/// <summary>
/// Verifies the extension rule.
/// </summary>
/// <param name="context">The Interop service context</param>
/// <param name="info">out parameter to return violation information when rule does not pass</param>
/// <returns>true if rule passes; false otherwise</returns>
public override bool?Verify(ServiceContext context, out ExtensionRuleViolationInfo info)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
bool?passed = null;
ExtensionRuleResultDetail detail = new ExtensionRuleResultDetail(this.Name);
var expandRestrictions = AnnotationsHelper.GetExpandRestrictions(context.MetadataDocument, context.VocCapabilities);
if (string.IsNullOrEmpty(expandRestrictions.Item1) ||
null == expandRestrictions.Item3 || !expandRestrictions.Item3.Any())
{
detail.ErrorMessage = "Cannot find an appropriate entity-set which supports $expand system query options.";
info = new ExtensionRuleViolationInfo(context.Destination, context.ResponsePayload, detail);
return(passed);
}
string entitySet = expandRestrictions.Item1;
string navigProp = expandRestrictions.Item3.First().NavigationPropertyName;
string url = string.Format("{0}/{1}", context.ServiceBaseUri.OriginalString.TrimEnd('/'), entitySet);
var resp = WebHelper.Get(new Uri(url), Constants.V4AcceptHeaderJsonFullMetadata, RuleEngineSetting.Instance().DefaultMaximumPayloadSize, context.RequestHeaders);
detail.URI = url;
detail.ResponsePayload = resp.ResponsePayload;
detail.ResponseHeaders = resp.ResponseHeaders;
detail.HTTPMethod = "GET";
detail.ResponseStatusCode = resp.StatusCode.ToString();
if (null == resp || HttpStatusCode.OK != resp.StatusCode)
{
detail.ErrorMessage = JsonParserHelper.GetErrorMessage(resp.ResponsePayload);
info = new ExtensionRuleViolationInfo(new Uri(url), resp.ResponsePayload, detail);
return(passed);
}
JObject feed;
resp.ResponsePayload.TryToJObject(out feed);
var entities = JsonParserHelper.GetEntriesThatHaveAValue(feed);
if (null == entities || 0 == entities.Count)
{
detail.ErrorMessage = string.Format("The entity-set {0} has no entity.", entitySet);
info = new ExtensionRuleViolationInfo(new Uri(url), resp.ResponsePayload, detail);
return(passed);
}
var entity = entities.First;
string entityURL = null != entity[Constants.V4OdataId] ? entity[Constants.V4OdataId].ToString() : string.Empty;
if (string.IsNullOrEmpty(entityURL))
{
detail.ErrorMessage = "Cannot find the annotation @odata.id in the current entity.";
info = new ExtensionRuleViolationInfo(new Uri(url), resp.ResponsePayload, detail);
return(passed);
}
url = string.Format("{0}?$expand={1}/$ref", entityURL, navigProp);
if (url.IndexOf(context.ServiceBaseUri.OriginalString) < 0)
{
url = context.ServiceBaseUri.OriginalString + url;
}
resp = WebHelper.Get(new Uri(url), Constants.AcceptHeaderJson, RuleEngineSetting.Instance().DefaultMaximumPayloadSize, context.RequestHeaders);
detail = new ExtensionRuleResultDetail(this.Name, url, "GET", StringHelper.MergeHeaders(Constants.AcceptHeaderJson, context.RequestHeaders), resp);
detail.URI = url;
detail.ResponsePayload = resp.ResponsePayload;
detail.ResponseHeaders = resp.ResponseHeaders;
detail.HTTPMethod = "GET";
detail.ResponseStatusCode = resp.StatusCode.ToString();
if (resp.StatusCode == HttpStatusCode.OK)
{
JObject entry;
resp.ResponsePayload.TryToJObject(out entry);
if (entry != null && JTokenType.Object == entry.Type)
{
bool entity_error = false;
try
{
entity = entry[navigProp].First;
}
catch
{
entity_error = true;
passed = false;
detail.ErrorMessage = "The service does not execute an accurate result, because the value of the Navigation (" + navigProp + ") does not exist in the entity. Request attempted: " + url + " Response: " + resp.ResponsePayload;
}
if (!entity_error)
{
try
{
var test = entity;
var test1 = entity[Constants.V4OdataId];
url = entity[Constants.V4OdataId].ToString();
}
catch (Exception ex)
{
entity_error = true;
passed = false;
detail.ErrorMessage = ex.Message + " Attempt to access: " + Constants.V4OdataId + " Response: " + resp.ResponsePayload;
}
if (!entity_error)
{
if (url.IndexOf(context.ServiceBaseUri.OriginalString) < 0)
{
url = context.ServiceBaseUri.OriginalString + url;
}
Uri testurl = null;
try
{
testurl = new Uri(url);
}
catch
{
}
if (testurl != null)
{
resp = WebHelper.Get(new Uri(url), Constants.AcceptHeaderJson, RuleEngineSetting.Instance().DefaultMaximumPayloadSize, context.RequestHeaders);
detail.URI = url;
detail.ResponsePayload = resp.ResponsePayload;
detail.ResponseHeaders = resp.ResponseHeaders;
detail.HTTPMethod = "GET";
detail.ResponseStatusCode = resp.StatusCode.ToString();
if (resp.StatusCode == HttpStatusCode.OK)
{
passed = true;
}
else
{
passed = false;
detail.ErrorMessage = "The service does not execute an accurate result, because the value of the annotation '@odata.id' (" + url + ") is a bad link.";
}
}
else
{
passed = false;
detail.ErrorMessage = "The service does not execute an accurate result, because the value of the annotation '@odata.id' (" + url + ") is a bad link.";
}
}
}
}
}
else
{
passed = false;
detail.ErrorMessage = "The service does not support the '$ref' segment for expanded properties.";
}
info = new ExtensionRuleViolationInfo(context.Destination, context.ResponsePayload, detail);
return(passed);
}