| // 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.restapi.change; |
| |
| import com.google.gerrit.entities.Change; |
| import com.google.gerrit.entities.Project; |
| import com.google.gerrit.extensions.registration.DynamicMap; |
| import com.google.gerrit.extensions.restapi.IdString; |
| import com.google.gerrit.extensions.restapi.ResourceConflictException; |
| import com.google.gerrit.extensions.restapi.ResourceNotFoundException; |
| import com.google.gerrit.extensions.restapi.RestApiException; |
| 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.server.CurrentUser; |
| import com.google.gerrit.server.change.ChangeFinder; |
| import com.google.gerrit.server.change.ChangeResource; |
| import com.google.gerrit.server.notedb.ChangeNotes; |
| import com.google.gerrit.server.permissions.ChangePermission; |
| import com.google.gerrit.server.permissions.PermissionBackend; |
| import com.google.gerrit.server.permissions.PermissionBackendException; |
| import com.google.gerrit.server.project.ProjectCache; |
| import com.google.gerrit.server.project.ProjectState; |
| import com.google.inject.Inject; |
| import com.google.inject.Provider; |
| import com.google.inject.Singleton; |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.Optional; |
| |
| @Singleton |
| public class ChangesCollection implements RestCollection<TopLevelResource, ChangeResource> { |
| private final Provider<CurrentUser> user; |
| private final Provider<QueryChanges> queryFactory; |
| private final DynamicMap<RestView<ChangeResource>> views; |
| private final ChangeFinder changeFinder; |
| private final ChangeResource.Factory changeResourceFactory; |
| private final PermissionBackend permissionBackend; |
| private final ProjectCache projectCache; |
| |
| @Inject |
| public ChangesCollection( |
| Provider<CurrentUser> user, |
| Provider<QueryChanges> queryFactory, |
| DynamicMap<RestView<ChangeResource>> views, |
| ChangeFinder changeFinder, |
| ChangeResource.Factory changeResourceFactory, |
| PermissionBackend permissionBackend, |
| ProjectCache projectCache) { |
| this.user = user; |
| this.queryFactory = queryFactory; |
| this.views = views; |
| this.changeFinder = changeFinder; |
| this.changeResourceFactory = changeResourceFactory; |
| this.permissionBackend = permissionBackend; |
| this.projectCache = projectCache; |
| } |
| |
| @Override |
| public QueryChanges list() { |
| return queryFactory.get(); |
| } |
| |
| @Override |
| public DynamicMap<RestView<ChangeResource>> views() { |
| return views; |
| } |
| |
| @Override |
| public ChangeResource parse(TopLevelResource root, IdString id) |
| throws RestApiException, PermissionBackendException, IOException { |
| List<ChangeNotes> notes = changeFinder.find(id.encoded(), 2); |
| if (notes.isEmpty()) { |
| throw new ResourceNotFoundException(id); |
| } else if (notes.size() != 1) { |
| throw new ResourceNotFoundException("Multiple changes found for " + id); |
| } |
| |
| ChangeNotes change = notes.get(0); |
| if (!canRead(change)) { |
| throw new ResourceNotFoundException(id); |
| } |
| checkProjectStatePermitsRead(change.getProjectName()); |
| return changeResourceFactory.create(change, user.get()); |
| } |
| |
| public ChangeResource parse(Change.Id id) |
| throws ResourceConflictException, ResourceNotFoundException, PermissionBackendException { |
| List<ChangeNotes> notes = changeFinder.find(id); |
| if (notes.isEmpty()) { |
| throw new ResourceNotFoundException(toIdString(id)); |
| } else if (notes.size() != 1) { |
| throw new ResourceNotFoundException("Multiple changes found for " + id); |
| } |
| |
| ChangeNotes change = notes.get(0); |
| if (!canRead(change)) { |
| throw new ResourceNotFoundException(toIdString(id)); |
| } |
| checkProjectStatePermitsRead(change.getProjectName()); |
| return changeResourceFactory.create(change, user.get()); |
| } |
| |
| private static IdString toIdString(Change.Id id) { |
| return IdString.fromDecoded(id.toString()); |
| } |
| |
| public ChangeResource parse(ChangeNotes notes, CurrentUser user) { |
| return changeResourceFactory.create(notes, user); |
| } |
| |
| private boolean canRead(ChangeNotes notes) throws PermissionBackendException { |
| if (!permissionBackend.currentUser().change(notes).test(ChangePermission.READ)) { |
| return false; |
| } |
| Optional<ProjectState> projectState = projectCache.get(notes.getProjectName()); |
| if (!projectState.isPresent()) { |
| return false; |
| } |
| return projectState.get().statePermitsRead(); |
| } |
| |
| private void checkProjectStatePermitsRead(Project.NameKey project) |
| throws ResourceNotFoundException, ResourceConflictException { |
| projectCache |
| .get(project) |
| .orElseThrow(() -> new ResourceNotFoundException("project not found: " + project.get())) |
| .checkStatePermitsRead(); |
| } |
| } |