private string GetDescription(ImageEntity entity)
{
var data = JObject.Parse(entity.ImageAnalyzerResults);
var desc = data["description"]?["captions"]?[0]?["text"];
return(desc.Value <string>());
}
public CognativeService(ImageEntity imageEntity, BlobManager blobManager, TableManager tableManager, string subscriptionKey)
{
_imageEntity = imageEntity;
BlobManager = blobManager;
TableManager = tableManager;
SubscriptionKey = subscriptionKey;
}
public async Task UpdateRecord(ImageEntity imageEntity)
{
// initialize
await Initialzie();
// TODO should check the response and handle appropriately
await CloudTable.ExecuteAsync(TableOperation.Merge(imageEntity));
}
public async Task <ImageEntity> AddOriginalImage(string url)
{
// initialize
await Initialzie();
// compose the record and add it
var record = new ImageEntity {
OriginalImageUrl = url
};
// todo add some handling for invalid results
await CloudTable.ExecuteAsync(TableOperation.Insert(record));
// return the row key
return(record);
}
public async Task UpdateRecord(string id, Action <ImageEntity> mergeRecordCallback)
{
await Initialzie();
var result = await CloudTable.ExecuteAsync(TableOperation.Retrieve <ImageEntity>(ImageEntity.PARTITION_KEY, id));
if (result.HttpStatusCode == (int)System.Net.HttpStatusCode.OK)
{
ImageEntity entity = result.Result as ImageEntity;
if (entity != null)
{
mergeRecordCallback(entity);
// TODO should check the response and handle appropriately
await CloudTable.ExecuteAsync(TableOperation.Merge(entity));
}
}
}
public async Task SendNewImageEvent(ImageEntity imageEntity)
{
// should be sending an array but we only have one item to send at a time
var items = new List <GridEvent <ImageEntity> >
{
new GridEvent <ImageEntity>
{
Data = imageEntity,
Subject = "newImage",
EventType = "newImage"
}
};
using (HttpClient client = new HttpClient())
{
// set the headers
client.DefaultRequestHeaders.Add("aeg-sas-key", Key);
client.DefaultRequestHeaders.UserAgent.ParseAdd("xai");
// create the request
using (var msg = new HttpRequestMessage(HttpMethod.Post, TopicEndpoint))
{
msg.Headers.Add("Accept", "application/json");
// set the body for the POST
msg.Content = new StringContent(JsonConvert.SerializeObject(items), Encoding.UTF8, "application/json");
msg.Content.Headers.ContentType = new MediaTypeHeaderValue("application/json");
// send the response
using (var response = await client.SendAsync(msg, HttpCompletionOption.ResponseContentRead))
{
var responseContent = await response.Content.ReadAsStringAsync();
}
}
}
}
public ImageAnalyzer(ImageEntity imageEntity, BlobManager blobManager, TableManager tableManager, string subscriptionKey)
: base(imageEntity, blobManager, tableManager, subscriptionKey)
{
}