2 * Copyright (c) 2010-2020 Contributors to the openHAB project
4 * See the NOTICE file(s) distributed with this work for additional
7 * This program and the accompanying materials are made available under the
8 * terms of the Eclipse Public License 2.0 which is available at
9 * http://www.eclipse.org/legal/epl-2.0
11 * SPDX-License-Identifier: EPL-2.0
13 package org.openhab.binding.neeo.internal.handler;
15 import java.io.IOException;
16 import java.net.InetSocketAddress;
17 import java.net.MalformedURLException;
18 import java.net.Socket;
20 import java.util.HashMap;
21 import java.util.Hashtable;
23 import java.util.Objects;
24 import java.util.concurrent.Future;
25 import java.util.concurrent.TimeUnit;
26 import java.util.concurrent.atomic.AtomicReference;
27 import java.util.concurrent.locks.Lock;
28 import java.util.concurrent.locks.ReadWriteLock;
29 import java.util.concurrent.locks.ReentrantReadWriteLock;
31 import javax.servlet.ServletException;
33 import org.apache.commons.lang.StringUtils;
34 import org.eclipse.jdt.annotation.NonNullByDefault;
35 import org.eclipse.jdt.annotation.Nullable;
36 import org.openhab.binding.neeo.internal.NeeoBrainApi;
37 import org.openhab.binding.neeo.internal.NeeoBrainConfig;
38 import org.openhab.binding.neeo.internal.NeeoConstants;
39 import org.openhab.binding.neeo.internal.NeeoUtil;
40 import org.openhab.binding.neeo.internal.models.NeeoAction;
41 import org.openhab.binding.neeo.internal.models.NeeoBrain;
42 import org.openhab.core.net.NetworkAddressService;
43 import org.openhab.core.thing.Bridge;
44 import org.openhab.core.thing.ChannelUID;
45 import org.openhab.core.thing.Thing;
46 import org.openhab.core.thing.ThingStatus;
47 import org.openhab.core.thing.ThingStatusDetail;
48 import org.openhab.core.thing.binding.BaseBridgeHandler;
49 import org.openhab.core.thing.binding.ThingHandler;
50 import org.openhab.core.types.Command;
51 import org.osgi.service.http.HttpService;
52 import org.osgi.service.http.NamespaceException;
53 import org.slf4j.Logger;
54 import org.slf4j.LoggerFactory;
56 import com.google.gson.Gson;
59 * A subclass of {@link BaseBridgeHandler} is responsible for handling commands and discovery for a
62 * @author Tim Roberts - Initial contribution
65 public class NeeoBrainHandler extends BaseBridgeHandler {
68 private final Logger logger = LoggerFactory.getLogger(NeeoBrainHandler.class);
70 /** The {@link HttpService} to register callbacks */
71 private final HttpService httpService;
73 /** The {@link NetworkAddressService} to use */
74 private final NetworkAddressService networkAddressService;
76 /** GSON implementation - only used to deserialize {@link NeeoAction} */
77 private final Gson gson = new Gson();
79 /** The port the HTTP service is listening on */
80 private final int servicePort;
83 * The initialization task (null until set by {@link #initializeTask()} and set back to null in {@link #dispose()}
85 private final AtomicReference<@Nullable Future<?>> initializationTask = new AtomicReference<>();
87 /** The check status task (not-null when connecting, null otherwise) */
88 private final AtomicReference<@Nullable Future<?>> checkStatus = new AtomicReference<>();
90 /** The lock that protected multi-threaded access to the state variables */
91 private final ReadWriteLock stateLock = new ReentrantReadWriteLock();
93 /** The {@link NeeoBrainApi} (null until set by {@link #initializationTask}) */
95 private NeeoBrainApi neeoBrainApi;
97 /** The path to the forward action servlet - will be null if not enabled */
99 private String servletPath;
101 /** The servlet for forward actions - will be null if not enabled */
103 private NeeoForwardActionsServlet forwardActionServlet;
106 * Instantiates a new neeo brain handler from the {@link Bridge}, service port, {@link HttpService} and
107 * {@link NetworkAddressService}.
