src/main/java/org/onap/dmaap/dbcapi/database/LoadSchema.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * org.onap.dmaap
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.onap.dmaap.dbcapi.database;
  22
  23 import java.io.*;
  24 import java.sql.*;
  25
  26 import org.apache.log4j.Logger;
  27
  28 import com.att.eelf.configuration.EELFLogger;
  29 import com.att.eelf.configuration.EELFManager;
  30
  31 import org.onap.dmaap.dbcapi.logging.DmaapbcLogMessageEnum;
  32
  33 public class LoadSchema {
  34         private static final EELFLogger logger = EELFManager.getInstance().getLogger(LoadSchema.class);
  35         private static final EELFLogger appLogger = EELFManager.getInstance().getApplicationLogger();
  36         private static final EELFLogger auditLogger = EELFManager.getInstance().getAuditLogger();
  37         private static final EELFLogger debugLogger = EELFManager.getInstance().getDebugLogger();
  38         private static final EELFLogger errorLogger = EELFManager.getInstance().getErrorLogger();
  39         private static final EELFLogger metricsLogger = EELFManager.getInstance().getMetricsLogger();
  40
  41         static int getVer(Statement s) throws SQLException {
  42                 ResultSet rs = null;
  43                 try {
  44                         rs = s.executeQuery("SELECT version FROM dmaapbc_sch_ver");
  45                         rs.next();
  46                         return(rs.getInt(1));
  47                 } finally {
  48                         if (rs != null) {
  49                                 rs.close();
  50                         }
  51                 }
  52         }
  53         static void upgrade() throws SQLException {
  54                 ConnectionFactory cf = ConnectionFactory.getDefaultInstance();
  55                 Connection c = null;
  56                 Statement stmt = null;
  57                 InputStream is = null;
  58                 try {
  59                         c = cf.get(true);
  60                         stmt = c.createStatement();
  61                         int newver = -1;
  62                         try {
  63                                 newver = getVer(stmt);
  64                         } catch (Exception e) {}
  65                         logger.info("Database schema currently at version " + newver++);
  66
  67                         while ((is = LoadSchema.class.getClassLoader().getResourceAsStream("schema_" + newver + ".sql")) != null) {
  68                                 logger.info("Upgrading database schema to version " + newver);
  69                                 BufferedReader br = new BufferedReader(new InputStreamReader(is));
  70                                 String s;
  71                                 String sofar;
  72                                 if ( newver > 0 ) {
  73                                         sofar = null;
  74                                 } else {
  75                                         sofar = String.format( "SET search_path to %s;", cf.getSchema());
  76                                 }
  77                                 while ((s = br.readLine()) != null) {
  78                                         logger.info("SCHEMA: " + s);
  79                                         s = s.trim();
  80                                         if (s.length() == 0 || s.startsWith("--")) {
  81                                                 continue;
  82                                         }
  83                                         if (sofar == null) {
  84                                                 sofar = s;
  85                                         } else {
  86                                                 sofar = sofar + " " + s;
  87                                         }
  88                                         if (s.endsWith(";")) {
  89                                                 sofar = sofar.substring(0, sofar.length() - 1);
  90                                                 boolean ignore = false;
  91                                                 if (sofar.startsWith("@")) {
  92                                                         ignore = true;
  93                                                         sofar = sofar.substring(1).trim();
  94                                                 }
  95                                                 try {
  96                                                         stmt.execute(sofar);
  97                                                 } catch (SQLException sqle) {
  98                                                         if (!ignore) {
  99                                                                 throw sqle;
 100                                                         }
 101                                                 }
 102                                                 sofar = null;
 103                                         }
 104                                 }
 105                                 is.close();
 106                                 is = null;
 107                                 if (getVer(stmt) != newver) {
 108                                         throw new SQLException("Schema version not properly updated to " + newver + " by upgrade script");
 109                                 }
 110                                 logger.info("Upgrade to database schema version " + newver + " successful");
 111                                 newver++;
 112                         }
 113                 } catch (IOException ioe) {
 114                         throw new SQLException(ioe);
 115                 } finally {
 116                         if (stmt != null) { try { stmt.close(); } catch (Exception e) {}}
 117                         if (c != null) { try { c.close(); } catch (Exception e) {}}
 118                 }
 119         }
 120         public static void main(String[] args) throws Exception {
 121                 upgrade();
 122         }
 123 }