MySQL Alpha Support #111
MySQL Alpha Support #111
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…onfig. Added DatabaseSchemaV2 type to remove Postgres fields.
Some cleanup of modules package.json
Filter out tables not in sync rules Improve abort logic handling
Using updated binlog listener package
Replication Modules now implement this interface. Removed singleton module exports
… to stop unwanted timezone skew Added serverId configuration Added check for binlog existence before starting replication.
🦋 Changeset detectedLatest commit: 7c073b1 The changes in this PR will be included in the next version bump. This PR includes changesets to release 8 packages
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feat/modular-replication-architecture
| # The service needs to be restarted for changes to take effect. | ||
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| # Note that specifying the schema is currently required due to the default | ||
| # schema being specified as `public`, but in mysql the schema is the database name |
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Is this still the case, with defaultSchema now being the database name?
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No you are right, no longer needed :)
| // await connection.query(`DROP DATABASE IF EXISTS ${TEST_CONNECTION_OPTIONS.database}`); | ||
| // | ||
| // await connection.query(`CREATE DATABASE IF NOT EXISTS ${TEST_CONNECTION_OPTIONS.database}`); |
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Can these comments be removed?
| "@powersync/service-core": "workspace:*", | ||
| "@powersync/service-sync-rules": "workspace:*", | ||
| "@powersync/service-types": "workspace:*", | ||
| "@powersync/mysql-zongji": "0.0.0-dev-20241023144335", |
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It would be good to get a proper release out for this.
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Definitely. I'm still struggling with an issue where the testing framework of that zongji lib causes the build to fail even though all the tests pass. That is currently the main blocker for getting out a proper released version.
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Alpha support for MySQL as a replication datasource
Replication for MySQL is handled by listening for changes on the binlog which is similar to Postgres' write ahead log.
We use a forked version of the Zongji MySQL Binlog listener library that has been customised to our needs:
https://github.com/powersync-ja/powersync-mysql-zongji
Demo app and backend is available here:
https://github.com/powersync-ja/self-host-demo/blob/main/demos/nodejs-mysql/README.md
Some additional configuration is necessary for your instance of MySQL to enable the binlog. A MySQL user should also be created with the required permissions for Powersync to perform the replication.
https://github.com/powersync-ja/self-host-demo/tree/main/services/mysql/init-scripts