IOTHUB_CLIENT_LL_HANDLE IoTHubClient_LL_CreateFromConnectionString(const char* connectionString, IOTHUB_CLIENT_TRANSPORT_PROVIDER protocol)
{
IOTHUB_CLIENT_LL_HANDLE result = NULL;
/*Codes_SRS_IOTHUBCLIENT_LL_05_001: [IoTHubClient_LL_CreateFromConnectionString shall obtain the version string by a call to IoTHubClient_GetVersionString.]*/
/*Codes_SRS_IOTHUBCLIENT_LL_05_002: [IoTHubClient_LL_CreateFromConnectionString shall print the version string to standard output.]*/
LogInfo("IoT Hub SDK for C, version %s", IoTHubClient_GetVersionString());
/* Codes_SRS_IOTHUBCLIENT_LL_12_003: [IoTHubClient_LL_CreateFromConnectionString shall verify the input parameter and if it is NULL then return NULL] */
if (connectionString == NULL)
{
LogError("Input parameter is NULL: connectionString");
}
else if (protocol == NULL)
{
LogError("Input parameter is NULL: protocol");
}
else
{
/* Codes_SRS_IOTHUBCLIENT_LL_12_004: [IoTHubClient_LL_CreateFromConnectionString shall allocate IOTHUB_CLIENT_CONFIG structure] */
IOTHUB_CLIENT_CONFIG* config = malloc(sizeof(IOTHUB_CLIENT_CONFIG));
if (config == NULL)
{
/* Codes_SRS_IOTHUBCLIENT_LL_12_012: [If the allocation failed IoTHubClient_LL_CreateFromConnectionString returns NULL] */
LogError("Malloc failed");
return NULL;
}
else
{
STRING_TOKENIZER_HANDLE tokenizer1 = NULL;
STRING_HANDLE connString = NULL;
STRING_HANDLE tokenString = NULL;
STRING_HANDLE valueString = NULL;
STRING_HANDLE hostNameString = NULL;
STRING_HANDLE hostSuffixString = NULL;
STRING_HANDLE deviceIdString = NULL;
STRING_HANDLE deviceKeyString = NULL;
STRING_HANDLE deviceSasTokenString = NULL;
STRING_HANDLE protocolGateway = NULL;
config->protocol = protocol;
config->iotHubName = NULL;
config->iotHubSuffix = NULL;
config->deviceId = NULL;
config->deviceKey = NULL;
config->deviceSasToken = NULL;
/* Codes_SRS_IOTHUBCLIENT_LL_04_002: [If it does not, it shall pass the protocolGatewayHostName NULL.] */
config->protocolGatewayHostName = NULL;
if ((connString = STRING_construct(connectionString)) == NULL)
{
LogError("Error constructing connectiong String");
}
else if ((tokenizer1 = STRING_TOKENIZER_create(connString)) == NULL)
{
LogError("Error creating Tokenizer");
}
else if ((tokenString = STRING_new()) == NULL)
{
LogError("Error creating Token String");
}
else if ((valueString = STRING_new()) == NULL)
{
LogError("Error creating Value String");
}
else if ((hostNameString = STRING_new()) == NULL)
{
LogError("Error creating HostName String");
}
else if ((hostSuffixString = STRING_new()) == NULL)
{
LogError("Error creating HostSuffix String");
}
/* Codes_SRS_IOTHUBCLIENT_LL_12_005: [IoTHubClient_LL_CreateFromConnectionString shall try to parse the connectionString input parameter for the following structure: "Key1=value1;key2=value2;key3=value3..."] */
/* Codes_SRS_IOTHUBCLIENT_LL_12_006: [IoTHubClient_LL_CreateFromConnectionString shall verify the existence of the following Key/Value pairs in the connection string: HostName, DeviceId, SharedAccessKey or SharedAccessSignature.] */
else
{
while ((STRING_TOKENIZER_get_next_token(tokenizer1, tokenString, "=") == 0))
{
if (STRING_TOKENIZER_get_next_token(tokenizer1, valueString, ";") != 0)
{
LogError("Tokenizer error");
break;
}
else
{
if (tokenString != NULL)
{
/* Codes_SRS_IOTHUBCLIENT_LL_12_010: [IoTHubClient_LL_CreateFromConnectionString shall fill up the IOTHUB_CLIENT_CONFIG structure using the following mapping: iotHubName = Name, iotHubSuffix = Suffix, deviceId = DeviceId, deviceKey = SharedAccessKey or deviceSasToken = SharedAccessSignature] */
