1 files changed, 109 insertions, 0 deletions
diff --git a/java/com/google/gerrit/server/account/InternalGroupBackend.java b/java/com/google/gerrit/server/account/InternalGroupBackend.java
new file mode 100644
index 0000000000..ea6eb87443
--- /dev/null
+++ b/java/com/google/gerrit/server/account/InternalGroupBackend.java
@@ -0,0 +1,109 @@
+// Copyright (C) 2012 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.gerrit.server.account;
+
+import static java.util.stream.Collectors.toList;
+
+import com.google.common.collect.ImmutableList;
+import com.google.gerrit.common.data.GroupDescription;
+import com.google.gerrit.common.data.GroupReference;
+import com.google.gerrit.reviewdb.client.AccountGroup;
+import com.google.gerrit.server.IdentifiedUser;
+import com.google.gerrit.server.group.InternalGroup;
+import com.google.gerrit.server.group.InternalGroupDescription;
+import com.google.gerrit.server.group.db.Groups;
+import com.google.gerrit.server.group.db.GroupsNoteDbConsistencyChecker;
+import com.google.gerrit.server.project.ProjectState;
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
+import java.io.IOException;
+import java.util.Collection;
+import java.util.Optional;
+import org.eclipse.jgit.errors.ConfigInvalidException;
+import org.eclipse.jgit.lib.ObjectId;
+
+/** Implementation of GroupBackend for the internal group system. */
+@Singleton
+public class InternalGroupBackend implements GroupBackend {
+  private final GroupControl.Factory groupControlFactory;
+  private final GroupCache groupCache;
+  private final Groups groups;
+  private final IncludingGroupMembership.Factory groupMembershipFactory;
+
+  @Inject
+  InternalGroupBackend(
+      GroupControl.Factory groupControlFactory,
+      GroupCache groupCache,
+      Groups groups,
+      IncludingGroupMembership.Factory groupMembershipFactory) {
+    this.groupControlFactory = groupControlFactory;
+    this.groupCache = groupCache;
+    this.groups = groups;
+    this.groupMembershipFactory = groupMembershipFactory;
+  }
+
+  @Override
+  public boolean handles(AccountGroup.UUID uuid) {
+    // See AccountGroup.isInternalGroup
+    return ObjectId.isId(uuid.get()); // [0-9a-f]{40};
+  }
+
+  @Override
+  public GroupDescription.Internal get(AccountGroup.UUID uuid) {
+    if (!handles(uuid)) {
+      return null;
+    }
+
+    return groupCache.get(uuid).map(InternalGroupDescription::new).orElse(null);
+  }
+
+  @Override
+  public Collection<GroupReference> suggest(String name, ProjectState project) {
+    try {
+      return groups
+          .getAllGroupReferences()
+          .filter(group -> startsWithIgnoreCase(group, name))
+          .filter(this::isVisible)
+          .collect(toList());
+    } catch (IOException | ConfigInvalidException e) {
+      return ImmutableList.of();
+    }
+  }
+
+  private static boolean startsWithIgnoreCase(GroupReference group, String name) {
+    return group.getName().regionMatches(true, 0, name, 0, name.length());
+  }
+
+  private boolean isVisible(GroupReference groupReference) {
+    Optional<InternalGroup> group = groupCache.get(groupReference.getUUID());
+    if (!group.isPresent()) {
+      // groupRefs are read from group name notes. There is an inconsistency if this lookup fails.
+      GroupsNoteDbConsistencyChecker.logFailToLoadFromGroupRefAsWarning(groupReference.getUUID());
+      return false;
+    }
+    return groupControlFactory.controlFor(new InternalGroupDescription(group.get())).isVisible();
+  }
+
+  @Override
+  public GroupMembership membershipsOf(IdentifiedUser user) {
+    return groupMembershipFactory.create(user);
+  }
+
+  @Override
+  public boolean isVisibleToAll(AccountGroup.UUID uuid) {
+    GroupDescription.Internal g = get(uuid);
+    return g != null && g.isVisibleToAll();
+  }
+}