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/*
* Copyright (c) 2018 Livio, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 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.
*
* Neither the name of the Livio Inc. nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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 com.smartdevicelink.transport;
import com.smartdevicelink.protocol.SdlPacket;
import com.smartdevicelink.transport.enums.TransportType;
import com.smartdevicelink.transport.utl.TransportRecord;
import com.smartdevicelink.util.DebugTool;
import java.util.Collections;
import java.util.List;
@SuppressWarnings("unused")
public class TransportManager extends TransportManagerBase{
private static final String TAG = "TransportManager";
TransportInterface transport;
/**
* Managing transports
* List for status of all transports
* If transport is not connected. Request Router service connect to it. Get connected message
*/
public TransportManager(BaseTransportConfig config, TransportEventListener listener){
super(config, listener);
//Start the new transport
switch (config.getTransportType()){
case WEB_SOCKET_SERVER:
transport = new WebSocketServer((WebSocketServerConfig)config, new SingleTransportCallbackImpl(new TransportRecord(TransportType.WEB_SOCKET_SERVER,"127.0.0.1:"+((WebSocketServerConfig)config).port)));
break;
case CUSTOM:
transport = ((CustomTransportConfig) config).getTransportInterface();
transport.setCallback(new SingleTransportCallbackImpl(transport.getTransportRecord()));
break;
}
}
@Override
public void start(){
if(transport != null){
transport.start();
}else{
System.out.print("Unable to start transport.");
}
}
@Override
public void close(long sessionId){
if(transport != null) {
transport.stop();
}
}
@Deprecated
@Override
public void resetSession(){
}
/**
* Check to see if a transport is connected.
* @param transportType the transport to have its connection status returned. If `null` is
* passed in, all transports will be checked and if any are connected a
* true value will be returned.
* @param address the address associated with the transport type. If null, the first transport
* of supplied type will be used to return if connected.
* @return if a transport is connected based on included variables
*/
@Override
public boolean isConnected(TransportType transportType, String address){
synchronized (TRANSPORT_STATUS_LOCK) {
if (transportType == null) {
return !transportStatus.isEmpty();
}
for (TransportRecord record : transportStatus) {
if (record.getType().equals(transportType)) {
if (address != null) {
if (address.equals(record.getAddress())) {
return true;
} // Address doesn't match, move forward
} else {
//If no address is included, assume any transport of correct type is acceptable
return true;
}
}
}
return false;
}
}
/**
* Retrieve a transport record with the supplied params
* @param transportType the transport to have its connection status returned.
* @param address the address associated with the transport type. If null, the first transport
* of supplied type will be returned.
* @return the transport record for the transport type and address if supplied
*/
@Override
public TransportRecord getTransportRecord(TransportType transportType, String address){
synchronized (TRANSPORT_STATUS_LOCK) {
if (transportType == null) {
return null;
}
for (TransportRecord record : transportStatus) {
if (record.getType().equals(transportType)) {
if (address != null) {
if (address.equals(record.getAddress())) {
return record;
} // Address doesn't match, move forward
} else {
//If no address is included, assume any transport of correct type is acceptable
return record;
}
}
}
return null;
}
}
@Override
public void sendPacket(SdlPacket packet){
if(transport !=null){
transport.write(packet);
}else {
}
}
class SingleTransportCallbackImpl implements TransportCallback {
final List<TransportRecord> finalList;
final TransportRecord record;
protected SingleTransportCallbackImpl(TransportRecord transportRecord){
record = transportRecord;
finalList = Collections.singletonList(record);
}
@Override
public void onConnectionEstablished() {
synchronized (TRANSPORT_STATUS_LOCK){
transportStatus.clear();
transportStatus.addAll(finalList);
}
transportListener.onTransportConnected(finalList);
}
@Override
public void onError() {
DebugTool.logError(TAG, "Error in the transport manager from the web socket server");
if(transportListener != null){
transportListener.onError("");
}
}
@Override
public void onConnectionTerminated(String reason) {
if(record != null){
DebugTool.logInfo(TAG, "Transport disconnected - " + record);
}else{
DebugTool.logInfo(TAG, "Transport disconnected");
}
synchronized (TRANSPORT_STATUS_LOCK){
TransportManager.this.transportStatus.remove(record);
//Might check connectedTransports vs transportStatus to ensure they are equal
}
//Inform the transport listener that a transport has disconnected
transportListener.onTransportDisconnected(reason, record, Collections.EMPTY_LIST);
}
@Override
public void onPacketReceived(SdlPacket packet) {
if(packet!=null){
transportListener.onPacketReceived(packet);
}
}
}
}
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