2 * Copyright (c) 2010-2022 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.nest.internal.sdm.api;
15 import static org.eclipse.jetty.http.HttpHeader.*;
16 import static org.eclipse.jetty.http.HttpMethod.*;
17 import static org.openhab.binding.nest.internal.sdm.dto.SDMGson.GSON;
19 import java.io.IOException;
20 import java.math.BigDecimal;
21 import java.time.Duration;
22 import java.util.List;
24 import java.util.concurrent.ConcurrentHashMap;
25 import java.util.concurrent.ExecutionException;
26 import java.util.concurrent.TimeUnit;
27 import java.util.concurrent.TimeoutException;
29 import org.eclipse.jdt.annotation.NonNullByDefault;
30 import org.eclipse.jdt.annotation.Nullable;
31 import org.eclipse.jetty.client.HttpClient;
32 import org.eclipse.jetty.client.api.ContentResponse;
33 import org.eclipse.jetty.client.api.Request;
34 import org.eclipse.jetty.client.util.StringContentProvider;
35 import org.openhab.binding.nest.internal.sdm.dto.SDMCommands.SDMCommandRequest;
36 import org.openhab.binding.nest.internal.sdm.dto.SDMCommands.SDMCommandResponse;
37 import org.openhab.binding.nest.internal.sdm.dto.SDMDevice;
38 import org.openhab.binding.nest.internal.sdm.dto.SDMError;
39 import org.openhab.binding.nest.internal.sdm.dto.SDMError.SDMErrorDetails;
40 import org.openhab.binding.nest.internal.sdm.dto.SDMListDevicesResponse;
41 import org.openhab.binding.nest.internal.sdm.dto.SDMListRoomsResponse;
42 import org.openhab.binding.nest.internal.sdm.dto.SDMListStructuresResponse;
43 import org.openhab.binding.nest.internal.sdm.dto.SDMRoom;
44 import org.openhab.binding.nest.internal.sdm.dto.SDMStructure;
45 import org.openhab.binding.nest.internal.sdm.exception.FailedSendingSDMDataException;
46 import org.openhab.binding.nest.internal.sdm.exception.InvalidSDMAccessTokenException;
47 import org.openhab.binding.nest.internal.sdm.exception.InvalidSDMAuthorizationCodeException;
48 import org.openhab.binding.nest.internal.sdm.listener.SDMAPIRequestListener;
49 import org.openhab.core.auth.client.oauth2.AccessTokenResponse;
50 import org.openhab.core.auth.client.oauth2.OAuthClientService;
51 import org.openhab.core.auth.client.oauth2.OAuthException;
52 import org.openhab.core.auth.client.oauth2.OAuthFactory;
53 import org.openhab.core.auth.client.oauth2.OAuthResponseException;
54 import org.openhab.core.io.net.http.HttpClientFactory;
55 import org.slf4j.Logger;
56 import org.slf4j.LoggerFactory;
59 * The {@link SDMAPI} implements the SDM REST API which allows for querying Nest device, structure and room information
60 * as well as executing device commands.
62 * @author Wouter Born - Initial contribution
64 * @see https://developers.google.com/nest/device-access/reference/rest
69 private static final String AUTH_URL = "https://accounts.google.com/o/oauth2/auth";
70 private static final String TOKEN_URL = "https://accounts.google.com/o/oauth2/token";
71 private static final String REDIRECT_URI = "urn:ietf:wg:oauth:2.0:oob";
73 private static final String SDM_HANDLE_FORMAT = "%s.sdm";
74 private static final String SDM_SCOPE = "https://www.googleapis.com/auth/sdm.service";
76 private static final String SDM_URL_PREFIX = "https://smartdevicemanagement.googleapis.com/v1/enterprises/";
78 private static final String APPLICATION_JSON = "application/json";
79 private static final String BEARER = "Bearer ";
80 private static final String IMAGE_JPEG = "image/jpeg";
82 private static final Duration REQUEST_TIMEOUT = Duration.ofMinutes(1);
84 private final Logger logger = LoggerFactory.getLogger(SDMAPI.class);
86 private final HttpClient httpClient;
87 private final OAuthClientService oAuthService;
88 private final String projectId;
90 private final Set<SDMAPIRequestListener> requestListeners = ConcurrentHashMap.newKeySet();
92 public SDMAPI(HttpClientFactory httpClientFactory, OAuthFactory oAuthFactory, String ownerId, String projectId,
93 String clientId, String clientSecret) {
94 this.httpClient = httpClientFactory.getCommonHttpClient();
95 this.oAuthService = oAuthFactory.createOAuthClientService(String.format(SDM_HANDLE_FORMAT, ownerId), TOKEN_URL,
96 AUTH_URL, clientId, clientSecret, SDM_SCOPE, false);
97 this.projectId = projectId;
100 public void dispose() {
101 requestListeners.clear();
104 public void authorizeClient(String authorizationCode) throws InvalidSDMAuthorizationCodeException, IOException {
106 oAuthService.getAccessTokenResponseByAuthorizationCode(authorizationCode, REDIRECT_URI);
107 } catch (OAuthException | OAuthResponseException e) {
