49 lines
1.6 KiB
JavaScript
49 lines
1.6 KiB
JavaScript
import keyval from "idb-keyval"
|
|
import debounce from 'lodash/debounce'
|
|
import { OBJECT_STORE, getDatabase } from './shared'
|
|
|
|
const MAX_NUM_STORED_STATUSES = 1000
|
|
const CLEANUP_INTERVAL = 60000
|
|
|
|
async function cleanup(instanceName, timeline) {
|
|
const db = await getDatabase(instanceName, timeline)
|
|
return await new Promise((resolve, reject) => {
|
|
const tx = db.transaction(OBJECT_STORE, 'readwrite')
|
|
const store = tx.objectStore(OBJECT_STORE)
|
|
const index = store.index('pinafore_id_as_negative_big_int')
|
|
|
|
store.count().onsuccess = (e) => {
|
|
let count = e.target.result
|
|
if (count <= MAX_NUM_STORED_STATUSES) {
|
|
return
|
|
}
|
|
let openKeyCursor = index.openKeyCursor || index.openCursor
|
|
openKeyCursor.call(index, null, 'prev').onsuccess = (e) => {
|
|
let cursor = e.target.result
|
|
if (--count < MAX_NUM_STORED_STATUSES || !cursor) {
|
|
return
|
|
}
|
|
store.delete(cursor.primaryKey).onsuccess = () => {
|
|
cursor.continue()
|
|
}
|
|
}
|
|
}
|
|
tx.oncomplete = () => resolve()
|
|
tx.onerror = () => reject(tx.error.name + ' ' + tx.error.message)
|
|
})
|
|
}
|
|
|
|
export const cleanupOldStatuses = debounce(async () => {
|
|
if (process.env.NODE_ENV !== 'production') {
|
|
console.log('cleanupOldStatuses')
|
|
}
|
|
let knownDbs = (await keyval.get('known_dbs')) || {}
|
|
let dbNames = Object.keys(knownDbs)
|
|
for (let dbName of dbNames) {
|
|
let [ instanceName, timeline ] = knownDbs[dbName]
|
|
await cleanup(instanceName, timeline)
|
|
}
|
|
if (process.env.NODE_ENV !== 'production') {
|
|
console.log('done cleanupOldStatuses')
|
|
}
|
|
}, CLEANUP_INTERVAL) |