001package ca.uhn.fhir.jpa.migrate.taskdef;
002
003/*-
004 * #%L
005 * HAPI FHIR Server - SQL Migration
006 * %%
007 * Copyright (C) 2014 - 2022 Smile CDR, Inc.
008 * %%
009 * Licensed under the Apache License, Version 2.0 (the "License");
010 * you may not use this file except in compliance with the License.
011 * You may obtain a copy of the License at
012 *
013 *      http://www.apache.org/licenses/LICENSE-2.0
014 *
015 * Unless required by applicable law or agreed to in writing, software
016 * distributed under the License is distributed on an "AS IS" BASIS,
017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
018 * See the License for the specific language governing permissions and
019 * limitations under the License.
020 * #L%
021 */
022
023import ca.uhn.fhir.i18n.Msg;
024import ca.uhn.fhir.jpa.migrate.JdbcUtils;
025import org.apache.commons.lang3.Validate;
026import org.apache.commons.lang3.builder.EqualsBuilder;
027import org.apache.commons.lang3.builder.HashCodeBuilder;
028import org.slf4j.Logger;
029import org.slf4j.LoggerFactory;
030
031import java.sql.SQLException;
032import java.util.Set;
033import java.util.stream.Collectors;
034
035import static org.apache.commons.lang3.StringUtils.isNotBlank;
036
037public class AddIdGeneratorTask extends BaseTask {
038
039        private static final Logger ourLog = LoggerFactory.getLogger(AddIdGeneratorTask.class);
040        private final String myGeneratorName;
041
042        public AddIdGeneratorTask(String theProductVersion, String theSchemaVersion, String theGeneratorName) {
043                super(theProductVersion, theSchemaVersion);
044                myGeneratorName = theGeneratorName;
045        }
046
047        @Override
048        public void validate() {
049                Validate.notBlank(myGeneratorName);
050                setDescription("Add id generator " + myGeneratorName);
051        }
052
053        @Override
054        public void doExecute() throws SQLException {
055                Set<String> tableNames = JdbcUtils.getTableNames(getConnectionProperties());
056                String sql = null;
057
058                switch (getDriverType()) {
059                        case MARIADB_10_1:
060                        case MYSQL_5_7:
061                                // These require a separate table
062                                if (!tableNames.contains(myGeneratorName)) {
063
064                                        String creationSql = "create table " + myGeneratorName + " ( next_val bigint ) engine=InnoDB";
065                                        executeSql(myGeneratorName, creationSql);
066
067                                        String initSql = "insert into " + myGeneratorName + " values ( 1 )";
068                                        executeSql(myGeneratorName, initSql);
069
070                                }
071                                break;
072                        case DERBY_EMBEDDED:
073                        case H2_EMBEDDED:
074                                sql = "create sequence " + myGeneratorName + " start with 1 increment by 50";
075                                break;
076                        case POSTGRES_9_4:
077                                sql = "create sequence " + myGeneratorName + " start 1 increment 50";
078                                break;
079                        case ORACLE_12C:
080                                sql = "create sequence " + myGeneratorName + " start with 1 increment by 50";
081                                break;
082                        case MSSQL_2012:
083                                sql = "create sequence " + myGeneratorName + " start with 1 increment by 50";
084                                break;
085                        default:
086                                throw new IllegalStateException(Msg.code(63));
087                }
088
089                if (isNotBlank(sql)) {
090                        Set<String> sequenceNames =
091                                JdbcUtils.getSequenceNames(getConnectionProperties())
092                                        .stream()
093                                        .map(String::toLowerCase)
094                                        .collect(Collectors.toSet());
095                        ourLog.debug("Currently have sequences: {}", sequenceNames);
096                        if (sequenceNames.contains(myGeneratorName.toLowerCase())) {
097                                logInfo(ourLog, "Sequence {} already exists - No action performed", myGeneratorName);
098                                return;
099                        }
100
101                        executeSql(myGeneratorName, sql);
102                }
103
104        }
105
106        @Override
107        protected void generateEquals(EqualsBuilder theBuilder, BaseTask theOtherObject) {
108                AddIdGeneratorTask otherObject = (AddIdGeneratorTask) theOtherObject;
109                theBuilder.append(myGeneratorName, otherObject.myGeneratorName);
110        }
111
112        @Override
113        protected void generateHashCode(HashCodeBuilder theBuilder) {
114                theBuilder.append(myGeneratorName);
115        }
116}