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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.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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