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pub mod cache;
pub mod view;
use crate::storage::{FileHandle, ShellSafeName, TextLine};
use anyhow::Result;
use diem_types::transaction::Version;
use serde::{Deserialize, Serialize};
use std::convert::TryInto;
#[derive(Deserialize, Serialize)]
#[allow(clippy::enum_variant_names)] pub(crate) enum Metadata {
EpochEndingBackup(EpochEndingBackupMeta),
StateSnapshotBackup(StateSnapshotBackupMeta),
TransactionBackup(TransactionBackupMeta),
}
impl Metadata {
pub fn new_epoch_ending_backup(
first_epoch: u64,
last_epoch: u64,
first_version: Version,
last_version: Version,
manifest: FileHandle,
) -> Self {
Self::EpochEndingBackup(EpochEndingBackupMeta {
first_epoch,
last_epoch,
first_version,
last_version,
manifest,
})
}
pub fn new_state_snapshot_backup(version: Version, manifest: FileHandle) -> Self {
Self::StateSnapshotBackup(StateSnapshotBackupMeta { version, manifest })
}
pub fn new_transaction_backup(
first_version: Version,
last_version: Version,
manifest: FileHandle,
) -> Self {
Self::TransactionBackup(TransactionBackupMeta {
first_version,
last_version,
manifest,
})
}
pub fn name(&self) -> ShellSafeName {
match self {
Self::EpochEndingBackup(e) => {
format!("epoch_ending_{}-{}.meta", e.first_epoch, e.last_epoch)
}
Self::StateSnapshotBackup(s) => format!("state_snapshot_ver_{}.meta", s.version),
Self::TransactionBackup(t) => {
format!("transaction_{}-{}.meta", t.first_version, t.last_version,)
}
}
.try_into()
.unwrap()
}
pub fn to_text_line(&self) -> Result<TextLine> {
TextLine::new(&serde_json::to_string(self)?)
}
}
#[derive(Clone, Deserialize, Serialize, Eq, PartialEq, Ord, PartialOrd)]
pub struct EpochEndingBackupMeta {
pub first_epoch: u64,
pub last_epoch: u64,
pub first_version: Version,
pub last_version: Version,
pub manifest: FileHandle,
}
#[derive(Clone, Deserialize, Serialize, Eq, PartialEq, Ord, PartialOrd)]
pub struct StateSnapshotBackupMeta {
pub version: Version,
pub manifest: FileHandle,
}
#[derive(Clone, Deserialize, Serialize, Eq, PartialEq, Ord, PartialOrd)]
pub struct TransactionBackupMeta {
pub first_version: Version,
pub last_version: Version,
pub manifest: FileHandle,
}