[WIP] Add log handler configuration to autoinstrumentation

CHANGELOG.md

@@ -195,6 +195,11 @@ can cause a deadlock to occur over `logging._lock` in some cases ([#4636](https:
 
 - typecheck: add sdk/resources and drop mypy
   ([#4578](https://github.com/open-telemetry/opentelemetry-python/pull/4578))
+- Refactor `BatchLogRecordProcessor` to simplify code and make the control flow more
+  clear ([#4562](https://github.com/open-telemetry/opentelemetry-python/pull/4562/)
+  and [#4535](https://github.com/open-telemetry/opentelemetry-python/pull/4535)).
+- Enable configuration of logging format and level in auto-instrumentation
+  ([#4203](https://github.com/open-telemetry/opentelemetry-python/pull/4203))
 - Use PEP702 for marking deprecations
   ([#4522](https://github.com/open-telemetry/opentelemetry-python/pull/4522))
 - Refactor `BatchLogRecordProcessor` and `BatchSpanProcessor` to simplify code

opentelemetry-sdk/src/opentelemetry/sdk/_configuration/__init__.py

@@ -52,6 +52,8 @@
     OTEL_EXPORTER_OTLP_METRICS_PROTOCOL,
     OTEL_EXPORTER_OTLP_PROTOCOL,
     OTEL_EXPORTER_OTLP_TRACES_PROTOCOL,
+    OTEL_PYTHON_LOG_FORMAT,
+    OTEL_PYTHON_LOG_HANDLER_LEVEL,
     OTEL_PYTHON_TRACER_CONFIGURATOR,
     OTEL_TRACES_SAMPLER,
     OTEL_TRACES_SAMPLER_ARG,
@@ -101,6 +103,15 @@
 
 _OTEL_SAMPLER_ENTRY_POINT_GROUP = "opentelemetry_traces_sampler"
 
+_OTEL_PYTHON_LOG_HANDLER_LEVEL_BY_NAME = {
+    "notset": logging.NOTSET,
+    "debug": logging.DEBUG,
+    "info": logging.INFO,
+    "warn": logging.WARNING,
+    "warning": logging.WARNING,
+    "error": logging.ERROR,
+}
+
 _logger = logging.getLogger(__name__)
 
 ExporterArgsMap = Mapping[
@@ -167,6 +178,13 @@ def _get_id_generator() -> str:
     return environ.get(OTEL_PYTHON_ID_GENERATOR, _DEFAULT_ID_GENERATOR)
 
 
+def _get_log_level() -> int:
+    return _OTEL_PYTHON_LOG_HANDLER_LEVEL_BY_NAME.get(
+        environ.get(OTEL_PYTHON_LOG_HANDLER_LEVEL, "notset").lower().strip(),
+        logging.NOTSET,
+    )
+
+
 def _get_tracer_configurator() -> str | None:
     return environ.get(OTEL_PYTHON_TRACER_CONFIGURATOR, None)
 
@@ -330,6 +348,15 @@ def _init_logging(
         handler = LoggingHandler(
             level=logging.NOTSET, logger_provider=provider
         )
+        # Log level
+        if OTEL_PYTHON_LOG_HANDLER_LEVEL in environ:
+            handler.setLevel(_get_log_level())
+        # Log format
+        if OTEL_PYTHON_LOG_FORMAT in environ:
+            log_format = environ.get(
+                OTEL_PYTHON_LOG_FORMAT, logging.BASIC_FORMAT
+            )
+            handler.setFormatter(logging.Formatter(log_format))
         logging.getLogger().addHandler(handler)
         _overwrite_logging_config_fns(handler)
 

opentelemetry-sdk/src/opentelemetry/sdk/environment_variables/__init__.py

@@ -54,6 +54,22 @@
 Default: "info"
 """
 
+OTEL_PYTHON_LOG_FORMAT = "OTEL_PYTHON_LOG_FORMAT"
+"""
+.. envvar:: OTEL_PYTHON_LOG_FORMAT
+
+The :envvar:`OTEL_PYTHON_LOG_FORMAT` environment variable sets the log format for the OpenTelemetry LoggingHandler's Formatter
+Default: "logging.BASIC_FORMAT"
+"""
+
+OTEL_PYTHON_LOG_HANDLER_LEVEL = "OTEL_PYTHON_LOG_HANDLER_LEVEL"
+"""
+.. envvar:: OTEL_PYTHON_LOG_HANDLER_LEVEL
+
+The :envvar:`OTEL_PYTHON_LOG_HANDLER_LEVEL` environment variable sets the log level for the OpenTelemetry LoggingHandler
+Default: "logging.NOTSET"
+"""
+
 OTEL_TRACES_SAMPLER = "OTEL_TRACES_SAMPLER"
 """
 .. envvar:: OTEL_TRACES_SAMPLER