fix bloomfilter, due to hash function issue on wasm32

Cargo.lock

@@ -562,15 +562,6 @@ dependencies = [
  "syn 2.0.58",
 ]
 
-[[package]]
-name = "bit-vec"
-version = "0.6.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "349f9b6a179ed607305526ca489b34ad0a41aed5f7980fa90eb03160b69598fb"
-dependencies = [
- "serde",
-]
-
 [[package]]
 name = "bit_field"
 version = "0.10.2"
@@ -670,17 +661,6 @@ dependencies = [
  "log",
 ]
 
-[[package]]
-name = "bloomfilter"
-version = "1.0.13"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b64d54e47a7f4fd723f082e8f11429f3df6ba8adaeca355a76556f9f0602bbcf"
-dependencies = [
- "bit-vec",
- "getrandom 0.2.10",
- "siphasher 1.0.1",
-]
-
 [[package]]
 name = "brotli"
 version = "3.3.4"
@@ -1743,6 +1723,12 @@ dependencies = [
  "getrandom 0.2.10",
 ]
 
+[[package]]
+name = "fastrange-rs"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e90a1392cd6ec5ebe42ccaf251f2b7ba6be654c377f05c913f3898bfb2172512"
+
 [[package]]
 name = "fdeflate"
 version = "0.3.0"
@@ -3463,7 +3449,6 @@ version = "0.1.0-preview.1"
 dependencies = [
  "base64-url",
  "blake3",
- "bloomfilter",
  "chacha20",
  "crypto_box",
  "current_platform",
@@ -3478,6 +3463,7 @@ dependencies = [
  "once_cell",
  "os_info",
  "rand 0.7.3",
+ "sbbf-rs-safe",
  "serde",
  "serde_bare",
  "serde_bytes",
@@ -3566,7 +3552,6 @@ dependencies = [
  "async-std",
  "async-trait",
  "automerge",
- "bloomfilter",
  "either",
  "futures",
  "getrandom 0.2.10",
@@ -3575,6 +3560,7 @@ dependencies = [
  "ng-repo",
  "ng-storage-rocksdb",
  "rand 0.7.3",
+ "sbbf-rs-safe",
  "serde",
  "serde_bare",
  "serde_bytes",
@@ -4904,6 +4890,25 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "sbbf-rs"
+version = "0.2.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5525db49c7719816ac719ea8ffd0d0b4586db1a3f5d3e7751593230dacc642fd"
+dependencies = [
+ "cpufeatures",
+ "fastrange-rs",
+]
+
+[[package]]
+name = "sbbf-rs-safe"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9902ffeb2cff3f8c072c60c7d526ac9560fc9a66fe1dfc3c240eba5e2151ba3c"
+dependencies = [
+ "sbbf-rs",
+]
+
 [[package]]
 name = "schannel"
 version = "0.1.22"
@@ -5242,9 +5247,6 @@ name = "siphasher"
 version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "56199f7ddabf13fe5074ce809e7d3f42b42ae711800501b5b16ea82ad029c39d"
-dependencies = [
- "serde",
-]
 
 [[package]]
 name = "sized-chunks"

ng-oxigraph/src/oxigraph/storage/backend/fallback.rs

@@ -81,7 +81,7 @@ impl Db {
 
     pub fn ng_transaction<'a, 'b: 'a, T, E: Error + 'static + From<StorageError>>(
         &'b self,
-        f: impl Fn(Transaction<'a>) -> Result<T, E>,
+        mut f: impl FnMut(Transaction<'a>) -> Result<T, E>,
     ) -> Result<T, E> {
         let mut t = Transaction::new(Rc::new(RefCell::new(self.db.write().unwrap())));
         let res = f(t.clone());

ng-oxigraph/src/oxigraph/storage/backend/oxi_rocksdb.rs

@@ -714,7 +714,7 @@ impl Db {
 
     pub fn ng_transaction<'a, 'b: 'a, T, E: Error + 'static + From<StorageError>>(
         &'b self,
-        f: impl Fn(Transaction<'a>) -> Result<T, E>,
+        mut f: impl FnMut(Transaction<'a>) -> Result<T, E>,
     ) -> Result<T, E> {
         if let DbKind::ReadWrite(db) = &self.inner {
             loop {

