bfbc39955047e4f9edaef98173a845ae71b39945
[platform/upstream/iotivity.git] / service / protocol-plugin / plugins / mqtt-fan / src / fanserver.cpp
1 //******************************************************************
2 //
3 // Copyright 2014 Samsung Electronics All Rights Reserved.
4 //
5 //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
6 //
7 // Licensed under the Apache License, Version 2.0 (the "License");
8 // you may not use this file except in compliance with the License.
9 // You may obtain a copy of the License at
10 //
11 //      http://www.apache.org/licenses/LICENSE-2.0
12 //
13 // Unless required by applicable law or agreed to in writing, software
14 // distributed under the License is distributed on an "AS IS" BASIS,
15 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 // See the License for the specific language governing permissions and
17 // limitations under the License.
18 //
19 //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
20
21 ///
22 /// This sample provides steps to define an interface for a resource
23 /// (properties and methods) and host this resource on the server.
24 ///
25
26 #include <functional>
27 #include <pthread.h>
28 #include <cpluff.h>
29
30 #include "OCPlatform.h"
31 #include "OCApi.h"
32 #include "../lib/mosquitto.h"
33 #include "fanserver.h"
34
35 #include <time.h>
36
37
38 using namespace OC;
39 using namespace std;
40 namespace PH = std::placeholders;
41
42 time_t timer;                // Define the timer
43 struct tm *tblock;           // Define a structure for time block
44
45
46 int gObservation = 0;
47 void *ChangeFanRepresentation (void *param);
48 void *handleSlowResponse (void *param, std::shared_ptr<OCResourceRequest> pRequest);
49
50 // Specifies where to notify all observers or list of observers
51 // false: notifies all observers
52 // true: notifies list of observers
53 bool isListOfObservers = false;
54
55 // Specifies secure or non-secure
56 // false: non-secure resource
57 // true: secure resource
58 bool isSecure = false;
59
60 /// Specifies whether Entity handler is going to do slow response or not
61 bool isSlowResponse = false;
62
63 // Forward declaring the entityHandler
64 /// This class represents a single resource named 'fanResource'. This resource has
65 /// two simple properties named 'state' and 'power'
66 typedef struct plugin_data_t plugin_data_t;
67
68 struct plugin_data_t
69 {
70     cp_context_t *ctx;
71     pthread_t m_thread;                                 // 2
72     void *str;
73     bool flag;
74 };
75
76 struct mosquitto *myMosquitto;
77 class FanResource
78 {
79     public:
80         /// Access this property from a TB client
81         std::string m_name;
82         bool m_state;
83         int m_power;
84         int m_health;
85         std::string m_fanUri;
86         OCResourceHandle m_resourceHandle;
87         OCRepresentation m_fanRep;
88         ObservationIds m_interestedObservers;
89
90     public:
91         /// Constructor
92         FanResource(): m_name("John's fan"), m_state(false), m_power(0), m_fanUri("/a/fan")
93         {
94             // Initialize representation
95             m_fanRep.setUri(m_fanUri);
96
97             m_fanRep.setValue("state", m_state);
98             m_fanRep.setValue("power", m_power);
99             m_fanRep.setValue("name", m_name);
100         }
101
102
103         /* Note that this does not need to be a member function: for classes you do not have
104         access to, you can accomplish this with a free function: */
105
106         /// This function internally calls registerResource API.
107         void createResource()
108         {
109             std::string resourceURI = m_fanUri; // URI of the resource
110             std::string resourceTypeName = "core.fan"; // resource type name. In this case, it is fan
111             std::string resourceInterface = DEFAULT_INTERFACE; // resource interface.
112
113             // OCResourceProperty is defined ocstack.h
114             uint8_t resourceProperty = OC_DISCOVERABLE | OC_OBSERVABLE;
115
116             EntityHandler cb = std::bind(&FanResource::entityHandler, this, PH::_1);
117
118             // This will internally create and register the resource.
119             OCStackResult result = OCPlatform::registerResource(
120                                        m_resourceHandle, resourceURI, resourceTypeName,
121                                        resourceInterface, cb, resourceProperty);
122
123             if (OC_STACK_OK != result)
124             {
125                 cout << "Resource creation was unsuccessful\n";
126             }
127         }
128
129         OCStackResult createResource1()
130         {
131             std::string resourceURI = "/a/fan1"; // URI of the resource
132             std::string resourceTypeName = "core.fan"; // resource type name. In this case, it is fan
133             std::string resourceInterface = DEFAULT_INTERFACE; // resource interface.
