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VoltDB client interface libraries
/* This file is part of VoltDB.
* Copyright (C) 2008-2017 VoltDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with VoltDB. If not, see getPropsFromURL(String url) {
Map results = new HashMap();
if (url.indexOf("?") > 0) {
String propstring = url.substring(url.indexOf("?") + 1);
String[] props = propstring.split("&");
for (String prop : props) {
if (prop.indexOf("=") > 0) {
String[] comps = prop.split("=");
results.put(comps[0], comps[1]);
}
}
}
return results;
}
private static final int MAJOR_VERSION = 1;
private static final int MINOR_VERSION = 0;
static
{
try
{
DriverManager.registerDriver(new Driver());
}
catch (Exception e)
{}
}
public Driver() throws SQLException
{
// Required for Class.forName().newInstance()
}
@Override
public Connection connect(String url, Properties props) throws SQLException
{
if (acceptsURL(url))
{
try
{
// Properties favored order:
// 1) property file specified by env variable
// 2) property file specified by system property
// 3) property file with default name in same path as driver jar
// 4) Properties specified in the URL
// 5) Properties specified to getConnection() arg
//
Properties fileprops = tryToFindPropsFile();
// Copy the provided properties so we don't muck with
// the object the caller gave us.
Properties info = (Properties) props.clone();
String prefix = URL_PREFIX + "//";
if (!url.startsWith(prefix)) {
throw SQLError.get(SQLError.ILLEGAL_ARGUMENT);
}
// get the server strings
String[] servers = Driver.getServersFromURL(url);
// get the props from the URL
Map urlprops = Driver.getPropsFromURL(url);
for (Entry e : urlprops.entrySet()) {
// Favor the URL over the provided props
info.setProperty(e.getKey(), e.getValue());
}
// Favor the file-specified properties over the other props
for (Enumeration e = fileprops.propertyNames(); e.hasMoreElements();)
{
String key = (String) e.nextElement();
info.setProperty(key, fileprops.getProperty(key));
}
String user = "";
String password = "";
boolean heavyweight = false;
int maxoutstandingtxns = 0;
boolean reconnectOnConnectionLoss = false;
boolean enableSSL = false;
String truststorePath = null;
String truststorePassword = null;
for (Enumeration e = info.propertyNames(); e.hasMoreElements();)
{
String key = (String) e.nextElement();
String value = info.getProperty(key);
if (key.toLowerCase().equals("user"))
user = value;
else if (key.toLowerCase().equals("password"))
password = value;
else if (key.toLowerCase().equals("heavyweight"))
heavyweight = (value.toLowerCase().equals("true") || value.toLowerCase().equals("yes") ||
value.toLowerCase().equals("1"));
else if (key.toLowerCase().equals("maxoutstandingtxns"))
maxoutstandingtxns = Integer.parseInt(value);
else if ("autoreconnect".equals(key)) {
reconnectOnConnectionLoss = ("true".equalsIgnoreCase(value) || "yes".equalsIgnoreCase(value) || "1".equals(value));
}
else if (key.toLowerCase().equals(SSL_PROP)) {
enableSSL = value.toLowerCase().equals("true");
}
else if (key.toLowerCase().equals(TRUSTSTORE_CONFIG_PROP)) {
if ((value != null) && value.trim().length() > 0) {
truststorePath = value.trim();
}
}
else if (key.toLowerCase().equals(TRUSTSTORE_PASSWORD_PROP)) {
truststorePassword = value;
}
// else - unknown; ignore
}
SSLConfiguration.SslConfig sslConfig = null;
if (enableSSL) {
sslConfig = new SSLConfiguration.SslConfig(null, null, truststorePath, truststorePassword);
}
// Return JDBC connection wrapper for the client
return new JDBC4Connection(JDBC4ClientConnectionPool.get(servers, user, password,
heavyweight, maxoutstandingtxns, reconnectOnConnectionLoss, sslConfig),
info);
} catch (Exception x) {
throw SQLError.get(x, SQLError.CONNECTION_UNSUCCESSFUL);
}
}
return null;
}
@Override
public boolean acceptsURL(String url) throws SQLException
{
return Pattern.compile("^jdbc:voltdb://.+", Pattern.CASE_INSENSITIVE).matcher(url).matches();
}
@Override
public int getMajorVersion()
{
return MAJOR_VERSION;
}
@Override
public int getMinorVersion()
{
return MINOR_VERSION;
}
@Override
public DriverPropertyInfo[] getPropertyInfo(String url, Properties loginProps) throws SQLException
{
return new DriverPropertyInfo[0];
}
@Override
public boolean jdbcCompliant()
{
return false;
}
@Override
public Logger getParentLogger() throws SQLFeatureNotSupportedException {
throw new SQLFeatureNotSupportedException();
}
private Properties tryToFindPropsFile() {
Properties fileprops = new Properties();
String filename = null;
// Check the env first
filename = System.getenv(Driver.JDBC_PROP_FILE_ENV);
if (filename == null) {
filename = System.getProperty(Driver.JDBC_PROP_FILE_PROP);
}
if (filename == null) {
// see if we can find a file in the default location
URL pathToJar = this.getClass().getProtectionDomain()
.getCodeSource().getLocation();
String tmp = null;
try {
tmp = new File(pathToJar.toURI()).getParent() + File.separator + DEFAULT_PROP_FILENAME;
} catch (Exception e) {
tmp = null;
}
filename = tmp;
}
if (filename != null) {
File propfile = new File(filename);
if (propfile.exists() && propfile.isFile()) {
FileInputStream in = null;
try {
in = new FileInputStream(propfile);
fileprops.load(in);
}
catch (FileNotFoundException fnfe) {}
catch (IOException ioe) {}
finally {
if (in != null) {
try {
in.close();
} catch (IOException e) {}
}
}
}
}
return fileprops;
}
}