reifydb-catalog 0.4.13

Database catalog and metadata management for ReifyDB
Documentation 
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// SPDX-License-Identifier: Apache-2.0
// Copyright (c) 2025 ReifyDB

use reifydb_core::{
	encoded::{key::EncodedKey, row::EncodedRow},
	interface::catalog::id::NamespaceId,
	key::{EncodableKey, kind::KeyKind, namespace::NamespaceKey},
};
use reifydb_transaction::transaction::Transaction;

use super::CatalogChangeApplier;
use crate::{Result, catalog::Catalog, error::CatalogChangeError, store::namespace::shape::namespace};

pub(super) struct NamespaceApplier;

impl CatalogChangeApplier for NamespaceApplier {
	fn set(catalog: &Catalog, txn: &mut Transaction<'_>, key: &EncodedKey, row: &EncodedRow) -> Result<()> {
		txn.set(key, row.clone())?;
		let ns = decode_namespace(row);
		catalog.materialized.set_namespace(ns.id(), txn.version(), Some(ns));
		Ok(())
	}

	fn remove(catalog: &Catalog, txn: &mut Transaction<'_>, key: &EncodedKey) -> Result<()> {
		txn.remove(key)?;
		let id = NamespaceKey::decode(key).map(|k| k.namespace).ok_or(CatalogChangeError::KeyDecodeFailed {
			kind: KeyKind::Namespace,
		})?;
		catalog.materialized.set_namespace(id, txn.version(), None);
		Ok(())
	}
}

use reifydb_core::interface::catalog::namespace::Namespace;

fn decode_namespace(row: &EncodedRow) -> Namespace {
	let id = NamespaceId(namespace::SHAPE.get_u64(row, namespace::ID));
	let name = namespace::SHAPE.get_utf8(row, namespace::NAME).to_string();
	let parent_id = NamespaceId(namespace::SHAPE.get_u64(row, namespace::PARENT_ID));
	let grpc = namespace::SHAPE.try_get_utf8(row, namespace::GRPC).map(|s| s.to_string()).filter(|s| !s.is_empty());
	let local_name = namespace::SHAPE
		.try_get_utf8(row, namespace::LOCAL_NAME)
		.filter(|s| !s.is_empty())
		.unwrap_or_else(|| name.rsplit_once("::").map(|(_, s)| s).unwrap_or(&name))
		.to_string();

	if let Some(address) = grpc {
		let token = namespace::SHAPE
			.try_get_utf8(row, namespace::TOKEN)
			.map(|s| s.to_string())
			.filter(|s| !s.is_empty());
		Namespace::Remote {
			id,
			name,
			local_name,
			parent_id,
			address,
			token,
		}
	} else {
		Namespace::Local {
			id,
			name,
			local_name,
			parent_id,
		}
	}
}