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Apache Commons DBCP software implements Database Connection Pooling
/*
* 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.commons.dbcp2.datasources;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.Serializable;
import java.nio.charset.StandardCharsets;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.SQLFeatureNotSupportedException;
import java.util.NoSuchElementException;
import java.util.Properties;
import java.util.logging.Logger;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.Referenceable;
import javax.sql.ConnectionPoolDataSource;
import javax.sql.DataSource;
import javax.sql.PooledConnection;
import org.apache.commons.pool2.impl.BaseObjectPoolConfig;
import org.apache.commons.pool2.impl.GenericKeyedObjectPoolConfig;
/**
*
* The base class for SharedPoolDataSource and PerUserPoolDataSource. Many of the
* configuration properties are shared and defined here. This class is declared public in order to allow particular
* usage with commons-beanutils; do not make direct use of it outside of commons-dbcp2.
*
*
*
* A J2EE container will normally provide some method of initializing the DataSource whose attributes are
* presented as bean getters/setters and then deploying it via JNDI. It is then available to an application as a source
* of pooled logical connections to the database. The pool needs a source of physical connections. This source is in the
* form of a ConnectionPoolDataSource that can be specified via the {@link #setDataSourceName(String)} used
* to lookup the source via JNDI.
*
*
*
* Although normally used within a JNDI environment, A DataSource can be instantiated and initialized as any bean. In
* this case the ConnectionPoolDataSource will likely be instantiated in a similar manner. This class
* allows the physical source of connections to be attached directly to this pool using the
* {@link #setConnectionPoolDataSource(ConnectionPoolDataSource)} method.
*
*
*
* The dbcp package contains an adapter, {@link org.apache.commons.dbcp2.cpdsadapter.DriverAdapterCPDS}, that can be
* used to allow the use of DataSource's based on this class with JDBC driver implementations that do not
* supply a ConnectionPoolDataSource, but still provide a {@link java.sql.Driver} implementation.
*
*
*
* The package documentation contains an example using Apache Tomcat and JNDI and it
* also contains a non-JNDI example.
*
*
* @since 2.0
*/
public abstract class InstanceKeyDataSource implements DataSource, Referenceable, Serializable, AutoCloseable {
private static final long serialVersionUID = -6819270431752240878L;
private static final String GET_CONNECTION_CALLED = "A Connection was already requested from this source, "
+ "further initialization is not allowed.";
private static final String BAD_TRANSACTION_ISOLATION = "The requested TransactionIsolation level is invalid.";
/**
* Internal constant to indicate the level is not set.
*/
protected static final int UNKNOWN_TRANSACTIONISOLATION = -1;
/** Guards property setters - once true, setters throw IllegalStateException */
private volatile boolean getConnectionCalled;
/** Underlying source of PooledConnections */
private ConnectionPoolDataSource dataSource;
/** DataSource Name used to find the ConnectionPoolDataSource */
private String dataSourceName;
/** Description */
private String description;
/** Environment that may be used to set up a JNDI initial context. */
private Properties jndiEnvironment;
/** Login TimeOut in seconds */
private int loginTimeout;
/** Log stream */
private PrintWriter logWriter;
/** Instance key */
private String instanceKey;
// Pool properties
private boolean defaultBlockWhenExhausted = BaseObjectPoolConfig.DEFAULT_BLOCK_WHEN_EXHAUSTED;
private String defaultEvictionPolicyClassName = BaseObjectPoolConfig.DEFAULT_EVICTION_POLICY_CLASS_NAME;
private boolean defaultLifo = BaseObjectPoolConfig.DEFAULT_LIFO;
private int defaultMaxIdle = GenericKeyedObjectPoolConfig.DEFAULT_MAX_IDLE_PER_KEY;
private int defaultMaxTotal = GenericKeyedObjectPoolConfig.DEFAULT_MAX_TOTAL;
private long defaultMaxWaitMillis = BaseObjectPoolConfig.DEFAULT_MAX_WAIT_MILLIS;
private long defaultMinEvictableIdleTimeMillis = BaseObjectPoolConfig.DEFAULT_MIN_EVICTABLE_IDLE_TIME_MILLIS;
private int defaultMinIdle = GenericKeyedObjectPoolConfig.DEFAULT_MIN_IDLE_PER_KEY;
private int defaultNumTestsPerEvictionRun = BaseObjectPoolConfig.DEFAULT_NUM_TESTS_PER_EVICTION_RUN;
private long defaultSoftMinEvictableIdleTimeMillis = BaseObjectPoolConfig.DEFAULT_SOFT_MIN_EVICTABLE_IDLE_TIME_MILLIS;
private boolean defaultTestOnCreate = BaseObjectPoolConfig.DEFAULT_TEST_ON_CREATE;
private boolean defaultTestOnBorrow = BaseObjectPoolConfig.DEFAULT_TEST_ON_BORROW;
private boolean defaultTestOnReturn = BaseObjectPoolConfig.DEFAULT_TEST_ON_RETURN;
private boolean defaultTestWhileIdle = BaseObjectPoolConfig.DEFAULT_TEST_WHILE_IDLE;
private long defaultTimeBetweenEvictionRunsMillis = BaseObjectPoolConfig.DEFAULT_TIME_BETWEEN_EVICTION_RUNS_MILLIS;
// Connection factory properties
private String validationQuery;
private int validationQueryTimeoutSeconds = -1;
private boolean rollbackAfterValidation;
private long maxConnLifetimeMillis = -1;
// Connection properties
private Boolean defaultAutoCommit;
private int defaultTransactionIsolation = UNKNOWN_TRANSACTIONISOLATION;
private Boolean defaultReadOnly;
/**
* Default no-arg constructor for Serialization
*/
public InstanceKeyDataSource() {
}
/**
* Throws an IllegalStateException, if a PooledConnection has already been requested.
