mbed client lightswitch demo

Dependencies:   mbed Socket lwip-eth lwip-sys lwip

Fork of mbed-client-classic-example-lwip by Austin Blackstone

Revision:
11:cada08fc8a70
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-client/source/m2mobjectinstance.cpp	Thu Jun 09 17:08:36 2016 +0000
@@ -0,0 +1,743 @@
+/*
+ * Copyright (c) 2015 ARM Limited. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "mbed-client/m2mobjectinstance.h"
+#include "mbed-client/m2mobject.h"
+#include "mbed-client/m2mconstants.h"
+#include "mbed-client/m2mresource.h"
+#include "mbed-client/m2mresource.h"
+#include "mbed-client/m2mobservationhandler.h"
+#include "include/m2mtlvserializer.h"
+#include "include/m2mtlvdeserializer.h"
+#include "include/nsdllinker.h"
+#include "include/m2mreporthandler.h"
+#include "ns_trace.h"
+
+M2MObjectInstance& M2MObjectInstance::operator=(const M2MObjectInstance& other)
+{
+    if (this != &other) { // protect against invalid self-assignment
+        if(!other._resource_list.empty()){
+            M2MResource* ins = NULL;
+            M2MResourceList::const_iterator it;
+            it = other._resource_list.begin();
+            for (; it!=other._resource_list.end(); it++ ) {
+                ins = *it;
+                _resource_list.push_back(new M2MResource(*ins));
+            }
+        }
+    }
+    return *this;
+}
+
+M2MObjectInstance::M2MObjectInstance(const M2MObjectInstance& other)
+: M2MBase(other),
+  _object_callback(other._object_callback)
+{
+    this->operator=(other);
+}
+
+M2MObjectInstance::M2MObjectInstance(const String &object_name,
+                                     M2MObjectCallback &object_callback)
+: M2MBase(object_name,M2MBase::Dynamic),
+  _object_callback(object_callback)
+{
+    M2MBase::set_base_type(M2MBase::ObjectInstance);
+
+}
+
+M2MObjectInstance::~M2MObjectInstance()
+{
+    if(!_resource_list.empty()) {
+        M2MResource* res = NULL;
+        M2MResourceList::const_iterator it;
+        it = _resource_list.begin();
+        for (; it!=_resource_list.end(); it++ ) {
+            //Free allocated memory for resources.
+            res = *it;
+            delete res;
+            res = NULL;
+        }
+        _resource_list.clear();
+    }
+}
+
+M2MResource* M2MObjectInstance::create_static_resource(const String &resource_name,
+                                                       const String &resource_type,
+                                                       M2MResourceInstance::ResourceType type,
+                                                       const uint8_t *value,
+                                                       const uint8_t value_length,
+                                                       bool multiple_instance)
+{
+    tr_debug("M2MObjectInstance::create_static_resource(resource_name %s)",resource_name.c_str());
+    M2MResource *res = NULL;
+    if( resource_name.empty() || resource_name.size() > MAX_ALLOWED_STRING_LENGTH){
+        return res;
+    }
+    res = new M2MResource(*this,resource_name, resource_type, type,
+                               value, value_length, multiple_instance);
+    if(res) {
+        _resource_list.push_back(res);
+        if(M2MBase::coap_content_type() == COAP_CONTENT_OMA_TLV_TYPE) {
+            res->set_coap_content_type(COAP_CONTENT_OMA_TLV_TYPE);
+        }
+    }
+    return res;
+}
+
+M2MResource* M2MObjectInstance::create_dynamic_resource(const String &resource_name,
+                                                const String &resource_type,
+                                                M2MResourceInstance::ResourceType type,
+                                                bool observable,
+                                                bool multiple_instance)
+{
+    tr_debug("M2MObjectInstance::create_dynamic_resource(resource_name %s)",resource_name.c_str());
+    M2MResource *res = NULL;
+    if( resource_name.empty() || resource_name.size() > MAX_ALLOWED_STRING_LENGTH){
+        return res;
+    }
+    res = new M2MResource(*this,resource_name, resource_type, type,
+                          observable, multiple_instance);
+    if(res) {
+        _resource_list.push_back(res);
+        if(M2MBase::coap_content_type() == COAP_CONTENT_OMA_TLV_TYPE) {
+            res->set_coap_content_type(COAP_CONTENT_OMA_TLV_TYPE);
+        }
+    }
+    return res;
+}
+
+M2MResourceInstance* M2MObjectInstance::create_static_resource_instance(const String &resource_name,
