1 package org.openecomp.config.impl;
3 import org.apache.commons.configuration2.ImmutableConfiguration;
4 import org.apache.commons.dbcp2.BasicDataSource;
5 import org.openecomp.config.ConfigurationUtils;
6 import org.openecomp.config.Constants;
8 import java.sql.Driver;
9 import java.util.Arrays;
10 import java.util.Collections;
11 import java.util.HashSet;
12 import java.util.ServiceLoader;
16 * The type Configuration data source.
18 public final class ConfigurationDataSource {
20 private static BasicDataSource configDBDatasource = null;
21 private static Set<String> validCallers = Collections.unmodifiableSet(new HashSet<>(
22 Arrays.asList(ConfigurationUtils.class.getName(), CliConfigurationImpl.class.getName())));
26 configDBDatasource = initDataSource();
27 } catch (Exception exception) {
28 System.err.println("Datasource initialization error. Configuration management will be using in-memory persistence.");
33 * Lookup basic data source.
35 * @return the basic data source
36 * @throws Exception the exception
38 public static BasicDataSource lookup() throws Exception {
39 if (validCallers.contains(Thread.currentThread().getStackTrace()[2].getClassName())) {
40 return configDBDatasource;
47 * Init data source basic data source.
49 * @return the basic data source
50 * @throws Exception the exception
52 public static BasicDataSource initDataSource() throws Exception {
53 ImmutableConfiguration dbConfig = ConfigurationRepository.lookup()
54 .getConfigurationFor(Constants.DEFAULT_TENANT, Constants.DB_NAMESPACE);
55 BasicDataSource datasource = new BasicDataSource();
56 String driverClassName = dbConfig.getString("driverClassName");
57 String jdbcUrl = dbConfig.getString("jdbcURL");
58 if (!isDriverSuitable(driverClassName, jdbcUrl)) {
59 driverClassName = getDriverFor(jdbcUrl);
61 datasource.setDriverClassName(driverClassName);
62 datasource.setUrl(jdbcUrl);
63 String dbuser = dbConfig.getString("dbuser");
64 String dbpassword = dbConfig.getString("dbpassword");
65 if (dbuser != null && dbuser.trim().length() > 0) {
66 datasource.setUsername(dbuser);
68 if (dbpassword != null && dbpassword.trim().length() > 0) {
69 datasource.setPassword(dbpassword);
74 private static boolean isDriverSuitable(String driverClassName, String url) {
75 if (driverClassName == null || driverClassName.trim().length() == 0) {
79 Driver driver = Driver.class.cast(Class.forName(driverClassName).newInstance());
80 return driver.acceptsURL(url);
81 } catch (Exception exception) {
82 exception.printStackTrace();
87 private static String getDriverFor(String url) throws Exception {
88 ServiceLoader<Driver> loader = ServiceLoader.load(Driver.class);
89 for (Driver driver : loader) {
90 if (driver.acceptsURL(url)) {
91 return driver.getClass().getName();
94 throw new RuntimeException("No Suitable driver found for " + url);