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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.jellyfin.internal;
  14
  15 import static org.openhab.binding.jellyfin.internal.JellyfinBindingConstants.BINDING_ID;
  16 import static org.openhab.binding.jellyfin.internal.JellyfinBindingConstants.SUPPORTED_THING_TYPES;
  17 import static org.openhab.binding.jellyfin.internal.JellyfinBindingConstants.THING_TYPE_CLIENT;
  18 import static org.openhab.binding.jellyfin.internal.JellyfinBindingConstants.THING_TYPE_SERVER;
  19
  20 import java.util.HashMap;
  21 import java.util.Map;
  22
  23 import javax.servlet.ServletException;
  24
  25 import org.eclipse.jdt.annotation.NonNullByDefault;
  26 import org.eclipse.jdt.annotation.Nullable;
  27 import org.openhab.binding.jellyfin.internal.handler.JellyfinClientHandler;
  28 import org.openhab.binding.jellyfin.internal.handler.JellyfinServerHandler;
  29 import org.openhab.binding.jellyfin.internal.servlet.JellyfinBridgeServlet;
  30 import org.openhab.core.thing.Bridge;
  31 import org.openhab.core.thing.Thing;
  32 import org.openhab.core.thing.ThingTypeUID;
  33 import org.openhab.core.thing.ThingUID;
  34 import org.openhab.core.thing.binding.BaseThingHandlerFactory;
  35 import org.openhab.core.thing.binding.ThingHandler;
  36 import org.openhab.core.thing.binding.ThingHandlerFactory;
  37 import org.osgi.service.component.annotations.Activate;
  38 import org.osgi.service.component.annotations.Component;
  39 import org.osgi.service.component.annotations.Reference;
  40 import org.osgi.service.http.HttpService;
  41 import org.osgi.service.http.NamespaceException;
  42 import org.slf4j.Logger;
  43 import org.slf4j.LoggerFactory;
  44
  45 /**
  46  * The {@link JellyfinHandlerFactory} is responsible for creating things and thing
  47  * handlers.
  48  *
  49  * @author Miguel Álvarez - Initial contribution
  50  */
  51 @NonNullByDefault
  52 @Component(configurationPid = "binding.jellyfin", service = ThingHandlerFactory.class)
  53 public class JellyfinHandlerFactory extends BaseThingHandlerFactory {
  54     private final HttpService httpService;
  55     private final Logger logger = LoggerFactory.getLogger(JellyfinHandlerFactory.class);
  56     private final Map<ThingUID, JellyfinBridgeServlet> servletRegistrations = new HashMap<>();
  57
  58     @Activate
  59     public JellyfinHandlerFactory(@Reference HttpService httpService) {
  60         this.httpService = httpService;
  61     }
  62
  63     @Override
  64     public boolean supportsThingType(ThingTypeUID thingTypeUID) {
  65         return SUPPORTED_THING_TYPES.contains(thingTypeUID);
  66     }
  67
  68     @Override
  69     protected @Nullable ThingHandler createHandler(Thing thing) {
  70         ThingTypeUID thingTypeUID = thing.getThingTypeUID();
  71         if (THING_TYPE_SERVER.equals(thingTypeUID)) {
  72             var serverHandler = new JellyfinServerHandler((Bridge) thing);
  73             registerAuthenticationServlet(serverHandler);
  74             return serverHandler;
  75         }
  76         if (THING_TYPE_CLIENT.equals(thingTypeUID)) {
  77             return new JellyfinClientHandler(thing);
  78         }
  79         return null;
  80     }
  81
  82     @Override
  83     protected synchronized void removeHandler(ThingHandler thingHandler) {
  84         if (thingHandler instanceof JellyfinServerHandler) {
  85             var serverHandler = (JellyfinServerHandler) thingHandler;
  86             unregisterAuthenticationServlet(serverHandler);
  87         }
  88         super.removeHandler(thingHandler);
  89     }
  90
  91     private synchronized void registerAuthenticationServlet(JellyfinServerHandler bridgeHandler) {
  92         var auth = new JellyfinBridgeServlet(bridgeHandler);
  93         try {
  94             httpService.registerServlet(getAuthenticationServletPath(bridgeHandler), auth, null,
  95                     httpService.createDefaultHttpContext());
  96         } catch (NamespaceException | ServletException e) {
  97             logger.warn("Register servlet fails", e);
  98         }
  99         servletRegistrations.put(bridgeHandler.getThing().getUID(), auth);
 100     }
 101
 102     private synchronized void unregisterAuthenticationServlet(JellyfinServerHandler bridgeHandler) {
 103         var loginServlet = servletRegistrations.get(bridgeHandler.getThing().getUID());
 104         if (loginServlet != null) {
 105             httpService.unregister(getAuthenticationServletPath(bridgeHandler));
 106         }
 107     }
 108
 109     private String getAuthenticationServletPath(JellyfinServerHandler bridgeHandler) {
 110         return new StringBuilder().append("/").append(BINDING_ID).append("/")
 111                 .append(bridgeHandler.getThing().getUID().getId()).toString();
 112     }
 113 }