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(*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*)
program DelphiServer;
{$APPTYPE CONSOLE}
{$D 'Copyright (c) 2012 The Apache Software Foundation'}
{$Q+} // throws exceptions on numeric overflows
uses
SysUtils,
Generics.Collections,
Thrift in '..\..\..\lib\delphi\src\Thrift.pas',
Thrift.Collections in '..\..\..\lib\delphi\src\Thrift.Collections.pas',
Thrift.Configuration in '..\..\..\lib\delphi\src\Thrift.Configuration.pas',
Thrift.Exception in '..\..\..\lib\delphi\src\Thrift.Exception.pas',
Thrift.Utils in '..\..\..\lib\delphi\src\Thrift.Utils.pas',
Thrift.Stream in '..\..\..\lib\delphi\src\Thrift.Stream.pas',
Thrift.Protocol in '..\..\..\lib\delphi\src\Thrift.Protocol.pas',
Thrift.Server in '..\..\..\lib\delphi\src\Thrift.Server.pas',
Thrift.Transport in '..\..\..\lib\delphi\src\Thrift.Transport.pas',
Thrift.WinHTTP in '..\..\..\lib\delphi\src\Thrift.WinHTTP.pas',
Shared in '..\gen-delphi\Shared.pas',
Tutorial in '..\gen-delphi\Tutorial.pas';
type
TCalculatorHandler = class( TInterfacedObject, TCalculator.Iface)
protected
FLog : TDictionary< Integer, ISharedStruct>;
// TSharedService.Iface
function getStruct(key: Integer): ISharedStruct;
// TCalculator.Iface
procedure ping();
function add(num1: Integer; num2: Integer): Integer;
function calculate(logid: Integer; const w: IWork): Integer;
procedure zip();
public
constructor Create;
destructor Destroy; override;
end;
DelphiTutorialServer = class
public
class procedure Main;
end;
//--- TCalculatorHandler ---------------------------------------------------
constructor TCalculatorHandler.Create;
begin
inherited Create;
FLog := TDictionary< Integer, ISharedStruct>.Create();
end;
destructor TCalculatorHandler.Destroy;
begin
try
FreeAndNil( FLog);
finally
inherited Destroy;
end;
end;
procedure TCalculatorHandler.ping;
begin
WriteLn( 'ping()');
end;
function TCalculatorHandler.add(num1: Integer; num2: Integer): Integer;
begin
WriteLn( Format( 'add( %d, %d)', [num1, num2]));
result := num1 + num2;
end;
function TCalculatorHandler.calculate(logid: Integer; const w: IWork): Integer;
var entry : ISharedStruct;
begin
try
WriteLn( Format('calculate( %d, [%d,%d,%d])', [logid, Ord(w.Op), w.Num1, w.Num2]));
case w.Op of
TOperation.ADD : result := w.Num1 + w.Num2;
TOperation.SUBTRACT : result := w.Num1 - w.Num2;
TOperation.MULTIPLY : result := w.Num1 * w.Num2;
TOperation.DIVIDE : result := Round( w.Num1 / w.Num2);
else
raise TInvalidOperation.Create( Ord(w.Op), 'Unknown operation');
end;
except
on e:Thrift.TException do raise; // let Thrift Exceptions pass through
on e:Exception do raise TInvalidOperation.Create( Ord(w.Op), e.Message); // repackage all other
end;
entry := TSharedStructImpl.Create;
entry.Key := logid;
entry.Value := IntToStr( result);
FLog.AddOrSetValue( logid, entry);
end;
function TCalculatorHandler.getStruct(key: Integer): ISharedStruct;
begin
WriteLn( Format( 'getStruct(%d)', [key]));
result := FLog[key];
end;
procedure TCalculatorHandler.zip;
begin
WriteLn( 'zip()');
end;
//--- DelphiTutorialServer ----------------------------------------------------------------------
class procedure DelphiTutorialServer.Main;
var handler : TCalculator.Iface;
processor : IProcessor;
transport : IServerTransport;
server : IServer;
begin
try
handler := TCalculatorHandler.Create;
processor := TCalculator.TProcessorImpl.Create( handler);
transport := TServerSocketImpl.Create( 9090);
server := TSimpleServer.Create( processor, transport);
WriteLn( 'Starting the server...');
server.Serve();
except
on e: Exception do WriteLn( e.Message);
end;
WriteLn('done.');
end;
begin
try
DelphiTutorialServer.Main;
except
on E: Exception do
Writeln(E.ClassName, ': ', E.Message);
end;
end.
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