rpcService

testApp/remote/rpcServiceExample.cpp

@@ -0,0 +1,55 @@
+/**
+ * Copyright - See the COPYRIGHT that is included with this distribution.
+ * pvAccessCPP is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution.
+ */
+
+#include <pv/convert.h>
+#include <pv/rpcServer.h>
+
+using namespace epics::pvData;
+using namespace epics::pvAccess;
+
+
+
+static StructureConstPtr createResultField()
+{
+    FieldCreatePtr fieldCreate = getFieldCreate();
+    
+    StringArray fieldNames;
+    fieldNames.push_back("c");
+    FieldConstPtrArray fields;
+    fields.push_back(fieldCreate->createScalar(pvDouble));
+    return fieldCreate->createStructure(fieldNames, fields);
+}
+
+static StructureConstPtr resultStructure = createResultField();
+
+class SumServiceImpl :
+    public RPCService
+{
+    PVStructure::shared_pointer request(PVStructure::shared_pointer const & args)
+        throw (RPCRequestException)
+    {
+        // TODO error handling
+        double a = atof(args->getStringField("a")->get().c_str());
+        double b = atof(args->getStringField("b")->get().c_str());
+
+        PVStructure::shared_pointer result = getPVDataCreate()->createPVStructure(resultStructure);
+        result->getDoubleField("c")->put(a+b);
+        return result;
+    }
+};
+
+int main()
+{
+    RPCServer server;
+
+    server.registerService("sum", RPCService::shared_pointer(new SumServiceImpl()));
+    // you can register as many services as you want here ...
+
+    server.printInfo();
+    server.run();
+
+    return 0;
+}