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/*
* ============LICENSE_START=======================================================
* Copyright (C) 2019 Nordix Foundation.
* ================================================================================
* 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.dmaap.datarouter.provisioning.utils;
import static java.lang.System.exit;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import java.io.File;
import java.io.FileReader;
import java.io.LineNumberReader;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.HashSet;
import java.util.Properties;
import java.util.Set;
import javax.sql.DataSource;
import org.apache.commons.dbcp2.BasicDataSource;
import org.onap.dmaap.datarouter.provisioning.ProvRunner;
public class ProvDbUtils {
private static EELFLogger intLogger = EELFManager.getInstance().getLogger("InternalLog");
private static DataSource dataSource;
private static ProvDbUtils provDbUtils;
private ProvDbUtils() {
}
public static ProvDbUtils getInstance() {
if (provDbUtils == null) {
try {
provDbUtils = new ProvDbUtils();
dataSource = setupDataSource(ProvRunner.getProvProperties());
} catch (ClassNotFoundException e) {
intLogger.error("PROV9010: Failed to load DB Driver Class: " + e.getMessage(), e);
exit(1);
}
}
return provDbUtils;
}
private static DataSource setupDataSource(Properties props) throws ClassNotFoundException {
intLogger.info("PROV9009: Setting up DB dataSource");
Class.forName((String) props.get("org.onap.dmaap.datarouter.db.driver"));
BasicDataSource dataSource = new BasicDataSource();
dataSource.setUrl((String) props.get("org.onap.dmaap.datarouter.db.url"));
dataSource.setUsername(getValue(props, "org.onap.dmaap.datarouter.db.login"));
dataSource.setPassword(getValue(props, "org.onap.dmaap.datarouter.db.password"));
dataSource.setMinIdle(5);
dataSource.setMaxIdle(15);
dataSource.setMaxOpenPreparedStatements(100);
return dataSource;
}
private static String getValue(final Properties props, final String value) {
String prop = (String) props.get(value);
if (prop != null && prop.matches("[$][{].*[}]$")) {
return System.getenv(prop.substring(2, prop.length() - 1));
}
return prop;
}
public Connection getConnection() throws SQLException {
return dataSource.getConnection();
}
public boolean initProvDB() {
final String[] expectedTables = {
"FEEDS", "FEED_ENDPOINT_ADDRS", "FEED_ENDPOINT_IDS", "PARAMETERS",
"SUBSCRIPTIONS", "LOG_RECORDS", "INGRESS_ROUTES", "EGRESS_ROUTES",
"NETWORK_ROUTES", "NODESETS", "NODES", "GROUPS"
};
try (Connection connection = getConnection()) {
Set<String> actualTables = getTableSet(connection);
boolean initialize = false;
for (String tableName : expectedTables) {
initialize |= !actualTables.contains(tableName);
}
if (initialize) {
intLogger.info("PROV9001: First time startup; The database is being initialized.");
runInitScript(connection, 1);
}
} catch (SQLException e) {
intLogger.error("PROV9000: The database credentials are not working: " + e.getMessage(), e);
return false;
}
return true;
}
/**
* Get a set of all table names in the DB.
*
* @param connection a DB connection
* @return the set of table names
*/
private Set<String> getTableSet(Connection connection) {
Set<String> tables = new HashSet<>();
try {
DatabaseMetaData md = connection.getMetaData();
ResultSet rs = md.getTables(null, null, "%", null);
if (rs != null) {
while (rs.next()) {
tables.add(rs.getString("TABLE_NAME").toUpperCase());
}
rs.close();
}
} catch (SQLException e) {
intLogger.error("PROV9010: Failed to get TABLE data from DB: " + e.getMessage(), e);
}
return tables;
}
/**
* Initialize the tables by running the initialization scripts located in the directory specified by the property
* <i>org.onap.dmaap.datarouter.provserver.dbscripts</i>. Scripts have names of the form
* sql_init_NN.sql
*
* @param connection a DB connection
* @param scriptId the number of the sql_init_NN.sql script to run
*/
private void runInitScript(Connection connection, int scriptId) {
String scriptDir = ProvRunner.getProvProperties().getProperty("org.onap.dmaap.datarouter.provserver.dbscripts");
String scriptFile = String.format("%s/sql_init_%02d.sql", scriptDir, scriptId);
if (!(new File(scriptFile)).exists()) {
intLogger.error("PROV9005 Failed to load sql script from : " + scriptFile);
exit(1);
}
try (LineNumberReader lineReader = new LineNumberReader(new FileReader(scriptFile));
Statement statement = connection.createStatement()) {
StringBuilder strBuilder = new StringBuilder();
String line;
while ((line = lineReader.readLine()) != null) {
if (!line.startsWith("--")) {
line = line.trim();
strBuilder.append(line);
executeDdlStatement(statement, strBuilder, line);
}
}
strBuilder.setLength(0);
} catch (Exception e) {
intLogger.error("PROV9002 Error when initializing table: " + e.getMessage(), e);
exit(1);
}
}
private void executeDdlStatement(Statement statement, StringBuilder strBuilder, String line) throws SQLException {
if (line.endsWith(";")) {
String sql = strBuilder.toString();
strBuilder.setLength(0);
statement.execute(sql);
}
}
}
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