109 * @param bridge the non-null {@link Bridge}
110 * @param servicePort the service port the http service is listening on
111 * @param httpService the non-null {@link HttpService}
112 * @param networkAddressService the non-null {@link NetworkAddressService}
114 NeeoBrainHandler(Bridge bridge, int servicePort, HttpService httpService,
115 NetworkAddressService networkAddressService) {
118 Objects.requireNonNull(bridge, "bridge cannot be null");
119 Objects.requireNonNull(httpService, "httpService cannot be null");
120 Objects.requireNonNull(networkAddressService, "networkAddressService cannot be null");
122 this.servicePort = servicePort;
123 this.httpService = httpService;
124 this.networkAddressService = networkAddressService;
128 * Handles any {@Commands} sent - this bridge has no commands and does nothing
131 * org.openhab.core.thing.binding.ThingHandler#handleCommand(org.openhab.core.thing.ChannelUID,
132 * org.openhab.core.types.Command)
135 public void handleCommand(ChannelUID channelUID, Command command) {
139 * Simply cancels any existing initialization tasks and schedules a new task
141 * @see org.openhab.core.thing.binding.BaseThingHandler#initialize()
144 public void initialize() {
145 NeeoUtil.cancel(initializationTask.getAndSet(scheduler.submit(() -> {
151 * Initializes the bridge by connecting to the configuration ip address and parsing the results. Properties will be
152 * set and the thing will go online.
154 private void initializeTask() {
155 final Lock writerLock = stateLock.writeLock();
158 NeeoUtil.checkInterrupt();
160 final NeeoBrainConfig config = getBrainConfig();
161 final String ipAddress = config.getIpAddress();
162 if (ipAddress == null || StringUtils.isEmpty(ipAddress)) {
163 updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR,
164 "Brain IP Address must be specified");
167 final NeeoBrainApi api = new NeeoBrainApi(ipAddress);
168 final NeeoBrain brain = api.getBrain();
169 final String brainId = getNeeoBrainId();
171 NeeoUtil.checkInterrupt();
174 final Map<String, String> properties = new HashMap<>();
175 addProperty(properties, "Name", brain.getName());
176 addProperty(properties, "Version", brain.getVersion());
177 addProperty(properties, "Label", brain.getLabel());
178 addProperty(properties, "Is Configured", String.valueOf(brain.isConfigured()));
179 addProperty(properties, "Key", brain.getKey());
180 addProperty(properties, "AirKey", brain.getAirkey());
181 addProperty(properties, "Last Change", String.valueOf(brain.getLastChange()));
182 updateProperties(properties);
184 if (config.isEnableForwardActions()) {
185 NeeoUtil.checkInterrupt();
187 forwardActionServlet = new NeeoForwardActionsServlet(scheduler,
188 new NeeoForwardActionsServlet.Callback() {
190 public void post(String json) {
191 triggerChannel(NeeoConstants.CHANNEL_BRAIN_FOWARDACTIONS, json);
193 final NeeoAction action = Objects.requireNonNull(gson.fromJson(json, NeeoAction.class));
195 for (final Thing child : getThing().getThings()) {
196 final ThingHandler th = child.getHandler();
197 if (th instanceof NeeoRoomHandler) {
198 ((NeeoRoomHandler) th).processAction(action);
202 }, config.getForwardChain());
204 NeeoUtil.checkInterrupt();
206 servletPath = NeeoConstants.WEBAPP_FORWARDACTIONS.replace("{brainid}", brainId);
208 httpService.registerServlet(servletPath, forwardActionServlet, new Hashtable<>(),
209 httpService.createDefaultHttpContext());
211 final URL callbackURL = createCallbackUrl(brainId, config);
212 if (callbackURL == null) {
214 "Unable to create a callback URL because there is no primary address specified (please set the primary address in the configuration)");
216 final URL url = new URL(callbackURL, servletPath);
217 api.registerForwardActions(url);
219 } catch (NamespaceException | ServletException e) {
220 logger.debug("Error registering forward actions to {}: {}", servletPath, e.getMessage(), e);
224 NeeoUtil.checkInterrupt();
225 updateStatus(ThingStatus.ONLINE);
226 NeeoUtil.checkInterrupt();
227 if (config.getCheckStatusInterval() > 0) {
228 NeeoUtil.cancel(checkStatus.getAndSet(scheduler.scheduleWithFixedDelay(() -> {
230 NeeoUtil.checkInterrupt();
231 checkStatus(ipAddress);
232 } catch (InterruptedException e) {
233 // do nothing - we were interrupted and should stop
235 }, config.getCheckStatusInterval(), config.getCheckStatusInterval(), TimeUnit.SECONDS)));
