public void PublishFdcMessage(NuFoodItem message)
{
try
{
_foodBusFdc.OnNext(message);
}
catch (Exception e)
{
_foodBusFdc.OnError(e);
}
}
public async Task <FdcAgentHttpStatus> GetFdcFoodItems(IList <int> fdcIds)
{
var semaphoreSlim = new SemaphoreSlim(
initialCount: 10,
maxCount: 10
);
var responses = new ConcurrentBag <NuFoodItem>();
var httpTasks = new List <Task>();
foreach (var id in fdcIds)
{
httpTasks.Add(
Task.Run(async() => {
await semaphoreSlim.WaitAsync();
try
{
_logger.LogInformation($"Requesting item id: {id} - at {DateTime.Now}");
FdcRequestParams requestParams = new FdcRequestParams()
{
fdcIds = new List <int> {
id
},
format = _dataSources.Usda.RequestBody.format,
nutrients = _dataSources.Usda.RequestBody.nutrients
};
var content = new StringContent(
JsonSerializer.Serialize <FdcRequestParams>(requestParams, _options),
Encoding.UTF8,
"application/json"
);
var response = await _client.PostAsync(
_dataSources.Usda.FoodDataCentral.Endpoints.Foods + _dataSources.Usda.FoodDataCentral.Key,
content
);
response.EnsureSuccessStatusCode();
_logger.LogInformation($"Delaying request for throttling");
await Task.Delay(TimeSpan.FromSeconds(3));
using var responseStream = await response.Content.ReadAsStreamAsync();
var item = await JsonSerializer.DeserializeAsync <IList <SRLegacyFoodItem> >(responseStream, _options);
if (item != null)
{
_logger.LogInformation($"********** {item[0].fdcId}");
if (item[0].foodPortions == null)
{
_logger.LogInformation($" ####### {item[0].fdcId} #### - no portions");
}
NuFoodItem nuFoodItem = this.TransformItem(item[0]);
_messageBusFdc.PublishFdcMessage(nuFoodItem);
responses.Add(nuFoodItem);
_logger.LogInformation($"Task end");
}
}
finally
{
semaphoreSlim.Release();
}
})
);
}
await Task.WhenAll(httpTasks);
/*
** Much better work to do here
** TODO: Better return and checking for data errors
*/
_operationStatus = new FdcAgentHttpStatus();
_operationStatus.count = httpTasks.Count;
_operationStatus.message = "OK";
return(_operationStatus);
}
private NuFoodItem TransformItem(SRLegacyFoodItem item)
{
IList <NuFoodNutrient> nutrients = new List <NuFoodNutrient>();
foreach (var nutrient in item.foodNutrients)
{
NuFoodNutrient nu = new NuFoodNutrient {
id = nutrient.nutrient.id,
name = nutrient.nutrient.name,
number = nutrient.nutrient.number,
unitName = nutrient.nutrient.unitName,
amount = nutrient.amount
};
nutrients.Add(nu);
}
IList <NuFoodPortion> portions = new List <NuFoodPortion>();
if (item.foodPortions == null)
{
NuFoodPortion por = new NuFoodPortion {
name = "",
gramWeight = 0,
amount = 0
};
portions.Add(por);
}
if (item.foodPortions != null)
{
foreach (var portion in item.foodPortions)
{
NuFoodPortion por = new NuFoodPortion {
name = portion.modifier,
gramWeight = portion.gramWeight,
amount = portion.amount
};
portions.Add(por);
}
}
NuFoodItem foodItem = new NuFoodItem {
id = item.fdcId.ToString(),
type = "food",
dataType = item.dataType,
category = item.foodCategory.description,
name = item.description,
publicationDate = item.publicationDate,
foodNutrients = nutrients,
foodPortions = portions,
nutrientConversionFactors = new NuNutrientConversionFactors {
proteinConversionFactor = new NuProteinConversionFactor(),
calorieConversionFactor = new NuCalorieConversionFactor()
}
};
foreach (var factor in item.nutrientConversionFactors)
{
if (factor.type == ".ProteinConversionFactor")
{
foodItem.nutrientConversionFactors.proteinConversionFactor.type = factor.type;
foodItem.nutrientConversionFactors.proteinConversionFactor.name = factor.name;
foodItem.nutrientConversionFactors.proteinConversionFactor.value = factor.value;
}
if (factor.type == ".CalorieConversionFactor")
{
foodItem.nutrientConversionFactors.calorieConversionFactor.type = factor.type;
foodItem.nutrientConversionFactors.calorieConversionFactor.name = factor.name;
foodItem.nutrientConversionFactors.calorieConversionFactor.proteinValue = factor.proteinValue;
foodItem.nutrientConversionFactors.calorieConversionFactor.fatValue = factor.fatValue;
foodItem.nutrientConversionFactors.calorieConversionFactor.carbohydrateValue = factor.carbohydrateValue;
}
}
return(foodItem);
}
