Azure IoT / serializer

A modelling and serializer library for Microsoft Azure IoTHub client applications

Dependents:   sht15_remote_monitoring f767zi_mqtt remote_monitoring simplesample_amqp ... more

This library implements a serializer library to be used in projects involving Microsoft Azure IoT Hub connectivity. The code is replicated from https://github.com/Azure/azure-iot-sdks

commanddecoder.c@13:16e88f0cfa5f, 2016-07-01 (annotated)

Committer:
Azure.IoT Build
Date:
Fri Jul 01 10:43:11 2016 -0700
Revision:
13:16e88f0cfa5f
Parent:
11:b1327861f5e0
Child:
14:0c00e67a4ab1
1.0.10

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AzureIoTClient 0:1f9b2707ec7d 1 // Copyright (c) Microsoft. All rights reserved.
AzureIoTClient 0:1f9b2707ec7d 2 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
AzureIoTClient 0:1f9b2707ec7d 3
AzureIoTClient 0:1f9b2707ec7d 4 #include <stdlib.h>
AzureIoTClient 0:1f9b2707ec7d 5 #ifdef _CRTDBG_MAP_ALLOC
AzureIoTClient 0:1f9b2707ec7d 6 #include <crtdbg.h>
AzureIoTClient 0:1f9b2707ec7d 7 #endif
Azure.IoT Build 10:c2aee3965a83 8 #include "azure_c_shared_utility/gballoc.h"
AzureIoTClient 0:1f9b2707ec7d 9
AzureIoTClient 0:1f9b2707ec7d 10 #include <stddef.h>
AzureIoTClient 0:1f9b2707ec7d 11
AzureIoTClient 0:1f9b2707ec7d 12 #include "commanddecoder.h"
AzureIoTClient 0:1f9b2707ec7d 13 #include "multitree.h"
Azure.IoT Build 10:c2aee3965a83 14 #include "azure_c_shared_utility/crt_abstractions.h"
Azure.IoT Build 13:16e88f0cfa5f 15 #include "azure_c_shared_utility/xlogging.h"
AzureIoTClient 0:1f9b2707ec7d 16 #include "schema.h"
AzureIoTClient 0:1f9b2707ec7d 17 #include "codefirst.h"
AzureIoTClient 0:1f9b2707ec7d 18 #include "jsondecoder.h"
AzureIoTClient 0:1f9b2707ec7d 19
AzureIoTClient 0:1f9b2707ec7d 20 DEFINE_ENUM_STRINGS(COMMANDDECODER_RESULT, COMMANDDECODER_RESULT_VALUES);
AzureIoTClient 0:1f9b2707ec7d 21
AzureIoTClient 0:1f9b2707ec7d 22 typedef struct COMMAND_DECODER_INSTANCE_TAG
AzureIoTClient 0:1f9b2707ec7d 23 {
AzureIoTClient 0:1f9b2707ec7d 24 SCHEMA_MODEL_TYPE_HANDLE ModelHandle;
AzureIoTClient 0:1f9b2707ec7d 25 ACTION_CALLBACK_FUNC ActionCallback;
AzureIoTClient 0:1f9b2707ec7d 26 void* ActionCallbackContext;
AzureIoTClient 0:1f9b2707ec7d 27 } COMMAND_DECODER_INSTANCE;
AzureIoTClient 0:1f9b2707ec7d 28
AzureIoTClient 0:1f9b2707ec7d 29 static int DecodeValueFromNode(SCHEMA_HANDLE schemaHandle, AGENT_DATA_TYPE* agentDataType, MULTITREE_HANDLE node, const char* edmTypeName)
AzureIoTClient 0:1f9b2707ec7d 30 {
AzureIoTClient 0:1f9b2707ec7d 31 /* because "pottentially uninitialized variable on MS compiler" */
AzureIoTClient 0:1f9b2707ec7d 32 int result = 0;
AzureIoTClient 0:1f9b2707ec7d 33 const char* argStringValue;
AzureIoTClient 0:1f9b2707ec7d 34 AGENT_DATA_TYPE_TYPE primitiveType;
AzureIoTClient 0:1f9b2707ec7d 35
AzureIoTClient 0:1f9b2707ec7d 36 /* Codes_SRS_COMMAND_DECODER_99_029:[ If the argument type is complex then a complex type value shall be built from the child nodes.] */
AzureIoTClient 0:1f9b2707ec7d 37 if ((primitiveType = CodeFirst_GetPrimitiveType(edmTypeName)) == EDM_NO_TYPE)
AzureIoTClient 0:1f9b2707ec7d 38 {
AzureIoTClient 0:1f9b2707ec7d 39 SCHEMA_STRUCT_TYPE_HANDLE structTypeHandle;
AzureIoTClient 0:1f9b2707ec7d 40 size_t propertyCount;
AzureIoTClient 0:1f9b2707ec7d 41
AzureIoTClient 0:1f9b2707ec7d 42 /* Codes_SRS_COMMAND_DECODER_99_033:[ In order to determine which are the members of a complex types, Schema APIs for structure types shall be used.] */
AzureIoTClient 0:1f9b2707ec7d 43 if (((structTypeHandle = Schema_GetStructTypeByName(schemaHandle, edmTypeName)) == NULL) ||
AzureIoTClient 0:1f9b2707ec7d 44 (Schema_GetStructTypePropertyCount(structTypeHandle, &propertyCount) != SCHEMA_OK))
AzureIoTClient 0:1f9b2707ec7d 45 {
AzureIoTClient 0:1f9b2707ec7d 46 /* Codes_SRS_COMMAND_DECODER_99_010:[ If any Schema API fails then the command shall not be dispatched and it shall return EXECUTE_COMMAND_ERROR.]*/
AzureIoTClient 0:1f9b2707ec7d 47 result = __LINE__;
AzureIoTClient 11:b1327861f5e0 48 LogError("Getting Struct information failed.");
AzureIoTClient 0:1f9b2707ec7d 49 }
AzureIoTClient 0:1f9b2707ec7d 50 else
AzureIoTClient 0:1f9b2707ec7d 51 {
AzureIoTClient 0:1f9b2707ec7d 52 if (propertyCount == 0)
AzureIoTClient 0:1f9b2707ec7d 53 {
AzureIoTClient 0:1f9b2707ec7d 54 /* Codes_SRS_COMMAND_DECODER_99_034:[ If Schema APIs indicate that a complex type has 0 members then the command shall not be dispatched and it shall return EXECUTE_COMMAND_ERROR.] */
AzureIoTClient 0:1f9b2707ec7d 55 result = __LINE__;
AzureIoTClient 11:b1327861f5e0 56 LogError("Struct type with 0 members is not allowed");
AzureIoTClient 0:1f9b2707ec7d 57 }
AzureIoTClient 0:1f9b2707ec7d 58 else
AzureIoTClient 0:1f9b2707ec7d 59 {
