Diff: api/InstancePointerTableHelper.h

Revision:

0:b438482ebbfc

Child:

2:853f9ecc12df

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/api/InstancePointerTableHelper.h	Tue Jan 27 22:23:51 2015 +0000
@@ -0,0 +1,67 @@
+/**
+ * @file    InstancePointerTableHelper.h
+ * @brief   instance pointer table helper functions for DynamicResource
+ * @author  Doug Anson
+ * @version 1.0
+ * @see     
+ *
+ * Copyright (c) 2014
+ *
+ * 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.
+ */
+ 
+ #ifndef __INSTANCE_POINTER_TABLE_HELPER_H__
+ #define __INSTANCE_POINTER_TABLE_HELPER_H__
+
+// InstancePointerTable 
+ #include "InstancePointerTable.h"
+ extern Logger logger;
+ InstancePointerTable              __nsdl_lookup_table(&logger);         // Instance Pointer Table 
+ 
+ 
+ // lookup a DynamicResource instance indexed by our resource URI as the key
+ extern "C" DynamicResource *__lookup_instance_pointer(const char *uri,const int uri_length) {
+    if (uri != NULL && uri_length > 0) {
+        string key(uri,uri_length);
+        return (DynamicResource *)__nsdl_lookup_table.get(key);
+    }
+    return NULL;
+ }
+ 
+ // callback function for NSDL library to call into... ASSUMPTION: 1 and only 1 DynamicResource<> instance per Resource URI...
+ extern "C" uint8_t ipt_helper_nsdl_callback_stub(sn_coap_hdr_s *received_coap_ptr, sn_nsdl_addr_s *address, sn_proto_info_s * proto) {
+    uint8_t status = 1;
+    if (received_coap_ptr != NULL) {       
+        // retrieve our resource instance via lookup/index by our resource URI
+        DynamicResource *instance = __lookup_instance_pointer((const char *)received_coap_ptr->uri_path_ptr,received_coap_ptr->uri_path_len);
+        if (instance != NULL) {
+            std::printf("Instance retrieved.. processing callback...\r\n");
+            status = instance->process(received_coap_ptr,address,proto);
+        }
+        else {
+            std::printf("Unable to process callback: unable to lookup DynamicResource<> instance pointer... ignorning...\r\n");
+        }
+    }
+    else {
+        std::printf("Unable to process callback: received coap pointer is NULL... ignoring...\r\n");
+    }
+    return status;
+ }
+ 
+ // add a instance pointer to our lookup table keyed by the key
+ extern "C" void ipt_helper_add_instance_pointer(const string *key,DynamicResource *instance) {
+     __nsdl_lookup_table.add(*key,instance);
+     if (key != NULL) delete key;
+ }
+ 
+ #endif // __INSTANCE_POINTER_TABLE_HELPER_H__
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