1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
use std::collections::{BTreeMap, HashMap};
use std::iter::FromIterator;
use request::{self, Request};
use net::{timeout, ReqId};
use time::{Duration, SteadyTime};
#[derive(Debug)]
pub struct RequestSet {
counter: u64,
base: Option<SteadyTime>,
ids: HashMap<ReqId, u64>,
reqs: BTreeMap<u64, Request>,
}
impl Default for RequestSet {
fn default() -> Self {
RequestSet {
counter: 0,
base: None,
ids: HashMap::new(),
reqs: BTreeMap::new(),
}
}
}
impl RequestSet {
pub fn insert(&mut self, req_id: ReqId, req: Request, now: SteadyTime) {
let counter = self.counter;
self.ids.insert(req_id, counter);
self.reqs.insert(counter, req);
if self.reqs.keys().next().map_or(true, |x| *x == counter) {
self.base = Some(now);
}
self.counter += 1;
}
pub fn remove(&mut self, req_id: &ReqId, now: SteadyTime) -> Option<Request> {
let id = match self.ids.remove(&req_id) {
Some(id) => id,
None => return None,
};
let req = self.reqs.remove(&id).expect("entry in `ids` implies entry in `reqs`; qed");
match self.reqs.keys().next() {
Some(k) if *k > id => self.base = Some(now),
None => self.base = None,
_ => {}
}
Some(req)
}
pub fn check_timeout(&self, now: SteadyTime) -> bool {
let base = match self.base.as_ref().cloned() {
Some(base) => base,
None => return false,
};
let kind = self.reqs.values()
.next()
.map(|r| r.kind())
.expect("base time implies `reqs` non-empty; qed");
let kind_timeout = match kind {
request::Kind::Headers => timeout::HEADERS,
request::Kind::Bodies => timeout::BODIES,
request::Kind::Receipts => timeout::RECEIPTS,
request::Kind::StateProofs => timeout::PROOFS,
request::Kind::Codes => timeout::CONTRACT_CODES,
request::Kind::HeaderProofs => timeout::HEADER_PROOFS,
};
base + Duration::milliseconds(kind_timeout) <= now
}
pub fn collect_ids<F>(&self) -> F where F: FromIterator<ReqId> {
self.ids.keys().cloned().collect()
}
}
#[cfg(test)]
mod tests {
use net::{timeout, ReqId};
use request::{Request, Receipts};
use time::{SteadyTime, Duration};
use super::RequestSet;
#[test]
fn multi_timeout() {
let test_begin = SteadyTime::now();
let mut req_set = RequestSet::default();
let the_req = Request::Receipts(Receipts { block_hashes: Vec::new() });
req_set.insert(ReqId(0), the_req.clone(), test_begin);
req_set.insert(ReqId(1), the_req, test_begin + Duration::seconds(1));
assert_eq!(req_set.base, Some(test_begin));
let test_end = test_begin + Duration::milliseconds(timeout::RECEIPTS);
assert!(req_set.check_timeout(test_end));
req_set.remove(&ReqId(0), test_begin + Duration::seconds(1)).unwrap();
assert!(!req_set.check_timeout(test_end));
assert!(req_set.check_timeout(test_end + Duration::seconds(1)));
}
}