/* * Copyright 2015 - 2016 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.buffer.ChannelBuffers; import org.jboss.netty.handler.codec.string.StringEncoder; import org.traccar.database.ActiveDevice; import org.traccar.model.Command; import javax.xml.bind.DatatypeConverter; import java.util.Arrays; import java.util.Collection; import java.util.HashSet; import java.util.Set; public abstract class BaseProtocol implements Protocol { private final String name; private final Set<String> supportedCommands = new HashSet<>(); public BaseProtocol(String name) { this.name = name; } @Override public String getName() { return name; } public void setSupportedCommands(String... commands) { supportedCommands.addAll(Arrays.asList(commands)); } @Override public Collection<String> getSupportedCommands() { Set<String> commands = new HashSet<>(supportedCommands); commands.add(Command.TYPE_CUSTOM); return commands; } @Override public void sendCommand(ActiveDevice activeDevice, Command command) { if (supportedCommands.contains(command.getType())) { activeDevice.write(command); } else if (command.getType().equals(Command.TYPE_CUSTOM)) { String data = (String) command.getAttributes().get(Command.KEY_DATA); if (activeDevice.getChannel().getPipeline().get(StringEncoder.class) != null) { activeDevice.write(data); } else { activeDevice.write(ChannelBuffers.wrappedBuffer(DatatypeConverter.parseHexBinary(data))); } } else { throw new RuntimeException("Command " + command.getType() + " is not supported in protocol " + getName()); } } }