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/*
* Copyright 2015 Anton Tananaev (anton.tananaev@gmail.com)
*
* 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 org.traccar;
import org.jboss.netty.channel.Channel;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.handler.codec.oneone.OneToOneEncoder;
import org.traccar.helper.Log;
import org.traccar.model.Command;
public abstract class BaseProtocolEncoder extends OneToOneEncoder {
protected String getUniqueId(long deviceId) {
return Context.getIdentityManager().getDeviceById(deviceId).getUniqueId();
}
@Override
protected Object encode(ChannelHandlerContext ctx, Channel channel, Object msg) throws Exception {
if (msg instanceof Command) {
Command command = (Command) msg;
Object encodedCommand = encodeCommand(command);
// Log command
StringBuilder s = new StringBuilder();
s.append(String.format("[%08X] ", channel.getId()));
s.append("command type: ").append(command.getType()).append(", ");
s.append("id : ").append(command.getDeviceId()).append(" ");
if (encodedCommand != null) {
s.append("sent");
} else {
s.append("not sent");
}
Log.info(s.toString());
return encodedCommand;
}
return msg;
}
protected abstract Object encodeCommand(Command command);
}
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