--- loncom/interface/domainprefs.pm 2011/08/09 00:54:43 1.149 +++ loncom/interface/domainprefs.pm 2011/08/09 01:35:18 1.150 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # Handler to set domain-wide configuration settings # -# $Id: domainprefs.pm,v 1.149 2011/08/09 00:54:43 raeburn Exp $ +# $Id: domainprefs.pm,v 1.150 2011/08/09 01:35:18 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -197,18 +197,22 @@ sub handler { if ( exists($env{'form.phase'}) ) { $phase = $env{'form.phase'}; } + my %servers = &Apache::lonnet::internet_dom_servers($dom); my %domconfig = &Apache::lonnet::get_dom('configuration',['login','rolecolors', 'quotas','autoenroll','autoupdate','autocreate', 'directorysrch','usercreation','usermodification', 'contacts','defaults','scantron','coursecategories', 'serverstatuses','requestcourses','helpsettings', - 'coursedefaults','usersessions'],$dom); + 'coursedefaults','usersessions','loadbalancing'],$dom); my @prefs_order = ('rolecolors','login','defaults','quotas','autoenroll', 'autoupdate','autocreate','directorysrch','contacts', 'usercreation','usermodification','scantron', 'requestcourses','coursecategories','serverstatuses','helpsettings', 'coursedefaults','usersessions'); + if (keys(%servers) > 1) { + push(@prefs_order,'loadbalancing'); + } my %prefs = ( 'rolecolors' => { text => 'Default color schemes', @@ -361,8 +365,17 @@ sub handler { {col1 => "Hosting domain's own users elsewhere", col2 => 'Rules'}], }, + 'loadbalancing' => + {text => 'Dedicated Load Balancer', + help => 'Domain_Configuration_Load_Balancing', + header => [{col1 => 'Server', + col2 => 'Default destinations', + col3 => 'User affliation', + col4 => 'Overrides'}, + ], + }, ); - my %servers = &Apache::lonnet::internet_dom_servers($dom); + my $js; if (keys(%servers) > 1) { $prefs{'login'} = { text => 'Log-in page options', help => 'Domain_Configuration_Login_Page', @@ -371,6 +384,10 @@ sub handler { {col1 => 'Log-in Page Items', col2 => ''}], }; + my ($othertitle,$usertypes,$types) = + &Apache::loncommon::sorted_inst_types($dom); + + $js = &lonbalance_targets_js($dom,$types,\%servers); } my @roles = ('student','coordinator','author','admin'); my @actions = &Apache::loncommon::get_env_multiple('form.actions'); @@ -381,7 +398,7 @@ sub handler { if ($phase eq 'process') { &Apache::lonconfigsettings::make_changes($r,$dom,$phase,$context,\@prefs_order,\%prefs,\%domconfig,$confname,\@roles); } elsif ($phase eq 'display') { - &Apache::lonconfigsettings::display_settings($r,$dom,$phase,$context,\@prefs_order,\%prefs,\%domconfig,$confname); + &Apache::lonconfigsettings::display_settings($r,$dom,$phase,$context,\@prefs_order,\%prefs,\%domconfig,$confname,$js); } else { if (keys(%domconfig) == 0) { my $primarylibserv = &Apache::lonnet::domain($dom,'primary'); @@ -465,6 +482,8 @@ sub process_changes { $output = &modify_coursedefaults($dom,%domconfig); } elsif ($action eq 'usersessions') { $output = &modify_usersessions($dom,%domconfig); + } elsif ($action eq 'loadbalancing') { + $output = &modify_loadbalancing($dom,%domconfig); } return $output; } @@ -661,13 +680,22 @@ sub print_config_box { } $output .= ''; if ($item->{'header'}->[0]->{'col3'}) { - $output .= ''. - &mt($item->{'header'}->[0]->{'col3'}); + if (defined($item->{'header'}->[0]->{'col4'})) { + $output .= ''. + &mt($item->{'header'}->[0]->{'col3'}); + } else { + $output .= ''. + &mt($item->{'header'}->[0]->{'col3'}); + } if ($action eq 'serverstatuses') { $output .= '
