OPIK-1130: Fix AutomationRuleEvaluator Fern (#1670)

* OPIK-1130: Fix AutomationRuleEvaluator Fern

* Rev1: updated Open API spec and code

Author: andrescrz

apps/opik-backend/src/main/java/com/comet/opik/api/AutomationRuleEvaluator.java

@@ -1,5 +1,6 @@
 package com.comet.opik.api;
 
+import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonSubTypes;
 import com.fasterxml.jackson.annotation.JsonTypeInfo;
@@ -54,7 +55,7 @@ public abstract sealed class AutomationRuleEvaluator<T> implements AutomationRul
     @JsonView({View.Public.class, View.Write.class})
     private final Float samplingRate;
 
-    @JsonView({View.Public.class, View.Write.class})
+    @JsonIgnore
     @NotNull private final T code;
 
     @JsonView({View.Public.class})

apps/opik-backend/src/main/java/com/comet/opik/api/AutomationRuleEvaluatorLlmAsJudge.java

@@ -75,9 +75,19 @@ public AutomationRuleEvaluatorLlmAsJudge(UUID id, UUID projectId, String project
         super(id, projectId, projectName, name, samplingRate, code, createdAt, createdBy, lastUpdatedAt, lastUpdatedBy);
     }
 
+    /**
+     * Two purposes:
+     * - Makes the polymorphic T code available for serialization.
+     * - Provides the specific type T for Open API and Fern.
+     */
+    @JsonView({View.Public.class, View.Write.class})
+    @Override
+    public LlmAsJudgeCode getCode() {
+        return super.getCode();
+    }
+
     @Override
     public AutomationRuleEvaluatorType getType() {
         return AutomationRuleEvaluatorType.LLM_AS_JUDGE;
     }
-
 }

apps/opik-backend/src/main/java/com/comet/opik/api/AutomationRuleEvaluatorUpdate.java

@@ -1,5 +1,6 @@
 package com.comet.opik.api;
 
+import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonSubTypes;
 import com.fasterxml.jackson.annotation.JsonTypeInfo;
@@ -36,6 +37,7 @@ public abstract sealed class AutomationRuleEvaluatorUpdate<T> implements Automat
 
     private final float samplingRate;
 
+    @JsonIgnore
     @NotNull private final T code;
 
     // TODO: add @NotNull after deprecated endpoint is removed

apps/opik-backend/src/main/java/com/comet/opik/api/AutomationRuleEvaluatorUpdateLlmAsJudge.java

@@ -1,6 +1,7 @@
 package com.comet.opik.api;
 
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonView;
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
 import jakarta.validation.constraints.NotBlank;
@@ -28,6 +29,17 @@ public AutomationRuleEvaluatorUpdateLlmAsJudge(
         super(name, samplingRate, code, projectId);
     }
 
+    /**
+     * Two purposes:
+     * - Makes the polymorphic T code available for serialization.
+     * - Provides the specific type T for Open API and Fern.
+     */
+    @JsonView
+    @Override
+    public LlmAsJudgeCode getCode() {
+        return super.getCode();
+    }
+
     @Override
     public AutomationRuleEvaluatorType getType() {
         return AutomationRuleEvaluatorType.LLM_AS_JUDGE;

apps/opik-backend/src/main/java/com/comet/opik/api/AutomationRuleEvaluatorUpdateUserDefinedMetricPython.java

@@ -1,6 +1,7 @@
 package com.comet.opik.api;
 
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonView;
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
 import jakarta.validation.constraints.NotBlank;
@@ -30,6 +31,17 @@ public AutomationRuleEvaluatorUpdateUserDefinedMetricPython(
         super(name, samplingRate, code, projectId);
     }
 
+    /**
+     * Two purposes:
+     * - Makes the polymorphic T code available for serialization.
+     * - Provides the specific type T for Open API and Fern.
+     */
+    @JsonView
+    @Override
+    public UserDefinedMetricPythonCode getCode() {
+        return super.getCode();
+    }
+
     @Override
     public AutomationRuleEvaluatorType getType() {
         return AutomationRuleEvaluatorType.USER_DEFINED_METRIC_PYTHON;

apps/opik-backend/src/main/java/com/comet/opik/api/AutomationRuleEvaluatorUserDefinedMetricPython.java

@@ -63,6 +63,17 @@ public AutomationRuleEvaluatorUserDefinedMetricPython(
         super(id, projectId, projectName, name, samplingRate, code, createdAt, createdBy, lastUpdatedAt, lastUpdatedBy);
     }
 
+    /**
+     * Two purposes:
+     * - Makes the polymorphic T code available for serialization.
+     * - Provides the specific type T for Open API and Fern.
+     */
+    @JsonView({View.Public.class, View.Write.class})
+    @Override
+    public UserDefinedMetricPythonCode getCode() {
+        return super.getCode();
+    }
+
     @Override
     public AutomationRuleEvaluatorType getType() {
         return AutomationRuleEvaluatorType.USER_DEFINED_METRIC_PYTHON;