AzureIoTClient 0:1f9b2707ec7d 60 AGENT_DATA_TYPE* memberValues = (AGENT_DATA_TYPE*)malloc(sizeof(AGENT_DATA_TYPE)* propertyCount);
AzureIoTClient 0:1f9b2707ec7d 61 if (memberValues == NULL)
AzureIoTClient 0:1f9b2707ec7d 62 {
AzureIoTClient 0:1f9b2707ec7d 63 /* Codes_SRS_COMMAND_DECODER_99_021:[ If the parsing of the command fails for any other reason the command shall not be dispatched.] */
AzureIoTClient 0:1f9b2707ec7d 64 result = __LINE__;
AzureIoTClient 11:b1327861f5e0 65 LogError("Failed allocating member values for command argument");
AzureIoTClient 0:1f9b2707ec7d 66 }
AzureIoTClient 0:1f9b2707ec7d 67 else
AzureIoTClient 0:1f9b2707ec7d 68 {
AzureIoTClient 0:1f9b2707ec7d 69 const char** memberNames = (const char**)malloc(sizeof(const char*)* propertyCount);
AzureIoTClient 0:1f9b2707ec7d 70 if (memberNames == NULL)
AzureIoTClient 0:1f9b2707ec7d 71 {
AzureIoTClient 0:1f9b2707ec7d 72 /* Codes_SRS_COMMAND_DECODER_99_021:[ If the parsing of the command fails for any other reason the command shall not be dispatched.] */
AzureIoTClient 0:1f9b2707ec7d 73 result = __LINE__;
AzureIoTClient 11:b1327861f5e0 74 LogError("Failed allocating member names for command argument.");
AzureIoTClient 0:1f9b2707ec7d 75 }
AzureIoTClient 0:1f9b2707ec7d 76 else
AzureIoTClient 0:1f9b2707ec7d 77 {
AzureIoTClient 0:1f9b2707ec7d 78 size_t j;
AzureIoTClient 0:1f9b2707ec7d 79 size_t k;
AzureIoTClient 0:1f9b2707ec7d 80
AzureIoTClient 0:1f9b2707ec7d 81 for (j = 0; j < propertyCount; j++)
AzureIoTClient 0:1f9b2707ec7d 82 {
AzureIoTClient 0:1f9b2707ec7d 83 SCHEMA_PROPERTY_HANDLE propertyHandle;
AzureIoTClient 0:1f9b2707ec7d 84 MULTITREE_HANDLE memberNode;
AzureIoTClient 0:1f9b2707ec7d 85 const char* propertyName;
AzureIoTClient 0:1f9b2707ec7d 86 const char* propertyType;
AzureIoTClient 0:1f9b2707ec7d 87
AzureIoTClient 0:1f9b2707ec7d 88 if ((propertyHandle = Schema_GetStructTypePropertyByIndex(structTypeHandle, j)) == NULL)
AzureIoTClient 0:1f9b2707ec7d 89 {
AzureIoTClient 0:1f9b2707ec7d 90 /* Codes_SRS_COMMAND_DECODER_99_010:[ If any Schema API fails then the command shall not be dispatched and it shall return EXECUTE_COMMAND_ERROR.]*/
AzureIoTClient 0:1f9b2707ec7d 91 result = __LINE__;
AzureIoTClient 11:b1327861f5e0 92 LogError("Getting struct member failed.");
AzureIoTClient 0:1f9b2707ec7d 93 break;
AzureIoTClient 0:1f9b2707ec7d 94 }
AzureIoTClient 0:1f9b2707ec7d 95 else if (((propertyName = Schema_GetPropertyName(propertyHandle)) == NULL) ||
AzureIoTClient 0:1f9b2707ec7d 96 ((propertyType = Schema_GetPropertyType(propertyHandle)) == NULL))
AzureIoTClient 0:1f9b2707ec7d 97 {
AzureIoTClient 0:1f9b2707ec7d 98 /* Codes_SRS_COMMAND_DECODER_99_010:[ If any Schema API fails then the command shall not be dispatched and it shall return EXECUTE_COMMAND_ERROR.]*/
AzureIoTClient 0:1f9b2707ec7d 99 result = __LINE__;
AzureIoTClient 11:b1327861f5e0 100 LogError("Getting the struct member information failed.");
AzureIoTClient 0:1f9b2707ec7d 101 break;
AzureIoTClient 0:1f9b2707ec7d 102 }
AzureIoTClient 0:1f9b2707ec7d 103 else
AzureIoTClient 0:1f9b2707ec7d 104 {
AzureIoTClient 0:1f9b2707ec7d 105 memberNames[j] = propertyName;
AzureIoTClient 0:1f9b2707ec7d 106
AzureIoTClient 0:1f9b2707ec7d 107 /* Codes_SRS_COMMAND_DECODER_01_014: [CommandDecoder shall use the MultiTree APIs to extract a specific element from the command JSON.] */
AzureIoTClient 0:1f9b2707ec7d 108 if (MultiTree_GetChildByName(node, memberNames[j], &memberNode) != MULTITREE_OK)
AzureIoTClient 0:1f9b2707ec7d 109 {
AzureIoTClient 0:1f9b2707ec7d 110 /* Codes_SRS_COMMAND_DECODER_99_028:[ If decoding the argument fails then the command shall not be dispatched and it shall return EXECUTE_COMMAND_ERROR.] */
AzureIoTClient 0:1f9b2707ec7d 111 result = __LINE__;
AzureIoTClient 11:b1327861f5e0 112 LogError("Getting child %s failed", propertyName);
AzureIoTClient 0:1f9b2707ec7d 113 break;
AzureIoTClient 0:1f9b2707ec7d 114 }
AzureIoTClient 0:1f9b2707ec7d 115 /* Codes_SRS_COMMAND_DECODER_99_032:[ Nesting shall be supported for complex type.] */
AzureIoTClient 0:1f9b2707ec7d 116 else if ((result = DecodeValueFromNode(schemaHandle, &memberValues[j], memberNode, propertyType)) != 0)
AzureIoTClient 0:1f9b2707ec7d 117 {
AzureIoTClient 0:1f9b2707ec7d 118 break;
AzureIoTClient 0:1f9b2707ec7d 119 }
AzureIoTClient 0:1f9b2707ec7d 120 }
AzureIoTClient 0:1f9b2707ec7d 121 }
AzureIoTClient 0:1f9b2707ec7d 122
AzureIoTClient 0:1f9b2707ec7d 123 if (j == propertyCount)
AzureIoTClient 0:1f9b2707ec7d 124 {
AzureIoTClient 0:1f9b2707ec7d 125 /* Codes_SRS_COMMAND_DECODER_99_031:[ The complex type value that aggregates the children shall be built by using the Create_AGENT_DATA_TYPE_from_Members.] */
