git.basschouten.com Git - openhab-addons.git/blob

   1 /**
   2  * Copyright (c) 2010-2021 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   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
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.somfytahoma.internal.handler;
  14
  15 import static org.openhab.binding.somfytahoma.internal.SomfyTahomaBindingConstants.*;
  16
  17 import java.io.UnsupportedEncodingException;
  18 import java.net.URLEncoder;
  19 import java.nio.charset.StandardCharsets;
  20 import java.time.Duration;
  21 import java.util.Collection;
  22 import java.util.Collections;
  23 import java.util.HashMap;
  24 import java.util.List;
  25 import java.util.Map;
  26 import java.util.concurrent.ConcurrentLinkedQueue;
  27 import java.util.concurrent.ExecutionException;
  28 import java.util.concurrent.ScheduledFuture;
  29 import java.util.concurrent.TimeUnit;
  30 import java.util.concurrent.TimeoutException;
  31
  32 import org.eclipse.jdt.annotation.NonNullByDefault;
  33 import org.eclipse.jdt.annotation.Nullable;
  34 import org.eclipse.jetty.client.HttpClient;
  35 import org.eclipse.jetty.client.api.ContentResponse;
  36 import org.eclipse.jetty.client.api.Request;
  37 import org.eclipse.jetty.client.util.StringContentProvider;
  38 import org.eclipse.jetty.http.HttpHeader;
  39 import org.eclipse.jetty.http.HttpMethod;
  40 import org.openhab.binding.somfytahoma.internal.config.SomfyTahomaConfig;
  41 import org.openhab.binding.somfytahoma.internal.discovery.SomfyTahomaItemDiscoveryService;
  42 import org.openhab.binding.somfytahoma.internal.model.SomfyTahomaAction;
  43 import org.openhab.binding.somfytahoma.internal.model.SomfyTahomaActionGroup;
  44 import org.openhab.binding.somfytahoma.internal.model.SomfyTahomaApplyResponse;
  45 import org.openhab.binding.somfytahoma.internal.model.SomfyTahomaDevice;
  46 import org.openhab.binding.somfytahoma.internal.model.SomfyTahomaEvent;
  47 import org.openhab.binding.somfytahoma.internal.model.SomfyTahomaLoginResponse;
  48 import org.openhab.binding.somfytahoma.internal.model.SomfyTahomaRegisterEventsResponse;
  49 import org.openhab.binding.somfytahoma.internal.model.SomfyTahomaSetup;
  50 import org.openhab.binding.somfytahoma.internal.model.SomfyTahomaState;
  51 import org.openhab.binding.somfytahoma.internal.model.SomfyTahomaStatus;
  52 import org.openhab.binding.somfytahoma.internal.model.SomfyTahomaStatusResponse;
  53 import org.openhab.core.cache.ExpiringCache;
  54 import org.openhab.core.io.net.http.HttpClientFactory;
  55 import org.openhab.core.thing.Bridge;
  56 import org.openhab.core.thing.ChannelUID;
  57 import org.openhab.core.thing.Thing;
  58 import org.openhab.core.thing.ThingStatus;
  59 import org.openhab.core.thing.ThingStatusDetail;
  60 import org.openhab.core.thing.ThingStatusInfo;
  61 import org.openhab.core.thing.binding.BaseBridgeHandler;
  62 import org.openhab.core.thing.binding.ThingHandlerService;
  63 import org.openhab.core.types.Command;
  64 import org.slf4j.Logger;
  65 import org.slf4j.LoggerFactory;
  66
  67 import com.google.gson.Gson;
  68 import com.google.gson.JsonElement;
  69 import com.google.gson.JsonSyntaxException;
  70
  71 /**
  72  * The {@link SomfyTahomaBridgeHandler} is responsible for handling commands, which are
  73  * sent to one of the channels.
