Check for unapplied migrations on startup

Closes #1328
This commit is contained in:
rinpatch 2020-01-16 19:01:31 +03:00
parent 205e73058d
commit dc0498ab2b
4 changed files with 80 additions and 0 deletions

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@ -10,6 +10,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
- **Breaking**: MDII uploader
### Changed
- **Breaking:** Pleroma won't start if it detects unapplied migrations
- **Breaking:** attachments are removed along with statuses when there are no other references to it
- **Breaking:** Elixir >=1.8 is now required (was >= 1.7)
- **Breaking:** attachment links (`config :pleroma, :instance, no_attachment_links` and `config :pleroma, Pleroma.Upload, link_name`) disabled by default

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@ -33,6 +33,7 @@ defmodule Pleroma.Application do
def start(_type, _args) do
Pleroma.HTML.compile_scrubbers()
Pleroma.Config.DeprecationWarnings.warn()
Pleroma.Repo.check_migrations_applied!()
setup_instrumenters()
load_custom_modules()

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@ -8,6 +8,8 @@ defmodule Pleroma.Repo do
adapter: Ecto.Adapters.Postgres,
migration_timestamps: [type: :naive_datetime_usec]
require Logger
defmodule Instrumenter do
use Prometheus.EctoInstrumenter
end
@ -47,4 +49,37 @@ defmodule Pleroma.Repo do
_ -> {:error, :not_found}
end
end
def check_migrations_applied!() do
unless Pleroma.Config.get(
[:i_am_aware_this_may_cause_data_loss, :disable_migration_check],
false
) do
Ecto.Migrator.with_repo(__MODULE__, fn repo ->
down_migrations =
Ecto.Migrator.migrations(repo)
|> Enum.reject(fn
{:up, _, _} -> true
{:down, _, _} -> false
end)
if length(down_migrations) > 0 do
down_migrations_text =
Enum.map(down_migrations, fn {:down, id, name} -> "- #{name} (#{id})\n" end)
Logger.error(
"The following migrations were not applied:\n#{down_migrations_text}If you want to start Pleroma anyway, set\nconfig :pleroma, :i_am_aware_this_may_cause_data_loss, disable_migration_check: true"
)
raise Pleroma.Repo.UnappliedMigrationsError
end
end)
else
:ok
end
end
end
defmodule Pleroma.Repo.UnappliedMigrationsError do
defexception message: "Unapplied Migrations detected"
end

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@ -4,7 +4,10 @@
defmodule Pleroma.RepoTest do
use Pleroma.DataCase
import ExUnit.CaptureLog
import Pleroma.Factory
import Mock
alias Pleroma.User
describe "find_resource/1" do
@ -46,4 +49,44 @@ defmodule Pleroma.RepoTest do
assert Repo.get_assoc(token, :user) == {:error, :not_found}
end
end
describe "check_migrations_applied!" do
setup_with_mocks([
{Ecto.Migrator, [],
[
with_repo: fn repo, fun -> passthrough([repo, fun]) end,
migrations: fn Pleroma.Repo ->
[
{:up, 20_191_128_153_944, "fix_missing_following_count"},
{:up, 20_191_203_043_610, "create_report_notes"},
{:down, 20_191_220_174_645, "add_scopes_to_pleroma_feo_auth_records"}
]
end
]}
]) do
:ok
end
test "raises if it detects unapplied migrations" do
assert_raise Pleroma.Repo.UnappliedMigrationsError, fn ->
capture_log(&Repo.check_migrations_applied!/0)
end
end
test "doesn't do anything if disabled" do
disable_migration_check =
Pleroma.Config.get([:i_am_aware_this_may_cause_data_loss, :disable_migration_check])
Pleroma.Config.put([:i_am_aware_this_may_cause_data_loss, :disable_migration_check], true)
on_exit(fn ->
Pleroma.Config.put(
[:i_am_aware_this_may_cause_data_loss, :disable_migration_check],
disable_migration_check
)
end)
assert :ok == Repo.check_migrations_applied!()
end
end
end