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use std::fmt;
use std::time::Duration;
use crate::{Immediately, Wait};
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum DefaultPoolCheckoutMode {
Immediately,
Wait,
WaitAtMost(Duration),
}
impl std::str::FromStr for DefaultPoolCheckoutMode {
type Err = ParseDefaultPoolCheckoutModeError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
match &*s.to_lowercase() {
"wait" => Ok(DefaultPoolCheckoutMode::Wait),
"immediately" => Ok(DefaultPoolCheckoutMode::Immediately),
milliseconds => Ok(DefaultPoolCheckoutMode::WaitAtMost(Duration::from_millis(
milliseconds
.parse::<u64>()
.map_err(|err| ParseDefaultPoolCheckoutModeError(err.to_string()))?,
))),
}
}
}
impl From<Immediately> for DefaultPoolCheckoutMode {
fn from(_: Immediately) -> Self {
DefaultPoolCheckoutMode::Immediately
}
}
impl From<Wait> for DefaultPoolCheckoutMode {
fn from(_: Wait) -> Self {
DefaultPoolCheckoutMode::Wait
}
}
impl From<Duration> for DefaultPoolCheckoutMode {
fn from(d: Duration) -> Self {
if d != Duration::from_secs(0) {
DefaultPoolCheckoutMode::WaitAtMost(d)
} else {
DefaultPoolCheckoutMode::Immediately
}
}
}
#[derive(Debug)]
pub struct ParseDefaultPoolCheckoutModeError(String);
impl fmt::Display for ParseDefaultPoolCheckoutModeError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(
f,
"Could not parse ParseDefaultPoolCheckoutMode: {}",
self.0
)
}
}
impl std::error::Error for ParseDefaultPoolCheckoutModeError {
fn description(&self) -> &str {
"parse default pool checkout mode failed"
}
fn cause(&self) -> Option<&dyn std::error::Error> {
None
}
}