/**
*
* 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.airavata.sharing.registry.util;
import org.apache.airavata.common.exception.ApplicationSettingsException;
import org.apache.airavata.common.utils.ServerSettings;
import org.apache.airavata.sharing.registry.db.utils.JPAUtils;
import org.apache.derby.drda.NetworkServerControl;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.net.URI;
import java.sql.*;
import java.util.StringTokenizer;
public class Initialize {
private static final Logger logger = LoggerFactory.getLogger(Initialize.class);
public static final String DERBY_SERVER_MODE_SYS_PROPERTY = "derby.drda.startNetworkServer";
public String scriptName ;
private NetworkServerControl server;
private static final String delimiter = ";";
public static final String PERSISTANT_DATA = "Configuration";
public Initialize(String scriptName) {
this.scriptName = scriptName;
}
public static boolean checkStringBufferEndsWith(StringBuffer buffer, String suffix) {
if (suffix.length() > buffer.length()) {
return false;
}
// this loop is done on purpose to avoid memory allocation performance
// problems on various JDKs
// StringBuffer.lastIndexOf() was introduced in jdk 1.4 and
// implementation is ok though does allocation/copying
// StringBuffer.toString().endsWith() does massive memory
// allocation/copying on JDK 1.5
// See http://issues.apache.org/bugzilla/show_bug.cgi?id=37169
int endIndex = suffix.length() - 1;
int bufferIndex = buffer.length() - 1;
while (endIndex >= 0) {
if (buffer.charAt(bufferIndex) != suffix.charAt(endIndex)) {
return false;
}
bufferIndex--;
endIndex--;
}
return true;
}
private static boolean isServerStarted(NetworkServerControl server, int ntries)
{
for (int i = 1; i <= ntries; i ++)
{
try {
Thread.sleep(500);
server.ping();
return true;
}
catch (Exception e) {
if (i == ntries)
return false;
}
}
return false;
}
public void initializeDB() throws SQLException{
String jdbcUrl = null;
String jdbcUser = null;
String jdbcPassword = null;
try{
jdbcUrl = ServerSettings.getSetting("sharingcatalog.jdbc.url");
jdbcUser = ServerSettings.getSetting("sharingcatalog.jdbc.user");
jdbcPassword = ServerSettings.getSetting("sharingcatalog.jdbc.password");
jdbcUrl = jdbcUrl + "?" + "user=" + jdbcUser + "&" + "password=" + jdbcPassword;
} catch (ApplicationSettingsException e) {
logger.error("Unable to read properties", e);
}
startDerbyInServerMode();
if(!isServerStarted(server, 20)){
throw new RuntimeException("Derby server cound not started within five seconds...");
}
Connection conn = null;
try {
Class.forName(JPAUtils.readServerProperties(JPAUtils.SHARING_REG_JDBC_DRIVER)).newInstance();
conn = DriverManager.getConnection(jdbcUrl, jdbcUser, jdbcPassword);
if (!isDatabaseStructureCreated(PERSISTANT_DATA, conn)) {
executeSQLScript(conn);
logger.info("New Database created for Registry");
} else {
logger.debug("Database already created for Registry!");
}
} catch (Exception e) {
logger.error(e.getMessage(), e);
throw new RuntimeException("Database failure", e);
} finally {
try {
if (conn != null){
if (!conn.getAutoCommit()) {
conn.commit();
}
conn.close();
}
} catch (SQLException e) {
logger.error(e.getMessage(), e);
}
}
}
public static boolean isDatabaseStructureCreated(String tableName, Connection conn) {
try {
System.out.println("Running a query to test the database tables existence.");
// check whether the tables are already created with a query
Statement statement = null;
try {
statement = conn.createStatement();
ResultSet rs = statement.executeQuery("select * from " + tableName);
if (rs != null) {
rs.close();
}
} finally {
try {
if (statement != null) {
statement.close();
}
} catch (SQLException e) {
return false;
