shadow orchid
Has anyone who's installed the tech insights plugin had an issue where it throws a 404 after following the directions in the readme?
[1] 2022-10-25T21:20:10.829Z backstage info ::1 - - [25/Oct/2022:21:20:10 +0000] "POST /api/tech-insights/checks/run/default/Component/Imagine_Learning_Guidebooks HTTP/1.1" 404 - "http://localhost:3000/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36" type=incomingRequest```
vivid jacinth
Hi @shadow orchid, I haven't seen this myself but we haven't really done much with TechInsights beyond a POC due to priority changes. But I'm wondering if maybe it's related to what this PR says it fixes: https://github.com/backstage/backstage/pull/14135
To be honest it's not totally clear what the bug is/was so I could be off. @tardy jackal noticed you left a comment on that, any insight (pun intended 😉 )?
shadow orchid
I saw that @lost swan also was apart of that PR or another.
It is a 404 not some sort of failure because of the content type
vivid jacinth
Ah, ok
smoky yew
can confirm, I'm also seeing this ... any idea how these routes are supposed to get set up?
I'm grep-ing the codebase like an old man and swearing
here's the code for the client part of the frontend that seems to be making the XHR that I can see failing in the browser dev tools: https://github.com/backstage/backstage/blob/master/plugins/tech-insights/src/api/TechInsightsClient.ts#L72-L87
smoky yew
oh, cool, I'm hitting this case https://github.com/backstage/backstage/blob/master/plugins/tech-insights-backend/src/service/router.ts#L118-L121
... and I guess that's because I need to give it the json rules fact checker ...
ok, this is the solution, just follow more of the docs ... https://github.com/backstage/backstage/tree/master/plugins/tech-insights-backend#adding-a-fact-checker
yup, that did it
shadow orchid
That did it for me too! I know the docs weren't super clear on that. I'll probably open a PR on it to clear that up.
marsh wasp
I know the docs might need a lot more work for paths outside the happy one. It would be very helpful if you could add/modify few lines in there to match your experience 🙏
delicate sparrow
@shadow orchid Can you please help me figure out the error? I am facing the same error as you. I did use fact checker, but it didn't solve the error.
unique verge
Hi guys, getting 404, when using tech-insights. any idea what might be wrong?
fast palm
@unique verge you should start a new thread
unique verge
Adding the issue & solution here for future reference:
plugins required in the packages/backend
"@backstage/plugin-tech-insights-backend": "^0.5.12",
"@backstage/plugin-tech-insights-backend-module-jsonfc": "^0.1.30",
~~ "@backstage/plugin-tech-insights-node": "^0.4.4",~~
removing plugin-tech-insights-node resolved the issue
also adding a sample techInsights.ts to test the plugin
for frontend, follow the steps as it is mentioned in the documentation
terse falcon
Sorry folks reviving this thread in 2025...
Followed the two readme:
https://github.com/backstage/community-plugins/tree/main/workspaces/tech-insights
https://github.com/backstage/community-plugins/tree/main/workspaces/tech-insights/plugins/tech-insights-backend
And on the route /tech-insights having this 404 error...
I want to add this module just to get more insight on my facts/checks for a given entity and I am not really interested in these FactRetrievers
In my app logs I see:
[backend]: 2025-04-15T16:50:46.417Z backstage info Plugin initialization started: 'app', 'proxy', 'scaffolder', 'techdocs', 'auth', 'catalog', 'permission', 'search', 'kubernetes', 'skill-exchange', 'soundcheck', 'rbac', 'tech-insights', 'pagerduty', 'homepage' type="initialization"
...
[backend]: 2025-04-15T16:50:47.615Z backstage info Plugin initialization complete, newly initialized: 'skill-exchange', 'rbac', 'tech-insights', 'pagerduty', 'soundcheck', 'homepage' type="initialization"
As well as:
[backend]: 2025-04-15T16:50:47.560Z tech-insights info Scheduled 0/0 fact retrievers into the tech-insights engine
[backend]: 2025-04-15T16:50:47.560Z tech-insights info Starting tech insights module without fact checking endpoints.
vital citrus
NOTE: You need a Fact Checker configured to get access to the backend routes that will allow the facts to be checked. If you don't have one configured, you will see 404s and potentially other errors.
Your logs
[backend]: 2025-04-15T16:50:47.560Z tech-insights info Starting tech insights module without fact checking endpoints.
Do you have the @backstage-community/plugin-tech-insights-backend-module-jsonfc module installed?