Ability to set different log level for the console and logfire

[stemarks]

Description

We have a scenario where we dont need all logs to go to logfire, for example debug logs, but we do want debug logs to be on the console.

Currently if sampling is implemented it impacts both the console and logfire logs without a workaround that im aware of.

[alexmojaki]

Here's a workaround:

from opentelemetry.exporter.otlp.proto.http.trace_exporter import OTLPSpanExporter
from opentelemetry.sdk.trace.export import BatchSpanProcessor

import logfire
from logfire._internal.exporters.wrapper import WrapperSpanExporter


class DontSendDebugLogs(WrapperSpanExporter):
    def export(self, spans):
        spans = [span for span in spans if span.attributes.get('logfire.level_num', 9) >= 9]
        return super().export(spans)


logfire.configure(
    send_to_logfire=False,
    console=logfire.ConsoleOptions(min_log_level='debug'),
    additional_span_processors=[
        BatchSpanProcessor(
            DontSendDebugLogs(
                OTLPSpanExporter(
                    endpoint='https://logfire-api.pydantic.dev/v1/traces',
                    headers={'Authorization': 'your-write-token'},
                )
            )
        )
    ],
)

logfire.debug('debug')
with logfire.span('my-span'):
    logfire.error('error')

However this misses some of the features of the exporter that logfire.configure(send_to_logfire=True) creates, namely pending spans and retrying.