Unable to set Log Level using using OTEL_LOG_LEVEL

[raphael-gi]

When trying to set the Log Level to something like WARN or ERROR this should be possible via the environment variable OTEL_LOG_LEVEL.

Looking at the current implementation this is currently being done like this:

telemetry/lib/index.js

Line 63 in c2a762e

diag.setLogger(cds.log('telemetry'), process.env.OTEL_LOG_LEVEL || getDiagLogLevel())

The issue is that the library used (opentelemetry) checks if this value is of type number.

if (typeof optionsOrLogLevel === 'number') {
    optionsOrLogLevel = {
        logLevel: optionsOrLogLevel,
    };
}

Which it can't be since it is being read straight from process.env which has everything as strings.

Should this issue be fixed in opentelemetry or in this library?

[Raphael-Gisler-AGI]

Just saw that this is being worked on on branch otel-2.0. If the bug has been fixed there then this issue can be closed.