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   1 /**
   2  * Copyright (c) 2010-2023 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.mielecloud.internal.webservice.request;
  14
  15 import java.nio.charset.StandardCharsets;
  16 import java.util.Optional;
  17 import java.util.concurrent.TimeUnit;
  18
  19 import org.eclipse.jdt.annotation.NonNullByDefault;
  20 import org.eclipse.jetty.client.HttpClient;
  21 import org.eclipse.jetty.client.api.Request;
  22 import org.eclipse.jetty.client.util.StringContentProvider;
  23 import org.eclipse.jetty.http.HttpMethod;
  24 import org.openhab.binding.mielecloud.internal.webservice.exception.MieleWebserviceInitializationException;
  25 import org.openhab.binding.mielecloud.internal.webservice.language.LanguageProvider;
  26 import org.openhab.core.io.net.http.HttpClientFactory;
  27
  28 /**
  29  * Default implementation of {@link RequestFactory}.
  30  *
  31  * @author Björn Lange - Initial contribution
  32  */
  33 @NonNullByDefault
  34 public class RequestFactoryImpl implements RequestFactory {
  35     private static final long REQUEST_TIMEOUT = 5;
  36     private static final long EXTENDED_REQUEST_TIMEOUT = 10;
  37     private static final TimeUnit REQUEST_TIMEOUT_UNIT = TimeUnit.SECONDS;
  38
  39     private final HttpClient httpClient;
  40     private final LanguageProvider languageProvider;
  41
  42     /**
  43      * Creates a new {@link RequestFactoryImpl}.
  44      *
  45      * @param httpClientFactory Factory for obtaining a {@link HttpClient}.
  46      * @param languageProvider Provider for the language to use for new requests.
  47      * @throws MieleWebserviceInitializationException if creating and starting a new {@link HttpClient} fails.
  48      */
  49     public RequestFactoryImpl(HttpClientFactory httpClientFactory, LanguageProvider languageProvider) {
  50         this.httpClient = httpClientFactory.createHttpClient("mielecloud");
  51         try {
  52             this.httpClient.start();
  53         } catch (Exception e) {
  54             throw new MieleWebserviceInitializationException("Failed to start HttpClient", e);
  55         }
  56         this.languageProvider = languageProvider;
  57     }
  58
  59     private Request createRequestWithDefaultHeaders(String url, String accessToken) {
  60         return httpClient.newRequest(url).header("Content-type", "application/json").header("Authorization",
  61                 "Bearer " + accessToken);
  62     }
  63
  64     private Request decorateWithLanguageParameter(Request request) {
  65         Optional<String> language = languageProvider.getLanguage();
  66         if (language.isPresent() && !language.get().isEmpty()) {
  67             return request.param("language", language.get());
  68         } else {
  69             return request;
  70         }
  71     }
  72
  73     private Request decorateWithAcceptLanguageHeader(Request request) {
  74         Optional<String> language = languageProvider.getLanguage();
  75         if (language.isPresent() && !language.get().isEmpty()) {
  76             return request.header("Accept-Language", language.get());
  77         } else {
  78             return request;
  79         }
  80     }
  81
  82     private Request createDefaultHttpRequest(String url, String accessToken, long timeout) {
  83         return decorateWithLanguageParameter(createRequestWithDefaultHeaders(url, accessToken)).header("Accept", "*/*")
  84                 .timeout(timeout, REQUEST_TIMEOUT_UNIT);
  85     }
  86
  87     @Override
  88     public Request createGetRequest(String url, String accessToken) {
  89         return createDefaultHttpRequest(url, accessToken, REQUEST_TIMEOUT).method(HttpMethod.GET);
  90     }
  91
  92     @Override
  93     public Request createPutRequest(String url, String accessToken, String jsonContent) {
  94         return createDefaultHttpRequest(url, accessToken, EXTENDED_REQUEST_TIMEOUT).method(HttpMethod.PUT)
  95                 .content(new StringContentProvider("application/json", jsonContent, StandardCharsets.UTF_8));
  96     }
  97
  98     @Override
  99     public Request createPostRequest(String url, String accessToken) {
 100         return createDefaultHttpRequest(url, accessToken, REQUEST_TIMEOUT).method(HttpMethod.POST);
 101     }
 102
 103     @Override
 104     public Request createSseRequest(String url, String accessToken) {
 105         return decorateWithAcceptLanguageHeader(createRequestWithDefaultHeaders(url, accessToken)).header("Accept",
 106                 "text/event-stream");
 107     }
 108
 109     @Override
 110     public void close() throws Exception {
 111         httpClient.stop();
 112     }
 113 }