hadoop_common/conf/
configuration.rs

1#[derive(Clone, Copy)]
2pub struct Configuration {}
3
4impl Configuration {
5    /// Get the value of the `name` property, `None` if
6    /// no such property exists. If the key is deprecated, it returns the value of
7    /// the first key which replaces the deprecated key and is not `None`.
8    ///
9    /// Values are processed for [`variable expansion`]
10    /// before being returned.
11    ///
12    /// As a side effect get loads the properties from the sources if called for
13    /// the first time as a lazy init.
14    pub fn get<'a>(&self, _name: &str, default_value: Option<&'a str>) -> Option<&'a str> {
15        // TODO
16        None.or(default_value)
17    }
18
19    /// Get the value of the `name` property as a trimmed `&str`,
20    /// `None` if no such property exists.
21    /// If the key is deprecated, it returns the value of
22    /// the first key which replaces the deprecated key and is not `None`
23    ///
24    /// Values are processed for [`variable expansion`]
25    /// before being returned.
26    pub fn get_trimmed<'a>(&self, name: &str) -> Option<&'a str> {
27        self.get(name, None).map(|v| v.trim())
28    }
29
30    /// Get the value of the `name` property as a trimmed `&str`,
31    /// `default_value` if no such property exists.
32    /// See [`Configuration::get_trimmed`] for more details.
33    pub fn get_trimmed_with_default<'a>(&self, name: &str, default_value: &'a str) -> &'a str {
34        self.get_trimmed(name).unwrap_or(default_value)
35    }
36
37    /// Get the value of the `name` property as an `i32`.
38    /// If no such property exists, the provided default value is returned,
39    /// or if the specified value is not a valid `i32`,
40    /// then an error is thrown.
41    pub fn get_int(&self, name: &str, default_value: i32) -> anyhow::Result<i32> {
42        if let Some(value_string) = self.get_trimmed(name) {
43            Ok(i32::from_str_radix(value_string, 16)
44                .or_else(|_| i32::from_str_radix(value_string, 10))?)
45        } else {
46            Ok(default_value)
47        }
48    }
49
50    /// Get the value of the `name` property as an `i64`.
51    /// If no such property exists, the provided default value is returned,
52    /// or if the specified value is not a valid `i64`,
53    /// then an error is thrown.
54    pub fn get_long(&self, name: &str, default_value: i64) -> anyhow::Result<i64> {
55        if let Some(value_string) = self.get_trimmed(name) {
56            Ok(i64::from_str_radix(value_string, 16)
57                .or_else(|_| i64::from_str_radix(value_string, 10))?)
58        } else {
59            Ok(default_value)
60        }
61    }
62
63    /// Get the value of the `name` property as a `bool`.
64    /// If no such property is specified, or if the specified value is not a valid
65    /// `bool`, then `default_value` is returned.
66    pub fn get_bool(&self, name: &str, default_value: bool) -> bool {
67        match self.get_trimmed(name) {
68            Some(v) if v.to_lowercase() == "true" => true,
69            Some(v) if v.to_lowercase() == "false" => false,
70            _ => default_value,
71        }
72    }
73}
hadoop_common/conf/configuration.rs

hadoop_common/conf/
configuration.rs
