public static Dictionary ParseFeedEndpointsJsonToDictionary()

in CredentialProvider.Microsoft/Util/FeedEndpointCredentialsParser.cs [51:110]
53 lines of code
11 McCabe index (conditional complexity)

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

        try
        {
            logger.Verbose(Resources.ParsingJson);
            Dictionary<string, EndpointCredentials> credsResult = new Dictionary<string, EndpointCredentials>(StringComparer.OrdinalIgnoreCase);
            EndpointCredentialsContainer endpointCredentials = System.Text.Json.JsonSerializer.Deserialize<EndpointCredentialsContainer>(feedEndpointsJson, options);
            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.ClientId == null)
                {
                    logger.Verbose(Resources.EndpointParseFailure);
                    break;
                }

                if (credentials.CertificateSubjectName != null && credentials.CertificateFilePath != null)
                {
                    logger.Verbose(Resources.EndpointParseFailure);
                    break;
                }

                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, EndpointCredentials>(StringComparer.OrdinalIgnoreCase); ;
        }
    }