AzureIoTClient 0:1f9b2707ec7d 126 if (Create_AGENT_DATA_TYPE_from_Members(agentDataType, edmTypeName, propertyCount, (const char* const*)memberNames, memberValues) != AGENT_DATA_TYPES_OK)
AzureIoTClient 0:1f9b2707ec7d 127 {
AzureIoTClient 0:1f9b2707ec7d 128 /* Codes_SRS_COMMAND_DECODER_99_028:[ If decoding the argument fails then the command shall not be dispatched and it shall return EXECUTE_COMMAND_ERROR.] */
AzureIoTClient 0:1f9b2707ec7d 129 result = __LINE__;
AzureIoTClient 11:b1327861f5e0 130 LogError("Creating the agent data type from members failed.");
AzureIoTClient 0:1f9b2707ec7d 131 }
AzureIoTClient 0:1f9b2707ec7d 132 else
AzureIoTClient 0:1f9b2707ec7d 133 {
AzureIoTClient 0:1f9b2707ec7d 134 result = 0;
AzureIoTClient 0:1f9b2707ec7d 135 }
AzureIoTClient 0:1f9b2707ec7d 136 }
AzureIoTClient 0:1f9b2707ec7d 137
AzureIoTClient 0:1f9b2707ec7d 138 for (k = 0; k < j; k++)
AzureIoTClient 0:1f9b2707ec7d 139 {
AzureIoTClient 0:1f9b2707ec7d 140 Destroy_AGENT_DATA_TYPE(&memberValues[k]);
AzureIoTClient 0:1f9b2707ec7d 141 }
AzureIoTClient 0:1f9b2707ec7d 142
AzureIoTClient 0:1f9b2707ec7d 143 free((void*)memberNames);
AzureIoTClient 0:1f9b2707ec7d 144 }
AzureIoTClient 0:1f9b2707ec7d 145
AzureIoTClient 0:1f9b2707ec7d 146 free(memberValues);
AzureIoTClient 0:1f9b2707ec7d 147 }
AzureIoTClient 0:1f9b2707ec7d 148 }
AzureIoTClient 0:1f9b2707ec7d 149 }
AzureIoTClient 0:1f9b2707ec7d 150 }
AzureIoTClient 0:1f9b2707ec7d 151 else
AzureIoTClient 0:1f9b2707ec7d 152 {
AzureIoTClient 0:1f9b2707ec7d 153 /* Codes_SRS_COMMAND_DECODER_01_014: [CommandDecoder shall use the MultiTree APIs to extract a specific element from the command JSON.] */
AzureIoTClient 0:1f9b2707ec7d 154 if (MultiTree_GetValue(node, (const void **)&argStringValue) != MULTITREE_OK)
AzureIoTClient 0:1f9b2707ec7d 155 {
AzureIoTClient 0:1f9b2707ec7d 156 /* Codes_SRS_COMMAND_DECODER_99_012:[ If any argument is missing in the command text then the command shall not be dispatched and it shall return EXECUTE_COMMAND_ERROR.] */
AzureIoTClient 0:1f9b2707ec7d 157 result = __LINE__;
AzureIoTClient 11:b1327861f5e0 158 LogError("Getting the string from the multitree failed.");
AzureIoTClient 0:1f9b2707ec7d 159 }
AzureIoTClient 0:1f9b2707ec7d 160 /* Codes_SRS_COMMAND_DECODER_99_027:[ The value for an argument of primitive type shall be decoded by using the CreateAgentDataType_From_String API.] */
AzureIoTClient 0:1f9b2707ec7d 161 else if (CreateAgentDataType_From_String(argStringValue, primitiveType, agentDataType) != AGENT_DATA_TYPES_OK)
AzureIoTClient 0:1f9b2707ec7d 162 {
AzureIoTClient 0:1f9b2707ec7d 163 /* Codes_SRS_COMMAND_DECODER_99_028:[ If decoding the argument fails then the command shall not be dispatched and it shall return EXECUTE_COMMAND_ERROR.] */
AzureIoTClient 0:1f9b2707ec7d 164 result = __LINE__;
AzureIoTClient 11:b1327861f5e0 165 LogError("Failed parsing node %s.", argStringValue);
AzureIoTClient 0:1f9b2707ec7d 166 }
AzureIoTClient 0:1f9b2707ec7d 167 }
AzureIoTClient 0:1f9b2707ec7d 168
AzureIoTClient 0:1f9b2707ec7d 169 return result;
AzureIoTClient 0:1f9b2707ec7d 170 }
AzureIoTClient 0:1f9b2707ec7d 171
AzureIoTClient 0:1f9b2707ec7d 172 static EXECUTE_COMMAND_RESULT DecodeAndExecuteModelAction(COMMAND_DECODER_INSTANCE* commandDecoderInstance, SCHEMA_HANDLE schemaHandle, SCHEMA_MODEL_TYPE_HANDLE modelHandle, const char* relativeActionPath, const char* actionName, MULTITREE_HANDLE commandNode)
AzureIoTClient 0:1f9b2707ec7d 173 {
AzureIoTClient 0:1f9b2707ec7d 174 EXECUTE_COMMAND_RESULT result;
AzureIoTClient 0:1f9b2707ec7d 175 char tempStr[128];
AzureIoTClient 0:1f9b2707ec7d 176 size_t strLength = strlen(actionName);
AzureIoTClient 0:1f9b2707ec7d 177
AzureIoTClient 0:1f9b2707ec7d 178 if (strLength <= 1)
AzureIoTClient 0:1f9b2707ec7d 179 {
AzureIoTClient 0:1f9b2707ec7d 180 /* Codes_SRS_COMMAND_DECODER_99_021:[ If the parsing of the command fails for any other reason the command shall not be dispatched.] */
AzureIoTClient 11:b1327861f5e0 181 LogError("Invalid action name");
AzureIoTClient 0:1f9b2707ec7d 182 result = EXECUTE_COMMAND_ERROR;
AzureIoTClient 0:1f9b2707ec7d 183 }
AzureIoTClient 0:1f9b2707ec7d 184 else
AzureIoTClient 0:1f9b2707ec7d 185 {
AzureIoTClient 0:1f9b2707ec7d 186 /* Codes_SRS_COMMAND_DECODER_99_006:[ The action name shall be decoded from the element "Name" of the command JSON.] */
AzureIoTClient 0:1f9b2707ec7d 187 SCHEMA_ACTION_HANDLE modelActionHandle;
AzureIoTClient 0:1f9b2707ec7d 188 size_t argCount;
AzureIoTClient 0:1f9b2707ec7d 189 MULTITREE_HANDLE parametersTreeNode;
AzureIoTClient 0:1f9b2707ec7d 190
AzureIoTClient 0:1f9b2707ec7d 191 #ifdef _MSC_VER
AzureIoTClient 0:1f9b2707ec7d 192 #pragma warning(suppress: 6324) /* We intentionally use here strncpy */
AzureIoTClient 0:1f9b2707ec7d 193 #endif
AzureIoTClient 0:1f9b2707ec7d 194 if (strncpy(tempStr, actionName, strLength - 1) == NULL)
