3a190cb572
Changes to provider factory registery make this very inefficient (build a new client context of each request)
55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
/**
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* Copyright - See the COPYRIGHT that is included with this distribution.
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* pvAccessCPP is distributed subject to a Software License Agreement found
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* in file LICENSE that is included with this distribution.
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*/
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#include <pv/pvData.h>
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#include <pv/rpcClient.h>
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using namespace epics::pvData;
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using namespace epics::pvAccess;
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static StructureConstPtr requestStructure =
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getFieldCreate()->createFieldBuilder()->
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add("a", pvString)->
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add("b", pvString)->
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createStructure();
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#define TIMEOUT 3.0
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int main()
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{
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PVStructure::shared_pointer request = getPVDataCreate()->createPVStructure(requestStructure);
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request->getSubField<PVString>("a")->put("3.14");
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request->getSubField<PVString>("b")->put("2.71");
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std::cout<<"simple sync way, allows multiple RPC calls on the client instance\n";
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try
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{
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RPCClient::shared_pointer client = RPCClient::create("sum");
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PVStructure::shared_pointer result = client->request(request, TIMEOUT);
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std::cout << *result << std::endl;
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} catch (std::exception &e)
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{
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std::cout << "Error: " << e.what() << std::endl;
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return 1;
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}
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std::cout<<"async way, allows multiple RPC calls on the client instance\n";
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try
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{
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RPCClient::shared_pointer client = RPCClient::create("sum");
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client->issueRequest(request);
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// go get some coffee
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PVStructure::shared_pointer result = client->waitResponse(TIMEOUT);
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std::cout << *result << std::endl;
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} catch (std::exception &e)
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{
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std::cout << "Error:" << e.what() << std::endl;
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return 1;
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}
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return 0;
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}
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