101 lines
1.9 KiB
Perl
101 lines
1.9 KiB
Perl
|
package Travelynx::Model::JourneyStatsCache;
|
||
|
|
# Copyright (C) 2020 Daniel Friesel
|
||
|
|
#
|
||
|
|
# SPDX-License-Identifier: MIT
|
||
|
|
|
||
|
|
use strict;
|
||
|
|
use warnings;
|
||
|
|
use 5.020;
|
||
|
|
use utf8;
|
||
|
|
|
||
|
|
import JSON;
|
||
|
|
|
||
|
|
sub new {
|
||
|
|
my ( $class, %opt ) = @_;
|
||
|
|
|
||
|
|
return bless( \%opt, $class );
|
||
|
|
}
|
||
|
|
|
||
|
|
sub add {
|
||
|
|
my ( $self, %opt ) = @_;
|
||
|
|
|
||
|
|
my $db = $opt{db} // $self->{pg}->db;
|
||
|
|
|
||
|
|
eval {
|
||
|
|
$db->insert(
|
||
|
|
'journey_stats',
|
||
|
|
{
|
||
|
|
user_id => $opt{uid},
|
||
|
|
year => $opt{year},
|
||
|
|
month => $opt{month},
|
||
|
|
data => JSON->new->encode($opt{stats}),
|
||
|
|
}
|
||
|
|
);
|
||
|
|
};
|
||
|
|
if ( my $err = $@ ) {
|
||
|
|
if ( $err =~ m{duplicate key value violates unique constraint} )
|
||
|
|
{
|
||
|
|
# If a user opens the same history page several times in
|
||
|
|
# short succession, there is a race condition where several
|
||
|
|
# Mojolicious workers execute this helper, notice that there is
|
||
|
|
# no up-to-date history, compute it, and insert it using the
|
||
|
|
# statement above. This will lead to a uniqueness violation
|
||
|
|
# in each successive insert. However, this is harmless, and
|
||
|
|
# thus ignored.
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
# Otherwise we probably have a problem.
|
||
|
|
die($@);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
sub get {
|
||
|
|
my ( $self, %opt ) = @_;
|
||
|
|
|
||
|
|
my $db = $opt{db} // $self->{pg}->db;
|
||
|
|
|
||
|
|
my $stats = $db->select(
|
||
|
|
'journey_stats',
|
||
|
|
['data'],
|
||
|
|
{
|
||
|
|
user_id => $opt{uid},
|
||
|
|
year => $opt{year},
|
||
|
|
month => $opt{month}
|
||
|
|
}
|
||
|
|
)->expand->hash;
|
||
|
|
|
||
|
|
return $stats->{data};
|
||
|
|
}
|
||
|
|
|
||
|
|
# Statistics are partitioned by real_departure, which must be provided
|
||
|
|
# when calling this function e.g. after journey deletion or editing.
|
||
|
|
# If a joureny's real_departure has been edited, this function must be
|
||
|
|
# called twice: once with the old and once with the new value.
|
||
|
|
sub invalidate {
|
||
|
|
my ( $self, %opt ) = @_;
|
||
|
|
|
||
|
|
my $ts = $opt{ts};
|
||
|
|
my $db = $opt{db} // $self->{pg}->db;
|
||
|
|
my $uid = $opt{uid};
|
||
|
|
|
||
|
|
$db->delete(
|
||
|
|
'journey_stats',
|
||
|
|
{
|
||
|
|
user_id => $uid,
|
||
|
|
year => $ts->year,
|
||
|
|
month => $ts->month,
|
||
|
|
}
|
||
|
|
);
|
||
|
|
$db->delete(
|
||
|
|
'journey_stats',
|
||
|
|
{
|
||
|
|
user_id => $uid,
|
||
|
|
year => $ts->year,
|
||
|
|
month => 0,
|
||
|
|
}
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
1;
|