/// <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;
info = null;
JObject entry;
context.ResponsePayload.TryToJObject(out entry);
if (entry != null && entry.Type == JTokenType.Object && context.OdataMetadataType == ODataMetadataType.MinOnly)
{
JsonParserHelper.ClearProperyValsList();
List <JToken> odataMetadataVals = JsonParserHelper.GetSpecifiedPropertyValsFromEntryPayload(entry, Constants.OdataV4JsonIdentity, MatchType.Equal);
JsonParserHelper.ClearProperyValsList();
List <JToken> associationLinkVals = JsonParserHelper.GetSpecifiedPropertyValsFromEntryPayload(entry, Constants.OdataAssociationLinkPropertyNameSuffix, MatchType.Contained);
string url = string.Empty;
if (odataMetadataVals.Count == 1)
{
string odataMetadataValStr = odataMetadataVals[0].ToString().Trim('"');
int index = odataMetadataValStr.IndexOf(Constants.Metadata);
url = odataMetadataValStr.Remove(index, odataMetadataValStr.Length - index);
foreach (var associationLinkVal in associationLinkVals)
{
if (Uri.IsWellFormedUriString(associationLinkVal.ToString().Trim('"'), UriKind.Relative))
{
url += associationLinkVal.ToString().Trim('"') + @"/$ref";
}
else
{
url = associationLinkVal.ToString().Trim('"');
}
Uri uri = new Uri(url, UriKind.RelativeOrAbsolute);
// Send a request with "application/json;odata=minimalmetadata" in Accept header.
string acceptHeader = Constants.V4AcceptHeaderJsonMinimalMetadata;
Response response = WebHelper.Get(uri, acceptHeader, RuleEngineSetting.Instance().DefaultMaximumPayloadSize, context.RequestHeaders);
// If response's status code is not equal to 200, it will indicate the url cannot be computed.
if (response.StatusCode != HttpStatusCode.OK)
{
passed = true;
}
else
{
passed = false;
info = new ExtensionRuleViolationInfo(this.ErrorMessage, context.Destination, context.ResponsePayload);
break;
}
}
}
}
return(passed);
}