1 files changed, 145 insertions, 0 deletions
diff --git a/java/com/google/gerrit/server/restapi/config/ListTasks.java b/java/com/google/gerrit/server/restapi/config/ListTasks.java
new file mode 100644
index 0000000000..7402c15b21
--- /dev/null
+++ b/java/com/google/gerrit/server/restapi/config/ListTasks.java
@@ -0,0 +1,145 @@
+// 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.extensions.restapi.AuthException;
+import com.google.gerrit.extensions.restapi.RestReadView;
+import com.google.gerrit.reviewdb.client.Project;
+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.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 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 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 = new Project.NameKey(task.projectName);
+          ProjectState state = projectCache.get(nameKey);
+          if (state == null || !state.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 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 = new Timestamp(task.getStartTime().getTime());
+      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();
+      }
+    }
+  }
+}