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use super::LEDGER_COUNTERS_CF_NAME;
use crate::{ledger_counters::LedgerCounters, schema::ensure_slice_len_eq};
use anyhow::Result;
use byteorder::{BigEndian, ReadBytesExt};
use diem_types::transaction::Version;
use schemadb::{
define_schema,
schema::{KeyCodec, ValueCodec},
};
use std::mem::size_of;
define_schema!(
LedgerCountersSchema,
Version,
LedgerCounters,
LEDGER_COUNTERS_CF_NAME
);
impl KeyCodec<LedgerCountersSchema> for Version {
fn encode_key(&self) -> Result<Vec<u8>> {
Ok(self.to_be_bytes().to_vec())
}
fn decode_key(mut data: &[u8]) -> Result<Self> {
ensure_slice_len_eq(data, size_of::<Version>())?;
Ok(data.read_u64::<BigEndian>()?)
}
}
impl ValueCodec<LedgerCountersSchema> for LedgerCounters {
fn encode_value(&self) -> Result<Vec<u8>> {
bcs::to_bytes(self).map_err(Into::into)
}
fn decode_value(data: &[u8]) -> Result<Self> {
bcs::from_bytes(data).map_err(Into::into)
}
}
#[cfg(test)]
mod test;