From 29458987fb3e3f2027990a55c7c6e51c68683905 Mon Sep 17 00:00:00 2001
From: Moritz Bunkus <m.bunkus@linet-services.de>
Date: Tue, 3 Jun 2014 17:12:18 +0200
Subject: [PATCH] Task server: Fehlgeschlagene Jobs optional per E-Mail melden

---
 config/kivitendo.conf.default                 | 11 ++++
 scripts/task_server.pl                        | 61 ++++++++++++++++++-
 .../failure_notification_email.txt            | 16 +++++
 3 files changed, 86 insertions(+), 2 deletions(-)
 create mode 100644 templates/webpages/task_server/failure_notification_email.txt

diff --git a/config/kivitendo.conf.default b/config/kivitendo.conf.default
index 0005aba59..e6849a554 100644
--- a/config/kivitendo.conf.default
+++ b/config/kivitendo.conf.default
@@ -153,6 +153,17 @@ debug = 0
 # Chose a system user the daemon should run under when started as root.
 run_as =
 
+[task_server/notify_on_failure]
+# If you want email notifications for failed jobs then set this to a
+# kivitendo user (login) name. The subject can be changed as well.
+send_email_to  =
+# The "From:" header for said email.
+email_from     = kivitendo Daemon <root@localhost>
+# The subject for said email.
+email_subject  = kivitendo Task-Server: Hintergrundjob fehlgeschlagen
+# The template file used for the email's body.
+email_template = templates/webpages/task_server/failure_notification_email.txt
+
 [periodic_invoices]
 # The user name a report about the posted and printed invoices is sent
 # to.
diff --git a/scripts/task_server.pl b/scripts/task_server.pl
index 81d2078c8..cb332ec07 100755
--- a/scripts/task_server.pl
+++ b/scripts/task_server.pl
@@ -1,5 +1,8 @@
 #!/usr/bin/perl
 
+
+use List::MoreUtils qw(any);
+
 use strict;
 
 my $exe_dir;
@@ -23,6 +26,7 @@ use Cwd;
 use Daemon::Generic;
 use Data::Dumper;
 use DateTime;
+use Encode qw();
 use English qw(-no_match_vars);
 use File::Spec;
 use List::Util qw(first);
@@ -36,7 +40,9 @@ use SL::InstanceConfiguration;
 use SL::LXDebug;
 use SL::LxOfficeConf;
 use SL::Locale;
+use SL::Mailer;
 use SL::System::TaskServer;
+use Template;
 
 our %lx_office_conf;
 
@@ -97,6 +103,50 @@ sub drop_privileges {
   }
 }
 
+sub notify_on_failure {
+  my (%params) = @_;
+
+  my $cfg = $lx_office_conf{'task_server/notify_on_failure'} || {};
+
+  return if any { !$cfg->{$_} } qw(send_email_to email_from email_subject email_template);
+
+  chdir $exe_dir;
+
+  return debug("Template " . $cfg->{email_template} . " missing!") unless -f $cfg->{email_template};
+
+  my $email_to = $cfg->{send_email_to};
+  if ($email_to !~ m{\@}) {
+    my %user = $::auth->read_user(login => $email_to);
+    return debug("cannot find user for notification $email_to") unless %user;
+
+    $email_to = $user{email};
+    return debug("user for notification " . $user{login} . " doesn't have a valid email address") unless $email_to =~ m{\@};
+  }
+
+  my $template  = Template->new({
+    INTERPOLATE => 0,
+    EVAL_PERL   => 0,
+    ABSOLUTE    => 1,
+    CACHE_SIZE  => 0,
+  });
+
+  return debug("Could not create Template instance") unless $template;
+
+  $params{client} = $::auth->client;
+
+  my $body;
+  $template->process($cfg->{email_template}, \%params, \$body);
+
+  Mailer->new(
+    from         => $cfg->{email_from},
+    to           => $email_to,
+    subject      => $cfg->{email_subject},
+    content_type => 'text/plain',
+    charset      => 'utf-8',
+    message      => Encode::decode('utf-8', $body),
+  )->send;
+}
+
 sub gd_preconfig {
   my $self = shift;
 
@@ -129,13 +179,20 @@ sub gd_run {
 
         chdir $exe_dir;
 
-        $job->run;
+        my $history = $job->run;
+
+        notify_on_failure(history => $history) if $history && $history->has_failed;
       }
 
       1;
     };
 
-    debug("Exception during execution: ${EVAL_ERROR}") if !$ok;
+    if (!$ok) {
+      my $error = $EVAL_ERROR;
+      debug("Exception during execution: ${error}");
+      notify_on_failure(exception => $error);
+    }
+
     debug("Sleeping");
 
     my $seconds = 60 - (localtime)[0];
diff --git a/templates/webpages/task_server/failure_notification_email.txt b/templates/webpages/task_server/failure_notification_email.txt
new file mode 100644
index 000000000..7d9746749
--- /dev/null
+++ b/templates/webpages/task_server/failure_notification_email.txt
@@ -0,0 +1,16 @@
+Hallo,
+
+[% IF history -%]
+der folgende Hintergrundjob ist bei kivitendo für den Mandanten [% client.name %] fehlgeschlagen:
+
+Paketname:  [% history.package_name %]
+Ausgeführt: [% history.run_at_as_timestamp %]
+Fehler:     [% history.error_col %]
+
+[% ELSE -%]
+bei der Ausführung des Task-Servers für den Mandanten [% client.name %] trat die folgende Ausnahme auf:
+
+[% exception %]
+[% END -%]
+MfG,
+kivitendo Task-Server
-- 
2.20.1