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aaeda2e5ac
- Completely remove nylas-long-connection.coffee file and consolidate all logic into
nylas-long-connection.es6 and worker-sync/delta-streaming-connection.es6:
- Separate it into DeltaStreamingConnection which is specific to the worker-sync
package for handling deltas
- NylasLongConnection is a "reusable" persistent connection to our API
which is also used by the search package
- This is a basically a fixed revision of https://phab.nylas.com/D2875,
see difff for more info
- Makes it so delta streaming does not retry so aggressively on 403s, which
happens whenever a user’s trial has expired
73 lines
2 KiB
JavaScript
73 lines
2 KiB
JavaScript
import {NylasLongConnection, DatabaseStore} from 'nylas-exports'
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const {Status} = NylasLongConnection
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class DeltaStreamingConnection extends NylasLongConnection {
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constructor(api, accountId, opts = {}) {
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opts.debounceInterval = 1000
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opts.closeIfDataStopsInterval = 15 * 1000
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super(api, accountId, opts)
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const {ready, getCursor, setCursor, setStatus} = opts
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this._ready = ready
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this._getCursor = getCursor
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this._setCursor = setCursor
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// Override super class instance vars
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this._onStatusChanged = setStatus
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this._onError = (err) => {
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if (err.message.indexOf('Invalid cursor') > 0) {
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const error = new Error('Delta Connection: Cursor is invalid. Need to blow away local cache.')
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NylasEnv.config.unset(`nylas.${this._accountId}.cursor`)
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DatabaseStore._handleSetupError(error)
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}
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}
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}
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deltaStreamingPath(cursor) {
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return `/delta/streaming?cursor=${cursor}&exclude_folders=false&exclude_metadata=false&exclude_account=false`
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}
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hasCursor() {
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return !!this._getCursor()
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}
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latestCursor() {
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const cursor = this._getCursor()
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if (cursor) { return Promise.resolve(cursor) }
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return this._api.makeRequest({
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path: "/delta/latest_cursor",
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accountId: this._accountId,
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method: 'POST',
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})
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.then((result) => {
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console.log(`Obtained stream cursor ${result.cursor}.`)
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this._setCursor(result.cursor)
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return Promise.resolve(result.cursor)
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})
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}
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onDeltas(callback) {
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return this.onResults(callback)
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}
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start() {
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if (!this._ready()) { return }
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if (!this.canStart()) { return }
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if (this._req != null) { return }
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this.latestCursor().then((cursor) => {
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if (this._status === Status.Ended) { return }
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this._path = this.deltaStreamingPath(cursor)
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super.start()
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})
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.catch((error) => {
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console.error(`Can't establish DeltaStreamingConnection: Error fetching latest cursor`, error)
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})
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}
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}
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export default DeltaStreamingConnection
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