  74  *
  75  * @author Ondrej Pecta - Initial contribution
  76  */
  77 @NonNullByDefault
  78 public class SomfyTahomaBridgeHandler extends BaseBridgeHandler {
  79
  80     private final Logger logger = LoggerFactory.getLogger(SomfyTahomaBridgeHandler.class);
  81
  82     /**
  83      * The shared HttpClient
  84      */
  85     private final HttpClient httpClient;
  86
  87     /**
  88      * Future to poll for updates
  89      */
  90     private @Nullable ScheduledFuture<?> pollFuture;
  91
  92     /**
  93      * Future to poll for status
  94      */
  95     private @Nullable ScheduledFuture<?> statusFuture;
  96
  97     /**
  98      * Future to set reconciliation flag
  99      */
 100     private @Nullable ScheduledFuture<?> reconciliationFuture;
 101
 102     // List of futures used for command retries
 103     private Collection<ScheduledFuture<?>> retryFutures = new ConcurrentLinkedQueue<ScheduledFuture<?>>();
 104
 105     /**
 106      * List of executions
 107      */
 108     private Map<String, String> executions = new HashMap<>();
 109
 110     // Too many requests flag
 111     private boolean tooManyRequests = false;
 112
 113     // Silent relogin flag
 114     private boolean reLoginNeeded = false;
 115
 116     // Reconciliation flag
 117     private boolean reconciliation = false;
 118
 119     /**
 120      * Our configuration
 121      */
 122     protected SomfyTahomaConfig thingConfig = new SomfyTahomaConfig();
 123
 124     /**
 125      * Id of registered events
 126      */
 127     private String eventsId = "";
 128
 129     private Map<String, SomfyTahomaDevice> devicePlaces = new HashMap<>();
 130
 131     private ExpiringCache<List<SomfyTahomaDevice>> cachedDevices = new ExpiringCache<>(Duration.ofSeconds(30),
 132             this::getDevices);
 133
 134     // Gson & parser
 135     private final Gson gson = new Gson();
 136
 137     public SomfyTahomaBridgeHandler(Bridge thing, HttpClientFactory httpClientFactory) {
 138         super(thing);
 139         this.httpClient = httpClientFactory.createHttpClient("somfy_" + thing.getUID().getId());
 140     }
 141
 142     @Override
 143     public void handleCommand(ChannelUID channelUID, Command command) {
 144     }
 145
 146     @Override
 147     public void initialize() {
 148         thingConfig = getConfigAs(SomfyTahomaConfig.class);
 149
 150         try {
 151             httpClient.start();
 152         } catch (Exception e) {
 153             logger.debug("Cannot start http client for: {}", thing.getBridgeUID().getId(), e);
 154             return;
 155         }
 156
 157         scheduler.execute(() -> {
 158             login();
 159             initPolling();
 160             logger.debug("Initialize done...");
 161         });
 162     }
 163
 164     /**
 165      * starts this things polling future
 166      */
 167     private void initPolling() {
 168         stopPolling();
 169         scheduleGetUpdates(10);
 170
 171         statusFuture = scheduler.scheduleWithFixedDelay(() -> {
 172             refreshTahomaStates();
 173         }, 60, thingConfig.getStatusTimeout(), TimeUnit.SECONDS);
 174
 175         reconciliationFuture = scheduler.scheduleWithFixedDelay(() -> {
 176             enableReconciliation();
 177         }, RECONCILIATION_TIME, RECONCILIATION_TIME, TimeUnit.SECONDS);
 178     }
 179
 180     private void scheduleGetUpdates(long delay) {
 181         pollFuture = scheduler.schedule(() -> {
 182             getTahomaUpdates();
 183             scheduleNextGetUpdates();
 184         }, delay, TimeUnit.SECONDS);
 185     }
 186
 187     private void scheduleNextGetUpdates() {
 188         ScheduledFuture<?> localPollFuture = pollFuture;
 189         if (localPollFuture != null) {
 190             localPollFuture.cancel(false);
 191         }
 192         scheduleGetUpdates(executions.isEmpty() ? thingConfig.getRefresh() : 2);
 193     }
 194
 195     public synchronized void login() {
 196         String url;
 197
 198         if (thingConfig.getEmail().isEmpty() || thingConfig.getPassword().isEmpty()) {
 199             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR,
 200                     "Can not access device as username and/or password are null");
 201             return;
 202         }
 203
 204         if (tooManyRequests) {
 205             logger.debug("Skipping login due to too many requests");
 206             return;
 207         }
 208
 209         if (ThingStatus.ONLINE == thing.getStatus() && !reLoginNeeded) {
 210             logger.debug("No need to log in, because already logged in");
 211             return;
 212         }
 213
