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[#3213] Improved database.transfer_hashtags mix task: proper rollback, speedup.

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This commit is contained in:
Ivan Tashkinov 2020-12-30 14:35:19 +03:00
parent 14fae94c0e
commit a25c1e8ec0
1 changed files with 25 additions and 21 deletions
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46
lib/mix/tasks/pleroma/database.ex
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@ -137,6 +137,8 @@ defmodule Mix.Tasks.Pleroma.Database do
start_pleroma()
Logger.info("Starting transferring object embedded hashtags to `hashtags` table...")
from(
object in Object,
left_join: hashtag in assoc(object, :hashtags),
@ -144,21 +146,12 @@ defmodule Mix.Tasks.Pleroma.Database do
where: fragment("(?)->>'tag' != '[]'", object.data),
select: %{
id: object.id,
inserted_at: object.inserted_at,
tag: fragment("(?)->>'tag'", object.data)
},
order_by: [desc: object.id]
}
)
|> Pleroma.Repo.chunk_stream(100, :batches)
|> Stream.each(fn objects ->
chunk_start = List.first(objects)
chunk_end = List.last(objects)
Logger.info(
"transfer_hashtags: " <>
"#{chunk_start.id} (#{chunk_start.inserted_at}) -- " <>
"#{chunk_end.id} (#{chunk_end.inserted_at})"
)
Logger.info("Processing #{length(objects)} objects...")
Enum.map(
objects,
@ -168,28 +161,39 @@ defmodule Mix.Tasks.Pleroma.Database do
|> Jason.decode!()
|> Enum.filter(&is_bitstring(&1))
with {:ok, hashtag_records} <- Hashtag.get_or_create_by_names(hashtags) do
Repo.transaction(fn ->
Repo.transaction(fn ->
with {:ok, hashtag_records} <- Hashtag.get_or_create_by_names(hashtags) do
for hashtag_record <- hashtag_records do
with {:error, _} <-
with {:ok, _} <-
Ecto.Adapters.SQL.query(
Repo,
"insert into hashtags_objects(hashtag_id, object_id) values " <>
"(#{hashtag_record.id}, #{object.id});"
) do
Logger.warn(
"ERROR: could not link object #{object.id} and hashtag #{hashtag_record.id}"
)
:noop
else
{:error, e} ->
error =
"ERROR: could not link object #{object.id} and hashtag " <>
"#{hashtag_record.id}: #{inspect(e)}"
Logger.error(error)
Repo.rollback(error)
end
end
end)
else
e -> Logger.warn("ERROR: could not process object #{object.id}: #{inspect(e)}")
end
else
e ->
error = "ERROR: could not create hashtags for object #{object.id}: #{inspect(e)}"
Logger.error(error)
Repo.rollback(error)
end
end)
end
)
end)
|> Stream.run()
Logger.info("Done transferring hashtags. Please check logs to ensure no errors.")
end
def run(["vacuum", args]) do