/**
* @param request HTTP request
* @param response HTTP response
* @return rendered HTML output
*/
public String renderPage(HttpRequest request, HttpResponse response) {
RequestLookup requestLookup = createRequestLookup(request, response);
API api = new API(sessionRegistry, requestLookup);
// If exists, render Theme.
Theme renderingTheme = getRenderingTheme(api);
if (renderingTheme != null) {
renderingTheme.render(requestLookup);
}
try {
return renderPage(request.getUriWithoutContextPath(), null, requestLookup, api);
} catch (SessionNotFoundException e) {
String loginPageUri = configuration.getLoginPageUri();
if (loginPageUri == null) {
throw (HttpErrorException) e;
} else {
throw new PageRedirectException(loginPageUri);
}
}
}
private Path resolveResourceInTheme(App app, String uriWithoutContextPath) {
/* Correct 'uriWithoutContextPath' value must be in
* "/public/themes/{theme-name}/{sub-directory}/{rest-of-the-path}" format.
* So there should be at least 5 slashes. Don't worry about multiple consecutive slashes. They are covered
* in HttpRequest.isValid() method which is called before this method.
*/
int slashesCount = 0, thirdSlashIndex = -1, fourthSlashIndex = -1;
for (int i = 0; i < uriWithoutContextPath.length(); i++) {
if (uriWithoutContextPath.charAt(i) == '/') {
slashesCount++;
if (slashesCount == 3) {
thirdSlashIndex = i;
} else if (slashesCount == 4) {
fourthSlashIndex = i;
} else if (slashesCount == 5) {
break;
}
}
}
if (slashesCount != 5) {
throw new IllegalArgumentException(
"Invalid static resource URI '" + uriWithoutContextPath + "'.");
}
String themeName = uriWithoutContextPath.substring(thirdSlashIndex + 1, fourthSlashIndex);
Theme theme = app.getThemes().get(themeName);
if (theme == null) {
throw new ResourceNotFoundException(
"Theme '"
+ themeName
+ "' found in URI '"
+ uriWithoutContextPath
+ "' does not exists in app '"
+ app.getName()
+ "'.");
}
// {sub-directory}/{rest-of-the-path}
String relativePathString =
uriWithoutContextPath.substring(fourthSlashIndex + 1, uriWithoutContextPath.length());
return Paths.get(theme.getPath(), DIR_NAME_PUBLIC_RESOURCES, relativePathString);
}
public Optional<String> renderErrorPage(
HttpErrorException ex, HttpRequest request, HttpResponse response) {
Map<String, String> errorPages = configuration.getErrorPages();
String errorPageUri =
errorPages.getOrDefault(String.valueOf(ex.getHttpStatusCode()), errorPages.get("default"));
if (errorPageUri == null) {
return Optional.<String>empty();
}
RequestLookup requestLookup = createRequestLookup(request, response);
API api = new API(sessionRegistry, requestLookup);
// If exists, render Theme.
Theme renderingTheme = getRenderingTheme(api);
if (renderingTheme != null) {
renderingTheme.render(requestLookup);
}
// Create Model with HTTP status code and error message.
Map<String, Object> modelMap = new HashMap<>(2);
modelMap.put("status", ex.getHttpStatusCode());
modelMap.put("message", ex.getMessage());
return Optional.of(renderPage(errorPageUri, new MapModel(modelMap), requestLookup, api));
}