org.mariadb.jdbc.MariaDbPoolDataSource Maven / Gradle / Ivy
/*
*
* MariaDB Client for Java
*
* Copyright (c) 2012-2014 Monty Program Ab.
* Copyright (c) 2015-2017 MariaDB Ab.
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This library 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 Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License along
* with this library; if not, write to Monty Program Ab [email protected].
*
*/
package org.mariadb.jdbc;
import org.mariadb.jdbc.internal.util.DefaultOptions;
import org.mariadb.jdbc.internal.util.Options;
import org.mariadb.jdbc.internal.util.constant.HaMode;
import org.mariadb.jdbc.internal.util.exceptions.ExceptionMapper;
import org.mariadb.jdbc.internal.util.pool.Pool;
import org.mariadb.jdbc.internal.util.pool.Pools;
import javax.sql.DataSource;
import javax.sql.XAConnection;
import javax.sql.XADataSource;
import java.io.Closeable;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.SQLFeatureNotSupportedException;
import java.util.Collections;
import java.util.List;
import java.util.Properties;
import java.util.logging.Logger;
public class MariaDbPoolDataSource implements DataSource, XADataSource, Closeable {
private UrlParser urlParser;
private Pool pool;
private String hostname;
private Integer port;
private Integer connectTimeout;
private String database;
private String url;
private String user;
private String password;
private String poolName;
private Integer maxPoolSize;
private Integer minPoolSize;
private Integer maxIdleTime;
private Boolean staticGlobal;
private Integer poolValidMinDelay;
/**
* Constructor.
*
* @param hostname hostname (ipv4, ipv6, dns name)
* @param port server port
* @param database database name
*/
public MariaDbPoolDataSource(String hostname, int port, String database) {
this.hostname = hostname;
this.port = port;
this.database = database;
}
public MariaDbPoolDataSource(String url) throws SQLException {
this.url = url;
}
/**
* Default constructor. hostname will be localhost, port 3306.
*/
public MariaDbPoolDataSource() {
}
/**
* Gets the name of the database.
*
* @return the name of the database for this data source
*/
public String getDatabaseName() {
if (database != null) return database;
return (urlParser != null && urlParser.getDatabase() != null) ? urlParser.getDatabase() : "";
}
/**
* Sets the database name.
*
* @param database the name of the database
* @throws SQLException if error in URL
*/
public void setDatabaseName(String database) throws SQLException {
checkNotInitialized();
this.database = database;
}
private void checkNotInitialized() throws SQLException {
if (pool != null) throw new SQLException("can not perform a configuration change once initialized");
}
/**
* Gets the username.
*
* @return the username to use when connecting to the database
*/
public String getUser() {
if (user != null) return user;
return urlParser != null ? urlParser.getUsername() : null;
}
/**
* Sets the username.
*
* @param user the username
* @throws SQLException if error in URL
*/
public void setUser(String user) throws SQLException {
checkNotInitialized();
this.user = user;
}
/**
* Sets the password.
*
* @param password the password
* @throws SQLException if error in URL
*/
public void setPassword(String password) throws SQLException {
checkNotInitialized();
this.password = password;
}
/**
* Returns the port number.
*
* @return the port number
*/
public int getPort() {
if (port != 0) return port;
return urlParser != null ? urlParser.getHostAddresses().get(0).port : 3306;
}
/**
* Sets the database port.
*
* @param port the port
* @throws SQLException if error in URL
*/
public void setPort(int port) throws SQLException {
checkNotInitialized();
this.port = port;
}
/**
* Returns the port number.
*
* @return the port number
*/
public int getPortNumber() {
return getPort();
}
/**
* Sets the port number.
*
* @param port the port
* @see #setPort
* @throws SQLException if error in URL
*/
public void setPortNumber(int port) throws SQLException {
checkNotInitialized();
if (port > 0) {
setPort(port);
}
}
/**
* Sets the connection string URL.
*
* @param url the connection string
* @throws SQLException if error in URL
*/
public void setUrl(String url) throws SQLException {
checkNotInitialized();
this.url = url;
}
/**
* Returns the name of the database server.
*
* @return the name of the database server
*/
public String getServerName() {
if (hostname != null) return hostname;
boolean hasHost = urlParser != null && this.urlParser.getHostAddresses().get(0).host != null;
return (hasHost) ? this.urlParser.getHostAddresses().get(0).host : "localhost";
}
/**
* Sets the server name.
*
* @param serverName the server name
* @throws SQLException if error in URL
**/
public void setServerName(String serverName) throws SQLException {
checkNotInitialized();
hostname = serverName;
}
/**
* Attempts to establish a connection with the data source that this DataSource object represents.
*
* @return a connection to the data source
* @throws SQLException if a database access error occurs
*/
public Connection getConnection() throws SQLException {
try {
if (pool == null) initialize();
return pool.getConnection();
} catch (SQLException e) {
throw ExceptionMapper.getException(e, null, null, false);
}
}
/**
* Attempts to establish a connection with the data source that this DataSource object represents.