*
* @throws IllegalStateException Thrown if a PooledConnection has already been requested.
*/
protected void assertInitializationAllowed() throws IllegalStateException {
if (getConnectionCalled) {
throw new IllegalStateException(GET_CONNECTION_CALLED);
}
}
/**
* Closes the connection pool being maintained by this datasource.
*/
@Override
public abstract void close() throws Exception;
protected abstract PooledConnectionManager getConnectionManager(UserPassKey upkey);
/* JDBC_4_ANT_KEY_BEGIN */
@Override
public boolean isWrapperFor(final Class iface) throws SQLException {
return false;
}
@Override
public T unwrap(final Class iface) throws SQLException {
throw new SQLException("InstanceKeyDataSource is not a wrapper.");
}
/* JDBC_4_ANT_KEY_END */
@Override
public Logger getParentLogger() throws SQLFeatureNotSupportedException {
throw new SQLFeatureNotSupportedException();
}
// -------------------------------------------------------------------
// Properties
/**
* Gets the default value for {@link GenericKeyedObjectPoolConfig#getBlockWhenExhausted()} for each per user pool.
*
* @return The default value for {@link GenericKeyedObjectPoolConfig#getBlockWhenExhausted()} for each per user
* pool.
*/
public boolean getDefaultBlockWhenExhausted() {
return this.defaultBlockWhenExhausted;
}
/**
* Sets the default value for {@link GenericKeyedObjectPoolConfig#getBlockWhenExhausted()} for each per user pool.
*
* @param blockWhenExhausted
* The default value for {@link GenericKeyedObjectPoolConfig#getBlockWhenExhausted()} for each per user
* pool.
*/
public void setDefaultBlockWhenExhausted(final boolean blockWhenExhausted) {
assertInitializationAllowed();
this.defaultBlockWhenExhausted = blockWhenExhausted;
}
/**
* Gets the default value for {@link GenericKeyedObjectPoolConfig#getEvictionPolicyClassName()} for each per user
* pool.
*
* @return The default value for {@link GenericKeyedObjectPoolConfig#getEvictionPolicyClassName()} for each per user
* pool.
*/
public String getDefaultEvictionPolicyClassName() {
return this.defaultEvictionPolicyClassName;
}
/**
* Sets the default value for {@link GenericKeyedObjectPoolConfig#getEvictionPolicyClassName()} for each per user
* pool.
*
* @param evictionPolicyClassName
* The default value for {@link GenericKeyedObjectPoolConfig#getEvictionPolicyClassName()} for each per
* user pool.
*/
public void setDefaultEvictionPolicyClassName(final String evictionPolicyClassName) {
assertInitializationAllowed();
this.defaultEvictionPolicyClassName = evictionPolicyClassName;
}
/**
* Gets the default value for {@link GenericKeyedObjectPoolConfig#getLifo()} for each per user pool.
*
* @return The default value for {@link GenericKeyedObjectPoolConfig#getLifo()} for each per user pool.
*/
public boolean getDefaultLifo() {
return this.defaultLifo;
}
/**
* Sets the default value for {@link GenericKeyedObjectPoolConfig#getLifo()} for each per user pool.
*
* @param lifo
* The default value for {@link GenericKeyedObjectPoolConfig#getLifo()} for each per user pool.
*/
public void setDefaultLifo(final boolean lifo) {
assertInitializationAllowed();
this.defaultLifo = lifo;
}
/**
* Gets the default value for {@link GenericKeyedObjectPoolConfig#getMaxIdlePerKey()} for each per user pool.
