org.codice.ddf.security.handler.cas.filter

Class ProxyFilter

java.lang.Object

org.codice.ddf.security.handler.cas.filter.ProxyFilter

All Implemented Interfaces:

javax.servlet.Filter

public class ProxyFilter
extends Object
implements javax.servlet.Filter

Proxy filter used by the DDF CAS client. When a request comes in, the filter chain will initially look like the following:

ProxyFilter -> MyServlet

We want to intercept the filter chain and add all of the required CAS filters in the correct order so the filter chain looks similar to the following:

ProxyFilter -> CAS filter 1 -> CAS filter 2 -> CAS filter n -> MyServlet

Note: Using blueprint to define the filters and publish them as services caused the filters to be added to the filter chain in an nondeterministic order. Setting service raking didn't work either. CAS relies on the filters being executed in a specific order.

See Also:

Filter

Constructor Summary

Constructors

Constructor and Description
ProxyFilter(List<javax.servlet.Filter> filters)

Method Summary

Modifier and Type	Method and Description
void	destroy()
void	doFilter(javax.servlet.ServletRequest servletRequest, javax.servlet.ServletResponse servletResponse, javax.servlet.FilterChain filterChain) Adds all of the CAS filters to the filter chain and calls the filter chain so it can start executing all of the CAS filters.
void	init(javax.servlet.FilterConfig filterConfig)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ProxyFilter

public ProxyFilter(List<javax.servlet.Filter> filters)

Parameters:

filters - The CAS filters to add to the filter chain.

Method Detail

destroy

public void destroy()

Specified by:

destroy in interface javax.servlet.Filter

See Also:

Filter.destroy()

doFilter

public void doFilter(javax.servlet.ServletRequest servletRequest,
                     javax.servlet.ServletResponse servletResponse,
                     javax.servlet.FilterChain filterChain)
              throws IOException,
                     javax.servlet.ServletException

Adds all of the CAS filters to the filter chain and calls the filter chain so it can start executing all of the CAS filters.

Specified by:

doFilter in interface javax.servlet.Filter

Throws:

IOException

javax.servlet.ServletException

See Also:

Filter.doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse, javax.servlet.FilterChain)

init

public void init(javax.servlet.FilterConfig filterConfig)
          throws javax.servlet.ServletException

Specified by:

init in interface javax.servlet.Filter

Throws:

javax.servlet.ServletException

See Also:

Filter.init(javax.servlet.FilterConfig)