trunk/iblocaldb/IBXUpgradeDatabaseDlg.pas

(*
 *  IBX For Lazarus (Firebird Express)
 *
 *  The contents of this file are subject to the Initial Developer's
 *  Public License Version 1.0 (the "License"); you may not use this
 *  file except in compliance with the License. You may obtain a copy
 *  of the License here:
 *
 *    http://www.firebirdsql.org/index.php?op=doc&id=idpl
 *
 *  Software distributed under the License is distributed on an "AS
 *  IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 *  implied. See the License for the specific language governing rights
 *  and limitations under the License.
 *
 *  The Initial Developer of the Original Code is Tony Whyman.
 *
 *  The Original Code is (C) 2014 Tony Whyman, MWA Software
 *  (http://www.mwasoftware.co.uk).
 *
 *  All Rights Reserved.
 *
 *  Contributor(s): ______________________________________.
 *
*)
unit IBXUpgradeDatabaseDlg;

{$mode objfpc}{$H+}

interface

uses
  Classes, SysUtils, FileUtil, Forms, Controls,  Dialogs, StdCtrls,
  ComCtrls, ExtCtrls, IBDatabase, ibxscript, IBXUpgradeConfFile;

type
  TGetDatabaseVersionNo = procedure (Sender: TObject; var VersionNo: integer) of object;

  { TUpgradeDatabaseDlg }

  TUpgradeDatabaseDlg = class(TForm)
    UpdateTransaction: TIBTransaction;
    IBXScript: TIBXScript;
    Label1: TLabel;
    Panel1: TPanel;
    ProgressBar1: TProgressBar;
    Status: TLabel;
    Timer1: TTimer;
    procedure FormShow(Sender: TObject);
    procedure HandleCompletionEvent(Sender: TObject);
    procedure IBXScriptLogProc(Sender: TObject; Msg: string);
    procedure IBXScriptProgressEvent(Sender: TObject; Reset: boolean;
      value: integer);
  private
    FOnGetDatabaseVersionNo: TGetDatabaseVersionNo;
    FOnUpgradeStepCompleted: TNotifyEvent;
    { private declarations }
    FUpgradeLog: TStrings;
    FTargetVersionNo: integer;
    FUpgradeConf: TUpgradeConfFile;
    FArchiveStub: string;
    procedure DoUpdate(Data: PtrInt);
    function CurrentDBVersionNo: integer;
  public
    { public declarations }
    SuccessfulCompletion: boolean;
    constructor Create(theOwner: TComponent); override;
    destructor Destroy; override;
    procedure Add2Log(Msg: string);
    property OnGetDatabaseVersionNo: TGetDatabaseVersionNo read FOnGetDatabaseVersionNo
             write FOnGetDatabaseVersionNo;
    property OnUpgradeStepCompleted: TNotifyEvent read FOnUpgradeStepCompleted write FOnUpgradeStepCompleted;
  end; 


var
  UpgradeDatabaseDlg: TUpgradeDatabaseDlg;

function RunUpgradeDatabase(aDatabase: TIBDatabase;
                            UpgradeConf: TUpgradeConfFile;
                            ArchiveStub: string;
                            TargetVersionNo: integer;
                            aOnGetDatabaseVersionNo: TGetDatabaseVersionNo;
                            aOnUpgradeStepCompleted: TNotifyEvent): boolean;


implementation

{$R *.lfm}

uses  IBXViewLogDig, IBXSaveDatabaseDlg;

resourcestring
  sNoUpgradeConf = 'An Upgrade Conf file must be provided';
  sUpdateMsg =       'Applying Update from %s';
  sUpdateStarted =   '%s Update Started';
  sUpdateEnded =     '%s Update Completed';
  sUpdateFailed    = 'Update Failed - %s';

function RunUpgradeDatabase(aDatabase: TIBDatabase;
  UpgradeConf: TUpgradeConfFile; ArchiveStub: string; TargetVersionNo: integer;
  aOnGetDatabaseVersionNo: TGetDatabaseVersionNo;
  aOnUpgradeStepCompleted: TNotifyEvent): boolean;
begin
  if not assigned(UpgradeConf) then
    raise Exception.Create(sNoUpgradeConf);

  with TUpgradeDatabaseDlg.Create(Application) do
  try
    FTargetVersionNo := TargetVersionNo;
    FUpgradeConf := UpgradeConf;
    FArchiveStub := ArchiveStub;
    IBXScript.Database := aDatabase;
    UpdateTransaction.DefaultDatabase := aDatabase;
    IBXScript.GetParamValue := @UpgradeConf.GetParamValue;
    OnGetDatabaseVersionNo := aOnGetDatabaseVersionNo;
    OnUpgradeStepCompleted := aOnUpgradeStepCompleted;
    Result := ShowModal = mrOK;
  finally
    Free
  end;
end;

