| /** |
| * 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.repository.graph; |
| |
| import org.apache.atlas.setup.SetupException; |
| import org.apache.atlas.setup.SetupStep; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.springframework.stereotype.Component; |
| |
| /** |
| * A {@link SetupStep} that initializes the Graph backend for Atlas. |
| * |
| * This class will initialize the specific backend implementation specified in |
| * the Atlas configuration for the key atlas.graph.storage.backend. |
| */ |
| @Component |
| public class GraphSchemaInitializer implements SetupStep { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(GraphSchemaInitializer.class); |
| |
| @Override |
| public void run() throws SetupException { |
| LOG.info("Initializing graph schema backend."); |
| try { |
| // The implementation of this method internally creates the schema. |
| AtlasGraphProvider.getGraphInstance(); |
| LOG.info("Completed initializing graph schema backend."); |
| } catch (Exception e) { |
| LOG.error("Could not initialize graph schema backend due to exception, {}", e.getMessage(), e); |
| throw new SetupException("Could not initialize graph schema due to exception", e); |
| } |
| } |
| } |