+                                                                        const String &resource_type,
+                                                                        M2MResourceInstance::ResourceType type,
+                                                                        const uint8_t *value,
+                                                                        const uint8_t value_length,
+                                                                        uint16_t instance_id)
+{
+    tr_debug("M2MObjectInstance::create_static_resource_instance(resource_name %s)",resource_name.c_str());
+    M2MResourceInstance *instance = NULL;
+    if(resource_name.empty() || resource_name.size() > MAX_ALLOWED_STRING_LENGTH){
+        return instance;
+    }
+    M2MResource *res = resource(resource_name);
+    if(!res) {
+        res = new M2MResource(*this,resource_name, resource_type, type,
+                              value, value_length, true);
+        _resource_list.push_back(res);
+        res->set_operation(M2MBase::GET_ALLOWED);
+        res->set_observable(false);
+        if(M2MBase::coap_content_type() == COAP_CONTENT_OMA_TLV_TYPE) {
+            res->set_coap_content_type(COAP_CONTENT_OMA_TLV_TYPE);
+        }
+    }
+    if(res->supports_multiple_instances()&& (res->resource_instance(instance_id) == NULL)) {
+        instance = new M2MResourceInstance(resource_name, resource_type, type,
+                                           value, value_length,*this);
+        if(instance) {
+            instance->set_operation(M2MBase::GET_ALLOWED);
+            instance->set_observable(false);
+            instance->set_instance_id(instance_id);
+            if(M2MBase::coap_content_type() == COAP_CONTENT_OMA_TLV_TYPE) {
+                instance->set_coap_content_type(COAP_CONTENT_OMA_TLV_TYPE);
+            }
+            res->add_resource_instance(instance);
+        }
+    }
+    return instance;
+}
+
+M2MResourceInstance* M2MObjectInstance::create_dynamic_resource_instance(const String &resource_name,
+                                                                         const String &resource_type,
+                                                                         M2MResourceInstance::ResourceType type,
+                                                                         bool observable,
+                                                                         uint16_t instance_id)
+{
+    tr_debug("M2MObjectInstance::create_dynamic_resource_instance(resource_name %s)",resource_name.c_str());
+    M2MResourceInstance *instance = NULL;
+    if(resource_name.empty() || resource_name.size() > MAX_ALLOWED_STRING_LENGTH){
+        return instance;
+    }
+    M2MResource *res = resource(resource_name);
+    if(!res) {
+        res = new M2MResource(*this,resource_name, resource_type, type,
+                          observable, true);
+        _resource_list.push_back(res);
+        res->set_operation(M2MBase::GET_PUT_ALLOWED);
+        res->set_observable(false);
+        if(M2MBase::coap_content_type() == COAP_CONTENT_OMA_TLV_TYPE) {
+            res->set_coap_content_type(COAP_CONTENT_OMA_TLV_TYPE);
+        }
+    }
+    if(res->supports_multiple_instances() && (res->resource_instance(instance_id) == NULL)) {
+        instance = new M2MResourceInstance(resource_name, resource_type, type,*this);
+        if(instance) {
+            instance->set_operation(M2MBase::GET_PUT_ALLOWED);
+            instance->set_observable(observable);
+            instance->set_instance_id(instance_id);
+            if(M2MBase::coap_content_type() == COAP_CONTENT_OMA_TLV_TYPE) {
+                instance->set_coap_content_type(COAP_CONTENT_OMA_TLV_TYPE);
+            }
+            res->add_resource_instance(instance);
+        }
+    }
+    return instance;
+}
+
+bool M2MObjectInstance::remove_resource(const String &resource_name)
+{
+    tr_debug("M2MObjectInstance::remove_resource(resource_name %s)",
+             resource_name.c_str());
+    bool success = false;
+    if(!_resource_list.empty()) {
+         M2MResource* res = NULL;
+         M2MResourceList::const_iterator it;
+         it = _resource_list.begin();
+         int pos = 0;
+         for ( ; it != _resource_list.end(); it++, pos++ ) {
+             if(((*it)->name() == resource_name)) {
+                // Resource found and deleted.