AzureIoTClient 0:1f9b2707ec7d 195 {
AzureIoTClient 0:1f9b2707ec7d 196 /* Codes_SRS_COMMAND_DECODER_99_021:[ If the parsing of the command fails for any other reason the command shall not be dispatched.] */
AzureIoTClient 11:b1327861f5e0 197 LogError("Invalid action name.");
AzureIoTClient 0:1f9b2707ec7d 198 result = EXECUTE_COMMAND_ERROR;
AzureIoTClient 0:1f9b2707ec7d 199 }
AzureIoTClient 0:1f9b2707ec7d 200 /* Codes_SRS_COMMAND_DECODER_01_014: [CommandDecoder shall use the MultiTree APIs to extract a specific element from the command JSON.] */
AzureIoTClient 0:1f9b2707ec7d 201 else if (MultiTree_GetChildByName(commandNode, "Parameters", &parametersTreeNode) != MULTITREE_OK)
AzureIoTClient 0:1f9b2707ec7d 202 {
AzureIoTClient 0:1f9b2707ec7d 203 /* Codes_SRS_COMMAND_DECODER_01_015: [If any MultiTree API call fails then the processing shall stop and the command shall not be dispatched and it shall return EXECUTE_COMMAND_ERROR.] */
AzureIoTClient 11:b1327861f5e0 204 LogError("Error getting Parameters node.");
AzureIoTClient 0:1f9b2707ec7d 205 result = EXECUTE_COMMAND_ERROR;
AzureIoTClient 0:1f9b2707ec7d 206 }
AzureIoTClient 0:1f9b2707ec7d 207 else
AzureIoTClient 0:1f9b2707ec7d 208 {
AzureIoTClient 0:1f9b2707ec7d 209 tempStr[strLength - 1] = 0;
AzureIoTClient 0:1f9b2707ec7d 210
AzureIoTClient 0:1f9b2707ec7d 211 /* Codes_SRS_COMMAND_DECODER_99_009:[ CommandDecoder shall call Schema_GetModelActionByName to obtain the information about a specific action.] */
AzureIoTClient 0:1f9b2707ec7d 212 if (((modelActionHandle = Schema_GetModelActionByName(modelHandle, tempStr)) == NULL) ||
AzureIoTClient 0:1f9b2707ec7d 213 (Schema_GetModelActionArgumentCount(modelActionHandle, &argCount) != SCHEMA_OK))
AzureIoTClient 0:1f9b2707ec7d 214 {
AzureIoTClient 0:1f9b2707ec7d 215 /* Codes_SRS_COMMAND_DECODER_99_010:[ If any Schema API fails then the command shall not be dispatched and it shall return EXECUTE_COMMAND_ERROR.]*/
AzureIoTClient 11:b1327861f5e0 216 LogError("Failed reading action %s from the schema", tempStr);
AzureIoTClient 0:1f9b2707ec7d 217 result = EXECUTE_COMMAND_ERROR;
AzureIoTClient 0:1f9b2707ec7d 218 }
AzureIoTClient 0:1f9b2707ec7d 219 else
AzureIoTClient 0:1f9b2707ec7d 220 {
AzureIoTClient 0:1f9b2707ec7d 221 AGENT_DATA_TYPE* arguments = NULL;
AzureIoTClient 0:1f9b2707ec7d 222
AzureIoTClient 0:1f9b2707ec7d 223 if (argCount > 0)
AzureIoTClient 0:1f9b2707ec7d 224 {
AzureIoTClient 0:1f9b2707ec7d 225 arguments = (AGENT_DATA_TYPE*)malloc(sizeof(AGENT_DATA_TYPE)* argCount);
AzureIoTClient 0:1f9b2707ec7d 226 }
AzureIoTClient 0:1f9b2707ec7d 227
AzureIoTClient 0:1f9b2707ec7d 228 if ((argCount > 0) &&
AzureIoTClient 0:1f9b2707ec7d 229 (arguments == NULL))
AzureIoTClient 0:1f9b2707ec7d 230 {
AzureIoTClient 0:1f9b2707ec7d 231 /* Codes_SRS_COMMAND_DECODER_99_021:[ If the parsing of the command fails for any other reason the command shall not be dispatched.] */
AzureIoTClient 11:b1327861f5e0 232 LogError("Failed allocating arguments array");
AzureIoTClient 0:1f9b2707ec7d 233 result = EXECUTE_COMMAND_ERROR;
AzureIoTClient 0:1f9b2707ec7d 234 }
AzureIoTClient 0:1f9b2707ec7d 235 else
AzureIoTClient 0:1f9b2707ec7d 236 {
AzureIoTClient 0:1f9b2707ec7d 237 size_t i;
AzureIoTClient 0:1f9b2707ec7d 238 size_t j;
AzureIoTClient 0:1f9b2707ec7d 239
AzureIoTClient 0:1f9b2707ec7d 240 /* Codes_SRS_COMMAND_DECODER_99_011:[ CommandDecoder shall attempt to extract from the command text the value for each action argument.] */
AzureIoTClient 0:1f9b2707ec7d 241 for (i = 0; i < argCount; i++)
AzureIoTClient 0:1f9b2707ec7d 242 {
AzureIoTClient 0:1f9b2707ec7d 243 SCHEMA_ACTION_ARGUMENT_HANDLE actionArgumentHandle;
AzureIoTClient 0:1f9b2707ec7d 244 MULTITREE_HANDLE argumentNode;
AzureIoTClient 0:1f9b2707ec7d 245 const char* argName;
AzureIoTClient 0:1f9b2707ec7d 246 const char* argType;
AzureIoTClient 0:1f9b2707ec7d 247
AzureIoTClient 0:1f9b2707ec7d 248 if (((actionArgumentHandle = Schema_GetModelActionArgumentByIndex(modelActionHandle, i)) == NULL) ||
AzureIoTClient 0:1f9b2707ec7d 249 ((argName = Schema_GetActionArgumentName(actionArgumentHandle)) == NULL) ||
AzureIoTClient 0:1f9b2707ec7d 250 ((argType = Schema_GetActionArgumentType(actionArgumentHandle)) == NULL))
AzureIoTClient 0:1f9b2707ec7d 251 {
AzureIoTClient 11:b1327861f5e0 252 LogError("Failed getting the argument information from the schema");
AzureIoTClient 0:1f9b2707ec7d 253 result = EXECUTE_COMMAND_ERROR;
AzureIoTClient 0:1f9b2707ec7d 254 break;
AzureIoTClient 0:1f9b2707ec7d 255 }
AzureIoTClient 0:1f9b2707ec7d 256 /* Codes_SRS_COMMAND_DECODER_01_014: [CommandDecoder shall use the MultiTree APIs to extract a specific element from the command JSON.] */
