public static XmlAction GetXmlAction(this XmlApiRecord apiRecord, IApiProxyConfiguration proxyConfiguration)
{
if (!proxyConfiguration.FallbackToDefaultApi)
{
if (apiRecord.ResponseContent != null || apiRecord.Mock)
{
return(XmlAction.ReplayFromMock);
}
return(XmlAction.None);
}
var xmlConfiguration = apiRecord.Configuration;
if ((xmlConfiguration != null && apiRecord.Mock && !string.IsNullOrWhiteSpace(xmlConfiguration.Transform?.RequestContent?.XsltFileName)))
{
return(XmlAction.ReplayFromTransformedRequestMock);
}
if (xmlConfiguration?.Transform != null)
{
return(XmlAction.TransformResponse);
}
if (apiRecord.ResponseContent != null || apiRecord.Mock)
{
return(XmlAction.ReplayFromMock);
}
return(XmlAction.ReplayFromRealApi);
}
private HttpResponseMessage ReplayResponseFromApiRecord(XmlApiRecord apiRecord, string responseContent)
{
HttpStatusCode statusCode = HttpStatusCode.BadRequest;
Enum.TryParse(apiRecord.StatusCode, true, out statusCode);
var contentType = apiRecord.ResponseContentType;
return(new HttpResponseMessage()
{
StatusCode = statusCode,
Content = !string.IsNullOrEmpty(responseContent) ? new StringContent(
responseContent,
Encoding.UTF8,
contentType
) : null
});
}
private string GetRelativeQueryParameter(HttpRequestMessage request, XmlApiRecord record)
{
if (string.IsNullOrWhiteSpace(record.Configuration?.Transform?.Query?.TrimQueryParameters))
{
return(request.RequestUri.PathAndQuery);
}
var resultantQueries = new List <KeyValuePair <string, string> >();
var queryParametersTobeTrimmed = record.Configuration?.Transform?.Query?.TrimQueryParameters.Split(new char[] { ';' }, StringSplitOptions.RemoveEmptyEntries).Select(queryParameterName => queryParameterName.ToLowerInvariant()).Select(
queryParameterName =>
{
var keyValue = queryParameterName.Split(new char[] { '=' });
if (keyValue.Length >= 2)
{
return(new KeyValuePair <string, string>(keyValue[0], keyValue[1]));
}
return(new KeyValuePair <string, string>(queryParameterName, string.Empty));
});
var queryParameters = request.GetQueryNameValuePairs();
if (queryParametersTobeTrimmed.Any() && queryParameters.Any())
{
resultantQueries.AddRange(
queryParameters.Where(queryParameter =>
{
var selectedQuery = queryParametersTobeTrimmed.FirstOrDefault(
pair =>
{
if (pair.Key == queryParameter.Key.ToLowerInvariant())
{
if (pair.Value != String.Empty)
{
return(queryParameter.Value.ToLowerInvariant() == pair.Value);
}
}
return(false);
});
return(!string.IsNullOrWhiteSpace(selectedQuery.Key));
}));
return(resultantQueries.Any() ? string.Format("{0}?{1}", request.RequestUri.AbsolutePath, string.Join("&", resultantQueries.Select(parameter => parameter.Key + "=" + parameter.Value))) : request.RequestUri.AbsolutePath);
}
return(request.RequestUri.PathAndQuery);
}
public XmlContentTypeApiProxyProvider(IApiProxyConfiguration proxyConfiguration, IApiRecorder apiRecorder, XmlApiRecord apiRecord)
{
if (proxyConfiguration == null)
{
throw new ArgumentNullException(nameof(proxyConfiguration));
}
ProxyConfiguration = proxyConfiguration;
if (apiRecorder == null)
{
throw new ArgumentNullException(nameof(apiRecorder));
}
ApiRecorder = apiRecorder;
if (apiRecord == null)
{
throw new ArgumentNullException(nameof(apiRecord));
}
_xmlApiRecord = apiRecord;
}
private async Task <string> TransformXmlRequestAndReplay(HttpRequestMessage request, Guid activityId, XmlApiRecord apiRecord, HttpContent realContent)
{
var transformedContent = apiRecord.ResponseContent;
if (!request.IsContentMediaTypeXml())
{
ApiProxyEvents.Raise.VerboseMessaging(string.Format("Skipping Request Transforming the as content type is not application/xml for request:{0}", request.RequestUri));
return(transformedContent);
}
var xsltFileName = apiRecord?.Configuration?.Transform?.RequestContent?.XsltFileName;
if (string.IsNullOrWhiteSpace(xsltFileName))
{
ApiProxyEvents.Raise.VerboseMessaging(string.Format("Skipping Request Transforming the as xmlt path is not specified for request:{0}", request.RequestUri));
return(transformedContent);
}
var effectiveXsltFileNamePath = Path.Combine(Path.GetDirectoryName(apiRecord.MockFilePath), xsltFileName);
var xmlContent = await realContent.ReadAsStringAsync();
IList <string> transformOutput;
ApiProxyEvents.Raise.VerboseMessaging(string.Format("Transforming the response using xslt:{0} for request:{1}, real response:{2}", effectiveXsltFileNamePath, request.RequestUri, xmlContent));