+                res = *it;
+
+                char *obj_inst_id = (char*)malloc(20);
+                if(obj_inst_id) {
+                    snprintf(obj_inst_id, 20,"%d",instance_id());
+
+                    String obj_name = name();
+                    obj_name += String("/");
+                    obj_name += String(obj_inst_id);
+                    obj_name += String("/");
+                    obj_name += (*it)->name();
+
+                    free(obj_inst_id);
+
+
+                    remove_resource_from_coap(obj_name);
+                    delete res;
+                    res = NULL;
+                    _resource_list.erase(pos);
+                    success = true;
+                }
+                 break;
+             }
+         }
+     }
+    return success;
+}
+
+bool M2MObjectInstance::remove_resource_instance(const String &resource_name,
+                                                 uint16_t inst_id)
+{
+    tr_debug("M2MObjectInstance::remove_resource_instance(resource_name %s inst_id %d)",
+             resource_name.c_str(), inst_id);
+    bool success = false;
+    M2MResource *res = resource(resource_name);
+    if(res) {
+        M2MResourceInstanceList list = res->resource_instances();
+        M2MResourceInstanceList::const_iterator it;
+        it = list.begin();
+        for ( ; it != list.end(); it++) {
+            if((*it)->instance_id() == inst_id) {
+                char *obj_inst_id = (char*)malloc(20);
+                if(obj_inst_id) {
+                    snprintf(obj_inst_id, 20,"%d",instance_id());
+
+                    String obj_name = name();
+                    obj_name += String("/");
+                    obj_name += String(obj_inst_id);
+                    obj_name += String("/");
+                    obj_name += resource_name;
+
+                    free(obj_inst_id);
+
+                    char *res_inst_id = (char*)malloc(20);
+                    if(res_inst_id) {
+                        snprintf(res_inst_id, 20,"%d",inst_id);
+                        obj_name += String("/");
+                        obj_name += String(res_inst_id);
+
+                        free(res_inst_id);
+
+                        remove_resource_from_coap(obj_name);
+                        success = res->remove_resource_instance(inst_id);
+                        if(res->resource_instance_count() == 0) {
+                            M2MResourceList::const_iterator itr;
+                            itr = _resource_list.begin();
+                            int pos = 0;
+                            for ( ; itr != _resource_list.end(); itr++, pos++ ) {
+                                if(((*itr)->name() == resource_name)) {
+                                    delete res;
+                                    res = NULL;
+                                    _resource_list.erase(pos);
+                                    break;
+                                }
+                            }
+                        }
+                    }
+                }
+                break;
+            }
+        }
+    }
+    return success;
+}
+
+M2MResource* M2MObjectInstance::resource(const String &resource) const
+{
+    M2MResource *res = NULL;
+    if(!_resource_list.empty()) {
+        M2MResourceList::const_iterator it;
+        it = _resource_list.begin();
+        for (; it!=_resource_list.end(); it++ ) {
+            if((*it)->name() == resource) {
+                res = *it;
+                break;
+            }
+        }
+    }
+    return res;
+}
+
+const M2MResourceList& M2MObjectInstance::resources() const
+{
+    return _resource_list;
+}
+
+uint16_t M2MObjectInstance::resource_count() const
+{
+    uint16_t count = 0;
+    if(!_resource_list.empty()) {
+        M2MResourceList::const_iterator it;
+        it = _resource_list.begin();
+        for ( ; it != _resource_list.end(); it++ ) {
+            if((*it)->supports_multiple_instances()) {
+                count += (*it)->resource_instance_count();
+            } else {
+                count++;
+            }
+        }
+    }
+    return count;
+}
+
+uint16_t M2MObjectInstance::resource_count(const String& resource) const
+{
+    uint16_t count = 0;
+    if(!_resource_list.empty()) {
+        M2MResourceList::const_iterator it;
+        it = _resource_list.begin();
+        for ( ; it != _resource_list.end(); it++ ) {
+            if((*it)->name() == resource) {
+                if((*it)->supports_multiple_instances()) {