ng-oxigraph/src/oxigraph/storage/mod.rs

@@ -378,7 +378,7 @@ impl Storage {
 
     pub fn ng_transaction<'a, 'b: 'a, T, E: Error + 'static + From<StorageError>>(
         &'b self,
-        f: impl Fn(StorageWriter<'a>) -> Result<T, E>,
+        mut f: impl FnMut(StorageWriter<'a>) -> Result<T, E>,
     ) -> Result<T, E> {
         self.db.ng_transaction(|transaction| {
             f(StorageWriter {

ng-oxigraph/src/oxigraph/store.rs

@@ -439,7 +439,7 @@ impl Store {
     /// ```
     fn transaction<'a, 'b: 'a, T, E: Error + 'static + From<StorageError>>(
         &'b self,
-        f: impl Fn(Transaction<'a>) -> Result<T, E>,
+        mut f: impl FnMut(Transaction<'a>) -> Result<T, E>,
     ) -> Result<T, E> {
         self.storage
             .ng_transaction(|writer| f(Transaction { writer }))
@@ -524,7 +524,7 @@ impl Store {
     #[doc(hidden)]
     pub fn ng_transaction<'a, 'b: 'a, T, E: Error + 'static + From<StorageError>>(
         &'b self,
-        f: impl Fn(Transaction<'a>) -> Result<T, E>,
+        mut f: impl FnMut(Transaction<'a>) -> Result<T, E>,
     ) -> Result<T, E> {
         self.storage
             .ng_transaction(|writer| f(Transaction { writer }))

ng-repo/Cargo.toml

@@ -34,7 +34,7 @@ rand =  { version = "0.7", features = ["getrandom"] }
 blake3 = "1.3.1"
 chacha20 = "0.9.0"
 ed25519-dalek = "1.0.1"
-bloomfilter = { version = "1.0.13", features = ["random","serde"] }
+sbbf-rs-safe = "0.3.2"
 curve25519-dalek = "3.2.0"
 threshold_crypto = "0.4.0"
 crypto_box = { version = "0.8.2", features = ["seal"] }

ng-repo/src/branch.rs

@@ -13,7 +13,7 @@ use std::collections::HashMap;
 use std::collections::HashSet;
 use std::fmt;
 
-use bloomfilter::Bloom;
+use sbbf_rs_safe::Filter;
 use zeroize::Zeroize;
 
 use crate::errors::*;
@@ -187,7 +187,7 @@ impl Branch {
         missing: &mut Option<&mut HashSet<ObjectId>>,
         future: Option<ObjectId>,
         theirs_found: &mut Option<&mut HashSet<ObjectId>>,
-        theirs_filter: &Option<Bloom<ObjectId>>,
+        theirs_filter: &Option<Filter>,
     ) -> Result<(), ObjectParseError> {
         let id = cobj.id();
 
@@ -195,7 +195,8 @@ impl Branch {
         // load deps, stop at the root(including it in visited) or if this is a commit object from known_heads
 
         let found_in_filter = if let Some(filter) = theirs_filter {
-            filter.check(&id)
+            let hash = id.get_hash();
+            filter.contains_hash(hash)
         } else {
             false
         };
@@ -276,7 +277,7 @@ impl Branch {
             // we silently discard any load error on the known_heads as the responder might not know them (yet).
         }
 
-        //log_debug!("their causal past \n{}", Dag(&theirs));
+        // log_debug!("their causal past \n{}", Dag(&theirs));
 
         let mut visited = HashMap::new();
 
@@ -284,8 +285,7 @@ impl Branch {
 
         let filter = if let Some(filter) = known_commits.as_ref() {
             Some(
-                serde_bare::from_slice(filter.filter())
+                filter.filter(), //.map_err(|_| ObjectParseError::FilterDeserializationError)?,
-                    .map_err(|_| ObjectParseError::FilterDeserializationError)?,
             )
         } else {
             None
@@ -309,7 +309,7 @@ impl Branch {
             // we silently discard any load error on the target_heads as they can be wrong if the requester is confused about what the responder has locally.
         }
 
-        //log_debug!("what we have here \n{}", Dag(&visited));
+        // log_debug!("what we have here \n{}", Dag(&visited));
 
