76 lines
1.6 KiB
Rust
76 lines
1.6 KiB
Rust
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use std::fmt::{Debug, Display};
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use anyhow::{bail, Result};
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use reqwest::Response;
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pub struct WithIndex<T> {
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value: T,
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index: usize,
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}
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impl<T> WithIndex<T> {
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pub fn index_from(resp: &Response) -> Result<WithIndexBuilder<T>> {
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let index = match resp.headers().get("X-Consul-Index") {
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Some(v) => v.to_str()?.parse::<usize>()?,
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None => bail!("X-Consul-Index header not found"),
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};
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Ok(WithIndexBuilder {
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index,
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_phantom: Default::default(),
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})
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}
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pub fn into_inner(self) -> T {
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self.value
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}
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pub fn index(&self) -> usize {
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self.index
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}
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}
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impl<T> std::convert::AsRef<T> for WithIndex<T> {
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fn as_ref(&self) -> &T {
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&self.value
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}
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}
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impl<T> std::borrow::Borrow<T> for WithIndex<T> {
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fn borrow(&self) -> &T {
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&self.value
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}
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}
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impl<T> std::ops::Deref for WithIndex<T> {
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type Target = T;
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fn deref(&self) -> &T {
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&self.value
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}
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}
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impl<T: Debug> Debug for WithIndex<T> {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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<T as Debug>::fmt(self, f)
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}
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}
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impl<T: Display> Display for WithIndex<T> {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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<T as Display>::fmt(self, f)
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}
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}
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pub struct WithIndexBuilder<T> {
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_phantom: std::marker::PhantomData<T>,
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index: usize,
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}
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impl<T> WithIndexBuilder<T> {
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pub fn value(self, value: T) -> WithIndex<T> {
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WithIndex {
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value,
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index: self.index,
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}
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}
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}
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