*
* @return The default value for {@link GenericKeyedObjectPoolConfig#getMaxIdlePerKey()} for each per user pool.
*/
public int getDefaultMaxIdle() {
return this.defaultMaxIdle;
}
/**
* Sets the default value for {@link GenericKeyedObjectPoolConfig#getMaxIdlePerKey()} for each per user pool.
*
* @param maxIdle
* The default value for {@link GenericKeyedObjectPoolConfig#getMaxIdlePerKey()} for each per user pool.
*/
public void setDefaultMaxIdle(final int maxIdle) {
assertInitializationAllowed();
this.defaultMaxIdle = maxIdle;
}
/**
* Gets the default value for {@link GenericKeyedObjectPoolConfig#getMaxTotalPerKey()} for each per user pool.
*
* @return The default value for {@link GenericKeyedObjectPoolConfig#getMaxTotalPerKey()} for each per user pool.
*/
public int getDefaultMaxTotal() {
return this.defaultMaxTotal;
}
/**
* Sets the default value for {@link GenericKeyedObjectPoolConfig#getMaxTotalPerKey()} for each per user pool.
*
* @param maxTotal
* The default value for {@link GenericKeyedObjectPoolConfig#getMaxTotalPerKey()} for each per user pool.
*/
public void setDefaultMaxTotal(final int maxTotal) {
assertInitializationAllowed();
this.defaultMaxTotal = maxTotal;
}
/**
* Gets the default value for {@link GenericKeyedObjectPoolConfig#getMaxWaitMillis()} for each per user pool.
*
* @return The default value for {@link GenericKeyedObjectPoolConfig#getMaxWaitMillis()} for each per user pool.
*/
public long getDefaultMaxWaitMillis() {
return this.defaultMaxWaitMillis;
}
/**
* Sets the default value for {@link GenericKeyedObjectPoolConfig#getMaxWaitMillis()} for each per user pool.
*
* @param maxWaitMillis
* The default value for {@link GenericKeyedObjectPoolConfig#getMaxWaitMillis()} for each per user pool.
*/
public void setDefaultMaxWaitMillis(final long maxWaitMillis) {
assertInitializationAllowed();
this.defaultMaxWaitMillis = maxWaitMillis;
}
/**
* Gets the default value for {@link GenericKeyedObjectPoolConfig#getMinEvictableIdleTimeMillis()} for each per user
* pool.
*
* @return The default value for {@link GenericKeyedObjectPoolConfig#getMinEvictableIdleTimeMillis()} for each per
* user pool.
*/
public long getDefaultMinEvictableIdleTimeMillis() {
return this.defaultMinEvictableIdleTimeMillis;
}
/**
* Sets the default value for {@link GenericKeyedObjectPoolConfig#getMinEvictableIdleTimeMillis()} for each per user
* pool.
*
* @param minEvictableIdleTimeMillis
* The default value for {@link GenericKeyedObjectPoolConfig#getMinEvictableIdleTimeMillis()} for each
* per user pool.
*/
public void setDefaultMinEvictableIdleTimeMillis(final long minEvictableIdleTimeMillis) {
assertInitializationAllowed();
this.defaultMinEvictableIdleTimeMillis = minEvictableIdleTimeMillis;
}
/**
* Gets the default value for {@link GenericKeyedObjectPoolConfig#getMinIdlePerKey()} for each per user pool.
*
* @return The default value for {@link GenericKeyedObjectPoolConfig#getMinIdlePerKey()} for each per user pool.
*/
public int getDefaultMinIdle() {
return this.defaultMinIdle;
}
/**
* Sets the default value for {@link GenericKeyedObjectPoolConfig#getMinIdlePerKey()} for each per user pool.
*
* @param minIdle
* The default value for {@link GenericKeyedObjectPoolConfig#getMinIdlePerKey()} for each per user pool.
*/
public void setDefaultMinIdle(final int minIdle) {
assertInitializationAllowed();
this.defaultMinIdle = minIdle;
}
/**
* Gets the default value for {@link GenericKeyedObjectPoolConfig#getNumTestsPerEvictionRun()} for each per user
* pool.
*
* @return The default value for {@link GenericKeyedObjectPoolConfig#getNumTestsPerEvictionRun()} for each per user
* pool.
*/
public int getDefaultNumTestsPerEvictionRun() {
return this.defaultNumTestsPerEvictionRun;
}
/**
* Sets the default value for {@link GenericKeyedObjectPoolConfig#getNumTestsPerEvictionRun()} for each per user
* pool.
*
* @param numTestsPerEvictionRun
* The default value for {@link GenericKeyedObjectPoolConfig#getNumTestsPerEvictionRun()} for each per
* user pool.
