--- loncom/interface/domainprefs.pm 2012/09/25 20:38:47 1.160.6.6 +++ loncom/interface/domainprefs.pm 2012/09/25 23:20:42 1.160.6.7 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # Handler to set domain-wide configuration settings # -# $Id: domainprefs.pm,v 1.160.6.6 2012/09/25 20:38:47 raeburn Exp $ +# $Id: domainprefs.pm,v 1.160.6.7 2012/09/25 23:20:42 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -217,7 +217,11 @@ sub handler { 'usercreation','usermodification','scantron', 'requestcourses','requestauthor','coursecategories', 'serverstatuses','usersessions'); - if (keys(%servers) > 1) { + my %existing; + if (ref($domconfig{'loadbalancing'}) eq 'HASH') { + %existing = %{$domconfig{'loadbalancing'}}; + } + if ((keys(%servers) > 1) || (keys(%existing) > 0)) { push(@prefs_order,'loadbalancing'); } my %prefs = ( @@ -360,9 +364,9 @@ sub handler { col2 => 'Rules'}], }, 'loadbalancing' => - {text => 'Dedicated Load Balancer', + {text => 'Dedicated Load Balancer(s)', help => 'Domain_Configuration_Load_Balancing', - header => [{col1 => 'Server', + header => [{col1 => 'Balancers', col2 => 'Default destinations', col3 => 'User affliation', col4 => 'Overrides'}, @@ -390,10 +394,11 @@ sub handler { &Apache::lonconfigsettings::make_changes($r,$dom,$phase,$context,\@prefs_order,\%prefs,\%domconfig,$confname,\@roles); } elsif ($phase eq 'display') { my $js = &recaptcha_js(); - if (keys(%servers) > 1) { + if ((keys(%servers) > 1) || (keys(%existing) > 0)) { my ($othertitle,$usertypes,$types) = &Apache::loncommon::sorted_inst_types($dom); - $js .= &lonbalance_targets_js($dom,$types,\%servers). + $js .= &lonbalance_targets_js($dom,$types,\%servers, + $domconfig{'loadbalancing'}). &new_spares_js(). &common_domprefs_js(). &Apache::loncommon::javascript_array_indexof(); @@ -2849,16 +2854,13 @@ sub print_loadbalancing { 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,$currtargets) = - &Apache::lonnet::get_lonbalancer_config(\%servers); - } + my (%currbalancer,%currtargets,%currrules,%existing); + if (ref($settings) eq 'HASH') { + %existing = %{$settings}; + } + if ((keys(%servers) > 1) || (keys(%existing) > 0)) { + &get_loadbalancers_config(\%servers,\%existing,\%currbalancer, + \%currtargets,\%currrules); } else { return; } @@ -2868,104 +2870,191 @@ sub print_loadbalancing { if (ref($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 @css_class = ('LC_odd_row','LC_even_row'); + my $balnum = 0; + my $islast; + my (@toshow,$disabledtext); + if (keys(%currbalancer) > 0) { + @toshow = sort(keys(%currbalancer)); + if (scalar(@toshow) < scalar(keys(%servers)) + 1) { + push(@toshow,''); + } + } else { + @toshow = (''); + $disabledtext = &mt('No existing load balancer'); + } + foreach my $lonhost (@toshow) { + if ($balnum == scalar(@toshow)-1) { + $islast = 1; + } else { + $islast = 0; + } + my $cssidx = $balnum%2; + my $targets_div_style = 'display: none'; + my $disabled_div_style = 'display: block'; + my $homedom_div_style = 'display: none'; + $datatable .= ''. + ''. + '

'; + if ($lonhost eq '') { + $datatable .= ''; + if (keys(%currbalancer) > 0) { + $datatable .= &mt('Add balancer:'); + } else { + $datatable .= &mt('Enable balancer:'); + } + $datatable .= ' '. + ''."\n". + ' '."\n"; + } else { + $datatable .= ''.$lonhost.'
'. + ''. + ''; + $targets_div_style = 'display: block'; + $disabled_div_style = 'display: none'; + if ($dom eq &Apache::lonnet::host_domain($lonhost)) { + $homedom_div_style = 'display: block'; + } + } + $datatable .= '

'. + '
'.$disabledtext.'
'."\n". + '
'.&mt('Offloads to:').'