{ TUpgradeDatabaseDlg }

procedure TUpgradeDatabaseDlg.FormShow(Sender: TObject);
begin
  ProgressBar1.Position := 0;
  Status.Caption := '';
  FUpgradeLog.Clear;
  Application.QueueAsyncCall(@DoUpdate,0);
end;

procedure TUpgradeDatabaseDlg.HandleCompletionEvent(Sender: TObject);
begin
  Timer1.Enabled := false;
  if not SuccessfulCompletion then
  begin
    ShowViewLogDlg(FUpgradeLog);
    ModalResult := mrCancel
  end
  else
    ModalResult := mrOK;
end;

procedure TUpgradeDatabaseDlg.IBXScriptLogProc(Sender: TObject; Msg: string);
begin
  Add2Log(Msg);
end;

procedure TUpgradeDatabaseDlg.IBXScriptProgressEvent(Sender: TObject;
  Reset: boolean; value: integer);
begin
  if Reset then
  begin
    with ProgressBar1 do
    begin
      Position := 0;
      Max := value;
    end;
  end;
  ProgressBar1.StepIt;
  Application.ProcessMessages;
end;

procedure TUpgradeDatabaseDlg.Add2Log(Msg: string);
begin
  FUpgradeLog.Add(Msg);
end;

procedure TUpgradeDatabaseDlg.DoUpdate(Data: PtrInt);
var UpdateAvailable: boolean;
    UpgradeInfo: TUpgradeInfo;
    DBArchive: string;
    LastVersionNo: integer;
    CurVersionNo: integer;
begin
  SuccessfulCompletion := true;
  try
    CurVersionNo := CurrentDBVersionNo;
    repeat
      if CurVersionNo >= FTargetVersionNo then break;
      LastVersionNo := CurVersionNo;
      UpdateAvailable := FUpgradeConf.GetUpgradeInfo(CurVersionNo+1,UpgradeInfo);
      if UpdateAvailable then
      begin
        if UpgradeInfo.BackupDB then
        begin
          CreateDir(ExtractFileDir(FArchiveStub));
          DBArchive := FArchiveStub + '.' + IntToStr(CurrentDBVersionNo) + '.gbk';
          with IBXScript.Database do
            SaveDatabaseToArchive(DatabaseName,Params,DBArchive);
        end;
        Add2Log(UpgradeInfo.UserMessage);
        Status.Caption := UpgradeInfo.UserMessage;
        Application.ProcessMessages;
        Add2Log(Format(sUpdateMsg,[UpgradeInfo.UpdateSQLFile]));
        Add2Log(Format(sUpdateStarted,[DateTimeToStr(Now)]));
        if not IBXScript.PerformUpdate(UpgradeInfo.UpdateSQLFile,true) then
        begin
         Add2Log(Format(sUpdateFailed,[DateTimeToStr(Now)]));
         SuccessfulCompletion := false;
         UpdateTransaction.Rollback;
         break;
        end;
        UpdateTransaction.Commit;
        Add2Log(Format(sUpdateEnded,[DateTimeToStr(Now)]));
        if assigned(FOnUpgradeStepCompleted) then
          OnUpgradeStepCompleted(self);
      end;
      CurVersionNo := CurrentDBVersionNo;
    until not UpdateAvailable or (LastVersionNo = CurVersionNo);
  except on E:Exception do
   begin
    SuccessfulCompletion := false;
    Add2Log(E.Message);
   end;
  end;
  Timer1.Enabled := true;
end;

function TUpgradeDatabaseDlg.CurrentDBVersionNo: integer;
begin
  if assigned(FOnGetDatabaseVersionNo) then
    OnGetDatabaseVersionNo(self,Result)
  else
    Result := 0;
end;


constructor TUpgradeDatabaseDlg.Create(theOwner: TComponent);
begin
  inherited Create(theOwner);
  FUpgradeLog := TStringList.Create;
end;

destructor TUpgradeDatabaseDlg.Destroy;
begin
  if assigned(FUpgradeLog) then
    FUpgradeLog.Free;
  inherited Destroy;
end;

end.