}
}
} catch (SQLException e) {
return false;
}
return true;
}
private void executeSQLScript(Connection conn) throws Exception {
StringBuffer sql = new StringBuffer();
BufferedReader reader = null;
try{
InputStream inputStream = this.getClass().getClassLoader().getResourceAsStream(scriptName);
reader = new BufferedReader(new InputStreamReader(inputStream));
String line;
while ((line = reader.readLine()) != null) {
line = line.trim();
if (line.startsWith("//")) {
continue;
}
if (line.startsWith("--")) {
continue;
}
StringTokenizer st = new StringTokenizer(line);
if (st.hasMoreTokens()) {
String token = st.nextToken();
if ("REM".equalsIgnoreCase(token)) {
continue;
}
}
sql.append(" ").append(line);
// SQL defines "--" as a comment to EOL
// and in Oracle it may contain a hint
// so we cannot just remove it, instead we must end it
if (line.indexOf("--") >= 0) {
sql.append("\n");
}
if ((checkStringBufferEndsWith(sql, delimiter))) {
executeSQL(sql.substring(0, sql.length() - delimiter.length()), conn);
sql.replace(0, sql.length(), "");
}
}
// Catch any statements not followed by ;
if (sql.length() > 0) {
executeSQL(sql.toString(), conn);
}
}catch (IOException e){
logger.error("Error occurred while executing SQL script for creating Airavata database", e);
throw new Exception("Error occurred while executing SQL script for creating Airavata database", e);
}finally {
if (reader != null) {
reader.close();
}
}
}
private static void executeSQL(String sql, Connection conn) throws Exception {
// Check and ignore empty statements
if ("".equals(sql.trim())) {
return;
}
Statement statement = null;
try {
logger.debug("SQL : " + sql);
boolean ret;
int updateCount = 0, updateCountTotal = 0;
statement = conn.createStatement();
ret = statement.execute(sql);
updateCount = statement.getUpdateCount();
do {
if (!ret) {
if (updateCount != -1) {
updateCountTotal += updateCount;
}
}
ret = statement.getMoreResults();
if (ret) {
updateCount = statement.getUpdateCount();
}
} while (ret);
logger.debug(sql + " : " + updateCountTotal + " rows affected");
SQLWarning warning = conn.getWarnings();
while (warning != null) {
logger.warn(warning + " sql warning");
warning = warning.getNextWarning();
}
conn.clearWarnings();
} catch (SQLException e) {
if (e.getSQLState().equals("X0Y32")) {
// eliminating the table already exception for the derby
// database
logger.info("Table Already Exists", e);
} else {
throw new Exception("Error occurred while executing : " + sql, e);
}
} finally {
if (statement != null) {
try {
statement.close();
} catch (SQLException e) {
logger.error("Error occurred while closing result set.", e);
}
}
}
}
private void startDerbyInServerMode() {
try {
System.setProperty(DERBY_SERVER_MODE_SYS_PROPERTY, "true");
String jdbcURL = JPAUtils.readServerProperties(JPAUtils.SHARING_REG_JDBC_URL);
String cleanURI = jdbcURL.substring(5);
URI uri = URI.create(cleanURI);
server = new NetworkServerControl(InetAddress.getByName(uri.getHost()),
20000,
JPAUtils.readServerProperties(JPAUtils.SHARING_REG_JDBC_USER), JPAUtils.readServerProperties(JPAUtils.SHARING_REG_JDBC_USER));
java.io.PrintWriter consoleWriter = new java.io.PrintWriter(System.out, true);
server.start(consoleWriter);
} catch (IOException e) {
logger.error("Unable to start Apache derby in the server mode! Check whether " +
"specified port is available");
} catch (Exception e) {
logger.error("Unable to start Apache derby in the server mode! Check whether " +
"specified port is available");
}
}
public void stopDerbyServer() throws SQLException{
try {
server.shutdown();
} catch (Exception e) {
logger.error(e.getMessage(), e);
throw new SQLException("Error while stopping derby server", e);
}
}
}