public CompletedEventArgs(Exception error, RequestFailure requestFailure = null)
: this()
{
this.Error = error;
this.RequestFailure = requestFailure;
}
private RequestFailure CreateFailure(string reason, Exception error = null)
{
var fail = new RequestFailure { Reason = reason, Error = error, Timeout = this.Timeout, Url = this.Url };
var webEx = error as WebException;
Uri uri;
var validUri = Uri.TryCreate(fail.Url, UriKind.RelativeOrAbsolute, out uri);
if (null != webEx)
{
fail.StatusText = webEx.Status.ToString();
var resp = webEx.Response as HttpWebResponse;
if (null != resp)
{
fail.StatusCodeText = resp.StatusCode.ToString();
if (resp.StatusCode == HttpStatusCode.NotFound)
{
fail.NotFound = true;
fail.IsCommon = true;
if (validUri)
{
fail.FriendlyMessage = string.Format(
"Received a Not Found response from host {0}. Verify your connectivity and host availability and try again later.",
uri.Host);
}
}
}
}
else
{
if (reason == TimeoutReason)
{
fail.IsCommon = true;
if (validUri)
{
fail.FriendlyMessage = string.Format(
"Timeout waiting for host {0}. Verify your connectivity and host availability and try again later. Timeout is '{1}'",
uri.Host, this.Timeout);
}
}
}
return fail;
}
private static void InvokeOnFailure(Action<RequestFailure> onFailure, RequestFailure failure)
{
DispatchUtil.SafeDispatch(() => onFailure(failure));
}
private void LocalAfterRequestFailure(RequestFailure failure)
{
LogInstance.LogInfo("Call complete with failure to {0} in {1}", this.Url, CallTimer.Stop());
AfterRequestFailure(failure);
}
protected virtual void AfterRequestFailure(RequestFailure failure)
{
var ex = new Exception(string.Format("Request failed with reason '{0}'; see inner exception", failure.Reason), failure.Error);
LogInstance.LogError("{0}: Service call failure. Reason: {1}, Error: {2}", this.GetType().Name, failure.Reason, failure.Error);
OnAfterCompleted(new CompletedEventArgs(ex, failure));
}
protected override void AfterRequestFailure(RequestFailure failure)
{
// if we have something in cache, load that, even if expired; better than no data at all
if (_cacheInfo.State != CacheStates.NotFound)
{
LoadFromCache(expiredOkay:true);
}
// let base log error, raise completed
base.AfterRequestFailure(failure);
}