Revision:	80
Committed:	Mon Jan 1 11:31:07 2018 UTC (6 years, 10 months ago) by tony
Content type:	text/x-pascal
File size:	7122 byte(s)
Log Message:	Fixes merged into public release
#	User	Rev	Content
1	tony	37	(*
2			* IBX For Lazarus (Firebird Express)
3			*
4			* The contents of this file are subject to the Initial Developer's
5			* Public License Version 1.0 (the "License"); you may not use this
6			* file except in compliance with the License. You may obtain a copy
7			* of the License here:
8			*
9			* http://www.firebirdsql.org/index.php?op=doc&id=idpl
10			*
11			* Software distributed under the License is distributed on an "AS
12			* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
13			* implied. See the License for the specific language governing rights
14			* and limitations under the License.
15			*
16			* The Initial Developer of the Original Code is Tony Whyman.
17			*
18			* The Original Code is (C) 2014 Tony Whyman, MWA Software
19			* (http://www.mwasoftware.co.uk).
20			*
21			* All Rights Reserved.
22			*
23			* Contributor(s): ______________________________________.
24			*
25			*)
26			unit IBXUpgradeDatabaseDlg;
27
28			{$mode objfpc}{$H+}
29
30			interface
31
32			uses
33			Classes, SysUtils, FileUtil, Forms, Controls, Dialogs, StdCtrls,
34	tony	80	ComCtrls, ExtCtrls, IBDatabase, ibxscript, IBXUpgradeConfFile;
35	tony	37
36			type
37	tony	80	TGetDatabaseVersionNo = procedure (Sender: TObject; var VersionNo: integer) of object;
38
39	tony	37	{ TUpgradeDatabaseDlg }
40
41			TUpgradeDatabaseDlg = class(TForm)
42			UpdateTransaction: TIBTransaction;
43			IBXScript: TIBXScript;
44			Label1: TLabel;
45			Panel1: TPanel;
46			ProgressBar1: TProgressBar;
47			Status: TLabel;
48			Timer1: TTimer;
49			procedure FormShow(Sender: TObject);
50			procedure HandleCompletionEvent(Sender: TObject);
51			procedure IBXScriptLogProc(Sender: TObject; Msg: string);
52			procedure IBXScriptProgressEvent(Sender: TObject; Reset: boolean;
53			value: integer);
54			private
55	tony	80	FOnGetDatabaseVersionNo: TGetDatabaseVersionNo;
56			FOnUpgradeStepCompleted: TNotifyEvent;
57	tony	37	{ private declarations }
58			FUpgradeLog: TStrings;
59	tony	80	FTargetVersionNo: integer;
60			FUpgradeConf: TUpgradeConfFile;
61			FArchiveStub: string;
62	tony	37	procedure DoUpdate(Data: PtrInt);
63	tony	80	function CurrentDBVersionNo: integer;
64	tony	37	public
65			{ public declarations }
66			SuccessfulCompletion: boolean;
67			constructor Create(theOwner: TComponent); override;
68			destructor Destroy; override;
69			procedure Add2Log(Msg: string);
70	tony	80	property OnGetDatabaseVersionNo: TGetDatabaseVersionNo read FOnGetDatabaseVersionNo
71			write FOnGetDatabaseVersionNo;
72			property OnUpgradeStepCompleted: TNotifyEvent read FOnUpgradeStepCompleted write FOnUpgradeStepCompleted;
73	tony	37	end;
74
75
76			var
77			UpgradeDatabaseDlg: TUpgradeDatabaseDlg;
78
79	tony	80	function RunUpgradeDatabase(aDatabase: TIBDatabase;
80			UpgradeConf: TUpgradeConfFile;
81			ArchiveStub: string;
82			TargetVersionNo: integer;
83			aOnGetDatabaseVersionNo: TGetDatabaseVersionNo;
84			aOnUpgradeStepCompleted: TNotifyEvent): boolean;
85	tony	37
86	tony	80
87	tony	37	implementation
88
89			{$R *.lfm}
90
91	tony	80	uses IBXViewLogDig, IBXSaveDatabaseDlg;
92	tony	37
93	tony	80	resourcestring
94			sNoUpgradeConf = 'An Upgrade Conf file must be provided';
95			sUpdateMsg = 'Applying Update from %s';
96			sUpdateStarted = '%s Update Started';
97			sUpdateEnded = '%s Update Completed';
98			sUpdateFailed = 'Update Failed - %s';
99
100			function RunUpgradeDatabase(aDatabase: TIBDatabase;
101			UpgradeConf: TUpgradeConfFile; ArchiveStub: string; TargetVersionNo: integer;
102			aOnGetDatabaseVersionNo: TGetDatabaseVersionNo;
103			aOnUpgradeStepCompleted: TNotifyEvent): boolean;
104			begin
105			if not assigned(UpgradeConf) then
106			raise Exception.Create(sNoUpgradeConf);
107
108			with TUpgradeDatabaseDlg.Create(Application) do
109			try