108 throw new InvalidSDMAuthorizationCodeException(
109 "Failed to authorize SDM client. Check the authorization code or generate a new one.", e);
113 public void checkAccessTokenValidity() throws InvalidSDMAccessTokenException, IOException {
114 getAuthorizationHeader();
117 public void addRequestListener(SDMAPIRequestListener listener) {
118 requestListeners.add(listener);
121 public void removeRequestListener(SDMAPIRequestListener listener) {
122 requestListeners.remove(listener);
125 public <T extends SDMCommandResponse> @Nullable T executeDeviceCommand(String deviceId,
126 SDMCommandRequest<T> request) throws FailedSendingSDMDataException, InvalidSDMAccessTokenException {
127 logger.debug("Executing device command for: {}", deviceId);
128 String requestContent = GSON.toJson(request);
129 String responseContent = postJson(getDeviceUrl(deviceId) + ":executeCommand", requestContent);
130 return GSON.fromJson(responseContent, request.getResponseClass());
133 private String getAuthorizationHeader() throws InvalidSDMAccessTokenException, IOException {
135 AccessTokenResponse response = oAuthService.getAccessTokenResponse();
136 if (response == null || response.getAccessToken() == null || response.getAccessToken().isEmpty()) {
137 throw new InvalidSDMAccessTokenException("No SDM access token. Client may not have been authorized.");
139 return BEARER + response.getAccessToken();
140 } catch (OAuthException | OAuthResponseException e) {
141 throw new InvalidSDMAccessTokenException(
142 "Error fetching SDM access token. Check the authorization code or generate a new one.", e);
146 public byte[] getCameraImage(String url, String token, @Nullable BigDecimal imageWidth,
147 @Nullable BigDecimal imageHeight) throws FailedSendingSDMDataException {
149 logger.debug("Getting camera image from: {}", url);
151 Request request = httpClient.newRequest(url) //
153 .header(ACCEPT, IMAGE_JPEG) //
154 .header(AUTHORIZATION, token) //
155 .timeout(REQUEST_TIMEOUT.toNanos(), TimeUnit.NANOSECONDS);
157 if (imageWidth != null) {
158 request = request.param("width", Long.toString(imageWidth.longValue()));
159 } else if (imageHeight != null) {
160 request = request.param("height", Long.toString(imageHeight.longValue()));
163 ContentResponse contentResponse = request.send();
164 logResponseErrors(contentResponse);
165 logger.debug("Retrieved camera image from: {}", url);
166 requestListeners.forEach(listener -> listener.onSuccess());
167 return contentResponse.getContent();
168 } catch (ExecutionException | InterruptedException | TimeoutException e) {
169 logger.debug("Failed to get camera image", e);
170 FailedSendingSDMDataException exception = new FailedSendingSDMDataException("Failed to get camera image",
172 requestListeners.forEach(listener -> listener.onError(exception));
177 public @Nullable SDMDevice getDevice(String deviceId)
178 throws FailedSendingSDMDataException, InvalidSDMAccessTokenException {
179 logger.debug("Getting device: {}", deviceId);
180 return GSON.fromJson(getJson(getDeviceUrl(deviceId)), SDMDevice.class);
183 public @Nullable SDMStructure getStructure(String structureId)
184 throws FailedSendingSDMDataException, InvalidSDMAccessTokenException {
185 logger.debug("Getting structure: {}", structureId);
186 return GSON.fromJson(getJson(getStructureUrl(structureId)), SDMStructure.class);
189 public @Nullable SDMRoom getRoom(String structureId, String roomId)
190 throws FailedSendingSDMDataException, InvalidSDMAccessTokenException {
191 logger.debug("Getting structure {} room: {}", structureId, roomId);
192 return GSON.fromJson(getJson(getRoomUrl(structureId, roomId)), SDMRoom.class);
195 private String getProjectUrl() {
196 return SDM_URL_PREFIX + projectId;
199 private String getDevicesUrl() {
200 return getProjectUrl() + "/devices";
203 private String getDevicesUrl(String pageToken) {
204 return getDevicesUrl() + "?pageToken=" + pageToken;
207 private String getDeviceUrl(String deviceId) {
208 return getDevicesUrl() + "/" + deviceId;
211 private String getStructuresUrl() {
212 return getProjectUrl() + "/structures";
215 private String getStructuresUrl(String pageToken) {
216 return getStructuresUrl() + "?pageToken=" + pageToken;
219 private String getStructureUrl(String structureId) {
220 return getStructuresUrl() + "/" + structureId;
223 private String getRoomsUrl(String structureId) {
224 return getStructureUrl(structureId) + "/rooms";
227 private String getRoomsUrl(String structureId, String pageToken) {
228 return getRoomsUrl(structureId) + "?pageToken=" + pageToken;
