| /* |
| * 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.hdds.scm.safemode; |
| |
| import java.util.concurrent.atomic.AtomicBoolean; |
| import org.apache.hadoop.hdds.conf.ConfigurationSource; |
| import org.apache.hadoop.hdds.HddsConfigKeys; |
| import org.apache.hadoop.hdds.protocol.proto.HddsProtos.ScmOps; |
| import org.apache.hadoop.hdds.scm.exceptions.SCMException; |
| import org.apache.hadoop.hdds.scm.exceptions.SCMException.ResultCodes; |
| |
| /** |
| * Safe mode pre-check for SCM operations. |
| * */ |
| public class SafeModePrecheck implements Precheck<ScmOps> { |
| |
| private AtomicBoolean inSafeMode; |
| public static final String PRECHECK_TYPE = "SafeModePrecheck"; |
| |
| public SafeModePrecheck(ConfigurationSource conf) { |
| boolean safeModeEnabled = conf.getBoolean( |
| HddsConfigKeys.HDDS_SCM_SAFEMODE_ENABLED, |
| HddsConfigKeys.HDDS_SCM_SAFEMODE_ENABLED_DEFAULT); |
| if (safeModeEnabled) { |
| inSafeMode = new AtomicBoolean(true); |
| } else { |
| inSafeMode = new AtomicBoolean(false); |
| } |
| } |
| |
| @Override |
| public boolean check(ScmOps op) throws SCMException { |
| if (inSafeMode.get() && SafeModeRestrictedOps |
| .isRestrictedInSafeMode(op)) { |
| throw new SCMException("SafeModePrecheck failed for " + op, |
| ResultCodes.SAFE_MODE_EXCEPTION); |
| } |
| return inSafeMode.get(); |
| } |
| |
| @Override |
| public String type() { |
| return PRECHECK_TYPE; |
| } |
| |
| public boolean isInSafeMode() { |
| return inSafeMode.get(); |
| } |
| |
| public void setInSafeMode(boolean inSafeMode) { |
| this.inSafeMode.set(inSafeMode); |
| } |
| } |