50 lines
1.5 KiB
Ruby
50 lines
1.5 KiB
Ruby
# See http://doc.gitlab.com/ce/development/migration_style_guide.html
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# for more information on how to write migrations for GitLab.
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class RemoveOrphanedRoutes < ActiveRecord::Migration[4.2]
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include Gitlab::Database::MigrationHelpers
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DOWNTIME = false
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disable_ddl_transaction!
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class Route < ActiveRecord::Base
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self.table_name = 'routes'
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include EachBatch
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def self.orphaned_namespace_routes
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where(source_type: 'Namespace')
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.where('NOT EXISTS ( SELECT 1 FROM namespaces WHERE namespaces.id = routes.source_id )')
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end
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def self.orphaned_project_routes
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where(source_type: 'Project')
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.where('NOT EXISTS ( SELECT 1 FROM projects WHERE projects.id = routes.source_id )')
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end
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end
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def up
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# Some of these queries can take up to 10 seconds to run on GitLab.com,
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# which is pretty close to our 15 second statement timeout. To ensure a
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# smooth deployment procedure we disable the statement timeouts for this
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# migration, just in case.
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disable_statement_timeout do
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# On GitLab.com there are around 4000 orphaned project routes, and around
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# 150 orphaned namespace routes.
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[
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Route.orphaned_project_routes,
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Route.orphaned_namespace_routes
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].each do |relation|
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relation.each_batch(of: 1_000) do |batch|
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batch.delete_all
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end
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end
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end
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end
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def down
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# There is no way to restore orphaned routes, and this doesn't make any
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# sense anyway.
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end
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end
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