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.ModularDistribution;
  15 import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
  16
  17 public class ModularDistributionInterceptor extends HandlerInterceptorAdapter {
  18         private Set<ModularDistribution> modularDistributions;
  19
  20         public final static String RELEASE = "RELEASE";
  21         public final static String LATEST = "LATEST";
  22
  23         @Override
  24         public boolean preHandle(HttpServletRequest request,
  25                         HttpServletResponse response, Object handler) throws Exception {
  26                 String path = request.getPathInfo();
  27                 StringTokenizer stS = new StringTokenizer(path, "/");
  28                 String distributionName = stS.nextToken();
  29                 String distributionVersion = stS.nextToken();
  30
  31                 SortedMap<String, ModularDistribution> choices = new TreeMap<String, ModularDistribution>();
  32                 distribs: for (Iterator<ModularDistribution> it = modularDistributions
  33                                 .iterator(); it.hasNext();) {
  34                         ModularDistribution md = it.next();
  35                         if (md.getName().equals(distributionName)) {
  36                                 if (distributionVersion.equals(RELEASE)
  37                                                 && md.getVersion().contains("SNAPSHOT"))
  38                                         continue distribs;
  39
  40                                 else if (distributionVersion.equals(LATEST))
  41                                         choices.put(md.getVersion(), md);
  42                                 else if (distributionVersion.equals(md.getVersion())) {
  43                                         choices.put(md.getVersion(), md);
  44                                         break distribs;
  45                                 }
  46                         }
  47                 }
  48
  49                 if (choices.size() == 0)
  50                         throw new SlcException("Cannot find distribution for "
  51                                         + new BasicNameVersion(distributionName,
  52                                                         distributionVersion));
  53
  54                 ModularDistribution modularDistribution = choices.get(choices
  55                                 .firstKey());
  56
  57                 request.setAttribute("modularDistribution", modularDistribution);
  58
  59                 return true;
  60         }
  61
  62         public void setModularDistributions(
  63                         Set<ModularDistribution> modularDistributions) {
  64                 this.modularDistributions = modularDistributions;
  65         }
  66
  67 }