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/*
 * Fabric3
 * Copyright (c) 2009-2013 Metaform Systems
 *
 * Fabric3 is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, either version 3 of
 * the License, or (at your option) any later version, with the
 * following exception:
 *
 * Linking this software statically or dynamically with other
 * modules is making a combined work based on this software.
 * Thus, the terms and conditions of the GNU General Public
 * License cover the whole combination.
 *
 * As a special exception, the copyright holders of this software
 * give you permission to link this software with independent
 * modules to produce an executable, regardless of the license
 * terms of these independent modules, and to copy and distribute
 * the resulting executable under terms of your choice, provided
 * that you also meet, for each linked independent module, the
 * terms and conditions of the license of that module. An
 * independent module is a module which is not derived from or
 * based on this software. If you modify this software, you may
 * extend this exception to your version of the software, but
 * you are not obligated to do so. If you do not wish to do so,
 * delete this exception statement from your version.
 *
 * Fabric3 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 General Public License for more details.
 *
 * You should have received a copy of the
 * GNU General Public License along with Fabric3.
 * If not, see .
 *
 * ----------------------------------------------------
 *
 * Portions originally based on Apache Tuscany 2007
 * licensed under the Apache 2.0 license.
 *
 */
package org.fabric3.fabric.executor;

import javax.xml.namespace.QName;

import org.fabric3.api.annotation.monitor.Monitor;
import org.fabric3.fabric.command.StartContextCommand;
import org.fabric3.model.type.component.Scope;
import org.fabric3.spi.channel.ChannelManager;
import org.fabric3.spi.component.ComponentException;
import org.fabric3.spi.component.GroupInitializationException;
import org.fabric3.spi.component.ScopeContainer;
import org.fabric3.spi.component.ScopeRegistry;
import org.fabric3.spi.executor.CommandExecutor;
import org.fabric3.spi.executor.CommandExecutorRegistry;
import org.fabric3.spi.executor.ExecutionException;
import org.fabric3.spi.invocation.WorkContextCache;
import org.oasisopen.sca.annotation.Constructor;
import org.oasisopen.sca.annotation.EagerInit;
import org.oasisopen.sca.annotation.Init;
import org.oasisopen.sca.annotation.Reference;

/**
 * Starts a component context on a runtime.
 */
@EagerInit
public class StartContextCommandExecutor implements CommandExecutor {
    private ScopeContainer compositeScopeContainer;
    private ScopeContainer domainScopeContainer;
    private CommandExecutorRegistry commandExecutorRegistry;
    private ChannelManager channelManager;
    private ContextMonitor monitor;

    @Constructor
    public StartContextCommandExecutor(@Reference CommandExecutorRegistry executorRegistry,
                                       @Reference ScopeRegistry scopeRegistry,
                                       @Reference ChannelManager channelManager,
                                       @Monitor ContextMonitor monitor) {
        this.commandExecutorRegistry = executorRegistry;
        this.channelManager = channelManager;
        this.compositeScopeContainer = scopeRegistry.getScopeContainer(Scope.COMPOSITE);
        this.domainScopeContainer = scopeRegistry.getScopeContainer(Scope.DOMAIN);
        this.monitor = monitor;
    }

    public StartContextCommandExecutor(ScopeRegistry scopeRegistry, @Monitor ContextMonitor monitor) {
        this(null, scopeRegistry, null, monitor);
    }

    @Init
    public void init() {
        commandExecutorRegistry.register(StartContextCommand.class, this);
    }

    public void execute(StartContextCommand command) throws ExecutionException {
        QName deployable = command.getDeployable();
        WorkContextCache.getAndResetThreadWorkContext();
        try {
            compositeScopeContainer.startContext(deployable);
            if (domainScopeContainer != null) {
                // domain scope not available during bootstrap
                domainScopeContainer.startContext(deployable);
            }
        } catch (GroupInitializationException e) {
            throw new ExecutionException(e);
        } catch (ComponentException e) {
            throw new ExecutionException(e);
        }
        if (channelManager != null) {
            channelManager.startContext(deployable);
        }
        if (command.isLog()) {
            monitor.deployed(deployable);
        }
    }

}