Getting "Can't read from file" error on online.swagger.io

[xiehan]

{
    "schemaValidationMessages": [{
        "level": "error",
        "message": "Can't read from file https://api.npr.org/documentation/beryllium/swagger.json"
    }]
}

https://api.npr.org/documentation/beryllium/swagger.json is accessible to the public, and I know that the validator used to work at least as of March 1st, when I last did some maintenance on our Swagger instance. (I opened a ticket in our system to follow up with some more maintenance for a future date, which is how I know when it was last confirmed working.) So sometime between then & today, the validator stopped working.

Any ideas?

[fehguy]

Hi, looks like this is caused because your server is taking a long time to respond:

$ time curl https://api.npr.org/documentation/beryllium/swagger.json > /dev/null
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  117k    0  117k    0     0  14909      0 --:--:--  0:00:08 --:--:-- 33264

real    0m8.063s
user    0m0.023s
sys 0m0.011s

We actually recently set the timeout on the validator badge to 2 seconds for both connect & read to avoid load issues. I can increase the read timeout but the connect timeout needs to be short.

Any chance you can add a cache on your side?

[xiehan]

Hmm, I see. I thought we had some caching on our side, but it looks like the Cache-Control header is messed up. I'll have to dig into our Apache settings.

Thanks!

[fehguy]

I will improve the error message and increase the read timeout. Connect timeout will stay at 2 sec though.