SHDH23 presentation about web hooks - lightweight event-triggered web plumbing

1. Near-Real-Time, Simple awesomeness
Web Hooks
nathan@pbwiki.com
coming soon!

2. Recall From SHDH 17
Jeff Lindsay’s
“Web hooks”
lightning talk
• RSS relies on polling.
• Polling is lame.
• Syndication and
(re)publishing, not
triggering

3. Recall From SHDH 17
Jeff Lindsay’s
“Web hooks”
NO
lightning talk
• Often n consumers.
• Not 1000n.
• Polling is still lame.
(for some things) • Are we there yet?
• Are we there yet?
• Are we there yet?

4. Recall From SHDH 17
Jeff Lindsay’s
“Web hooks”
lightning talk
• Event-driven.
• Lightweight.
• POST to a URL.

5. Recall From SHDH 17
Jeff Lindsay’s
“Web hooks”
OLD LOGO
lightning talk
• Event-driven.
• Lightweight.
• POST to a URL.

6. Web hooks in practice
//something ...
hook_trigger(‘viewpage’);
//more stuff..
async
async
while(1) {
while($queued = $q->get(‘async-queue’)) {
post_to_url($queued[‘url’],$queued[‘postargs’]);
}
}

7. Web hooks in practice
Example hooked events
• login/logout
• edit a page
• revert a page
• delete a page
• comment on a page
• tag/untag pages
• join/unjoin wiki
• return_after_absence
• view_for_first_time

8. Web hooks in practice

9. Web hooks in practice

10. Web hooks in practice

11. Web hooks in practice

12. Web hooks in practice

13. I want this to exist:
Trigger Filter Branch/Merge Transform Route
$page =~ $to = $msg =
out_aim($to,$msg)
/deploy/i [‘devel@’,ops@’] fmt_to_aim($attrs)
$uid == $to = @all_sms; $msg =
out_sms($to,$msg)
da39a3ee5e6b4b unset($to[$uid]); fmt_to_sms($attrs)
incoming web hook
$msg = “Wow
$viewcount == 100 $to = $emails[$uid] out_email($to,$msg)
you’re a power user”
$to = [‘http://my.com/’,
$op == ‘edit’ $msg = $attrs out_hook($to,$msg);
‘http://twittr.com/me’]
= awesome but only polling (RSS)