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config_control.rs: Eliminate vector reallocation from get_nic_list

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Refactor the get_nic_list function to use iterators with a collect
at the end, ensuring that the result vector is allocated at exactly
the needed size.
This commit is contained in:
Herbert Wolverson 2023-01-19 15:15:42 +00:00
parent 7cb8f930d1
commit d0dd559f1d
1 changed files with 16 additions and 9 deletions
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25
src/rust/lqos_node_manager/src/config_control.rs
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@ -16,15 +16,22 @@ pub async fn config_page<'a>(_auth: AuthGuard) -> NoCache<Option<NamedFile>> {
#[get("/api/list_nics")]
pub async fn get_nic_list<'a>(_auth: AuthGuard) -> NoCache<Json<Vec<(String, String, String)>>> {
let mut result = Vec::new();
for eth in get_interfaces().iter() {
let mac = if let Some(mac) = &eth.mac_addr {
mac.to_string()
} else {
String::new()
};
result.push((eth.name.clone(), format!("{:?}", eth.if_type), mac));
}
let result = get_interfaces()
.iter()
.map(|eth| {
let mac = if let Some(mac) = &eth.mac_addr {
mac.to_string()
} else {
String::new()
};
(
eth.name.clone(),
format!("{:?}", eth.if_type),
mac
)
})
.collect();
NoCache::new(Json(result))
}