| /** |
| * |
| * 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.atlas.hbase.hook; |
| |
| |
| import org.apache.atlas.plugin.classloader.AtlasPluginClassLoader; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.hbase.NamespaceDescriptor; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.client.RegionInfo; |
| import org.apache.hadoop.hbase.CoprocessorEnvironment; |
| import org.apache.hadoop.hbase.client.SnapshotDescription; |
| import org.apache.hadoop.hbase.client.TableDescriptor; |
| import org.apache.hadoop.hbase.coprocessor.MasterCoprocessor; |
| import org.apache.hadoop.hbase.coprocessor.MasterCoprocessorEnvironment; |
| import org.apache.hadoop.hbase.coprocessor.MasterObserver; |
| import org.apache.hadoop.hbase.coprocessor.ObserverContext; |
| import org.apache.hadoop.hbase.coprocessor.RegionObserver; |
| import org.apache.hadoop.hbase.coprocessor.RegionServerObserver; |
| |
| import java.io.IOException; |
| import java.util.Optional; |
| |
| |
| public class HBaseAtlasCoprocessor implements MasterCoprocessor, MasterObserver, RegionObserver, RegionServerObserver { |
| public static final Log LOG = LogFactory.getLog(HBaseAtlasCoprocessor.class); |
| |
| private static final String ATLAS_PLUGIN_TYPE = "hbase"; |
| private static final String ATLAS_HBASE_HOOK_IMPL_CLASSNAME = "org.apache.atlas.hbase.hook.HBaseAtlasCoprocessor"; |
| |
| private AtlasPluginClassLoader atlasPluginClassLoader = null; |
| private Object impl = null; |
| private MasterObserver implMasterObserver = null; |
| private RegionObserver implRegionObserver = null; |
| private RegionServerObserver implRegionServerObserver = null; |
| private MasterCoprocessor implMasterCoprocessor = null; |
| |
| public HBaseAtlasCoprocessor() { |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("==> HBaseAtlasCoprocessor.HBaseAtlasCoprocessor()"); |
| } |
| |
| this.init(); |
| |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("<== HBaseAtlasCoprocessor.HBaseAtlasCoprocessor()"); |
| } |
| } |
| |
| private void init(){ |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("==> HBaseAtlasCoprocessor.init()"); |
| } |
| |
| try { |
| atlasPluginClassLoader = AtlasPluginClassLoader.getInstance(ATLAS_PLUGIN_TYPE, this.getClass()); |
| |
| @SuppressWarnings("unchecked") |
| Class<?> cls = Class.forName(ATLAS_HBASE_HOOK_IMPL_CLASSNAME, true, atlasPluginClassLoader); |
| |
| activatePluginClassLoader(); |
| |
| impl = cls.newInstance(); |
| implMasterObserver = (MasterObserver)impl; |
| implRegionObserver = (RegionObserver)impl; |
| implRegionServerObserver = (RegionServerObserver)impl; |
| implMasterCoprocessor = (MasterCoprocessor)impl; |
| |
| } catch (Exception e) { |
| // check what need to be done |
| LOG.error("Error Enabling RangerHbasePlugin", e); |
| } finally { |
| deactivatePluginClassLoader(); |
| } |
| |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("<== HBaseAtlasCoprocessor.init()"); |
| } |
| } |
| |
| @Override |
| public Optional<MasterObserver> getMasterObserver() { |
| return Optional.<MasterObserver>of(this); |
| } |
| |
| @Override |
| public void start(CoprocessorEnvironment env) throws IOException { |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("==> HBaseAtlasCoprocessor.start()"); |
| } |
| |
| try { |
| activatePluginClassLoader(); |
| if (env instanceof MasterCoprocessorEnvironment) { |
| implMasterCoprocessor.start(env); |
| } |
| } finally { |
| deactivatePluginClassLoader(); |
| } |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("<== HBaseAtlasCoprocessor.start()"); |
| } |
| } |
| |
| @Override |
| public void postCreateTable(ObserverContext<MasterCoprocessorEnvironment> ctx, TableDescriptor desc, RegionInfo[] regions) throws IOException { |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("==> HBaseAtlasCoprocessor.postCreateTable()"); |
| } |
| |
| try { |
| activatePluginClassLoader(); |
| implMasterObserver.postCreateTable(ctx, desc, regions); |
| } finally { |
| deactivatePluginClassLoader(); |
| } |
| |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("<== HBaseAtlasCoprocessor.postCreateTable()"); |
| } |
| } |
| |
| @Override |
