardPVField->scalar(
stype,allProperties);
hasValueAlarm = true;
hasDisplayControl = true;
PVUShortPtr pvField = pvStructure->getSubField<PVUShort>("value");
pvField->put(65535);
break;
}
case pvUInt: {
pvStructure = standardPVField->scalar(
stype,allProperties);
hasValueAlarm = true;
hasDisplayControl = true;
PVUIntPtr pvField = pvStructure->getSubField<PVUInt>("value");
pvField->put((uint32)0x80000000);
break;
}
case pvULong: {
pvStructure = standardPVField->scalar(
stype,allProperties);
hasValueAlarm = true;
hasDisplayControl = true;
PVULongPtr pvField = pvStructure->getSubField<PVULong>("value");
int64 value = 0x80000000;
value <<= 32;
value |= 0xffffffff;
pvField->put(value);
break;
}
case pvFloat: {
pvStructure = standardPVField->scalar(
stype,allProperties);
hasValueAlarm = true;
hasDisplayControl = true;
PVFloatPtr pvField = pvStructure->getSubField<PVFloat>("value");
pvField->put(1.123e8);
break;
}
case pvDouble: {
pvStructure = standardPVField->scalar(
stype,allProperties);
hasValueAlarm = true;
hasDisplayControl = true;
PVDoublePtr pvField = pvStructure->getSubField<PVDouble>("value");
pvField->put(1.123e35);
break;
}
case pvString: {
pvStructure = standardPVField->scalar(
stype,alarmTimeStamp);
PVStringPtr pvField = pvStructure->getSubField<PVString>("value");
pvField->put(string("this is a string"));
break;
}
}
PVLongPtr seconds = pvStructure->getSubField<PVLong>(
string("timeStamp.secondsPastEpoch"));
testOk1(seconds.get()!=0);
seconds->put(123456789);
PVIntPtr nano = pvStructure->getSubField<PVInt>(string("timeStamp.nanoseconds"));
testOk1(nano.get()!=0);
nano->put(1000000);
PVIntPtr severity = pvStructure->getSubField<PVInt>(string("alarm.severity"));
testOk1(severity.get()!=0);
severity->put(2);
PVStringPtr message = pvStructure->getSubField<PVString>(string("alarm.message"));
testOk1(message.get()!=0);
message->put(string("messageForAlarm"));
if(hasDisplayControl) {
PVStringPtr desc = pvStructure->getSubField<PVString>(
string("display.description"));
testOk1(desc.get()!=0);
desc->put(string("this is a description"));
PVStringPtr format = pvStructure->getSubField<PVString>(
string("display.format"));
testOk1(format.get()!=0);
format->put(string("f10.2"));
PVStringPtr units = pvStructure->getSubField<PVString>(
string("display.units"));
testOk1(units.get()!=0);
units->put(string("SomeUnits"));
PVDoublePtr limit = pvStructure->getSubField<PVDouble>(
string("display.limitLow"));
testOk1(limit.get()!=0);
limit->put(0.0);
limit = pvStructure->getSubField<PVDouble>(
string("display.limitHigh"));
testOk1(limit.get()!=0);
limit->put(10.0);
limit = pvStructure->getSubField<PVDouble>(
string("control.limitLow"));
testOk1(limit.get()!=0);
limit->put(1.0);
limit = pvStructure->getSubField<PVDouble>(
string("control.limitHigh"));
testOk1(limit.get()!=0);
limit->put(9.0);
}
if(hasValueAlarm) {
PVBooleanPtr pvBoolean = pvStructure->getSubField<PVBoolean>("valueAlarm.active");
pvBoolean->put(true);
PVScalarPtr pvtemp = pvStructure->getSubField<PVScalar>("valueAlarm.lowAlarmLimit");
testOk1(pvtemp.get()!=0);
convert->fromDouble(pvtemp,1.0);
pvtemp = pvStructure->getSubField<PVScalar>("valueAlarm.highAlarmLimit");
testOk1(pvtemp.get()!=0);
convert->fromDouble(pvtemp,9.0);
severity = pvStructure->getSubField<PVInt>(
string("valueAlarm.lowAlarmSeverity"));
testOk1(severity.get()!=0);
severity->put(2);
severity = pvStructure->getSubField<PVInt>(
string("valueAlarm.highAlarmSeverity"));
testOk1(severity.get()!=0);
severity->put(2);
PVBooleanPtr active = pvStructure->getSubField<PVBoolean>(
string("valueAlarm.active"));
testOk1(active.get()!=0);
active->put(true);
}
if(hasBooleanAlarm) {
PVBooleanPtr pvBoolean = pvStructure->getSubField<PVBoolean>("valueAlarm.active");
pvBoolean->put(true);
severity = pvStructure->getSubField<PVInt>(
string("valueAlarm.falseSeverity"));
testOk1(severity.get()!=0);
severity->put(0);
severity = pvStructure->getSubField<PVInt>(
string("valueAlarm.trueSeverity"));
testOk1(severity.get()!=0);
severity->put(2);
severity = pvStructure->getSubField<PVInt>(
string("valueAlarm.changeStateSeverity"));
testOk1(severity.get()!=0);
severity->put(1);
}
}