('.&mt('IP1,IP2 etc.').')'; } $output .= ''; } + if ($item->{'header'}->[0]->{'col4'}) { + $output .= ''. + &mt($item->{'header'}->[0]->{'col4'}); + } $output .= ''; $rowtotal ++; if ($action eq 'login') { @@ -691,6 +719,8 @@ sub print_config_box { $output .= &print_serverstatuses($dom,$settings,\$rowtotal); } elsif ($action eq 'helpsettings') { $output .= &print_helpsettings('top',$dom,$confname,$settings,\$rowtotal); + } elsif ($action eq 'loadbalancing') { + $output .= &print_loadbalancing($dom,$settings,\$rowtotal); } } $output .= ' @@ -2315,12 +2345,12 @@ sub print_usersessions { $datatable .= &spares_row(\%servers,\%spareid,\%uniques,$rowtotal); } else { $datatable .= ''. - &mt('Nothing to set here, as the cluster to which this domain belongs only contains this server.'); + &mt('Nothing to set here, as the cluster to which this domain belongs only contains one server.'); } } else { if (keys(%by_location) == 0) { $datatable .= ''. - &mt('Nothing to set here, as the cluster to which this domain belongs only contains this institution.'); + &mt('Nothing to set here, as the cluster to which this domain belongs only contains one institution.'); } else { my %lt = &usersession_titles(); my $numinrow = 5; @@ -2538,13 +2568,18 @@ sub current_offloads_to { $spareid{$lonhost}{'primary'} = $Apache::lonnet::spareid{'primary'}; $spareid{$lonhost}{'default'} = $Apache::lonnet::spareid{'default'}; } else { - my %requested; - $requested{'spareid'} = 'HASH'; - my %returnhash = &Apache::lonnet::get_remote_globals($lonhost,\%requested); - my $spareshash = $returnhash{'spareid'}; - if (ref($spareshash) eq 'HASH') { - $spareid{$lonhost}{'primary'} = $spareshash->{'primary'}; - $spareid{$lonhost}{'default'} = $spareshash->{'default'}; + my %what = ( + spareid => 1, + ); + my ($result,$returnhash) = + &Apache::lonnet::get_remote_globals($lonhost,\%what); + if ($result eq 'ok') { + if (ref($returnhash) eq 'HASH') { + if (ref($returnhash->{'spareid'}) eq 'HASH') { + $spareid{$lonhost}{'primary'} = $returnhash->{'spareid'}->{'primary'}; + $spareid{$lonhost}{'default'} = $returnhash->{'spareid'}->{'default'}; + } + } } } } @@ -2585,8 +2620,17 @@ sub spares_row { $spareid->{$server}{$type}[$i]. ''; } - $current{$type} .= ''; + my $rem = @spares%($numinrow); + my $colsleft = $numinrow - $rem; + if ($colsleft > 1 ) { + $current{$type} .= ''. + ' '; + } elsif ($colsleft == 1) { + $current{$type} .= ' '; + } } + $current{$type} .= ''; } if ($current{$type} eq '') { $current{$type} = &mt('None specified'); @@ -2632,6 +2676,243 @@ sub newspare_select { return $output; } +sub print_loadbalancing { + my ($dom,$settings,$rowtotal) = @_; + my $primary_id = &Apache::lonnet::domain($dom,'primary'); + my $intdom = &Apache::lonnet::internet_dom($primary_id); + my $numinrow = 1; + my $datatable; + my %servers = &Apache::lonnet::internet_dom_servers($dom); + my ($currbalancer,$currtargets,$currrules); + if (keys(%servers) > 1) { + if (ref($settings) eq 'HASH') { + $currbalancer = $settings->{'lonhost'}; + $currtargets = $settings->{'targets'}; + $currrules = $settings->{'rules'}; + } else { + ($currbalancer,$currtargets) = + &Apache::lonnet::get_lonbalancer_config(\%servers); + } + } else { + return; + } + my ($othertitle,$usertypes,$types) = + &Apache::loncommon::sorted_inst_types($dom); + my $rownum = 6; + if (ref($types) eq 'ARRAY') { + $rownum += scalar(@{$types}); + } + my $css_class = 'class="LC_odd_row"'; + my $targets_div_style = 'display: none'; + my $disabled_div_style = 'display: block'; + my $homedom_div_style = 'display: none'; + $datatable = ''. + ''. + '

'. + '
'.&mt('No dedicated Load Balancer').'
