Expose supported UIs in GetServerInfo

Requires moving GerritInfo into gerrit-server.

Change-Id: I447c29c553e693c4aa02665610101588bdde38c6

Documentation/rest-api-config.txt

@@ -123,7 +123,10 @@ As result a link:#server-info[ServerInfo] entity is returned.
     "gerrit": {
       "all_projects": "All-Projects",
       "all_users": "All-Users"
-      "doc_search": true
+      "doc_search": true,
+      "web_uis": [
+        "gwt"
+      ]
     },
     "sshd": {},
     "suggest": {
@@ -1469,6 +1472,9 @@ link:config-gerrit.html#gerrit.reportBugUrl[URL to report bugs].
 |`report_bug_text`   |optional, not set if default|
 link:config-gerrit.html#gerrit.reportBugText[Display text for report
 bugs link].
+|`web_uis`           ||
+List of web UIs supported by the HTTP server. Possible values are `GWT`
+and `POLYGERRIT`.
 |=================================
 
 [[hit-ration-info]]

gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/rest/config/ServerInfoIT.java

@@ -65,8 +65,10 @@ public class ServerInfoIT extends AbstractDaemonTest {
     // gerrit
     @GerritConfig(name = "gerrit.allProjects", value = "Root"),
     @GerritConfig(name = "gerrit.allUsers", value = "Users"),
-    @GerritConfig(name = "gerrit.reportBugUrl", value = "https://example.com/report"),
+    @GerritConfig(name = "gerrit.enableGwtUi", value = "true"),
+    @GerritConfig(name = "gerrit.enablePolyGerrit", value = "true"),
     @GerritConfig(name = "gerrit.reportBugText", value = "REPORT BUG"),
+    @GerritConfig(name = "gerrit.reportBugUrl", value = "https://example.com/report"),
 
     // suggest
     @GerritConfig(name = "suggest.from", value = "3"),
@@ -108,6 +110,9 @@ public class ServerInfoIT extends AbstractDaemonTest {
     assertThat(i.gerrit.reportBugUrl).isEqualTo("https://example.com/report");
     assertThat(i.gerrit.reportBugText).isEqualTo("REPORT BUG");
 
+    // Acceptance tests force --headless even when UIs are specified in config.
+    assertThat(i.gerrit.webUis).isEmpty();
+
     // plugin
     assertThat(i.plugin.jsResourcePaths).isEmpty();
 

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/common/GerritInfo.java

@@ -14,6 +14,10 @@
 
 package com.google.gerrit.extensions.common;
 
+import com.google.gerrit.extensions.client.UiType;
+
+import java.util.Set;
+
 public class GerritInfo {
   public String allProjects;
   public String allUsers;
@@ -22,4 +26,5 @@ public class GerritInfo {
   public Boolean editGpgKeys;
   public String reportBugUrl;
   public String reportBugText;
+  public Set<UiType> webUis;
 }

gerrit-httpd/src/main/java/com/google/gerrit/httpd/UrlModule.java

@@ -34,6 +34,7 @@ import com.google.gerrit.httpd.rpc.doc.QueryDocumentationFilter;
 import com.google.gerrit.reviewdb.client.Change;
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.server.config.AuthConfig;
+import com.google.gerrit.server.config.GerritOptions;
 import com.google.gwtexpui.server.CacheControlFilter;
 import com.google.inject.Key;
 import com.google.inject.Provider;

gerrit-httpd/src/main/java/com/google/gerrit/httpd/WebModule.java

@@ -25,6 +25,7 @@ import com.google.gerrit.httpd.rpc.UiRpcModule;
 import com.google.gerrit.lifecycle.LifecycleModule;
 import com.google.gerrit.server.RemotePeer;
 import com.google.gerrit.server.config.AuthConfig;
+import com.google.gerrit.server.config.GerritOptions;
 import com.google.gerrit.server.config.GerritRequestModule;
 import com.google.gerrit.server.config.GitwebCgiConfig;
 import com.google.gerrit.server.git.AsyncReceiveCommits;

gerrit-httpd/src/main/java/com/google/gerrit/httpd/raw/StaticModule.java

@@ -22,11 +22,11 @@ import static java.nio.file.Files.isReadable;
 import com.google.common.cache.Cache;
 import com.google.common.collect.ImmutableList;
 import com.google.gerrit.extensions.client.UiType;
-import com.google.gerrit.httpd.GerritOptions;
 import com.google.gerrit.httpd.XsrfCookieFilter;
 import com.google.gerrit.httpd.raw.ResourceServlet.Resource;
 import com.google.gerrit.launcher.GerritLauncher;
 import com.google.gerrit.server.cache.CacheModule;
+import com.google.gerrit.server.config.GerritOptions;
 import com.google.gerrit.server.config.GerritServerConfig;
 import com.google.gerrit.server.config.SitePaths;
 import com.google.inject.Inject;