*
* @param username the database user on whose behalf the connection is being made
* @param password the user's password
* @return a connection to the data source
* @throws SQLException if a database access error occurs
*/
public Connection getConnection(final String username, final String password) throws SQLException {
try {
if (pool == null) {
this.user = username;
this.password = password;
initialize();
return pool.getConnection();
}
if ((urlParser.getUsername() != null ? urlParser.getUsername().equals(username) : username == null)
&& (urlParser.getPassword() != null ? urlParser.getPassword().equals(password) : (password == null || password.isEmpty()))) {
return pool.getConnection();
}
//username / password are different from the one already used to initialize pool
//-> return a real new connection.
UrlParser urlParser = (UrlParser) this.urlParser.clone();
urlParser.setUsername(username);
urlParser.setPassword(password);
return MariaDbConnection.newConnection(urlParser, pool.getGlobalInfo());
} catch (SQLException e) {
throw ExceptionMapper.getException(e, null, null, false);
} catch (CloneNotSupportedException cloneException) {
throw new SQLException("Error in configuration");
}
}
/**
* Retrieves the log writer for this DataSource object.
*
* The log writer is a character output stream to which all logging and tracing messages for this data source
* will be printed. This includes messages printed by the methods of this object, messages printed by methods of
* other objects manufactured by this object, and so on. Messages printed to a data source specific log writer are
* not printed to the log writer associated with the java.sql.DriverManager class. When a
* DataSource object is created, the log writer is initially null; in other words, the default is for
* logging to be disabled.
*
* @return the log writer for this data source or null if logging is disabled
* @throws SQLException if a database access error occurs
* @see #setLogWriter
* @since 1.4
*/
public PrintWriter getLogWriter() throws SQLException {
return null;
}
/**
* Sets the log writer for this DataSource object to the given java.io.PrintWriter
* object.
*
* The log writer is a character output stream to which all logging and tracing messages for this data source
* will be printed. This includes messages printed by the methods of this object, messages printed by methods of
* other objects manufactured by this object, and so on. Messages printed to a data source- specific log writer are
* not printed to the log writer associated with the java.sql.DriverManager class. When a
* DataSource object is created the log writer is initially null; in other words, the default is for
* logging to be disabled.
*
* @param out the new log writer; to disable logging, set to null
* @throws SQLException if a database access error occurs
* @see #getLogWriter
* @since 1.4
*/
public void setLogWriter(final PrintWriter out) throws SQLException {
//not implemented
}
/**
* Gets the maximum time in seconds that this data source can wait while attempting to connect to a database. A
* value of zero means that the timeout is the default system timeout if there is one; otherwise, it means that
* there is no timeout. When a DataSource object is created, the login timeout is initially zero.
*
* @return the data source login time limit
* @throws SQLException if a database access error occurs.
* @see #setLoginTimeout
* @since 1.4
*/
public int getLoginTimeout() throws SQLException {
if (connectTimeout != null) return connectTimeout / 1000;
return (urlParser != null) ? urlParser.getOptions().connectTimeout / 1000 : 0;
}
/**
* Sets the maximum time in seconds that this data source will wait while attempting to connect to a database. A
* value of zero specifies that the timeout is the default system timeout if there is one; otherwise, it specifies
* that there is no timeout. When a DataSource object is created, the login timeout is initially zero.
*
* @param seconds the data source login time limit
* @throws SQLException if a database access error occurs.
* @see #getLoginTimeout
* @since 1.4
*/
@Override
public void setLoginTimeout(final int seconds) throws SQLException {
checkNotInitialized();
connectTimeout = seconds * 1000;
}
/**
* Returns an object that implements the given interface to allow access to non-standard methods, or standard
* methods not exposed by the proxy.
*
* If the receiver implements the interface then the result is the receiver or a proxy for the receiver. If the
* receiver is a wrapper and the wrapped object implements the interface then the result is the wrapped object or a
* proxy for the wrapped object. Otherwise return the the result of calling unwrap recursively on the
* wrapped object or a proxy for that result. If the receiver is not a wrapper and does not implement the interface,
* then an SQLException is thrown.
*
* @param iface A Class defining an interface that the result must implement.
* @return an object that implements the interface. May be a proxy for the actual implementing object.
* @throws SQLException If no object found that implements the interface
* @since 1.6
*/
public T unwrap(final Class iface) throws SQLException {
try {
if (isWrapperFor(iface)) {
return iface.cast(this);
} else {
throw new SQLException("The receiver is not a wrapper and does not implement the interface");
}
} catch (Exception e) {
throw new SQLException("The receiver is not a wrapper and does not implement the interface");
}
}
/**
* Returns true if this either implements the interface argument or is directly or indirectly a wrapper for an
* object that does. Returns false otherwise. If this implements the interface then return true, else if this is a
* wrapper then return the result of recursively calling isWrapperFor on the wrapped object. If this
* does not implement the interface and is not a wrapper, return false. This method should be implemented as a
* low-cost operation compared to unwrap so that callers can use this method to avoid expensive
* unwrap calls that may fail. If this method returns true then calling unwrap with the
* same argument should succeed.
*
* @param interfaceOrWrapper a Class defining an interface.
