method.hpp

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#pragma once
 
#include <utility>  // forward
 
#include "open62541pp/async.hpp"
#include "open62541pp/config.hpp"
#include "open62541pp/services/detail/async_transform.hpp"
#include "open62541pp/services/detail/client_service.hpp"
#include "open62541pp/services/detail/request_handling.hpp"
#include "open62541pp/services/detail/response_handling.hpp"
#include "open62541pp/span.hpp"
#include "open62541pp/types.hpp"
#include "open62541pp/ua/types.hpp"
 
#ifdef UA_ENABLE_METHODCALLS
 
namespace opcua {
class Client;
}  // namespace opcua
 
namespace opcua::services {
 
/**
 * @defgroup Method Method service set
 * Call (invoke) methods.
 * @see https://reference.opcfoundation.org/Core/Part4/v105/docs/5.12
 * @ingroup Services
 * @{
 *
 * @defgroup Call Call service
 * This Service is used to call (invoke) a list of methods.
 * @see https://reference.opcfoundation.org/Core/Part4/v105/docs/5.12.2
 * @{
 */
 
/**
 * Call server methods.
 * @param connection Instance of type Client
 * @param request Call request
 */
CallResponse call(Client& connection, const CallRequest& request) noexcept;
 
/**
 * @copydoc call
 * @param token @completiontoken{void(CallResponse&)}
 * @return @asyncresult{CallResponse}
 */
template <typename CompletionToken>
auto callAsync(Client& connection, const CallRequest& request, CompletionToken&& token) {
    return detail::sendRequestAsync<CallRequest, CallResponse>(
        connection, request, std::forward<CompletionToken>(token)
    );
}
 
/**
 * Call a server method.
 * The `objectId` must have a `HasComponent` reference to the method specified in `methodId`.
 *
 * @param connection Instance of type Server or Client
 * @param objectId NodeId of the object on which the method is invoked
 * @param methodId NodeId of the method to invoke
 * @param inputArguments Input argument values
 */
template <typename T>
CallMethodResult call(
    T& connection,
    const NodeId& objectId,
    const NodeId& methodId,
    Span<const Variant> inputArguments
) noexcept;
 
/**
 * @copydoc call(T&, const NodeId&, const NodeId&, Span<const Variant>)
 * @param token @completiontoken{void(CallMethodResult&)}
 * @return @asyncresult{CallMethodResult}
 */
template <typename CompletionToken>
auto callAsync(
    Client& connection,
    const NodeId& objectId,
    const NodeId& methodId,
    Span<const Variant> inputArguments,
    CompletionToken&& token
) {
    auto item = detail::makeCallMethodRequest(objectId, methodId, inputArguments);
    const auto request = detail::makeCallRequest(item);
    return callAsync(
        connection,
        asWrapper<CallRequest>(request),
        detail::TransformToken{
            detail::wrapSingleResultWithStatus<CallMethodResult, UA_CallResponse>,
            std::forward<CompletionToken>(token)
        }
    );
}
 
/**
 * @}
 * @}
 */
 
}  // namespace opcua::services
 
#endif