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/*
* Copyright 2017 - 2020 Anton Tananaev (anton@traccar.org)
* Copyright 2017 Andrey Kunitsyn (andrey@traccar.org)
*
* 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.database;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Queue;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentLinkedQueue;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.traccar.BaseProtocol;
import org.traccar.Context;
import org.traccar.model.Command;
import org.traccar.model.Typed;
import org.traccar.model.Position;
import org.traccar.session.ActiveDevice;
public class CommandsManager extends ExtendedObjectManager<Command> {
private static final Logger LOGGER = LoggerFactory.getLogger(CommandsManager.class);
private final Map<Long, Queue<Command>> deviceQueues = new ConcurrentHashMap<>();
private final boolean queueing;
public CommandsManager(DataManager dataManager, boolean queueing) {
super(dataManager, Command.class);
this.queueing = queueing;
}
public boolean checkDeviceCommand(long deviceId, long commandId) {
return !getAllDeviceItems(deviceId).contains(commandId);
}
public boolean sendCommand(Command command) throws Exception {
long deviceId = command.getDeviceId();
if (command.getId() != 0) {
command = getById(command.getId()).clone();
command.setDeviceId(deviceId);
}
if (command.getTextChannel()) {
Position lastPosition = Context.getIdentityManager().getLastPosition(deviceId);
String phone = Context.getIdentityManager().getById(deviceId).getPhone();
if (lastPosition != null) {
BaseProtocol protocol = Context.getServerManager().getProtocol(lastPosition.getProtocol());
protocol.sendTextCommand(phone, command);
} else if (command.getType().equals(Command.TYPE_CUSTOM)) {
if (Context.getSmsManager() != null) {
Context.getSmsManager().sendMessageSync(phone, command.getString(Command.KEY_DATA), true);
} else {
throw new RuntimeException("SMS is not enabled");
}
} else {
throw new RuntimeException("Command " + command.getType() + " is not supported");
}
} else {
ActiveDevice activeDevice = Context.getConnectionManager().getActiveDevice(deviceId);
if (activeDevice != null) {
if (activeDevice.supportsLiveCommands()) {
activeDevice.sendCommand(command);
} else {
getDeviceQueue(deviceId).add(command);
return false;
}
} else if (!queueing) {
throw new RuntimeException("Device is not online");
} else {
getDeviceQueue(deviceId).add(command);
return false;
}
}
return true;
}
public Collection<Long> getSupportedCommands(long deviceId) {
List<Long> result = new ArrayList<>();
Position lastPosition = Context.getIdentityManager().getLastPosition(deviceId);
for (long commandId : getAllDeviceItems(deviceId)) {
Command command = getById(commandId);
if (lastPosition != null) {
BaseProtocol protocol = Context.getServerManager().getProtocol(lastPosition.getProtocol());
if (command.getTextChannel() && protocol.getSupportedTextCommands().contains(command.getType())
|| !command.getTextChannel()
&& protocol.getSupportedDataCommands().contains(command.getType())) {
result.add(commandId);
}
} else if (command.getType().equals(Command.TYPE_CUSTOM)) {
result.add(commandId);
}
}
return result;
}
public Collection<Typed> getCommandTypes(long deviceId, boolean textChannel) {
Position lastPosition = Context.getIdentityManager().getLastPosition(deviceId);
if (lastPosition != null) {
return getCommandTypes(lastPosition.getProtocol(), textChannel);
} else {
return Collections.singletonList(new Typed(Command.TYPE_CUSTOM));
}
}
public Collection<Typed> getCommandTypes(String protocolName, boolean textChannel) {
List<Typed> result = new ArrayList<>();
BaseProtocol protocol = Context.getServerManager().getProtocol(protocolName);
Collection<String> commands;
commands = textChannel ? protocol.getSupportedTextCommands() : protocol.getSupportedDataCommands();
for (String commandKey : commands) {
result.add(new Typed(commandKey));
}
return result;
}
public Collection<Typed> getAllCommandTypes() {
List<Typed> result = new ArrayList<>();
Field[] fields = Command.class.getDeclaredFields();
for (Field field : fields) {
if (Modifier.isStatic(field.getModifiers()) && field.getName().startsWith("TYPE_")) {
try {
result.add(new Typed(field.get(null).toString()));
} catch (IllegalArgumentException | IllegalAccessException error) {
LOGGER.warn("Get command types error", error);
}
}
}
return result;
}
private Queue<Command> getDeviceQueue(long deviceId) {
Queue<Command> deviceQueue;
try {
readLock();
deviceQueue = deviceQueues.get(deviceId);
} finally {
readUnlock();
}
if (deviceQueue != null) {
return deviceQueue;
} else {
try {
writeLock();
return deviceQueues.computeIfAbsent(deviceId, key -> new ConcurrentLinkedQueue<>());
} finally {
writeUnlock();
}
}
}
public Collection<Command> readQueuedCommands(long deviceId) {
return readQueuedCommands(deviceId, Integer.MAX_VALUE);
}
public Collection<Command> readQueuedCommands(long deviceId, int count) {
Queue<Command> deviceQueue;
try {
readLock();
deviceQueue = deviceQueues.get(deviceId);
} finally {
readUnlock();
}
Collection<Command> result = new ArrayList<>();
if (deviceQueue != null) {
Command command = deviceQueue.poll();
while (command != null && result.size() < count) {
result.add(command);
command = deviceQueue.poll();
}
}
return result;
}
}
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