Describe your environment

Python version: Python 3.9.21
SDK version: 1.30.0.dev
API version: 1.30.0.dev

What happened?

Spans, metrics, and logs with instrumentation scope attributes and a schema url set are missing this data when exporting to otlp proto messages. Encoding the instrumentation scope schema url and attributes are missing from opentelemetry-exporter-otlp-proto-common

Steps to Reproduce

1. Add a schema url and attributes when getting a meter, tracer, or logger.
2. Create and record a span, metric, or log record
3. Export to an otel-collector with the otlp grpc receiver and debug exporter configured

Expected Result

The instrumentation scope schema url and attributes should show up in the otel-collector debug output

Actual Result

The instrumentation scope schema url and attributes are missing

Additional context

The _encode_instrumentation_scope method is not encoding the attributes

• exporter/otlp/proto/common/_internal/init.py#L61

Logs encoder is not setting the ScopeLogs.schema_url

• _log_encoder/init.py#L82

Metrics encoder is not using the _encode_instrumentation_scope method and is not setting the ScopeMetrics.schema_url

• metrics_encoder/init.py#L222

Trace encoder doesn't set the ScopeSpans.schema_url

• trace_encoder/init.py#L89

Would you like to implement a fix?

Yes