transformedContent = TransformContent(request, xmlContent, effectiveXsltFileNamePath, out transformOutput);
if (string.IsNullOrWhiteSpace(transformedContent))
{
ApiProxyEvents.Raise.VerboseMessaging(string.Format("Response Transform was skipped request:{0}, real response:{1}", request.RequestUri, xmlContent));
return(apiRecord.ResponseContent);
}
Dictionary <string, string> outDictionary = new Dictionary <string, string>();
transformOutput.ToList().ForEach(
msg =>
{
var pair = msg.Trim(' ').Split(new char[] { '=' }, StringSplitOptions.RemoveEmptyEntries);
if (!outDictionary.ContainsKey(pair[0]))
{
outDictionary.Add(pair[0], pair.Length > 1 ? pair[1] : String.Empty);
}
});
if (outDictionary.ContainsKey("StatusCode"))
{
apiRecord.StatusCode = outDictionary["StatusCode"];
}
return(transformedContent);
}
private async Task <HttpContent> TransformApiXmlRequestContent(HttpRequestMessage request, Guid activityId, XmlApiRecord apiRecord, HttpContent realContent)
{
if (!request.IsContentMediaTypeXml())
{
ApiProxyEvents.Raise.VerboseMessaging(string.Format("Skipping Request Transforming the as content type is not application/xml for request:{0}", request.RequestUri));
return(realContent);
}
var xsltFileName = apiRecord?.Configuration?.Transform?.RequestContent?.XsltFileName;
if (string.IsNullOrWhiteSpace(xsltFileName))
{
ApiProxyEvents.Raise.VerboseMessaging(string.Format("Skipping Request Transforming the as xmlt path is not specified for request:{0}", request.RequestUri));
return(realContent);
}
var effectiveXsltFileNamePath = Path.Combine(Path.GetDirectoryName(apiRecord.MockFilePath), xsltFileName);
var xmlContent = await realContent.ReadAsStringAsync();
IList <string> transformOutput;
ApiProxyEvents.Raise.VerboseMessaging(string.Format("Transforming the response using xslt:{0} for request:{1}, real response:{2}", effectiveXsltFileNamePath, request.RequestUri, xmlContent));
var transformedContent = TransformContent(request, xmlContent, effectiveXsltFileNamePath, out transformOutput);
if (string.IsNullOrWhiteSpace(transformedContent))
{
ApiProxyEvents.Raise.VerboseMessaging(string.Format("Response Transform was skipped request:{0}, real response:{1}", request.RequestUri, xmlContent));
return(realContent);
}
var contentType = realContent.Headers.ContentType.MediaType;
return(new StringContent(transformedContent,
Encoding.UTF8,
contentType));
}
private async Task <HttpContent> TransformApiUrlEncodeRequestContent(HttpRequestMessage request, Guid activityId, XmlApiRecord apiRecord, HttpContent realContent)
{
var contentType = request.Content.Headers.ContentType.MediaType;
if (contentType != "application/x-www-form-urlencoded")
{
ApiProxyEvents.Raise.VerboseMessaging(
$"Skipping Request Transforming the as content type is not application/x-www-form-urlencoded for request:{request.RequestUri}");
return(realContent);
}
var queryParametersTobeTrimmed = apiRecord.Configuration?.Transform?.RequestContent?.TrimQueryParameters.Split(new char[] { ';' }, StringSplitOptions.RemoveEmptyEntries).Select(queryParameterName => queryParameterName.ToLowerInvariant()).Select(
queryParameterName =>
{
var keyValue = queryParameterName.Split(new char[] { '=' });
if (keyValue.Length >= 2)
{
return(new KeyValuePair <string, string>(keyValue[0], keyValue[1]));
}
return(new KeyValuePair <string, string>(queryParameterName, string.Empty));
}).ToList();
if (queryParametersTobeTrimmed != null && !queryParametersTobeTrimmed.Any())
{
ApiProxyEvents.Raise.VerboseMessaging(string.Format("Skipping Request Transforming the as no query parametes needs to be trimmed for request:{0}", request.RequestUri));
return(realContent);
}
var urlEncodedContent = await realContent.ReadAsStringAsync();
ApiProxyEvents.Raise.VerboseMessaging(string.Format("Transforming the request by trimming content:{0} for request:{1}, real response:{2}", apiRecord.Configuration?.Transform?.RequestContent?.TrimQueryParameters, request.RequestUri, urlEncodedContent));
var urlParameters = urlEncodedContent.Split(new char[] { '&' }, StringSplitOptions.RemoveEmptyEntries).Select(
pair =>
{
var keyValue = pair.Split(new char[] { '=' });
if (keyValue.Length > 0 && keyValue.Length < 2)
{
return(new KeyValuePair <string, string>(keyValue[0], string.Empty));
}
