sapling/eden/mononoke/derived_data/manager/error.rs
Mark Juggurnauth-Thomas fd388aac1a derived_data_manager: implement data derivation
Summary:
Implement a new version of data derivation in the derived data manager.  This is different from the old version in a few ways:

* `derived_data::BonsaiDerivable` is replaced by `derived_data_manager::BonsaiDerivable`.  This trait defines both how to perform derivation and how to store and retrieve mapping values.  Derivation is performed with reference to the derived data manager, rather than `BlobRepo`.

* The old `Mapping` structs and traits are replaced with a direct implementation in the derived data manager, using the `BonsaiDerivable` trait to handle the derived-data-type-specific parts.

* The new implementation assumes we will stick with parallel derivation, and doesn't implement serial derivation.

Code is copied from the `derived_data` crate, as it is intended to be a replacement once all the derived data types are migrated, and re-using code would create a circular dependency during migration.

This only covers the basic derivation implementation used during production.  The derived data manager will also take over backfilling, but that will happen in a later diff.

Reviewed By: yancouto

Differential Revision: D30805046

fbshipit-source-id: b9660dd957fdf762f621b2cb37fc2eea7bf03074
2021-09-20 03:23:17 -07:00

19 lines
483 B
Rust

/*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This software may be used and distributed according to the terms of the
* GNU General Public License version 2.
*/
use anyhow::Error;
use mononoke_types::RepositoryId;
use thiserror::Error;
#[derive(Debug, Error)]
pub enum DerivationError {
#[error("Derivation of {0} is not enabled for repo={2} repoid={1}")]
Disabled(&'static str, RepositoryId, String),
#[error(transparent)]
Error(#[from] Error),
}