*/
public void setDefaultNumTestsPerEvictionRun(final int numTestsPerEvictionRun) {
assertInitializationAllowed();
this.defaultNumTestsPerEvictionRun = numTestsPerEvictionRun;
}
/**
* Gets the default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getSoftMinEvictableIdleTimeMillis()} for each per user pool.
*
* @return The default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getSoftMinEvictableIdleTimeMillis()} for each per user pool.
*/
public long getDefaultSoftMinEvictableIdleTimeMillis() {
return this.defaultSoftMinEvictableIdleTimeMillis;
}
/**
* Sets the default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getSoftMinEvictableIdleTimeMillis()} for each per user pool.
*
* @param softMinEvictableIdleTimeMillis
* The default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getSoftMinEvictableIdleTimeMillis()} for each per user pool.
*/
public void setDefaultSoftMinEvictableIdleTimeMillis(final long softMinEvictableIdleTimeMillis) {
assertInitializationAllowed();
this.defaultSoftMinEvictableIdleTimeMillis = softMinEvictableIdleTimeMillis;
}
/**
* Gets the default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getTestOnCreate()} for each per user pool.
*
* @return The default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getTestOnCreate()} for each per user pool.
*/
public boolean getDefaultTestOnCreate() {
return this.defaultTestOnCreate;
}
/**
* Sets the default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getTestOnCreate()} for each per user pool.
*
* @param testOnCreate
* The default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getTestOnCreate()} for each per user pool.
*/
public void setDefaultTestOnCreate(final boolean testOnCreate) {
assertInitializationAllowed();
this.defaultTestOnCreate = testOnCreate;
}
/**
* Gets the default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getTestOnBorrow()} for each per user pool.
*
* @return The default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getTestOnBorrow()} for each per user pool.
*/
public boolean getDefaultTestOnBorrow() {
return this.defaultTestOnBorrow;
}
/**
* Sets the default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getTestOnBorrow()} for each per user pool.
*
* @param testOnBorrow
* The default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getTestOnBorrow()} for each per user pool.
*/
public void setDefaultTestOnBorrow(final boolean testOnBorrow) {
assertInitializationAllowed();
this.defaultTestOnBorrow = testOnBorrow;
}
/**
* Gets the default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getTestOnReturn()} for each per user pool.
*
* @return The default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getTestOnReturn()} for each per user pool.
*/
public boolean getDefaultTestOnReturn() {
return this.defaultTestOnReturn;
}
/**
* Sets the default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getTestOnReturn()} for each per user pool.
*
* @param testOnReturn
* The default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getTestOnReturn()} for each per user pool.
*/
public void setDefaultTestOnReturn(final boolean testOnReturn) {
assertInitializationAllowed();
this.defaultTestOnReturn = testOnReturn;
}
/**
* Gets the default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getTestWhileIdle()} for each per user pool.
*
* @return The default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getTestWhileIdle()} for each per user pool.
*/
public boolean getDefaultTestWhileIdle() {
return this.defaultTestWhileIdle;
}
/**
* Sets the default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getTestWhileIdle()} for each per user pool.
*
* @param testWhileIdle
* The default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getTestWhileIdle()} for each per user pool.
*/
public void setDefaultTestWhileIdle(final boolean testWhileIdle) {
assertInitializationAllowed();
this.defaultTestWhileIdle = testWhileIdle;
}
/**
* Gets the default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getTimeBetweenEvictionRunsMillis ()} for each per user pool.
*
* @return The default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getTimeBetweenEvictionRunsMillis ()} for each per user pool.
*/
public long getDefaultTimeBetweenEvictionRunsMillis() {
return this.defaultTimeBetweenEvictionRunsMillis;
}
/**
* Sets the default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getTimeBetweenEvictionRunsMillis ()} for each per user pool.
*
* @param timeBetweenEvictionRunsMillis
* The default value for {@link org.apache.commons.pool2.impl.GenericObjectPool
* GenericObjectPool#getTimeBetweenEvictionRunsMillis ()} for each per user pool.
*/
public void setDefaultTimeBetweenEvictionRunsMillis(final long timeBetweenEvictionRunsMillis) {
assertInitializationAllowed();
this.defaultTimeBetweenEvictionRunsMillis = timeBetweenEvictionRunsMillis;
}
/**
* Gets the value of connectionPoolDataSource. This method will return null, if the backing data source is being
* accessed via JNDI.
*
* @return value of connectionPoolDataSource.
*/
public ConnectionPoolDataSource getConnectionPoolDataSource() {
return dataSource;
}
/**
* Sets the backend ConnectionPoolDataSource. This property should not be set if using JNDI to access the
* data source.
*
* @param v
* Value to assign to connectionPoolDataSource.