return(new KeyValuePair <string, string>(keyValue[0], keyValue[1]));
}).ToList();
if (string.IsNullOrWhiteSpace(urlEncodedContent))
{
ApiProxyEvents.Raise.VerboseMessaging(string.Format("Request Transform was skipped for request:{0}, real response:{1}", request.RequestUri, urlEncodedContent));
return(realContent);
}
var transformedContent = urlEncodedContent;
var resultantQueries = new List <KeyValuePair <string, string> >();
if (queryParametersTobeTrimmed != null && (queryParametersTobeTrimmed.Any() && urlParameters.Any()))
{
resultantQueries.AddRange(
urlParameters.Where(queryParameter =>
{
var selectedQuery = queryParametersTobeTrimmed.FirstOrDefault(
pair =>
{
if (pair.Key == queryParameter.Key.ToLowerInvariant())
{
if (pair.Value != String.Empty)
{
return(queryParameter.Value.ToLowerInvariant() != pair.Value);
}
}
return(false);
});
return(!string.IsNullOrWhiteSpace(selectedQuery.Key));
}));
transformedContent = resultantQueries.Any() ? string.Join("&", resultantQueries.Select(parameter => parameter.Key + "=" + parameter.Value)) : string.Empty;
}
return(new StringContent(transformedContent,
Encoding.UTF8,
contentType));
}
private async Task <HttpContent> TransformApiRequestContent(HttpRequestMessage request, Guid activityId, XmlApiRecord apiRecord, HttpContent realContent)
{
var contentType = request.Content.Headers.ContentType.MediaType;
if (contentType != "application/xml" && contentType != "application/x-www-form-urlencoded" && contentType != "text/xml")
{
ApiProxyEvents.Raise.VerboseMessaging(
$"Skipping Request Transforming the as content type is not application/xml or application/x-www-form-urlencoded for request:{request.RequestUri}");
return(realContent);
}
if (contentType == "application/xml" || contentType == "text/xml")
{
return(await TransformApiXmlRequestContent(request, activityId, apiRecord, realContent));
}
return(await TransformApiUrlEncodeRequestContent(request, activityId, apiRecord, realContent));
}
private async Task <HttpResponseMessage> GetApiResponseFromDefaultApi(HttpRequestMessage request, XmlApiRecord apiRecord, Guid activityId)
{
// Else pass the request to the default api
if (ProxyConfiguration.DefaultApiAddress == null)
{
return(request.CreateResponse(HttpStatusCode.InternalServerError,
new ErrorResponse
{
ActivityId = activityId,
Message = "Default Api Address is not found"
}
));
}
//Trust all certificates
System.Net.ServicePointManager.ServerCertificateValidationCallback =
((sender, certificate, chain, sslPolicyErrors) => true);
using (HttpClient client = new HttpClient())
{
client.BaseAddress = ProxyConfiguration.DefaultApiAddress;
var requestUri = new Uri(client.BaseAddress, GetRelativeQueryParameter(request, apiRecord));
ApiProxyEvents.Raise.VerboseMessaging($"Routing Request to the Default Api Address : {requestUri}");
client.DefaultRequestHeaders.Clear();
foreach (var header in request.Headers)
{
if (header.Key != "Host")
{
client.DefaultRequestHeaders.Add(header.Key, header.Value);
}
}
HttpResponseMessage defaultApiresponse = null;
var transformOutput = new List <string>();
if (request.Method == HttpMethod.Get)
{
defaultApiresponse =
await
client.GetAsync(requestUri,
HttpCompletionOption.ResponseContentRead);
}
else if (request.Method == HttpMethod.Post)
{
defaultApiresponse =
await client.PostAsync(requestUri, await TransformApiRequestContent(request, activityId, apiRecord, request.Content));
}
else if (request.Method == HttpMethod.Put)
{
defaultApiresponse =
await client.PutAsync(requestUri, await TransformApiRequestContent(request, activityId, apiRecord, request.Content));
}
else if (request.Method == HttpMethod.Delete)
{
defaultApiresponse = await client.DeleteAsync(requestUri);
}
if (defaultApiresponse != null)
{
ApiProxyEvents.Raise.VerboseMessaging(
$"Response from the Default Api , request :{requestUri}, status :{defaultApiresponse.StatusCode}");
// Record the api req/res if enabled
await ApiRecorder.RecordApi(request, defaultApiresponse);
return(defaultApiresponse);
}
return(request.CreateResponse(HttpStatusCode.InternalServerError,
new ErrorResponse
{
ActivityId = activityId,
Message = "Request to Default Api with the given Method cannot be done"
}
));
}
}
private HttpResponseMessage ReplayResponseFromApiRecord(XmlApiRecord apiRecord)
{
return(ReplayResponseFromApiRecord(apiRecord, apiRecord.ResponseContent));
}