const char* s_token = STRING_c_str(tokenString);
if (strcmp(s_token, HOSTNAME_TOKEN) == 0)
{
/* Codes_SRS_IOTHUBCLIENT_LL_12_009: [IoTHubClient_LL_CreateFromConnectionString shall split the value of HostName to Name and Suffix using the first "." as a separator] */
STRING_TOKENIZER_HANDLE tokenizer2 = NULL;
if ((tokenizer2 = STRING_TOKENIZER_create(valueString)) == NULL)
{
LogError("Error creating Tokenizer");
break;
}
else
{
/* Codes_SRS_IOTHUBCLIENT_LL_12_015: [If the string split failed, IoTHubClient_LL_CreateFromConnectionString returns NULL ] */
if (STRING_TOKENIZER_get_next_token(tokenizer2, hostNameString, ".") != 0)
{
LogError("Tokenizer error");
STRING_TOKENIZER_destroy(tokenizer2);
break;
}
else
{
config->iotHubName = STRING_c_str(hostNameString);
if (STRING_TOKENIZER_get_next_token(tokenizer2, hostSuffixString, ";") != 0)
{
LogError("Tokenizer error");
STRING_TOKENIZER_destroy(tokenizer2);
break;
}
else
{
config->iotHubSuffix = STRING_c_str(hostSuffixString);
}
}
STRING_TOKENIZER_destroy(tokenizer2);
}
}
else if (strcmp(s_token, DEVICEID_TOKEN) == 0)
{
deviceIdString = STRING_clone(valueString);
if (deviceIdString != NULL)
{
config->deviceId = STRING_c_str(deviceIdString);
}
}
else if (strcmp(s_token, DEVICEKEY_TOKEN) == 0)
{
deviceKeyString = STRING_clone(valueString);
if (deviceKeyString != NULL)
{
config->deviceKey = STRING_c_str(deviceKeyString);
}
}
else if (strcmp(s_token, DEVICESAS_TOKEN) == 0)
{
deviceSasTokenString = STRING_clone(valueString);
if (deviceSasTokenString != NULL)
{
config->deviceSasToken = STRING_c_str(deviceSasTokenString);
}
}
/* Codes_SRS_IOTHUBCLIENT_LL_04_001: [IoTHubClient_LL_CreateFromConnectionString shall verify the existence of key/value pair GatewayHostName. If it does exist it shall pass the value to IoTHubClient_LL_Create API.] */
else if (strcmp(s_token, PROTOCOL_GATEWAY_HOST) == 0)
{
protocolGateway = STRING_clone(valueString);
if (protocolGateway != NULL)
{
config->protocolGatewayHostName = STRING_c_str(protocolGateway);
}
}
}
}
}
/* parsing is done - check the result */
if (config->iotHubName == NULL)
{
LogError("iotHubName is not found");
}
else if (config->iotHubSuffix == NULL)
{
LogError("iotHubSuffix is not found");
}
else if (config->deviceId == NULL)
{
LogError("deviceId is not found");
}
else if (config->deviceKey == NULL && config->deviceSasToken == NULL)
{
LogError("deviceKey/deviceSasToken not found");
}
else if (config->deviceKey != NULL && config->deviceSasToken != NULL)
{
LogError("Both device Key & SAS token are defined. Only one should be provided.");
}
else
{
/* Codes_SRS_IOTHUBCLIENT_LL_12_011: [IoTHubClient_LL_CreateFromConnectionString shall call into the IoTHubClient_LL_Create API with the current structure and returns with the return value of it] */
result = IoTHubClient_LL_Create(config);
if (result == NULL)
{
LogError("IoTHubClient_LL_Create failed");
}
else
{
/*return as is*/
}
}
}
if (deviceSasTokenString != NULL)
STRING_delete(deviceSasTokenString);
if (deviceKeyString != NULL)
STRING_delete(deviceKeyString);
if (deviceIdString != NULL)
STRING_delete(deviceIdString);
if (hostSuffixString != NULL)
STRING_delete(hostSuffixString);
if (hostNameString != NULL)
STRING_delete(hostNameString);
if (valueString != NULL)
STRING_delete(valueString);
if (tokenString != NULL)
STRING_delete(tokenString);
if (connString != NULL)
STRING_delete(connString);
if (protocolGateway != NULL)
STRING_delete(protocolGateway);
if (tokenizer1 != NULL)
STRING_TOKENIZER_destroy(tokenizer1);
