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use crate::error::*;
#[derive(PartialEq, Debug)]
pub struct Url<'a> {
pub scheme: UrlScheme,
pub username: Option<&'a str>,
pub password: Option<&'a str>,
pub hostname: &'a str,
pub port: u16,
pub address: &'a str,
}
#[derive(PartialEq, Debug)]
pub enum UrlScheme {
AMQP,
AMQPS,
}
impl UrlScheme {
fn parse(input: &str) -> (&str, Result<UrlScheme>) {
if let Some(s) = input.strip_prefix("amqp://") {
(s, Ok(UrlScheme::AMQP))
} else if let Some(s) = input.strip_prefix("amqps://") {
(s, Ok(UrlScheme::AMQPS))
} else {
(input, Err(AmqpError::generic("unable to detect scheme")))
}
}
}
impl Url<'_> {
pub fn parse(input: &str) -> Result<Url> {
let (input, scheme) = UrlScheme::parse(input);
let scheme = scheme?;
let (input, username, password) = if let Some(creds_end) = input.find('@') {
let s = &input[0..creds_end];
if let Some(user_end) = s.find(':') {
let u = &input[0..user_end];
let p = &input[user_end + 1..creds_end];
(&input[creds_end + 1..], Some(u), Some(p))
} else {
(input, None, None)
}
} else {
(input, None, None)
};
let (input, hostname, port) = if let Some(pos) = input.find(':') {
let (hostname, input) = (&input[0..pos], &input[pos + 1..]);
let (input, port) = if let Some(end_pos) = input.find('/') {
(&input[end_pos + 1..], (&input[..end_pos]).parse::<u16>()?)
} else {
("", input.parse::<u16>()?)
};
(input, hostname, port)
} else if let Some(pos) = input.find('/') {
(&input[pos + 1..], &input[0..pos], 5672_u16)
} else {
("", input, 5672_u16)
};
let address = if let Some(pos) = input.find('/') {
&input[pos + 1..]
} else {
input
};
Ok(Url {
scheme,
username,
password,
hostname,
port,
address,
})
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_simple() {
let url = Url::parse(r"amqp://localhost/myqueue").expect("error parsing");
assert_eq!(UrlScheme::AMQP, url.scheme);
assert_eq!(5672, url.port);
assert_eq!("localhost", url.hostname);
assert_eq!("myqueue", url.address);
}
#[test]
fn test_credentials() {
let url = Url::parse(r"amqp://foo:bar@localhost/myqueue").expect("error parsing");
assert_eq!(UrlScheme::AMQP, url.scheme);
assert_eq!(5672, url.port);
assert_eq!("localhost", url.hostname);
assert_eq!("myqueue", url.address);
assert_eq!("foo", url.username.unwrap());
assert_eq!("bar", url.password.unwrap());
}
#[test]
fn test_port() {
let url = Url::parse(r"amqp://localhost:56722/myqueue").expect("error parsing");
assert_eq!(UrlScheme::AMQP, url.scheme);
assert_eq!(56722, url.port);
assert_eq!("localhost", url.hostname);
assert_eq!("myqueue", url.address);
}
#[test]
fn test_nodest() {
let url = Url::parse(r"amqp://localhost").expect("error parsing");
assert_eq!(UrlScheme::AMQP, url.scheme);
}
#[test]
fn test_full() {
let url = Url::parse(r"amqp://foo:bar@localhost:56722/myqueue").expect("error parsing");
assert_eq!("myqueue", url.address);
assert_eq!(UrlScheme::AMQP, url.scheme);
}
}