Refactor code to support no AAF requests

[dmaap/dbcapi.git] / src / main / java / org / onap / dmaap / dbcapi / database / LoadSchema.java

diff --git a/src/main/java/org/onap/dmaap/dbcapi/database/LoadSchema.java b/src/main/java/org/onap/dmaap/dbcapi/database/LoadSchema.java
new file mode 100644 (file)
index 0000000..6e64c4a
--- /dev/null
+++ b/src/main/java/org/onap/dmaap/dbcapi/database/LoadSchema.java
@@ -0,0 +1,117 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * org.onap.dmaap
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.dmaap.dbcapi.database;
+
+import java.io.*;
+import java.sql.*;
+
+import org.apache.log4j.Logger;
+
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+
+import org.onap.dmaap.dbcapi.logging.DmaapbcLogMessageEnum;
+
+public class LoadSchema        {
+       private static final EELFLogger logger = EELFManager.getInstance().getLogger(LoadSchema.class);
+       private static final EELFLogger appLogger = EELFManager.getInstance().getApplicationLogger();
+       private static final EELFLogger auditLogger = EELFManager.getInstance().getAuditLogger();
+       private static final EELFLogger debugLogger = EELFManager.getInstance().getDebugLogger();
+       private static final EELFLogger errorLogger = EELFManager.getInstance().getErrorLogger();
+       private static final EELFLogger metricsLogger = EELFManager.getInstance().getMetricsLogger();
+       
+       static int getVer(Statement s) throws SQLException {
+               ResultSet rs = null;
+               try {
+                       rs = s.executeQuery("SELECT version FROM dmaapbc_sch_ver");
+                       rs.next();
+                       return(rs.getInt(1));
+               } finally {
+                       if (rs != null) {
+                               rs.close();
+                       }
+               }
+       }
+       static void upgrade() throws SQLException {
+               ConnectionFactory cf = ConnectionFactory.getDefaultInstance();
+               Connection c = null;
+               Statement stmt = null;
+               InputStream is = null;
+               try {
+                       c = cf.get(true);
+                       stmt = c.createStatement();
+                       int newver = -1;
+                       try {
+                               newver = getVer(stmt);
+                       } catch (Exception e) {}
+                       logger.info("Database schema currently at version " + newver++);
+                       while ((is = LoadSchema.class.getClassLoader().getResourceAsStream("schema_" + newver + ".sql")) != null) {
+                               logger.info("Upgrading database schema to version " + newver);
+                               BufferedReader br = new BufferedReader(new InputStreamReader(is));
+                               String s;
+                               String sofar = null;
+                               while ((s = br.readLine()) != null) {
+                                       logger.info("SCHEMA: " + s);
+                                       s = s.trim();
+                                       if (s.length() == 0 || s.startsWith("--")) {
+                                               continue;
+                                       }
+                                       if (sofar == null) {
+                                               sofar = s;
+                                       } else {
+                                               sofar = sofar + " " + s;
+                                       }
+                                       if (s.endsWith(";")) {
+                                               sofar = sofar.substring(0, sofar.length() - 1);
+                                               boolean ignore = false;
+                                               if (sofar.startsWith("@")) {
+                                                       ignore = true;
+                                                       sofar = sofar.substring(1).trim();
+                                               }
+                                               try {
+                                                       stmt.execute(sofar);
+                                               } catch (SQLException sqle) {
+                                                       if (!ignore) {
+                                                               throw sqle;
+                                                       }
+                                               }
+                                               sofar = null;
+                                       }
+                               }
+                               is.close();
+                               is = null;
+                               if (getVer(stmt) != newver) {
+                                       throw new SQLException("Schema version not properly updated to " + newver + " by upgrade script");
+                               }
+                               logger.info("Upgrade to database schema version " + newver + " successful");
+                               newver++;
+                       }
+               } catch (IOException ioe) {
+                       throw new SQLException(ioe);
+               } finally {
+                       if (stmt != null) { try { stmt.close(); } catch (Exception e) {}}
+                       if (c != null) { try { c.close(); } catch (Exception e) {}}
+               }
+       }
+       public static void main(String[] args) throws Exception {
+               upgrade();
+       }
+}