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dbprune: allow splitting array and single activity prunes
The former is typically just a few reports; it doesn't make sense to rerun it over and over again in batched prunes or if a full prune OOMed.
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@ -80,6 +80,8 @@ when all orphaned activities have been deleted.
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### Options
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- `--limit n` - Only delete up to `n` activities in each query making up this job, i.e. if this job runs two queries at most `2n` activities will be deleted. Running this task repeatedly in limited batches can help maintain the instance’s responsiveness while still freeing up some space.
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- `--no-singles` - Do not delete activites referencing single objects
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- `--no-arrays` - Do not delete activites referencing an array of objects
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## Create a conversation for all existing DMs
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@ -28,28 +28,15 @@ defmodule Mix.Tasks.Pleroma.Database do
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end
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end
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def prune_orphaned_activities(limit \\ 0) when is_number(limit) do
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limit_arg =
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if limit > 0 do
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"LIMIT #{limit}"
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else
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""
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end
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defp limit_statement(limit) when is_number(limit) do
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if limit > 0 do
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"LIMIT #{limit}"
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else
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""
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end
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end
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# Activities can either refer to a single object id, and array of object ids
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# or contain an inlined object (at least after going through our normalisation)
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#
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# Flag is the only type we support with an array (and always has arrays).
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# Update the only one with inlined objects.
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#
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# We already regularly purge old Delete, Undo, Update and Remove and if
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# rejected Follow requests anyway; no need to explicitly deal with those here.
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#
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# Since there’s an index on types and there are typically only few Flag
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# activites, it’s _much_ faster to utilise the index. To avoid accidentally
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# deleting useful activities should more types be added, keep typeof for singles.
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# Prune activities who link to a single object
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defp prune_orphaned_activities_singles(limit) do
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%{:num_rows => del_single} =
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"""
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delete from public.activities
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@ -63,14 +50,16 @@ defmodule Mix.Tasks.Pleroma.Database do
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and o.id is null
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and a2.id is null
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and u.id is null
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#{limit_arg}
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#{limit_statement(limit)}
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)
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"""
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|> Repo.query!([], timeout: :infinity)
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Logger.info("Prune activity singles: deleted #{del_single} rows...")
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del_single
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end
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# Prune activities who link to an array of objects
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defp prune_orphaned_activities_array(limit) do
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%{:num_rows => del_array} =
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"""
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delete from public.activities
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@ -85,12 +74,44 @@ defmodule Mix.Tasks.Pleroma.Database do
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having max(o.data ->> 'id') is null
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and max(a2.data ->> 'id') is null
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and max(u.ap_id) is null
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#{limit_arg}
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#{limit_statement(limit)}
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)
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"""
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|> Repo.query!([], timeout: :infinity)
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Logger.info("Prune activity arrays: deleted #{del_array} rows...")
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del_array
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end
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def prune_orphaned_activities(limit \\ 0, opts \\ []) when is_number(limit) do
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# Activities can either refer to a single object id, and array of object ids
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# or contain an inlined object (at least after going through our normalisation)
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#
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# Flag is the only type we support with an array (and always has arrays).
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# Update the only one with inlined objects.
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#
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# We already regularly purge old Delete, Undo, Update and Remove and if
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# rejected Follow requests anyway; no need to explicitly deal with those here.
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#
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# Since there’s an index on types and there are typically only few Flag
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# activites, it’s _much_ faster to utilise the index. To avoid accidentally
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# deleting useful activities should more types be added, keep typeof for singles.
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# Prune activities who link to a single object
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del_single =
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if Keyword.get(opts, :singles, true) do
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prune_orphaned_activities_singles(limit)
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else
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0
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end
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# Prune activities who link to an array of objects
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del_array =
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if Keyword.get(opts, :arrays, true) do
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prune_orphaned_activities_array(limit)
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else
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0
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end
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del_single + del_array
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end
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@ -142,13 +163,15 @@ defmodule Mix.Tasks.Pleroma.Database do
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OptionParser.parse(
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args,
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strict: [
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limit: :integer
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limit: :integer,
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singles: :boolean,
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arrays: :boolean
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]
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)
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start_pleroma()
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limit = Keyword.get(options, :limit, 0)
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{limit, options} = Keyword.pop(options, :limit, 0)
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log_message = "Pruning orphaned activities"
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@ -161,7 +184,7 @@ defmodule Mix.Tasks.Pleroma.Database do
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Logger.info(log_message)
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deleted = prune_orphaned_activities(limit)
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deleted = prune_orphaned_activities(limit, options)
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Logger.info("Deleted #{deleted} rows")
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end
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