add log_level configuration (#121)

This is to support the env variable OTEL_LOG_LEVEL.

Fixes #120

---------

Signed-off-by: Alex Boten <[email protected]>

Author: codeboten

examples/kitchen-sink.yaml

@@ -12,6 +12,9 @@ file_format: "0.3"
 # Configure if the SDK is disabled or not.
 # If omitted or null, false is used.
 disabled: false
+# Configure the log level of the internal logger used by the SDK.
+# If omitted, info is used.
+log_level: info
 # Configure general attribute limits. See also tracer_provider.limits, logger_provider.limits.
 attribute_limits:
   # Configure max attribute value size. 

examples/sdk-config.yaml

@@ -12,6 +12,9 @@ file_format: "0.3"
 # Configure if the SDK is disabled or not.
 # If omitted or null, false is used.
 disabled: false
+# Configure the log level of the internal logger used by the SDK.
+# If omitted, info is used.
+log_level: info
 # Configure resource for all signals.
 # If omitted, the default resource is used.
 resource:

examples/sdk-migration-config.yaml

@@ -14,7 +14,6 @@
 # for more information. The following spec defined env vars are NOT referenced and are thus
 # ignored:
 #
-# - OTEL_LOG_LEVEL
 # - OTEL_PROPAGATORS
 # - OTEL_TRACES_SAMPLER
 # - OTEL_TRACES_SAMPLER_ARG
@@ -41,6 +40,9 @@ file_format: "0.3"
 # Configure if the SDK is disabled or not.
 # If omitted or null, false is used.
 disabled: ${OTEL_SDK_DISABLED:-false}
+# Configure the log level of the internal logger used by the SDK.
+# If omitted, info is used.
+log_level: ${OTEL_LOG_LEVEL:-info}
 # Configure resource for all signals.
 # If omitted, the default resource is used.
 resource:

schema/opentelemetry_configuration.json

@@ -11,6 +11,9 @@
         "disabled": {
             "type": ["boolean", "null"]
         },
+        "log_level": {
+            "type": ["string", "null"]
+        },
         "attribute_limits": {
             "$ref": "#/$defs/AttributeLimits"
         },

schema/type_descriptions.yaml

@@ -23,6 +23,10 @@
       Configure if the SDK is disabled or not.
       
       If omitted or null, false is used.
+    log_level: >
+      Configure the log level of the internal logger used by the SDK.
+
+      If omitted, info is used.
     resource: >
       Configure resource for all signals.