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unit AdminReplication;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, ExtCtrls, InstanceSections, ComCtrls, ImgList,
AdditionalClasses, myx_admin_public_interface, myx_public_interface,
ApplicationDataModule, MySQLConnection, AuxFuncs,
Options, MyxError, TntExtCtrls, TntComCtrls, TntStdCtrls, gnugettext;
type
TAdminReplicationForm = class(TInstanceSectionForm)
ReplicationPnl: TTntPanel;
ReplicationPageControl: TTntPageControl;
OverviewTabSheet: TTabSheet;
Panel5: TTntPanel;
OverviewBevel: TTntBevel;
Label8: TTntLabel;
Image3: TTntImage;
Panel3: TTntPanel;
BottomBtnPnl: TTntPanel;
Button1: TTntButton;
LogImageList: TImageList;
ServerInformationTabSheet: TTabSheet;
Panel1: TTntPanel;
InformationBevel: TTntBevel;
Label1: TTntLabel;
Image1: TTntImage;
Panel2: TTntPanel;
ServerInformationListView: TTntListView;
ReplOverviewPnl: TTntPanel;
AddInstanceToMonitoringListBtn: TTntButton;
RefreshBtn: TTntButton;
RemoveInstancefromMonitoringListBtn: TTntButton;
procedure FormCreate(Sender: TObject);
procedure FormDestroy(Sender: TObject);
procedure ReplicationPnlResize(Sender: TObject);
procedure GenerateReplicationOverview;
procedure ReplicationPageControlChange(Sender: TObject);
procedure RefreshHostList;
procedure ConnectionLost(var Message: TMessage); message WM_CONNECTION_LOST;
procedure ConnectionEstablished(var Message: TMessage); message WM_CONNECTION_ESTABLISHED;
procedure ServerInformationListViewSelectItem(Sender: TObject;
Item: TListItem; Selected: Boolean);
procedure AddInstanceToMonitoringListBtnClick(Sender: TObject);
procedure RemoveInstancefromMonitoringListBtnClick(Sender: TObject);
procedure CheckUserReplHostBtns;
procedure RefreshBtnClick(Sender: TObject);
private
FReplicationHosts: TMYX_REPL_HOSTS;
FUserReplicationHosts: TMYX_USER_REPL_HOSTS;
FUserReplicationHostsFilename: WideString;
end;
var
AdminReplicationForm: TAdminReplicationForm;
//----------------------------------------------------------------------------------------------------------------------
implementation
{$R *.dfm}
//----------------------------------------------------------------------------------------------------------------------
procedure TAdminReplicationForm.FormCreate(Sender: TObject);
begin
InitForm(self);
DockedPanel:=ReplicationPnl;
FReplicationHosts:=nil;
FUserReplicationHosts:=nil;
FUserReplicationHostsFilename := MYXCommonOptions.UserDataDir + 'mysqlx_replication_hosts_' + MySQLConn.UserConnection.hostname +
'.xml';
if MySQLConn.Connected then
RefreshHostList
else
DisableEnablePages(ReplicationPageControl, False);
end;
//----------------------------------------------------------------------------------------------------------------------
procedure TAdminReplicationForm.FormDestroy(Sender: TObject);
begin
FReplicationHosts.Free;
FUserReplicationHosts.Free;
end;
//----------------------------------------------------------------------------------------------------------------------
procedure TAdminReplicationForm.ReplicationPnlResize(Sender: TObject);
var
InitSheetWidth,
InitSheetHeight: integer;
begin
InitSheetWidth:=563;
InitSheetHeight:=451;
//Adjust Page Control
ReplicationPageControl.Width:=ReplicationPnl.Width-591+571;
ReplicationPageControl.Height:=ReplicationPnl.Height-501+479;
//Overview Tab Sheet
OverviewBevel.Width:=OverviewTabSheet.Width-InitSheetWidth+535;
ReplOverviewPnl.Width:=OverviewTabSheet.Width-InitSheetWidth+535;
ReplOverviewPnl.Height:=OverviewTabSheet.Height-InitSheetHeight+353;
//Information Tab Sheet
InformationBevel.Width:=ServerInformationTabSheet.Width-InitSheetWidth+535;
