protected static Uri ValidateUrl(String urlToValidate)
{
if (urlToValidate == null)
{
throw new Exception("url parameter is missing.");
}
try
{
UriBuilder url = UriBuilder.parse(urlToValidate);
if (!"http".Equals(url.getScheme()) && !"https".Equals(url.getScheme()))
{
throw new GadgetException(GadgetException.Code.INVALID_PARAMETER,
"Invalid request url scheme in url: " + HttpUtility.UrlEncode(urlToValidate) +
"; only \"http\" and \"https\" supported.");
}
if (string.IsNullOrEmpty(url.getPath()))
{
url.setPath("/");
}
return(url.toUri());
}
catch
{
throw new Exception("url parameter is not a valid url.");
}
}
/**
* Render the gadget into a string by performing the following steps:
*
* - Retrieve gadget specification information (GadgetSpec, MessageBundle, etc.)
*
* - Fetch any preloaded data needed to handle the request, as handled by Preloader.
*
* - Perform rewriting operations on the output content, handled by Rewriter.
*
* @param gadget The gadget for the rendering operation.
* @return The rendered gadget content
* @throws RenderingException if any issues arise that prevent rendering.
*/
public String render(Gadget gadget)
{
try
{
View view = gadget.getCurrentView();
GadgetContext context = gadget.getContext();
GadgetSpec spec = gadget.getSpec();
IPreloads preloads = preloader.preload(context, spec,
PreloaderService.PreloadPhase.HTML_RENDER);
gadget.setPreloads(preloads);
String content;
if (view.getHref() == null)
{
content = view.getContent();
}
else
{
// TODO: Add current url to GadgetContext to support transitive proxying.
UriBuilder uri = new UriBuilder(view.getHref());
uri.addQueryParameter("lang", context.getLocale().getLanguage());
uri.addQueryParameter("country", context.getLocale().getCountry());
sRequest request = new sRequest(uri.toUri())
.setIgnoreCache(context.getIgnoreCache())
.setOAuthArguments(new OAuthArguments(view))
.setAuthType(view.getAuthType())
.setSecurityToken(context.getToken())
.setContainer(context.getContainer())
.setGadget(spec.getUrl());
sResponse response = DefaultHttpCache.Instance.getResponse(request);
if (response == null || response.isStale())
{
sRequest proxyRequest = createPipelinedProxyRequest(gadget, request);
response = requestPipeline.execute(proxyRequest);
DefaultHttpCache.Instance.addResponse(request, response);
}
if (response.isError())
{
throw new RenderingException("Unable to reach remote host. HTTP status " +
response.getHttpStatusCode());
}
content = response.responseString;
}
return rewriter.rewriteGadget(gadget, content);
}
catch (GadgetException e)
{
throw new RenderingException(e.Message, e);
}
}
/**
* Render the gadget into a string by performing the following steps:
*
* - Retrieve gadget specification information (GadgetSpec, MessageBundle, etc.)
*
* - Fetch any preloaded data needed to handle the request, as handled by Preloader.
*
* - Perform rewriting operations on the output content, handled by Rewriter.
*
* @param gadget The gadget for the rendering operation.
* @return The rendered gadget content
* @throws RenderingException if any issues arise that prevent rendering.
*/
public String render(Gadget gadget)
{
try
{
View view = gadget.getCurrentView();
GadgetContext context = gadget.getContext();
GadgetSpec spec = gadget.getSpec();
IPreloads preloads = preloader.preload(context, spec,
PreloaderService.PreloadPhase.HTML_RENDER);
gadget.setPreloads(preloads);
String content;
if (view.getHref() == null)
{
content = view.getContent();
}
else
{
// TODO: Add current url to GadgetContext to support transitive proxying.
UriBuilder uri = new UriBuilder(view.getHref());
uri.addQueryParameter("lang", context.getLocale().getLanguage());
uri.addQueryParameter("country", context.getLocale().getCountry());
sRequest request = new sRequest(uri.toUri())
.setIgnoreCache(context.getIgnoreCache())
.setOAuthArguments(new OAuthArguments(view))
.setAuthType(view.getAuthType())
.setSecurityToken(context.getToken())
.setContainer(context.getContainer())
.setGadget(spec.getUrl());
sResponse response = DefaultHttpCache.Instance.getResponse(request);
if (response == null || response.isStale())
{
sRequest proxyRequest = createPipelinedProxyRequest(gadget, request);
response = requestPipeline.execute(proxyRequest);
DefaultHttpCache.Instance.addResponse(request, response);
}
if (response.isError())
{
throw new RenderingException("Unable to reach remote host. HTTP status " +
response.getHttpStatusCode());
}
content = response.responseString;
}
return(rewriter.rewriteGadget(gadget, content));
}
catch (GadgetException e)
{
throw new RenderingException(e.Message, e);
}
}