 214         reLoginNeeded = false;
 215
 216         try {
 217             url = TAHOMA_API_URL + "login";
 218             String urlParameters = "userId=" + urlEncode(thingConfig.getEmail()) + "&userPassword="
 219                     + urlEncode(thingConfig.getPassword());
 220
 221             ContentResponse response = sendRequestBuilder(url, HttpMethod.POST)
 222                     .content(new StringContentProvider(urlParameters),
 223                             "application/x-www-form-urlencoded; charset=UTF-8")
 224                     .send();
 225
 226             if (logger.isTraceEnabled()) {
 227                 logger.trace("Login response: {}", response.getContentAsString());
 228             }
 229
 230             SomfyTahomaLoginResponse data = gson.fromJson(response.getContentAsString(),
 231                     SomfyTahomaLoginResponse.class);
 232             if (data == null) {
 233                 updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR,
 234                         "Received invalid data (login)");
 235             } else if (data.isSuccess()) {
 236                 logger.debug("SomfyTahoma version: {}", data.getVersion());
 237                 String id = registerEvents();
 238                 if (id != null && !id.equals(UNAUTHORIZED)) {
 239                     eventsId = id;
 240                     logger.debug("Events id: {}", eventsId);
 241                     updateStatus(ThingStatus.ONLINE);
 242                 } else {
 243                     logger.debug("Events id error: {}", id);
 244                 }
 245             } else {
 246                 updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR,
 247                         "Error logging in: " + data.getError());
 248                 if (data.getError().startsWith(TOO_MANY_REQUESTS)) {
 249                     setTooManyRequests();
 250                 }
 251             }
 252         } catch (JsonSyntaxException e) {
 253             logger.debug("Received invalid data (login)", e);
 254             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, "Received invalid data (login)");
 255         } catch (ExecutionException e) {
 256             if (isAuthenticationChallenge(e)) {
 257                 updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, "Authentication challenge");
 258                 setTooManyRequests();
 259             } else {
 260                 logger.debug("Cannot get login cookie", e);
 261                 updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, "Cannot get login cookie");
 262             }
 263         } catch (TimeoutException e) {
 264             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, "Getting login cookie timeout");
 265         } catch (InterruptedException e) {
 266             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR,
 267                     "Getting login cookie interrupted");
 268             Thread.currentThread().interrupt();
 269         }
 270     }
 271
 272     private void setTooManyRequests() {
 273         logger.debug("Too many requests error, suspending activity for {} seconds", SUSPEND_TIME);
 274         tooManyRequests = true;
 275         scheduler.schedule(this::enableLogin, SUSPEND_TIME, TimeUnit.SECONDS);
 276     }
 277
 278     private @Nullable String registerEvents() {
 279         SomfyTahomaRegisterEventsResponse response = invokeCallToURL(TAHOMA_EVENTS_URL + "register", "",
 280                 HttpMethod.POST, SomfyTahomaRegisterEventsResponse.class);
 281         return response != null ? response.getId() : null;
 282     }
 283
 284     private String urlEncode(String text) {
 285         try {
 286             return URLEncoder.encode(text, StandardCharsets.UTF_8.toString());
 287         } catch (UnsupportedEncodingException e) {
 288             return text;
 289         }
 290     }
 291
 292     private void enableLogin() {
 293         tooManyRequests = false;
 294     }
 295
 296     private List<SomfyTahomaEvent> getEvents() {
 297         SomfyTahomaEvent[] response = invokeCallToURL(TAHOMA_API_URL + "events/" + eventsId + "/fetch", "",
 298                 HttpMethod.POST, SomfyTahomaEvent[].class);
 299         return response != null ? List.of(response) : List.of();
 300     }
 301
 302     @Override
 303     public void handleRemoval() {
 304         super.handleRemoval();
 305         logout();
 306     }
 307
 308     @Override
 309     public Collection<Class<? extends ThingHandlerService>> getServices() {
 310         return Collections.singleton(SomfyTahomaItemDiscoveryService.class);
 311     }
 312
 313     @Override
 314     public void dispose() {
