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@ -13,7 +13,7 @@ use std::collections::HashMap; |
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use std::collections::HashSet; |
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use std::fmt; |
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use fastbloom_rs::{BloomFilter as Filter, Membership}; |
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use bloomfilter::Bloom; |
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use zeroize::Zeroize; |
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use crate::errors::*; |
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@ -51,6 +51,7 @@ impl BranchV0 { |
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#[derive(Debug)] |
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pub struct DagNode { |
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pub future: HashSet<ObjectId>, |
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pub past: HashSet<ObjectId>, |
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} |
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struct Dag<'a>(&'a HashMap<Digest, DagNode>); |
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@ -77,17 +78,30 @@ impl DagNode { |
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fn new() -> Self { |
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Self { |
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future: HashSet::new(), |
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past: HashSet::new(), |
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} |
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} |
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fn collapse(id: &ObjectId, dag: &HashMap<ObjectId, DagNode>) -> Vec<ObjectId> { |
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let mut res = vec![*id]; |
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fn collapse( |
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id: &ObjectId, |
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dag: &HashMap<ObjectId, DagNode>, |
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already_in: &mut HashSet<ObjectId>, |
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) -> Vec<ObjectId> { |
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let this = dag.get(id).unwrap(); |
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if this.past.len() > 1 && !this.past.is_subset(already_in) { |
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// we postpone it
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// log_debug!("postponed {}", id);
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vec![] |
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} else { |
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let mut res = vec![*id]; |
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already_in.insert(*id); |
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for child in this.future.iter() { |
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res.append(&mut Self::collapse(child, dag)); |
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res.append(&mut Self::collapse(child, dag, already_in)); |
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} |
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res |
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} |
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} |
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} |
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impl Branch { |
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/// topic private key (a BranchWriteCapSecret), encrypted with a key derived as follow
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@ -165,7 +179,7 @@ impl Branch { |
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missing: &mut Option<&mut HashSet<ObjectId>>, |
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future: Option<ObjectId>, |
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theirs_found: &mut Option<&mut HashSet<ObjectId>>, |
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theirs_filter: &Option<Filter>, |
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theirs_filter: &Option<Bloom<ObjectId>>, |
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) -> Result<(), ObjectParseError> { |
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let id = cobj.id(); |
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@ -173,7 +187,7 @@ impl Branch { |
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// load deps, stop at the root(including it in visited) or if this is a commit object from known_heads
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let found_in_filter = if let Some(filter) = theirs_filter { |
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filter.contains(id.slice()) |
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filter.check(&id) |
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} else { |
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false |
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}; |
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@ -185,12 +199,14 @@ impl Branch { |
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past.future.insert(f); |
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} |
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} else { |
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let mut insert = DagNode::new(); |
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let mut new_node_to_insert = DagNode::new(); |
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if let Some(f) = future { |
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insert.future.insert(f); |
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new_node_to_insert.future.insert(f); |
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} |
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visited.insert(id, insert); |
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for past_id in cobj.acks_and_nacks() { |
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let pasts = cobj.acks_and_nacks(); |
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new_node_to_insert.past.extend(pasts.iter().cloned()); |
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visited.insert(id, new_node_to_insert); |
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for past_id in pasts { |
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match Object::load(past_id, None, store) { |
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Ok(o) => { |
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Self::load_causal_past( |
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@ -258,9 +274,14 @@ impl Branch { |
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let theirs: HashSet<ObjectId> = theirs.keys().into_iter().cloned().collect(); |
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let filter = known_commits |
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.as_ref() |
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.map(|their_filter| Filter::from_u8_array(their_filter.f.as_slice(), their_filter.k)); |
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let filter = if let Some(filter) = known_commits.as_ref() { |
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Some( |
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serde_bare::from_slice(filter.filter()) |
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.map_err(|_| ObjectParseError::FilterDeserializationError)?, |
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) |
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} else { |
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None |
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}; |
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// collect all commits reachable from target_heads
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// up to the root or until encountering a commit from theirs
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@ -292,15 +313,22 @@ impl Branch { |
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let all = HashSet::from_iter(visited.keys()); |
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let first_generation = all.difference(&next_generations); |
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let mut result = Vec::with_capacity(visited.len()); |
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let mut already_in: HashSet<ObjectId> = HashSet::new(); |
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let sub_dag_to_send_size = visited.len(); |
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let mut result = Vec::with_capacity(sub_dag_to_send_size); |
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for first in first_generation { |
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result.append(&mut DagNode::collapse(first, &visited)); |
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result.append(&mut DagNode::collapse(first, &visited, &mut already_in)); |
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} |
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// #[cfg(debug_assertions)]
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// for _res in result.iter() {
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// log_debug!("sending missing commit {}", _res);
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// }
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if result.len() != sub_dag_to_send_size || already_in.len() != sub_dag_to_send_size { |
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return Err(ObjectParseError::MalformedDag); |
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} |
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#[cfg(debug_assertions)] |
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for _res in result.iter() { |
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log_debug!("sending missing commit {}", _res); |
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} |
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Ok(result) |
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} |
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@ -310,7 +338,7 @@ impl Branch { |
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#[cfg(test)] |
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mod test { |
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//use fastbloom_rs::{BloomFilter as Filter, FilterBuilder, Membership};
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//use use bloomfilter::Bloom;
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use crate::branch::*; |
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