134
135             // OCResourceProperty is defined ocstack.h
136             uint8_t resourceProperty = OC_DISCOVERABLE | OC_OBSERVABLE;
137
138             EntityHandler cb = std::bind(&FanResource::entityHandler, this, PH::_1);
139
140             OCResourceHandle resHandle;
141
142             // This will internally create and register the resource.
143             OCStackResult result = OCPlatform::registerResource(
144                                        resHandle, resourceURI, resourceTypeName,
145                                        resourceInterface, cb, resourceProperty);
146
147             if (OC_STACK_OK != result)
148             {
149                 cout << "Resource creation was unsuccessful\n";
150             }
151
152             return result;
153         }
154
155         OCResourceHandle getHandle()
156         {
157             return m_resourceHandle;
158         }
159
160         // Puts representation.
161         // Gets values from the representation and
162         // updates the internal state
163         void put(OCRepresentation &rep)
164         {
165             try
166             {
167                 if (rep.getValue("state", m_state))
168                 {
169                     cout << "\t\t\t\t" << "state: " << m_state << endl;
170                 }
171                 else
172                 {
173                     cout << "\t\t\t\t" << "state not found in the representation" << endl;
174                 }
175
176                 if (rep.getValue("power", m_power))
177                 {
178                     cout << "\t\t\t\t" << "power: " << m_power << endl;
179                     if (m_power == 1)
180                     {
181                         mosquitto_publish(myMosquitto, NULL, "actuators/fan", 32, "onfan", 0, true);
182                     }
183                     else
184                     {
185                         mosquitto_publish(myMosquitto, NULL, "actuators/fan", 32, "offfan", 0, true);
186                     }
187                 }
188                 else
189                 {
190                     cout << "\t\t\t\t" << "power not found in the representation" << endl;
191                 }
192             }
193             catch (exception &e)
194             {
195                 cout << e.what() << endl;
196             }
197
198         }
199
200         // Post representation.
201         // Post can create new resource or simply act like put.
202         // Gets values from the representation and
203         // updates the internal state
204         OCRepresentation post(OCRepresentation &rep)
205         {
206             static int first = 1;
207
208             // for the first time it tries to create a resource
209             if (first)
210             {
211                 first = 0;
212
213                 if (OC_STACK_OK == createResource1())
214                 {
215                     OCRepresentation rep1;
216                     rep1.setValue("createduri", std::string("/a/fan1"));
217
218                     return rep1;
219                 }
220             }
221
222             // from second time onwards it just puts
223             put(rep);
224             return get();
225         }
226
227
228         // gets the updated representation.
229         // Updates the representation with latest internal state before
230         // sending out.
231         OCRepresentation get()
232         {
233             m_fanRep.setValue("state", m_state);
234             m_fanRep.setValue("power", m_power);
235
236             return m_fanRep;
237         }
238
239
240         void addType(const std::string &type) const
241         {
242             OCStackResult result = OCPlatform::bindTypeToResource(m_resourceHandle, type);
243             if (OC_STACK_OK != result)
244             {
245                 cout << "Binding TypeName to Resource was unsuccessful\n";
246             }
247         }
248
249         void addInterface(const std::string &interface) const
250         {
251             OCStackResult result = OCPlatform::bindInterfaceToResource(m_resourceHandle, interface);
252             if (OC_STACK_OK != result)
253             {
254                 cout << "Binding TypeName to Resource was unsuccessful\n";
255             }
256         }
257
258     private:
259         // This is just a sample implementation of entity handler.
