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use std::collections::HashMap;
use std::io;
use crate::distribution::Distribution;
use metrics::SetRecorderError;
use thiserror::Error as ThisError;
#[derive(Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub enum Matcher {
Full(String),
Prefix(String),
Suffix(String),
}
impl Matcher {
pub fn matches(&self, key: &str) -> bool {
match self {
Matcher::Prefix(prefix) => key.starts_with(prefix),
Matcher::Suffix(suffix) => key.ends_with(suffix),
Matcher::Full(full) => key == full,
}
}
pub(crate) fn sanitized(self) -> Matcher {
match self {
Matcher::Prefix(prefix) => Matcher::Prefix(sanitize_key_name(prefix.as_str())),
Matcher::Suffix(suffix) => Matcher::Suffix(sanitize_key_name(suffix.as_str())),
Matcher::Full(full) => Matcher::Full(sanitize_key_name(full.as_str())),
}
}
}
#[derive(Debug, ThisError)]
pub enum InstallError {
#[error("failed to spawn Tokio runtime for endpoint: {0}")]
Io(#[from] io::Error),
#[cfg(feature = "tokio-exporter")]
#[error("failed to bind to given listen address: {0}")]
Hyper(#[from] hyper::Error),
#[error("failed to install exporter as global recorder: {0}")]
Recorder(#[from] SetRecorderError),
}
pub struct Snapshot {
pub counters: HashMap<String, HashMap<Vec<String>, u64>>,
pub gauges: HashMap<String, HashMap<Vec<String>, f64>>,
pub distributions: HashMap<String, HashMap<Vec<String>, Distribution>>,
}
pub fn sanitize_key_name(key: &str) -> String {
let sanitize = |c: char| !(c.is_alphanumeric() || c == '_' || c == ':');
key.to_string().replace(sanitize, "_")
}
#[cfg(test)]
mod tests {
use super::sanitize_key_name;
#[test]
fn test_sanitize_key_name() {
let test_cases = vec![
("____", "____"),
("foo bar", "foo_bar"),
("abcd:efgh", "abcd:efgh"),
("lars.andersen", "lars_andersen"),
];
for (input, expected) in test_cases {
let result = sanitize_key_name(input);
assert_eq!(expected, result);
}
}
}