'; + my ($numspares,@spares) = &count_servers($lonhost,%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{$lonhost}) eq 'HASH') { + if (ref($currtargets{$lonhost}{$sparetype}) eq 'ARRAY') { + if (grep(/^\Q$spares[$i]\E$/,@{$currtargets{$lonhost}{$sparetype}})) { + $checked = ' checked="checked"'; + } + } + } + my ($chkboxval,$disabled); + if (($lonhost ne '') && (exists($servers{$lonhost}))) { + $chkboxval = $spares[$i]; + } + if (exists($currbalancer{$spares[$i]})) { + $disabled = ' disabled="disabled"'; + } + $targettable .= + ''; + my $rem = $i%($numinrow); + if ($rem == 0) { + if (($i > 0) && ($i < $numspares-1)) { + $targettable .= ''; + } + if ($i < $numspares-1) { + $targettable .= ''; } } } - 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.'

'; + } + } + my $cssidx = $balnum%2; + $datatable .= '
'. + &loadbalancing_rules($dom,$intdom,$currrules{$lonhost}, + $othertitle,$usertypes,$types,\%servers, + \%currbalancer,$lonhost, + $targets_div_style,$homedom_div_style, + $css_class[$cssidx],$balnum,$islast); + $$rowtotal += $rownum; + $balnum ++; + } + $datatable .= ''; + return $datatable; +} + +sub get_loadbalancers_config { + my ($servers,$existing,$currbalancer,$currtargets,$currrules) = @_; + return unless ((ref($servers) eq 'HASH') && + (ref($existing) eq 'HASH') && (ref($currbalancer) eq 'HASH') && + (ref($currtargets) eq 'HASH') && (ref($currrules) eq 'HASH')); + if (keys(%{$existing}) > 0) { + my $oldlonhost; + foreach my $key (sort(keys(%{$existing}))) { + if ($key eq 'lonhost') { + $oldlonhost = $existing->{'lonhost'}; + $currbalancer->{$oldlonhost} = 1; + } elsif ($key eq 'targets') { + if ($oldlonhost) { + $currtargets->{$oldlonhost} = $existing->{'targets'}; + } + } elsif ($key eq 'rules') { + if ($oldlonhost) { + $currrules->{$oldlonhost} = $existing->{'rules'}; + } + } elsif (ref($existing->{$key}) eq 'HASH') { + $currbalancer->{$key} = 1; + $currtargets->{$key} = $existing->{$key}{'targets'}; + $currrules->{$key} = $existing->{$key}{'rules'}; } } - if ($targettable ne '') { - my $rem = $numspares%($numinrow); - my $colsleft = $numinrow - $rem; - if ($colsleft > 1 ) { - $targettable .= ''. - ' '; - } elsif ($colsleft == 1) { - $targettable .= ' '; + } else { + my ($balancerref,$targetsref) = + &Apache::lonnet::get_lonbalancer_config($servers); + if ((ref($balancerref) eq 'HASH') && (ref($targetsref) eq 'HASH')) { + foreach my $server (sort(keys(%{$balancerref}))) { + $currbalancer->{$server} = 1; + $currtargets->{$server} = $targetsref->{$server}; } - $datatable .= ''.$typetitles{$sparetype}.'
'. - ''.$targettable.'

