android/examples/fridgegroupserver/src/main/java/org/iotivity/base/examples/LightResource.java

   1 /*
   2  *******************************************************************
   3  *
   4  * Copyright 2015 Intel Corporation.
   5  *
   6  *-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
   7  *
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  *      http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  *
  20  *-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  21  */
  22
  23 package org.iotivity.base.examples;
  24
  25 import android.content.Context;
  26 import android.content.Intent;
  27 import android.util.Log;
  28
  29 import org.iotivity.base.EntityHandlerResult;
  30 import org.iotivity.base.OcException;
  31 import org.iotivity.base.OcPlatform;
  32 import org.iotivity.base.OcRepresentation;
  33 import org.iotivity.base.OcResourceHandle;
  34 import org.iotivity.base.OcResourceRequest;
  35 import org.iotivity.base.OcResourceResponse;
  36 import org.iotivity.base.RequestHandlerFlag;
  37 import org.iotivity.base.ResourceProperty;
  38
  39 import java.util.EnumSet;
  40
  41
  42 /**
  43  * LightResource
  44  * <p/>
  45  * LightResource is a sample OIC server resource created by the refrigerator.
  46  */
  47 public class LightResource extends Resource implements OcPlatform.EntityHandler {
  48     LightResource(Context context) {
  49         mContext = context;
  50
  51         registerLightResource();
  52     }
  53
  54     private void registerLightResource() {
  55         try {
  56             logMessage(TAG + "RegisterLightResource " + LIGHT_URI + " : " + RESOURCE_TYPELIGHT);
  57             mResourceHandle = OcPlatform.registerResource(
  58                     LIGHT_URI,
  59                     RESOURCE_TYPELIGHT,
  60                     OcPlatform.DEFAULT_INTERFACE,
  61                     this,
  62                     EnumSet.of(ResourceProperty.DISCOVERABLE));
  63         } catch (OcException e) {
  64             logMessage(TAG + "Failed to register LightResource");
  65             Log.e(TAG, e.getMessage());
  66         }
  67         logMessage("-----------------------------------------------------");
  68     }
  69
  70     /**
  71      * sample implementation of eventHandler for lightResource - this can be implemented in many
  72      * different ways
  73      *
  74      * @param ocResourceRequest OcResourceRequest from the client
  75      * @return EntityHandlerResult indicates whether the request was handled successfully or not
  76      */
  77     @Override
  78     public synchronized EntityHandlerResult handleEntity(OcResourceRequest ocResourceRequest) {
  79         EntityHandlerResult result = EntityHandlerResult.ERROR;
  80         if (null != ocResourceRequest) {
  81             try {
  82                 if (ocResourceRequest.getRequestHandlerFlagSet().contains(
  83                         RequestHandlerFlag.REQUEST)) {
  84                     OcResourceResponse response = new OcResourceResponse();
  85                     response.setRequestHandle(ocResourceRequest.getRequestHandle());
  86                     response.setResourceHandle(ocResourceRequest.getResourceHandle());
  87                     switch (ocResourceRequest.getRequestType()) {
  88                         case GET:
  89                             response.setErrorCode(Resource.SUCCESS);
  90                             updateRepresentationValues();
  91                             response.setResourceRepresentation(mRepresentation);
  92                             response.setResponseResult(EntityHandlerResult.OK);
  93                             OcPlatform.sendResponse(response);
  94                             result = EntityHandlerResult.OK;
  95                             break;
  96                         case PUT:
  97                             response.setErrorCode(Resource.SUCCESS);
  98                             put(ocResourceRequest.getResourceRepresentation());
  99                             updateRepresentationValues();
 100                             response.setResourceRepresentation(mRepresentation);
 101                             response.setResponseResult(EntityHandlerResult.OK);
 102                             OcPlatform.sendResponse(response);
 103                             result = EntityHandlerResult.OK;
 104                             break;
 105                     }
 106                 }
 107             } catch (OcException e) {
 108                 logMessage("Error in handleEntity");
 109                 Log.e(TAG, e.getMessage());
 110                 return EntityHandlerResult.ERROR;
 111             }
 112         }
 113         logMessage("-----------------------------------------------------");
 114         return result;
 115     }
 116
 117     public OcResourceHandle getHandle() {
 118         return mResourceHandle;
 119     }
 120
 121     /**
 122      * update the value of light (ON/ OFF) from the representation
 123      *
 124      * @param representation new state of light
 125      */
 126     private void put(OcRepresentation representation) {
 127         try {
 128             mIsLightOn = representation.getValue(LIGHT_STATUS_KEY);
 129         } catch (OcException e) {
 130             Log.e(TAG, e.getMessage());
 131         }
 132     }
 133
 134     /**
 135      * helper function to update the current state of the light
 136      */
 137     private void updateRepresentationValues() {
 138         try {
 139             mRepresentation.setValue(LIGHT_STATUS_KEY, mIsLightOn);
 140         } catch (OcException e) {
 141             Log.e(TAG, e.getMessage());
 142         }
 143     }
 144
 145     //******************************************************************************
 146     // End of the OIC specific code
 147     //******************************************************************************
 148     private Context mContext;
 149     private boolean mIsLightOn = false;
 150
 151     private static String TAG = "LightResource: ";
 152     public static final String LIGHT_URI = "/light";
 153     public static final String RESOURCE_TYPELIGHT = "intel.fridge.light";
 154     public static final String LIGHT_STATUS_KEY = "light";
 155
 156     private void logMessage(String msg) {
 157         Intent intent = new Intent(Resource.INTENT);
 158         intent.putExtra(Resource.MESSAGE, msg);
 159         mContext.sendBroadcast(intent);
 160     }
 161 }