1 files changed, 127 insertions, 0 deletions
diff --git a/extensions/Push/lib/BacklogQueue.pm b/extensions/Push/lib/BacklogQueue.pm
new file mode 100644
index 000000000..79b9b72ee
--- /dev/null
+++ b/extensions/Push/lib/BacklogQueue.pm
@@ -0,0 +1,127 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This Source Code Form is "Incompatible With Secondary Licenses", as
+# defined by the Mozilla Public License, v. 2.0.
+
+package Bugzilla::Extension::Push::BacklogQueue;
+
+use strict;
+use warnings;
+
+use Bugzilla;
+use Bugzilla::Extension::Push::BacklogMessage;
+
+sub new {
+    my ($class, $connector) = @_;
+    my $self = {};
+    bless($self, $class);
+    $self->{connector} = $connector;
+    return $self;
+}
+
+sub count {
+    my ($self) = @_;
+    my $dbh = Bugzilla->dbh;
+    return $dbh->selectrow_array("
+        SELECT COUNT(*)
+          FROM push_backlog
+         WHERE connector = ?",
+        undef,
+        $self->{connector});
+}
+
+sub oldest {
+    my ($self) = @_;
+    my @messages = $self->list(
+        limit => 1,
+        filter => 'AND ((next_attempt_ts IS NULL) OR (next_attempt_ts <= NOW()))',
+    );
+    return scalar(@messages) ? $messages[0] : undef;
+}
+
+sub by_id {
+    my ($self, $id) = @_;
+    my @messages = $self->list(
+        limit => 1,
+        filter => "AND (log.id = $id)",
+    );
+    return scalar(@messages) ? $messages[0] : undef;
+}
+
+sub list {
+    my ($self, %args) = @_;
+    $args{limit} ||= 10;
+    $args{filter} ||= '';
+    my @result;
+    my $dbh = Bugzilla->dbh;
+
+    my $filter_sql = $args{filter} || '';
+    my $sth = $dbh->prepare("
+        SELECT log.id, message_id, push_ts, payload, change_set, routing_key, attempt_ts, log.attempts
+          FROM push_backlog log
+               LEFT JOIN push_backoff off ON off.connector = log.connector
+         WHERE log.connector = ? ".
+               $args{filter} . "
+         ORDER BY push_ts " .
+         $dbh->sql_limit($args{limit})
+    );
+    $sth->execute($self->{connector});
+    while (my $row = $sth->fetchrow_hashref()) {
+        push @result, Bugzilla::Extension::Push::BacklogMessage->new({
+            id          => $row->{id},
+            message_id  => $row->{message_id},
+            push_ts     => $row->{push_ts},
+            payload     => $row->{payload},
+            change_set  => $row->{change_set},
+            routing_key => $row->{routing_key},
+            connector   => $self->{connector},
+            attempt_ts  => $row->{attempt_ts},
+            attempts    => $row->{attempts},
+        });
+    }
+    return @result;
+}
+
+#
+# backoff
+#
+
+sub backoff {
+    my ($self) = @_;
+    if (!$self->{backoff}) {
+        my $ra = Bugzilla::Extension::Push::Backoff->match({
+            connector => $self->{connector}
+        });
+        if (@$ra) {
+            $self->{backoff} = $ra->[0];
+        } else {
+            $self->{backoff} = Bugzilla::Extension::Push::Backoff->create({
+                connector => $self->{connector}
+            });
+        }
+    }
+    return $self->{backoff};
+}
+
+sub reset_backoff {
+    my ($self) = @_;
+    my $backoff = $self->backoff;
+    $backoff->reset();
+    $backoff->update();
+}
+
+sub inc_backoff {
+    my ($self) = @_;
+    my $backoff = $self->backoff;
+    $backoff->inc();
+    $backoff->update();
+}
+
+sub connector {
+    my ($self) = @_;
+    return $self->{connector};
+}
+
+1;