+                    count += (*it)->resource_instance_count();
+                } else {
+                    count++;
+                }
+            }
+        }
+    }
+    return count;
+}
+
+M2MBase::BaseType M2MObjectInstance::base_type() const
+{
+    return M2MBase::base_type();
+}
+
+void M2MObjectInstance::add_observation_level(M2MBase::Observation observation_level)
+{
+    M2MBase::add_observation_level(observation_level);
+    if(!_resource_list.empty()) {
+        M2MResourceList::const_iterator it;
+        it = _resource_list.begin();
+        for ( ; it != _resource_list.end(); it++ ) {            
+            (*it)->add_observation_level(observation_level);
+        }
+    }
+}
+
+void M2MObjectInstance::remove_observation_level(M2MBase::Observation observation_level)
+{
+    M2MBase::remove_observation_level(observation_level);
+    if(!_resource_list.empty()) {
+        M2MResourceList::const_iterator it;
+        it = _resource_list.begin();
+        for ( ; it != _resource_list.end(); it++ ) {            
+            (*it)->remove_observation_level(observation_level);
+        }
+    }
+}
+
+sn_coap_hdr_s* M2MObjectInstance::handle_get_request(nsdl_s *nsdl,
+                                                     sn_coap_hdr_s *received_coap_header,
+                                                     M2MObservationHandler *observation_handler)
+{
+    tr_debug("M2MObjectInstance::handle_get_request()");
+    sn_coap_msg_code_e msg_code = COAP_MSG_CODE_RESPONSE_CONTENT;
+    sn_coap_hdr_s * coap_response = sn_nsdl_build_response(nsdl,
+                                                           received_coap_header,
+                                                           msg_code);
+    uint8_t * data = NULL;
+    uint32_t  data_length = 0;
+    //TODO: GET for Object is not yet implemented.
+    // Need to first fix C library and then implement on C++ side.
+    if(received_coap_header) {
+        // process the GET if we have registered a callback for it
+        if ((operation() & SN_GRS_GET_ALLOWED) != 0) {
+            if(coap_response) {
+                uint16_t coap_content_type = 0;
+                bool content_type_present = false;
+                if(received_coap_header->content_type_ptr) {
+                    content_type_present = true;
+                    coap_response->content_type_ptr = (uint8_t*)malloc(received_coap_header->content_type_len);
+                    if(coap_response->content_type_ptr) {
+                        memset(coap_response->content_type_ptr, 0, received_coap_header->content_type_len);
+                        memcpy(coap_response->content_type_ptr,
+                               received_coap_header->content_type_ptr,
+                               received_coap_header->content_type_len);
+                        coap_response->content_type_len = received_coap_header->content_type_len;
+                        for(uint8_t i = 0; i < coap_response->content_type_len; i++) {
+                            coap_content_type = (coap_content_type << 8) + (coap_response->content_type_ptr[i] & 0xFF);
+                        }
+                     }
+                }
+                if(!content_type_present &&
+                   M2MBase::coap_content_type() == COAP_CONTENT_OMA_TLV_TYPE) {
+                    coap_content_type = COAP_CONTENT_OMA_TLV_TYPE;
+                }
+
+                tr_debug("M2MObjectInstance::handle_get_request() - Request Content-Type %d", coap_content_type);
+
+                // fill in the CoAP response payload
+                if(COAP_CONTENT_OMA_TLV_TYPE == coap_content_type) {
+                    M2MTLVSerializer *serializer = new M2MTLVSerializer();
+                    if(serializer) {
+                        data = serializer->serialize(_resource_list, data_length);
+                        delete serializer;
+                    }
+                } else {
+                    msg_code = COAP_MSG_CODE_RESPONSE_UNSUPPORTED_CONTENT_FORMAT; // Content format not supported
+                }
+
+                coap_response->payload_len = data_length;
+                coap_response->payload_ptr = data;
+
+                if(data) {
+                    coap_response->options_list_ptr = (sn_coap_options_list_s*)malloc(sizeof(sn_coap_options_list_s));
+                    memset(coap_response->options_list_ptr, 0, sizeof(sn_coap_options_list_s));
+
