public void init(FilterConfig filterConfig) throws ServletException {
final ServletContext servletContext = filterConfig.getServletContext();
// Store servlet context in a weakreference, for injection
UpdatedGuiceFilter.servletContext = new WeakReference<ServletContext>(servletContext);
// In the default pipeline, this is a noop. However, if replaced
// by a managed pipeline, a lazy init will be triggered the first time
// dispatch occurs.
FilterPipeline filterPipeline = getFilterPipeline();
filterPipeline.initPipeline(servletContext);
}
public void destroy() {
try {
// Destroy all registered filters & servlets in that order
FilterPipeline filterPipeline = getFilterPipeline();
filterPipeline.destroyPipeline();
} finally {
reset();
servletContext.clear();
}
}
public void doFilter(
ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain)
throws IOException, ServletException {
FilterPipeline filterPipeline = getFilterPipeline();
Context previous = UpdatedGuiceFilter.localContext.get();
HttpServletRequest request = (HttpServletRequest) servletRequest;
HttpServletResponse response = (HttpServletResponse) servletResponse;
HttpServletRequest originalRequest =
(previous != null) ? previous.getOriginalRequest() : request;
localContext.set(new Context(originalRequest, request, response));
try {
// dispatch across the servlet pipeline, ensuring web.xml's
// filterchain is honored
filterPipeline.dispatch(servletRequest, servletResponse, filterChain);
} finally {
localContext.set(previous);
}
}