From 0710fe96723c0b794240cf9d622578089662c391 Mon Sep 17 00:00:00 2001
From: Jack Berg <jberg@newrelic.com>
Date: Thu, 10 Oct 2024 13:36:20 -0500
Subject: [PATCH 1/2] Add .meter_provider.exemplar_filter property

---
 examples/kitchen-sink.yaml         |  2 ++
 examples/sdk-config.yaml           |  2 ++
 examples/sdk-migration-config.yaml |  3 ++-
 schema/meter_provider.json         | 10 ++++++++++
 schema/type_descriptions.yaml      |  1 +
 5 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/examples/kitchen-sink.yaml b/examples/kitchen-sink.yaml
index 04f2a31..d9e56f0 100644
--- a/examples/kitchen-sink.yaml
+++ b/examples/kitchen-sink.yaml
@@ -213,6 +213,8 @@ meter_provider:
           # Configure list of attribute keys to exclude from the resulting stream(s). Applies after .attribute_keys.included (i.e. excluded has higher priority than included).
           excluded:
             - key3
+  # Configure the exemplar filter. Known values include: trace_based, always_on, always_off.
+  exemplar_filter: trace_based
 
 # Configure text map context propagators.
 propagator:
diff --git a/examples/sdk-config.yaml b/examples/sdk-config.yaml
index 71dad2d..57390d6 100644
--- a/examples/sdk-config.yaml
+++ b/examples/sdk-config.yaml
@@ -139,6 +139,8 @@ meter_provider:
             temporality_preference: cumulative
             # Configure default histogram aggregation.
             default_histogram_aggregation: explicit_bucket_histogram
+  # Configure the exemplar filter. Known values include: trace_based, always_on, always_off.
+  exemplar_filter: trace_based
 
 # Configure logger provider.
 logger_provider:
diff --git a/examples/sdk-migration-config.yaml b/examples/sdk-migration-config.yaml
index a1b842a..1f9ca44 100644
--- a/examples/sdk-migration-config.yaml
+++ b/examples/sdk-migration-config.yaml
@@ -25,7 +25,6 @@
 # - OTEL_TRACES_EXPORTER
 # - OTEL_METRICS_EXPORTER
 # - OTEL_LOGS_EXPORTER
-# - OTEL_METRICS_EXEMPLAR_FILTER
 # - OTEL_EXPORTER_OTLP_PROTOCOL
 # - OTEL_EXPORTER_OTLP_ENDPOINT
 # - OTEL_EXPORTER_OTLP_INSECURE, OTEL_EXPORTER_OTLP_{SIGNAL}_INSECURE
@@ -177,6 +176,8 @@ meter_provider:
             temporality_preference: ${OTEL_EXPORTER_OTLP_METRICS_TEMPORALITY_PREFERENCE:-cumulative}
             # Configure default histogram aggregation.
             default_histogram_aggregation: ${OTEL_EXPORTER_OTLP_METRICS_DEFAULT_HISTOGRAM_AGGREGATION:-explicit_bucket_histogram}
+  # Configure the exemplar filter. Known values include: trace_based, always_on, always_off.
+  exemplar_filter: ${OTEL_METRICS_EXEMPLAR_FILTER:-trace_based}
 
 # Configure logger provider.
 logger_provider:
diff --git a/schema/meter_provider.json b/schema/meter_provider.json
index 461ec30..b5eeebf 100644
--- a/schema/meter_provider.json
+++ b/schema/meter_provider.json
@@ -16,6 +16,16 @@
             "items": {
                 "$ref": "#/$defs/View"
             }
+        },
+        "exemplar_filter": {
+            "type": {
+                "enum": [
+                    null,
+                    "always_on",
+                    "always_off",
+                    "trace_based"
+                ]
+            }
         }
     },
     "$defs": {
diff --git a/schema/type_descriptions.yaml b/schema/type_descriptions.yaml
index 5abfefa..12ea1ab 100644
--- a/schema/type_descriptions.yaml
+++ b/schema/type_descriptions.yaml
@@ -203,6 +203,7 @@
   property_descriptions:
     readers: Configure metric readers.
     views: Configure views. Each view has a selector which determines the instrument(s) it applies to, and a configuration for the resulting stream(s).
+    exemplar_filter: "Configure the exemplar filter. Known values include: trace_based, always_on, always_off."
   path_patterns:
     - .meter_provider
 

From 5779b13ef2ca28d069070811db6ce6f8ace869a0 Mon Sep 17 00:00:00 2001
From: Jack Berg <jberg@newrelic.com>
Date: Thu, 10 Oct 2024 13:41:53 -0500
Subject: [PATCH 2/2] Fix build

---
 schema/meter_provider.json | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/schema/meter_provider.json b/schema/meter_provider.json
index b5eeebf..7a2d288 100644
--- a/schema/meter_provider.json
+++ b/schema/meter_provider.json
@@ -18,14 +18,12 @@
             }
         },
         "exemplar_filter": {
-            "type": {
-                "enum": [
-                    null,
-                    "always_on",
-                    "always_off",
-                    "trace_based"
-                ]
-            }
+            "type": ["string", "null"],
+            "enum": [
+                "always_on",
+                "always_off",
+                "trace_based"
+            ]
         }
     },
     "$defs": {