Adding a working bft-json-crdt implementation for the PoC

crates/bft-json-crdt/benches/speed.rs

@@ -0,0 +1,57 @@
+#![feature(test)]
+
+extern crate test;
+use bft_json_crdt::{keypair::make_author, list_crdt::ListCrdt, op::Op, op::ROOT_ID, json_crdt::Value};
+use rand::seq::SliceRandom;
+use test::Bencher;
+
+#[bench]
+fn bench_insert_1_000_root(b: &mut Bencher) {
+    b.iter(|| {
+        let mut list = ListCrdt::<i64>::new(make_author(1), vec![]);
+        for i in 0..1_000 {
+            list.insert(ROOT_ID, i);
+        }
+    })
+}
+
+#[bench]
+fn bench_insert_1_000_linear(b: &mut Bencher) {
+    b.iter(|| {
+        let mut list = ListCrdt::<i64>::new(make_author(1), vec![]);
+        let mut prev = ROOT_ID;
+        for i in 0..1_000 {
+            let op = list.insert(prev, i);
+            prev = op.id;
+        }
+    })
+}
+
+#[bench]
+fn bench_insert_many_agents_conflicts(b: &mut Bencher) {
+    b.iter(|| {
+        const N: u8 = 50;
+        let mut rng = rand::thread_rng();
+        let mut crdts: Vec<ListCrdt<i64>> = Vec::with_capacity(N as usize);
+        let mut logs: Vec<Op<Value>> = Vec::new();
+        for i in 0..N {
+            let list = ListCrdt::new(make_author(i), vec![]);
+            crdts.push(list);
+            for _ in 0..5 {
+                let op = crdts[i as usize].insert(ROOT_ID, i as i32);
+                logs.push(op);
+            }
+        }
+
+        logs.shuffle(&mut rng);
+        for op in logs {
+            for c in &mut crdts {
+                if op.author() != c.our_id {
+                    c.apply(op.clone());
+                }
+            }
+        }
+
+        assert!(crdts.windows(2).all(|w| w[0].view() == w[1].view()));
+    })
+}