public async Task Invoke(HttpContext context, IApiOrchestrator orchestrator, ILogger <ApiGatewayLog> logger)
{
ApiInfo apiInfo = null;
HubInfo hubInfo = null;
GatewayRouteInfo routeInfo = null;
try
{
var path = context.Request.Path.Value;
var segmentsMatch = Regex.Match(path, "^/?api/Gateway(/(?!orchestration)(hub/)?(?<api>.*?)/(?<key>.*?)(/.*?)?)?$",
RegexOptions.IgnoreCase | RegexOptions.Compiled);
if (segmentsMatch.Success)
{
var api = segmentsMatch.Groups["api"].Captures[0].Value;
var key = segmentsMatch.Groups["key"].Captures[0].Value;
if (path.ToLower().Contains("api/gateway/hub"))
{
hubInfo = orchestrator.GetHub(api);
routeInfo = hubInfo.Mediator.GetRoute(key);
}
else
{
apiInfo = orchestrator.GetApi(api.ToString());
routeInfo = apiInfo.Mediator.GetRoute(key.ToString());
}
if (routeInfo.Verb.ToString() != context.Request.Method.ToUpper())
{
throw new Exception("Invalid verb");
}
}
}
catch (Exception ex)
{
logger.LogError(ex, "Api Gateway Orchestration api/key error.");
context.Response.StatusCode = StatusCodes.Status404NotFound;
await context.Response.CompleteAsync();
return;
}
try
{
await _next(context);
}
catch (Exception ex)
{
logger.LogError(ex, "Api Gateway error.");
await HandleExceptionAsync(context, ex);
}
}
public IMediator AddRoute(string key, GatewayVerb verb, RouteInfo routeInfo)
{
var gatewayRouteInfo = new GatewayRouteInfo
{
Verb = verb,
Route = routeInfo
};
paths.Add(key.ToLower(), gatewayRouteInfo);
return(this);
}
public IHubMediator AddRoute(string key, HubRouteInfo routeInfo)
{
var gatewayRouteInfo = new GatewayRouteInfo
{
Verb = GatewayVerb.POST,
HubRoute = routeInfo
};
paths.Add(key.ToLower(), gatewayRouteInfo);
return(this);
}
public IMediator AddRoute(string key, GatewayVerb verb, Func <ApiInfo, HttpRequest, Task <object> > exec)
{
var gatewayRouteInfo = new GatewayRouteInfo
{
Verb = verb,
Route = new RouteInfo
{
Exec = exec
}
};
paths.Add(key.ToLower(), gatewayRouteInfo);
return(this);
}