237 } catch (IOException e) {
238 logger.debug("Exception occurred connecting to brain: {}", e.getMessage(), e);
239 updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR,
240 "Exception occurred connecting to brain: " + e.getMessage());
241 } catch (InterruptedException e) {
242 logger.debug("Initializtion was interrupted", e);
243 updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.HANDLER_INITIALIZING_ERROR,
244 "Initialization was interrupted");
251 * Helper method to add a property to the properties map if the value is not null
253 * @param properties a non-null properties map
254 * @param key a non-null, non-empty key
255 * @param value a possibly null, possibly empty key
257 private void addProperty(Map<String, String> properties, String key, @Nullable String value) {
258 Objects.requireNonNull(properties, "properties cannot be null");
259 NeeoUtil.requireNotEmpty(key, "key cannot be empty");
260 if (value != null && StringUtils.isNotEmpty(value)) {
261 properties.put(key, value);
266 * Gets the {@link NeeoBrainApi} used by this bridge
268 * @return a possibly null {@link NeeoBrainApi}
271 public NeeoBrainApi getNeeoBrainApi() {
272 final Lock readerLock = stateLock.readLock();
282 * Gets the brain id used by this bridge
284 * @return a non-null, non-empty brain id
286 public String getNeeoBrainId() {
287 return getThing().getUID().getId();
291 * Helper method to get the {@link NeeoBrainConfig}
293 * @return the {@link NeeoBrainConfig}
295 private NeeoBrainConfig getBrainConfig() {
296 return getConfigAs(NeeoBrainConfig.class);
300 * Checks the status of the brain via a quick socket connection. If the status is unavailable and we are
301 * {@link ThingStatus#ONLINE}, then we go {@link ThingStatus#OFFLINE}. If the status is available and we are
302 * {@link ThingStatus#OFFLINE}, we go {@link ThingStatus#ONLINE}.
304 * @param ipAddress a non-null, non-empty IP address
306 private void checkStatus(String ipAddress) {
307 NeeoUtil.requireNotEmpty(ipAddress, "ipAddress cannot be empty");
310 try (Socket soc = new Socket()) {
311 soc.connect(new InetSocketAddress(ipAddress, NeeoConstants.DEFAULT_BRAIN_PORT), 5000);
313 logger.debug("Checking connectivity to {}:{} - successful", ipAddress, NeeoConstants.DEFAULT_BRAIN_PORT);
315 if (getThing().getStatus() != ThingStatus.ONLINE) {
316 updateStatus(ThingStatus.ONLINE);
318 } catch (IOException e) {
319 if (getThing().getStatus() == ThingStatus.ONLINE) {
320 logger.debug("Checking connectivity to {}:{} - unsuccessful - going offline: {}", ipAddress,
321 NeeoConstants.DEFAULT_BRAIN_PORT, e.getMessage(), e);
322 updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR,
323 "Exception occurred connecting to brain: " + e.getMessage());
325 logger.debug("Checking connectivity to {}:{} - unsuccessful - still offline", ipAddress,
326 NeeoConstants.DEFAULT_BRAIN_PORT);
332 * Disposes of the bridge by closing/removing the {@link #neeoBrainApi} and canceling/removing any pending
333 * {@link #initializeTask()}
336 public void dispose() {
337 final Lock writerLock = stateLock.writeLock();
340 final NeeoBrainApi api = neeoBrainApi;
343 NeeoUtil.cancel(initializationTask.getAndSet(null));
344 NeeoUtil.cancel(checkStatus.getAndSet(null));
346 if (forwardActionServlet != null) {
347 forwardActionServlet = null;
351 api.deregisterForwardActions();
352 } catch (IOException e) {
353 logger.debug("IOException occurred deregistering the forward actions: {}", e.getMessage(), e);
357 if (servletPath != null) {
358 httpService.unregister(servletPath);
370 * Creates the URL the brain should callback. Note: if there is multiple interfaces, we try to prefer the one on the
371 * same subnet as the brain
373 * @param brainId the non-null, non-empty brain identifier
374 * @param config the non-null brain configuration
375 * @return the callback URL
376 * @throws MalformedURLException if the URL is malformed
379 private URL createCallbackUrl(String brainId, NeeoBrainConfig config) throws MalformedURLException {
380 NeeoUtil.requireNotEmpty(brainId, "brainId cannot be empty");
381 Objects.requireNonNull(config, "config cannot be null");
383 final String ipAddress = networkAddressService.getPrimaryIpv4HostAddress();
384 if (ipAddress == null) {
385 logger.debug("No network interface could be found.");
389 return new URL("http://" + ipAddress + ":" + servicePort);