260         // Entity handler can be implemented in several ways by the manufacturer
261         OCEntityHandlerResult entityHandler(std::shared_ptr<OCResourceRequest> request)
262         {
263             cout << "\tIn Server CPP entity handler:\n";
264             OCEntityHandlerResult ehResult = OC_EH_ERROR;
265             if (request)
266             {
267                 // Get the request type and request flag
268                 std::string requestType = request->getRequestType();
269                 int requestFlag = request->getRequestHandlerFlag();
270
271                 if (requestFlag & RequestHandlerFlag::RequestFlag)
272                 {
273                     cout << "\t\trequestFlag : Request   ===  Handle by FanServer\n";
274                     auto pResponse = std::make_shared<OC::OCResourceResponse>();
275                     pResponse->setRequestHandle(request->getRequestHandle());
276                     pResponse->setResourceHandle(request->getResourceHandle());
277
278                     // If the request type is GET
279                     if (requestType == "GET")
280                     {
281                         cout << "\t\t\trequestType : GET\n";
282                         if (isSlowResponse) // Slow response case
283                         {
284                             static int startedThread = 0;
285                             if (!startedThread)
286                             {
287                                 std::thread t(handleSlowResponse, (void *)this, request);
288                                 startedThread = 1;
289                                 t.detach();
290                             }
291                             ehResult = OC_EH_SLOW;
292                         }
293                         else // normal response case.
294                         {
295                             pResponse->setErrorCode(200);
296                             pResponse->setResponseResult(OC_EH_OK);
297                             pResponse->setResourceRepresentation(get());
298                             if (OC_STACK_OK == OCPlatform::sendResponse(pResponse))
299                             {
300                                 ehResult = OC_EH_OK;
301                             }
302                         }
303                     }
304                     else if (requestType == "PUT")
305                     {
306                         cout << "\t\t\trequestType : PUT\n";
307                         OCRepresentation rep = request->getResourceRepresentation();
308
309                         // Do related operations related to PUT request
310                         // Update the fanResource
311                         put(rep);
312                         pResponse->setErrorCode(200);
313                         pResponse->setResponseResult(OC_EH_OK);
314                         pResponse->setResourceRepresentation(get());
315                         if (OC_STACK_OK == OCPlatform::sendResponse(pResponse))
316                         {
317                             ehResult = OC_EH_OK;
318                         }
319                     }
320                     else if (requestType == "POST")
321                     {
322                         cout << "\t\t\trequestType : POST\n";
323
324                         OCRepresentation rep = request->getResourceRepresentation();
325
326                         // Do related operations related to POST request
327                         OCRepresentation rep_post = post(rep);
328                         pResponse->setResourceRepresentation(rep_post);
329                         pResponse->setErrorCode(200);
330                         if (rep_post.hasAttribute("createduri"))
331                         {
332                             pResponse->setResponseResult(OC_EH_RESOURCE_CREATED);
333                             pResponse->setNewResourceUri(rep_post.getValue<std::string>("createduri"));
334                         }
335
336                         if (OC_STACK_OK == OCPlatform::sendResponse(pResponse))
337                         {
338                             ehResult = OC_EH_OK;
339                         }
340                     }
341                     else if (requestType == "DELETE")
342                     {
343                         // DELETE request operations
344                     }
345                 }
346
347                 if (requestFlag & RequestHandlerFlag::ObserverFlag)
348                 {
349                     ObservationInfo observationInfo = request->getObservationInfo();
350                     if (ObserveAction::ObserveRegister == observationInfo.action)
351                     {
352                         m_interestedObservers.push_back(observationInfo.obsId);
353                     }
354                     else if (ObserveAction::ObserveUnregister == observationInfo.action)
355                     {
356                         m_interestedObservers.erase(std::remove(
357                                                         m_interestedObservers.begin(),
358                                                         m_interestedObservers.end(),
359                                                         observationInfo.obsId),
360                                                     m_interestedObservers.end());
361                     }
362
363                     pthread_t threadId;
364
365                     cout << "\t\trequestFlag : Observer\n";
366                     gObservation = 1;
367                     static int startedThread = 0;
368
369                     // Observation happens on a different thread in ChangeFanRepresentation function.
370                     // If we have not created the thread already, we will create one here.
371                     if (!startedThread)
372                     {
373                         pthread_create (&threadId, NULL, ChangeFanRepresentation, (void *)this);
374                         startedThread = 1;
375                     }
376                     ehResult = OC_EH_OK;
377                 }
378             }
379             else
380             {
381                 std::cout << "Request invalid" << std::endl;
382             }
383
384             return ehResult;
385         }
386 };
387
388 // Create the instance of the resource class (in this case instance of class 'FanResource').
