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<blockquote style="position: relative; padding-left: 55px;"><section><a href="https://mastodon.ar.al/users/aral/statuses/112383611784788283">Aral Balkan (aral@mastodon.ar.al)'s status on Sunday, 05-May-2024 00:51:03 JST</a><a href="https://mastodon.ar.al/@aral" title="aral@mastodon.ar.al"><img src="https://gnusocial.jp/theme/gnusocialjp/default-avatar-stream.png" width="48" height="48" alt="Aral Balkan" style="position: absolute; left: 0; top: 0;">Aral Balkan</a><div><a href="https://mastodon.ar.al/@aral/112383409759847597" rel="in-reply-to">in reply to</a></div></section><article><p>🎉 Got database backup and restore working in Kitten (so every Kitten app gets it for free) and, with the new JSDB 5 support in Kitten, you can now make your model classes EventEmitters.</p><p>The session object is now an EventEmitter so you can now listen for events on the current session. In fact, I did just that in Kitten itself to implement the upload of the backup file during the restore process to make the Streaming HTML handler get notified once the POST route has the upload.</p><p><a href="https://mastodon.ar.al/tags/SmallWeb" rel="tag">#SmallWeb</a> <a href="https://mastodon.ar.al/tags/Kitten" rel="tag">#Kitten</a></p></article><footer><a rel="bookmark" href="https://gnusocial.jp/conversation/3038782#notice-6028502">In conversation</a><time datetime="2024-05-05T00:51:03+09:00" title="Sunday, 05-May-2024 00:51:03 JST">about a year ago</time> <span>from <span><a href="https://mastodon.ar.al/@aral/112383611784788283" rel="external" title="Sent from mastodon.ar.al via ActivityPub">mastodon.ar.al</a></span></span><a href="https://mastodon.ar.al/@aral/112383611784788283">permalink</a><h4>Attachments</h4><ol><li><label><a rel="external" href="https://gnusocial.jp/attachment/2589422">Code listing of restore.post.js in Helix Editor:/**
  Receives a backup of Kitten databases to restore.
*/
export default function ({ request }) {
  // The event is broadcast on the session id.
  request.session.emit('databasesUploadedForRestore', request.uploads[0])
}</a></label><br><a href="https://s3-eu-central-1.amazonaws.com/mastodon-aral/media_attachments/files/112/383/600/038/759/768/original/45da2cedb6095ecd.png" rel="external">https://s3-eu-central-1.amazonaws.com/mastodon-aral/media_attachments/files/112/383/600/038/759/768/original/45da2cedb6095ecd.png</a></li><li><label><a rel="external" href="https://gnusocial.jp/attachment/2589423">Code listing (detail) of index.page.js in Helix Editor:const RestoreStatusUpdate = ({SLOT}) =&gt; kitten.html`
  &lt;div id='restore-status' class='progress'&gt;
    &lt;${ProgressIndicator} /&gt;
    ${SLOT}
  &lt;/div&gt;
`export function onConnect ({request, page}) {
  page.on('startRestore', () =&gt; {
    page.send(kitten.html`&lt;${RestoreStatusUpdate}&gt;Uploading backup to restore from…&lt;/&gt;`)
  })  const restoreDatabases = async (/** @type {Upload} */ upload) =&gt; {
    console.log('Restore: database backup uploaded', upload)    // Show status indicator.
    page.send(kitten.html`&lt;${RestoreStatusUpdate}&gt;Restoring from backup…&lt;/&gt;`)    // Delete current databases.
    const deleteResult = await fs.rm(kitten.databaseDirectory, {recursive: true, force: true})    // Re-create databases directory.
    const makeDirectoryResult = await fs.mkdir(kitten.databaseDirectory)    // Decompress backed-up databases.
    await extract({
      cwd: kitten.databaseDirectory,
      file: upload.filePath
    })    // Send refresh header and restart the server so the
    // restored databases are loaded into memory.
    page.send(kitten.html`&lt;${RestoreStatusUpdate}&gt;Restore complete, waiting for server restart…`)    // Restart the server.
    process.exit(99 /* code for restart request */)
  }
  request.session.removeListener('databasesUploadedForRestore', restoreDatabases)
  request.session.addListener('databasesUploadedForRestore', restoreDatabases)</a></label><br><a href="https://s3-eu-central-1.amazonaws.com/mastodon-aral/media_attachments/files/112/383/600/481/486/638/original/a61cee66dc0a4ca4.png" rel="external">https://s3-eu-central-1.amazonaws.com/mastodon-aral/media_attachments/files/112/383/600/481/486/638/original/a61cee66dc0a4ca4.png</a></li></ol></footer></blockquote>

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Aral Balkan (aral@mastodon.ar.al)'s status on Sunday, 05-May-2024 00:51:03 JST Aral Balkan
in reply to
🎉 Got database backup and restore working in Kitten (so every Kitten app gets it for free) and, with the new JSDB 5 support in Kitten, you can now make your model classes EventEmitters.
The session object is now an EventEmitter so you can now listen for events on the current session. In fact, I did just that in Kitten itself to implement the upload of the backup file during the restore process to make the Streaming HTML handler get notified once the POST route has the upload.
#SmallWeb #Kitten
In conversationabout a year ago from mastodon.ar.alpermalink
Attachments
1. Code listing of restore.post.js in Helix Editor: /** Receives a backup of Kitten databases to restore. */ export default function ({ request }) { // The event is broadcast on the session id. request.session.emit('databasesUploadedForRestore', request.uploads[0]) }
  https://s3-eu-central-1.amazonaws.com/mastodon-aral/media_attachments/files/112/383/600/038/759/768/original/45da2cedb6095ecd.png
2. Code listing (detail) of index.page.js in Helix Editor: const RestoreStatusUpdate = ({SLOT}) => kitten.html` <div id='restore-status' class='progress'> <${ProgressIndicator} /> ${SLOT} </div> ` export function onConnect ({request, page}) { page.on('startRestore', () => { page.send(kitten.html`<${RestoreStatusUpdate}>Uploading backup to restore from…</>`) }) const restoreDatabases = async (/** @type {Upload} */ upload) => { console.log('Restore: database backup uploaded', upload) // Show status indicator. page.send(kitten.html`<${RestoreStatusUpdate}>Restoring from backup…</>`) // Delete current databases. const deleteResult = await fs.rm(kitten.databaseDirectory, {recursive: true, force: true}) // Re-create databases directory. const makeDirectoryResult = await fs.mkdir(kitten.databaseDirectory) // Decompress backed-up databases. await extract({ cwd: kitten.databaseDirectory, file: upload.filePath }) // Send refresh header and restart the server so the // restored databases are loaded into memory. page.send(kitten.html`<${RestoreStatusUpdate}>Restore complete, waiting for server restart…`) // Restart the server. process.exit(99 /* code for restart request */) } request.session.removeListener('databasesUploadedForRestore', restoreDatabases) request.session.addListener('databasesUploadedForRestore', restoreDatabases)
  https://s3-eu-central-1.amazonaws.com/mastodon-aral/media_attachments/files/112/383/600/481/486/638/original/a61cee66dc0a4ca4.png

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