delphimvcframework/samples/middleware_analytics/WebModuleU.pas

unit WebModuleU;

interface

uses
  System.SysUtils,
  System.Classes,
  Web.HTTPApp,
  MVCFramework;

type
  TMyWebModule = class(TWebModule)
    procedure WebModuleCreate(Sender: TObject);
    procedure WebModuleDestroy(Sender: TObject);
  private
    FMVC: TMVCEngine;
  public
    { Public declarations }
  end;

var
  WebModuleClass: TComponentClass = TMyWebModule;

implementation

{$R *.dfm}


uses
  MainControllerU,
  System.IOUtils,
  MVCFramework.Commons,
  MVCFramework.Serializer.Commons,
  LoggerPro.FileAppender,
  LoggerPro,
  System.DateUtils,
  MVCFramework.Middleware.Analytics,
  MVCFramework.Middleware.StaticFiles;

var
  GLogWriter: ILogWriter = nil;
  GLock: TObject = nil;

function GetLoggerForAnalytics: ILogWriter;
var
  lLog: ILogAppender;
begin
  if GLogWriter = nil then
  begin
    TMonitor.Enter(GLock);
    try
      if GLogWriter = nil then // double check locking (https://en.wikipedia.org/wiki/Double-checked_locking)
      begin
        lLog := TLoggerProFileAppender.Create(5, 2000, AppPath + 'analytics', TPath.ChangeExtension(TLoggerProFileAppenderBase.DEFAULT_FILENAME_FORMAT, 'csv'));
        TLoggerProFileAppender(lLog).OnLogRow := procedure(const LogItem: TLogItem; out LogRow: string)
          begin
            LogRow := Format('%s;%s;%s;%s', [
              FormatDateTime('yyyy-mm-dd hh:nn:ss', LogItem.TimeStamp),
              LogItem.LogTypeAsString,
              LogItem.LogMessage,
              LogItem.LogTag]);
          end;
        GLogWriter := BuildLogWriter([lLog]);
      end;
    finally
      TMonitor.Exit(GLock);
    end;
  end;
  Result := GLogWriter;
end;

procedure TMyWebModule.WebModuleCreate(Sender: TObject);
begin
  FMVC := TMVCEngine.Create(Self,
    procedure(Config: TMVCConfig)
    begin
      // session timeout (0 means session cookie)
      Config[TMVCConfigKey.SessionTimeout] := '0';
      // default content-type
      Config[TMVCConfigKey.DefaultContentType] := TMVCConstants.DEFAULT_CONTENT_TYPE;
      // default content charset
      Config[TMVCConfigKey.DefaultContentCharset] := TMVCConstants.DEFAULT_CONTENT_CHARSET;
      // unhandled actions are permitted?
      Config[TMVCConfigKey.AllowUnhandledAction] := 'false';
      // default view file extension
      Config[TMVCConfigKey.DefaultViewFileExtension] := 'html';
      // view path
      Config[TMVCConfigKey.ViewPath] := 'templates';
      // Enable Server Signature in response
      Config[TMVCConfigKey.ExposeServerSignature] := 'false';
    end);
  FMVC
    .AddController(TMainController)
    .AddMiddleware(TMVCAnalyticsMiddleware.Create(GetAnalyticsDefaultLogger));
  FMVC.AddMiddleware(TMVCStaticFilesMiddleware.Create(
    '/static', { StaticFilesPath }
    TPath.Combine(ExtractFilePath(GetModuleName(HInstance)), 'www'), { DocumentRoot }
    'index.html' {IndexDocument - Before it was named fallbackresource}
    ));
end;

procedure TMyWebModule.WebModuleDestroy(Sender: TObject);
begin
  FMVC.Free;
end;

initialization

GLock := TObject.Create;

finalization

GLock.Free;

end.