private static string SerializeWriteRequest(WriteRequest request)
{
var queryList = new List <string>();
foreach (Point point in request.Points)
{
string value = $" value={point.Value.ToString(new CultureInfo("en-US"))}";
string timestamp = point.Timestamp.HasValue ? $" { point.Timestamp.Value.ToUnixNanoseconds().ToString() }" : string.Empty;
queryList.Add($"{ request.Name }{ value }{ timestamp }");
}
return(string.Join("\n", queryList));
}
public async Task Write(WriteRequest writeRequest)
{
if (writeRequest == null)
{
throw new ArgumentNullException(nameof(writeRequest));
}
var query = new Dictionary <string, string>();
query.Add("db", this._settings.DatabaseName);
string queryAsString = BuildQuery(query);
var uriBuilder = new UriBuilder(_settings.DatabaseAddress)
{
Path = "write",
Query = queryAsString
};
HttpRequestMessage request = PrepareRequest(HttpMethod.Post, uriBuilder.Uri);
try
{
string serializedRequest = SerializeWriteRequest(writeRequest);
_logger.LogDebug("Write HTTP request | Method: {0}, Uri: {1}, Content {2}", request.Method, request.RequestUri, serializedRequest);
request.Content = new StringContent(serializedRequest, Encoding.UTF8, "text/plain");
HttpResponseMessage response = await this._httpClient.SendAsync(request);
await response.EnsureSuccessStatusCodeAsync();
}
catch (Exception ex)
{
throw new MeasurementsRepositoryException("Cannot write measurements into database.", ex);
}
}