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|
#!/usr/bin/env perl
use Mojolicious::Lite;
use DBI;
use Travel::Status::DE::IRIS;
use Travel::Status::DE::IRIS::Stations;
use 5.014;
use utf8;
no if $] >= 5.018, warnings => "experimental::smartmatch";
#our $VERSION = qx{git describe --dirty} || '0.01';
my $table = $ENV{DBDB_TABLE} // 'departures';
app->defaults( layout => 'default' );
app->attr(
dbh => sub {
my $self = shift;
my $dbname = $ENV{DBDB_FILE} // 'iris.sqlite';
my $dbh = DBI->connect( "dbi:SQLite:dbname=$dbname", q{}, q{} );
return $dbh;
}
);
helper count_unique_column => sub {
my ($self, $column) = @_;
my $dbh = $self->app->dbh;
if (not $column) {
return scalar $dbh->selectall_arrayref("select count() from $table")->[0][0];
}
return scalar $dbh->selectall_arrayref("select count(distinct $column) from $table")->[0][0];
};
helper single_query => sub {
my ($self, $query) = @_;
return scalar $self->app->dbh->selectall_arrayref($query)->[0][0];
};
helper globalstats => sub {
my ($self) = @_;
my $dbh = $self->app->dbh;
my $stations = [ map { Travel::Status::DE::IRIS::Stations::get_station($_)->[1] }
@{ $self->app->dbh->selectcol_arrayref(
"select distinct station from $table") } ];
my $ret = {
departures => $self->count_unique_column(),
stationlist => $stations,
stations => $self->count_unique_column('station'),
realtime => $self->single_query("select count() from $table where delay is not null"),
realtime_rate => $self->single_query("select avg(delay is not null) from $table"),
ontime => $self->single_query("select count() from $table where delay < 1"),
ontime_rate => $self->single_query("select avg(delay < 1) from $table"),
days => $self->count_unique_column('strftime("%Y%m%d", scheduled_time, "unixepoch")'),
delayed => $self->single_query("select count() from $table where delay > 5"),
delayed_rate => $self->single_query("select avg(delay > 5) from $table"),
canceled => $self->single_query("select count() from $table where is_canceled > 0"),
canceled_rate => $self->single_query("select avg(is_canceled > 0) from $table"),
delay_sum => $self->single_query("select sum(delay) from $table"),
delay_avg => $self->single_query("select avg(delay) from $table"),
};
return $ret;
};
get '/by_hour.json' => sub {
my $self = shift;
my $json = [];
my $res = $self->app->dbh->selectall_arrayref(
qq{
select strftime("%H", scheduled_time, "unixepoch") as time,
avg(delay) as date from $table group by time}
);
for my $row ( @{$res} ) {
push(
@{$json},
{
hour => $row->[0],
avgdelay => $row->[1]
}
);
}
$self->render( json => $json );
return;
};
get '/2ddata.tsv' => sub {
my $self = shift;
my $aggregate = $self->param('aggregate') // 'hour';
my $metric = $self->param('metric') // 'delay';
my $msgnum = int( $self->param('msgnum') // 0 );
my @weekdays = qw(So Mo Di Mi Do Fr Sa);
if ( $msgnum < 0 or $msgnum > 99 ) {
$msgnum = 0;
}
my $where_clause = '1 = 1';
my $res = "x\ty\n";
my $query;
my $format = 'strftime("%H", scheduled_time, "unixepoch")';
given ($aggregate) {
when ('weekday') {
$format = 'strftime("%w", scheduled_time, "unixepoch")';
}
when ('weekhour') {
$format = 'strftime("%w%H", scheduled_time, "unixepoch")';
}
when ('line') {
$format = 'train_type || " " || line_no';
$where_clause = 'line_no is not null';
}
when ('train_type') {
$format = 'train_type';
}
}
given ($metric) {
when ('cancel_num') {
$query = qq{
select $format as aggregate,
count(is_canceled) from $table where $where_clause group by aggregate
};
}
when ('cancel_rate') {
$query = qq{
select $format as aggregate,
avg(is_canceled) from $table where $where_clause group by aggregate
};
}
when ('delay') {
$query = qq{
select $format as aggregate,
avg(delay) from $table where not is_canceled and $where_clause group by aggregate
};
}
when ('message_rate') {
$query = qq{
select $format as aggregate,
avg(msgtable.train_id is not null) from $table
left outer join msg_$msgnum as msgtable using
(scheduled_time, train_id) where $where_clause group by aggregate
};
}
when ('realtime_rate') {
$query = qq{
select $format as aggregate,
avg(delay is not null) from $table
where $where_clause group by aggregate
};
}
}
my $dbres = $self->app->dbh->selectall_arrayref($query);
if ( $aggregate eq 'weekday' ) {
@{$dbres} = map { [ $weekdays[ $_->[0] ], $_->[1] ] }
( @{$dbres}[ 1 .. 6 ], $dbres->[0] );
}
elsif ( $aggregate eq 'weekhour' ) {
@{$dbres} = map {
[
$weekdays[ substr( $_->[0], 0, 1 ) ] . q{ }
. substr( $_->[0], 1 ),
$_->[1]
]
} ( @{$dbres}[ 1 * 24 .. 6 * 24 ], $dbres->[0] );
}
for my $row ( @{$dbres} ) {
$res .= sprintf( "%s\t%s\n", @{$row} );
}
$self->render( data => $res );
return;
};
get '/' => sub {
my $self = shift;
$self->render('intro');
return;
};
get '/all' => sub {
my $self = shift;
my $dbh = $self->app->dbh;
my $num_departures = $dbh->selectall_arrayref(
qq{
select count() from $table}
)->[0][0];
$self->render(
'main',
num_departures => $num_departures,
);
return;
};
app->config(
hypnotoad => {
accepts => 10,
listen => ['http://*:8093'],
pid_file => '/tmp/db-fake.pid',
workers => $ENV{DBDB_WORKERS} // 2,
},
);
app->types->type( json => 'application/json; charset=utf-8' );
app->start();
|
