From 5a976f685ac9d960b4ce0bc837b247050128d7a3 Mon Sep 17 00:00:00 2001
From: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Date: Thu, 20 Feb 2020 13:26:53 +0100
Subject: [PATCH] Bug 22417: Try to display pending jobs - only work if worker
 not started

ie. no subscription yet

This needs to be fixed (if possible), or removed from the patchset

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>

Signed-off-by: David Cook <dcook@prosentient.com.au>

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
---
 admin/background_jobs.pl                      | 27 ++++++++++++++++++-
 .../prog/en/modules/admin/background_jobs.tt  | 13 ++++++++-
 2 files changed, 38 insertions(+), 2 deletions(-)

diff --git a/admin/background_jobs.pl b/admin/background_jobs.pl
index 498891c80a..4eacc8c4d4 100755
--- a/admin/background_jobs.pl
+++ b/admin/background_jobs.pl
@@ -18,6 +18,8 @@
 use Modern::Perl;
 use CGI qw ( -utf8 );
 use JSON qw( decode_json );
+use Try::Tiny;
+
 use C4::Context;
 use C4::Auth;
 use C4::Output;
@@ -64,7 +66,30 @@ if ( $op eq 'cancel' ) {
 
 if ( $op eq 'list' ) {
     my $jobs = Koha::BackgroundJobs->search({}, { order_by => { -desc => 'enqueued_on' }});
-    $template->param( jobs => $jobs, );
+    my @pending_jobs;
+    try {
+        my $conn = Koha::BackgroundJob->connect;
+        my $job_type = 'batch_biblio_record_modification';
+        $conn->subscribe({ destination => $job_type, ack => 'client' });
+        my @frames;
+        while (my $frame = $conn->receive_frame({timeout => 1})) {
+            last unless $frame;
+            my $body = $frame->body;
+            my $args = decode_json($body);
+            push @pending_jobs, $args->{job_id};
+            push @frames, $frame;
+        }
+        $conn->nack( { frame => $_ } ) for @frames;
+        $conn->disconnect;
+    } catch {
+        push @messages, {
+            type => 'error',
+            code => 'cannot_retrieve_jobs',
+            error => $_,
+        };
+    };
+
+    $template->param( jobs => $jobs, pending_jobs => \@pending_jobs, );
 }
 
 $template->param(
diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/admin/background_jobs.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/admin/background_jobs.tt
index d1cc6cec7d..2b04c0a844 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/admin/background_jobs.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/admin/background_jobs.tt
@@ -21,8 +21,10 @@
             <main>
 
 [% FOR m IN messages %]
-    <div class="dialog [% m.type | html %]">
+    <div class="dialog message">
         [% SWITCH m.code %]
+        [% CASE 'cannot_retrieve_jobs' %]
+            <div><i class="fa fa-exclamation error"></i>Cannot retrieve pending jobs ([% m.error %])</div>
         [% CASE %]
             [% m.code | html %]
         [% END %]
@@ -109,6 +111,15 @@
 
     <h2>Background jobs</h2>
 
+    <div class="dialog message">
+        <i class="fa fa-info"></i>
+        [% IF pending_jobs.size > 0 %]
+            There is [% pending_jobs.size %] pending jobs on the server: [% pending_jobs.join(', ') %].
+        [% ELSE %]
+            There is no pending jobs on the server.
+        [% END %]
+    </div>
+
     [% IF jobs.count %]
         <table id="table_background_jobs">
             <thead>
-- 
2.20.1