ObjectInstanceManager.cpp

00001 /**
00002  * @file    ObjectInstanceManager.cpp
00003  * @brief   mbed CoAP Endpoint Device Management Object Instance Manager
00004  * @author  Doug Anson
00005  * @version 1.0
00006  * @see
00007  *
00008  * Copyright (c) 2016
00009  *
00010  * Licensed under the Apache License, Version 2.0 (the "License");
00011  * you may not use this file except in compliance with the License.
00012  * You may obtain a copy of the License at
00013  *
00014  *     http://www.apache.org/licenses/LICENSE-2.0
00015  *
00016  * Unless required by applicable law or agreed to in writing, software
00017  * distributed under the License is distributed on an "AS IS" BASIS,
00018  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00019  * See the License for the specific language governing permissions and
00020  * limitations under the License.
00021  */
00022  
00023 // Class support
00024 #include "mbed-connector-interface/ObjectInstanceManager.h"
00025  
00026 // mbed-client support
00027 #include "mbed-client/m2minterfacefactory.h"
00028 #include "mbed-client/m2minterfaceobserver.h"
00029 #include "mbed-client/m2minterface.h"
00030 #include "mbed-client/m2mobjectinstance.h"
00031 #include "mbed-client/m2mresource.h"
00032 #include "mbed-client/m2mdevice.h"
00033 #include "mbed-client/m2mfirmware.h"
00034 
00035 // string support
00036 #include <string>
00037  
00038  // constructor
00039  ObjectInstanceManager::ObjectInstanceManager(const Logger *logger,const void *ep) {
00040      this->m_logger = (Logger *)logger;
00041      this->m_ep = (void *)ep;
00042      this->m_object_list.clear();
00043      this->m_instance_number = 0;
00044 }
00045 
00046 // copy constructor
00047 ObjectInstanceManager::ObjectInstanceManager(const ObjectInstanceManager &oim) {
00048     this->m_logger = oim.m_logger;
00049     this->m_ep = oim.m_ep;
00050     this->m_object_list = oim.m_object_list;
00051     this->m_instance_number = oim.m_instance_number;
00052 }
00053 
00054 // destructor
00055 ObjectInstanceManager::~ObjectInstanceManager() {
00056     this->m_object_list.clear();
00057 }
00058 
00059 // create a Dynamic Resource Instance
00060 void *ObjectInstanceManager::createDynamicResourceInstance(char *objID,char *resID,char *resName,int resType,bool observable) {
00061     void *res = NULL;
00062     M2MObjectInstance *instance = (M2MObjectInstance *)this->getOrCreateInstance(objID,resID);
00063     if (instance != NULL) {
00064         // DEBUG
00065         //this->logger()->log("ObjectInstanceManager: Creating Dynamic Resource: ObjID:%s ResID:%s ResName:%s Type:%d Observable: %d",objID,resID,resName,resType,observable);
00066     
00067         // create the resource
00068         res = (void *)instance->create_dynamic_resource(resID,resName,(M2MResourceInstance::ResourceType)resType,observable);
00069     }
00070     return res;   
00071 }
00072 
00073 // create a Static Resource Instance
00074 void *ObjectInstanceManager::createStaticResourceInstance(char *objID,char *resID,char *resName,int resType,void *data,int data_length) {
00075     void *res = NULL;
00076     M2MObjectInstance *instance = (M2MObjectInstance *)this->getOrCreateInstance(objID,resID);
00077     if (instance != NULL) {
00078         // DEBUG
00079         //this->logger()->log("ObjectInstanceManager: Creating Static Resource: ObjID:%s ResID:%s ResName:%s Type:%d DataLength: %d",objID,resID,resName,resType,data_length);
00080     
00081         // create the resource
00082         res = (void *)instance->create_static_resource(resID,resName,(M2MResourceInstance::ResourceType)resType,(uint8_t *)data,(uint8_t)data_length);
00083     }
00084     return res;  
00085 }
00086 
00087 // Get the instance number of the resource just created
00088 int ObjectInstanceManager::getLastCreatedInstanceNumber() {
00089     return this->m_instance_number;
00090 }
00091 
00092 // create and/or retrieve a given instance
00093 void *ObjectInstanceManager::getOrCreateInstance(char *objID,char *resID) {
00094     void *instance = NULL;
00095     NamedPointer *obj_np = this->getOrCreateObject(objID);
00096     if (obj_np != NULL) {
00097         NamedPointerList *list = (NamedPointerList *)obj_np->list();
00098         NamedPointer *inst_np = this->getNamedPointer(resID,list);
00099         if (inst_np != NULL) {
00100             // instance already exists... so create another one (n)...
00101             M2MObject *obj = (M2MObject *)(obj_np->ptr());
00102             if (obj != NULL) {
00103                 instance = (void *)obj->create_object_instance();
00104                 this->m_instance_number = inst_np->index()+1;
00105                 NamedPointer new_inst_np(string(resID),instance,this->m_instance_number);
00106                 list->push_back(new_inst_np); 
00107             }
00108         }
00109         else if (list->size() > 0) {
00110             // 0th instance exists... parent the resource to it...
00111             this->m_instance_number = 0;
00112             instance = (void *)(list->at(0).ptr());
00113         }
00114         else {            
00115             // no instance does not exist so create one (0)..
00116             M2MObject *obj = (M2MObject *)(obj_np->ptr());
00117             if (obj != NULL) {
00118                 instance = (void *)obj->create_object_instance();
00119                 this->m_instance_number = 0;
00120                 NamedPointer new_inst_np(string(resID),instance,this->m_instance_number);
00121                 list->push_back(new_inst_np);
00122             }
00123         }
00124     }
00125     else {
00126         // DEBUG
00127         this->logger()->log("getOrCreateInstance: unable to create object instance for objID:%s",objID); 
00128     }
00129     return instance;
00130 }
00131 
00132 // create and/or retrieve a given objectID
00133 NamedPointer *ObjectInstanceManager::getOrCreateObject(char *objID) {
00134     NamedPointer *result = NULL;
00135     if (objID != NULL) {
00136         result = this->getNamedPointer(objID,&(this->m_object_list));
00137     }
00138     if (result == NULL) {            
00139         void *obj = (void *)M2MInterfaceFactory::create_object(objID);
00140         NamedPointer new_np(string(objID),obj,0);
00141         this->m_object_list.push_back(new_np);
00142         result = this->getNamedPointer(objID,&(this->m_object_list));
00143     }
00144     return result;
00145 }
00146 
00147 // get the named pointer for a given id
00148 NamedPointer *ObjectInstanceManager::getNamedPointer(const char *id,NamedPointerList *list) {
00149     NamedPointer *result = NULL;
00150     bool found = false;
00151     for(int i=0;list != NULL && i<(int)list->size() && !found;++i) {
00152         char *tmp_id = (char *)list->at(i).name().c_str();
00153         if (id != NULL && tmp_id != NULL && strcmp(id,tmp_id) == 0) {
00154             found = true;
00155             result = &(list->at(i));
00156         }
00157     }
00158     return result;
00159 }
00160 
00161 // Get our Object List
00162 NamedPointerList ObjectInstanceManager::getObjectList() {
00163     return this->m_object_list;
00164 }
00165 
00166 // Logger
00167 Logger *ObjectInstanceManager::logger() {
00168     return this->m_logger;
00169 }
00170