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   1 /**
   2  * Copyright (c) 2010-2022 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.http.internal;
  14
  15 import static org.openhab.binding.http.internal.HttpBindingConstants.THING_TYPE_URL;
  16
  17 import java.util.Set;
  18
  19 import org.eclipse.jdt.annotation.NonNullByDefault;
  20 import org.eclipse.jdt.annotation.Nullable;
  21 import org.eclipse.jetty.client.HttpClient;
  22 import org.eclipse.jetty.util.ssl.SslContextFactory;
  23 import org.openhab.binding.http.internal.transform.CascadedValueTransformationImpl;
  24 import org.openhab.binding.http.internal.transform.NoOpValueTransformation;
  25 import org.openhab.binding.http.internal.transform.ValueTransformation;
  26 import org.openhab.binding.http.internal.transform.ValueTransformationProvider;
  27 import org.openhab.core.io.net.http.HttpClientFactory;
  28 import org.openhab.core.thing.Thing;
  29 import org.openhab.core.thing.ThingTypeUID;
  30 import org.openhab.core.thing.binding.BaseThingHandlerFactory;
  31 import org.openhab.core.thing.binding.ThingHandler;
  32 import org.openhab.core.thing.binding.ThingHandlerFactory;
  33 import org.openhab.core.transform.TransformationHelper;
  34 import org.osgi.service.component.annotations.Activate;
  35 import org.osgi.service.component.annotations.Component;
  36 import org.osgi.service.component.annotations.Deactivate;
  37 import org.osgi.service.component.annotations.Reference;
  38 import org.slf4j.Logger;
  39 import org.slf4j.LoggerFactory;
  40
  41 /**
  42  * The {@link HttpHandlerFactory} is responsible for creating things and thing
  43  * handlers.
  44  *
  45  * @author Jan N. Klug - Initial contribution
  46  */
  47 @NonNullByDefault
  48 @Component(configurationPid = "binding.http", service = ThingHandlerFactory.class)
  49 public class HttpHandlerFactory extends BaseThingHandlerFactory
  50         implements ValueTransformationProvider, HttpClientProvider {
  51     private static final Set<ThingTypeUID> SUPPORTED_THING_TYPES_UIDS = Set.of(THING_TYPE_URL);
  52     private final Logger logger = LoggerFactory.getLogger(HttpHandlerFactory.class);
  53
  54     private final HttpClient secureClient;
  55     private final HttpClient insecureClient;
  56
  57     private final HttpDynamicStateDescriptionProvider httpDynamicStateDescriptionProvider;
  58
  59     @Activate
  60     public HttpHandlerFactory(@Reference HttpClientFactory httpClientFactory,
  61             @Reference HttpDynamicStateDescriptionProvider httpDynamicStateDescriptionProvider) {
  62         this.secureClient = new HttpClient(new SslContextFactory.Client());
  63         this.insecureClient = new HttpClient(new SslContextFactory.Client(true));
  64         try {
  65             this.secureClient.start();
  66             this.insecureClient.start();
  67         } catch (Exception e) {
  68             // catching exception is necessary due to the signature of HttpClient.start()
  69             logger.warn("Failed to start insecure http client: {}", e.getMessage());
  70             throw new IllegalStateException("Could not create insecure HttpClient");
  71         }
  72         this.httpDynamicStateDescriptionProvider = httpDynamicStateDescriptionProvider;
  73     }
  74
  75     @Deactivate
  76     public void deactivate() {
  77         try {
  78             secureClient.stop();
  79             insecureClient.stop();
  80         } catch (Exception e) {
  81             // catching exception is necessary due to the signature of HttpClient.stop()
  82             logger.warn("Failed to stop insecure http client: {}", e.getMessage());
  83         }
  84     }
  85
  86     @Override
  87     public boolean supportsThingType(ThingTypeUID thingTypeUID) {
  88         return SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID);
  89     }
  90
  91     @Override
  92     protected @Nullable ThingHandler createHandler(Thing thing) {
  93         ThingTypeUID thingTypeUID = thing.getThingTypeUID();
  94
  95         if (THING_TYPE_URL.equals(thingTypeUID)) {
  96             return new HttpThingHandler(thing, this, this, httpDynamicStateDescriptionProvider);
  97         }
  98
  99         return null;
 100     }
 101
 102     @Override
 103     public ValueTransformation getValueTransformation(@Nullable String pattern) {
 104         if (pattern == null || pattern.isEmpty()) {
 105             return NoOpValueTransformation.getInstance();
 106         }
 107         return new CascadedValueTransformationImpl(pattern,
 108                 name -> TransformationHelper.getTransformationService(bundleContext, name));
 109     }
 110
 111     @Override
 112     public HttpClient getSecureClient() {
 113         return secureClient;
 114     }
 115
 116     @Override
 117     public HttpClient getInsecureClient() {
 118         return insecureClient;
 119     }
 120 }