@Override
public void doFilter(
final ServletRequest request, final ServletResponse response, final FilterChain chain)
throws IOException, ServletException {
HttpServletRequest httpRequest = ((HttpServletRequest) request);
StringBuffer sourceUrl = httpRequest.getRequestURL();
String queryString = httpRequest.getQueryString();
if (queryString != null) {
sourceUrl.append("?");
sourceUrl.append(queryString);
}
try {
request.setAttribute(
AbstractGatewayFilter.SOURCE_REQUEST_URL_ATTRIBUTE_NAME,
Parser.parse(sourceUrl.toString()));
} catch (URISyntaxException e) {
throw new ServletException(e);
}
try {
Subject.doAs(
subject,
new PrivilegedExceptionAction<Void>() {
@Override
public Void run() throws Exception {
chain.doFilter(request, response);
return null;
}
});
} catch (PrivilegedActionException e) {
throw new ServletException(e);
}
}
private String rewriteValue(UrlRewriter rewriter, String value, String rule) {
try {
Template input = Parser.parse(value);
Template output = rewriter.rewrite(this, input, UrlRewriter.Direction.IN, rule);
value = output.toString();
} catch (URISyntaxException e) {
LOG.failedToParseValueForUrlRewrite(value);
}
return value;
}
private Template getSourceUrl() {
Template urlTemplate = null;
StringBuffer urlString = super.getRequestURL();
String queryString = super.getQueryString();
if (queryString != null) {
urlString.append('?');
urlString.append(queryString);
}
try {
urlTemplate = Parser.parse(urlString.toString());
} catch (URISyntaxException e) {
LOG.failedToParseValueForUrlRewrite(urlString.toString());
// Shouldn't be possible given that the URL is constructed from parts of an existing URL.
urlTemplate = null;
}
return urlTemplate;
}