001/*-
002 * #%L
003 * HAPI FHIR Server - SQL Migration
004 * %%
005 * Copyright (C) 2014 - 2023 Smile CDR, Inc.
006 * %%
007 * Licensed under the Apache License, Version 2.0 (the "License");
008 * you may not use this file except in compliance with the License.
009 * You may obtain a copy of the License at
010 *
011 *      http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing, software
014 * distributed under the License is distributed on an "AS IS" BASIS,
015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016 * See the License for the specific language governing permissions and
017 * limitations under the License.
018 * #L%
019 */
020package ca.uhn.fhir.jpa.migrate.taskdef;
021
022import ca.uhn.fhir.i18n.Msg;
023import ca.uhn.fhir.jpa.migrate.JdbcUtils;
024import org.apache.commons.lang3.Validate;
025import org.apache.commons.lang3.builder.EqualsBuilder;
026import org.apache.commons.lang3.builder.HashCodeBuilder;
027import org.slf4j.Logger;
028import org.slf4j.LoggerFactory;
029
030import java.sql.SQLException;
031import java.util.Set;
032import java.util.stream.Collectors;
033
034import static org.apache.commons.lang3.StringUtils.isNotBlank;
035
036public class AddIdGeneratorTask extends BaseTask {
037
038        private static final Logger ourLog = LoggerFactory.getLogger(AddIdGeneratorTask.class);
039        private final String myGeneratorName;
040
041        public AddIdGeneratorTask(String theProductVersion, String theSchemaVersion, String theGeneratorName) {
042                super(theProductVersion, theSchemaVersion);
043                myGeneratorName = theGeneratorName;
044        }
045
046        @Override
047        public void validate() {
048                Validate.notBlank(myGeneratorName);
049                setDescription("Add id generator " + myGeneratorName);
050        }
051
052        @Override
053        public void doExecute() throws SQLException {
054                Set<String> tableNames = JdbcUtils.getTableNames(getConnectionProperties());
055                String sql = null;
056
057                switch (getDriverType()) {
058                        case MARIADB_10_1:
059                        case MYSQL_5_7:
060                                // These require a separate table
061                                if (!tableNames.contains(myGeneratorName)) {
062
063                                        String creationSql = "create table " + myGeneratorName + " ( next_val bigint ) engine=InnoDB";
064                                        executeSql(myGeneratorName, creationSql);
065
066                                        String initSql = "insert into " + myGeneratorName + " values ( 1 )";
067                                        executeSql(myGeneratorName, initSql);
068
069                                }
070                                break;
071                        case DERBY_EMBEDDED:
072                        case H2_EMBEDDED:
073                                sql = "create sequence " + myGeneratorName + " start with 1 increment by 50";
074                                break;
075                        case COCKROACHDB_21_1:
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}