'; } } - $datatable .= '
'. - &loadbalancing_rules($dom,$intdom,$currrules,$othertitle, - $usertypes,$types,\%servers,$currbalancer, - $targets_div_style,$homedom_div_style,$css_class); - $$rowtotal += $rownum; - return $datatable; + return; } sub loadbalancing_rules { my ($dom,$intdom,$currrules,$othertitle,$usertypes,$types,$servers, - $currbalancer,$targets_div_style,$homedom_div_style,$css_class) = @_; + $currbalancer,$lonhost,$targets_div_style,$homedom_div_style, + $css_class,$balnum,$islast) = @_; my $output; - my ($alltypes,$othertypes,$titles) = + my $num = 0; + my ($alltypes,$othertypes,$titles) = &loadbalancing_titles($dom,$intdom,$usertypes,$types); if ((ref($alltypes) eq 'ARRAY') && (ref($titles) eq 'HASH')) { foreach my $type (@{$alltypes}) { + $num ++; 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)) { + if ($dom ne &Apache::lonnet::host_domain($lonhost)) { $current = ''; } } $output .= &loadbalance_rule_row($type,$titles->{$type},$current, - $servers,$currbalancer,$dom, - $targets_div_style,$homedom_div_style,$css_class); + $servers,$currbalancer,$lonhost,$dom, + $targets_div_style,$homedom_div_style, + $css_class,$balnum,$num,$islast); } } return $output; @@ -3002,8 +3091,8 @@ sub loadbalancing_titles { } sub loadbalance_rule_row { - my ($type,$title,$current,$servers,$currbalancer,$dom,$targets_div_style, - $homedom_div_style,$css_class) = @_; + my ($type,$title,$current,$servers,$currbalancer,$lonhost,$dom, + $targets_div_style,$homedom_div_style,$css_class,$balnum,$num,$islast) = @_; my @rulenames = ('default','homeserver'); my %ruletitles = &offloadtype_text(); if ($type eq '_LC_external') { @@ -3016,9 +3105,15 @@ sub loadbalance_rule_row { if (($type eq '_LC_external') || ($type eq '_LC_internetdom')) { $style = $homedom_div_style; } - my $output = - '
'.$title.'
'."\n". - '
'."\n"; + my $space; + if ($islast && $num == 1) { + $space = '
 
'; + } + my $output = + ''.$space. + '
'.$title.'
'."\n". + ''.$space. + '
'."\n"; for (my $i=0; $i<@rulenames; $i++) { my $rule = $rulenames[$i]; my ($checked,$extra); @@ -3034,17 +3129,20 @@ sub loadbalance_rule_row { unless ($checked) { $default = ' selected="selected"'; } - $extra = ': '."\n". + ''."\n"; + foreach my $server (sort(keys(%{$servers}))) { + if (ref($currbalancer) eq 'HASH') { + next if (exists($currbalancer->{$server})); + } my $selected; - if ($lonhost eq $current) { + if ($server eq $current) { $selected = ' selected="selected"'; } - $extra .= ''; + $extra .= ''; } $extra .= ''; } @@ -3052,9 +3150,9 @@ sub loadbalance_rule_row { $checked = ' checked="checked"'; } $output .= ''.$extra.'
'."\n"; } @@ -8036,186 +8134,192 @@ sub modify_loadbalancing { 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') { - $saveloadbalancing = 1; + my (%currbalancer,%currtargets,%currrules,%existing); + if (ref($domconfig{'loadbalancing'}) eq 'HASH') { + %existing = %{$domconfig{'loadbalancing'}}; + } + &get_loadbalancers_config(\%servers,\%existing,\%currbalancer, + \%currtargets,\%currrules); + my ($saveloadbalancing,%defaultshash,%changes); + my ($alltypes,$othertypes,$titles) = + &loadbalancing_titles($dom,$intdom,$usertypes,$types); + my %ruletitles = &offloadtype_text(); + my @deletions = &Apache::loncommon::get_env_multiple('form.loadbalancing_delete'); + for (my $i=0; $i<$env{'form.loadbalancing_total'}; $i++) { + my $balancer = $env{'form.loadbalancing_lonhost_'.$i}; + if ($balancer eq '') { + next; + } + if (!exists($servers{$balancer})) { + if (exists($currbalancer{$balancer})) { + push(@{$changes{'delete'}},$balancer); } - foreach my $sparetype (@sparestypes) { - my @targets = &Apache::loncommon::get_env_multiple('form.loadbalancing_target_'.$sparetype); - my @offloadto; - foreach my $target (@targets) { - if (($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,$target); + next; + } + if ((@deletions > 0) && (grep(/^\Q$i\E$/,@deletions))) { + push(@{$changes{'delete'}},$balancer); + next; + } + if (!exists($currbalancer{$balancer})) { + push(@{$changes{'add'}},$balancer); + } + $defaultshash{'loadbalancing'}{$balancer}{'targets'}{'primary'} = []; + $defaultshash{'loadbalancing'}{$balancer}{'targets'}{'default'} = []; + $defaultshash{'loadbalancing'}{$balancer}{'rules'} = {}; + unless (ref($domconfig{'loadbalancing'}) eq 'HASH') { + $saveloadbalancing = 1; + } + foreach my $sparetype (@sparestypes) { + my @targets = &Apache::loncommon::get_env_multiple('form.loadbalancing_target_'.