reifydb-transaction 0.4.5

Transaction management and concurrency control for ReifyDB
Documentation 
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// SPDX-License-Identifier: Apache-2.0
// Copyright (c) 2025 ReifyDB

use reifydb_core::interface::catalog::{
	change::CatalogTrackSubscriptionChangeOperations, id::SubscriptionId, subscription::Subscription,
};
use reifydb_type::Result;

use crate::{
	change::{
		Change,
		OperationType::{Create, Delete, Update},
		TransactionalSubscriptionChanges,
	},
	transaction::{admin::AdminTransaction, subscription::SubscriptionTransaction},
};

impl CatalogTrackSubscriptionChangeOperations for AdminTransaction {
	fn track_subscription_created(&mut self, subscription: Subscription) -> Result<()> {
		let change = Change {
			pre: None,
			post: Some(subscription),
			op: Create,
		};
		self.changes.add_subscription_change(change);
		Ok(())
	}

	fn track_subscription_updated(&mut self, pre: Subscription, post: Subscription) -> Result<()> {
		let change = Change {
			pre: Some(pre),
			post: Some(post),
			op: Update,
		};
		self.changes.add_subscription_change(change);
		Ok(())
	}

	fn track_subscription_deleted(&mut self, subscription: Subscription) -> Result<()> {
		let change = Change {
			pre: Some(subscription),
			post: None,
			op: Delete,
		};
		self.changes.add_subscription_change(change);
		Ok(())
	}
}

impl TransactionalSubscriptionChanges for AdminTransaction {
	fn find_subscription(&self, id: SubscriptionId) -> Option<&Subscription> {
		for change in self.changes.subscription.iter().rev() {
			if let Some(subscription) = &change.post {
				if subscription.id == id {
					return Some(subscription);
				}
			} else if let Some(subscription) = &change.pre {
				if subscription.id == id && change.op == Delete {
					return None;
				}
			}
		}
		None
	}

	fn is_subscription_deleted(&self, id: SubscriptionId) -> bool {
		self.changes
			.subscription
			.iter()
			.rev()
			.any(|change| change.op == Delete && change.pre.as_ref().map(|s| s.id) == Some(id))
	}
}

impl CatalogTrackSubscriptionChangeOperations for SubscriptionTransaction {
	fn track_subscription_created(&mut self, subscription: Subscription) -> Result<()> {
		self.inner.track_subscription_created(subscription)
	}

	fn track_subscription_updated(&mut self, pre: Subscription, post: Subscription) -> Result<()> {
		self.inner.track_subscription_updated(pre, post)
	}

	fn track_subscription_deleted(&mut self, subscription: Subscription) -> Result<()> {
		self.inner.track_subscription_deleted(subscription)
	}
}

impl TransactionalSubscriptionChanges for SubscriptionTransaction {
	fn find_subscription(&self, id: SubscriptionId) -> Option<&Subscription> {
		self.inner.find_subscription(id)
	}

	fn is_subscription_deleted(&self, id: SubscriptionId) -> bool {
		self.inner.is_subscription_deleted(id)
	}
}