+                    coap_response->options_list_ptr->max_age_ptr = (uint8_t*)malloc(1);
+                    memset(coap_response->options_list_ptr->max_age_ptr,0,1);
+                    coap_response->options_list_ptr->max_age_len = 1;
+
+
+                    if(received_coap_header->token_ptr) {
+                        tr_debug("M2MObjectInstance::handle_get_request - Sets Observation Token to resource");
+                        set_observation_token(received_coap_header->token_ptr,
+                                              received_coap_header->token_len);
+                    }
+                    if(received_coap_header->options_list_ptr) {
+                        if(received_coap_header->options_list_ptr->observe) {
+                            if (is_observable()) {
+                                uint32_t number = 0;
+                                uint8_t observe_option = 0;
+                                if(received_coap_header->options_list_ptr->observe_ptr) {
+                                    observe_option = *received_coap_header->options_list_ptr->observe_ptr;
+                                }
+                                if(START_OBSERVATION == observe_option) {
+                                    tr_debug("M2MObjectInstance::handle_get_request - Starts Observation");
+                                    // If the observe length is 0 means register for observation.
+                                    if(received_coap_header->options_list_ptr->observe_len != 0) {
+                                        for(int i=0;i < received_coap_header->options_list_ptr->observe_len; i++) {
+                                            number = (*(received_coap_header->options_list_ptr->observe_ptr + i) & 0xff) <<
+                                                     8*(received_coap_header->options_list_ptr->observe_len- 1 - i);
+                                        }
+                                    }
+                                    // If the observe value is 0 means register for observation.
+                                    if(number == 0) {
+                                        tr_debug("M2MObjectInstance::handle_get_request - Put Resource under Observation");
+                                        set_under_observation(true,observation_handler);
+                                        add_observation_level(M2MBase::OI_Attribute);
+
+                                        uint8_t *obs_number = (uint8_t*)malloc(3);
+                                        memset(obs_number,0,3);
+                                        uint8_t observation_number_length = 1;
+
+                                        uint16_t number = observation_number();
+
+                                        tr_debug("M2MObjectInstance::handle_get_request - Observation Number %d", number);
+                                        obs_number[0] = ((number>>8) & 0xFF);
+                                        obs_number[1] = (number & 0xFF);
+
+                                        if(number > 0xFF) {
+                                            observation_number_length = 2;
+                                        }
+                                        coap_response->options_list_ptr->observe_ptr = obs_number;
+                                        coap_response->options_list_ptr->observe_len = observation_number_length;
+                                    }
+                                } else if (STOP_OBSERVATION == observe_option) {
+                                    tr_debug("M2MObjectInstance::handle_get_request - Stops Observation");
+                                    set_under_observation(false,NULL);
+                                    remove_observation_level(M2MBase::OI_Attribute);
+
+                                }
+                                msg_code = COAP_MSG_CODE_RESPONSE_CONTENT;
+                            }
+                            else {
+                                msg_code = COAP_MSG_CODE_RESPONSE_METHOD_NOT_ALLOWED;
+                            }
+                        }
+                    }
+                } else {
+                    msg_code = COAP_MSG_CODE_RESPONSE_UNSUPPORTED_CONTENT_FORMAT; // Content format not supported
+                }
+            }
+        }else {
+            tr_error("M2MObjectInstance::handle_get_request - Return COAP_MSG_CODE_RESPONSE_METHOD_NOT_ALLOWED");
+            // Operation is not allowed.