$i.'_'.$sparetype); + my @offloadto; + foreach my $target (@targets) { + if (($servers{$target}) && ($target ne $balancer)) { + if ($sparetype eq 'default') { + if (ref($defaultshash{'loadbalancing'}{$balancer}{'targets'}{'primary'}) eq 'ARRAY') { + next if (grep(/^\Q$target\E$/,@{$defaultshash{'loadbalancing'}{$balancer}{'targets'}{'primary'}})); } } - $defaultshash{'loadbalancing'}{'targets'}{$sparetype} = \@offloadto; + unless(grep(/^\Q$target\E$/,@offloadto)) { + push(@offloadto,$target); + } } - } - } else { - foreach my $sparetype (@sparestypes) { - $defaultshash{'loadbalancing'}{'targets'}{$sparetype} = []; + $defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype} = \@offloadto; } } - if (ref($currtargets) eq 'HASH') { + if (ref($currtargets{$balancer}) eq 'HASH') { foreach my $sparetype (@sparestypes) { - if (ref($currtargets->{$sparetype}) eq 'ARRAY') { - my @targetdiffs = &Apache::loncommon::compare_arrays($currtargets->{$sparetype},$defaultshash{'loadbalancing'}{'targets'}{$sparetype}); + if (ref($currtargets{$balancer}{$sparetype}) eq 'ARRAY') { + my @targetdiffs = &Apache::loncommon::compare_arrays($currtargets{$balancer}{$sparetype},$defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}); if (@targetdiffs > 0) { - $changes{'targets'} = 1; + $changes{'curr'}{$balancer}{'targets'} = 1; } - } elsif (ref($defaultshash{'loadbalancing'}{'targets'}{$sparetype}) eq 'ARRAY') { - if (@{$defaultshash{'loadbalancing'}{'targets'}{$sparetype}} > 0) { - $changes{'targets'} = 1; + } elsif (ref($defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}) eq 'ARRAY') { + if (@{$defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}} > 0) { + $changes{'curr'}{$balancer}{'targets'} = 1; } } } } else { - foreach my $sparetype (@sparestypes) { - if (ref($defaultshash{'loadbalancing'}{'targets'}{$sparetype}) eq 'ARRAY') { - if (@{$defaultshash{'loadbalancing'}{'targets'}{$sparetype}} > 0) { - $changes{'targets'} = 1; + if (ref($defaultshash{'loadbalancing'}{$balancer}) eq 'HASH') { + foreach my $sparetype (@sparestypes) { + if (ref($defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}) eq 'ARRAY') { + if (@{$defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}} > 0) { + $changes{'curr'}{$balancer}{'targets'} = 1; + } } } - } + } } my $ishomedom; - if ($balancer ne '') { - if (&Apache::lonnet::host_domain($balancer) eq $dom) { - $ishomedom = 1; - } + if (&Apache::lonnet::host_domain($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')) && + 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}; - } + $rule = $env{'form.loadbalancing_rules_'.$i.'_'.$type}; + } + if ($rule eq 'specific') { + $rule = $env{'form.loadbalancing_singleserver_'.$i.'_'.$type}; } - $defaultshash{'loadbalancing'}{'rules'}{$type} = $rule; - if (ref($currrules) eq 'HASH') { - if ($rule ne $currrules->{$type}) { - $changes{'rules'}{$type} = 1; + $defaultshash{'loadbalancing'}{$balancer}{'rules'}{$type} = $rule; + if (ref($currrules{$balancer}) eq 'HASH') { + if ($rule ne $currrules{$balancer}{$type}) { + $changes{'curr'}{$balancer}{'rules'}{$type} = 1; } } elsif ($rule ne '') { - $changes{'rules'}{$type} = 1; + $changes{'curr'}{$balancer}{'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 { + } + my $nochgmsg = &mt('No changes made to Load Balancer settings.'); + if ((keys(%changes) > 0) || ($saveloadbalancing)) { + unless (ref($defaultshash{'loadbalancing'}) eq 'HASH') { + $defaultshash{'loadbalancing'} = {}; + } + my $putresult = &Apache::lonnet::put_dom('configuration', + \%defaultshash,$dom); + + if ($putresult eq 'ok') { + if (keys(%changes) > 0) { + if (ref($changes{'delete'}) eq 'ARRAY') { + foreach my $balancer (sort(@{$changes{'delete'}})) { + $resulttext .= '
  • '.&mt('Load Balancing discontinued for: [_1]',$balancer).'
