public async Task <bool> UpdateDevicePropertiesAsync(string eventData, string tenant)
{
bool updateStatus = false;
DevicePropertyServiceModel existingDevProperties = null;
ValueServiceModel deviceCacheValue = null;
CosmosOperations docClient = null;
try
{
this.cosmosDbcoll = $"{CollectionKey}-{tenant}";
this.cosmosDb = Environment.GetEnvironmentVariable("DevicePropertiesCacheDatabaseId", EnvironmentVariableTarget.Process);
this.whitelist = Environment.GetEnvironmentVariable("WhiteList", EnvironmentVariableTarget.Process);
this.cosmosDbRus = Convert.ToInt32(Environment.GetEnvironmentVariable("CosmosDBRus", EnvironmentVariableTarget.Process));
this.cosmosConnectionString = Environment.GetEnvironmentVariable("CosmosDbConnectionString", EnvironmentVariableTarget.Process);
docClient = await CosmosOperations.GetClientAsync();
updateStatus = await docClient.CreateCollectionIfNotExistsAsync(this.cosmosDb, this.cosmosDbcoll, this.cosmosDbRus, CosmosOperation.DeviceCache);
// CosmosHelper cosmosHelper = new CosmosHelper(cosmosConnectionString, cosmosDbcoll, cosmosDb, tenant, cosmosDbRus, CosmosOperation.devicecache);
try
{
deviceCacheValue = await docClient.GetDocumentAsync(this.GenerateCollectionLink(this.cosmosDb, this.cosmosDbcoll), CollectionId, Key);
existingDevProperties = JsonConvert.DeserializeObject <DevicePropertyServiceModel>(deviceCacheValue.Data);
}
catch (ResourceNotFoundException)
{
// Do nothing
}
catch (Exception exception)
{
throw new ApplicationException("Get Device Properties failed", exception);
}
DeviceTwinNameOperations devTwinOps = new DeviceTwinNameOperations();
DeviceTwinName deviceTwinName = devTwinOps.GetValidNames(this.whitelist, existingDevProperties, eventData);
if (deviceTwinName != null)
{
DevicePropertyServiceModel devicePropertyModel = new DevicePropertyServiceModel
{
Tags = deviceTwinName.Tags,
Reported = deviceTwinName.ReportedProperties,
};
ValueServiceModel valueSvcModel = new ValueServiceModel(new KeyValueDocument(CollectionId, Key, JsonConvert.SerializeObject(devicePropertyModel)));
if (devicePropertyModel != null && existingDevProperties == null)
{
// Create the document
if (deviceCacheValue == null)
{
await docClient.SaveDocumentAsync(CollectionId, Key, valueSvcModel, this.GenerateCollectionLink(this.cosmosDb, this.cosmosDbcoll));
updateStatus = true;
}
}
else
{
// update only if the Tags or the reported properties are different from ones stored in cosmos
if (existingDevProperties != null && (!existingDevProperties.Tags.SetEquals(devicePropertyModel.Tags) || !existingDevProperties.Reported.SetEquals(devicePropertyModel.Reported)))
{
await docClient.SaveDocumentAsync(CollectionId, Key, valueSvcModel, this.GenerateCollectionLink(this.cosmosDb, this.cosmosDbcoll));
updateStatus = true;
}
}
}
else
{
updateStatus = true;
}
}
catch (Exception exception)
{
throw new ApplicationException($"Update Device Properties failed {exception}, tenant: {tenant}");
}
return(updateStatus);
}
public async Task <ValueServiceModel> SaveDocumentAsync(string collectionId, string key, ValueServiceModel input, string collectionLink)
{
try
{
var response = await this.client.UpsertDocumentAsync(
collectionLink,
new KeyValueDocument(collectionId, key, input.Data),
IfMatch(input.ETag));
return(new ValueServiceModel(response));
}
catch (Exception ex)
{
throw new ApplicationException("Update failed while saving the resource", ex);
}
}
