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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,134 @@ | ||
| use std::collections::BTreeSet; | ||
|
|
||
| use log::trace; | ||
| use rayon::prelude::{IntoParallelRefIterator, ParallelBridge, ParallelIterator}; | ||
|
|
||
| use crate::{ | ||
| repository::{IndexedFull, IndexedIds, IndexedTree}, | ||
| BlobType, DecryptWriteBackend, IndexedBackend, Indexer, NodeType, Open, Packer, ProgressBars, | ||
| ReadIndex, Repository, RusticResult, SnapshotFile, TreeStreamerOnce, | ||
| }; | ||
|
|
||
| #[derive(Debug)] | ||
| pub struct CopySnapshot { | ||
| pub relevant: bool, | ||
| pub sn: SnapshotFile, | ||
| } | ||
|
|
||
| pub(crate) fn copy<'a, Q, R: IndexedFull, P: ProgressBars, S: IndexedIds>( | ||
| repo: &Repository<Q, R>, | ||
| repo_dest: &Repository<P, S>, | ||
| snapshots: impl IntoIterator<Item = &'a SnapshotFile>, | ||
| ) -> RusticResult<()> { | ||
| let be_dest = repo_dest.dbe(); | ||
| let pb = &repo_dest.pb; | ||
|
|
||
| let (snap_trees, snaps): (Vec<_>, Vec<_>) = snapshots | ||
| .into_iter() | ||
| .cloned() | ||
| .map(|sn| (sn.tree, SnapshotFile::clear_ids(sn))) | ||
| .unzip(); | ||
|
|
||
| let index = repo.index(); | ||
| let index_dest = repo_dest.index(); | ||
| let indexer = Indexer::new(be_dest.clone()).into_shared(); | ||
|
|
||
| let data_packer = Packer::new( | ||
| be_dest.clone(), | ||
| BlobType::Data, | ||
| indexer.clone(), | ||
| repo_dest.config(), | ||
| index.total_size(BlobType::Data), | ||
| )?; | ||
| let tree_packer = Packer::new( | ||
| be_dest.clone(), | ||
| BlobType::Tree, | ||
| indexer.clone(), | ||
| repo_dest.config(), | ||
| index.total_size(BlobType::Tree), | ||
| )?; | ||
|
|
||
| let p = pb.progress_counter("copying blobs in snapshots..."); | ||
|
|
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| snap_trees | ||
| .par_iter() | ||
| .try_for_each(|id| -> RusticResult<_> { | ||
| trace!("copy tree blob {id}"); | ||
| if !index_dest.has_tree(id) { | ||
| let data = index.get_tree(id).unwrap().read_data(index.be())?; | ||
| tree_packer.add(data, *id)?; | ||
| } | ||
| Ok(()) | ||
| })?; | ||
|
|
||
| let tree_streamer = TreeStreamerOnce::new(index.clone(), snap_trees, p)?; | ||
| tree_streamer | ||
| .par_bridge() | ||
| .try_for_each(|item| -> RusticResult<_> { | ||
| let (_, tree) = item?; | ||
| tree.nodes.par_iter().try_for_each(|node| { | ||
| match node.node_type { | ||
| NodeType::File => { | ||
| node.content.par_iter().flatten().try_for_each( | ||
| |id| -> RusticResult<_> { | ||
| trace!("copy data blob {id}"); | ||
| if !index_dest.has_data(id) { | ||
| let data = index.get_data(id).unwrap().read_data(index.be())?; | ||
| data_packer.add(data, *id)?; | ||
| } | ||
| Ok(()) | ||
| }, | ||
| )?; | ||
| } | ||
|
|
||
| NodeType::Dir => { | ||
| let id = node.subtree.unwrap(); | ||
| trace!("copy tree blob {id}"); | ||
| if !index_dest.has_tree(&id) { | ||
| let data = index.get_tree(&id).unwrap().read_data(index.be())?; | ||
| tree_packer.add(data, id)?; | ||
| } | ||
| } | ||
|
|
||
| _ => {} // nothing to copy | ||
| } | ||
| Ok(()) | ||
| }) | ||
| })?; | ||
|
|
||
| _ = data_packer.finalize()?; | ||
| _ = tree_packer.finalize()?; | ||
| indexer.write().unwrap().finalize()?; | ||
|
|
||
| let p = pb.progress_counter("saving snapshots..."); | ||
| be_dest.save_list(snaps.iter(), p)?; | ||
| Ok(()) | ||
| } | ||
|
|
||
| pub(crate) fn relevant_snapshots<F, P: ProgressBars, S: Open>( | ||
| snaps: &[SnapshotFile], | ||
| dest_repo: &Repository<P, S>, | ||
| filter: F, | ||
| ) -> RusticResult<Vec<CopySnapshot>> | ||
| where | ||
| F: FnMut(&SnapshotFile) -> bool, | ||
| { | ||
| let p = dest_repo | ||
| .pb | ||
| .progress_counter("finding relevant snapshots..."); | ||
| // save snapshots in destination in BTreeSet, as we want to efficiently search within to filter out already existing snapshots before copying. | ||
| let snapshots_dest: BTreeSet<_> = SnapshotFile::all_from_backend(dest_repo.dbe(), filter, &p)? | ||
| .into_iter() | ||
| .collect(); | ||
|
|
||
| let relevant = snaps | ||
| .iter() | ||
| .cloned() | ||
| .map(|sn| CopySnapshot { | ||
| relevant: !snapshots_dest.contains(&sn), | ||
| sn, | ||
| }) | ||
| .collect(); | ||
|
|
||
| Ok(relevant) | ||
| } |
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