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package Travelynx::Command::database;
use Mojo::Base 'Mojolicious::Command';
use DateTime;
has description => 'Initialize or upgrade database layout';
has usage => sub { shift->extract_usage };
sub get_schema_version {
my ($dbh) = @_;
for my $entry (
$dbh->selectall_array(qq{select version from schema_version}) )
{
return $entry->[0];
}
}
sub initialize_db {
my ($dbh) = @_;
return $dbh->do(
qq{
create table schema_version (
version integer primary key
);
create table users (
id serial not null primary key,
name varchar(64) not null unique,
status smallint not null,
public_level smallint not null,
email varchar(256),
token varchar(80),
password text,
registered_at timestamptz not null,
last_login timestamptz not null,
deletion_requested timestamptz
);
create table stations (
id serial not null primary key,
ds100 varchar(16) not null unique,
name varchar(64) not null unique
);
create table user_actions (
id serial not null primary key,
user_id integer not null references users (id),
action_id smallint not null,
station_id int references stations (id),
action_time timestamptz not null,
edited smallint not null,
train_type varchar(16),
train_line varchar(16),
train_no varchar(16),
train_id varchar(128),
sched_time timestamptz,
real_time timestamptz,
route text,
messages text
);
create table pending_mails (
email varchar(256) not null primary key,
num_tries smallint not null,
last_try timestamptz not null
);
create table tokens (
user_id integer not null references users (id),
type smallint not null,
token varchar(80) not null,
primary key (user_id, type)
);
insert into schema_version values (2);
}
);
}
my @migrations = (
# v0 -> v1
sub {
my ($dbh) = @_;
return $dbh->do(
qq{
alter table user_actions
add column edited smallint;
drop table if exists monthly_stats;
create table journey_stats (
user_id integer not null references users (id),
year smallint not null,
month smallint not null,
data jsonb not null,
primary key (user_id, year, month)
);
update schema_version set version = 1;
}
);
},
# v1 -> v2
sub {
my ($dbh) = @_;
return $dbh->do(
qq{
update user_actions set edited = 0;
alter table user_actions
alter column edited set not null;
update schema_version set version = 2;
}
);
},
);
sub run {
my ( $self, $command ) = @_;
my $exit_status = 0;
my $dbh = $self->app->dbh;
if ( $command eq 'setup' ) {
$dbh->begin_work;
if ( initialize_db($dbh) ) {
$dbh->commit;
}
else {
$dbh->rollback;
$exit_status = 1;
}
}
elsif ( $command eq 'migrate' ) {
$dbh->begin_work;
my $schema_version = get_schema_version($dbh);
say "Found travelynx schema v${schema_version}";
if ( $schema_version == @migrations ) {
say "Database layout is up-to-date";
}
for my $i ( $schema_version .. $#migrations ) {
printf( "Updating to v%d ...\n", $i + 1 );
if ( not $migrations[$i]($dbh) ) {
say "Aborting migration; rollback to v${schema_version}";
$dbh->rollback;
$exit_status = 1;
last;
}
}
if ( get_schema_version($dbh) == @migrations ) {
$dbh->commit;
}
}
elsif ( $command eq 'has-current-schema' ) {
if ( get_schema_version($dbh) == @migrations ) {
say "yes";
}
else {
say "no";
$exit_status = 1;
}
}
else {
$self->help;
}
$dbh->disconnect;
exit($exit_status);
}
1;
__END__
=head1 SYNOPSIS
Usage: index.pl database <setup|migrate|has-current-schema>
Upgrades the database layout to the latest schema.
Recommended workflow:
> systemctl stop travelynx
> TRAVELYNX_DB_HOST=... TRAVELYNX_DB_NAME=... TRAVELYNX_DB_USER=... \
TRAVELYNX_DB_PASSWORD=... perl index.pl migrate
> systemctl start travelynx
|
