119 lines
3.7 KiB
Java
119 lines
3.7 KiB
Java
/**
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*
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*/
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package org.gcube.datatransfer.resolver;
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import java.io.IOException;
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import javax.servlet.Filter;
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import javax.servlet.FilterChain;
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import javax.servlet.FilterConfig;
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import javax.servlet.ServletException;
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import javax.servlet.ServletRequest;
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import javax.servlet.ServletResponse;
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import javax.servlet.http.HttpServletRequest;
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import org.gcube.datatransfer.resolver.gis.geonetwork.GeonetworkResolver;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* The Class UriResolverRewriteFilter.
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*
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* @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
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* Apr 5, 2016
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*/
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public class UriResolverRewriteFilter implements Filter{
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public static final String SERVLET_GEONETWORK = "/geonetwork";
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protected static final String SMP_ID = "smp-id";
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protected static final String SERVLET_RESOLVER_BY_ID = "id";
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protected static final Logger logger = LoggerFactory.getLogger(UriResolverRewriteFilter.class);
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private FilterConfig config;
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/* (non-Javadoc)
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* @see javax.servlet.Filter#destroy()
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*/
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@Override
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public void destroy() {
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logger.trace("run destroy");
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}
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/* (non-Javadoc)
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* @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse, javax.servlet.FilterChain)
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*/
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@Override
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public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
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HttpServletRequest request = (HttpServletRequest) req;
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String requestURI = request.getRequestURI();
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String queryString = request.getQueryString();
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logger.debug("Request URI: " + requestURI + ", QueryString: " +queryString+ ", Servlet path: "+request.getServletPath());
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//IS A REQUEST FOR GEONETWORK AUTHENTICATION? (CKAN HARVESTING?)
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if(isGeonetworkRequest(request.getServletPath())){
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logger.debug("is geonetwork");
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String path = request.getServletPath();
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String scope = getScope(path);
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String newURI = SERVLET_GEONETWORK + "?" + GeonetworkResolver.SCOPE + "=" + scope;
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logger.debug("forward "+newURI);
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req.getRequestDispatcher(newURI).forward(req, res);
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}else{
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//IS WORKSPACE REQUEST?
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if (queryString == null) { // IS A /XXXXX
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logger.debug("QueryString is null, is It a new SMP public uri by ID?");
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int lastSlash = requestURI.lastIndexOf("/");
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if (lastSlash + 1 == requestURI.length()) {
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logger.debug("'/' is last index, doFilter Request");
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// req.getRequestDispatcher("/").forward(req, res);
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chain.doFilter(req, res);
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}
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else {
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String toStorageID = requestURI.substring(lastSlash + 1, requestURI.length());
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// String newURI = requestURI.replace(toReplace,
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// SERVLET_RESOLVER_BY_ID+"?"+SMP_ID+"="+toReplace);
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String newURI = SERVLET_RESOLVER_BY_ID + "?" + SMP_ID + "=" + toStorageID;
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logger.debug("forward to: " + newURI);
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req.getRequestDispatcher(newURI).forward(req, res);
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}
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}
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else {
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logger.debug("is NOT a SMP public uri by ID, doFilter Request");
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chain.doFilter(req, res);
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}
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}
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}
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/**
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* Gets the scope.
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*
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* @param servletPath the servlet path
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* @return the scope
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*/
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private String getScope(String servletPath){
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logger.debug("Read servlet path: "+servletPath);
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String scope = servletPath.substring(servletPath.lastIndexOf("/"), servletPath.length());
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return scope.replaceAll("_", "/");
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}
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/**
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* Checks if is geonetwork request.
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*
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* @param servletPath the servlet path
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* @return true, if is geonetwork request
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*/
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private boolean isGeonetworkRequest(String servletPath){
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return servletPath.startsWith(SERVLET_GEONETWORK);
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}
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/* (non-Javadoc)
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* @see javax.servlet.Filter#init(javax.servlet.FilterConfig)
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*/
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@Override
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public void init(FilterConfig config) throws ServletException {
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logger.trace("run init");
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this.config = config;
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}
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}
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