'."\n". + '
'.&mt('Offloads to:').'
'; + my ($numspares,@spares) = &count_servers($currbalancer,%servers); + my @sparestypes = ('primary','default'); + my %typetitles = &sparestype_titles(); + foreach my $sparetype (@sparestypes) { + my $targettable; + for (my $i=0; $i<$numspares; $i++) { + my $checked; + if (ref($currtargets) eq 'HASH') { + if (ref($currtargets->{$sparetype}) eq 'ARRAY') { + if (grep(/^\Q$spares[$i]\E$/,@{$currtargets->{$sparetype}})) { + $checked = ' checked="checked"'; + } + } + } + my $chkboxval; + if (($currbalancer ne '') && (grep((/^\Q$currbalancer\E$/,keys(%servers))))) { + $chkboxval = $spares[$i]; + } + $targettable .= ''; + my $rem = $i%($numinrow); + if ($rem == 0) { + if ($i > 0) { + $targettable .= ''; + } + $targettable .= ''; + } + } + if ($targettable ne '') { + my $rem = $numspares%($numinrow); + my $colsleft = $numinrow - $rem; + if ($colsleft > 1 ) { + $targettable .= ''. + ' '; + } elsif ($colsleft == 1) { + $targettable .= ' '; + } + $datatable .= ''.$typetitles{$sparetype}.'
'. + ''.$targettable.'

'; + } + } + $datatable .= '
'. + &loadbalancing_rules($dom,$intdom,$currrules,$othertitle, + $usertypes,$types,\%servers,$currbalancer, + $targets_div_style,$homedom_div_style); + $$rowtotal += $rownum; + return $datatable; +} + +sub loadbalancing_rules { + my ($dom,$intdom,$currrules,$othertitle,$usertypes,$types,$servers, + $currbalancer,$targets_div_style,$homedom_div_style) = @_; + my $output; + my ($alltypes,$othertypes,$titles) = + &loadbalancing_titles($dom,$intdom,$usertypes,$types); + if ((ref($alltypes) eq 'ARRAY') && (ref($titles) eq 'HASH')) { + foreach my $type (@{$alltypes}) { + my $current; + if (ref($currrules) eq 'HASH') { + $current = $currrules->{$type}; + } + if (($type eq '_LC_external') || ($type eq '_LC_internetdom')) { + if ($dom ne &Apache::lonnet::host_domain($currbalancer)) { + $current = ''; + } + } + $output .= &loadbalance_rule_row($type,$titles->{$type},$current, + $servers,$currbalancer,$dom, + $targets_div_style,$homedom_div_style); + } + } + return $output; +} + +sub loadbalancing_titles { + my ($dom,$intdom,$usertypes,$types) = @_; + my %othertypes = ( + '_LC_adv' => &mt('Advanced users from [_1]',$dom), + '_LC_author' => &mt('Users from [_1] with author role',$dom), + '_LC_internetdom' => &mt('Users not from [_1], but from [_2]',$dom,$intdom), + '_LC_external' => &mt('Users not from [_1]',$intdom), + ); + my @alltypes = ('_LC_adv','_LC_author','_LC_internetdom','_LC_external'); + if (ref($types) eq 'ARRAY') { + unshift(@alltypes,@{$types},'default'); + } + my %titles; + foreach my $type (@alltypes) { + if ($type =~ /^_LC_/) { + $titles{$type} = $othertypes{$type}; + } elsif ($type eq 'default') { + $titles{$type} = &mt('All users from [_1]',$dom); + if (ref($types) eq 'ARRAY') { + if (@{$types} > 0) { + $titles{$type} = &mt('Other users from [_1]',$dom); + } + } + } elsif (ref($usertypes) eq 'HASH') { + $titles{$type} = $usertypes->{$type}; + } + } + return (\@alltypes,\%othertypes,\%titles); +} + +sub loadbalance_rule_row { + my ($type,$title,$current,$servers,$currbalancer,$dom,$targets_div_style, + $homedom_div_style) = @_; + my @rulenames = ('default','homeserver'); + my %ruletitles = &offloadtype_text(); + if ($type eq '_LC_external') { + push(@rulenames,'externalbalancer'); + } else { + push(@rulenames,'specific'); + } + my $style = $targets_div_style; + if (($type eq '_LC_external') || ($type eq '_LC_internetdom')) { + $style = $homedom_div_style; + } + my $output = + '
'.$title.'