ServerInformationListView.Width:=OverviewTabSheet.Width-InitSheetWidth+535;
ServerInformationListView.Height:=OverviewTabSheet.Height-InitSheetHeight+353;
end;
//----------------------------------------------------------------------------------------------------------------------
procedure TAdminReplicationForm.ReplicationPageControlChange(Sender: TObject);
begin
ReplicationPnlResize(self);
end;
//----------------------------------------------------------------------------------------------------------------------
procedure TAdminReplicationForm.GenerateReplicationOverview;
var
theReplModel: TReplicationModel;
LizReplNode,
AnnaReplNode,
BettyReplNode,
GraceReplNode: TReplicationNode;
begin
theReplModel:=TReplicationModel.Create(ReplOverviewPnl);
theReplModel.Parent:=ReplOverviewPnl;
theReplModel.Align:=alClient;
LizReplNode:=theReplModel.AddNode('Liz', rsRunning, 300, 40);
AnnaReplNode:=theReplModel.AddNode('Anna', rsRunning, 180, 140);
theReplModel.LinkNodes(LizReplNode, AnnaReplNode);
BettyReplNode:=theReplModel.AddNode('Betty', rsRunning, 300, 160);
theReplModel.LinkNodes(LizReplNode, BettyReplNode);
GraceReplNode:=theReplModel.AddNode('Grace', rsRunning, 420, 140);
theReplModel.LinkNodes(LizReplNode, GraceReplNode);
end;
//----------------------------------------------------------------------------------------------------------------------
procedure TAdminReplicationForm.RefreshHostList;
var
PUserHosts: PMYX_USER_REPL_HOSTS;
PReplHosts: PMYX_REPL_HOSTS;
error: MYX_ADMIN_LIB_ERROR;
I: integer;
ListItem: TListItem;
begin
ServerInformationListView.Items.Clear;
FReplicationHosts.Free;
if(FUserReplicationHosts=nil)then
if(FileExists(FUserReplicationHostsFilename))then
begin
PUserHosts:=myx_read_repl_user_hosts(FUserReplicationHostsFilename, @error);
if(PUserHosts<>nil)then
begin
try
FUserReplicationHosts:=TMYX_USER_REPL_HOSTS.Create(PUserHosts);
finally
if(PUserHosts<>nil)then
myx_free_repl_user_hosts(PUserHosts);
end;
end
else
FUserReplicationHosts:=TMYX_USER_REPL_HOSTS.Create;
end
else
begin
FUserReplicationHosts:=TMYX_USER_REPL_HOSTS.Create;
end;
if(FUserReplicationHosts<>nil)then
begin
PReplHosts:=myx_show_repl_hosts_status(MySQLConn.MySQL,
FUserReplicationHosts.get_record_pointer, @error);
if(error<>MYX_ADMIN_NO_ERROR)then
raise EMyxSQLError.Create(_('Error while fetching the replication information.'),
myx_mysql_errno(MySQLConn.MySQL),
myx_mysql_error(MySQLConn.MySQL));
if(PReplHosts<>nil)then
begin
try
FReplicationHosts:=TMYX_REPL_HOSTS.create(PReplHosts);
for I:=0 to FReplicationHosts.hosts.Count-1 do
begin
ListItem:=AddListViewItem(ServerInformationListView, nil,
FReplicationHosts.hosts[I].host,
Ord(FReplicationHosts.hosts[I].status),
FReplicationHosts.hosts[I]);
if(FReplicationHosts.hosts[I].server_id<>0)then
ListItem.SubItems.Add(IntToStr(FReplicationHosts.hosts[I].server_id))
else
ListItem.SubItems.Add('');
if(FReplicationHosts.hosts[I].port<>0)then
ListItem.SubItems.Add(IntToStr(FReplicationHosts.hosts[I].port))
else
ListItem.SubItems.Add('');
if(FReplicationHosts.hosts[I].is_master=1)then
ListItem.SubItems.Add('MASTER')
else
ListItem.SubItems.Add('SLAVE');
case FReplicationHosts.hosts[I].status of
MYX_RHS_AVAILABLE:
ListItem.SubItems.Add(_('Available'));
MYX_RHS_NEW_HOST:
ListItem.SubItems.Add(_('New Instance'));
else
ListItem.SubItems.Add(_('Not Available'));
end;
if(FReplicationHosts.hosts[I].is_master=1)then
begin
ListItem.SubItems.Add(FReplicationHosts.hosts[I].binlog_file);
ListItem.SubItems.Add(FReplicationHosts.hosts[I].binlog_pos);
end;
end;
finally
