TrustNodeMgr.java

/**
 * Copyright (c) 2011, SOCIETIES Consortium (WATERFORD INSTITUTE OF TECHNOLOGY (TSSG), HERIOT-WATT UNIVERSITY (HWU), SOLUTA.NET 
 * (SN), GERMAN AEROSPACE CENTRE (Deutsches Zentrum fuer Luft- und Raumfahrt e.V.) (DLR), Zavod za varnostne tehnologije
 * informacijske družbe in elektronsko poslovanje (SETCCE), INSTITUTE OF COMMUNICATION AND COMPUTER SYSTEMS (ICCS), LAKE
 * COMMUNICATIONS (LAKE), INTEL PERFORMANCE LEARNING SOLUTIONS LTD (INTEL), PORTUGAL TELECOM INOVAÇÃO, SA (PTIN), IBM Corp., 
 * INSTITUT TELECOM (ITSUD), AMITEC DIACHYTI EFYIA PLIROFORIKI KAI EPIKINONIES ETERIA PERIORISMENIS EFTHINIS (AMITEC), TELECOM 
 * ITALIA S.p.a.(TI),  TRIALOG (TRIALOG), Stiftelsen SINTEF (SINTEF), NEC EUROPE LTD (NEC))
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following
 * conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
 *    disclaimer in the documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 
 * SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.societies.privacytrust.trust.impl;

import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.societies.api.comm.xmpp.interfaces.ICommManager;
import org.societies.api.identity.IIdentity;
import org.societies.api.identity.INetworkNode;
import org.societies.api.identity.InvalidFormatException;
import org.societies.api.identity.Requestor;
import org.societies.api.privacytrust.trust.model.MalformedTrustedEntityIdException;
import org.societies.api.privacytrust.trust.model.TrustedEntityId;
import org.societies.api.privacytrust.trust.model.util.TrustedEntityIdFactory;
import org.societies.privacytrust.trust.api.ITrustNodeMgr;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/**
 * Describe your class here...
 *
 * @author <a href="mailto:nicolas.liampotis@cn.ntua.gr">Nicolas Liampotis</a> (ICCS)
 * @since 0.4.1
 */
@Service
public class TrustNodeMgr implements ITrustNodeMgr {

	private static final Logger LOG = LoggerFactory.getLogger(TrustNodeMgr.class);
	
	/** The Comms Mgr service reference. */
	@Autowired(required=true)
	private ICommManager commMgr;
	
	TrustNodeMgr() {
		
		LOG.info("{} instantiated", this.getClass());
	}
	
	/*
	 * @see org.societies.privacytrust.trust.api.ITrustNodeMgr#getMyIds()
	 */
	@Override
	public Collection<TrustedEntityId> getMyIds() {
		
		final Set<IIdentity> publicIds = this.commMgr.getIdManager().getPublicIdentities();
		final Set<TrustedEntityId> result = new HashSet<TrustedEntityId>(publicIds.size());
		for (final IIdentity publicId : publicIds) {
			try {
				result.add(TrustedEntityIdFactory.fromIIdentity(publicId));
			} catch (MalformedTrustedEntityIdException mteide) {
				LOG.error("Could not create trusted entity id: " 
						+ mteide.getLocalizedMessage(), mteide);
			}
		}
		
		return Collections.unmodifiableCollection(result);
	}
	
	/*
	 * @see org.societies.privacytrust.trust.api.ITrustNodeMgr#getLocalIdentity()
	 */
	@Override
	public IIdentity getLocalIdentity() {
		
		return this.commMgr.getIdManager().getCloudNode();
	}
	
	/*
	 * @see org.societies.privacytrust.trust.api.ITrustNodeMgr#getLocalRequestor()
	 */
	@Override
	public Requestor getLocalRequestor() {
		
		return new Requestor(this.getLocalIdentity());
	}
	
	/*
	 * @see org.societies.privacytrust.trust.api.ITrustNodeMgr#isMaster()
	 */
	@Override
	public boolean isMaster() {

		final INetworkNode localNode = this.commMgr.getIdManager().getThisNetworkNode();
		final INetworkNode cloudNode = this.commMgr.getIdManager().getCloudNode();
		return localNode.equals(cloudNode);
	}
	
	/*
	 * @see org.societies.privacytrust.trust.api.ITrustNodeMgr#fromId(org.societies.api.privacytrust.trust.model.TrustedEntityId)
	 */
	@Override
	public IIdentity fromId(final TrustedEntityId teid) {
		
		if (teid == null) {
			throw new NullPointerException("teid can't be null");
		}
		
		try {
			return this.commMgr.getIdManager().fromJid(teid.getEntityId());
		} catch (InvalidFormatException ife) {
			throw new IllegalArgumentException("Invalid TrustedEntityId '" 
					+ teid + "': " + ife.getLocalizedMessage(), ife);
		}
	}
}