How to update headers in StableOtlpHTTPMetricExporter?

[JustasL]

Hello, is there are way to update StableOtlpHTTPMetricExporter headers after it has been setup?

We want to provide authorisation token, which can expire, and will need to be updated in the future
But at the moment it seems headers can only be setup during init?

[n-ravichandran]

I am unclear about their recommended approach for including the auth token in the header while using their exporter. Their exporter includes a URLSession parameter, so you could accomplish this by supplying a URLSession object that employs a custom URLProtocol to intercept requests. Within the interceptor protocol class, you can alter the request header to include the auth token. If your auth token has expired, you can also perform a token refresh there and continue the request with the new token.

[JustasL]

Thanks, I'll give it a try, but it looks a little bit overcomplicated solution to simple issue

[bryce-b]

@JustasL
You can pass headers to any of the Exporters through the OtlpConfiguration object as the config parameter in the initializer method.

[JustasL]

@bryce-b yeah, but it is constant, I can not update headers after the token has expired and has been updated

[bryce-b]

Would it be possible to re-create the exporter when you need to refresh the headers?
This will probably provide the quickest resolution for you, while we sort out a structural change that can accommodate this usage.

[JustasL]

I've chosen to go with custom URLProtocol where I override each request by adding auth header (as suggested by @n-ravichandran)
Should be fine for now, although for longer term I guess headers should be allowed to passed as a closure, like it's done on Android

[bryce-b]

@JustasL I'm having trouble finding where android provides a means to update the headers, could you share it?

[bryce-b]

refined issue: #651

[JustasL]

My android colleague is using this method