/// <summary>
/// Parse bytes to json string
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="bytes">Bytes to be parsed</param>
/// <param name="logger">Optional, logger</param>
/// <param name="methodName">Optional, calling method name</param>
/// <param name="isDictionary">Option, Is json object is a dictionary</param>
/// <returns>Returns T</returns>
public static T ParseBytes <T>(byte[] bytes, IKiteLogger logger = null, [CallerMemberName] string methodName = null, bool isDictionary = false)
{
if (bytes == null)
{
return(default(T));
}
try
{
T obj = default(T);
//using dataContractSerializer
DataContractJsonSerializer serializer = null;
if (isDictionary)
{
serializer = new DataContractJsonSerializer(typeof(T), new DataContractJsonSerializerSettings()
{
UseSimpleDictionaryFormat = true
});
}
else
{
serializer = new DataContractJsonSerializer(typeof(T));
}
using (MemoryStream ms = new MemoryStream(bytes))
{
ms.Position = 0;
obj = (T)serializer.ReadObject(ms);
}
/*
* using Newtonsoft
* T obj = Newtonsoft.Json.JsonConvert.DeserializeObject<T>(str, new Newtonsoft.Json.JsonSerializerSettings()
* {
* NullValueHandling = Newtonsoft.Json.NullValueHandling.Ignore,
* MissingMemberHandling = Newtonsoft.Json.MissingMemberHandling.Ignore
* });
*/
if (obj == null)
{
try
{
logger?.OnLog($"{methodName} : Failed to parse data");
}
catch (Exception ex)
{
}
return(default(T));
}
return(obj);
}
catch (Exception ex)
{
try
{
logger?.OnException(ex);
}
catch (Exception ex1)
{
}
return(default(T));
}
}
/// <summary>
/// Downloads the symbol list
/// </summary>
/// <param name="apiKey">Api key</param>
/// <param name="accessToken">Access token</param>
/// <param name="exchange">Queried exchange. If set to null will download the all available symbols</param>
/// <param name="filepath">If specified, will save the downloaded data to the specified path</param>
/// <param name="logger">Optional logger</param>
/// <returns></returns>
public static T[] GetSymbols <T>(string apiKey, string accessToken, string url, string filepath = null, IKiteLogger logger = null) where T : SymbolBase, new()
{
if (string.IsNullOrEmpty(url))
{
return(null);
}
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.Headers.Add(versionHeader, version);
request.Headers.Add("Authorization", $"token {apiKey}:{accessToken}");
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
if (response?.StatusCode == HttpStatusCode.OK)
{
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
List <T> tmp = new List <T>();
List <string> tmpLines = new List <string>();
while (!reader.EndOfStream)
{
string line = reader.ReadLine();
T obj = new T();
if (obj.TryParse(line))
{
tmp.Add(obj as T);
tmpLines.Add(line);
}
}
if (!string.IsNullOrWhiteSpace(filepath))
{
string folder = Path.GetDirectoryName(filepath);
if (Directory.Exists(folder))
{
if (File.Exists(filepath))
{
File.Delete(filepath);
}
File.AppendAllLines(filepath, tmpLines);
}
}
if (tmp.Count > 0)
{
return(tmp.ToArray());
}
}
}
}
}
catch (Exception ex)
{
try
{
logger?.OnException(ex);
}
catch (Exception ex1)
{
}
}
return(null);
}
/// <summary>
/// The http request method
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="method">Query method</param>
/// <param name="apiKey">Api key</param>
/// <param name="accessToken">Access token</param>
/// <param name="url">Url</param>
/// <param name="payload">Payload</param>
/// <param name="logger">Optional, logger</param>
/// <param name="isDictionary">Is json string is a dictionary object. Default value is false</param>
/// <returns></returns>
private static T QueryHttp <T>(QueryMethod method, string apiKey, string accessToken, string url, string payload = null, IKiteLogger logger = null, bool isDictionary = false)
{
if (!Enum.IsDefined(typeof(QueryMethod), method))
{
return(default(T));
}
if (string.IsNullOrEmpty(url))
{
return(default(T));
}
try
{
logger?.OnLog($"{method}|apiKey={apiKey}, accessToken= {accessToken}, Url={url}, Payload= {payload}");
}
catch (Exception ex)
{
}
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.Method = method.ToString().ToUpper();
request.AllowAutoRedirect = true;
request.Headers.Add(versionHeader, version);
request.Headers.Add("Authorization", $"token {apiKey}:{accessToken}");
if (method == QueryMethod.POST || method == QueryMethod.PUT)
{
request.ContentType = "application/x-www-form-urlencoded";
if (!string.IsNullOrEmpty(payload))
{
byte[] postData = Encoding.ASCII.GetBytes(payload);
request.ContentLength = postData.Length;
using (Stream stream = request.GetRequestStream())
{
stream.Write(postData, 0, postData.Length);
}
}
}
using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
{
if (response.StatusCode == HttpStatusCode.OK)
{
//if logger is not null we will log the json string
if (logger != null)
{
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
Response <T> obj = ParseString <Response <T> >(reader.ReadToEnd(), logger: logger, methodName: typeof(T).Name, isDictionary: isDictionary);
if (obj == null)
{
return(default(T));
}
return(obj.data);
}
}
else //we serialize straight away
{
DataContractJsonSerializer serializer = null;
if (isDictionary)
{
serializer = new DataContractJsonSerializer(typeof(Response <T>), new DataContractJsonSerializerSettings()
{
UseSimpleDictionaryFormat = true
});
}
else
{
serializer = new DataContractJsonSerializer(typeof(Response <T>));
}
Response <T> obj = serializer.ReadObject(response.GetResponseStream()) as Response <T>;
if (obj == null)
{
return(default(T));
}
return(obj.data);
}
}
}
}
catch (WebException we)
{
try
{
DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(ServerError));
ServerError se = serializer.ReadObject(we.Response.GetResponseStream()) as ServerError;
if (se != null)
{
try
{
logger?.OnLog($"{se.error_type} | {se.status} | {se.message}");
}
catch (Exception ex)
{
}
try
{
logger?.OnException(new ServerException(se, we.Status, typeof(T)));
}
catch (Exception ex)
{
}
}
}
catch (Exception ex)
{
try
{
logger?.OnException(ex);
}
catch (Exception ex1)
{
}
}
}
catch (Exception ex)
{
try
{
logger?.OnException(ex);
}
catch (Exception ex1)
{
}
}
return(default(T));
}