Stop using jQuery/ajax and use Fetch API instead

[tadayosi]

Relates #8

[phantomjinx]

Does this imply complete removal of JQuery as it is being used for parsing the XML of the camel routes? We could use something else but need to know whether to look for a replacement?

[tadayosi]

Good point. I only thought about the ajax query part of jQuery usages for the issue such as:
https://github.com/hawtio/hawtio-next/blob/main/packages/hawtio/src/plugins/connect/jolokia-service.ts#L111-L140
Yes, jQuery is also used to parse XML and it shouldn't be so easy to replace it with something else.

The motivation for this issue is to reduce as large a dependency as possible from Hawtio.next. In particular, large frameworks such as jQuery are often subject to CVEs, which means that they have to be upgraded every time. If Hawtio.next could do without jQuery, it would reduce the burden of security updates as much as possible.

This Issue has no specific milestones attached to it and does not need to be addressed now. However, it is recorded as it is something that would be beneficial to be addressed in the long term. If you have a good solution to replace something in the XML parsing part of jQuery, let's discuss it as well.

[phantomjinx]

I'm in the area of xml parsing atm so I can start to look around for an alternative and see if any do the job.

[grgrzybek]

I wasn't aware that jQuery is used for XML parsing ;)

I want to get rid of $.ajax call in favor of fetch() - Jolokia 2.1.0 already supports fetch() and doesn't rely on jQuery.

[phantomjinx]

I wasn't aware that jQuery is used for XML parsing ;)

I want to get rid of $.ajax call in favor of fetch() - Jolokia 2.1.0 already supports fetch() and doesn't rely on jQuery.

XML parsing did use jQuery but was replaced in this commit.

[grgrzybek]

I wasn't aware that jQuery is used for XML parsing ;)
I want to get rid of $.ajax call in favor of fetch() - Jolokia 2.1.0 already supports fetch() and doesn't rely on jQuery.

XML parsing did use jQuery but was replaced in this commit.

cool! so I may eventually remove it entirely ;)

[phantomjinx]

Still gets used by Hawtio-Online which may or may not have an impact on this issue.

[grgrzybek]

Does hawtio-online have own dependency (in package.json) on JQuery? Also it should have own import ... from 'jquery', right?

[phantomjinx]

Does hawtio-online have own dependency (in package.json) on JQuery? Also it should have own import ... from 'jquery', right?

Yes it does. It doesn't rely on hawtio-next for export of JQuery.

That's said Hawtio-Online does call on jolokia using ajax, eg. these

[grgrzybek]

I'll remove import $ from 'jquery' from hawtio-next, but I won't remove (for now?) jquery from @hawtio/react's package.json.

[tadayosi]

Yeah, we can finally try removing jQuery from hawtio-next. I think hawtio-online can declare a dependency to jQuery itself if it still needs it after hawtio-next's removal of it.