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Add a beforeSqlSave callback to ReplaySpecializer (#1062)

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* Add a beforeSqlSave callback to ReplaySpecializer

When in the Datastore-primary and SQL-secondary stage, we will want to
save the EppResource-at-this-point-in-time field in the *History
objects so that later on we can examine the *History objects to see what
the resource looked like at that point in time.

Without this PR, the full object at that point in time would be lost
during the asynchronous replay since Datastore doesn't know about it.

In addition, we modify the HistoryEntry weight / priority so that
additions to it come after the additions to the resource off of which it
is based. As a result, we need to DEFER some foreign keys so that we can
write the billing / poll message objects before the history object that
they're referencing.
This commit is contained in:
gbrodman
2021-04-12 12:11:20 -04:00
committed by GitHub
parent 020273b184
commit 92dcacf78c
14 changed files with 202 additions and 93 deletions
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db/src/main/resources/sql/flyway/V91__defer_fkeys.sql
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-- Copyright 2021 The Nomulus Authors. All Rights Reserved.
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
-- We require that *History table writes come after their corresponding
-- EppResource writes when replaying transactions from Datastore.
-- The alterations here serve to break cycles necessary to write the
-- resource first.
ALTER TABLE "BillingEvent" DROP CONSTRAINT fk_billing_event_domain_history;
ALTER TABLE "BillingEvent" ADD CONSTRAINT fk_billing_event_domain_history
FOREIGN KEY (domain_repo_id, domain_history_revision_id)
REFERENCES "DomainHistory"(domain_repo_id, history_revision_id)
DEFERRABLE INITIALLY DEFERRED;
ALTER TABLE "BillingRecurrence" DROP CONSTRAINT fk_billing_recurrence_domain_history;
ALTER TABLE "BillingRecurrence" ADD CONSTRAINT fk_billing_recurrence_domain_history
FOREIGN KEY (domain_repo_id, domain_history_revision_id)
REFERENCES "DomainHistory"(domain_repo_id, history_revision_id)
DEFERRABLE INITIALLY DEFERRED;
ALTER TABLE "BillingCancellation" DROP CONSTRAINT fk_billing_cancellation_domain_history;
ALTER TABLE "BillingCancellation" ADD CONSTRAINT fk_billing_cancellation_domain_history
FOREIGN KEY (domain_repo_id, domain_history_revision_id)
REFERENCES "DomainHistory"(domain_repo_id, history_revision_id)
DEFERRABLE INITIALLY DEFERRED;
ALTER TABLE "PollMessage" DROP CONSTRAINT fk_poll_message_domain_history;
ALTER TABLE "PollMessage" ADD CONSTRAINT fk_poll_message_domain_history
FOREIGN KEY (domain_repo_id, domain_history_revision_id)
REFERENCES "DomainHistory"(domain_repo_id, history_revision_id)
DEFERRABLE INITIALLY DEFERRED;
ALTER TABLE "PollMessage" DROP CONSTRAINT fk_poll_message_contact_history;
ALTER TABLE "PollMessage" ADD CONSTRAINT fk_poll_message_contact_history
FOREIGN KEY (contact_repo_id, contact_history_revision_id)
REFERENCES "ContactHistory"(contact_repo_id, history_revision_id)
DEFERRABLE INITIALLY DEFERRED;