*/
public void setConnectionPoolDataSource(final ConnectionPoolDataSource v) {
assertInitializationAllowed();
if (dataSourceName != null) {
throw new IllegalStateException("Cannot set the DataSource, if JNDI is used.");
}
if (dataSource != null) {
throw new IllegalStateException("The CPDS has already been set. It cannot be altered.");
}
dataSource = v;
instanceKey = InstanceKeyDataSourceFactory.registerNewInstance(this);
}
/**
* Gets the name of the ConnectionPoolDataSource which backs this pool. This name is used to look up the data source
* from a JNDI service provider.
*
* @return value of dataSourceName.
*/
public String getDataSourceName() {
return dataSourceName;
}
/**
* Sets the name of the ConnectionPoolDataSource which backs this pool. This name is used to look up the data source
* from a JNDI service provider.
*
* @param v
* Value to assign to dataSourceName.
*/
public void setDataSourceName(final String v) {
assertInitializationAllowed();
if (dataSource != null) {
throw new IllegalStateException("Cannot set the JNDI name for the DataSource, if already "
+ "set using setConnectionPoolDataSource.");
}
if (dataSourceName != null) {
throw new IllegalStateException("The DataSourceName has already been set. " + "It cannot be altered.");
}
this.dataSourceName = v;
instanceKey = InstanceKeyDataSourceFactory.registerNewInstance(this);
}
/**
* Gets the value of defaultAutoCommit, which defines the state of connections handed out from this pool. The value
* can be changed on the Connection using Connection.setAutoCommit(boolean). The default is null which
* will use the default value for the drive.
*
* @return value of defaultAutoCommit.
*/
public Boolean isDefaultAutoCommit() {
return defaultAutoCommit;
}
/**
* Sets the value of defaultAutoCommit, which defines the state of connections handed out from this pool. The value
* can be changed on the Connection using Connection.setAutoCommit(boolean). The default is null which
* will use the default value for the drive.
*
* @param v
* Value to assign to defaultAutoCommit.
*/
public void setDefaultAutoCommit(final Boolean v) {
assertInitializationAllowed();
this.defaultAutoCommit = v;
}
/**
* Gets the value of defaultReadOnly, which defines the state of connections handed out from this pool. The value
* can be changed on the Connection using Connection.setReadOnly(boolean). The default is null which
* will use the default value for the drive.
*
* @return value of defaultReadOnly.
*/
public Boolean isDefaultReadOnly() {
return defaultReadOnly;
}
/**
* Sets the value of defaultReadOnly, which defines the state of connections handed out from this pool. The value
* can be changed on the Connection using Connection.setReadOnly(boolean). The default is null which
* will use the default value for the drive.
*
* @param v
* Value to assign to defaultReadOnly.
*/
public void setDefaultReadOnly(final Boolean v) {
assertInitializationAllowed();
this.defaultReadOnly = v;
}
/**
* Gets the value of defaultTransactionIsolation, which defines the state of connections handed out from this pool.
* The value can be changed on the Connection using Connection.setTransactionIsolation(int). If this method returns
* -1, the default is JDBC driver dependent.
*
* @return value of defaultTransactionIsolation.
*/
public int getDefaultTransactionIsolation() {
return defaultTransactionIsolation;
}
/**
* Sets the value of defaultTransactionIsolation, which defines the state of connections handed out from this pool.
* The value can be changed on the Connection using Connection.setTransactionIsolation(int). The default is JDBC
* driver dependent.
*
* @param v
* Value to assign to defaultTransactionIsolation
*/
public void setDefaultTransactionIsolation(final int v) {
assertInitializationAllowed();
switch (v) {
case Connection.TRANSACTION_NONE:
case Connection.TRANSACTION_READ_COMMITTED:
case Connection.TRANSACTION_READ_UNCOMMITTED:
case Connection.TRANSACTION_REPEATABLE_READ:
case Connection.TRANSACTION_SERIALIZABLE:
break;
default:
throw new IllegalArgumentException(BAD_TRANSACTION_ISOLATION);
}
this.defaultTransactionIsolation = v;
}
/**
* Gets the description. This property is defined by JDBC as for use with GUI (or other) tools that might deploy the
* datasource. It serves no internal purpose.
*
* @return value of description.
*/
public String getDescription() {
return description;
}
/**
* Sets the description. This property is defined by JDBC as for use with GUI (or other) tools that might deploy the
* datasource. It serves no internal purpose.
*
* @param v
* Value to assign to description.
*/
public void setDescription(final String v) {
this.description = v;
}
protected String getInstanceKey() {
return instanceKey;
}
/**
* Gets the value of jndiEnvironment which is used when instantiating a JNDI InitialContext. This InitialContext is
* used to locate the backend ConnectionPoolDataSource.
