51 lines
1.5 KiB
Rust
51 lines
1.5 KiB
Rust
use std::{convert::AsRef, fmt::Debug};
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use conduit::{implement, Result};
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use futures::{
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future,
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stream::{Stream, StreamExt},
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TryStreamExt,
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};
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use serde::{Deserialize, Serialize};
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use crate::keyval::{result_deserialize_key, serialize_key, Key};
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#[implement(super::Map)]
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pub fn rev_keys_prefix<'a, K, P>(&'a self, prefix: &P) -> impl Stream<Item = Result<Key<'_, K>>> + Send
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where
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P: Serialize + ?Sized + Debug,
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K: Deserialize<'a> + Send,
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{
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self.rev_keys_prefix_raw(prefix)
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.map(result_deserialize_key::<K>)
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}
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#[implement(super::Map)]
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#[tracing::instrument(skip(self), level = "trace")]
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pub fn rev_keys_prefix_raw<P>(&self, prefix: &P) -> impl Stream<Item = Result<Key<'_>>> + Send
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where
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P: Serialize + ?Sized + Debug,
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{
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let key = serialize_key(prefix).expect("failed to serialize query key");
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self.rev_raw_keys_from(&key)
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.try_take_while(move |k: &Key<'_>| future::ok(k.starts_with(&key)))
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}
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#[implement(super::Map)]
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pub fn rev_keys_raw_prefix<'a, K, P>(&'a self, prefix: &'a P) -> impl Stream<Item = Result<Key<'_, K>>> + Send + 'a
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where
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P: AsRef<[u8]> + ?Sized + Debug + Sync + 'a,
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K: Deserialize<'a> + Send + 'a,
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{
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self.rev_raw_keys_prefix(prefix)
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.map(result_deserialize_key::<K>)
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}
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#[implement(super::Map)]
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pub fn rev_raw_keys_prefix<'a, P>(&'a self, prefix: &'a P) -> impl Stream<Item = Result<Key<'_>>> + Send + 'a
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where
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P: AsRef<[u8]> + ?Sized + Debug + Sync + 'a,
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{
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self.rev_raw_keys_from(prefix)
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.try_take_while(|k: &Key<'_>| future::ok(k.starts_with(prefix.as_ref())))
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}
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