public static Dictionary ParseExternalFeedEndpointsJsonToDictionary()

in CredentialProvider.Microsoft/Util/FeedEndpointCredentialsParser.cs [112:169]
51 lines of code
10 McCabe index (conditional complexity)

    public static Dictionary<string, ExternalEndpointCredentials> ParseExternalFeedEndpointsJsonToDictionary(ILogger logger)
    {
        string feedEndpointsJson = Environment.GetEnvironmentVariable(EnvUtil.BuildTaskExternalEndpoints);
        if (string.IsNullOrWhiteSpace(feedEndpointsJson))
        {
            return new Dictionary<string, ExternalEndpointCredentials>(StringComparer.OrdinalIgnoreCase);
        }

        try
        {
            logger.Verbose(Resources.ParsingJson);
            if (feedEndpointsJson.Contains("':"))
            {
                logger.Warning(Resources.InvalidJsonWarning);
            }

            Dictionary<string, ExternalEndpointCredentials> credsResult = new Dictionary<string, ExternalEndpointCredentials>(StringComparer.OrdinalIgnoreCase);
            ExternalEndpointCredentialsContainer endpointCredentials = JsonConvert.DeserializeObject<ExternalEndpointCredentialsContainer>(feedEndpointsJson);
            if (endpointCredentials == null)
            {
                logger.Verbose(Resources.NoEndpointsFound);
                return credsResult;
            }

            foreach (var credentials in endpointCredentials.EndpointCredentials)
            {
                if (credentials == null)
                {
                    logger.Verbose(Resources.EndpointParseFailure);
                    break;
                }

                if (credentials.Username == null)
                {
                    credentials.Username = "VssSessionToken";
                }

                if (!Uri.TryCreate(credentials.Endpoint, UriKind.Absolute, out var endpointUri))
                {
                    logger.Verbose(Resources.EndpointParseFailure);
                    break;
                }

                var urlEncodedEndpoint = endpointUri.AbsoluteUri;
                if (!credsResult.ContainsKey(urlEncodedEndpoint))
                {
                    credsResult.Add(urlEncodedEndpoint, credentials);
                }
            }

            return credsResult;
        }
        catch (Exception ex)
        {
            logger.Verbose(string.Format(Resources.VstsBuildTaskExternalCredentialCredentialProviderError, ex));
            return new Dictionary<string, ExternalEndpointCredentials>(StringComparer.OrdinalIgnoreCase);
        }
    }