Replace embedded object migration with a mix task

This commit is contained in:
rinpatch 2019-04-18 23:34:01 +03:00
parent 9238dccac1
commit 099f89367e
2 changed files with 45 additions and 10 deletions

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# Pleroma: A lightweight social networking server
# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Mix.Tasks.Pleroma.Database do
alias Mix.Tasks.Pleroma.Common
use Mix.Task
@shortdoc "A collection of database related tasks"
@moduledoc """
A collection of database related tasks
## Replace embedded objects with their references
Replaces embedded objects with references to them in the `objects` table. Only needs to be ran once. The reason why this is not a migration is because it could significantly increase the database size after being ran, however after this `VACUUM FULL` will be able to reclaim about 20% (really depends on what is in the database, your mileage may vary) of the db size before the migration.
mix pleroma.database remove_embedded_objects
Options:
- `--vacuum` - run `VACUUM FULL` after the embedded objects are replaced with their references
"""
def run(["remove_embedded_objects" | args]) do
{options, [], []} =
OptionParser.parse(
args,
strict: [
vacuum: :boolean
]
)
Common.start_pleroma()
Ecto.Adapters.SQL.query!(
Pleroma.Repo,
"update activities set data = jsonb_set(data, '{object}'::text[], data->'object'->'id') where data->'object'->>'id' is not null;"
)
if Keyword.get(options, :vacuum) do
Ecto.Adapters.SQL.query!(
Pleroma.Repo,
"vacuum full;"
)
end
end
end

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defmodule Pleroma.Repo.Migrations.RemoveEmbededObjects do
use Ecto.Migration
# TODO: bench on a real DB and add clippy if it takes too long
def change do
execute """
update activities set data = jsonb_set(data, '{object}'::text[], data->'object'->'id') where data->>'type' = 'Create' and data->'object'->>'id' is not null;
"""
end
end