+if ( C4::Context->preference('SearchEngine') eq 'Elasticsearch' ) {
+ # Check ES configuration health and runtime status
+
+ my $es_status;
+ my $es_config_error;
+ my $es_running = 1;
+
+ my $es_conf;
+ try {
+ $es_conf = Koha::SearchEngine::Elasticsearch::_read_configuration();
+ }
+ catch {
+ if ( ref($_) eq 'Koha::Exceptions::Config::MissingEntry' ) {
+ $template->param( elasticsearch_fatal_config_error => $_->message );
+ $es_config_error = 1;
+ }
+ };
+ if ( !$es_config_error ) {
+
+ my $biblios_index_name = $es_conf->{index_name} . "_" . $Koha::SearchEngine::BIBLIOS_INDEX;
+ my $authorities_index_name = $es_conf->{index_name} . "_" . $Koha::SearchEngine::AUTHORITIES_INDEX;
+
+ my @indexes = ($biblios_index_name, $authorities_index_name);
+ # TODO: When new indexes get added, we could have other ways to
+ # fetch the list of available indexes (e.g. plugins, etc)
+ $es_status->{nodes} = $es_conf->{nodes};
+ my $es = Search::Elasticsearch->new({ nodes => $es_conf->{nodes} });
+
+ foreach my $index ( @indexes ) {
+ my $count;
+ try {
+ $count = $es->indices->stats( index => $index )
+ ->{_all}{primaries}{docs}{count};
+ }
+ catch {
+ if ( ref($_) eq 'Search::Elasticsearch::Error::Missing' ) {
+ push @{ $es_status->{errors} }, "Index not found ($index)";
+ $count = -1;
+ }
+ elsif ( ref($_) eq 'Search::Elasticsearch::Error::NoNodes' ) {
+ $es_running = 0;
+ }
+ else {
+ # TODO: when time comes, we will cover more use cases
+ die $_;
+ }
+ };
+
+ push @{ $es_status->{indexes} },
+ {
+ index_name => $index,
+ count => $count
+ };
+ }
+ $es_status->{running} = $es_running;
+
+ $template->param( elasticsearch_status => $es_status );
+ }
+}
+
+if ( C4::Context->preference('RESTOAuth2ClientCredentials') ) {
+ # Do we have the required deps?
+ unless ( can_load( modules => { 'Net::OAuth2::AuthorizationServer' => undef }) ) {
+ $template->param( oauth2_missing_deps => 1 );
+ }
+}
+