* @return true if this implements the interface or directly or indirectly wraps an object that does.
* @throws SQLException if an error occurs while determining whether this is a wrapper for an object with
* the given interface.
* @since 1.6
*/
public boolean isWrapperFor(final Class interfaceOrWrapper) throws SQLException {
return interfaceOrWrapper.isInstance(this);
}
@Override
public XAConnection getXAConnection() throws SQLException {
return new MariaXaConnection((MariaDbConnection) getConnection());
}
@Override
public XAConnection getXAConnection(String user, String password) throws SQLException {
return new MariaXaConnection((MariaDbConnection) getConnection(user, password));
}
public Logger getParentLogger() throws SQLFeatureNotSupportedException {
return null;
}
/**
* For testing purpose only.
*
* @return current url parser.
*/
protected UrlParser getUrlParser() {
return urlParser;
}
public String getPoolName() {
return (pool != null) ? pool.getPoolTag() : poolName;
}
public void setPoolName(String poolName) throws SQLException {
checkNotInitialized();
this.poolName = poolName;
}
public int getMaxPoolSize() {
return maxPoolSize;
}
public void setMaxPoolSize(int maxPoolSize) throws SQLException {
checkNotInitialized();
this.maxPoolSize = maxPoolSize;
}
public int getMinPoolSize() {
return minPoolSize;
}
public void setMinPoolSize(int minPoolSize) throws SQLException {
checkNotInitialized();
this.minPoolSize = minPoolSize;
}
public int getMaxIdleTime() {
return maxIdleTime;
}
public void setMaxIdleTime(int maxIdleTime) throws SQLException {
checkNotInitialized();
this.maxIdleTime = maxIdleTime;
}
public Boolean getStaticGlobal() {
return staticGlobal;
}
public void setStaticGlobal(Boolean staticGlobal) {
this.staticGlobal = staticGlobal;
}
public Integer getPoolValidMinDelay() {
return poolValidMinDelay;
}
public void setPoolValidMinDelay(Integer poolValidMinDelay) {
this.poolValidMinDelay = poolValidMinDelay;
}
private synchronized void initializeUrlParser() throws SQLException {
if (url != null && !url.isEmpty()) {
Properties props = new Properties();
props.setProperty("pool", "true");
if (user != null) props.setProperty("user", user);
if (password != null) props.setProperty("password", password);
if (poolName != null) props.setProperty("poolName", poolName);
if (database != null) props.setProperty("database", database);
if (maxPoolSize != null) props.setProperty("maxPoolSize", String.valueOf(maxPoolSize));
if (minPoolSize != null) props.setProperty("minPoolSize", String.valueOf(minPoolSize));
if (maxIdleTime != null) props.setProperty("maxIdleTime", String.valueOf(maxIdleTime));
if (connectTimeout != null) props.setProperty("connectTimeout", String.valueOf(connectTimeout));
if (staticGlobal != null) props.setProperty("staticGlobal", String.valueOf(staticGlobal));
if (poolValidMinDelay != null) props.setProperty("poolValidMinDelay", String.valueOf(poolValidMinDelay));
urlParser = UrlParser.parse(url, props);
} else {
Options options = DefaultOptions.defaultValues(HaMode.NONE);
options.pool = true;
options.user = user;
options.password = password;
options.poolName = poolName;
if (maxPoolSize != null) options.maxPoolSize = maxPoolSize;
if (minPoolSize != null) options.minPoolSize = minPoolSize;
if (maxIdleTime != null) options.maxIdleTime = maxIdleTime;
if (staticGlobal != null) options.staticGlobal = staticGlobal;
if (connectTimeout != null) options.connectTimeout = connectTimeout;
if (poolValidMinDelay != null) options.poolValidMinDelay = poolValidMinDelay;
urlParser = new UrlParser(database,
Collections.singletonList(
new HostAddress(
(hostname == null || hostname.isEmpty()) ? "localhost" : hostname,
port == null ? 3306 : port)),
options,
HaMode.NONE);
}
}
/**
* Close datasource.
*/
public void close() {
if (pool != null) pool.close();
}
/**
* Initialize pool.
*
* @throws SQLException if connection string has error
*/
public synchronized void initialize() throws SQLException {
if (pool == null) {
initializeUrlParser();
pool = Pools.retrievePool(urlParser);
}
}
/**
* Get current idle threads.
* !! For testing purpose only !!
*
* @return current thread id's
*/
public List testGetConnectionIdleThreadIds() {
return pool.testGetConnectionIdleThreadIds();
}
/**
* Permit to create test that doesn't wait for maxIdleTime minimum value of 60 seconds.
* !! For testing purpose only !!
*
* @param maxIdleTime forced value of maxIdleTime option.
* @throws SQLException if connection string has error
*/
public void testForceMaxIdleTime(int maxIdleTime) throws SQLException {
initializeUrlParser();
urlParser.getOptions().maxIdleTime = maxIdleTime;
pool = Pools.retrievePool(urlParser);
}
/**
* Get pool.
* !! For testing purpose only !!
*
* @return pool
*/
public Pool testGetPool() {
return pool;
}
}