+            msg_code = COAP_MSG_CODE_RESPONSE_METHOD_NOT_ALLOWED;
+        }        
+    } else {
+        msg_code = COAP_MSG_CODE_RESPONSE_METHOD_NOT_ALLOWED;
+    }
+    if(coap_response) {
+        coap_response->msg_code = msg_code;
+    }
+    return coap_response;
+}
+
+sn_coap_hdr_s* M2MObjectInstance::handle_put_request(nsdl_s *nsdl,
+                                                     sn_coap_hdr_s *received_coap_header,
+                                                     M2MObservationHandler *observation_handler)
+{
+    tr_debug("M2MObjectInstance::handle_put_request()");
+    sn_coap_msg_code_e msg_code = COAP_MSG_CODE_RESPONSE_CHANGED; // 2.04
+    sn_coap_hdr_s * coap_response = sn_nsdl_build_response(nsdl,
+                                                           received_coap_header,
+                                                           msg_code);;
+    if(received_coap_header) {
+        if ((operation() & SN_GRS_PUT_ALLOWED) != 0) {            
+            uint16_t coap_content_type = 0;
+            bool content_type_present = false;
+            if(received_coap_header->content_type_ptr) {
+                content_type_present = true;
+                if(coap_response) {
+                    coap_response->content_type_ptr = (uint8_t*)malloc(received_coap_header->content_type_len);
+                    if(coap_response->content_type_ptr) {
+                        memset(coap_response->content_type_ptr, 0, received_coap_header->content_type_len);
+                        memcpy(coap_response->content_type_ptr,
+                               received_coap_header->content_type_ptr,
+                               received_coap_header->content_type_len);
+                        coap_response->content_type_len = received_coap_header->content_type_len;
+                        for(uint8_t i = 0; i < coap_response->content_type_len; i++) {
+                            coap_content_type = (coap_content_type << 8) + (coap_response->content_type_ptr[i] & 0xFF);
+                        }
+                    }
+                }
+            }
+            if(!content_type_present &&
+               M2MBase::coap_content_type() == COAP_CONTENT_OMA_TLV_TYPE) {
+                coap_content_type = COAP_CONTENT_OMA_TLV_TYPE;
+            }
+
+            tr_debug("M2MObjectInstance::handle_put_request() - Request Content-Type %d", coap_content_type);
+
+            if(COAP_CONTENT_OMA_TLV_TYPE == coap_content_type) {
+                M2MTLVDeserializer::Error error = M2MTLVDeserializer::None;
+                M2MTLVDeserializer *deserializer = new M2MTLVDeserializer();
+                if(deserializer && received_coap_header->payload_ptr) {
+                    error = deserializer->deserialize_resources(received_coap_header->payload_ptr,
+                                                                received_coap_header->payload_len,
+                                                                *this,
+                                                                M2MTLVDeserializer::Put);
+                    switch(error) {
+                        case M2MTLVDeserializer::None:
+                            if(observation_handler) {
+                                observation_handler->value_updated(this);
+                            }
+                            msg_code = COAP_MSG_CODE_RESPONSE_CHANGED;
+                            break;
+                        case M2MTLVDeserializer::NotFound:
+                            msg_code = COAP_MSG_CODE_RESPONSE_NOT_FOUND;
+                            break;
+                        case M2MTLVDeserializer::NotAllowed:
+                            msg_code = COAP_MSG_CODE_RESPONSE_METHOD_NOT_ALLOWED;
+                            break;
+                        case M2MTLVDeserializer::NotValid:
+                            msg_code = COAP_MSG_CODE_RESPONSE_BAD_REQUEST;
+                            break;
+                    }
+                    delete deserializer;
+                }
+            } else {
+                msg_code =COAP_MSG_CODE_RESPONSE_UNSUPPORTED_CONTENT_FORMAT;
+            } // if(COAP_CONTENT_OMA_TLV_TYPE == coap_content_type)
+            if(!received_coap_header->payload_ptr &&
