runtime/org.argeo.slc.server/src/main/java/org/argeo/slc/web/mvc/provisioning/ModularDistributionInterceptor.java

   1 package org.argeo.slc.web.mvc.provisioning;
   2
   3 import java.util.Iterator;
   4 import java.util.Set;
   5 import java.util.SortedMap;
   6 import java.util.StringTokenizer;
   7 import java.util.TreeMap;
   8
   9 import javax.servlet.http.HttpServletRequest;
  10 import javax.servlet.http.HttpServletResponse;
  11
  12 import org.argeo.slc.SlcException;
  13 import org.argeo.slc.build.BasicNameVersion;
  14 import org.argeo.slc.build.BuildConstants;
  15 import org.argeo.slc.build.ModularDistribution;
  16 import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
  17
  18 public class ModularDistributionInterceptor extends HandlerInterceptorAdapter {
  19         private Set<ModularDistribution> modularDistributions;
  20
  21         @Override
  22         public boolean preHandle(HttpServletRequest request,
  23                         HttpServletResponse response, Object handler) throws Exception {
  24                 String path = request.getPathInfo();
  25                 StringTokenizer stS = new StringTokenizer(path, "/");
  26                 String distributionName = stS.nextToken();
  27                 String distributionVersion = stS.nextToken();
  28
  29                 SortedMap<String, ModularDistribution> choices = new TreeMap<String, ModularDistribution>();
  30                 distribs: for (Iterator<ModularDistribution> it = modularDistributions
  31                                 .iterator(); it.hasNext();) {
  32                         ModularDistribution md = it.next();
  33                         if (md.getName().equals(distributionName)) {
  34                                 if (distributionVersion.equals(BuildConstants.RELEASE)
  35                                                 && md.getVersion().contains(BuildConstants.SNAPSHOT))
  36                                         continue distribs;
  37
  38                                 else if (distributionVersion.equals(BuildConstants.LATEST))
  39                                         choices.put(md.getVersion(), md);
  40                                 else if (distributionVersion.equals(md.getVersion())) {
  41                                         choices.put(md.getVersion(), md);
  42                                         break distribs;
  43                                 }
  44                         }
  45                 }
  46
  47                 if (choices.size() == 0)
  48                         throw new SlcException("Cannot find distribution for "
  49                                         + new BasicNameVersion(distributionName,
  50                                                         distributionVersion));
  51
  52                 ModularDistribution modularDistribution = choices.get(choices
  53                                 .firstKey());
  54
  55                 request.setAttribute("modularDistribution", modularDistribution);
  56
  57                 return true;
  58         }
  59
  60         public void setModularDistributions(
  61                         Set<ModularDistribution> modularDistributions) {
  62                 this.modularDistributions = modularDistributions;
  63         }
  64
  65 }