Examples with SessionDiagnosticsDataType org.eclipse.milo.opcua.stack.core.types.structured.SessionDiagnosticsDataType used on opensource projects

Example 1 with SessionDiagnosticsDataType

use of org.eclipse.milo.opcua.stack.core.types.structured.SessionDiagnosticsDataType in project milo by eclipse.

the class SessionDiagnosticsVariableArray method onStartup.

@Override
protected void onStartup() {
    ServerDiagnosticsTypeNode diagnosticsNode = (ServerDiagnosticsTypeNode) server.getAddressSpaceManager().getManagedNode(Identifiers.Server_ServerDiagnostics).orElseThrow(() -> new NoSuchElementException("NodeId: " + Identifiers.Server_ServerDiagnostics));
    diagnosticsEnabled.set(diagnosticsNode.getEnabledFlag());
    if (diagnosticsEnabled.get()) {
        addSessionListener();
    }
    attributeObserver = (node, attributeId, value) -> {
        if (attributeId == AttributeId.Value) {
            DataValue dataValue = (DataValue) value;
            Object o = dataValue.getValue().getValue();
            if (o instanceof Boolean) {
                boolean current = (boolean) o;
                boolean previous = diagnosticsEnabled.getAndSet(current);
                if (!previous && current) {
                    server.getSessionManager().getAllSessions().forEach(this::createSessionDiagnosticsVariable);
                    if (sessionListener == null) {
                        addSessionListener();
                    }
                } else if (previous && !current) {
                    if (sessionListener != null) {
                        server.getSessionManager().removeSessionListener(sessionListener);
                        sessionListener = null;
                    }
                    sessionDiagnosticsVariables.forEach(Lifecycle::shutdown);
                    sessionDiagnosticsVariables.clear();
                }
            }
        }
    };
    diagnosticsNode.getEnabledFlagNode().addAttributeObserver(attributeObserver);
    node.getFilterChain().addLast(diagnosticValueFilter(diagnosticsEnabled, ctx -> {
        ExtensionObject[] xos = ExtensionObject.encodeArray(server.getSerializationContext(), server.getSessionManager().getAllSessions().stream().map(s -> s.getSessionDiagnostics().getSessionDiagnosticsDataType()).toArray(SessionDiagnosticsDataType[]::new));
        return new DataValue(new Variant(xos));
    }));
}