1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
#!/usr/bin/env perl
use strict;
use warnings;
use 5.020;
use DateTime;
use DBI;
my $dbname = $ENV{TRAVELYNX_DB_FILE} // 'travelynx.sqlite';
my $dbh = DBI->connect( "dbi:SQLite:dbname=${dbname}", q{}, q{} );
my $has_version_query = $dbh->prepare(
qq{
select name from sqlite_master
where type = 'table' and name = 'schema_version';
}
);
sub get_schema_version {
$has_version_query->execute();
my $rows = $has_version_query->fetchall_arrayref;
if ( @{$rows} == 1 ) {
my $get_version_query = $dbh->prepare(
qq{
select version from schema_version;
}
);
$get_version_query->execute();
my $rows = $get_version_query->fetchall_arrayref;
if ( @{$rows} == 0 ) {
return -1;
}
return $rows->[0][0];
}
return 0;
}
my @migrations = (
# v0 -> v1
sub {
$dbh->begin_work;
$dbh->do(
qq{
create table schema_version (
version integer primary key
);
}
);
$dbh->do(
qq{
insert into schema_version (version) values (1);
}
);
$dbh->do(
qq{
create table new_users (
id integer primary key,
name char(64) not null unique,
status int not null,
is_public bool not null,
email char(256),
password text,
registered_at datetime not null,
last_login datetime not null,
deletion_requested datetime
);
}
);
my $get_users_query = $dbh->prepare(
qq{
select * from users;
}
);
my $add_user_query = $dbh->prepare(
qq{
insert into new_users
(id, name, status, is_public, registered_at, last_login)
values
(?, ?, ?, ?, ?, ?);
}
);
$get_users_query->execute;
while ( my @row = $get_users_query->fetchrow_array ) {
my ( $id, $name ) = @row;
my $now = DateTime->now( time_zone => 'Europe/Berlin' )->epoch;
$add_user_query->execute( $id, $name, 0, 0, $now, $now );
}
$dbh->do(
qq{
drop table users;
}
);
$dbh->do(
qq{
alter table new_users rename to users;
}
);
$dbh->commit;
},
# v1 -> v2
sub {
$dbh->begin_work;
$dbh->do(
qq{
update schema_version set version = 2;
}
);
$dbh->do(
qq{
create table new_users (
id integer primary key,
name char(64) not null unique,
status int not null,
public_level int not null,
email char(256),
token char(80),
password text,
registered_at datetime not null,
last_login datetime not null,
deletion_requested datetime
);
}
);
my $get_users_query = $dbh->prepare(
qq{
select * from users;
}
);
# At this point, some "users" fields were never used -> skip those
# during migration.
my $add_user_query = $dbh->prepare(
qq{
insert into new_users
(id, name, status, public_level, registered_at, last_login)
values
(?, ?, ?, ?, ?, ?);
}
);
$get_users_query->execute;
while ( my @row = $get_users_query->fetchrow_array ) {
my (
$id, $name, $status,
$is_public, $email, $password,
$reg_at, $last_login, $del_requested
) = @row;
$add_user_query->execute( $id, $name, $status, $is_public, $reg_at,
$last_login );
}
$dbh->do(
qq{
drop table users;
}
);
$dbh->do(
qq{
alter table new_users rename to users;
}
);
$dbh->do(
qq{
create table pending_mails (
email char(256) not null primary key,
num_tries int not null,
last_try datetime not null
);
}
);
$dbh->commit;
},
# v2 -> v3
sub {
$dbh->begin_work;
$dbh->do(
qq{
update schema_version set version = 3;
}
);
$dbh->do(
qq{
create table tokens (
user_id integer not null,
type integer not null,
token char(80) not null,
primary key (user_id, type)
);
}
);
$dbh->commit;
},
);
my $schema_version = get_schema_version();
say "Found travelynx schema v${schema_version}";
if ( $schema_version == @migrations ) {
say "Database schema is up-to-date";
}
for my $i ( $schema_version .. $#migrations ) {
printf( "Updating to v%d\n", $i + 1 );
$migrations[$i]();
}
$dbh->disconnect;
|
