Some stuff

2026-08-04 22:02:01 +01:00
parent 4ba21094ca
commit 8faa717ebb
22 changed files with 2349 additions and 173 deletions
@@ -0,0 +1,93 @@
+/**
+ * @typedef MigrationContext
+ * @property {import('sequelize').QueryInterface} queryInterface - a suquelize QueryInterface object.
+ * @property {import('../Logger')} logger - a Logger object.
+ *
+ * @typedef MigrationOptions
+ * @property {MigrationContext} context - an object containing the migration context.
+ */
+
+/**
+ * This upward migration script adds indexes to speed up queries on the `BookAuthor`, `BookSeries`, and `podcastEpisodes` tables.
+ *
+ * @param {MigrationOptions} options - an object containing the migration context.
+ * @returns {Promise<void>} - A promise that resolves when the migration is complete.
+ */
+async function up({ context: { queryInterface, logger } }) {
+  // Upwards migration script
+  logger.info('[2.15.2 migration] UPGRADE BEGIN: 2.15.2-index-creation')
+
+  // Create index for bookAuthors
+  logger.info('[2.15.2 migration] Creating index for bookAuthors')
+  const bookAuthorsIndexes = await queryInterface.showIndex('bookAuthors')
+  if (!bookAuthorsIndexes.some((index) => index.name === 'bookAuthor_authorId')) {
+    await queryInterface.addIndex('bookAuthors', ['authorId'], {
+      name: 'bookAuthor_authorId'
+    })
+  } else {
+    logger.info('[2.15.2 migration] Index bookAuthor_authorId already exists')
+  }
+
+  // Create index for bookSeries
+  logger.info('[2.15.2 migration] Creating index for bookSeries')
+  const bookSeriesIndexes = await queryInterface.showIndex('bookSeries')
+  if (!bookSeriesIndexes.some((index) => index.name === 'bookSeries_seriesId')) {
+    await queryInterface.addIndex('bookSeries', ['seriesId'], {
+      name: 'bookSeries_seriesId'
+    })
+  } else {
+    logger.info('[2.15.2 migration] Index bookSeries_seriesId already exists')
+  }
+
+  // Delete existing podcastEpisode index
+  logger.info('[2.15.2 migration] Deleting existing podcastEpisode index')
+  await queryInterface.removeIndex('podcastEpisodes', 'podcast_episodes_created_at')
+
+  // Create index for podcastEpisode and createdAt
+  logger.info('[2.15.2 migration] Creating index for podcastEpisode and createdAt')
+  const podcastEpisodesIndexes = await queryInterface.showIndex('podcastEpisodes')
+  if (!podcastEpisodesIndexes.some((index) => index.name === 'podcastEpisode_createdAt_podcastId')) {
+    await queryInterface.addIndex('podcastEpisodes', ['createdAt', 'podcastId'], {
+      name: 'podcastEpisode_createdAt_podcastId'
+    })
+  } else {
+    logger.info('[2.15.2 migration] Index podcastEpisode_createdAt_podcastId already exists')
+  }
+
+  // Completed migration
+  logger.info('[2.15.2 migration] UPGRADE END: 2.15.2-index-creation')
+}
+
+/**
+ * This downward migration script removes the newly created indexes and re-adds the old index on the `podcastEpisodes` table.
+ *
+ * @param {MigrationOptions} options - an object containing the migration context.
+ * @returns {Promise<void>} - A promise that resolves when the migration is complete.
+ */
+async function down({ context: { queryInterface, logger } }) {
+  // Downward migration script
+  logger.info('[2.15.2 migration] DOWNGRADE BEGIN: 2.15.2-index-creation')
+
+  // Remove index for bookAuthors
+  logger.info('[2.15.2 migration] Removing index for bookAuthors')
+  await queryInterface.removeIndex('bookAuthors', 'bookAuthor_authorId')
+
+  // Remove index for bookSeries
+  logger.info('[2.15.2 migration] Removing index for bookSeries')
+  await queryInterface.removeIndex('bookSeries', 'bookSeries_seriesId')
+
+  // Delete existing podcastEpisode index
+  logger.info('[2.15.2 migration] Deleting existing podcastEpisode index')
+  await queryInterface.removeIndex('podcastEpisodes', 'podcastEpisode_createdAt_podcastId')
+
+  // Create index for podcastEpisode and createdAt
+  logger.info('[2.15.2 migration] Creating original index for podcastEpisode createdAt')
+  await queryInterface.addIndex('podcastEpisodes', ['createdAt'], {
+    name: 'podcast_episodes_created_at'
+  })
+
+  // Finished migration
+  logger.info('[2.15.2 migration] DOWNGRADE END: 2.15.2-index-creation')
+}
+
+module.exports = { up, down }