YARN-10985. Add some tests to verify ACL behaviour in CapacitySchedulerConfiguration

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestCapacitySchedulerConfiguration.java

@@ -0,0 +1,160 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity;
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.security.authorize.AccessControlList;
+import org.apache.hadoop.util.Sets;
+import org.apache.hadoop.yarn.api.records.QueueACL;
+import org.junit.Test;
+
+import java.util.Set;
+
+import static org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacitySchedulerConfiguration.ROOT;
+import static org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacitySchedulerConfiguration.getQueuePrefix;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+public class TestCapacitySchedulerConfiguration {
+
+  private static final String ROOT_TEST = ROOT + ".test";
+  private static final String EMPTY_ACL = "";
+  private static final String SPACE_ACL = " ";
+  private static final String USER1 = "user1";
+  private static final String USER2 = "user2";
+  private static final String GROUP1 = "group1";
+  private static final String GROUP2 = "group2";
+  public static final String ONE_USER_ONE_GROUP_ACL = USER1 + " " + GROUP1;
+  public static final String TWO_USERS_TWO_GROUPS_ACL =
+      USER1 + "," + USER2 + " " + GROUP1 + ", " + GROUP2;
+
+  private CapacitySchedulerConfiguration createDefaultCsConf() {
+    return new CapacitySchedulerConfiguration(new Configuration(false), false);
+  }
+
+  private AccessControlList getSubmitAcl(CapacitySchedulerConfiguration csConf, String queue) {
+    return csConf.getAcl(queue, QueueACL.SUBMIT_APPLICATIONS);
+  }
+
+  private void setSubmitAppsConfig(CapacitySchedulerConfiguration csConf, String queue,
+      String value) {
+    csConf.set(getSubmitAppsConfigKey(queue), value);
+  }
+
+  private String getSubmitAppsConfigKey(String queue) {
+    return getQueuePrefix(queue) + "acl_submit_applications";
+  }
+
+  private void testWithGivenAclNoOneHasAccess(String queue, String aclValue) {
+    testWithGivenAclNoOneHasAccessInternal(queue, queue, aclValue);
+  }
+
+  private void testWithGivenAclNoOneHasAccess(String queueToSet, String queueToVerify,
+      String aclValue) {
+    testWithGivenAclNoOneHasAccessInternal(queueToSet, queueToVerify, aclValue);
+  }
+
+  private void testWithGivenAclNoOneHasAccessInternal(String queueToSet, String queueToVerify,
+      String aclValue) {
+    CapacitySchedulerConfiguration csConf = createDefaultCsConf();
+    setSubmitAppsConfig(csConf, queueToSet, aclValue);
+    AccessControlList acl = getSubmitAcl(csConf, queueToVerify);
+    assertTrue(acl.getUsers().isEmpty());
+    assertTrue(acl.getGroups().isEmpty());
+    assertFalse(acl.isAllAllowed());
+  }
+
+  private void testWithGivenAclCorrectUserAndGroupHasAccess(String queue, String aclValue,
+      Set<String> expectedUsers, Set<String> expectedGroups) {
+    testWithGivenAclCorrectUserAndGroupHasAccessInternal(queue, queue, aclValue, expectedUsers,
+        expectedGroups);
+  }
+
+  private void testWithGivenAclCorrectUserAndGroupHasAccessInternal(String queueToSet,
+      String queueToVerify, String aclValue, Set<String> expectedUsers,
+      Set<String> expectedGroups) {
+    CapacitySchedulerConfiguration csConf = createDefaultCsConf();
+    setSubmitAppsConfig(csConf, queueToSet, aclValue);
+    AccessControlList acl = getSubmitAcl(csConf, queueToVerify);
+    assertFalse(acl.getUsers().isEmpty());
+    assertFalse(acl.getGroups().isEmpty());
+    assertEquals(expectedUsers, acl.getUsers());
+    assertEquals(expectedGroups, acl.getGroups());
+    assertFalse(acl.isAllAllowed());
+  }
+
+  @Test
+  public void testDefaultSubmitACLForRootAllAllowed() {
+    CapacitySchedulerConfiguration csConf = createDefaultCsConf();
+    AccessControlList acl = getSubmitAcl(csConf, ROOT);
+    assertTrue(acl.getUsers().isEmpty());
+    assertTrue(acl.getGroups().isEmpty());
+    assertTrue(acl.isAllAllowed());
+  }
+
+  @Test
+  public void testDefaultSubmitACLForRootChildNoneAllowed() {
+    CapacitySchedulerConfiguration csConf = createDefaultCsConf();
+    AccessControlList acl = getSubmitAcl(csConf, ROOT_TEST);
+    assertTrue(acl.getUsers().isEmpty());
+    assertTrue(acl.getGroups().isEmpty());
+    assertFalse(acl.isAllAllowed());
+  }
+
+  @Test
+  public void testSpecifiedEmptySubmitACLForRoot() {
+    testWithGivenAclNoOneHasAccess(ROOT, EMPTY_ACL);
+  }
+
+  @Test
+  public void testSpecifiedEmptySubmitACLForRootIsNotInherited() {
+    testWithGivenAclNoOneHasAccess(ROOT, ROOT_TEST, EMPTY_ACL);
+  }
+
+  @Test
+  public void testSpecifiedSpaceSubmitACLForRoot() {
+    testWithGivenAclNoOneHasAccess(ROOT, SPACE_ACL);
+  }
+
+  @Test
+  public void testSpecifiedSpaceSubmitACLForRootIsNotInherited() {
+    testWithGivenAclNoOneHasAccess(ROOT, ROOT_TEST, SPACE_ACL);
+  }
+
+  @Test
+  public void testSpecifiedSubmitACLForRoot() {
+    Set<String> expectedUsers = Sets.newHashSet(USER1);
+    Set<String> expectedGroups = Sets.newHashSet(GROUP1);
+    testWithGivenAclCorrectUserAndGroupHasAccess(ROOT, ONE_USER_ONE_GROUP_ACL, expectedUsers,
+        expectedGroups);
+  }
+
+  @Test
+  public void testSpecifiedSubmitACLForRootIsNotInherited() {
+    testWithGivenAclNoOneHasAccess(ROOT, ROOT_TEST, ONE_USER_ONE_GROUP_ACL);
+  }
+
+  @Test
+  public void testSpecifiedSubmitACLTwoUsersTwoGroupsForRoot() {
+    Set<String> expectedUsers = Sets.newHashSet(USER1, USER2);
+    Set<String> expectedGroups = Sets.newHashSet(GROUP1, GROUP2);
+    testWithGivenAclCorrectUserAndGroupHasAccess(ROOT, TWO_USERS_TWO_GROUPS_ACL, expectedUsers,
+        expectedGroups);
+  }
+
+}