AzureIoTClient 0:1f9b2707ec7d 257 /* Codes_SRS_COMMAND_DECODER_01_008: [Each argument shall be looked up as a field, member of the "Parameters" node.] */
AzureIoTClient 0:1f9b2707ec7d 258 else if (MultiTree_GetChildByName(parametersTreeNode, argName, &argumentNode) != MULTITREE_OK)
AzureIoTClient 0:1f9b2707ec7d 259 {
AzureIoTClient 0:1f9b2707ec7d 260 /* Codes_SRS_COMMAND_DECODER_99_012:[ If any argument is missing in the command text then the command shall not be dispatched and it shall return EXECUTE_COMMAND_ERROR.] */
AzureIoTClient 11:b1327861f5e0 261 LogError("Missing argument %s", argName);
AzureIoTClient 0:1f9b2707ec7d 262 result = EXECUTE_COMMAND_ERROR;
AzureIoTClient 0:1f9b2707ec7d 263 break;
AzureIoTClient 0:1f9b2707ec7d 264 }
AzureIoTClient 0:1f9b2707ec7d 265 else if (DecodeValueFromNode(schemaHandle, &arguments[i], argumentNode, argType) != 0)
AzureIoTClient 0:1f9b2707ec7d 266 {
AzureIoTClient 0:1f9b2707ec7d 267 result = EXECUTE_COMMAND_ERROR;
AzureIoTClient 0:1f9b2707ec7d 268 break;
AzureIoTClient 0:1f9b2707ec7d 269 }
AzureIoTClient 0:1f9b2707ec7d 270 }
AzureIoTClient 0:1f9b2707ec7d 271
AzureIoTClient 0:1f9b2707ec7d 272 if (i == argCount)
AzureIoTClient 0:1f9b2707ec7d 273 {
AzureIoTClient 0:1f9b2707ec7d 274 /* Codes_SRS_COMMAND_DECODER_99_005:[ If an Invoke Action is decoded successfully then the callback actionCallback shall be called, passing to it the callback action context, decoded name and arguments.] */
AzureIoTClient 0:1f9b2707ec7d 275 result = commandDecoderInstance->ActionCallback(commandDecoderInstance->ActionCallbackContext, relativeActionPath, tempStr, argCount, arguments);
AzureIoTClient 0:1f9b2707ec7d 276 }
AzureIoTClient 0:1f9b2707ec7d 277
AzureIoTClient 0:1f9b2707ec7d 278 for (j = 0; j < i; j++)
AzureIoTClient 0:1f9b2707ec7d 279 {
AzureIoTClient 0:1f9b2707ec7d 280 Destroy_AGENT_DATA_TYPE(&arguments[j]);
AzureIoTClient 0:1f9b2707ec7d 281 }
AzureIoTClient 0:1f9b2707ec7d 282
AzureIoTClient 0:1f9b2707ec7d 283 if (arguments != NULL)
AzureIoTClient 0:1f9b2707ec7d 284 {
AzureIoTClient 0:1f9b2707ec7d 285 free(arguments);
AzureIoTClient 0:1f9b2707ec7d 286 }
AzureIoTClient 0:1f9b2707ec7d 287 }
AzureIoTClient 0:1f9b2707ec7d 288 }
AzureIoTClient 0:1f9b2707ec7d 289 }
AzureIoTClient 0:1f9b2707ec7d 290 }
AzureIoTClient 0:1f9b2707ec7d 291 return result;
AzureIoTClient 0:1f9b2707ec7d 292 }
AzureIoTClient 0:1f9b2707ec7d 293
AzureIoTClient 0:1f9b2707ec7d 294 static EXECUTE_COMMAND_RESULT ScanActionPathAndExecuteAction(COMMAND_DECODER_INSTANCE* commandDecoderInstance, SCHEMA_HANDLE schemaHandle, const char* actionPath, MULTITREE_HANDLE commandNode)
AzureIoTClient 0:1f9b2707ec7d 295 {
AzureIoTClient 0:1f9b2707ec7d 296 EXECUTE_COMMAND_RESULT result;
AzureIoTClient 0:1f9b2707ec7d 297 char* relativeActionPath;
AzureIoTClient 0:1f9b2707ec7d 298 const char* actionName = actionPath;
AzureIoTClient 0:1f9b2707ec7d 299 SCHEMA_MODEL_TYPE_HANDLE modelHandle = commandDecoderInstance->ModelHandle;
AzureIoTClient 0:1f9b2707ec7d 300
AzureIoTClient 0:1f9b2707ec7d 301 /* Codes_SRS_COMMAND_DECODER_99_035:[ CommandDecoder_ExecuteCommand shall support paths to actions that are in child models (i.e. ChildModel/SomeAction.] */
AzureIoTClient 0:1f9b2707ec7d 302 do
AzureIoTClient 0:1f9b2707ec7d 303 {
AzureIoTClient 0:1f9b2707ec7d 304 /* find the slash */
AzureIoTClient 0:1f9b2707ec7d 305 const char* slashPos = strchr(actionName, '/');
AzureIoTClient 0:1f9b2707ec7d 306 if (slashPos == NULL)
AzureIoTClient 0:1f9b2707ec7d 307 {
AzureIoTClient 0:1f9b2707ec7d 308 size_t relativeActionPathLength;
AzureIoTClient 0:1f9b2707ec7d 309
AzureIoTClient 0:1f9b2707ec7d 310 /* Codes_SRS_COMMAND_DECODER_99_037:[ The relative path passed to the actionCallback shall be in the format "childModel1/childModel2/.../childModelN".] */
AzureIoTClient 0:1f9b2707ec7d 311 if (actionName == actionPath)
AzureIoTClient 0:1f9b2707ec7d 312 {
AzureIoTClient 0:1f9b2707ec7d 313 relativeActionPathLength = 0;
AzureIoTClient 0:1f9b2707ec7d 314 }
AzureIoTClient 0:1f9b2707ec7d 315 else
AzureIoTClient 0:1f9b2707ec7d 316 {
AzureIoTClient 0:1f9b2707ec7d 317 relativeActionPathLength = actionName - actionPath - 1;
AzureIoTClient 0:1f9b2707ec7d 318 }
AzureIoTClient 0:1f9b2707ec7d 319
AzureIoTClient 0:1f9b2707ec7d 320 relativeActionPath = (char*)malloc(relativeActionPathLength + 1);
AzureIoTClient 0:1f9b2707ec7d 321 if (relativeActionPath == NULL)
AzureIoTClient 0:1f9b2707ec7d 322 {
AzureIoTClient 0:1f9b2707ec7d 323 /* Codes_SRS_COMMAND_DECODER_99_021:[ If the parsing of the command fails for any other reason the command shall not be dispatched.] */
AzureIoTClient 11:b1327861f5e0 324 LogError("Failed allocating relative action path");
AzureIoTClient 0:1f9b2707ec7d 325 result = EXECUTE_COMMAND_ERROR;
AzureIoTClient 0:1f9b2707ec7d 326 }
AzureIoTClient 0:1f9b2707ec7d 327 else