myx_free_repl_hosts_status(PReplHosts);
end;
end;
end;
end;
//----------------------------------------------------------------------------------------------------------------------
procedure TAdminReplicationForm.ConnectionLost(var Message: TMessage);
begin
DisableEnablePages(ReplicationPageControl, False);
end;
//----------------------------------------------------------------------------------------------------------------------
procedure TAdminReplicationForm.ConnectionEstablished(var Message: TMessage);
begin
DisableEnablePages(ReplicationPageControl, True);
RefreshHostList;
end;
//----------------------------------------------------------------------------------------------------------------------
procedure TAdminReplicationForm.CheckUserReplHostBtns;
begin
AddInstanceToMonitoringListBtn.Enabled:=False;
RemoveInstancefromMonitoringListBtn.Enabled:=False;
if(ServerInformationListView.Selected<>nil)then
if(ServerInformationListView.Selected.Data<>nil)then
begin
if(TMYX_REPL_HOST(ServerInformationListView.Selected.Data).status=MYX_RHS_NEW_HOST)then
AddInstanceToMonitoringListBtn.Enabled:=True
else
RemoveInstancefromMonitoringListBtn.Enabled:=True;
end;
end;
//----------------------------------------------------------------------------------------------------------------------
procedure TAdminReplicationForm.ServerInformationListViewSelectItem(Sender: TObject; Item: TListItem; Selected: Boolean);
begin
CheckUserReplHostBtns;
end;
//----------------------------------------------------------------------------------------------------------------------
procedure TAdminReplicationForm.AddInstanceToMonitoringListBtnClick(Sender: TObject);
var
UserReplHost: TMYX_USER_REPL_HOST;
ReplHost: TMYX_REPL_HOST;
begin
if(ServerInformationListView.Selected<>nil)then
if(ServerInformationListView.Selected.Data<>nil)then
begin
ReplHost:=TMYX_REPL_HOST(ServerInformationListView.Selected.Data);
UserReplHost:=TMYX_USER_REPL_HOST.create(ReplHost.host);
FUserReplicationHosts.hosts.Add(UserReplHost);
ReplHost.status:=MYX_RHS_AVAILABLE;
ServerInformationListView.Selected.ImageIndex:=Ord(ReplHost.status);
CheckUserReplHostBtns;
if(FUserReplicationHosts<>nil)then
myx_save_repl_user_hosts(FUserReplicationHosts.get_record_pointer,
FUserReplicationHostsFilename);
end;
end;
//----------------------------------------------------------------------------------------------------------------------
procedure TAdminReplicationForm.RemoveInstancefromMonitoringListBtnClick(Sender: TObject);
var
I: integer;
ReplHost: TMYX_REPL_HOST;
begin
if(ServerInformationListView.Selected<>nil)then
if(ServerInformationListView.Selected.Data<>nil)then
begin
ReplHost:=TMYX_REPL_HOST(ServerInformationListView.Selected.Data);
for I:=0 to FUserReplicationHosts.hosts.Count-1 do
if(CompareText(FUserReplicationHosts.hosts[I].name, ReplHost.host)=0)then
begin
FUserReplicationHosts.hosts.Delete(I);
ReplHost.status:=MYX_RHS_NEW_HOST;
ServerInformationListView.Selected.ImageIndex:=Ord(ReplHost.status);
break;
end;
CheckUserReplHostBtns;
if(FUserReplicationHosts<>nil)then
myx_save_repl_user_hosts(FUserReplicationHosts.get_record_pointer,
FUserReplicationHostsFilename);
end;
end;
//----------------------------------------------------------------------------------------------------------------------
procedure TAdminReplicationForm.RefreshBtnClick(Sender: TObject);
begin
RefreshHostList;
CheckUserReplHostBtns;
end;
//----------------------------------------------------------------------------------------------------------------------
end.
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