         // now ordering to respect causal partial order.
         let mut next_generations = HashSet::new();

ng-repo/src/types.rs

@@ -13,9 +13,11 @@
 
 use core::fmt;
 use std::cmp::Ordering;
-use std::hash::Hash;
+use std::collections::hash_map::DefaultHasher;
+use std::hash::{Hash, Hasher};
 
 use once_cell::sync::OnceCell;
+use sbbf_rs_safe::Filter;
 use serde::{Deserialize, Serialize};
 use threshold_crypto::serde_impl::SerdeSecret;
 use zeroize::{Zeroize, ZeroizeOnDrop};
@@ -70,6 +72,16 @@ impl Digest {
             Self::Blake3Digest32(o) => o,
         }
     }
+    /// returns a hash that is consistent across platforms (32/64 bits. important for WASM32 compatibility with the rest)
+    /// see https://www.reddit.com/r/rust/comments/fwpki6/a_debugging_mystery_hashing_slices_in_wasm_works/
+    pub fn get_hash(&self) -> u64 {
+        let mut hasher = DefaultHasher::new();
+        let ser = serde_bare::to_vec(&self).unwrap();
+        for e in ser {
+            e.hash(&mut hasher);
+        }
+        hasher.finish()
+    }
 }
 
 impl fmt::Display for Digest {
@@ -373,10 +385,15 @@ pub enum BloomFilter {
 }
 
 impl BloomFilter {
-    pub fn filter(&self) -> &Vec<u8> {
+    pub fn filter(&self) -> Filter {
         match self {
-            Self::V0(v0) => &v0.f,
+            Self::V0(v0) => Filter::from_bytes(&v0.f).unwrap(),
+        }
     }
+    pub fn from_filter(filter: &Filter) -> Self {
+        BloomFilter::V0(BloomFilterV0 {
+            f: filter.as_bytes().to_vec(),
+        })
     }
 }
 

ng-verifier/Cargo.toml

@@ -31,7 +31,7 @@ async-trait = "0.1.64"
 async-std = { version = "1.12.0", features = [ "attributes", "unstable" ] }
 automerge = "0.5.9"
 yrs = "0.18.2"
-bloomfilter = { version = "1.0.13", features = ["random","serde"] }
+sbbf-rs-safe = "0.3.2"
 ng-repo = { path = "../ng-repo", version = "0.1.0-preview.1" }
 ng-net = { path = "../ng-net", version = "0.1.0-preview.1" }
 ng-oxigraph = { path = "../ng-oxigraph", version = "0.4.0-alpha.7-ngpreview6" }

ng-verifier/src/verifier.rs

@@ -23,9 +23,9 @@ use std::{collections::HashMap, sync::Arc};
 
 use async_std::stream::StreamExt;
 use async_std::sync::{Mutex, RwLockReadGuard};
-use bloomfilter::Bloom;
 use futures::channel::mpsc;
 use futures::SinkExt;
+use sbbf_rs_safe::Filter;
 use serde::{Deserialize, Serialize};
 use web_time::SystemTime;
 
@@ -1585,6 +1585,7 @@ impl Verifier {
             let mut theirs_found = HashSet::new();
             let mut visited = HashMap::new();
             for our in ours_set.iter() {
+                //log_info!("OUR HEADS {}", our);
                 if let Ok(cobj) = Object::load(*our, None, &repo.store) {
                     let _ = Branch::load_causal_past(
                         &cobj,
@@ -1611,14 +1612,11 @@ impl Verifier {
                     // prepare bloom filter
                     let expected_elements =
                         remote_commits_nbr + max(visited.len() as u64, branch_info.commits_nbr);
-                    let mut filter =
+                    let mut filter = Filter::new(27, expected_elements as usize);
-                        Bloom::<ObjectId>::new_for_fp_rate(expected_elements as usize, 0.01);
                     for commit_id in visited.keys() {
-                        filter.set(commit_id);
+                        filter.insert_hash(commit_id.get_hash());
                     }
-                    Some(BloomFilter::V0(BloomFilterV0 {
+                    Some(BloomFilter::from_filter(&filter))
-                        f: serde_bare::to_vec(&filter)?,
-                    }))
                 }
             };