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Stuart Clennett

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Stuart Clennett last won the day on December 13 2018

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  • Delphi-Version
    Delphi 10.1 Berlin

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  1. Hi @Andrea Magni Ah brilliant, I wondered what "IsReference" meant 😄 Thanks again
  2. Stuart Clennett

    FireDAC Connections

    Hello Andrea, That's excellent, thank you very much for your detailed answer. I agree with you that the Connection attribute seems a much cleaner implementation and I will have a go at refactoring my project. Thanks again, Best wishes, Stuart
  3. Hi, Is there anyway I can use a TFDQuery owned by a TDataModule with the resource result type TFDDataset (produces TMediaType.Application_JSON) ? At present MARS adds the FDQuery to the Activation context, so it tries to free it & it's already freed when the Datamodule is freed (as part of the resource cleanup) in the TMARSActivation.Invoke, e.g. function TAssessmentResource.GetAssessment(const id: string): TFDDataSet; begin // result := FData.qryAssessmentProperties; <-- results in Invalid Pointer Operation (FData is private DataModule) result := FD.CreateQuery(SQL_ASSESSMENT_PROPERTIES, nil, True, 'assessmentProperties'); TFDQuery(result).Params[0].AsString := id; end; The cause is as below: procedure TMARSActivation.Invoke; // [..snip..] begin try // [ ... invoke code ... ] finally // teardown phase FTeardownTime := TStopwatch.StartNew; if Assigned(FResourceInstance) then FResourceInstance.Free; //<-- datamodule & TFQuery freed here FreeContext; //<-- TFDQuery is in the current context so attempts to free here = Invalid Pointer Operation FTeardownTime.Stop; end; I'd rather not have to create my own JSON stream, but I'd like to have my DB logic encapsulated in a data module. Thanks Stuart
  4. Stuart Clennett

    FireDAC Connections

    Ah, figured it out. FEngine.BeforeHandleRequest := function (const AEngine: TMARSEngine; const AURL: TMARSURL; const ARequest: TWebRequest; const AResponse: TWebResponse; var Handled: Boolean): Boolean var App: TMARSApplication; begin Result := True; // skip favicon requests (browser) ... [snip] // Handle CORS and PreFlight ... [snip] // Get the default connection name based on the host URL if (pos('localhost', AUrl.URL) > 0) or (pos('192.168.', aUrl.URL) > 0) then cConnectionDefname := 'LOCAL_DB' else cConnectionDefName := 'MAIN_DB'; // apply to every application for App in AEngine.Applications.Values do App.Parameters.Values['FireDAC.ConnectionDefName'] := cConnectionDefName; end; So I get the default connection def name based on the URL. Then set the correct parameter for each hosted application. (My previous mistake was setting the `FireDAC.ConnectionDefName` parameter at the Engine level) If anyone can think of a better or more elegant way, please let me know. Thanks
  5. Stuart Clennett

    FireDAC Connections

    Thanks Lars. I'm making a lot of use of the TMARSFireDAC instance (usually called FD) that gets injected into the resource classes which is great for simple data -> api tasks. I only rarely use a separate datamodule with an FDConnection component. When I do, I can just set the FDConnection1.ConnectionDefName to whatever is in the INI file in DataModuleCreate. I can also set FD.ConnectionDefName, but the thing I'm most struggling with is where? I can't see any way to set the default connection name in BeforeHandleRequest. The RegisterBeforeInvoke has access to the Application.Parameters (where I think I can set ['FireDAC.ConnectionDefName']) but it's called after the TMARSFireDAC instance is already created and injected. 😕
  6. Stuart Clennett

