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fix linting errors, add retransmission fix to repair requests

This commit is contained in:
OEM Configuration (temporary user) 2018-06-19 00:08:27 -07:00 committed by Greg Fitzgerald
parent b20efabfd2
commit ceafc29040
1 changed files with 34 additions and 16 deletions
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50
src/crdt.rs
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@ -602,12 +602,18 @@ impl Crdt {
if blob_ix == ix {
let num_retransmits = wblob.meta.num_retransmits;
wblob.meta.num_retransmits += 1;
if me.current_leader_id == me.id &&
num_retransmits != 0 &&
!num_retransmits.is_power_of_two()
// Setting the sender id to the requester id
// prevents the requester from retransmitting this response
// to other peers
let mut sender_id = from.id;
// Allow retransmission of this response if the node
// is the leader and the number of repair requests equals
// a power of two
if me.current_leader_id == me.id
&& (num_retransmits == 0 || num_retransmits.is_power_of_two())
{
return None;
sender_id = me.id
}
let out = blob_recycler.allocate();
@ -619,7 +625,7 @@ impl Crdt {
outblob.meta.size = sz;
outblob.data[..sz].copy_from_slice(&wblob.data[..sz]);
outblob.meta.set_addr(&from.repair_addr);
outblob.set_id(me.id).expect("blob set_id");
outblob.set_id(sender_id).expect("blob set_id");
}
return Some(out);
@ -1124,6 +1130,7 @@ mod tests {
#[test]
fn run_window_request_with_backoff() {
let window = default_window();
let mut me = ReplicatedData::new(
KeyPair::new().pubkey(),
"127.0.0.1:1234".parse().unwrap(),
@ -1133,11 +1140,21 @@ mod tests {
"127.0.0.1:1238".parse().unwrap(),
);
let mock_peer = ReplicatedData::new(
KeyPair::new().pubkey(),
"127.0.0.1:1234".parse().unwrap(),
"127.0.0.1:1235".parse().unwrap(),
"127.0.0.1:1236".parse().unwrap(),
"127.0.0.1:1237".parse().unwrap(),
"127.0.0.1:1238".parse().unwrap(),
);
me.current_leader_id = me.id;
let recycler = BlobRecycler::default();
let num_requests: u32 = 64;
let rv = Crdt::run_window_request(&window, &me, &me, 0, &recycler);
// Simulate handling a repair request from mock_peer
let rv = Crdt::run_window_request(&window, &me, &mock_peer, 0, &recycler);
assert!(rv.is_none());
let out = recycler.allocate();
out.write().unwrap().meta.size = 200;
@ -1145,17 +1162,18 @@ mod tests {
let range: std::ops::Range<u32> = 0..num_requests;
for i in range {
let rv = Crdt::run_window_request(&window, &me, &me, 0, &recycler);
if i != 0 && !(i.is_power_of_two()) {
assert!(rv.is_none());
continue;
}
let rv = Crdt::run_window_request(&window, &me, &mock_peer, 0, &recycler);
assert!(rv.is_some());
let v = rv.unwrap();
//test we copied the blob
assert_eq!(v.read().unwrap().meta.size, 200);
let blob = v.read().unwrap();
// Test we copied the blob
assert_eq!(blob.meta.size, 200);
if i != 0 && !(i.is_power_of_two()) {
assert_eq!(blob.get_id().unwrap(), mock_peer.id);
} else {
assert_eq!(blob.get_id().unwrap(), me.id);
}
}
}
}