public IHttpActionResult GetLocations([FromUri] string country)
{
try
{
return(Ok(_countryService.GetCities(country)));
}
catch (Exception exp)
{
_logger.Error("WeatherController failed at GetLocations", exp);
return(BadRequest());
}
}
private async Task ConsumerOnReceived(object sender, BasicDeliverEventArgs e)
{
try
{
CheckEventRequeueLimit(e);
var content = System.Text.Encoding.UTF8.GetString(e.Body);
TryGetMessageType(e, out var messageType);
await HandleMessage(content, messageType);
_channel.BasicAck(e.DeliveryTag, false);
}
catch (EventRequeueLimitReachedException ex)
{
_logger.Error(ex.Message, ex);
_channel.BasicReject(e.DeliveryTag, false);
}
catch (Exception ex)
{
_logger.Error($"Unable to process event '{e.DeliveryTag}': {ex.Message}", ex);
_channel.BasicReject(e.DeliveryTag, true);
}
}
private bool ConnectToQueue()
{
try
{
var factory = new ConnectionFactory
{
HostName = _queueConnectionSettings.Value.HostName,
Port = _queueConnectionSettings.Value.Port,
UserName = _queueConnectionSettings.Value.Username,
Password = _queueConnectionSettings.Value.Password
};
_connection = factory.CreateConnection();
return(true);
}
catch (Exception ex)
{
_logger.Error($"Unable to connect to Response Queue: {ex.Message}", ex);
return(false);
}
}
private Country GetWeather(IApiLogger <WeatherService> logger, string countryName, string cityName)
{
/* Work through available weather services until we find data.
* Similar approach to factory pattern, however, intention in here to provide more flexibility to
* add new clients later, through DI, without modifying the existing code
* */
foreach (var weatherService in _weatherServiceClients)
{
try
{
var weather = weatherService.GetWeather(countryName, cityName);
if (weather != null)
{
return(weather);
}
}
catch (Exception exp)
{
logger.Error("WeatherService failed at GetWeather", exp);
}
}
return(null);
}
public T InvokeApi <T>(string url, ApiRequestData data, IApiLogger logger)
{
string value = "";
try
{
var request = (HttpWebRequest)WebRequest.Create(url);
request.Credentials = CredentialCache.DefaultCredentials;
request.Timeout = data.requestTimeout;
// headers
if (data.acceptHeader != null)
{
request.Accept = data.acceptHeader;
}
foreach (KeyValuePair <string, string> header in data.headers)
{
request.Headers.Add(header.Key, header.Value);
}
request.Method = data.method.ToString();
//處理POST資料
if (data.method == ApiRequestData.Method.POST ||
data.method == ApiRequestData.Method.PUT)
{
var paramBytes = Encoding.UTF8.GetBytes(data.postData);
request.ContentType = data.contentTypeText;
request.ContentLength = paramBytes.Length;
using (var stream = request.GetRequestStream())
{
stream.Write(paramBytes, 0, paramBytes.Length);
}
}
logger.Info($"{url} req: {data.postData}");
using (var response = (HttpWebResponse)request.GetResponse())
{
//HttpStatusCode=200才算呼叫成功
if (response.StatusCode == HttpStatusCode.OK)
{
using (var sr = new StreamReader(response.GetResponseStream()))
{
value = sr.ReadToEnd();
}
}
else
{
throw new Exception(((int)response.StatusCode).ToString() + ":" + response.StatusDescription);
}
}
}
catch (Exception ex)
{
logger.Error($"invokeApi {ex.ToString()}");
}
logger.Info($"{url} resp: {value}");
return(JsonConvert.DeserializeObject <T>(value));
}