    • '; &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 (ref($changes{'add'}) eq 'ARRAY') { + foreach my $balancer (sort(@{$changes{'add'}})) { + $resulttext .= '
  • '.&mt('Load Balancing enabled for: [_1]',$balancer); + } + } + if (ref($changes{'curr'}) eq 'HASH') { + foreach my $balancer (sort(keys(%{$changes{'curr'}}))) { + if (ref($changes{'curr'}{$balancer}) eq 'HASH') { + if ($changes{'curr'}{$balancer}{'targets'}) { + my %offloadstr; + foreach my $sparetype (@sparestypes) { + if (ref($defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}) eq 'ARRAY') { + if (@{$defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}} > 0) { + $offloadstr{$sparetype} = join(', ',@{$defaultshash{'loadbalancing'}{$balancer}{'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}; + if (keys(%offloadstr) == 0) { + $resulttext .= '
  • '.&mt("Servers to which Load Balance server offloads set to 'None', by default").'
    • '; } else { - $showoffload .= &mt('None'); + my $showoffload; + foreach my $sparetype (@sparestypes) { + $showoffload .= ''.$typetitles{$sparetype}.': '; + if (defined($offloadstr{$sparetype})) { + $showoffload .= $offloadstr{$sparetype}; + } else { + $showoffload .= &mt('None'); + } + $showoffload .= (' 'x3); + } + $resulttext .= '
  • '.&mt('By default, Load Balancer: [_1] set to offload to - [_2]',$balancer,$showoffload).'
    • '; } - $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'}{$type}); + if (ref($changes{'curr'}{$balancer}{'rules'}) eq 'HASH') { + if ((ref($alltypes) eq 'ARRAY') && (ref($titles) eq 'HASH')) { + foreach my $type (@{$alltypes}) { + if ($changes{'curr'}{$balancer}{'rules'}{$type}) { + my $rule = $defaultshash{'loadbalancing'}{$balancer}{'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'}{$balancer}{'rules'}{$type}); + } + $resulttext .= '
  • '.&mt('Load Balancer: [_1] -- balancing for [_2] set to - "[_3]"',$balancer,$titles->{$type},$balancetext).'
    • '; } - $resulttext .= '
  • '.&mt('Load Balancing for [_1] set to: [_2]',$titles->{$type},$balancetext).'
    • '; } } } + &Apache::lonnet::remote_devalidate_cache($balancer,'loadbalancing',$dom); } - if ($resulttext ne '') { - $resulttext = &mt('Changes made:').'
      '.$resulttext.'
    '; - } else { - $resulttext = $nochgmsg; - } + } + if ($resulttext ne '') { + $resulttext = &mt('Changes made:').'
      '.$resulttext.'
    '; } else { $resulttext = $nochgmsg; - if ($balancer ne '') { - &Apache::lonnet::remote_devalidate_cache($balancer,'loadbalancing',$dom); - } } } else { - $resulttext = ''. - &mt('An error occurred: [_1]',$putresult).''; + $resulttext = $nochgmsg; } } else { - $resulttext = $nochgmsg; + $resulttext = ''. + &mt('An error occurred: [_1]',$putresult).''; } } else { - $resulttext = &mt('Load Balancing unavailable as this domain only has one server.'); + $resulttext = $nochgmsg; } return $resulttext; } @@ -8371,7 +8475,7 @@ sub count_servers { } sub lonbalance_targets_js { - my ($dom,$types,$servers) = @_; + my ($dom,$types,$servers,$settings) = @_; my $select = &mt('Select'); my ($alltargets,$allishome,$allinsttypes,@alltypes); if (ref($servers) eq 'HASH') { @@ -8393,39 +8497,71 @@ sub lonbalance_targets_js { } push(@alltypes,'default','_LC_adv','_LC_author','_LC_internetdom','_LC_external'); $allinsttypes = join("','",@alltypes); + my (%currbalancer,%currtargets,%currrules,%existing); + if (ref($settings) eq 'HASH') { + %existing = %{$settings}; + } + &get_loadbalancers_config($servers,\%existing,\%currbalancer, + \%currtargets,\%currrules); + my $balancers = join("','",sort(keys(%currbalancer))); return <<"END";