 315         cleanup();
 316         super.dispose();
 317     }
 318
 319     private void cleanup() {
 320         logger.debug("Doing cleanup");
 321         stopPolling();
 322         executions.clear();
 323         // cancel all scheduled retries
 324         retryFutures.forEach(x -> x.cancel(false));
 325
 326         try {
 327             httpClient.stop();
 328         } catch (Exception e) {
 329             logger.debug("Error during http client stopping", e);
 330         }
 331     }
 332
 333     @Override
 334     public void bridgeStatusChanged(ThingStatusInfo bridgeStatusInfo) {
 335         super.bridgeStatusChanged(bridgeStatusInfo);
 336         if (ThingStatus.UNINITIALIZED == bridgeStatusInfo.getStatus()) {
 337             cleanup();
 338         }
 339     }
 340
 341     /**
 342      * Stops this thing's polling future
 343      */
 344     private void stopPolling() {
 345         ScheduledFuture<?> localPollFuture = pollFuture;
 346         if (localPollFuture != null && !localPollFuture.isCancelled()) {
 347             localPollFuture.cancel(true);
 348         }
 349         ScheduledFuture<?> localStatusFuture = statusFuture;
 350         if (localStatusFuture != null && !localStatusFuture.isCancelled()) {
 351             localStatusFuture.cancel(true);
 352         }
 353         ScheduledFuture<?> localReconciliationFuture = reconciliationFuture;
 354         if (localReconciliationFuture != null && !localReconciliationFuture.isCancelled()) {
 355             localReconciliationFuture.cancel(true);
 356         }
 357     }
 358
 359     public List<SomfyTahomaActionGroup> listActionGroups() {
 360         SomfyTahomaActionGroup[] list = invokeCallToURL(TAHOMA_API_URL + "actionGroups", "", HttpMethod.GET,
 361                 SomfyTahomaActionGroup[].class);
 362         return list != null ? List.of(list) : List.of();
 363     }
 364
 365     public @Nullable SomfyTahomaSetup getSetup() {
 366         SomfyTahomaSetup setup = invokeCallToURL(TAHOMA_API_URL + "setup", "", HttpMethod.GET, SomfyTahomaSetup.class);
 367         if (setup != null) {
 368             saveDevicePlaces(setup.getDevices());
 369         }
 370         return setup;
 371     }
 372
 373     public List<SomfyTahomaDevice> getDevices() {
 374         SomfyTahomaDevice[] response = invokeCallToURL(SETUP_URL + "devices", "", HttpMethod.GET,
 375                 SomfyTahomaDevice[].class);
 376         List<SomfyTahomaDevice> devices = response != null ? List.of(response) : List.of();
 377         saveDevicePlaces(devices);
 378         return devices;
 379     }
 380
 381     public synchronized @Nullable SomfyTahomaDevice getCachedDevice(String url) {
 382         List<SomfyTahomaDevice> devices = cachedDevices.getValue();
 383         if (devices != null) {
 384             for (SomfyTahomaDevice device : devices) {
 385                 if (url.equals(device.getDeviceURL())) {
 386                     return device;
 387                 }
 388             }
 389         }
 390         return null;
 391     }
 392
 393     private void saveDevicePlaces(List<SomfyTahomaDevice> devices) {
 394         devicePlaces.clear();
 395         for (SomfyTahomaDevice device : devices) {
 396             if (!device.getPlaceOID().isEmpty()) {
 397                 SomfyTahomaDevice newDevice = new SomfyTahomaDevice();
 398                 newDevice.setPlaceOID(device.getPlaceOID());
 399                 newDevice.setWidget(device.getWidget());
 400                 devicePlaces.put(device.getDeviceURL(), newDevice);
 401             }
 402         }
 403     }
 404
 405     private void getTahomaUpdates() {
 406         logger.debug("Getting Tahoma Updates...");
 407         if (ThingStatus.OFFLINE == thing.getStatus() && !reLogin()) {
 408             return;
 409         }
 410
 411         List<SomfyTahomaEvent> events = getEvents();
 412         logger.trace("Got total of {} events", events.size());
 413         for (SomfyTahomaEvent event : events) {
 414             processEvent(event);
 415         }
 416     }
 417
 418     private void processEvent(SomfyTahomaEvent event) {
 419         logger.debug("Got event: {}", event.getName());
 420         switch (event.getName()) {
 421             case "ExecutionRegisteredEvent":
 422                 processExecutionRegisteredEvent(event);
 423                 break;
 424             case "ExecutionStateChangedEvent":
 425                 processExecutionChangedEvent(event);
 426                 break;
 427             case "DeviceStateChangedEvent":
 428                 processStateChangedEvent(event);
 429                 break;
