Line data    Source code

       1             : // Copyright 2011 Google Inc. All Rights Reserved.
       2             : 
       3             : package com.google.gerrit.httpd;
       4             : 
       5             : import com.google.common.base.CharMatcher;
       6             : import com.google.common.collect.ImmutableList;
       7             : import com.google.common.flogger.FluentLogger;
       8             : import com.google.gerrit.common.PageLinks;
       9             : import com.google.gerrit.entities.Change;
      10             : import com.google.gerrit.entities.Project;
      11             : import com.google.gerrit.extensions.api.changes.Changes;
      12             : import com.google.gerrit.extensions.common.ChangeInfo;
      13             : import com.google.gerrit.extensions.restapi.RestApiException;
      14             : import com.google.inject.Inject;
      15             : import com.google.inject.Singleton;
      16             : import java.io.IOException;
      17             : import java.util.List;
      18             : import javax.servlet.http.HttpServlet;
      19             : import javax.servlet.http.HttpServletRequest;
      20             : import javax.servlet.http.HttpServletResponse;
      21             : 
      22             : @Singleton
      23             : class DirectChangeByCommit extends HttpServlet {
      24             :   private static final long serialVersionUID = 1L;
      25             : 
      26          99 :   private static final FluentLogger logger = FluentLogger.forEnclosingClass();
      27             : 
      28             :   private final Changes changes;
      29             : 
      30             :   @Inject
      31          99 :   DirectChangeByCommit(Changes changes) {
      32          99 :     this.changes = changes;
      33          99 :   }
      34             : 
      35             :   @Override
      36             :   protected void doGet(HttpServletRequest req, HttpServletResponse rsp) throws IOException {
      37           0 :     String query = CharMatcher.is('/').trimTrailingFrom(req.getPathInfo());
      38             :     List<ChangeInfo> results;
      39             :     try {
      40           0 :       results = changes.query(query).withLimit(2).get();
      41           0 :     } catch (RestApiException e) {
      42           0 :       logger.atWarning().withCause(e).log("Cannot process query by URL: /r/%s", query);
      43           0 :       results = ImmutableList.of();
      44           0 :     }
      45             :     String token;
      46           0 :     if (results.size() == 1) {
      47             :       // If exactly one change matches, link to that change.
      48             :       // TODO Link to a specific patch set, if one matched.
      49           0 :       ChangeInfo ci = results.iterator().next();
      50           0 :       token = PageLinks.toChange(Project.nameKey(ci.project), Change.id(ci._number));
      51           0 :     } else {
      52             :       // Otherwise, link to the query page.
      53           0 :       token = PageLinks.toChangeQuery(query);
      54             :     }
      55           0 :     UrlModule.toGerrit(token, req, rsp);
      56           0 :   }
      57             : }