1 files changed, 180 insertions, 0 deletions
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/group/GroupsCollection.java b/gerrit-server/src/main/java/com/google/gerrit/server/group/GroupsCollection.java
new file mode 100644
index 0000000000..918a5301e0
--- /dev/null
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/group/GroupsCollection.java
@@ -0,0 +1,180 @@
+// Copyright (C) 2013 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.group;
+
+import com.google.gerrit.common.data.GroupDescription;
+import com.google.gerrit.common.data.GroupDescriptions;
+import com.google.gerrit.common.data.GroupReference;
+import com.google.gerrit.common.errors.NoSuchGroupException;
+import com.google.gerrit.extensions.registration.DynamicMap;
+import com.google.gerrit.extensions.restapi.AcceptsCreate;
+import com.google.gerrit.extensions.restapi.AuthException;
+import com.google.gerrit.extensions.restapi.IdString;
+import com.google.gerrit.extensions.restapi.ResourceNotFoundException;
+import com.google.gerrit.extensions.restapi.RestCollection;
+import com.google.gerrit.extensions.restapi.RestView;
+import com.google.gerrit.extensions.restapi.TopLevelResource;
+import com.google.gerrit.extensions.restapi.UnprocessableEntityException;
+import com.google.gerrit.reviewdb.client.AccountGroup;
+import com.google.gerrit.server.AnonymousUser;
+import com.google.gerrit.server.CurrentUser;
+import com.google.gerrit.server.IdentifiedUser;
+import com.google.gerrit.server.account.GroupBackend;
+import com.google.gerrit.server.account.GroupBackends;
+import com.google.gerrit.server.account.GroupControl;
+import com.google.inject.Inject;
+import com.google.inject.Provider;
+
+public class GroupsCollection implements
+    RestCollection<TopLevelResource, GroupResource>,
+    AcceptsCreate<TopLevelResource> {
+  private final DynamicMap<RestView<GroupResource>> views;
+  private final Provider<ListGroups> list;
+  private final CreateGroup.Factory createGroup;
+  private final GroupControl.Factory groupControlFactory;
+  private final GroupBackend groupBackend;
+  private final Provider<CurrentUser> self;
+
+  @Inject
+  GroupsCollection(final DynamicMap<RestView<GroupResource>> views,
+      final Provider<ListGroups> list,
+      final CreateGroup.Factory createGroup,
+      final GroupControl.Factory groupControlFactory,
+      final GroupBackend groupBackend,
+      final Provider<CurrentUser> self) {
+    this.views = views;
+    this.list = list;
+    this.createGroup = createGroup;
+    this.groupControlFactory = groupControlFactory;
+    this.groupBackend = groupBackend;
+    this.self = self;
+  }
+
+  @Override
+  public RestView<TopLevelResource> list() throws ResourceNotFoundException,
+      AuthException {
+    final CurrentUser user = self.get();
+    if (user instanceof AnonymousUser) {
+      throw new AuthException("Authentication required");
+    } else if(!(user instanceof IdentifiedUser)) {
+      throw new ResourceNotFoundException();
+    }
+
+    return list.get();
+  }
+
+  @Override
+  public GroupResource parse(TopLevelResource parent, IdString id)
+      throws AuthException, ResourceNotFoundException {
+    final CurrentUser user = self.get();
+    if (user instanceof AnonymousUser) {
+      throw new AuthException("Authentication required");
+    } else if(!(user instanceof IdentifiedUser)) {
+      throw new ResourceNotFoundException(id);
+    }
+
+    GroupDescription.Basic group = _parse(id.get());
+    if (group == null) {
+      throw new ResourceNotFoundException(id.get());
+    }
+    GroupControl ctl = groupControlFactory.controlFor(group);
+    if (!ctl.isVisible()) {
+      throw new ResourceNotFoundException(id);
+    }
+    return new GroupResource(ctl);
+  }
+
+  /**
+   * Parses a group ID from a request body and returns the group.
+   *
+   * @param id ID of the group, can be a group UUID, a group name or a legacy
+   *        group ID
+   * @return the group
+   * @throws UnprocessableEntityException thrown if the group ID cannot be
+   *         resolved or if the group is not visible to the calling user
+   */
+  public GroupDescription.Basic parse(String id)
+      throws UnprocessableEntityException {
+    GroupDescription.Basic group = _parse(id);
+    if (group == null || !groupControlFactory.controlFor(group).isVisible()) {
+      throw new UnprocessableEntityException(String.format(
+          "Group Not Found: %s", id));
+    }
+    return group;
+  }
+
+  /**
+   * Parses a group ID from a request body and returns the group if it is a
+   * Gerrit internal group.
+   *
+   * @param id ID of the group, can be a group UUID, a group name or a legacy
+   *        group ID
+   * @return the group
+   * @throws UnprocessableEntityException thrown if the group ID cannot be
+   *         resolved, if the group is not visible to the calling user or if
+   *         it's an external group
+   */
+  public GroupDescription.Basic parseInternal(String id)
+      throws UnprocessableEntityException {
+    GroupDescription.Basic group = parse(id);
+    if (GroupDescriptions.toAccountGroup(group) == null) {
+      throw new UnprocessableEntityException(String.format(
+          "External Group Not Allowed: %s", id));
+    }
+    return group;
+  }
+
+  private GroupDescription.Basic _parse(String id) {
+    AccountGroup.UUID uuid = new AccountGroup.UUID(id);
+    if (groupBackend.handles(uuid)) {
+      GroupDescription.Basic d = groupBackend.get(uuid);
+      if (d != null) {
+        return d;
+      }
+    }
+
+    // Might be a legacy AccountGroup.Id.
+    if (id.matches("^[1-9][0-9]*$")) {
+      try {
+        AccountGroup.Id legacyId = AccountGroup.Id.parse(id);
+        return groupControlFactory.controlFor(legacyId).getGroup();
+      } catch (IllegalArgumentException invalidId) {
+      } catch (NoSuchGroupException e) {
+      }
+    }
+
+    // Might be a group name, be nice and accept unique names.
+    GroupReference ref = GroupBackends.findExactSuggestion(groupBackend, id);
+    if (ref != null) {
+      GroupDescription.Basic d = groupBackend.get(ref.getUUID());
+      if (d != null) {
+        return d;
+      }
+    }
+
+    return null;
+  }
+
+  @SuppressWarnings("unchecked")
+  @Override
+  public CreateGroup create(TopLevelResource root, IdString name) {
+    return createGroup.create(name.get());
+  }
+
+  @Override
+  public DynamicMap<RestView<GroupResource>> views() {
+    return views;
+  }
+}