 430             case "RefreshAllDevicesStatesCompletedEvent":
 431                 scheduler.schedule(this::updateThings, 1, TimeUnit.SECONDS);
 432                 break;
 433             case "GatewayAliveEvent":
 434             case "GatewayDownEvent":
 435                 processGatewayEvent(event);
 436                 break;
 437             default:
 438                 // ignore other states
 439         }
 440     }
 441
 442     private synchronized void updateThings() {
 443         boolean needsUpdate = reconciliation;
 444
 445         for (Thing th : getThing().getThings()) {
 446             if (ThingStatus.ONLINE != th.getStatus()) {
 447                 needsUpdate = true;
 448             }
 449         }
 450
 451         // update all states only if necessary
 452         if (needsUpdate) {
 453             updateAllStates();
 454             reconciliation = false;
 455         }
 456     }
 457
 458     private void processExecutionRegisteredEvent(SomfyTahomaEvent event) {
 459         boolean invalidData = false;
 460         try {
 461             JsonElement el = event.getAction();
 462             if (el.isJsonArray()) {
 463                 SomfyTahomaAction[] actions = gson.fromJson(el, SomfyTahomaAction[].class);
 464                 if (actions == null) {
 465                     invalidData = true;
 466                 } else {
 467                     for (SomfyTahomaAction action : actions) {
 468                         registerExecution(action.getDeviceURL(), event.getExecId());
 469                     }
 470                 }
 471             } else {
 472                 SomfyTahomaAction action = gson.fromJson(el, SomfyTahomaAction.class);
 473                 if (action == null) {
 474                     invalidData = true;
 475                 } else {
 476                     registerExecution(action.getDeviceURL(), event.getExecId());
 477                 }
 478             }
 479         } catch (JsonSyntaxException e) {
 480             invalidData = true;
 481         }
 482         if (invalidData) {
 483             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR,
 484                     "Received invalid data (execution registered)");
 485         }
 486     }
 487
 488     private void processExecutionChangedEvent(SomfyTahomaEvent event) {
 489         if (FAILED_EVENT.equals(event.getNewState()) || COMPLETED_EVENT.equals(event.getNewState())) {
 490             logger.debug("Removing execution id: {}", event.getExecId());
 491             unregisterExecution(event.getExecId());
 492         }
 493     }
 494
 495     private void registerExecution(String url, String execId) {
 496         if (executions.containsKey(url)) {
 497             executions.remove(url);
 498             logger.debug("Previous execution exists for url: {}", url);
 499         }
 500         executions.put(url, execId);
 501     }
 502
 503     private void unregisterExecution(String execId) {
 504         if (executions.containsValue(execId)) {
 505             executions.values().removeAll(Collections.singleton(execId));
 506         } else {
 507             logger.debug("Cannot remove execution id: {}, because it is not registered", execId);
 508         }
 509     }
 510
 511     private void processGatewayEvent(SomfyTahomaEvent event) {
 512         // update gateway status
 513         for (Thing th : getThing().getThings()) {
 514             if (THING_TYPE_GATEWAY.equals(th.getThingTypeUID())) {
 515                 SomfyTahomaGatewayHandler gatewayHandler = (SomfyTahomaGatewayHandler) th.getHandler();
 516                 if (gatewayHandler != null && gatewayHandler.getGateWayId().equals(event.getGatewayId())) {
 517                     gatewayHandler.refresh(STATUS);
 518                 }
 519             }
 520         }
 521     }
 522
 523     private synchronized void updateAllStates() {
 524         logger.debug("Updating all states");
 525         getDevices().forEach(device -> updateDevice(device));
 526     }
 527
 528     private void updateDevice(SomfyTahomaDevice device) {
 529         String url = device.getDeviceURL();
 530         List<SomfyTahomaState> states = device.getStates();
 531         updateDevice(url, states);
 532     }
 533
 534     private void updateDevice(String url, List<SomfyTahomaState> states) {
 535         Thing th = getThingByDeviceUrl(url);
 536         if (th == null) {
 537             return;
 538         }
 539         SomfyTahomaBaseThingHandler handler = (SomfyTahomaBaseThingHandler) th.getHandler();
 540         if (handler != null) {
 541             handler.updateThingStatus(states);
 542             handler.updateThingChannels(states);
