mirror of
https://github.com/mimblewimble/grin.git
synced 2025-02-02 01:11:09 +03:00
d2a84b7600
* update error handling in chain and other modules to use error/errorkind * sizeshift errorkind
94 lines
2.3 KiB
Rust
94 lines
2.3 KiB
Rust
// Copyright 2018 The Grin Developers
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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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//! Storage of core types using RocksDB.
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#![deny(non_upper_case_globals)]
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#![deny(non_camel_case_types)]
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#![deny(non_snake_case)]
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#![deny(unused_mut)]
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#![warn(missing_docs)]
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extern crate byteorder;
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extern crate croaring;
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extern crate env_logger;
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extern crate libc;
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extern crate lmdb_zero;
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extern crate memmap;
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extern crate serde;
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#[macro_use]
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extern crate slog;
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extern crate failure;
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#[macro_use]
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extern crate failure_derive;
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#[macro_use]
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extern crate grin_core as core;
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extern crate grin_util as util;
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pub mod leaf_set;
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mod lmdb;
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pub mod pmmr;
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pub mod prune_list;
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pub mod rm_log;
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pub mod types;
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const SEP: u8 = ':' as u8;
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use byteorder::{BigEndian, WriteBytesExt};
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pub use lmdb::*;
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/// An iterator thad produces Readable instances back. Wraps the lower level
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/// DBIterator and deserializes the returned values.
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// pub struct SerIterator<T>
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// where
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// T: ser::Readable,
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// {
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// iter: DBIterator,
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// _marker: marker::PhantomData<T>,
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// }
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//
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// impl<T> Iterator for SerIterator<T>
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// where
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// T: ser::Readable,
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// {
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// type Item = T;
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//
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// fn next(&mut self) -> Option<T> {
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// let next = self.iter.next();
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// next.and_then(|r| {
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// let (_, v) = r;
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// ser::deserialize(&mut &v[..]).ok()
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// })
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// }
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// }
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/// Build a db key from a prefix and a byte vector identifier.
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pub fn to_key(prefix: u8, k: &mut Vec<u8>) -> Vec<u8> {
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let mut res = Vec::with_capacity(k.len() + 2);
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res.push(prefix);
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res.push(SEP);
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res.append(k);
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res
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}
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/// Build a db key from a prefix and a numeric identifier.
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pub fn u64_to_key<'a>(prefix: u8, val: u64) -> Vec<u8> {
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let mut u64_vec = vec![];
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u64_vec.write_u64::<BigEndian>(val).unwrap();
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u64_vec.insert(0, SEP);
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u64_vec.insert(0, prefix);
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u64_vec
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}
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