| public void postModifyTable(ObserverContext<MasterCoprocessorEnvironment> ctx, TableName tableName, TableDescriptor htd) throws IOException { |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("==> HBaseAtlasCoprocessor.postModifyTable()"); |
| } |
| |
| try { |
| activatePluginClassLoader(); |
| implMasterObserver.postModifyTable(ctx, tableName, htd); |
| } finally { |
| deactivatePluginClassLoader(); |
| } |
| |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("<== HBaseAtlasCoprocessor.postModifyTable()"); |
| } |
| } |
| |
| @Override |
| public void postDeleteTable(ObserverContext<MasterCoprocessorEnvironment> ctx, TableName tableName) throws IOException { |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("==> HBaseAtlasCoprocessor.postDeleteTable()"); |
| } |
| |
| try { |
| activatePluginClassLoader(); |
| implMasterObserver.postDeleteTable(ctx, tableName); |
| } finally { |
| deactivatePluginClassLoader(); |
| } |
| |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("<== HBaseAtlasCoprocessor.postDeleteTable()"); |
| } |
| } |
| |
| @Override |
| public void postCreateNamespace(ObserverContext<MasterCoprocessorEnvironment> ctx, NamespaceDescriptor ns) throws IOException { |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("==> HBaseAtlasCoprocessor.preCreateNamespace()"); |
| } |
| |
| try { |
| activatePluginClassLoader(); |
| implMasterObserver.postCreateNamespace(ctx, ns); |
| } finally { |
| deactivatePluginClassLoader(); |
| } |
| |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("<== HBaseAtlasCoprocessor.preCreateNamespace()"); |
| } |
| } |
| |
| @Override |
| public void postDeleteNamespace(ObserverContext<MasterCoprocessorEnvironment> ctx, String ns) throws IOException { |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("==> HBaseAtlasCoprocessor.preDeleteNamespace()"); |
| } |
| |
| try { |
| activatePluginClassLoader(); |
| implMasterObserver.postDeleteNamespace(ctx, ns); |
| } finally { |
| deactivatePluginClassLoader(); |
| } |
| |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("<== HBaseAtlasCoprocessor.preDeleteNamespace()"); |
| } |
| } |
| @Override |
| public void postModifyNamespace(ObserverContext<MasterCoprocessorEnvironment> ctx, NamespaceDescriptor ns) throws IOException { |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("==> HBaseAtlasCoprocessor.preModifyNamespace()"); |
| } |
| |
| try { |
| activatePluginClassLoader(); |
| implMasterObserver.preModifyNamespace(ctx, ns); |
| } finally { |
| deactivatePluginClassLoader(); |
| } |
| |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("<== HBaseAtlasCoprocessor.preModifyNamespace()"); |
| } |
| } |
| |
| @Override |
| public void postCloneSnapshot(ObserverContext<MasterCoprocessorEnvironment> observerContext, SnapshotDescription snapshot, TableDescriptor tableDescriptor) throws IOException { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("==> HBaseAtlasCoprocessor.postCloneSnapshot()"); |
| } |
| |
| try { |
| activatePluginClassLoader(); |
| implMasterObserver.postCloneSnapshot(observerContext,snapshot,tableDescriptor); |
| } finally { |
| deactivatePluginClassLoader(); |
| } |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("<== HBaseAtlasCoprocessor.postCloneSnapshot()"); |
| } |
| } |
| |
| @Override |
| public void postRestoreSnapshot(ObserverContext<MasterCoprocessorEnvironment> observerContext, SnapshotDescription snapshot, TableDescriptor tableDescriptor) throws IOException { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("==> HBaseAtlasCoprocessor.postRestoreSnapshot()"); |
| } |
| |
| try { |
| activatePluginClassLoader(); |
| implMasterObserver.postRestoreSnapshot(observerContext,snapshot,tableDescriptor); |
| } finally { |
| deactivatePluginClassLoader(); |
| } |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("<== HBaseAtlasCoprocessor.postRestoreSnapshot()"); |
| } |
| } |
| |
| private void activatePluginClassLoader() { |
| if(atlasPluginClassLoader != null) { |
| atlasPluginClassLoader.activate(); |
| } |
| } |
| |
| private void deactivatePluginClassLoader() { |
| if(atlasPluginClassLoader != null) { |
| atlasPluginClassLoader.deactivate(); |
| } |
| } |
| |
| } |