*
* @param key
* JNDI environment key.
* @return value of jndiEnvironment.
*/
public String getJndiEnvironment(final String key) {
String value = null;
if (jndiEnvironment != null) {
value = jndiEnvironment.getProperty(key);
}
return value;
}
/**
* Sets the value of the given JNDI environment property to be used when instantiating a JNDI InitialContext. This
* InitialContext is used to locate the backend ConnectionPoolDataSource.
*
* @param key
* the JNDI environment property to set.
* @param value
* the value assigned to specified JNDI environment property.
*/
public void setJndiEnvironment(final String key, final String value) {
if (jndiEnvironment == null) {
jndiEnvironment = new Properties();
}
jndiEnvironment.setProperty(key, value);
}
/**
* Sets the JNDI environment to be used when instantiating a JNDI InitialContext. This InitialContext is used to
* locate the backend ConnectionPoolDataSource.
*
* @param properties
* the JNDI environment property to set which will overwrite any current settings
*/
void setJndiEnvironment(final Properties properties) {
if (jndiEnvironment == null) {
jndiEnvironment = new Properties();
} else {
jndiEnvironment.clear();
}
jndiEnvironment.putAll(properties);
}
/**
* Gets the value of loginTimeout.
*
* @return value of loginTimeout.
*/
@Override
public int getLoginTimeout() {
return loginTimeout;
}
/**
* Sets the value of loginTimeout.
*
* @param v
* Value to assign to loginTimeout.
*/
@Override
public void setLoginTimeout(final int v) {
this.loginTimeout = v;
}
/**
* Gets the value of logWriter.
*
* @return value of logWriter.
*/
@Override
public PrintWriter getLogWriter() {
if (logWriter == null) {
logWriter = new PrintWriter(new OutputStreamWriter(System.out, StandardCharsets.UTF_8));
}
return logWriter;
}
/**
* Sets the value of logWriter.
*
* @param v
* Value to assign to logWriter.
*/
@Override
public void setLogWriter(final PrintWriter v) {
this.logWriter = v;
}
/**
* Gets the SQL query that will be used to validate connections from this pool before returning them to the caller.
* If specified, this query MUST be an SQL SELECT statement that returns at least one row. If not
* specified, {@link Connection#isValid(int)} will be used to validate connections.
*
* @return The SQL query that will be used to validate connections from this pool before returning them to the
* caller.
*/
public String getValidationQuery() {
return this.validationQuery;
}
/**
* Sets the SQL query that will be used to validate connections from this pool before returning them to the caller.
* If specified, this query MUST be an SQL SELECT statement that returns at least one row. If not
* specified, connections will be validated using {@link Connection#isValid(int)}.
*
* @param validationQuery
* The SQL query that will be used to validate connections from this pool before returning them to the
* caller.
*/
public void setValidationQuery(final String validationQuery) {
assertInitializationAllowed();
this.validationQuery = validationQuery;
}
/**
* Returns the timeout in seconds before the validation query fails.
*
* @return The timeout in seconds before the validation query fails.
*/
public int getValidationQueryTimeout() {
return validationQueryTimeoutSeconds;
}
/**
* Sets the timeout in seconds before the validation query fails.
*
* @param validationQueryTimeoutSeconds
* The new timeout in seconds
*/
public void setValidationQueryTimeout(final int validationQueryTimeoutSeconds) {
this.validationQueryTimeoutSeconds = validationQueryTimeoutSeconds;
}
/**
* Whether a rollback will be issued after executing the SQL query that will be used to validate connections from
* this pool before returning them to the caller.
*
* @return true if a rollback will be issued after executing the validation query
*/
public boolean isRollbackAfterValidation() {
return this.rollbackAfterValidation;
}
/**
* Whether a rollback will be issued after executing the SQL query that will be used to validate connections from
* this pool before returning them to the caller. Default behavior is NOT to issue a rollback. The setting will only
* have an effect if a validation query is set
*
* @param rollbackAfterValidation
* new property value
*/
public void setRollbackAfterValidation(final boolean rollbackAfterValidation) {
assertInitializationAllowed();
this.rollbackAfterValidation = rollbackAfterValidation;
}
/**
* Returns the maximum permitted lifetime of a connection in milliseconds. A value of zero or less indicates an
* infinite lifetime.
*
* @return The maximum permitted lifetime of a connection in milliseconds. A value of zero or less indicates an
* infinite lifetime.
*/
public long getMaxConnLifetimeMillis() {
return maxConnLifetimeMillis;
}
/**
*
* Sets the maximum permitted lifetime of a connection in milliseconds. A value of zero or less indicates an
* infinite lifetime.
