internal static Attribute GetResolvedAttribute()

in src/Microsoft.NET.Sdk.Functions.Generator/TypeUtility.cs [65:102]
33 lines of code
8 McCabe index (conditional complexity)

        internal static Attribute GetResolvedAttribute(ParameterDefinition parameter, CustomAttribute customAttribute)
        {
            Attribute attribute = customAttribute.ToReflection();

            if (attribute != null &&
                attribute.GetType().GetTypeInfo().IsImplementing("IConnectionProvider") &&
                string.IsNullOrEmpty(attribute.GetValue<string>("Connection")))
            {
                // if the attribute doesn't specify an explicit connection, walk up
                // the hierarchy looking for an override specified via attribute
                var connectionProviderAttribute = attribute
                    .GetType()
                    .GetTypeInfo()
                    .GetCustomAttributes()
                    .FirstOrDefault(a => a.GetType().Name == "ConnectionProviderAttribute");

                if (connectionProviderAttribute?.GetValue<Type>("ProviderType") != null)
                {
                    var connectionOverrideProvider = GetHierarchicalAttributeOrNull(parameter, connectionProviderAttribute.GetValue<Type>("ProviderType"))?.ToReflection();
                    if (connectionOverrideProvider != null &&
                        connectionOverrideProvider.GetType().GetTypeInfo().IsImplementing("IConnectionProvider"))
                    {
                        var iConnectionProvider = connectionOverrideProvider.GetType().GetTypeInfo().GetInterface("IConnectionProvider");
                        var propertyInfo = iConnectionProvider.GetProperty("Connection");
                        var connectionValue = (string)propertyInfo.GetValue(attribute);
                        connectionValue = connectionValue
                            ?? connectionOverrideProvider.GetValue<string>("Connection")
                            ?? connectionOverrideProvider.GetValue<string>("Account");
                        if (!string.IsNullOrEmpty(connectionValue))
                        {
                            attribute.SetValue("Connection", connectionValue);
                        }
                    }
                }
            }

            return attribute;
        }