110			FTargetVersionNo := TargetVersionNo;
111			FUpgradeConf := UpgradeConf;
112			FArchiveStub := ArchiveStub;
113			IBXScript.Database := aDatabase;
114			UpdateTransaction.DefaultDatabase := aDatabase;
115			IBXScript.GetParamValue := @UpgradeConf.GetParamValue;
116			OnGetDatabaseVersionNo := aOnGetDatabaseVersionNo;
117			OnUpgradeStepCompleted := aOnUpgradeStepCompleted;
118			Result := ShowModal = mrOK;
119			finally
120			Free
121			end;
122			end;
123
124	tony	37	{ TUpgradeDatabaseDlg }
125
126			procedure TUpgradeDatabaseDlg.FormShow(Sender: TObject);
127			begin
128			ProgressBar1.Position := 0;
129			Status.Caption := '';
130			FUpgradeLog.Clear;
131			Application.QueueAsyncCall(@DoUpdate,0);
132			end;
133
134			procedure TUpgradeDatabaseDlg.HandleCompletionEvent(Sender: TObject);
135			begin
136			Timer1.Enabled := false;
137			if not SuccessfulCompletion then
138			begin
139			ShowViewLogDlg(FUpgradeLog);
140			ModalResult := mrCancel
141			end
142			else
143			ModalResult := mrOK;
144			end;
145
146			procedure TUpgradeDatabaseDlg.IBXScriptLogProc(Sender: TObject; Msg: string);
147			begin
148			Add2Log(Msg);
149			end;
150
151			procedure TUpgradeDatabaseDlg.IBXScriptProgressEvent(Sender: TObject;
152			Reset: boolean; value: integer);
153			begin
154			if Reset then
155			begin
156			with ProgressBar1 do
157			begin
158			Position := 0;
159			Max := value;
160			end;
161			end;
162			ProgressBar1.StepIt;
163			Application.ProcessMessages;
164			end;
165
166			procedure TUpgradeDatabaseDlg.Add2Log(Msg: string);
167			begin
168			FUpgradeLog.Add(Msg);
169			end;
170
171			procedure TUpgradeDatabaseDlg.DoUpdate(Data: PtrInt);
172	tony	80	var UpdateAvailable: boolean;
173			UpgradeInfo: TUpgradeInfo;
174			DBArchive: string;
175			LastVersionNo: integer;
176			CurVersionNo: integer;
177	tony	37	begin
178			SuccessfulCompletion := true;
179			try
180	tony	80	CurVersionNo := CurrentDBVersionNo;
181			repeat
182			if CurVersionNo >= FTargetVersionNo then break;
183			LastVersionNo := CurVersionNo;
184			UpdateAvailable := FUpgradeConf.GetUpgradeInfo(CurVersionNo+1,UpgradeInfo);
185			if UpdateAvailable then
186			begin
187			if UpgradeInfo.BackupDB then
188			begin
189			CreateDir(ExtractFileDir(FArchiveStub));
190			DBArchive := FArchiveStub + '.' + IntToStr(CurrentDBVersionNo) + '.gbk';
191			with IBXScript.Database do
192			SaveDatabaseToArchive(DatabaseName,Params,DBArchive);
193			end;
194			Add2Log(UpgradeInfo.UserMessage);
195			Status.Caption := UpgradeInfo.UserMessage;
196			Application.ProcessMessages;
197			Add2Log(Format(sUpdateMsg,[UpgradeInfo.UpdateSQLFile]));
198			Add2Log(Format(sUpdateStarted,[DateTimeToStr(Now)]));
199			if not IBXScript.PerformUpdate(UpgradeInfo.UpdateSQLFile,true) then
200			begin
201			Add2Log(Format(sUpdateFailed,[DateTimeToStr(Now)]));
202			SuccessfulCompletion := false;
203			UpdateTransaction.Rollback;
204			break;
205			end;
206			UpdateTransaction.Commit;
207			Add2Log(Format(sUpdateEnded,[DateTimeToStr(Now)]));
208			if assigned(FOnUpgradeStepCompleted) then
209			OnUpgradeStepCompleted(self);
210			end;
211			CurVersionNo := CurrentDBVersionNo;
212			until not UpdateAvailable or (LastVersionNo = CurVersionNo);
213	tony	37	except on E:Exception do
214			begin
215			SuccessfulCompletion := false;
216			Add2Log(E.Message);
217			end;
218			end;
219			Timer1.Enabled := true;
220			end;
221
222	tony	80	function TUpgradeDatabaseDlg.CurrentDBVersionNo: integer;
223			begin
224			if assigned(FOnGetDatabaseVersionNo) then
225			OnGetDatabaseVersionNo(self,Result)
226			else
227			Result := 0;
228			end;
229	tony	37
230	tony	80
231	tony	37	constructor TUpgradeDatabaseDlg.Create(theOwner: TComponent);
232			begin
233			inherited Create(theOwner);
234			FUpgradeLog := TStringList.Create;
235			end;
236
237			destructor TUpgradeDatabaseDlg.Destroy;
238			begin
239			if assigned(FUpgradeLog) then
240			FUpgradeLog.Free;
241			inherited Destroy;
242			end;
243
244			end.
245