231 private String getRoomUrl(String structureId, String roomId) {
232 return getRoomsUrl(structureId) + "/" + roomId;
235 public List<SDMDevice> listDevices() throws FailedSendingSDMDataException, InvalidSDMAccessTokenException {
236 logger.debug("Listing devices");
237 SDMListDevicesResponse response = GSON.fromJson(getJson(getDevicesUrl()), SDMListDevicesResponse.class);
238 List<SDMDevice> result = response == null ? List.of() : response.devices;
239 while (response != null && !response.nextPageToken.isEmpty()) {
240 response = GSON.fromJson(getJson(getDevicesUrl(response.nextPageToken)), SDMListDevicesResponse.class);
241 if (response != null) {
242 result.addAll(response.devices);
248 public List<SDMStructure> listStructures() throws FailedSendingSDMDataException, InvalidSDMAccessTokenException {
249 logger.debug("Listing structures");
250 SDMListStructuresResponse response = GSON.fromJson(getJson(getStructuresUrl()),
251 SDMListStructuresResponse.class);
252 List<SDMStructure> result = response == null ? List.of() : response.structures;
253 while (response != null && !response.nextPageToken.isEmpty()) {
254 response = GSON.fromJson(getJson(getStructuresUrl(response.nextPageToken)),
255 SDMListStructuresResponse.class);
256 if (response != null) {
257 result.addAll(response.structures);
263 public List<SDMRoom> listRooms(String structureId)
264 throws FailedSendingSDMDataException, InvalidSDMAccessTokenException {
265 logger.debug("Listing rooms for structure: {}", structureId);
266 SDMListRoomsResponse response = GSON.fromJson(getJson(getRoomsUrl(structureId)), SDMListRoomsResponse.class);
267 List<SDMRoom> result = response == null ? List.of() : response.rooms;
268 while (response != null && !response.nextPageToken.isEmpty()) {
269 response = GSON.fromJson(getJson(getRoomsUrl(structureId, response.nextPageToken)),
270 SDMListRoomsResponse.class);
271 if (response != null) {
272 result.addAll(response.rooms);
278 private void logResponseErrors(ContentResponse contentResponse) {
279 if (contentResponse.getStatus() >= 400) {
280 logger.debug("SDM API error: {}", contentResponse.getContentAsString());
282 SDMError error = GSON.fromJson(contentResponse.getContentAsString(), SDMError.class);
283 SDMErrorDetails details = error == null ? null : error.error;
285 if (details != null && !details.message.isBlank()) {
286 logger.warn("SDM API error: {}", details.message);
288 logger.warn("SDM API error: {} (HTTP {})", contentResponse.getReason(), contentResponse.getStatus());
293 private String getJson(String url) throws FailedSendingSDMDataException, InvalidSDMAccessTokenException {
295 logger.debug("Getting JSON from: {}", url);
296 ContentResponse contentResponse = httpClient.newRequest(url) //
298 .header(ACCEPT, APPLICATION_JSON) //
299 .header(AUTHORIZATION, getAuthorizationHeader()) //
300 .timeout(REQUEST_TIMEOUT.toNanos(), TimeUnit.NANOSECONDS) //
302 logResponseErrors(contentResponse);
303 String response = contentResponse.getContentAsString();
304 logger.debug("Response: {}", response);
305 requestListeners.forEach(listener -> listener.onSuccess());
307 } catch (ExecutionException | InterruptedException | IOException | TimeoutException e) {
308 logger.debug("Failed to send JSON GET request", e);
309 FailedSendingSDMDataException exception = new FailedSendingSDMDataException(
310 "Failed to send JSON GET request", e);
311 requestListeners.forEach(listener -> listener.onError(exception));
316 private String postJson(String url, String requestContent)
317 throws FailedSendingSDMDataException, InvalidSDMAccessTokenException {
319 logger.debug("Posting JSON to: {}", url);
320 ContentResponse contentResponse = httpClient.newRequest(url) //
322 .header(ACCEPT, APPLICATION_JSON) //
323 .header(AUTHORIZATION, getAuthorizationHeader()) //
324 .content(new StringContentProvider(requestContent), APPLICATION_JSON) //
325 .timeout(REQUEST_TIMEOUT.toNanos(), TimeUnit.NANOSECONDS) //
327 logResponseErrors(contentResponse);
328 String response = contentResponse.getContentAsString();
329 logger.debug("Response: {}", response);
330 requestListeners.forEach(listener -> listener.onSuccess());
332 } catch (ExecutionException | InterruptedException | IOException | TimeoutException e) {
333 logger.debug("Failed to send JSON POST request", e);
334 FailedSendingSDMDataException exception = new FailedSendingSDMDataException(
335 "Failed to send JSON POST request", e);
336 requestListeners.forEach(listener -> listener.onError(exception));