'."\n". + '
'."\n"; + for (my $i=0; $i<@rulenames; $i++) { + my $rule = $rulenames[$i]; + my ($checked,$extra); + if ($rulenames[$i] eq 'default') { + $rule = ''; + } + if ($rulenames[$i] eq 'specific') { + if (ref($servers) eq 'HASH') { + my $default; + if (($current ne '') && (exists($servers->{$current}))) { + $checked = ' checked="checked"'; + } + unless ($checked) { + $default = ' selected="selected"'; + } + $extra = ': '; + } + } elsif ($rule eq $current) { + $checked = ' checked="checked"'; + } + $output .= ''.$extra.'
'."\n"; + } + $output .= '
'."\n"; + return $output; +} + +sub offloadtype_text { + my %ruletitles = &Apache::lonlocal::texthash ( + 'default' => 'Offloads to default destinations', + 'homeserver' => "Offloads to user's home server", + 'externalbalancer' => "Offloads to Load Balancer in user's domain", + 'specific' => 'Offloads to specific server', + ); + return %ruletitles; +} + +sub sparestype_titles { + my %typestitles = &Apache::lonlocal::texthash ( + 'primary' => 'primary', + 'default' => 'default', + ); + return %typestitles; +} + sub contact_titles { my %titles = &Apache::lonlocal::texthash ( 'supportemail' => 'Support E-mail address', @@ -7214,6 +7495,200 @@ sub modify_usersessions { return $resulttext; } +sub modify_loadbalancing { + my ($dom,%domconfig) = @_; + my $primary_id = &Apache::lonnet::domain($dom,'primary'); + my $intdom = &Apache::lonnet::internet_dom($primary_id); + my ($othertitle,$usertypes,$types) = + &Apache::loncommon::sorted_inst_types($dom); + my %servers = &Apache::lonnet::internet_dom_servers($dom); + my @sparestypes = ('primary','default'); + my %typetitles = &sparestype_titles(); + my $resulttext; + if (keys(%servers) > 1) { + my ($currbalancer,$currtargets,$currrules); + if (ref($domconfig{'loadbalancing'}) eq 'HASH') { + $currbalancer = $domconfig{'loadbalancing'}{'lonhost'}; + $currtargets = $domconfig{'loadbalancing'}{'targets'}; + $currrules = $domconfig{'loadbalancing'}{'rules'}; + } else { + ($currbalancer,$currtargets) = + &Apache::lonnet::get_lonbalancer_config(\%servers); + } + my ($saveloadbalancing,%defaultshash,%changes); + my ($alltypes,$othertypes,$titles) = + &loadbalancing_titles($dom,$intdom,$usertypes,$types); + my %ruletitles = &offloadtype_text(); + my $balancer = $env{'form.loadbalancing_lonhost'}; + if (!$servers{$balancer}) { + undef($balancer); + } + if ($currbalancer ne $balancer) { + $changes{'lonhost'} = 1; + } + $defaultshash{'loadbalancing'}{'lonhost'} = $balancer; + if ($balancer ne '') { + unless (ref($domconfig{'loadbalancing'}) eq 'HASH') { + $saveloadbalancing = 1; + } + foreach my $sparetype (@sparestypes) { + my @targets = &Apache::loncommon::get_env_multiple('form.loadbalancing_target_'.