AzureIoTClient 0:1f9b2707ec7d 328 {
AzureIoTClient 0:1f9b2707ec7d 329 strncpy(relativeActionPath, actionPath, relativeActionPathLength);
AzureIoTClient 0:1f9b2707ec7d 330 relativeActionPath[relativeActionPathLength] = 0;
AzureIoTClient 0:1f9b2707ec7d 331
AzureIoTClient 0:1f9b2707ec7d 332 /* no slash found, this must be an action */
AzureIoTClient 0:1f9b2707ec7d 333 result = DecodeAndExecuteModelAction(commandDecoderInstance, schemaHandle, modelHandle, relativeActionPath, actionName, commandNode);
AzureIoTClient 0:1f9b2707ec7d 334
AzureIoTClient 0:1f9b2707ec7d 335 free(relativeActionPath);
AzureIoTClient 0:1f9b2707ec7d 336 actionName = NULL;
AzureIoTClient 0:1f9b2707ec7d 337 }
AzureIoTClient 0:1f9b2707ec7d 338 break;
AzureIoTClient 0:1f9b2707ec7d 339 }
AzureIoTClient 0:1f9b2707ec7d 340 else
AzureIoTClient 0:1f9b2707ec7d 341 {
AzureIoTClient 0:1f9b2707ec7d 342 /* found a slash, get the child model name */
AzureIoTClient 0:1f9b2707ec7d 343 size_t modelLength = slashPos - actionName;
AzureIoTClient 0:1f9b2707ec7d 344 char* childModelName = (char*)malloc(modelLength + 1);
AzureIoTClient 0:1f9b2707ec7d 345 if (childModelName == NULL)
AzureIoTClient 0:1f9b2707ec7d 346 {
AzureIoTClient 0:1f9b2707ec7d 347 /* Codes_SRS_COMMAND_DECODER_99_021:[ If the parsing of the command fails for any other reason the command shall not be dispatched.] */
AzureIoTClient 11:b1327861f5e0 348 LogError("Failed allocating child model name");
AzureIoTClient 0:1f9b2707ec7d 349 result = EXECUTE_COMMAND_ERROR;
AzureIoTClient 0:1f9b2707ec7d 350 break;
AzureIoTClient 0:1f9b2707ec7d 351 }
AzureIoTClient 0:1f9b2707ec7d 352 else
AzureIoTClient 0:1f9b2707ec7d 353 {
AzureIoTClient 0:1f9b2707ec7d 354 strncpy(childModelName, actionName, modelLength);
AzureIoTClient 0:1f9b2707ec7d 355 childModelName[modelLength] = 0;
AzureIoTClient 0:1f9b2707ec7d 356
AzureIoTClient 0:1f9b2707ec7d 357 /* find the model */
AzureIoTClient 0:1f9b2707ec7d 358 modelHandle = Schema_GetModelModelByName(modelHandle, childModelName);
AzureIoTClient 0:1f9b2707ec7d 359 if (modelHandle == NULL)
AzureIoTClient 0:1f9b2707ec7d 360 {
AzureIoTClient 0:1f9b2707ec7d 361 /* Codes_SRS_COMMAND_DECODER_99_036:[ If a child model cannot be found by using Schema APIs then the command shall not be dispatched and it shall return EXECUTE_COMMAND_ERROR.] */
AzureIoTClient 11:b1327861f5e0 362 LogError("Getting the model %s failed", childModelName);
AzureIoTClient 0:1f9b2707ec7d 363 free(childModelName);
AzureIoTClient 0:1f9b2707ec7d 364 result = EXECUTE_COMMAND_ERROR;
AzureIoTClient 0:1f9b2707ec7d 365 break;
AzureIoTClient 0:1f9b2707ec7d 366 }
AzureIoTClient 0:1f9b2707ec7d 367 else
AzureIoTClient 0:1f9b2707ec7d 368 {
AzureIoTClient 0:1f9b2707ec7d 369 free(childModelName);
AzureIoTClient 0:1f9b2707ec7d 370 actionName = slashPos + 1;
AzureIoTClient 0:1f9b2707ec7d 371 result = EXECUTE_COMMAND_ERROR; /*this only exists to quench a compiler warning about returning an uninitialized variable, which is not possible by design*/
AzureIoTClient 0:1f9b2707ec7d 372 }
AzureIoTClient 0:1f9b2707ec7d 373 }
AzureIoTClient 0:1f9b2707ec7d 374 }
AzureIoTClient 0:1f9b2707ec7d 375 } while (actionName != NULL);
AzureIoTClient 0:1f9b2707ec7d 376 return result;
AzureIoTClient 0:1f9b2707ec7d 377 }
AzureIoTClient 0:1f9b2707ec7d 378
AzureIoTClient 0:1f9b2707ec7d 379 static EXECUTE_COMMAND_RESULT DecodeCommand(COMMAND_DECODER_INSTANCE* commandDecoderInstance, MULTITREE_HANDLE commandNode)
AzureIoTClient 0:1f9b2707ec7d 380 {
AzureIoTClient 0:1f9b2707ec7d 381 EXECUTE_COMMAND_RESULT result;
AzureIoTClient 0:1f9b2707ec7d 382 SCHEMA_HANDLE schemaHandle;
AzureIoTClient 0:1f9b2707ec7d 383
AzureIoTClient 0:1f9b2707ec7d 384 /* Codes_SRS_COMMAND_DECODER_99_022:[ CommandDecoder shall use the Schema APIs to obtain the information about the entity set name and namespace] */
AzureIoTClient 0:1f9b2707ec7d 385 if ((schemaHandle = Schema_GetSchemaForModelType(commandDecoderInstance->ModelHandle)) == NULL)
AzureIoTClient 0:1f9b2707ec7d 386 {
AzureIoTClient 0:1f9b2707ec7d 387 /* Codes_SRS_COMMAND_DECODER_99_010:[ If any Schema API fails then the command shall not be dispatched and it shall return EXECUTE_COMMAND_ERROR.]*/
AzureIoTClient 11:b1327861f5e0 388 LogError("Getting schema information failed");
AzureIoTClient 0:1f9b2707ec7d 389 result = EXECUTE_COMMAND_ERROR;
AzureIoTClient 0:1f9b2707ec7d 390 }
AzureIoTClient 0:1f9b2707ec7d 391 else
AzureIoTClient 0:1f9b2707ec7d 392 {
AzureIoTClient 0:1f9b2707ec7d 393 const char* actionName;
AzureIoTClient 0:1f9b2707ec7d 394 MULTITREE_HANDLE nameTreeNode;
AzureIoTClient 0:1f9b2707ec7d 395
AzureIoTClient 0:1f9b2707ec7d 396 /* Codes_SRS_COMMAND_DECODER_01_014: [CommandDecoder shall use the MultiTree APIs to extract a specific element from the command JSON.] */