+               received_coap_header->options_list_ptr &&
+               received_coap_header->options_list_ptr->uri_query_ptr) {
+                char *query = (char*)malloc(received_coap_header->options_list_ptr->uri_query_len+1);
+                if (query){
+                    memset(query, 0, received_coap_header->options_list_ptr->uri_query_len+1);
+                    memcpy(query,
+                        received_coap_header->options_list_ptr->uri_query_ptr,
+                        received_coap_header->options_list_ptr->uri_query_len);
+                    memset(query + received_coap_header->options_list_ptr->uri_query_len,'\0',1);//String terminator
+                   tr_debug("M2MObjectInstance::handle_put_request() - Query %s", query);
+                    // if anything was updated, re-initialize the stored notification attributes
+                    if (!handle_observation_attribute(query)){
+                        tr_debug("M2MObjectInstance::handle_put_request() - Invalid query");
+                        msg_code = COAP_MSG_CODE_RESPONSE_BAD_REQUEST; // 4.00
+                    } else {
+                        msg_code =COAP_MSG_CODE_RESPONSE_CHANGED;
+                    }
+                    free(query);
+                }
+            }
+        } else {
+            // Operation is not allowed.
+            tr_error("M2MObjectInstance::handle_put_request() - COAP_MSG_CODE_RESPONSE_METHOD_NOT_ALLOWED");
+            msg_code = COAP_MSG_CODE_RESPONSE_METHOD_NOT_ALLOWED;
+        }
+    } else {
+       msg_code = COAP_MSG_CODE_RESPONSE_METHOD_NOT_ALLOWED;
+    }
+    if(coap_response) {
+        coap_response->msg_code = msg_code;
+    }
+    return coap_response;
+}
+
+sn_coap_hdr_s* M2MObjectInstance::handle_post_request(nsdl_s *nsdl,
+                                                      sn_coap_hdr_s *received_coap_header,
+                                                      M2MObservationHandler *observation_handler)
+{
+    tr_debug("M2MObjectInstance::handle_post_request()");
+    sn_coap_msg_code_e msg_code = COAP_MSG_CODE_RESPONSE_CHANGED; // 2.04
+    sn_coap_hdr_s * coap_response = sn_nsdl_build_response(nsdl,
+                                                           received_coap_header,
+                                                           msg_code);
+    if(received_coap_header) {
+        if ((operation() & SN_GRS_POST_ALLOWED) != 0) {
+            uint16_t coap_content_type = 0;
+            bool content_type_present = false;
+            if(received_coap_header->content_type_ptr) {
+                content_type_present = true;
+                if(coap_response) {
+                    coap_response->content_type_ptr = (uint8_t*)malloc(received_coap_header->content_type_len);
+                    if(coap_response->content_type_ptr) {
+                        memset(coap_response->content_type_ptr, 0, received_coap_header->content_type_len);
+                        memcpy(coap_response->content_type_ptr,
+                               received_coap_header->content_type_ptr,
+                               received_coap_header->content_type_len);
+                        coap_response->content_type_len = received_coap_header->content_type_len;
+                        for(uint8_t i = 0; i < coap_response->content_type_len; i++) {
+                            coap_content_type = (coap_content_type << 8) + (coap_response->content_type_ptr[i] & 0xFF);
+                        }
+                    }
+                }
+            }
+            if(!content_type_present &&
+               M2MBase::coap_content_type() == COAP_CONTENT_OMA_TLV_TYPE) {
+                coap_content_type = COAP_CONTENT_OMA_TLV_TYPE;
+            }
+
+            tr_debug("M2MObjectInstance::handle_post_request() - Request Content-Type %d", coap_content_type);
+
+            if(COAP_CONTENT_OMA_TLV_TYPE == coap_content_type) {
+                M2MTLVDeserializer *deserializer = new M2MTLVDeserializer();
+                if(deserializer) {
+                    String obj_name = "";
+                    char *obj_inst_id = NULL;
+                    char *resource_id = NULL;
+                    M2MTLVDeserializer::Error error = M2MTLVDeserializer::None;
