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Split legacy migration from schema creation
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friflaj
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Aug 3, 2010
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| class MigrateLegacy < ActiveRecord::Migration | ||
| def self.up | ||
| begin | ||
| execute "select count(*) from backlogs" | ||
| legacy = true | ||
| rescue | ||
| legacy = false | ||
| end | ||
|
|
||
| if legacy | ||
| if Story.trackers.nil? || Story.trackers.size == 0 || Task.tracker.nil? | ||
| raise "Please configure the Backlogs Story and Task trackers before migrating. | ||
| You do this by starting Redmine and going to \"Administration -> Plugins -> Redmine Scrum Plugin -> Configure\" | ||
| and setting up the Task tracker and one or more Story trackers. | ||
| You might have to go to \"Administration -> Trackers\" first | ||
| and create new trackers for this purpose. After doing this, stop | ||
| redmine and re-run this migration." | ||
| end | ||
|
|
||
| task_tracker = Task.tracker | ||
| story_tracker = Story.trackers[0] | ||
|
|
||
| Story.reset_column_information | ||
| Issue.reset_column_information | ||
| Task.reset_column_information | ||
|
|
||
| # close existing transactions and turn on autocommit | ||
| ActiveRecord::Base.connection.commit_db_transaction | ||
|
|
||
| say_with_time "Migrating Backlogs data..." do | ||
| bottom = 0 | ||
| execute("select coalesce(max(position), 0) from items").each { |row| | ||
| bottom = row[0].to_i | ||
| } | ||
| bottom += 1 | ||
|
|
||
| connection = ActiveRecord::Base.connection | ||
|
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||
| stories = execute " | ||
| select story.issue_id, story.points, sprint.version_id | ||
| from items story | ||
| join issues on issues.id = story.issue_id | ||
| left join items parent on parent.id = story.parent_id and story.parent_id <> 0 | ||
| left join backlogs sprint on story.backlog_id = sprint.id and sprint.id <> 0 | ||
| where parent.id is null | ||
| order by coalesce(story.position, #{bottom}) desc, story.created_at desc" | ||
|
|
||
| stories.each { |row| | ||
| id, points, sprint = row | ||
|
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||
| story = Story.find(id) | ||
|
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||
| story.update_attributes( | ||
| :tracker_id => story_tracker, | ||
| :fixed_version_id => sprint, | ||
| :story_points => points | ||
| ) | ||
|
|
||
| # because we're inserting the stories last-first, this | ||
| # position gets shifted down 1 spot each time, yielding a | ||
| # neatly compacted position list | ||
| story.insert_at 1 | ||
| } | ||
|
|
||
| tasks = execute " | ||
| select task.issue_id, sprint.version_id, parent.issue_id | ||
| from items task | ||
| join issues task_issue on task_issue.id = task.issue_id | ||
| join items parent on parent.id = task.parent_id and task.parent_id <> 0 | ||
| join issues parent_issue on parent_issue.id = parent.issue_id | ||
| left join backlogs sprint on task.backlog_id = sprint.id and sprint.id <> 0 | ||
| order by coalesce(task.position, #{bottom}) desc, task.created_at desc" | ||
|
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||
| tasks.each { |row| | ||
| id, sprint, parent_id = row | ||
|
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| task = Task.find(id) | ||
|
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||
| task.update_attributes( | ||
| :tracker_id => task_tracker, | ||
| :fixed_version_id => sprint | ||
| ) | ||
|
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||
| # this must be done before insert_at, because task position | ||
| # (see below) is scoped to the parent issue | ||
| task.move_to_child_of parent_id | ||
|
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||
| # because we're inserting the tasks last-first, this | ||
| # position gets shifted down 1 spot each time, yielding a | ||
| # neatly compacted position list | ||
| task.insert_at 1 | ||
| } | ||
|
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||
| res = execute "select version_id, start_date, is_closed from backlogs" | ||
| res.each { |row| | ||
| version, start_date, is_closed = row | ||
| status = connection.quote(is_closed ? 'closed' : 'open') | ||
| version = connection.quote(version == 0 ? nil : version) | ||
| start_date = connection.quote(start_date) | ||
|
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||
| execute "update versions set status = #{status}, sprint_start_date = #{start_date} where id = #{version}" | ||
| } | ||
| end | ||
|
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||
| execute %{ | ||
| insert into burndown_days (version_id, points_committed, points_accepted, created_at) | ||
| select version_id, scope, done, backlog_chart_data.created_at | ||
| from backlogs | ||
| join backlog_chart_data on backlogs.id = backlog_id | ||
| } | ||
|
|
||
| drop_table 'backlogs' | ||
| drop_table 'items' | ||
| end | ||
|
|
||
| end | ||
|
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||
| def self.down | ||
| #pass | ||
| end | ||
| end |
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