| /* |
| * 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.server; |
| |
| import javax.servlet.ServletException; |
| import org.apache.hadoop.hdds.utils.DBCheckpointServlet; |
| import org.apache.hadoop.ozone.OzoneConsts; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.Collections; |
| |
| /** |
| * Provides the current checkpoint Snapshot of the SCM DB. (tar.gz) |
| * |
| * When Ozone ACL is enabled (`ozone.acl.enabled`=`true`), only users/principals |
| * configured in `ozone.administrator` (along with the user that starts OM, |
| * which automatically becomes an Ozone administrator but not necessarily in |
| * the config) are allowed to access this endpoint. |
| * |
| * If Kerberos is enabled, the principal should be appended to |
| * `ozone.administrator`, e.g. `scm/scm@EXAMPLE.COM` |
| * If Kerberos is not enabled, simply append the login user name to |
| * `ozone.administrator`, e.g. `scm` |
| */ |
| public class SCMDBCheckpointServlet extends DBCheckpointServlet { |
| |
| private static final Logger LOG = |
| LoggerFactory.getLogger(SCMDBCheckpointServlet.class); |
| private static final long serialVersionUID = 1L; |
| |
| @Override |
| public void init() throws ServletException { |
| |
| StorageContainerManager scm = (StorageContainerManager) getServletContext() |
| .getAttribute(OzoneConsts.SCM_CONTEXT_ATTRIBUTE); |
| |
| if (scm == null) { |
| LOG.error("Unable to initialize SCMDBCheckpointServlet. SCM is null"); |
| return; |
| } |
| |
| initialize(scm.getScmMetadataStore().getStore(), |
| scm.getMetrics().getDBCheckpointMetrics(), |
| false, |
| Collections.emptyList(), |
| Collections.emptyList(), |
| false); |
| } |
| } |