broker-plugins/jdbc-provider-bone/src/main/java/org/apache/qpid/server/store/jdbc/bonecp/BoneCPConnectionProvider.java

/*
 *
 * 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
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package org.apache.qpid.server.store.jdbc.bonecp;

import static org.apache.qpid.server.store.jdbc.bonecp.BoneCPConnectionProviderFactory.JDBCSTORE_PREFIX;
import static org.apache.qpid.server.store.jdbc.bonecp.BoneCPConnectionProviderFactory.MAX_CONNECTIONS_PER_PARTITION;
import static org.apache.qpid.server.store.jdbc.bonecp.BoneCPConnectionProviderFactory.MIN_CONNECTIONS_PER_PARTITION;
import static org.apache.qpid.server.store.jdbc.bonecp.BoneCPConnectionProviderFactory.PARTITION_COUNT;

import java.sql.Connection;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import java.util.stream.Collectors;

import com.jolbox.bonecp.BoneCP;
import com.jolbox.bonecp.BoneCPConfig;

import org.apache.qpid.server.configuration.IllegalConfigurationException;
import org.apache.qpid.server.store.jdbc.ConnectionProvider;
import org.apache.qpid.server.util.ServerScopedRuntimeException;

public class BoneCPConnectionProvider implements ConnectionProvider
{
    public static final int DEFAULT_MIN_CONNECTIONS_PER_PARTITION = 5;
    public static final int DEFAULT_MAX_CONNECTIONS_PER_PARTITION = 10;
    public static final int DEFAULT_PARTITION_COUNT = 4;

    private final BoneCP _connectionPool;

    public BoneCPConnectionProvider(String connectionUrl, String username, String password, Map<String, String> providerAttributes) throws SQLException
    {
        _connectionPool = new BoneCP(createBoneCPConfig(connectionUrl, username, password, providerAttributes));
    }

    static BoneCPConfig createBoneCPConfig(final String connectionUrl,
                                           final String username,
                                           final String password,
                                           final Map<String, String> providerAttributes)
    {
        BoneCPConfig config = new BoneCPConfig();
        config.setJdbcUrl(connectionUrl);
        if (username != null)
        {
            config.setUsername(username);
            config.setPassword(password);
        }

        Map<String, String> attributes = new HashMap<>(providerAttributes);
        attributes.putIfAbsent(MIN_CONNECTIONS_PER_PARTITION, String.valueOf(DEFAULT_MIN_CONNECTIONS_PER_PARTITION));
        attributes.putIfAbsent(MAX_CONNECTIONS_PER_PARTITION, String.valueOf(DEFAULT_MAX_CONNECTIONS_PER_PARTITION));
        attributes.putIfAbsent(PARTITION_COUNT, String.valueOf(DEFAULT_PARTITION_COUNT));

        Map<String, String> propertiesMap =
                attributes.entrySet()
                          .stream()
                          .collect(Collectors.toMap(p -> p.getKey().substring(JDBCSTORE_PREFIX.length()),
                                                    Map.Entry::getValue));

        Properties properties = new Properties();
        properties.putAll(propertiesMap);

        try
        {
            config.setProperties(properties);
        }
        catch (Exception e)
        {
            throw new IllegalConfigurationException("Unexpected exception on applying BoneCP configuration", e);
        }
        return config;
    }

    @Override
    public Connection getConnection() throws SQLException
    {
        return _connectionPool.getConnection();
    }

    @Override
    public void close() throws SQLException
    {
        _connectionPool.shutdown();
    }
}