gerrit-pgm/src/main/java/com/google/gerrit/pgm/Daemon.java

@@ -23,7 +23,6 @@ import com.google.gerrit.common.EventBroker;
 import com.google.gerrit.extensions.client.AuthType;
 import com.google.gerrit.gpg.GpgModule;
 import com.google.gerrit.httpd.AllRequestFilter;
-import com.google.gerrit.httpd.GerritOptions;
 import com.google.gerrit.httpd.GetUserFilter;
 import com.google.gerrit.httpd.GitOverHttpModule;
 import com.google.gerrit.httpd.H2CacheBasedWebSession;
@@ -56,6 +55,7 @@ import com.google.gerrit.server.config.CanonicalWebUrlModule;
 import com.google.gerrit.server.config.CanonicalWebUrlProvider;
 import com.google.gerrit.server.config.DownloadConfig;
 import com.google.gerrit.server.config.GerritGlobalModule;
+import com.google.gerrit.server.config.GerritOptions;
 import com.google.gerrit.server.config.GerritServerConfig;
 import com.google.gerrit.server.config.RestCacheAdminModule;
 import com.google.gerrit.server.events.StreamEventsApiListener;

gerrit-server/src/main/java/com/google/gerrit/server/config/GerritOptions.java

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package com.google.gerrit.httpd;
+package com.google.gerrit.server.config;
 
 import static com.google.common.base.MoreObjects.firstNonNull;
 import static com.google.common.base.Preconditions.checkArgument;

gerrit-server/src/main/java/com/google/gerrit/server/config/GetServerInfo.java

@@ -21,6 +21,7 @@ import com.google.common.base.Strings;
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Lists;
 import com.google.gerrit.common.data.ContributorAgreement;
+import com.google.gerrit.extensions.client.UiType;
 import com.google.gerrit.extensions.common.AuthInfo;
 import com.google.gerrit.extensions.common.ChangeConfigInfo;
 import com.google.gerrit.extensions.common.DownloadInfo;
@@ -56,6 +57,7 @@ import org.eclipse.jgit.lib.Config;
 import java.net.MalformedURLException;
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.EnumSet;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
@@ -82,6 +84,7 @@ public class GetServerInfo implements RestReadView<ConfigResource> {
   private final NotesMigration migration;
   private final ProjectCache projectCache;
   private final AgreementJson agreementJson;
+  private final GerritOptions gerritOptions;
 
   @Inject
   public GetServerInfo(
@@ -101,7 +104,8 @@ public class GetServerInfo implements RestReadView<ConfigResource> {
       QueryDocumentationExecutor docSearcher,
       NotesMigration migration,
       ProjectCache projectCache,
-      AgreementJson agreementJson) {
+      AgreementJson agreementJson,
+      GerritOptions gerritOptions) {
     this.config = config;
     this.authConfig = authConfig;
     this.realm = realm;
@@ -119,6 +123,7 @@ public class GetServerInfo implements RestReadView<ConfigResource> {
     this.migration = migration;
     this.projectCache = projectCache;
     this.agreementJson = agreementJson;
+    this.gerritOptions = gerritOptions;
   }
 
   @Override
@@ -280,6 +285,13 @@ public class GetServerInfo implements RestReadView<ConfigResource> {
     info.docSearch = docSearcher.isAvailable();
     info.editGpgKeys = toBoolean(enableSignedPush
         && cfg.getBoolean("gerrit", null, "editGpgKeys", true));
+    info.webUis = EnumSet.noneOf(UiType.class);
+    if (gerritOptions.enableGwtUi()) {
+      info.webUis.add(UiType.GWT);
+    }
+    if (gerritOptions.enablePolyGerrit()) {
+      info.webUis.add(UiType.POLYGERRIT);
+    }
     return info;
   }
 

gerrit-server/src/test/java/com/google/gerrit/testutil/InMemoryModule.java

@@ -36,6 +36,7 @@ import com.google.gerrit.server.config.AnonymousCowardNameProvider;
 import com.google.gerrit.server.config.CanonicalWebUrlModule;
 import com.google.gerrit.server.config.CanonicalWebUrlProvider;
 import com.google.gerrit.server.config.GerritGlobalModule;
+import com.google.gerrit.server.config.GerritOptions;
 import com.google.gerrit.server.config.GerritServerConfig;
 import com.google.gerrit.server.config.GerritServerId;
 import com.google.gerrit.server.config.SitePath;
@@ -150,6 +151,8 @@ public class InMemoryModule extends FactoryModule {
     // TODO(dborowitz): Use jimfs.
     bind(Path.class).annotatedWith(SitePath.class).toInstance(Paths.get("."));
     bind(Config.class).annotatedWith(GerritServerConfig.class).toInstance(cfg);
+    bind(GerritOptions.class)
+        .toInstance(new GerritOptions(cfg, false, false, false));
     bind(PersonIdent.class)
         .annotatedWith(GerritPersonIdent.class)
         .toProvider(GerritPersonIdentProvider.class);

gerrit-war/src/main/java/com/google/gerrit/httpd/WebAppInitializer.java

@@ -38,6 +38,7 @@ import com.google.gerrit.server.config.AuthConfigModule;
 import com.google.gerrit.server.config.CanonicalWebUrlModule;
 import com.google.gerrit.server.config.DownloadConfig;
 import com.google.gerrit.server.config.GerritGlobalModule;
+import com.google.gerrit.server.config.GerritOptions;
 import com.google.gerrit.server.config.GerritServerConfig;
 import com.google.gerrit.server.config.GerritServerConfigModule;
 import com.google.gerrit.server.config.RestCacheAdminModule;