+                    error = deserializer->deserialize_resources(received_coap_header->payload_ptr,
+                                                                received_coap_header->payload_len,
+                                                                *this,
+                                                                M2MTLVDeserializer::Post);
+
+                    uint16_t instance_id = deserializer->instance_id(received_coap_header->payload_ptr);
+                    switch(error) {
+                        case M2MTLVDeserializer::None:
+                            if(observation_handler) {
+                                observation_handler->value_updated(this);
+                            }                            
+                            coap_response->options_list_ptr = (sn_coap_options_list_s*)malloc(sizeof(sn_coap_options_list_s));
+                            if (coap_response->options_list_ptr) {
+                                memset(coap_response->options_list_ptr, 0, sizeof(sn_coap_options_list_s));
+
+                                resource_id = (char*)malloc(10);
+                                obj_inst_id = (char*)malloc(10);
+                                snprintf(resource_id, 10, "%d",instance_id);
+                                snprintf(obj_inst_id, 10, "%d",M2MBase::instance_id());
+
+                                obj_name += M2MBase::name();
+                                obj_name += "/";
+                                obj_name += obj_inst_id;
+                                obj_name += "/";
+                                obj_name += resource_id;
+
+                                coap_response->options_list_ptr->location_path_len = obj_name.length();
+                                if (coap_response->options_list_ptr->location_path_len != 0) {
+                                    coap_response->options_list_ptr->location_path_ptr =
+                                            (uint8_t*)malloc(coap_response->options_list_ptr->location_path_len);
+                                    if (coap_response->options_list_ptr->location_path_ptr) {
+                                        memcpy(coap_response->options_list_ptr->location_path_ptr,
+                                               obj_name.c_str(),
+                                               coap_response->options_list_ptr->location_path_len);
+                                    }
+                                }
+
+                                free(obj_inst_id);
+                                free(resource_id);
+                            }
+                            msg_code = COAP_MSG_CODE_RESPONSE_CREATED;
+                            break;
+                        case M2MTLVDeserializer::NotAllowed:
+                            msg_code = COAP_MSG_CODE_RESPONSE_METHOD_NOT_ALLOWED;
+                            break;
+                        case M2MTLVDeserializer::NotValid:
+                            msg_code = COAP_MSG_CODE_RESPONSE_BAD_REQUEST;
+                            break;
+                        default:
+                            break;
+                    }
+                    delete deserializer;
+                }
+            } else {
+                msg_code =COAP_MSG_CODE_RESPONSE_UNSUPPORTED_CONTENT_FORMAT;
+            } // if(COAP_CONTENT_OMA_TLV_TYPE == coap_content_type)
+        } else {
+            // Operation is not allowed.
+            tr_error("M2MObjectInstance::handle_post_request() - COAP_MSG_CODE_RESPONSE_METHOD_NOT_ALLOWED");
+            msg_code = COAP_MSG_CODE_RESPONSE_METHOD_NOT_ALLOWED;
+        }
+    } else {
+        msg_code = COAP_MSG_CODE_RESPONSE_METHOD_NOT_ALLOWED;
+    }
+    if(coap_response) {
+        coap_response->msg_code = msg_code;
+    }
+    return coap_response;
+}
+
+void M2MObjectInstance::notification_update(M2MBase::Observation observation_level)
+{
+    if(M2MBase::O_Attribute == observation_level) {
+        _object_callback.notification_update();
+    } else {
+        M2MReportHandler *report_handler = M2MBase::report_handler();
+        if(report_handler && is_observable()) {
+            report_handler->set_notification_trigger();
+        }
+    }
+}