com.google.gerrit.httpd.DirectChangeByCommit Maven / Gradle / Ivy
// Copyright 2011 Google Inc. All Rights Reserved.
package com.google.gerrit.httpd;
import com.google.common.base.CharMatcher;
import com.google.common.collect.ImmutableList;
import com.google.common.flogger.FluentLogger;
import com.google.gerrit.common.PageLinks;
import com.google.gerrit.entities.Change;
import com.google.gerrit.entities.Project;
import com.google.gerrit.extensions.api.changes.Changes;
import com.google.gerrit.extensions.common.ChangeInfo;
import com.google.gerrit.extensions.restapi.RestApiException;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import java.io.IOException;
import java.util.List;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@Singleton
class DirectChangeByCommit extends HttpServlet {
private static final long serialVersionUID = 1L;
private static final FluentLogger logger = FluentLogger.forEnclosingClass();
private final Changes changes;
@Inject
DirectChangeByCommit(Changes changes) {
this.changes = changes;
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse rsp) throws IOException {
String query = CharMatcher.is('/').trimTrailingFrom(req.getPathInfo());
List results;
try {
results = changes.query(query).withLimit(2).get();
} catch (RestApiException e) {
logger.atWarning().withCause(e).log("Cannot process query by URL: /r/%s", query);
results = ImmutableList.of();
}
String token;
if (results.size() == 1) {
// If exactly one change matches, link to that change.
// TODO Link to a specific patch set, if one matched.
ChangeInfo ci = results.iterator().next();
token = PageLinks.toChange(Project.nameKey(ci.project), Change.id(ci._number));
} else {
// Otherwise, link to the query page.
token = PageLinks.toChangeQuery(query);
}
UrlModule.toGerrit(token, req, rsp);
}
}