AzureIoTClient 0:1f9b2707ec7d 397 /* Codes_SRS_COMMAND_DECODER_99_006:[ The action name shall be decoded from the element "name" of the command JSON.] */
AzureIoTClient 0:1f9b2707ec7d 398 if ((MultiTree_GetChildByName(commandNode, "Name", &nameTreeNode) != MULTITREE_OK) ||
AzureIoTClient 0:1f9b2707ec7d 399 (MultiTree_GetValue(nameTreeNode, (const void **)&actionName) != MULTITREE_OK))
AzureIoTClient 0:1f9b2707ec7d 400 {
AzureIoTClient 0:1f9b2707ec7d 401 /* Codes_SRS_COMMAND_DECODER_01_015: [If any MultiTree API call fails then the processing shall stop and the command shall not be dispatched and it shall return EXECUTE_COMMAND_ERROR.] */
AzureIoTClient 11:b1327861f5e0 402 LogError("Getting action name failed.");
AzureIoTClient 0:1f9b2707ec7d 403 result = EXECUTE_COMMAND_ERROR;
AzureIoTClient 0:1f9b2707ec7d 404 }
AzureIoTClient 0:1f9b2707ec7d 405 else if (strlen(actionName) < 2)
AzureIoTClient 0:1f9b2707ec7d 406 {
AzureIoTClient 0:1f9b2707ec7d 407 /* Codes_SRS_COMMAND_DECODER_99_021:[ If the parsing of the command fails for any other reason the command shall not be dispatched.] */
AzureIoTClient 11:b1327861f5e0 408 LogError("Invalid action name.");
AzureIoTClient 0:1f9b2707ec7d 409 result = EXECUTE_COMMAND_ERROR;
AzureIoTClient 0:1f9b2707ec7d 410 }
AzureIoTClient 0:1f9b2707ec7d 411 else
AzureIoTClient 0:1f9b2707ec7d 412 {
AzureIoTClient 0:1f9b2707ec7d 413 actionName++;
AzureIoTClient 0:1f9b2707ec7d 414 result = ScanActionPathAndExecuteAction(commandDecoderInstance, schemaHandle, actionName, commandNode);
AzureIoTClient 0:1f9b2707ec7d 415 }
AzureIoTClient 0:1f9b2707ec7d 416 }
AzureIoTClient 0:1f9b2707ec7d 417 return result;
AzureIoTClient 0:1f9b2707ec7d 418 }
AzureIoTClient 0:1f9b2707ec7d 419
AzureIoTClient 0:1f9b2707ec7d 420 /*Codes_SRS_COMMAND_DECODER_01_009: [Whenever CommandDecoder_ExecuteCommand is the command shall be decoded and further dispatched to the actionCallback passed in CommandDecoder_Create.]*/
AzureIoTClient 0:1f9b2707ec7d 421 EXECUTE_COMMAND_RESULT CommandDecoder_ExecuteCommand(COMMAND_DECODER_HANDLE handle, const char* command)
AzureIoTClient 0:1f9b2707ec7d 422 {
AzureIoTClient 0:1f9b2707ec7d 423 EXECUTE_COMMAND_RESULT result;
AzureIoTClient 0:1f9b2707ec7d 424 COMMAND_DECODER_INSTANCE* commandDecoderInstance = (COMMAND_DECODER_INSTANCE*)handle;
AzureIoTClient 0:1f9b2707ec7d 425 /*Codes_SRS_COMMAND_DECODER_01_010: [If either the buffer or the receiveCallbackContext argument is NULL, the processing shall stop and the command shall not be dispatched and it shall return EXECUTE_COMMAND_ERROR.]*/
AzureIoTClient 0:1f9b2707ec7d 426 if (
AzureIoTClient 0:1f9b2707ec7d 427 (command == NULL) ||
AzureIoTClient 0:1f9b2707ec7d 428 (commandDecoderInstance == NULL)
AzureIoTClient 0:1f9b2707ec7d 429 )
AzureIoTClient 0:1f9b2707ec7d 430 {
AzureIoTClient 11:b1327861f5e0 431 LogError("Invalid argument, COMMAND_DECODER_HANDLE handle=%p, const char* command=%p", handle, command);
AzureIoTClient 0:1f9b2707ec7d 432 result = EXECUTE_COMMAND_ERROR;
AzureIoTClient 0:1f9b2707ec7d 433 }
AzureIoTClient 0:1f9b2707ec7d 434 else
AzureIoTClient 0:1f9b2707ec7d 435 {
AzureIoTClient 0:1f9b2707ec7d 436 size_t size = strlen(command);
AzureIoTClient 0:1f9b2707ec7d 437 char* commandJSON;
AzureIoTClient 0:1f9b2707ec7d 438
AzureIoTClient 0:1f9b2707ec7d 439 /* Codes_SRS_COMMAND_DECODER_01_011: [If the size of the command is 0 then the processing shall stop and the command shall not be dispatched and it shall return EXECUTE_COMMAND_ERROR.]*/
AzureIoTClient 0:1f9b2707ec7d 440 if (
AzureIoTClient 0:1f9b2707ec7d 441 (size == 0)
AzureIoTClient 0:1f9b2707ec7d 442 )
AzureIoTClient 0:1f9b2707ec7d 443 {
AzureIoTClient 11:b1327861f5e0 444 LogError("Failed because command size is zero");
AzureIoTClient 0:1f9b2707ec7d 445 result = EXECUTE_COMMAND_ERROR;
AzureIoTClient 0:1f9b2707ec7d 446 }
AzureIoTClient 0:1f9b2707ec7d 447 /*Codes_SRS_COMMAND_DECODER_01_013: [If parsing the JSON to a multi tree fails, the processing shall stop and the command shall not be dispatched and it shall return EXECUTE_COMMAND_ERROR.]*/
AzureIoTClient 0:1f9b2707ec7d 448 else if ((commandJSON = (char*)malloc(size + 1)) == NULL)
AzureIoTClient 0:1f9b2707ec7d 449 {
AzureIoTClient 11:b1327861f5e0 450 LogError("Failed to allocate temporary storage for the commands JSON");
AzureIoTClient 0:1f9b2707ec7d 451 result = EXECUTE_COMMAND_ERROR;
AzureIoTClient 0:1f9b2707ec7d 452 }
AzureIoTClient 0:1f9b2707ec7d 453 else
AzureIoTClient 0:1f9b2707ec7d 454 {
AzureIoTClient 0:1f9b2707ec7d 455 MULTITREE_HANDLE commandsTree;
AzureIoTClient 0:1f9b2707ec7d 456
AzureIoTClient 0:1f9b2707ec7d 457 (void)memcpy(commandJSON, command, size);
AzureIoTClient 0:1f9b2707ec7d 458 commandJSON[size] = '\0';
