/*
 * Licensed 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 com.facebook.presto.raptor;

import com.facebook.presto.raptor.backup.BackupModule;
import com.facebook.presto.raptor.storage.StorageModule;
import com.facebook.presto.raptor.util.RebindSafeMBeanServer;
import com.facebook.presto.spi.ConnectorHandleResolver;
import com.facebook.presto.spi.NodeManager;
import com.facebook.presto.spi.PageSorter;
import com.facebook.presto.spi.connector.Connector;
import com.facebook.presto.spi.connector.ConnectorContext;
import com.facebook.presto.spi.connector.ConnectorFactory;
import com.facebook.presto.spi.type.TypeManager;
import com.google.common.base.Throwables;
import com.google.common.collect.ImmutableMap;
import com.google.inject.Injector;
import com.google.inject.Module;
import io.airlift.bootstrap.Bootstrap;
import io.airlift.json.JsonModule;
import org.weakref.jmx.guice.MBeanModule;

import javax.management.MBeanServer;

import java.util.Map;

import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Strings.isNullOrEmpty;
import static java.lang.management.ManagementFactory.getPlatformMBeanServer;
import static java.util.Objects.requireNonNull;

public class RaptorConnectorFactory
        implements ConnectorFactory
{
    private final String name;
    private final Module metadataModule;
    private final Map<String, Module> backupProviders;

    public RaptorConnectorFactory(String name, Module metadataModule, Map<String, Module> backupProviders)
    {
        checkArgument(!isNullOrEmpty(name), "name is null or empty");
        this.name = name;
        this.metadataModule = requireNonNull(metadataModule, "metadataModule is null");
        this.backupProviders = ImmutableMap.copyOf(requireNonNull(backupProviders, "backupProviders is null"));
    }

    @Override
    public String getName()
    {
        return name;
    }

    @Override
    public ConnectorHandleResolver getHandleResolver()
    {
        return new RaptorHandleResolver();
    }

    @Override
    public Connector create(String connectorId, Map<String, String> config, ConnectorContext context)
    {
        NodeManager nodeManager = context.getNodeManager();
        try {
            Bootstrap app = new Bootstrap(
                    new JsonModule(),
                    new MBeanModule(),
                    binder -> {
                        MBeanServer mbeanServer = new RebindSafeMBeanServer(getPlatformMBeanServer());
                        binder.bind(MBeanServer.class).toInstance(mbeanServer);
                        binder.bind(NodeManager.class).toInstance(nodeManager);
                        binder.bind(PageSorter.class).toInstance(context.getPageSorter());
                        binder.bind(TypeManager.class).toInstance(context.getTypeManager());
                    },
                    metadataModule,
                    new BackupModule(backupProviders),
                    new StorageModule(connectorId),
                    new RaptorModule(connectorId));

            Injector injector = app
                    .strictConfig()
                    .doNotInitializeLogging()
                    .setRequiredConfigurationProperties(config)
                    .initialize();

            return injector.getInstance(RaptorConnector.class);
        }
        catch (Exception e) {
            throw Throwables.propagate(e);
        }
    }
}