$sparetype); + foreach my $target (@targets) { + my @offloadto; + if (($servers{$target}) && ($target ne $balancer)) { + if ($sparetype eq 'default') { + if (ref($defaultshash{'loadbalancing'}{'targets'}{'primary'}) eq 'ARRAY') { + next if (grep(/^\Q$target\E$/,@{$defaultshash{'loadbalancing'}{'targets'}{'primary'}})); + } + } + unless(grep(/^\Q$target\E$/,@offloadto)) { + push(@offloadto,$target); + } + } + $defaultshash{'loadbalancing'}{'targets'}{$sparetype} = \@offloadto; + } + } + } else { + foreach my $sparetype (@sparestypes) { + $defaultshash{'loadbalancing'}{'targets'}{$sparetype} = []; + } + } + if (ref($currtargets) eq 'HASH') { + foreach my $sparetype (@sparestypes) { + if (ref($currtargets->{$sparetype}) eq 'ARRAY') { + my @targetdiffs = &Apache::loncommon::compare_arrays($currtargets->{$sparetype},$defaultshash{'loadbalancing'}{'targets'}{$sparetype}); + if (@targetdiffs > 0) { + $changes{'targets'} = 1; + } + } elsif (ref($defaultshash{'loadbalancing'}{'targets'}{$sparetype}) eq 'ARRAY') { + if (@{$defaultshash{'loadbalancing'}{'targets'}{$sparetype}} > 0) { + $changes{'targets'} = 1; + } + } + } + } else { + foreach my $sparetype (@sparestypes) { + if (ref($defaultshash{'loadbalancing'}{'targets'}{$sparetype}) eq 'ARRAY') { + if (@{$defaultshash{'loadbalancing'}{'targets'}{$sparetype}} > 0) { + $changes{'targets'} = 1; + } + } + } + } + my $ishomedom; + if ($balancer ne '') { + if (&Apache::lonnet::host_domain($balancer) eq $dom) { + $ishomedom = 1; + } + } + if (ref($alltypes) eq 'ARRAY') { + foreach my $type (@{$alltypes}) { + my $rule; + if ($balancer ne '') { + unless ((($type eq '_LC_external') || ($type eq '_LC_internetdom')) && + (!$ishomedom)) { + $rule = $env{'form.loadbalancing_rules_'.$type}; + } + if ($rule eq 'specific') { + $rule = $env{'form.loadbalancing_singleserver_'.$type}; + } + } + $defaultshash{'loadbalancing'}{'rules'}{$type} = $rule; + if (ref($currrules) eq 'HASH') { + if ($rule ne $currrules->{$type}) { + $changes{'rules'}{$type} = 1; + } + } elsif ($rule ne '') { + $changes{'rules'}{$type} = 1; + } + } + } + my $nochgmsg = &mt('No changes made to Load Balancer settings.'); + if ((keys(%changes) > 0) || ($saveloadbalancing)) { + my $putresult = &Apache::lonnet::put_dom('configuration', + \%defaultshash,$dom); + if ($putresult eq 'ok') { + if (keys(%changes) > 0) { + if ($changes{'lonhost'}) { + if ($currbalancer ne '') { + &Apache::lonnet::remote_devalidate_cache($currbalancer,'loadbalancing',$dom); + } + if ($balancer eq '') { + $resulttext .= '
  • '.&mt('Load Balancing with dedicated server discontinued').'
    • '; + } else { + &Apache::lonnet::remote_devalidate_cache($balancer,'loadbalancing',$dom); + $resulttext .= '
  • '.&mt('Dedicated Load Balancer server set to [_1]',$balancer); + } + } else { + &Apache::lonnet::remote_devalidate_cache($balancer,'loadbalancing',$dom); + } + if (($changes{'targets'}) && ($balancer ne '')) { + my %offloadstr; + foreach my $sparetype (@sparestypes) { + if (ref($defaultshash{'loadbalancing'}{'targets'}{$sparetype}) eq 'ARRAY') { + if (@{$defaultshash{'loadbalancing'}{'targets'}{$sparetype}} > 0) { + $offloadstr{$sparetype} = join(', ',@{$defaultshash{'loadbalancing'}{'targets'}{$sparetype}}); + } + } + } + if (keys(%offloadstr) == 0) { + $resulttext .= '
  • '.&mt("Servers to which Load Balance server offloads set to 'None', by default").'
