mirror of
https://github.com/fluencelabs/trust-graph-test
synced 2025-04-24 23:32:28 +00:00
143 lines
3.9 KiB
Rust
143 lines
3.9 KiB
Rust
/*
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* Copyright 2020 Fluence Labs Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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use fluence_keypair::PublicKey;
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use core::fmt;
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use ref_cast::RefCast;
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use serde::ser::Serializer;
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use std::str::FromStr;
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use std::{
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fmt::{Display, Formatter},
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hash::{Hash, Hasher},
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};
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/// Wrapper to use PublicKey in HashMap
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#[derive(PartialEq, Eq, Debug, Clone, RefCast)]
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#[repr(transparent)]
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pub struct PublicKeyHashable(PublicKey);
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#[allow(clippy::derive_hash_xor_eq)]
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impl Hash for PublicKeyHashable {
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fn hash<H: Hasher>(&self, state: &mut H) {
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state.write(&self.0.encode());
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state.finish();
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}
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fn hash_slice<H: Hasher>(data: &[Self], state: &mut H)
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where
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Self: Sized,
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{
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// TODO check for overflow
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let mut bytes: Vec<u8> = Vec::with_capacity(data.len() * 32);
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for d in data {
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bytes.extend_from_slice(&d.0.encode())
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}
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state.write(bytes.as_slice());
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state.finish();
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}
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}
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impl From<PublicKey> for PublicKeyHashable {
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fn from(pk: PublicKey) -> Self {
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Self(pk)
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}
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}
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impl From<PublicKeyHashable> for PublicKey {
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fn from(pk: PublicKeyHashable) -> PublicKey {
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pk.0
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}
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}
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impl AsRef<PublicKey> for PublicKeyHashable {
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fn as_ref(&self) -> &PublicKey {
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&self.0
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}
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}
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impl AsRef<PublicKeyHashable> for PublicKey {
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fn as_ref(&self) -> &PublicKeyHashable {
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PublicKeyHashable::ref_cast(self)
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}
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}
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impl Display for PublicKeyHashable {
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fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
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write!(f, "{}", bs58::encode(self.0.encode()).into_string())
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}
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}
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impl FromStr for PublicKeyHashable {
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type Err = fluence_keypair::error::DecodingError;
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fn from_str(s: &str) -> Result<Self, Self::Err> {
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let pk = PublicKey::from_base58(s)?;
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Ok(PublicKeyHashable::from(pk))
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}
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}
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impl serde::Serialize for PublicKeyHashable {
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
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where
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S: Serializer,
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{
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serializer.serialize_bytes(&self.0.encode())
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}
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}
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impl<'de> serde::Deserialize<'de> for PublicKeyHashable {
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fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
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where
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D: serde::Deserializer<'de>,
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{
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use serde::de::{Error, Visitor};
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struct PKVisitor;
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impl<'de> Visitor<'de> for PKVisitor {
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type Value = PublicKeyHashable;
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fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
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formatter.write_str("byte array or base58 string")
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}
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fn visit_str<E>(self, s: &str) -> Result<Self::Value, E>
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where
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E: Error,
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{
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bs58::decode(s)
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.into_vec()
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.map_err(|err| Error::custom(format!("Invalid string '{}': {}", s, err)))
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.and_then(|v| self.visit_bytes(v.as_slice()))
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.map_err(|err: E| {
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Error::custom(format!("Parsed string '{}' as base58, but {}", s, err))
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})
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}
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fn visit_bytes<E>(self, b: &[u8]) -> Result<Self::Value, E>
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where
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E: Error,
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{
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let pk = PublicKey::decode(b)
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.map_err(|err| Error::custom(format!("Invalid bytes {:?}: {}", b, err)))?;
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Ok(PublicKeyHashable::from(pk))
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}
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}
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deserializer.deserialize_str(PKVisitor)
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}
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}
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