Summary:
- We used to have connection-level caching, so we needed getTransactionKey() to make sure there was one transaction state per real connection. We now cache in Lisk and each Connection object is guaranteed to represent a real, unique connection, so we can make this a non-static.
- I kept the classes separate because it was a little easier, but maybe we should merge them?
- Also track/implement read/write locking.
- (The advantage of this over just writing LOCK IN SHARE MODE is that you can use, e.g., some Query class even if you don't have access to the queries it runs.)
Test Plan: Can you come up with a way to write unit tests for this? It seems like testing that it works requires deadlocking MySQL if the test is running in one process.
Reviewers: vrana, btrahan
Reviewed By: vrana
CC: aran
Differential Revision: https://secure.phabricator.com/D2398
Summary:
This addresses three issues with the current patch management system:
# Two people developing at the same time often pick the same SQL patch number, and then have to go rename it. The system catches this, but it's silly.
# Second/third-party developers can't use the same system to manage auxiliary storage they may want to add.
# There's no way to build mock databases for unit tests that need to do reads.
To resolve these things, you can now name your patches whatever you want and conflicts are just merge conflicts, which are less of a pain to fix than filename conflicts.
Dependencies are now a DAG, with implicit dependencies created on the prior patch if no dependencies are specified. Developers can add new concrete subclasses of `PhabricatorSQLPatchList` to add storage management, and define the dependency branchpoint of their patches so they apply in the correct order (although, generally, they should not depend on the mainline patches, presumably).
The commands `storage upgrade --namespace test1234` and `storage destroy --namespace test1234` will allow unit tests to build and destroy MySQL storage.
A "quickstart" mode allows an upgrade from scratch in ~1200ms. Destruction takes about 200ms. These seem like fairily reasonable costs to actually use in tests. Building from scratch patch-by-patch takes about 6000ms.
Test Plan:
- Created new databases from scratch with and without quickstart in a separate test namespace. Pointed the webapp at the test namespaces, browsed around, everything looked good.
- Compared quickstart and no-quickstart dump states, they're identical except for mysqldump timestamps and a few similar things.
- Upgraded a legacy database to the new storage format.
- Destroyed / dumped storage.
Reviewers: edward, vrana, btrahan, jungejason
Reviewed By: btrahan
CC: aran, nh
Maniphest Tasks: T140, T345
Differential Revision: https://secure.phabricator.com/D2323
Summary: Last of the big final patches. Left a few debatable classes (12 out of about 400) that I'll deal with individually eventually.
Test Plan: Ran testEverythingImplemented.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran, epriestley
Maniphest Tasks: T795
Differential Revision: https://secure.phabricator.com/D1881
Summary: These are because they forgot to upgrade_schema.php like 99% of the time.
Test Plan: Hit such an error, got a better error message than before.
Reviewers: btrahan, jungejason
Reviewed By: jungejason
CC: aran, epriestley
Differential Revision: https://secure.phabricator.com/D1786
Summary:
In a basically reasonable configuration where you connect
with a non-privileged user from the web workflow, upgrade_schema.php
won't have enough privileges. Allow the user to override the normal
auth with -u and -p.
Test Plan:
Tried to do a schema upgrade with an underprivileged user,
got a useful error message instead of garbage.
Reviewed By: Girish
Reviewers: Girish, davidrecordon, jungejason, tuomaspelkonen, aran
CC: aran, epriestley, Girish
Differential Revision: 191
