@Override
public void handle(ServiceRequest<GetEndpointsRequest, GetEndpointsResponse> service)
throws UaException {
GetEndpointsRequest request = service.getRequest();
String endpointUrl = request.getEndpointUrl();
if (endpointUrl == null) endpointUrl = "";
UaTcpStackServer server = servers.get(endpointUrl);
EndpointDescription[] endpoints =
(server != null) ? server.getEndpointDescriptions() : new EndpointDescription[0];
List<String> profileUris =
request.getProfileUris() != null
? Lists.newArrayList(request.getProfileUris())
: Lists.newArrayList();
EndpointDescription[] filtered =
Arrays.stream(endpoints)
.filter(ed -> filterProfileUris(ed, profileUris))
.filter(this::filterEndpointUrls)
.toArray(EndpointDescription[]::new);
service.setResponse(new GetEndpointsResponse(service.createResponseHeader(), filtered));
}
@Override
public void handle(ServiceRequest<FindServersRequest, FindServersResponse> service)
throws UaException {
FindServersRequest request = service.getRequest();
List<ApplicationDescription> servers = Lists.newArrayList();
List<String> serverUris = Lists.newArrayList(request.getServerUris());
for (UaTcpStackServer server : registered) {
ApplicationDescription description = server.getApplicationDescription();
if (serverUris.isEmpty()) {
servers.add(description);
} else {
if (serverUris.contains(description.getApplicationUri())) {
servers.add(description);
}
}
}
ResponseHeader header = service.createResponseHeader();
FindServersResponse response =
new FindServersResponse(
header, servers.toArray(new ApplicationDescription[servers.size()]));
service.setResponse(response);
}
public FallbackServer() {
UaTcpStackServerConfig config =
UaTcpStackServerConfig.builder()
.setApplicationName(LocalizedText.english("Stack Discovery Server"))
.setApplicationUri("urn:digitalpetri:stack:discovery")
.setProductUri("http://www.digitalpetri.com/opc-ua")
.build();
server = new UaTcpStackServer(config);
server.addRequestHandler(FindServersRequest.class, new FindServersHandler());
server.addRequestHandler(GetEndpointsRequest.class, new GetEndpointsHandler());
}
public void unregisterServer(UaTcpStackServer server) {
if (registered.remove(server)) {
server.getDiscoveryUrls().forEach(servers::remove);
}
}
public void registerServer(UaTcpStackServer server) {
if (registered.add(server)) {
server.getDiscoveryUrls().forEach(url -> servers.put(url, server));
}
}