    FireDAC Connections

    Hi, I'm looking at the TMARSFDDataModuleResource and I see that it has protected members `FD` (TMarsFireDAC) and `URL` (TMARSURL). In my descendant class both of these are `nil` references. Is there a way to use this? Reason is I'm trying to switch DB connections based on the server's own host URL. E.g. if it's accessed via localhost or 192.168.x.x then use the LOCAL_DB connection def, otherwise use PROD_DB Edit: Which also begs the question, where is the best place to call `FD.ConnectionDefName := MyConnectionDefName;` ? Thanks Stuart
  7. Stuart Clennett

    Handling MultipartFormData

    Hi Andrea, Thanks very much. Confirmed working with Postman and the delphi demo client. Still can't get my HTML to work though - it just uploads the file name not the file contents. Looking into this now. *Edit* My bad forgot the enctype="multipart/form-data" attribute from the form tag (which is ironic given that I was testing multipart/form-data, ha ha) Kind regards, Stuart
  8. Stuart Clennett

    Handling MultipartFormData

    Hi Andrea, I want to implement this in my server, so I started with your demo above and tried to use Postman to test the API. When I run Postman against your [..]/helloworld/2 endpoint I get the following back: { "JSONData": "{\"name\": \"Stuart\"}", "PersonName": "Stuart", "FileName": "", "FileSize": 0 } This is my PostMan Setup: https://imgur.com/td0fDJ4 (Sorry, can't find anyway to export the Postman config for that request). The json data is picked up okay, but not the file data. I'm sending an Excel file in this case, but I've tried pure binary files like JPGs too. Can you see what I'm doing wrong with Postman? Thanks
  9. Stuart Clennett

    MarsToken.SaveToFile / LoadFromFile

    Thanks Andrea. Good luck with that 😉
  10. Stuart Clennett

    MarsToken.SaveToFile / LoadFromFile

    HI Andrea, Yes, that was it, I had AuthEndorsement set to cookie. So sorry, I thought I had checked that but clearly not. Kind regards
  11. Hi, I'm trying to save a JWT token to a file between program runs. I have a console app that runs on a short schedule and I want to prevent having to authenticate each time. I am using MarsClientToken SaveToStream / LoadFromStream to get the json token data into and out of a temp file. The contents of the temp file look fine & contain the json I would expect, i.e. the "Token" and each token property (the expired date is always +24hrs ) When the token data is loaded from the file, IsVerified = True, isExpired = false, and Authenticated = True, but I am getting 403 forbidden when I make my api calls. Logging in with username/password works fine of course. Is there something I am missing ? Thanks
  12. Stuart Clennett

    Adding a second app to a MARS Engine

    Thanks Andrea -- adding the server2.resources unit to the server.ignition.pas uses clause worked. Kind regards
  13. Hi, I've tried adding a second app to my MARS rest engine (in order to support my api's version 2) as follows: class constructor TServerEngine.CreateEngine; var MyApp, MyApp2 : TMARSApplication; begin FEngine := TMARSEngine.Create; try // Engine configuration FEngine.Parameters.LoadFromIniFile; // Application configuration MyApp := FEngine.AddApplication('IBCSApp', '/ibcs', [ 'Server.Resources.*']); // Second Application (version 2 of the API) MyApp2 := FEngine.AddApplication('IBCSApp2', '/ibcs2', [ 'server2.Resources.*']); // [....] End; And I've created a server2.Resources.pas file into which I've added a simple "/healthcheck" resource that returns the server time as a string. I've also added this line initialization TMARSResourceRegistry.Instance.RegisterResource<THealthCheck>; But when the server runs, IBCSApp2 is shown in the list of engines, but it does not contain the /healthcheck resource. I should mention that the original app (IBCSApp) also has the same resource name (/healthcheck) implemented by a different class. I guess I am missing something? Thanks Stuart
  14. That's excellent, thanks Andrea. Hope you're feeling better and had a nice christmas break. Regards Stuart
  15. Hi, Does anyone know the required steps to override the JWT params defaults for SECRET and ISSUER please? I can see they seem to need to be in the Activation.Parameters... but I'm not sure how to get them in there? Thanks in advance, Stuart
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