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1 | package DBIx::Class::DeploymentHandler; |
2 | |
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3 | # ABSTRACT: Extensible DBIx::Class deployment |
4 | |
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5 | use Moose; |
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6 | |
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7 | extends 'DBIx::Class::DeploymentHandler::Dad'; |
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8 | # a single with would be better, but we can't do that |
9 | # see: http://rt.cpan.org/Public/Bug/Display.html?id=46347 |
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10 | with 'DBIx::Class::DeploymentHandler::WithApplicatorDumple' => { |
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11 | interface_role => 'DBIx::Class::DeploymentHandler::HandlesDeploy', |
12 | class_name => 'DBIx::Class::DeploymentHandler::DeployMethod::SQL::Translator', |
13 | delegate_name => 'deploy_method', |
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14 | attributes_to_assume => [qw(schema schema_version)], |
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15 | attributes_to_copy => [qw( |
16 | ignore_ddl databases script_directory sql_translator_args force_overwrite |
17 | )], |
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18 | }, |
19 | 'DBIx::Class::DeploymentHandler::WithApplicatorDumple' => { |
20 | interface_role => 'DBIx::Class::DeploymentHandler::HandlesVersioning', |
21 | class_name => 'DBIx::Class::DeploymentHandler::VersionHandler::Monotonic', |
22 | delegate_name => 'version_handler', |
23 | attributes_to_assume => [qw( database_version schema_version to_version )], |
24 | }, |
25 | 'DBIx::Class::DeploymentHandler::WithApplicatorDumple' => { |
26 | interface_role => 'DBIx::Class::DeploymentHandler::HandlesVersionStorage', |
27 | class_name => 'DBIx::Class::DeploymentHandler::VersionStorage::Standard', |
28 | delegate_name => 'version_storage', |
29 | attributes_to_assume => ['schema'], |
30 | }; |
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31 | with 'DBIx::Class::DeploymentHandler::WithReasonableDefaults'; |
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32 | |
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33 | sub prepare_version_storage_install { |
34 | my $self = shift; |
35 | |
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36 | $self->prepare_resultsource_install({ |
37 | result_source => $self->version_storage->version_rs->result_source |
38 | }); |
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39 | } |
40 | |
41 | sub install_version_storage { |
42 | my $self = shift; |
43 | |
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44 | my $version = (shift||{})->{version} || $self->schema_version; |
45 | |
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46 | $self->install_resultsource({ |
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47 | result_source => $self->version_storage->version_rs->result_source, |
48 | version => $version, |
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49 | }); |
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50 | } |
51 | |
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52 | sub prepare_install { |
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53 | $_[0]->prepare_deploy; |
54 | $_[0]->prepare_version_storage_install; |
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55 | } |
56 | |
53de57ed |
57 | # the following is just a hack so that ->version_storage |
58 | # won't be lazy |
59 | sub BUILD { $_[0]->version_storage } |
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60 | __PACKAGE__->meta->make_immutable; |
61 | |
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62 | 1; |
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63 | |
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64 | #vim: ts=2 sw=2 expandtab |
65 | |
66 | __END__ |
67 | |
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68 | =head1 SYNOPSIS |
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69 | |
70 | use aliased 'DBIx::Class::DeploymentHandler' => 'DH'; |
71 | my $s = My::Schema->connect(...); |
72 | |
73 | my $dh = DH->new({ |
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74 | schema => $s, |
75 | databases => 'SQLite', |
76 | sql_translator_args => { add_drop_table => 0 }, |
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77 | }); |
78 | |
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79 | $dh->prepare_install; |
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80 | |
81 | $dh->install; |
82 | |
83 | or for upgrades: |
84 | |
85 | use aliased 'DBIx::Class::DeploymentHandler' => 'DH'; |
86 | my $s = My::Schema->connect(...); |
87 | |
88 | my $dh = DH->new({ |
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89 | schema => $s, |
90 | databases => 'SQLite', |
91 | sql_translator_args => { add_drop_table => 0 }, |
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92 | }); |
93 | |
94 | $dh->prepare_upgrade(1, 2); |
95 | |
96 | $dh->upgrade; |
97 | |
98 | =head1 DESCRIPTION |
99 | |
100 | C<DBIx::Class::DeploymentHandler> is, as it's name suggests, a tool for |
101 | deploying and upgrading databases with L<DBIx::Class>. It is designed to be |
102 | much more flexible than L<DBIx::Class::Schema::Versioned>, hence the use of |
103 | L<Moose> and lots of roles. |
104 | |
105 | C<DBIx::Class::DeploymentHandler> itself is just a recommended set of roles |
106 | that we think will not only work well for everyone, but will also yeild the |
107 | best overall mileage. Each role it uses has it's own nuances and |