389
390 // ChangeFanRepresentaion is an observation function,
391 // which notifies any changes to the resource to stack
392 // via notifyObservers
393 void *ChangeFanRepresentation (void *param)
394 {
395     FanResource *fanPtr = (FanResource *) param;
396
397     // This function continuously monitors for the changes
398     while (1)
399     {
400         sleep (5);
401
402         if (gObservation)
403         {
404             // If under observation if there are any changes to the fan resource
405             // we call notifyObservors
406             //
407             // For demostration we are changing the power value and notifying.
408             fanPtr->m_power += 10;
409
410             cout << "\nPower updated to : " << fanPtr->m_power << endl;
411             cout << "Notifying observers with resource handle: " << fanPtr->getHandle() << endl;
412
413             OCStackResult result = OC_STACK_OK;
414
415             if (isListOfObservers)
416             {
417                 std::shared_ptr<OCResourceResponse> resourceResponse(new OCResourceResponse());
418
419                 resourceResponse->setErrorCode(200);
420                 resourceResponse->setResourceRepresentation(fanPtr->get(), DEFAULT_INTERFACE);
421
422                 result = OCPlatform::notifyListOfObservers(  fanPtr->getHandle(),
423                          fanPtr->m_interestedObservers,
424                          resourceResponse);
425             }
426             else
427             {
428                 result = OCPlatform::notifyAllObservers(fanPtr->getHandle());
429             }
430
431             if (OC_STACK_NO_OBSERVERS == result)
432             {
433                 cout << "No More observers, stopping notifications" << endl;
434                 gObservation = 0;
435             }
436         }
437     }
438
439     return NULL;
440 }
441
442 void *handleSlowResponse (void *param, std::shared_ptr<OCResourceRequest> pRequest)
443 {
444     // This function handles slow response case
445     FanResource *fanPtr = (FanResource *) param;
446     // Induce a case for slow response by using sleep
447     std::cout << "SLOW response" << std::endl;
448     sleep (10);
449
450     auto pResponse = std::make_shared<OC::OCResourceResponse>();
451     pResponse->setRequestHandle(pRequest->getRequestHandle());
452     pResponse->setResourceHandle(pRequest->getResourceHandle());
453     pResponse->setResourceRepresentation(fanPtr->get());
454     pResponse->setErrorCode(200);
455     pResponse->setResponseResult(OC_EH_OK);
456
457     // Set the slow response flag back to false
458     isSlowResponse = false;
459     OCPlatform::sendResponse(pResponse);
460     return NULL;
461 }
462
463
464 //int start_fanserver(void*)                // 1
465 void *start_fanserver(void *d)      // 2
466 {
467     // Create PlatformConfig object
468     PlatformConfig cfg
469     {
470         OC::ServiceType::InProc,
471         OC::ModeType::Both,
472         "0.0.0.0", // By setting to "0.0.0.0", it binds to all available interfaces
473         0,         // Uses randomly available port
474         OC::QualityOfService::LowQos
475     };
476
477     OCPlatform::Configure(cfg);
478
479     printf("start_fanserver [mosquitto] Null\n");
480     try
481     {
482         FanResource myFanResource;
483         mosquitto_lib_init();
484         myMosquitto = mosquitto_new("MQTT plug-in", true, NULL);
485         if (!myMosquitto)
486         {
487             printf("[mosquitto] Null\n");
488             printf("You need to install mqtt broker\n");
489         }
490         else
491         {
492             printf("Mosquitto is working\n");
493         }
494
495         if (mosquitto_connect(myMosquitto, "127.0.0.1", 1883, 60) != MOSQ_ERR_SUCCESS)
496         {
497             printf("Mosquitto Connection is failed.\n");
498             pthread_exit((void *)0);
499         }
500         printf("Mosquitto Connection is done.\n");
501         myFanResource.createResource();
502         // Get time of day
503         timer = time(NULL);
504         // Converts date/time to a structure
505         tblock = localtime(&timer);
506         // Output ASCII data/time
507         printf("FanReousrce reigishter time is: %s", asctime(tblock));
508         // Perform app tasks
509         while (true)
510         {
511             // some tasks
512         }
513     }
514     catch (OCException e)
515     {
516         //log(e.what());
517     }
518     // No explicit call to stop the platform.
519     // When OCPlatform destructor is invoked, internally we do platform cleanup
520     mosquitto_destroy(myMosquitto);
521
522     mosquitto_lib_cleanup();
523     printf("start_fanserver finish\n");
524     pthread_exit((void *)0);
525 }