// 작업 결과 값을 반환할 경우 CodeActivity<TResult>에서 파생되고
// Execute 메서드에서 값을 반환합니다.
protected override void Execute(CodeActivityContext context)
{
var rest_api_key = context.GetValue(RestApiKey);
var file_path = context.GetValue(FilePath);
var image_url = context.GetValue(ImageUrl);
var threshold = context.GetValue(Threshold);
if (threshold == 0.0)
{
threshold = 0.7; //default
}
if (string.IsNullOrEmpty(rest_api_key))
{
throw new Exception("Kakao Vision API를 호출하기 위한 REST API KEY 값이 없습니다.");
}
if (string.IsNullOrEmpty(file_path) && string.IsNullOrEmpty(image_url))
{
throw new Exception("얼굴 이미지 판단을 위한 이미지 정보가 없습니다.");
}
HttpResponseMessage response = null;
var client = new HttpClient();
client.DefaultRequestHeaders.Add("Authorization", string.Format("KakaoAK {0}", rest_api_key));
if (!string.IsNullOrEmpty(file_path))
{
MultipartFormDataContent formData = new MultipartFormDataContent();
try
{
FileInfo fileInfo = new FileInfo(file_path);
if (fileInfo.Exists && fileInfo.Length > 0)
{
var imageBuf = new byte[fileInfo.Length];
imageBuf = File.ReadAllBytes(fileInfo.FullName);
if (imageBuf.Length > 0)
{
formData.Add(new StreamContent(new MemoryStream(imageBuf)), "file", fileInfo.Name);
}
response = client.PostAsync(API_ENDPOINT, formData).Result;
}
}
catch (System.IO.IOException ioe)
{
new Exception(string.Format("이미지 파일을 읽을수 없습니다. 오류 메세지 : {0}", ioe.Message));
}
}
else if (!string.IsNullOrEmpty(image_url))
{
var body = new StringContent(String.Format("image_url={0}", image_url), Encoding.UTF8, "application/x-www-form-urlencoded");
response = client.PostAsync(API_ENDPOINT, body).Result;
}
//System.Console.WriteLine(string.Format("StatusCode : {0}", response.StatusCode));
if (response != null && response.IsSuccessStatusCode)
{
double age = 0, male = 0.0, female = 0.0;
var content = response.Content.ReadAsStringAsync().GetAwaiter().GetResult();
//System.Console.WriteLine(content);
var jsonresp = JObject.Parse(content);
var faces = (JArray)jsonresp["result"]["faces"];
//System.Console.WriteLine("Number of Faces : {0} and Faces data : {1}", faces.Count, faces.ToString());
if (faces.Count > 0)
{
male = (double)faces[0]["facial_attributes"]["gender"]["male"];
female = (double)faces[0]["facial_attributes"]["gender"]["female"];
age = (double)faces[0]["facial_attributes"]["age"];
}
Male.Set(context, male);
Female.Set(context, female);
Age.Set(context, age);
Response.Set(context, content);
ErrorCode.Set(context, "OK");
}
else
{
ErrorCode.Set(context, response.StatusCode.ToString());
Male.Set(context, 0.0);
Female.Set(context, 0.0);
Age.Set(context, 0.0);
Response.Set(context, string.Empty);
}
}