108 | documentation, so I won't describe all of them here, but here are a few of the |
109 | major benefits over how L<DBIx::Class::Schema::Versioned> worked (and |
110 | L<DBIx::Class::DeploymentHandler::Deprecated> tries to maintain compatibility |
111 | with): |
112 | |
113 | =over |
114 | |
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115 | =item * |
116 | |
117 | Downgrades in addition to upgrades. |
118 | |
119 | =item * |
120 | |
121 | Multiple sql files files per upgrade/downgrade/install. |
122 | |
123 | =item * |
124 | |
125 | Perl scripts allowed for upgrade/downgrade/install. |
126 | |
127 | =item * |
128 | |
129 | Just one set of files needed for upgrade, unlike before where one might need |
130 | to generate C<factorial(scalar @versions)>, which is just silly. |
131 | |
132 | =item * |
133 | |
134 | And much, much more! |
135 | |
136 | =back |
137 | |
138 | That's really just a taste of some of the differences. Check out each role for |
139 | all the details. |
140 | |
141 | =head1 WHERE IS ALL THE DOC?! |
142 | |
143 | C<DBIx::Class::DeploymentHandler> extends |
144 | L<DBIx::Class::DeploymentHandler::Dad>, so that's probably the first place to |
145 | look when you are trying to figure out how everything works. |
146 | |
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147 | Next would be to look at all the pieces that fill in the blanks that |
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148 | L<DBIx::Class::DeploymentHandler::Dad> expects to be filled. They would be |
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149 | L<DBIx::Class::DeploymentHandler::DeployMethod::SQL::Translator>, |
150 | L<DBIx::Class::DeploymentHandler::VersionHandler::Monotonic>, |
151 | L<DBIx::Class::DeploymentHandler::VersionStorage::Standard>, and |
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152 | L<DBIx::Class::DeploymentHandler::WithReasonableDefaults>. |
153 | |
154 | =method prepare_version_storage_install |
155 | |
156 | $dh->prepare_version_storage_install |
157 | |
158 | Creates the needed C<.sql> file to install the version storage and not the rest |
159 | of the tables |
160 | |
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161 | =method prepare_install |
162 | |
163 | $dh->prepare_install |
164 | |
165 | First prepare all the tables to be installed and the prepare just the version |
166 | storage |
167 | |
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168 | =method install_version_storage |
169 | |
170 | $dh->install_version_storage |
171 | |
172 | Install the version storage and not the rest of the tables |
173 | |
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174 | =head1 THIS SUCKS |
175 | |
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176 | You started your project and weren't using C<DBIx::Class::DeploymentHandler>? |
177 | Lucky for you I had you in mind when I wrote this doc. |
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178 | |
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179 | First off, you'll want to just install the C<version_storage>: |
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180 | |
181 | my $s = My::Schema->connect(...); |
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182 | my $dh = DBIx::Class::DeploymentHandler->({ schema => $s }); |
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183 | |
184 | $dh->prepare_version_storage_install; |
185 | $dh->install_version_storage; |
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186 | |
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187 | Then set your database version: |
188 | |
189 | $dh->add_database_version({ version => $s->version }); |
190 | |
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191 | Now you should be able to use C<DBIx::Class::DeploymentHandler> like normal! |
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192 | |
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193 | =head1 LOGGING |
194 | |
195 | This is a complex tool, and because of that sometimes you'll want to see |
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196 | what exactly is happening. The best way to do that is to use the built in |
197 | logging functionality. It the standard six log levels; C<fatal>, C<error>, |
198 | C<warn>, C<info>, C<debug>, and C<trace>. Most of those are pretty self |
199 | explanatory. Generally a safe level to see what all is going on is debug, |
200 | which will give you everything except for the exact SQL being run. |
201 | |
202 | To enable the various logging levels all you need to do is set an environment |
203 | variables: C<DBICDH_FATAL>, C<DBICDH_ERROR>, C<DBICDH_WARN>, C<DBICDH_INFO>, |
204 | C<DBICDH_DEBUG>, and C<DBICDH_TRACE>. Each level can be set on it's own, |
205 | but the default is the first three on and the last three off, and the levels |
206 | cascade, so if you turn on trace the rest will turn on automatically. |
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207 | |
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208 | =head1 DONATIONS |
209 | |
210 | If you'd like to thank me for the work I've done on this module, don't give me |
211 | a donation. I spend a lot of free time creating free software, but I do it |
212 | because I love it. |
213 | |
214 | Instead, consider donating to someone who might actually need it. Obviously |
215 | you should do research when donating to a charity, so don't just take my word |
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216 | on this. I like Children's Survival Fund: |
217 | L<http://www.childrenssurvivalfund.org>, but there are a host of other |
218 | charities that can do much more good than I will with your money. |