    • '; + } else { + my $showoffload; + foreach my $sparetype (@sparestypes) { + $showoffload .= ''.$typetitles{$sparetype}.': '; + if (defined($offloadstr{$sparetype})) { + $showoffload .= $offloadstr{$sparetype}; + } else { + $showoffload .= &mt('None'); + } + $showoffload .= (' 'x3); + } + $resulttext .= '
  • '.&mt('By default, Load Balancer server set to offload to: [_1]',$showoffload).'
    • '; + } + } + if ((ref($changes{'rules'}) eq 'HASH') && ($balancer ne '')) { + if ((ref($alltypes) eq 'ARRAY') && (ref($titles) eq 'HASH')) { + foreach my $type (@{$alltypes}) { + if ($changes{'rules'}{$type}) { + my $rule = $defaultshash{'loadbalancing'}{'rules'}{$type}; + my $balancetext; + if ($rule eq '') { + $balancetext = $ruletitles{'default'}; + } elsif (($rule eq 'homeserver') || ($rule eq 'externalbalancer')) { + $balancetext = $ruletitles{$rule}; + } else { + $balancetext = &mt('offload to [_1]',$defaultshash{'loadbalancing'}{'rules'}{$type}); + } + $resulttext .= '
  • '.&mt('Load Balancing for [_1] set to: [_2]',$titles->{$type},$balancetext).'
    • '; + } + } + } + } + if ($resulttext ne '') { + $resulttext = &mt('Changes made:').'
      '.$resulttext.'
    '; + } else { + $resulttext = $nochgmsg; + } + } else { + $resulttext = $nochgmsg; + if ($balancer ne '') { + &Apache::lonnet::remote_devalidate_cache($balancer,'loadbalancing',$dom); + } + } + } else { + $resulttext = ''. + &mt('An error occurred: [_1]',$putresult).''; + } + } else { + $resulttext = $nochgmsg; + } + } else { + $resulttext = &mt('Load Balancing unavailable as this domain only has one server.'); + } + return $resulttext; +} + sub recurse_check { my ($chkcats,$categories,$depth,$name) = @_; if (ref($chkcats->[$depth]{$name}) eq 'ARRAY') { @@ -7338,4 +7813,201 @@ sub usersession_titles { ); } +sub count_servers { + my ($currbalancer,%servers) = @_; + my (@spares,$numspares); + foreach my $lonhost (sort(keys(%servers))) { + next if ($currbalancer eq $lonhost); + push(@spares,$lonhost); + } + if ($currbalancer) { + $numspares = scalar(@spares); + } else { + $numspares = scalar(@spares) - 1; + } + return ($numspares,@spares); +} + +sub lonbalance_targets_js { + my ($dom,$types,$servers) = @_; + my $select = &mt('Select'); + my ($alltargets,$allishome,$allinsttypes,@alltypes); + if (ref($servers) eq 'HASH') { + $alltargets = join("','",sort(keys(%{$servers}))); + my @homedoms; + foreach my $server (sort(keys(%{$servers}))) { + if (&Apache::lonnet::host_domain($server) eq $dom) { + push(@homedoms,'1'); + } else { + push(@homedoms,'0'); + } + } + $allishome = join("','",@homedoms); + } + if (ref($types) eq 'ARRAY') { + if (@{$types} > 0) { + @alltypes = @{$types}; + } + } + push(@alltypes,'default','_LC_adv','_LC_author','_LC_internetdom','_LC_external'); + $allinsttypes = join("','",@alltypes); + return <<"END"; + + + +END +} + 1;