free(config);
}
}
return result;
}
void remote_monitoring_run(void)
{
initBme();
srand((unsigned int)time(NULL));
if (serializer_init(NULL) != SERIALIZER_OK)
{
LogInfo("Failed on serializer_init\r\n");
}
else
{
IOTHUB_CLIENT_CONFIG config;
IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle;
config.deviceId = deviceId;
config.deviceKey = deviceKey;
config.iotHubName = hubName;
config.iotHubSuffix = hubSuffix;
config.protocol = HTTP_Protocol;
iotHubClientHandle = IoTHubClient_LL_Create(&config);
if (iotHubClientHandle == NULL)
{
LogInfo("Failed on IoTHubClient_CreateFromConnectionString\r\n");
}
else
{
#ifdef MBED_BUILD_TIMESTAMP
// For mbed add the certificate information
if (IoTHubClient_LL_SetOption(iotHubClientHandle, "TrustedCerts", certificates) != IOTHUB_CLIENT_OK)
{
LogInfo("failure to set option \"TrustedCerts\"\r\n");
}
#endif // MBED_BUILD_TIMESTAMP
Thermostat* thermostat = CREATE_MODEL_INSTANCE(Contoso, Thermostat);
if (thermostat == NULL)
{
LogInfo("Failed on CREATE_MODEL_INSTANCE\r\n");
}
else
{
STRING_HANDLE commandsMetadata;
if (IoTHubClient_LL_SetMessageCallback(iotHubClientHandle, IoTHubMessage, thermostat) != IOTHUB_CLIENT_OK)
{
LogInfo("unable to IoTHubClient_SetMessageCallback\r\n");
}
else
{
/* send the device info upon startup so that the cloud app knows
what commands are available and the fact that the device is up */
thermostat->ObjectType = "DeviceInfo";
thermostat->IsSimulatedDevice = false;
thermostat->Version = "1.0";
thermostat->DeviceProperties.HubEnabledState = true;
thermostat->DeviceProperties.DeviceID = (char*)deviceId;
commandsMetadata = STRING_new();
if (commandsMetadata == NULL)
{
LogInfo("Failed on creating string for commands metadata\r\n");
}
else
{
/* Serialize the commands metadata as a JSON string before sending */
if (SchemaSerializer_SerializeCommandMetadata(GET_MODEL_HANDLE(Contoso, Thermostat), commandsMetadata) != SCHEMA_SERIALIZER_OK)
{
LogInfo("Failed serializing commands metadata\r\n");
}
else
{
unsigned char* buffer;
size_t bufferSize;
thermostat->Commands = (char*)STRING_c_str(commandsMetadata);
/* Here is the actual send of the Device Info */
if (SERIALIZE(&buffer, &bufferSize, thermostat->ObjectType, thermostat->Version, thermostat->IsSimulatedDevice, thermostat->DeviceProperties, thermostat->Commands) != IOT_AGENT_OK)
{
LogInfo("Failed serializing\r\n");
}
else
{
sendMessage(iotHubClientHandle, buffer, bufferSize);
}
}
STRING_delete(commandsMetadata);
}
thermostat->DeviceId = (char*)deviceId;
int sendCycle = 10;
int currentCycle = 0;
while (1)
{
if(currentCycle >= sendCycle) {
float Temp;
float Humi;
getNextSample(&Temp, &Humi);
//thermostat->Temperature = 50 + (rand() % 10 + 2);
thermostat->Temperature = (int)round(Temp);
thermostat->ExternalTemperature = 55 + (rand() % 5 + 2);
//thermostat->Humidity = 50 + (rand() % 8 + 2);
thermostat->Humidity = (int)round(Humi);
currentCycle = 0;
unsigned char*buffer;
size_t bufferSize;
LogInfo("Sending sensor value Temperature = %d, Humidity = %d\r\n", thermostat->Temperature, thermostat->Humidity);
if (SERIALIZE(&buffer, &bufferSize, thermostat->DeviceId, thermostat->Temperature, thermostat->Humidity, thermostat->ExternalTemperature) != IOT_AGENT_OK)
{
LogInfo("Failed sending sensor value\r\n");
}
else
{
sendMessage(iotHubClientHandle, buffer, bufferSize);
}
}
IoTHubClient_LL_DoWork(iotHubClientHandle);
ThreadAPI_Sleep(100);
currentCycle++;
}
}
DESTROY_MODEL_INSTANCE(thermostat);
}
IoTHubClient_LL_Destroy(iotHubClientHandle);
}
serializer_deinit();
}
}
