azure_core/request_options/
metadata.rs

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1use crate::headers;
2use crate::headers::Headers;
3use crate::Header;
4use bytes::Bytes;
5use std::collections::HashMap;
6
7#[derive(Debug, Clone)]
8pub struct Metadata(HashMap<String, Bytes>);
9
10impl Default for Metadata {
11    fn default() -> Self {
12        Self::new()
13    }
14}
15
16impl AsMut<HashMap<String, Bytes>> for Metadata {
17    fn as_mut(&mut self) -> &mut HashMap<String, Bytes> {
18        &mut self.0
19    }
20}
21
22impl Metadata {
23    pub fn new() -> Self {
24        Self(HashMap::new())
25    }
26
27    pub fn insert<K, V>(&mut self, k: K, v: V) -> Option<Bytes>
28    where
29        K: Into<String>,
30        V: Into<Bytes>,
31    {
32        self.0.insert(k.into(), v.into())
33    }
34
35    pub fn len(&self) -> usize {
36        self.0.len()
37    }
38
39    pub fn is_empty(&self) -> bool {
40        self.0.is_empty()
41    }
42
43    pub fn get(&self, k: &str) -> Option<Bytes> {
44        self.0.get(k).cloned()
45    }
46
47    pub fn iter(&self) -> impl Iterator<Item = Metadatum> + '_ {
48        self.0.iter().map(|(key, value)| {
49            Metadatum(
50                key.clone(),
51                std::str::from_utf8(value)
52                    .expect("non-utf8 header value")
53                    .into(),
54            )
55        })
56    }
57}
58
59#[derive(Debug)]
60pub struct Metadatum(String, String);
61
62impl Header for Metadatum {
63    fn name(&self) -> headers::HeaderName {
64        format!("x-ms-meta-{}", self.0).into()
65    }
66
67    fn value(&self) -> headers::HeaderValue {
68        self.1.clone().into()
69    }
70}
71
72impl From<&Headers> for Metadata {
73    fn from(header_map: &Headers) -> Self {
74        let mut metadata = Metadata::new();
75        header_map.iter().for_each(|(name, value)| {
76            let name = name.as_str();
77            let value = value.as_str();
78            if let Some(name) = name.strip_prefix("x-ms-meta-") {
79                metadata.insert(name.to_owned(), value.to_owned());
80            }
81        });
82
83        metadata
84    }
85}
azure_core/request_options/metadata.rs

azure_core/request_options/
metadata.rs
