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 * Licensed to the Apache Software Foundation (ASF) under one   *
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 * 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   *
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 * software distributed under the License is distributed on an  *
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
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package org.apache.james.lmtpserver.netty;

import java.util.ArrayList;
import java.util.List;

import javax.inject.Inject;

import org.apache.commons.configuration2.HierarchicalConfiguration;
import org.apache.commons.configuration2.tree.ImmutableNode;
import org.apache.james.filesystem.api.FileSystem;
import org.apache.james.metrics.api.MetricFactory;
import org.apache.james.protocols.lib.handler.ProtocolHandlerLoader;
import org.apache.james.protocols.lib.netty.AbstractConfigurableAsyncServer;
import org.apache.james.protocols.lib.netty.AbstractServerFactory;
import org.jboss.netty.util.HashedWheelTimer;

public class LMTPServerFactory extends AbstractServerFactory {

    private final ProtocolHandlerLoader loader;
    private final FileSystem fileSystem;
    protected final LMTPMetricsImpl lmtpMetrics;
    private final HashedWheelTimer hashedWheelTimer;

    @Inject
    public LMTPServerFactory(ProtocolHandlerLoader loader, FileSystem fileSystem, MetricFactory metricFactory,
                             HashedWheelTimer hashedWheelTimer) {
        this.loader = loader;
        this.fileSystem = fileSystem;
        this.lmtpMetrics = new LMTPMetricsImpl(metricFactory);
        this.hashedWheelTimer = hashedWheelTimer;
    }

    protected LMTPServer createServer() {
       return new LMTPServer(lmtpMetrics);
    }
    
    @Override
    protected List<AbstractConfigurableAsyncServer> createServers(HierarchicalConfiguration<ImmutableNode> config) throws Exception {
        List<AbstractConfigurableAsyncServer> servers = new ArrayList<>();
        List<HierarchicalConfiguration<ImmutableNode>> configs = config.configurationsAt("lmtpserver");
        
        for (HierarchicalConfiguration<ImmutableNode> serverConfig: configs) {
            LMTPServer server = createServer();
            server.setFileSystem(fileSystem);
            server.setHashWheelTimer(hashedWheelTimer);
            server.setProtocolHandlerLoader(loader);
            server.configure(serverConfig);
            servers.add(server);
        }

        return servers;
    }
}