*
*
* Note: this method currently has no effect once the pool has been initialized. The pool is initialized the first
* time one of the following methods is invoked: getConnection, setLogwriter,
* setLoginTimeout, getLoginTimeout, getLogWriter.
*
*
* @param maxConnLifetimeMillis
* The maximum permitted lifetime of a connection in milliseconds. A value of zero or less indicates an
* infinite lifetime.
*/
public void setMaxConnLifetimeMillis(final long maxConnLifetimeMillis) {
this.maxConnLifetimeMillis = maxConnLifetimeMillis;
}
// ----------------------------------------------------------------------
// Instrumentation Methods
// ----------------------------------------------------------------------
// DataSource implementation
/**
* Attempts to establish a database connection.
*/
@Override
public Connection getConnection() throws SQLException {
return getConnection(null, null);
}
/**
* Attempts to retrieve a database connection using {@link #getPooledConnectionAndInfo(String, String)} with the
* provided user name and password. The password on the {@link PooledConnectionAndInfo} instance returned by
* getPooledConnectionAndInfo is compared to the password parameter. If the comparison
* fails, a database connection using the supplied user name and password is attempted. If the connection attempt
* fails, an SQLException is thrown, indicating that the given password did not match the password used to create
* the pooled connection. If the connection attempt succeeds, this means that the database password has been
* changed. In this case, the PooledConnectionAndInfo instance retrieved with the old password is
* destroyed and the getPooledConnectionAndInfo is repeatedly invoked until a
* PooledConnectionAndInfo instance with the new password is returned.
*/
@Override
public Connection getConnection(final String userName, final String userPassword) throws SQLException {
if (instanceKey == null) {
throw new SQLException("Must set the ConnectionPoolDataSource "
+ "through setDataSourceName or setConnectionPoolDataSource" + " before calling getConnection.");
}
getConnectionCalled = true;
PooledConnectionAndInfo info = null;
try {
info = getPooledConnectionAndInfo(userName, userPassword);
} catch (final NoSuchElementException e) {
closeDueToException(info);
throw new SQLException("Cannot borrow connection from pool", e);
} catch (final RuntimeException e) {
closeDueToException(info);
throw e;
} catch (final SQLException e) {
closeDueToException(info);
throw e;
} catch (final Exception e) {
closeDueToException(info);
throw new SQLException("Cannot borrow connection from pool", e);
}
// Password on PooledConnectionAndInfo does not match
if (!(null == userPassword ? null == info.getPassword() : userPassword.equals(info.getPassword()))) {
try { // See if password has changed by attempting connection
testCPDS(userName, userPassword);
} catch (final SQLException ex) {
// Password has not changed, so refuse client, but return connection to the pool
closeDueToException(info);
throw new SQLException(
"Given password did not match password used" + " to create the PooledConnection.", ex);
} catch (final javax.naming.NamingException ne) {
throw new SQLException("NamingException encountered connecting to database", ne);
}
/*
* Password must have changed -> destroy connection and keep retrying until we get a new, good one,
* destroying any idle connections with the old password as we pull them from the pool.
*/
final UserPassKey upkey = info.getUserPassKey();
final PooledConnectionManager manager = getConnectionManager(upkey);
// Destroy and remove from pool
manager.invalidate(info.getPooledConnection());
// Reset the password on the factory if using CPDSConnectionFactory
manager.setPassword(upkey.getPassword());
info = null;
for (int i = 0; i < 10; i++) { // Bound the number of retries - only needed if bad instances return
try {
info = getPooledConnectionAndInfo(userName, userPassword);
} catch (final NoSuchElementException e) {
closeDueToException(info);
throw new SQLException("Cannot borrow connection from pool", e);
} catch (final RuntimeException e) {
closeDueToException(info);
throw e;
} catch (final SQLException e) {
closeDueToException(info);
throw e;
} catch (final Exception e) {
closeDueToException(info);
throw new SQLException("Cannot borrow connection from pool", e);
}
if (info != null && userPassword != null && userPassword.equals(info.getPassword())) {
break;
}
if (info != null) {
manager.invalidate(info.getPooledConnection());
}
info = null;
}
if (info == null) {
throw new SQLException("Cannot borrow connection from pool - password change failure.");
}
}
final Connection con = info.getPooledConnection().getConnection();
try {
setupDefaults(con, userName);
con.clearWarnings();
return con;
} catch (final SQLException ex) {
try {
con.close();
} catch (final Exception exc) {
getLogWriter().println("ignoring exception during close: " + exc);
}
throw ex;
}
}
protected abstract PooledConnectionAndInfo getPooledConnectionAndInfo(String userName, String userPassword)
throws SQLException;
protected abstract void setupDefaults(Connection connection, String userName) throws SQLException;
private void closeDueToException(final PooledConnectionAndInfo info) {
if (info != null) {
try {
info.getPooledConnection().getConnection().close();
} catch (final Exception e) {
// do not throw this exception because we are in the middle
// of handling another exception. But record it because
// it potentially leaks connections from the pool.
