private async Task <DataTrends> RetrieveDataTrendsFromCache(string babyId)
{
DataTrends latestTrends = null;
var cache = await dataTrendsCache.Value;
cache.TryGetValue(babyId, out latestTrends);
return(latestTrends);
}
private async Task SaveDataTrendsToCache(DataTrends latestTrends, string babyId)
{
var cache = await dataTrendsCache.Value;
cache[babyId] = latestTrends;
var cacheFile = await dataTrendsCacheFile.Value;
await dataTrendsSemaphore.WaitAsync();
try
{
await cacheFile.WriteJsonToFile(typeof(Dictionary <string, DataTrends>),
cache);
}
finally
{
dataTrendsSemaphore.Release();
}
}
public IAsyncAction SaveDataTrends(DataTrends latestTrends, string babyId)
{
return(SaveDataTrendsToCache(latestTrends, babyId).AsAsyncAction());
}