/**
* Creates a proxy request by fetching pipelined data and adding it to an existing request.
*
*/
private sRequest createPipelinedProxyRequest(Gadget gadget, sRequest original)
{
sRequest request = new sRequest(original);
request.setIgnoreCache(true);
GadgetSpec spec = gadget.getSpec();
GadgetContext context = gadget.getContext();
IPreloads proxyPreloads = preloader.preload(context, spec,
PreloaderService.PreloadPhase.PROXY_FETCH);
// TODO: Add current url to GadgetContext to support transitive proxying.
// POST any preloaded content
if ((proxyPreloads != null) && proxyPreloads.getData().Count != 0)
{
JsonArray array = new JsonArray();
foreach (PreloadedData preload in proxyPreloads.getData())
{
Dictionary <String, Object> dataMap = preload.toJson();
foreach (var entry in dataMap)
{
// TODO: the existing, supported content is JSONObjects that contain the
// key already. Discarding the key is odd.
array.Put(entry.Value);
}
}
String postContent = array.ToString();
// POST the preloaded content, with a method override of GET
// to enable caching
request.setMethod("POST")
.setPostBody(Encoding.UTF8.GetBytes(postContent))
.setHeader("Content-Type", "text/json;charset=utf-8");
}
return(request);
}
/**
* Injects preloads into the gadget output.
*
* If preloading fails for any reason, we just output an empty object.
*/
private static void InjectPreloads(Gadget gadget, Node scriptTag)
{
IPreloads preloads = gadget.getPreloads();
Dictionary <String, Object> preload = new Dictionary <string, object>();
foreach (PreloadedData preloaded in preloads.getData())
{
foreach (var entry in preloaded.toJson())
{
preload.Add(entry.Key, entry.Value);
}
}
Text text = scriptTag.getOwnerDocument().createTextNode("gadgets.io.preloaded_=");
text.appendData(JsonConvert.ExportToString(preload));
text.appendData(";");
scriptTag.appendChild(text);
}