 543         }
 544     }
 545
 546     private void processStateChangedEvent(SomfyTahomaEvent event) {
 547         String deviceUrl = event.getDeviceUrl();
 548         List<SomfyTahomaState> states = event.getDeviceStates();
 549         logger.debug("States for device {} : {}", deviceUrl, states);
 550         Thing thing = getThingByDeviceUrl(deviceUrl);
 551
 552         if (thing != null) {
 553             logger.debug("Updating status of thing: {}", thing.getLabel());
 554             SomfyTahomaBaseThingHandler handler = (SomfyTahomaBaseThingHandler) thing.getHandler();
 555
 556             if (handler != null) {
 557                 // update thing status
 558                 handler.updateThingStatus(states);
 559                 handler.updateThingChannels(states);
 560             }
 561         } else {
 562             logger.debug("Thing handler is null, probably not bound thing.");
 563         }
 564     }
 565
 566     private void enableReconciliation() {
 567         logger.debug("Enabling reconciliation");
 568         reconciliation = true;
 569     }
 570
 571     private void refreshTahomaStates() {
 572         logger.debug("Refreshing Tahoma states...");
 573         if (ThingStatus.OFFLINE == thing.getStatus() && !reLogin()) {
 574             return;
 575         }
 576
 577         // force Tahoma to ask for actual states
 578         forceGatewaySync();
 579     }
 580
 581     private @Nullable Thing getThingByDeviceUrl(String deviceUrl) {
 582         for (Thing th : getThing().getThings()) {
 583             String url = (String) th.getConfiguration().get("url");
 584             if (deviceUrl.equals(url)) {
 585                 return th;
 586             }
 587         }
 588         return null;
 589     }
 590
 591     private void logout() {
 592         try {
 593             eventsId = "";
 594             sendGetToTahomaWithCookie(TAHOMA_API_URL + "logout");
 595         } catch (ExecutionException | TimeoutException e) {
 596             logger.debug("Cannot send logout command!", e);
 597         } catch (InterruptedException e) {
 598             Thread.currentThread().interrupt();
 599         }
 600     }
 601
 602     private String sendPostToTahomaWithCookie(String url, String urlParameters)
 603             throws InterruptedException, ExecutionException, TimeoutException {
 604         return sendMethodToTahomaWithCookie(url, HttpMethod.POST, urlParameters);
 605     }
 606
 607     private String sendGetToTahomaWithCookie(String url)
 608             throws InterruptedException, ExecutionException, TimeoutException {
 609         return sendMethodToTahomaWithCookie(url, HttpMethod.GET);
 610     }
 611
 612     private String sendPutToTahomaWithCookie(String url)
 613             throws InterruptedException, ExecutionException, TimeoutException {
 614         return sendMethodToTahomaWithCookie(url, HttpMethod.PUT);
 615     }
 616
 617     private String sendDeleteToTahomaWithCookie(String url)
 618             throws InterruptedException, ExecutionException, TimeoutException {
 619         return sendMethodToTahomaWithCookie(url, HttpMethod.DELETE);
 620     }
 621
 622     private String sendMethodToTahomaWithCookie(String url, HttpMethod method)
 623             throws InterruptedException, ExecutionException, TimeoutException {
 624         return sendMethodToTahomaWithCookie(url, method, "");
 625     }
 626
 627     private String sendMethodToTahomaWithCookie(String url, HttpMethod method, String urlParameters)
 628             throws InterruptedException, ExecutionException, TimeoutException {
 629         logger.trace("Sending {} to url: {} with data: {}", method.asString(), url, urlParameters);
 630         Request request = sendRequestBuilder(url, method);
 631         if (!urlParameters.isEmpty()) {
 632             request = request.content(new StringContentProvider(urlParameters), "application/json;charset=UTF-8");
 633         }
 634
 635         ContentResponse response = request.send();
 636
 637         if (logger.isTraceEnabled()) {
 638             logger.trace("Response: {}", response.getContentAsString());
 639         }
 640
 641         if (response.getStatus() < 200 || response.getStatus() >= 300) {
 642             logger.debug("Received unexpected status code: {}", response.getStatus());
 643         }
 644         return response.getContentAsString();
 645     }
 646
 647     private Request sendRequestBuilder(String url, HttpMethod method) {
 648         return httpClient.newRequest(url).method(method).header(HttpHeader.ACCEPT_LANGUAGE, "en-US,en")
 649                 .header(HttpHeader.ACCEPT_ENCODING, "gzip, deflate").header("X-Requested-With", "XMLHttpRequest")