AzureIoTClient 0:1f9b2707ec7d 459
AzureIoTClient 0:1f9b2707ec7d 460 /* Codes_SRS_COMMAND_DECODER_01_012: [CommandDecoder shall decode the command JSON contained in buffer to a multi-tree by using JSONDecoder_JSON_To_MultiTree.] */
AzureIoTClient 0:1f9b2707ec7d 461 if (JSONDecoder_JSON_To_MultiTree(commandJSON, &commandsTree) != JSON_DECODER_OK)
AzureIoTClient 0:1f9b2707ec7d 462 {
AzureIoTClient 0:1f9b2707ec7d 463 /* Codes_SRS_COMMAND_DECODER_01_013: [If parsing the JSON to a multi tree fails, the processing shall stop and the command shall not be dispatched and it shall return EXECUTE_COMMAND_ERROR.] */
AzureIoTClient 11:b1327861f5e0 464 LogError("Decoding JSON to a multi tree failed");
AzureIoTClient 0:1f9b2707ec7d 465 result = EXECUTE_COMMAND_ERROR;
AzureIoTClient 0:1f9b2707ec7d 466 }
AzureIoTClient 0:1f9b2707ec7d 467 else
AzureIoTClient 0:1f9b2707ec7d 468 {
AzureIoTClient 0:1f9b2707ec7d 469 result = DecodeCommand(commandDecoderInstance, commandsTree);
AzureIoTClient 0:1f9b2707ec7d 470
AzureIoTClient 0:1f9b2707ec7d 471 /* Codes_SRS_COMMAND_DECODER_01_016: [CommandDecoder shall ensure that the multi-tree resulting from JSONDecoder_JSON_To_MultiTree is freed after the commands are executed.] */
AzureIoTClient 0:1f9b2707ec7d 472 MultiTree_Destroy(commandsTree);
AzureIoTClient 0:1f9b2707ec7d 473 }
AzureIoTClient 0:1f9b2707ec7d 474
AzureIoTClient 0:1f9b2707ec7d 475 free(commandJSON);
AzureIoTClient 0:1f9b2707ec7d 476 }
AzureIoTClient 0:1f9b2707ec7d 477 }
AzureIoTClient 0:1f9b2707ec7d 478 return result;
AzureIoTClient 0:1f9b2707ec7d 479 }
AzureIoTClient 0:1f9b2707ec7d 480
AzureIoTClient 0:1f9b2707ec7d 481 COMMAND_DECODER_HANDLE CommandDecoder_Create(SCHEMA_MODEL_TYPE_HANDLE modelHandle, ACTION_CALLBACK_FUNC actionCallback, void* actionCallbackContext)
AzureIoTClient 0:1f9b2707ec7d 482 {
AzureIoTClient 0:1f9b2707ec7d 483 COMMAND_DECODER_INSTANCE* result;
AzureIoTClient 0:1f9b2707ec7d 484 /* Codes_SRS_COMMAND_DECODER_99_019:[ For all exposed APIs argument validity checks shall precede other checks.] */
AzureIoTClient 0:1f9b2707ec7d 485 /* Codes_SRS_COMMAND_DECODER_01_003: [If any of the arguments modelHandle is NULL, CommandDecoder_Create shall return NULL.]*/
AzureIoTClient 0:1f9b2707ec7d 486 if (
AzureIoTClient 0:1f9b2707ec7d 487 (modelHandle == NULL)
AzureIoTClient 0:1f9b2707ec7d 488 )
AzureIoTClient 0:1f9b2707ec7d 489 {
AzureIoTClient 0:1f9b2707ec7d 490 LogError("Invalid arguments modelHandle=%p, actionCallback=%p, actionCallbackContext=%p",
AzureIoTClient 0:1f9b2707ec7d 491 modelHandle, actionCallback, actionCallbackContext);
AzureIoTClient 0:1f9b2707ec7d 492 result = NULL;
AzureIoTClient 0:1f9b2707ec7d 493 }
AzureIoTClient 0:1f9b2707ec7d 494 else
AzureIoTClient 0:1f9b2707ec7d 495 {
AzureIoTClient 0:1f9b2707ec7d 496 /* Codes_SRS_COMMAND_DECODER_01_001: [CommandDecoder_Create shall create a new instance of a CommandDecoder.] */
AzureIoTClient 0:1f9b2707ec7d 497 result = malloc(sizeof(COMMAND_DECODER_INSTANCE));
AzureIoTClient 0:1f9b2707ec7d 498 if (result == NULL)
AzureIoTClient 0:1f9b2707ec7d 499 {
AzureIoTClient 0:1f9b2707ec7d 500 /* Codes_SRS_COMMAND_DECODER_01_004: [If any error is encountered during CommandDecoder_Create CommandDecoder_Create shall return NULL.] */
AzureIoTClient 0:1f9b2707ec7d 501 result = NULL;
AzureIoTClient 0:1f9b2707ec7d 502 }
AzureIoTClient 0:1f9b2707ec7d 503 else
AzureIoTClient 0:1f9b2707ec7d 504 {
AzureIoTClient 0:1f9b2707ec7d 505 result->ModelHandle = modelHandle;
AzureIoTClient 0:1f9b2707ec7d 506 result->ActionCallback = actionCallback;
AzureIoTClient 0:1f9b2707ec7d 507 result->ActionCallbackContext = actionCallbackContext;
AzureIoTClient 0:1f9b2707ec7d 508 }
AzureIoTClient 0:1f9b2707ec7d 509 }
AzureIoTClient 0:1f9b2707ec7d 510
AzureIoTClient 0:1f9b2707ec7d 511 return result;
AzureIoTClient 0:1f9b2707ec7d 512 }
AzureIoTClient 0:1f9b2707ec7d 513
AzureIoTClient 0:1f9b2707ec7d 514 void CommandDecoder_Destroy(COMMAND_DECODER_HANDLE commandDecoderHandle)
AzureIoTClient 0:1f9b2707ec7d 515 {
AzureIoTClient 0:1f9b2707ec7d 516 /* Codes_SRS_COMMAND_DECODER_01_007: [If CommandDecoder_Destroy is called with a NULL handle, CommandDecoder_Destroy shall do nothing.] */
AzureIoTClient 0:1f9b2707ec7d 517 if (commandDecoderHandle != NULL)
AzureIoTClient 0:1f9b2707ec7d 518 {
AzureIoTClient 0:1f9b2707ec7d 519 COMMAND_DECODER_INSTANCE* commandDecoderInstance = (COMMAND_DECODER_INSTANCE*)commandDecoderHandle;
AzureIoTClient 0:1f9b2707ec7d 520
AzureIoTClient 0:1f9b2707ec7d 521 /* Codes_SRS_COMMAND_DECODER_01_005: [CommandDecoder_Destroy shall free all resources associated with the commandDecoderHandle instance.] */
AzureIoTClient 0:1f9b2707ec7d 522 free(commandDecoderInstance);
AzureIoTClient 0:1f9b2707ec7d 523 }
AzureIoTClient 0:1f9b2707ec7d 524 }