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ConsoleTracerAgent.pas
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// --------------------------------------------------------------------------
//
// --------------------------------------------------------------------------
unit
ConsoleTracerAgent;
// --------------------------------------------------------------------------
//
// --------------------------------------------------------------------------
interface
// --------------------------------------------------------------------------
//
// --------------------------------------------------------------------------
uses
SyncObjs,
Tracer;
// --------------------------------------------------------------------------
//
// --------------------------------------------------------------------------
type
TConsoleTracerAgent = class(TInterfacedObject, ITracerAgent)
private
Lock: TCriticalSection;
public
constructor Create;
procedure RenderTrace(TimeStamp: TDateTime; Priority: TracePriority; const Message: String);
procedure RenderWrite(const Message: String);
procedure CloseTrace;
end;
// --------------------------------------------------------------------------
//
// --------------------------------------------------------------------------
implementation
// --------------------------------------------------------------------------
//
// --------------------------------------------------------------------------
uses
SysUtils;
// --------------------------------------------------------------------------
//
// --------------------------------------------------------------------------
constructor TConsoleTracerAgent.Create;
begin
inherited Create;
Self.Lock := TCriticalSection.Create;
end;
// --------------------------------------------------------------------------
//
// --------------------------------------------------------------------------
procedure TConsoleTracerAgent.RenderTrace(TimeStamp: TDateTime; Priority: TracePriority; const Message: String);
var
Line: String;
begin
// Determine what to log out of the lock for performance reasons
if (Priority = TracePriorityInfo) then Line := FormatDateTime('yyyy-MM-dd HH":"mm":"ss.zzz', TimeStamp) + ' [I] ' + Message else if (Priority = TracePriorityWarning) then Line := FormatDateTime('yyyy-MM-dd HH":"mm":"ss.zzz', TimeStamp) + ' [W] ' + Message else if (Priority = TracePriorityError) then Line := FormatDateTime('yyyy-MM-dd HH":"mm":"ss.zzz', TimeStamp) + ' [E] ' + Message else Line := FormatDateTime('yyyy-MM-dd HH":"mm":"ss.zzz', TimeStamp) + ' [?] ' + Message;
// Tracing is wrapped around a critical section for thread-safety
Self.Lock.Acquire; try WriteLn(Line); finally Self.Lock.Release; end;
end;
// --------------------------------------------------------------------------
//
// --------------------------------------------------------------------------
procedure TConsoleTracerAgent.RenderWrite(const Message: String);
begin
// Tracing is wrapped around a critical section for thread-safety
Self.Lock.Acquire; try WriteLn(Message); finally Self.Lock.Release; end;
end;
// --------------------------------------------------------------------------
//
// --------------------------------------------------------------------------
procedure TConsoleTracerAgent.CloseTrace;
begin
Self.Lock.Free;
end;
// --------------------------------------------------------------------------
//
// --------------------------------------------------------------------------
end.