 650                 .timeout(TAHOMA_TIMEOUT, TimeUnit.SECONDS).agent(TAHOMA_AGENT);
 651     }
 652
 653     public void sendCommand(String io, String command, String params, String url) {
 654         if (ThingStatus.OFFLINE == thing.getStatus() && !reLogin()) {
 655             return;
 656         }
 657
 658         removeFinishedRetries();
 659
 660         boolean result = sendCommandInternal(io, command, params, url);
 661         if (!result) {
 662             scheduleRetry(io, command, params, url, thingConfig.getRetries());
 663         }
 664     }
 665
 666     private void repeatSendCommandInternal(String io, String command, String params, String url, int retries) {
 667         logger.debug("Retrying command, retries left: {}", retries);
 668         boolean result = sendCommandInternal(io, command, params, url);
 669         if (!result && (retries > 0)) {
 670             scheduleRetry(io, command, params, url, retries - 1);
 671         }
 672     }
 673
 674     private boolean sendCommandInternal(String io, String command, String params, String url) {
 675         String value = params.equals("[]") ? command : command + " " + params.replace("\"", "");
 676         String urlParameters = "{\"label\":\"" + getThingLabelByURL(io) + " - " + value
 677                 + " - openHAB\",\"actions\":[{\"deviceURL\":\"" + io + "\",\"commands\":[{\"name\":\"" + command
 678                 + "\",\"parameters\":" + params + "}]}]}";
 679         SomfyTahomaApplyResponse response = invokeCallToURL(url, urlParameters, HttpMethod.POST,
 680                 SomfyTahomaApplyResponse.class);
 681         if (response != null) {
 682             if (!response.getExecId().isEmpty()) {
 683                 logger.debug("Exec id: {}", response.getExecId());
 684                 registerExecution(io, response.getExecId());
 685                 scheduleNextGetUpdates();
 686             } else {
 687                 logger.debug("ExecId is empty!");
 688                 return false;
 689             }
 690             return true;
 691         }
 692         return false;
 693     }
 694
 695     private void removeFinishedRetries() {
 696         retryFutures.removeIf(x -> x.isDone());
 697         logger.debug("Currently {} retries are scheduled.", retryFutures.size());
 698     }
 699
 700     private void scheduleRetry(String io, String command, String params, String url, int retries) {
 701         retryFutures.add(scheduler.schedule(() -> {
 702             repeatSendCommandInternal(io, command, params, url, retries);
 703         }, thingConfig.getRetryDelay(), TimeUnit.MILLISECONDS));
 704     }
 705
 706     public void sendCommandToSameDevicesInPlace(String io, String command, String params, String url) {
 707         SomfyTahomaDevice device = devicePlaces.get(io);
 708         if (device != null && !device.getPlaceOID().isEmpty()) {
 709             devicePlaces.forEach((deviceUrl, devicePlace) -> {
 710                 if (device.getPlaceOID().equals(devicePlace.getPlaceOID())
 711                         && device.getWidget().equals(devicePlace.getWidget())) {
 712                     sendCommand(deviceUrl, command, params, url);
 713                 }
 714             });
 715         } else {
 716             sendCommand(io, command, params, url);
 717         }
 718     }
 719
 720     private String getThingLabelByURL(String io) {
 721         Thing th = getThingByDeviceUrl(io);
 722         if (th != null) {
 723             if (th.getProperties().containsKey(NAME_STATE)) {
 724                 // Return label from Tahoma
 725                 return th.getProperties().get(NAME_STATE).replace("\"", "");
 726             }
 727             // Return label from the thing
 728             String label = th.getLabel();
 729             return label != null ? label.replace("\"", "") : "";
 730         }
 731         return "null";
 732     }
 733
 734     public @Nullable String getCurrentExecutions(String io) {
 735         if (executions.containsKey(io)) {
 736             return executions.get(io);
 737         }
 738         return null;
 739     }
 740
 741     public void cancelExecution(String executionId) {
 742         invokeCallToURL(DELETE_URL + executionId, "", HttpMethod.DELETE, null);
 743     }
 744
 745     public void executeActionGroup(String id) {
 746         if (ThingStatus.OFFLINE == thing.getStatus() && !reLogin()) {
 747             return;
 748         }
 749         String execId = executeActionGroupInternal(id);
 750         if (execId == null) {
 751             execId = executeActionGroupInternal(id);
 752         }
