I’m currently exploring Phoenix and figured I’d try out setting up Oban to get an idea of how that works. I followed the instructions on the GitHub/Hexdocs page, but I’m running into an error during the migration for the setup, which I seem to be the only one getting, because Googling it hasn’t yielded me any results so far.
So, to summarize, I took the steps as listed in the docs.
Add the dependency:
def deps do
[
{:oban, "~> 2.4.3"}
]
end
Get the dependencies:
mix deps.get
Generate the migration:
mix ecto.gen.migration add_oban_jobs_table
Set up the migration:
defmodule MovieDatabase.Repo.Migrations.AddObanJobsTable do
use Ecto.Migration
def up do
Oban.Migrations.up()
end
def down do
Oban.Migrations.down(version: 1)
end
end
Run the migration, which is where the error occurs:
mix ecto.migrate
This is the trace:
09:43:13.136 [info] == Running 20210213083101 MovieDatabase.Repo.Migrations.AddObanJobsTable.up/0 forward
09:43:13.152 [debug] QUERY OK db=1.5ms
SELECT description
FROM pg_class
LEFT JOIN pg_description ON pg_description.objoid = pg_class.oid
LEFT JOIN pg_namespace ON pg_namespace.oid = pg_class.relnamespace
WHERE pg_class.relname = 'oban_jobs'
AND pg_namespace.nspname = 'public'
[]
** (UndefinedFunctionError) function Oban.Migrations.V01.up/1 is undefined (module Oban.Migrations.V01 is not available)
Oban.Migrations.V01.up("public")
(oban 2.4.3) lib/oban/migrations.ex:157: anonymous fn/4 in Oban.Migrations.change/3
(elixir 1.11.2) lib/enum.ex:3449: Enum.reduce_range_inc/4
(oban 2.4.3) lib/oban/migrations.ex:152: Oban.Migrations.change/3
(ecto_sql 3.5.3) lib/ecto/migration/runner.ex:279: Ecto.Migration.Runner.perform_operation/3
(stdlib 3.14) timer.erl:166: :timer.tc/1
(ecto_sql 3.5.3) lib/ecto/migration/runner.ex:25: Ecto.Migration.Runner.run/8
(ecto_sql 3.5.3) lib/ecto/migrator.ex:349: Ecto.Migrator.attempt/8
(ecto_sql 3.5.3) lib/ecto/migrator.ex:249: anonymous fn/5 in Ecto.Migrator.do_up/5
(ecto_sql 3.5.3) lib/ecto/migrator.ex:331: anonymous fn/3 in Ecto.Migrator.run_maybe_in_transaction/6
(ecto_sql 3.5.3) lib/ecto/adapters/sql.ex:1027: anonymous fn/3 in Ecto.Adapters.SQL.checkout_or_transaction/4
(db_connection 2.3.1) lib/db_connection.ex:1444: DBConnection.run_transaction/4
(ecto_sql 3.5.3) lib/ecto/migrator.ex:330: Ecto.Migrator.run_maybe_in_transaction/6
(elixir 1.11.2) lib/task/supervised.ex:90: Task.Supervised.invoke_mfa/2
(elixir 1.11.2) lib/task/supervised.ex:35: Task.Supervised.reply/5
(stdlib 3.14) proc_lib.erl:226: :proc_lib.init_p_do_apply/3
Now, I may be missing something really obvious here, but since Google isn’t giving me anything useful and I’m unsure what to do with this error, I thought I’d ask.
The GitHub page does mention the following:
Note About Releases
If you are using releases you may see Postgrex errors logged during your initial deploy (or any deploy requiring an Oban migration). The errors are only temporary! After the migration has completed each queue will start producing jobs normally.
However, I’m not (as far as I’m aware) using Releases, so I figured this is not the issue (it’s also not a Postgrex error).
