@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String sitemapName = request.getParameter("sitemap");
String widgetId = request.getParameter("widgetId");
if (sitemapName == null) {
throw new ServletException("Parameter 'sitemap' must be provided!");
}
if (widgetId == null) {
throw new ServletException("Parameter 'widget' must be provided!");
}
String uriString = null;
Sitemap sitemap = (Sitemap) modelRepository.getModel(sitemapName);
if (sitemap != null) {
Widget widget = itemUIRegistry.getWidget(sitemap, widgetId);
if (widget instanceof Image) {
Image image = (Image) widget;
uriString = image.getUrl();
} else if (widget instanceof Video) {
Video video = (Video) widget;
uriString = video.getUrl();
} else {
if (widget == null) {
throw new ServletException("Widget '" + widgetId + "' could not be found!");
} else {
throw new ServletException(
"Widget type '" + widget.getClass().getName() + "' is not supported!");
}
}
} else {
throw new ServletException("Sitemap '" + sitemapName + "' could not be found!");
}
HttpClient httpClient = new HttpClient();
try {
// check if the uri uses credentials and configure the http client accordingly
URI uri = URI.create(uriString);
if (uri.getUserInfo() != null) {
String[] userInfo = uri.getUserInfo().split(":");
httpClient.getParams().setAuthenticationPreemptive(true);
Credentials creds = new UsernamePasswordCredentials(userInfo[0], userInfo[1]);
httpClient
.getState()
.setCredentials(
new AuthScope(uri.getHost(), uri.getPort(), AuthScope.ANY_REALM), creds);
}
} catch (IllegalArgumentException e) {
throw new ServletException("URI '" + uriString + "' is not valid: " + e.getMessage());
}
// do the client request
GetMethod method = new GetMethod(uriString);
httpClient.executeMethod(method);
// copy all headers
for (Header header : method.getResponseHeaders()) {
response.setHeader(header.getName(), header.getValue());
}
// now copy/stream the body content
IOUtils.copy(method.getResponseBodyAsStream(), response.getOutputStream());
method.releaseConnection();
}
private WidgetDTO createWidgetBean(
String sitemapName,
Widget widget,
boolean drillDown,
URI uri,
String widgetId,
Locale locale) {
// Test visibility
if (itemUIRegistry.getVisiblity(widget) == false) {
return null;
}
WidgetDTO bean = new WidgetDTO();
if (widget.getItem() != null) {
try {
Item item = itemUIRegistry.getItem(widget.getItem());
if (item != null) {
bean.item =
EnrichedItemDTOMapper.map(item, false, UriBuilder.fromUri(uri).build(), locale);
}
} catch (ItemNotFoundException e) {
logger.debug(e.getMessage());
}
}
bean.widgetId = widgetId;
bean.icon = itemUIRegistry.getCategory(widget);
bean.labelcolor = itemUIRegistry.getLabelColor(widget);
bean.valuecolor = itemUIRegistry.getValueColor(widget);
bean.label = itemUIRegistry.getLabel(widget);
bean.type = widget.eClass().getName();
if (widget instanceof LinkableWidget) {
LinkableWidget linkableWidget = (LinkableWidget) widget;
EList<Widget> children = itemUIRegistry.getChildren(linkableWidget);
if (widget instanceof Frame) {
int cntWidget = 0;
for (Widget child : children) {
widgetId += "_" + cntWidget;
WidgetDTO subWidget =
createWidgetBean(sitemapName, child, drillDown, uri, widgetId, locale);
if (subWidget != null) {
bean.widgets.add(subWidget);
cntWidget++;
}
}
} else if (children.size() > 0) {
String pageName = itemUIRegistry.getWidgetId(linkableWidget);
bean.linkedPage =
createPageBean(
sitemapName,
itemUIRegistry.getLabel(widget),
itemUIRegistry.getCategory(widget),
pageName,
drillDown ? children : null,
drillDown,
isLeaf(children),
uri,
locale);
}
}
if (widget instanceof Switch) {
Switch switchWidget = (Switch) widget;
for (Mapping mapping : switchWidget.getMappings()) {
MappingDTO mappingBean = new MappingDTO();
mappingBean.command = mapping.getCmd();
mappingBean.label = mapping.getLabel();
bean.mappings.add(mappingBean);
}
}
if (widget instanceof Selection) {
Selection selectionWidget = (Selection) widget;
for (Mapping mapping : selectionWidget.getMappings()) {
MappingDTO mappingBean = new MappingDTO();
mappingBean.command = mapping.getCmd();
mappingBean.label = mapping.getLabel();
bean.mappings.add(mappingBean);
}
}
if (widget instanceof Slider) {
Slider sliderWidget = (Slider) widget;
bean.sendFrequency = sliderWidget.getFrequency();
bean.switchSupport = sliderWidget.isSwitchEnabled();
}
if (widget instanceof List) {
List listWidget = (List) widget;
bean.separator = listWidget.getSeparator();
}
if (widget instanceof Image) {
Image imageWidget = (Image) widget;
String wId = itemUIRegistry.getWidgetId(widget);
if (uri.getPort() < 0 || uri.getPort() == 80) {
bean.url =
uri.getScheme()
+ "://"
+ uri.getHost()
+ "/proxy?sitemap="
+ sitemapName
+ ".sitemap&widgetId="
+ wId;
} else {
bean.url =
uri.getScheme()
+ "://"
+ uri.getHost()
+ ":"
+ uri.getPort()
+ "/proxy?sitemap="
+ sitemapName
+ ".sitemap&widgetId="
+ wId;
}
if (imageWidget.getRefresh() > 0) {
bean.refresh = imageWidget.getRefresh();
}
}
if (widget instanceof Video) {
Video videoWidget = (Video) widget;
String wId = itemUIRegistry.getWidgetId(widget);
if (videoWidget.getEncoding() != null) {
bean.encoding = videoWidget.getEncoding();
}
if (uri.getPort() < 0 || uri.getPort() == 80) {
bean.url =
uri.getScheme()
+ "://"
+ uri.getHost()
+ "/proxy?sitemap="
+ sitemapName
+ ".sitemap&widgetId="
+ wId;
} else {
bean.url =
uri.getScheme()
+ "://"
+ uri.getHost()
+ ":"
+ uri.getPort()
+ "/proxy?sitemap="
+ sitemapName
+ ".sitemap&widgetId="
+ wId;
}
}
if (widget instanceof Webview) {
Webview webViewWidget = (Webview) widget;
bean.url = webViewWidget.getUrl();
bean.height = webViewWidget.getHeight();
}
if (widget instanceof Mapview) {
Mapview mapViewWidget = (Mapview) widget;
bean.height = mapViewWidget.getHeight();
}
if (widget instanceof Chart) {
Chart chartWidget = (Chart) widget;
bean.service = chartWidget.getService();
bean.period = chartWidget.getPeriod();
if (chartWidget.getRefresh() > 0) {
bean.refresh = chartWidget.getRefresh();
}
}
if (widget instanceof Setpoint) {
Setpoint setpointWidget = (Setpoint) widget;
bean.minValue = setpointWidget.getMinValue();
bean.maxValue = setpointWidget.getMaxValue();
bean.step = setpointWidget.getStep();
}
return bean;
}