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// Copyright (C) 2014 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.config;
import static java.util.Comparator.comparing;
import static java.util.stream.Collectors.toList;
import com.google.gerrit.entities.Project;
import com.google.gerrit.extensions.restapi.AuthException;
import com.google.gerrit.extensions.restapi.Response;
import com.google.gerrit.extensions.restapi.RestReadView;
import com.google.gerrit.server.CurrentUser;
import com.google.gerrit.server.config.ConfigResource;
import com.google.gerrit.server.git.WorkQueue;
import com.google.gerrit.server.git.WorkQueue.ProjectTask;
import com.google.gerrit.server.git.WorkQueue.Task;
import com.google.gerrit.server.ioutil.HexFormat;
import com.google.gerrit.server.permissions.GlobalPermission;
import com.google.gerrit.server.permissions.PermissionBackend;
import com.google.gerrit.server.permissions.PermissionBackendException;
import com.google.gerrit.server.permissions.ProjectPermission;
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.sql.Timestamp;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.TimeUnit;
@Singleton
public class ListTasks implements RestReadView<ConfigResource> {
private final PermissionBackend permissionBackend;
private final WorkQueue workQueue;
private final Provider<CurrentUser> self;
private final ProjectCache projectCache;
@Inject
public ListTasks(
PermissionBackend permissionBackend,
WorkQueue workQueue,
Provider<CurrentUser> self,
ProjectCache projectCache) {
this.permissionBackend = permissionBackend;
this.workQueue = workQueue;
this.self = self;
this.projectCache = projectCache;
}
@Override
public Response<List<TaskInfo>> apply(ConfigResource resource)
throws AuthException, PermissionBackendException {
CurrentUser user = self.get();
if (!user.isIdentifiedUser()) {
throw new AuthException("Authentication required");
}
List<TaskInfo> allTasks = getTasks();
try {
permissionBackend.user(user).check(GlobalPermission.VIEW_QUEUE);
return Response.ok(allTasks);
} catch (AuthException e) {
// Fall through to filter tasks.
}
Map<String, Boolean> visibilityCache = new HashMap<>();
List<TaskInfo> visibleTasks = new ArrayList<>();
for (TaskInfo task : allTasks) {
if (task.projectName != null) {
Boolean visible = visibilityCache.get(task.projectName);
if (visible == null) {
Project.NameKey nameKey = Project.nameKey(task.projectName);
Optional<ProjectState> state = projectCache.get(nameKey);
if (!state.isPresent() || !state.get().statePermitsRead()) {
visible = false;
} else {
try {
permissionBackend.user(user).project(nameKey).check(ProjectPermission.ACCESS);
visible = true;
} catch (AuthException e) {
visible = false;
}
}
visibilityCache.put(task.projectName, visible);
}
if (visible) {
visibleTasks.add(task);
}
}
}
return Response.ok(visibleTasks);
}
private List<TaskInfo> getTasks() {
return workQueue.getTaskInfos(TaskInfo::new).stream()
.sorted(
comparing((TaskInfo t) -> t.state.ordinal())
.thenComparing(t -> t.delay)
.thenComparing(t -> t.command))
.collect(toList());
}
public static class TaskInfo {
public String id;
public Task.State state;
public Timestamp startTime;
public long delay;
public String command;
public String remoteName;
public String projectName;
public String queueName;
public TaskInfo(Task<?> task) {
this.id = HexFormat.fromInt(task.getTaskId());
this.state = task.getState();
this.startTime = Timestamp.from(task.getStartTime());
this.delay = task.getDelay(TimeUnit.MILLISECONDS);
this.command = task.toString();
this.queueName = task.getQueueName();
if (task instanceof ProjectTask) {
ProjectTask<?> projectTask = ((ProjectTask<?>) task);
Project.NameKey name = projectTask.getProjectNameKey();
if (name != null) {
this.projectName = name.get();
}
this.remoteName = projectTask.getRemoteName();
}
}
}
}