 753         if (execId != null) {
 754             registerExecution(id, execId);
 755             scheduleNextGetUpdates();
 756         }
 757     }
 758
 759     private boolean reLogin() {
 760         logger.debug("Doing relogin");
 761         reLoginNeeded = true;
 762         login();
 763         return ThingStatus.OFFLINE != thing.getStatus();
 764     }
 765
 766     public @Nullable String executeActionGroupInternal(String id) {
 767         SomfyTahomaApplyResponse response = invokeCallToURL(EXEC_URL + id, "", HttpMethod.POST,
 768                 SomfyTahomaApplyResponse.class);
 769         if (response != null) {
 770             if (response.getExecId().isEmpty()) {
 771                 logger.debug("Got empty exec response");
 772                 return null;
 773             }
 774             return response.getExecId();
 775         }
 776         return null;
 777     }
 778
 779     public void forceGatewaySync() {
 780         invokeCallToURL(REFRESH_URL, "", HttpMethod.PUT, null);
 781     }
 782
 783     public SomfyTahomaStatus getTahomaStatus(String gatewayId) {
 784         SomfyTahomaStatusResponse data = invokeCallToURL(GATEWAYS_URL + gatewayId, "", HttpMethod.GET,
 785                 SomfyTahomaStatusResponse.class);
 786         if (data != null) {
 787             logger.debug("Tahoma status: {}", data.getConnectivity().getStatus());
 788             logger.debug("Tahoma protocol version: {}", data.getConnectivity().getProtocolVersion());
 789             return data.getConnectivity();
 790         }
 791         return new SomfyTahomaStatus();
 792     }
 793
 794     private boolean isAuthenticationChallenge(Exception ex) {
 795         String msg = ex.getMessage();
 796         return msg != null && msg.contains(AUTHENTICATION_CHALLENGE);
 797     }
 798
 799     @Override
 800     public void handleConfigurationUpdate(Map<String, Object> configurationParameters) {
 801         super.handleConfigurationUpdate(configurationParameters);
 802         if (configurationParameters.containsKey("email")) {
 803             thingConfig.setEmail(configurationParameters.get("email").toString());
 804         }
 805         if (configurationParameters.containsKey("password")) {
 806             thingConfig.setPassword(configurationParameters.get("password").toString());
 807         }
 808     }
 809
 810     public synchronized void refresh(String url, String stateName) {
 811         SomfyTahomaState state = invokeCallToURL(DEVICES_URL + urlEncode(url) + "/states/" + stateName, "",
 812                 HttpMethod.GET, SomfyTahomaState.class);
 813         if (state != null && !state.getName().isEmpty()) {
 814             updateDevice(url, List.of(state));
 815         }
 816     }
 817
 818     private @Nullable <T> T invokeCallToURL(String url, String urlParameters, HttpMethod method,
 819             @Nullable Class<T> classOfT) {
 820         String response = "";
 821         try {
 822             switch (method) {
 823                 case GET:
 824                     response = sendGetToTahomaWithCookie(url);
 825                     break;
 826                 case PUT:
 827                     response = sendPutToTahomaWithCookie(url);
 828                     break;
 829                 case POST:
 830                     response = sendPostToTahomaWithCookie(url, urlParameters);
 831                     break;
 832                 case DELETE:
 833                     response = sendDeleteToTahomaWithCookie(url);
 834                 default:
 835             }
 836             return classOfT != null ? gson.fromJson(response, classOfT) : null;
 837         } catch (JsonSyntaxException e) {
 838             logger.debug("Received data: {} is not JSON", response, e);
 839             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, "Received invalid data");
 840         } catch (ExecutionException e) {
 841             if (isAuthenticationChallenge(e)) {
 842                 reLogin();
 843             } else {
 844                 logger.debug("Cannot call url: {} with params: {}!", url, urlParameters, e);
 845                 updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR);
 846             }
 847         } catch (TimeoutException e) {
 848             logger.debug("Timeout when calling url: {} with params: {}!", url, urlParameters, e);
 849             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR);
 850         } catch (InterruptedException e) {
 851             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR);
 852             Thread.currentThread().interrupt();
 853         }
 854         return null;
 855     }
 856 }