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extract helper fn

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This commit is contained in:
Felix Ableitner 2024-05-08 12:40:14 +02:00
parent eab6dbbe06
commit 7902138df2
1 changed files with 118 additions and 166 deletions
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284
crates/apub/src/api/user_settings_backup.rs
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@ -3,8 +3,8 @@ use crate::objects::{
community::ApubCommunity,
person::ApubPerson,
post::ApubPost,
};
use activitypub_federation::{config::Data, fetch::object_id::ObjectId};
};use itertools::Itertools;
use activitypub_federation::{config::Data, fetch::object_id::ObjectId, traits::Object};
use actix_web::web::Json;
use futures::{future::try_join_all, StreamExt};
use lemmy_api_common::{context::LemmyContext, SuccessResponse};
@ -30,8 +30,11 @@ use lemmy_utils::{
spawn_try_task,
};
use serde::{Deserialize, Serialize};
use std::future::Future;
use tracing::info;
const PARALLELISM: usize = 10;
/// Backup of user data. This struct should never be changed so that the data can be used as a
/// long-term backup in case the instance goes down unexpectedly. All fields are optional to allow
/// importing partial backups.
@ -168,170 +171,88 @@ pub async fn import_settings(
}
spawn_try_task(async move {
const PARALLELISM: usize = 10;
let person_id = local_user_view.person.id;
// These tasks fetch objects from remote instances which might be down.
// TODO: Would be nice if we could send a list of failed items with api response, but then
// the request would likely timeout.
let mut failed_items = vec![];
info!(
"Starting settings backup for {}",
"Starting settings import for {}",
local_user_view.person.name
);
futures::stream::iter(
data
.followed_communities
.clone()
.into_iter()
// reset_request_count works like clone, and is necessary to avoid running into request limit
.map(|f| (f, context.reset_request_count()))
.map(|(followed, context)| async move {
// need to reset outgoing request count to avoid running into limit
let community = followed.dereference(&context).await?;
let form = CommunityFollowerForm {
person_id,
community_id: community.id,
pending: true,
};
CommunityFollower::follow(&mut context.pool(), &form).await?;
LemmyResult::Ok(())
}),
)
.buffer_unordered(PARALLELISM)
.collect::<Vec<_>>()
.await
.into_iter()
.enumerate()
.for_each(|(i, r)| {
if let Err(e) = r {
failed_items.push(data.followed_communities.get(i).map(|u| u.inner().clone()));
info!("Failed to import followed community: {e}");
}
});
futures::stream::iter(
data
.saved_posts
.clone()
.into_iter()
.map(|s| (s, context.reset_request_count()))
.map(|(saved, context)| async move {
let post = saved.dereference(&context).await?;
let form = PostSavedForm {
person_id,
post_id: post.id,
};
PostSaved::save(&mut context.pool(), &form).await?;
LemmyResult::Ok(())
}),
)
.buffer_unordered(PARALLELISM)
.collect::<Vec<_>>()
.await
.into_iter()
.enumerate()
.for_each(|(i, r)| {
if let Err(e) = r {
failed_items.push(data.followed_communities.get(i).map(|u| u.inner().clone()));
info!("Failed to import saved post community: {e}");
}
});
futures::stream::iter(
data
.saved_comments
.clone()
.into_iter()
.map(|s| (s, context.reset_request_count()))
.map(|(saved, context)| async move {
let comment = saved.dereference(&context).await?;
let form = CommentSavedForm {
person_id,
comment_id: comment.id,
};
CommentSaved::save(&mut context.pool(), &form).await?;
LemmyResult::Ok(())
}),
)
.buffer_unordered(PARALLELISM)
.collect::<Vec<_>>()
.await
.into_iter()
.enumerate()
.for_each(|(i, r)| {
if let Err(e) = r {
failed_items.push(data.followed_communities.get(i).map(|u| u.inner().clone()));
info!("Failed to import saved comment community: {e}");
}
});
let failed_items: Vec<_> = failed_items.into_iter().flatten().collect();
info!(
"Finished settings backup for {}, failed items: {:#?}",
local_user_view.person.name, failed_items
);
// These tasks don't connect to any remote instances but only insert directly in the database.
// That means the only error condition are db connection failures, so no extra error handling is
// needed.