getLogWriter().println("[ERROR] Could not return connection to " + "pool during exception handling. "
+ e.getMessage());
}
}
}
protected ConnectionPoolDataSource testCPDS(final String userName, final String userPassword)
throws javax.naming.NamingException, SQLException {
// The source of physical db connections
ConnectionPoolDataSource cpds = this.dataSource;
if (cpds == null) {
Context ctx = null;
if (jndiEnvironment == null) {
ctx = new InitialContext();
} else {
ctx = new InitialContext(jndiEnvironment);
}
final Object ds = ctx.lookup(dataSourceName);
if (ds instanceof ConnectionPoolDataSource) {
cpds = (ConnectionPoolDataSource) ds;
} else {
throw new SQLException("Illegal configuration: " + "DataSource " + dataSourceName + " ("
+ ds.getClass().getName() + ")" + " doesn't implement javax.sql.ConnectionPoolDataSource");
}
}
// try to get a connection with the supplied userName/password
PooledConnection conn = null;
try {
if (userName != null) {
conn = cpds.getPooledConnection(userName, userPassword);
} else {
conn = cpds.getPooledConnection();
}
if (conn == null) {
throw new SQLException("Cannot connect using the supplied userName/password");
}
} finally {
if (conn != null) {
try {
conn.close();
} catch (final SQLException e) {
// at least we could connect
}
}
}
return cpds;
}
/**
* @since 2.6.0
*/
@Override
public synchronized String toString() {
final StringBuilder builder = new StringBuilder(super.toString());
builder.append("[");
toStringFields(builder);
builder.append("]");
return builder.toString();
}
protected void toStringFields(final StringBuilder builder) {
builder.append("getConnectionCalled=");
builder.append(getConnectionCalled);
builder.append(", dataSource=");
builder.append(dataSource);
builder.append(", dataSourceName=");
builder.append(dataSourceName);
builder.append(", description=");
builder.append(description);
builder.append(", jndiEnvironment=");
builder.append(jndiEnvironment);
builder.append(", loginTimeout=");
builder.append(loginTimeout);
builder.append(", logWriter=");
builder.append(logWriter);
builder.append(", instanceKey=");
builder.append(instanceKey);
builder.append(", defaultBlockWhenExhausted=");
builder.append(defaultBlockWhenExhausted);
builder.append(", defaultEvictionPolicyClassName=");
builder.append(defaultEvictionPolicyClassName);
builder.append(", defaultLifo=");
builder.append(defaultLifo);
builder.append(", defaultMaxIdle=");
builder.append(defaultMaxIdle);
builder.append(", defaultMaxTotal=");
builder.append(defaultMaxTotal);
builder.append(", defaultMaxWaitMillis=");
builder.append(defaultMaxWaitMillis);
builder.append(", defaultMinEvictableIdleTimeMillis=");
builder.append(defaultMinEvictableIdleTimeMillis);
builder.append(", defaultMinIdle=");
builder.append(defaultMinIdle);
builder.append(", defaultNumTestsPerEvictionRun=");
builder.append(defaultNumTestsPerEvictionRun);
builder.append(", defaultSoftMinEvictableIdleTimeMillis=");
builder.append(defaultSoftMinEvictableIdleTimeMillis);
builder.append(", defaultTestOnCreate=");
builder.append(defaultTestOnCreate);
builder.append(", defaultTestOnBorrow=");
builder.append(defaultTestOnBorrow);
builder.append(", defaultTestOnReturn=");
builder.append(defaultTestOnReturn);
builder.append(", defaultTestWhileIdle=");
builder.append(defaultTestWhileIdle);
builder.append(", defaultTimeBetweenEvictionRunsMillis=");
builder.append(defaultTimeBetweenEvictionRunsMillis);
builder.append(", validationQuery=");
builder.append(validationQuery);
builder.append(", validationQueryTimeoutSeconds=");
builder.append(validationQueryTimeoutSeconds);
builder.append(", rollbackAfterValidation=");
builder.append(rollbackAfterValidation);
builder.append(", maxConnLifetimeMillis=");
builder.append(maxConnLifetimeMillis);
builder.append(", defaultAutoCommit=");
builder.append(defaultAutoCommit);
builder.append(", defaultTransactionIsolation=");
builder.append(defaultTransactionIsolation);
builder.append(", defaultReadOnly=");
builder.append(defaultReadOnly);
}
}