tustvold commented on code in PR #512:
URL:
https://github.com/apache/arrow-rs-object-store/pull/512#discussion_r2443439527
##########
src/client/backoff.rs:
##########
@@ -110,7 +110,7 @@ impl Backoff {
#[cfg(test)]
mod tests {
use super::*;
- use rand::rand_core::impls::fill_bytes_via_next;
+ use rand_core::impls::fill_bytes_via_next;
Review Comment:
Why this change?
##########
src/aws/credential.rs:
##########
@@ -423,6 +423,10 @@ fn canonicalize_headers(header_map: &HeaderMap) ->
(String, String) {
let mut value_bytes = 0;
let mut key_bytes = 0;
+ fn normalize_whitespace(s: &str) -> String {
+ s.split_whitespace().collect::<Vec<_>>().join(" ")
Review Comment:
The specification only says to convert consecutive spaces, not arbitrary
whitespace (although in practice unicode characters or control characters in
headers can cause interesting things to happen).
##########
src/aws/credential.rs:
##########
@@ -452,7 +456,7 @@ fn canonicalize_headers(header_map: &HeaderMap) -> (String,
String) {
if value_idx != 0 {
canonical_headers.push(',');
}
- canonical_headers.push_str(value.trim());
+ canonical_headers.push_str(&normalize_whitespace(value));
Review Comment:
It seems rather wasteful to allocate both a Vec and a String only to append
there contents to another string.
Perhaps we could just do something like (not tested)
```
let mut iter = value.trim().split(" ").filter(|x| !x.is_empty());
if let Some(first) = iter.next() {
canonical_headers.push(first);
for x in iter {
canonical_headers.push(' ');
canonical_headers.push(x);
}
}
```
##########
Cargo.toml:
##########
@@ -54,6 +54,7 @@ hyper = { version = "1.2", default-features = false, optional
= true }
md-5 = { version = "0.10.6", default-features = false, optional = true }
quick-xml = { version = "0.38.0", features = ["serialize",
"overlapped-lists"], optional = true }
rand = { version = "0.9", default-features = false, features = ["std",
"std_rng", "thread_rng"], optional = true }
+rand_core = "0.9.3" # ensure this matches rand's requirement
Review Comment:
This change seems unrelated (and brittle)?
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