futures::stream::iter(
data
.blocked_communities
.clone()
.into_iter()
.map(|s| (s, context.reset_request_count()))
.map(|(blocked, context)| async move {
let community = blocked.dereference(&context).await?;
let form = CommunityBlockForm {
person_id,
community_id: community.id,
};
CommunityBlock::block(&mut context.pool(), &form).await?;
LemmyResult::Ok(())
}),
)
.buffer_unordered(PARALLELISM)
.collect::<Vec<_>>()
.await
.into_iter()
.enumerate()
.for_each(|(i, r)| {
if let Err(e) = r {
//failed_items.push(data.followed_communities.get(i).map(|u| u.inner().clone()));
//info!("Failed to import saved post community: {e}");
}
});
/*
try_join_all(data.blocked_communities.iter().map(|blocked| async {
let context = context.reset_request_count();
// Ignore fetch errors
let community = blocked.dereference(&context).await?;
let form = CommunityBlockForm {
person_id,
community_id: community.id,
};
CommunityBlock::block(&mut context.pool(), &form).await?;
LemmyResult::Ok(())
}))
.await?;
*/
try_join_all(data.blocked_users.iter().map(|blocked| async {
let context = context.reset_request_count();
// Ignore fetch errors
let target = blocked.dereference(&context).await.ok();
if let Some(target) = target {
let form = PersonBlockForm {
let failed_followed_communities = fetch_and_import(
data.followed_communities.clone(),
&context,
|(followed, context)| async move {
let community = followed.dereference(&context).await?;
let form = CommunityFollowerForm {
person_id,
target_id: target.id,
community_id: community.id,
pending: true,
};
PersonBlock::block(&mut context.pool(), &form).await?;
}
LemmyResult::Ok(())
}))
CommunityFollower::follow(&mut context.pool(), &form).await?;
LemmyResult::Ok(())
},
)
.await?;
let failed_saved_posts = fetch_and_import(
data.saved_posts.clone(),
&context,
|(saved, context)| async move {
let post = saved.dereference(&context).await?;
let form = PostSavedForm {
person_id,
post_id: post.id,
};
PostSaved::save(&mut context.pool(), &form).await?;
LemmyResult::Ok(())
},
)
.await?;
let failed_saved_comments = fetch_and_import(
data.saved_comments.clone(),
&context,
|(saved, context)| async move {
let comment = saved.dereference(&context).await?;
let form = CommentSavedForm {
person_id,
comment_id: comment.id,
};
CommentSaved::save(&mut context.pool(), &form).await?;
LemmyResult::Ok(())
},
)
.await?;
let failed_community_blocks = fetch_and_import(
data.blocked_communities.clone(),
&context,
|(blocked, context)| async move {
let community = blocked.dereference(&context).await?;
let form = CommunityBlockForm {
person_id,
community_id: community.id,
};
CommunityBlock::block(&mut context.pool(), &form).await?;
LemmyResult::Ok(())
},
)
.await?;
let failed_user_blocks = fetch_and_import(
data.blocked_users.clone(),
&context,
|(blocked, context)| async move {
let context = context.reset_request_count();
let target = blocked.dereference(&context).await?;
let form = PersonBlockForm {
person_id,
target_id: target.id,
};
PersonBlock::block(&mut context.pool(), &form).await?;
LemmyResult::Ok(())
},
)
.await?;
try_join_all(data.blocked_instances.iter().map(|domain| async {
@ -345,18 +266,54 @@ pub async fn import_settings(
}))
.await?;
info!("Settings import completed for {}, the following items failed: {failed_followed_communities}, {failed_saved_posts}, {failed_saved_comments}, {failed_community_blocks}, {failed_user_blocks}",
local_user_view.person.name);
Ok(())
});
Ok(Json(Default::default()))
}
async fn fetch_and_import<Kind, Fut>(
objects: Vec<ObjectId<Kind>>,
context: &Data<LemmyContext>,
import_fn: impl FnMut((ObjectId<Kind>, Data<LemmyContext>)) -> Fut,
) -> LemmyResult<String>
where
Kind: Object + Send + 'static,
for<'de2> <Kind as Object>::Kind: Deserialize<'de2>,
Fut: Future<Output = LemmyResult<()>>,
{
let mut failed_items = vec![];
futures::stream::iter(
objects
.clone()
.into_iter()
// need to reset outgoing request count to avoid running into limit
.map(|s| (s, context.reset_request_count()))
.map(import_fn),
)
.buffer_unordered(PARALLELISM)
.collect::<Vec<_>>()
.await
.into_iter()
.enumerate()
.for_each(|(i, r): (usize, LemmyResult<()>)| {
if r.is_err() {
if let Some(object) = objects.get(i) {
failed_items.push(object.inner().clone());
}
}
});
Ok(failed_items.into_iter().join(","))
}
#[cfg(test)]
#[allow(clippy::indexing_slicing)]
mod tests {
use crate::api::user_settings_backup::{export_settings, import_settings, UserSettingsBackup};
use activitypub_federation::config::Data;use lemmy_db_views_actor::structs::CommunityBlockView;
use activitypub_federation::config::Data;
use lemmy_api_common::context::LemmyContext;
use lemmy_db_schema::{
source::{
@ -368,7 +325,7 @@ mod tests {
traits::{Crud, Followable},
};
use lemmy_db_views::structs::LocalUserView;
use lemmy_db_views_actor::structs::CommunityFollowerView;
use lemmy_db_views_actor::structs::{CommunityBlockView, CommunityFollowerView};
use lemmy_utils::error::{LemmyErrorType, LemmyResult};
use pretty_assertions::assert_eq;
use serial_test::serial;
@ -527,7 +484,6 @@ mod tests {
Ok(())
}
#[tokio::test]
#[serial]
async fn test_settings_fetch_and_import() -> LemmyResult<()> {
@ -554,11 +510,7 @@ mod tests {
// wait for background task to finish
sleep(Duration::from_millis(1000)).await;
let blocks = CommunityBlockView::for_person(
&mut context.pool(),
import_user.person.id,
)
.await?;
let blocks = CommunityBlockView::for_person(&mut context.pool(), import_user.person.id).await?;
assert_eq!(blocks.len(), 3);
LocalUser::delete(&mut context.pool(), import_user.local_user.id).await?;
Ok(())