refactor: centralize default logger selection in internal/Loggers

Author: mattrmc1

lib/sdk/server-ai/src/main/java/com/launchdarkly/sdk/server/ai/AIGraphTracker.java

@@ -1,14 +1,12 @@
 package com.launchdarkly.sdk.server.ai;
 
-import com.launchdarkly.logging.LDLogAdapter;
 import com.launchdarkly.logging.LDLogger;
-import com.launchdarkly.logging.LDSLF4J;
-import com.launchdarkly.logging.Logs;
 import com.launchdarkly.sdk.ArrayBuilder;
 import com.launchdarkly.sdk.LDContext;
 import com.launchdarkly.sdk.LDValue;
 import com.launchdarkly.sdk.ObjectBuilder;
 import com.launchdarkly.sdk.server.ai.datamodel.LDAITrackingTypes.TokenUsage;
+import com.launchdarkly.sdk.server.ai.internal.Loggers;
 import com.launchdarkly.sdk.server.ai.internal.ResumptionTokens;
 import com.launchdarkly.sdk.server.interfaces.LDClientInterface;
 
@@ -96,7 +94,7 @@ public final class AIGraphTracker {
    */
   public static AIGraphTracker fromResumptionToken(
       String token, LDClientInterface client, LDContext context) {
-    return fromResumptionToken(token, client, context, defaultLogger());
+    return fromResumptionToken(token, client, context, Loggers.defaultLogger());
   }
 
   /**
@@ -311,14 +309,4 @@ private ObjectBuilder baseData() {
     return b;
   }
 
-  private static LDLogger defaultLogger() {
-    LDLogAdapter adapter;
-    try {
-      Class.forName("org.slf4j.LoggerFactory");
-      adapter = LDSLF4J.adapter();
-    } catch (ClassNotFoundException e) {
-      adapter = Logs.toConsole();
-    }
-    return LDLogger.withAdapter(adapter, "LaunchDarkly.AI");
-  }
 }

lib/sdk/server-ai/src/main/java/com/launchdarkly/sdk/server/ai/LDAIClientImpl.java

@@ -1,9 +1,6 @@
 package com.launchdarkly.sdk.server.ai;
 
-import com.launchdarkly.logging.LDLogAdapter;
 import com.launchdarkly.logging.LDLogger;
-import com.launchdarkly.logging.LDSLF4J;
-import com.launchdarkly.logging.Logs;
 import com.launchdarkly.sdk.ContextKind;
 import com.launchdarkly.sdk.LDContext;
 import com.launchdarkly.sdk.LDValue;
@@ -16,6 +13,7 @@
 import com.launchdarkly.sdk.server.ai.internal.AISdkInfo;
 import com.launchdarkly.sdk.server.ai.internal.Interpolator;
 import com.launchdarkly.sdk.server.ai.internal.LDAIConfigTrackerImpl;
+import com.launchdarkly.sdk.server.ai.internal.Loggers;
 import com.launchdarkly.sdk.server.interfaces.LDClientInterface;
 
 import java.util.ArrayList;
@@ -71,7 +69,7 @@ public final class LDAIClientImpl implements LDAIClient {
    * @param client an initialized server-side {@code LDClient}; must not be {@code null}
    */
   public LDAIClientImpl(LDClientInterface client) {
-    this(client, defaultLogger());
+    this(client, Loggers.defaultLogger());
   }
 
   /**
@@ -472,14 +470,4 @@ private String interpolate(String template, Map<String, Object> variables, LDCon
     return interpolator.interpolate(template, variables, context);
   }
 
-  private static LDLogger defaultLogger() {
-    LDLogAdapter adapter;
-    try {
-      Class.forName("org.slf4j.LoggerFactory");
-      adapter = LDSLF4J.adapter();
-    } catch (ClassNotFoundException e) {
-      adapter = Logs.toConsole();
-    }
-    return LDLogger.withAdapter(adapter, "LaunchDarkly.AI");
-  }
 }

lib/sdk/server-ai/src/main/java/com/launchdarkly/sdk/server/ai/internal/Loggers.java

@@ -0,0 +1,38 @@
+package com.launchdarkly.sdk.server.ai.internal;
+
+import com.launchdarkly.logging.LDLogAdapter;
+import com.launchdarkly.logging.LDLogger;
+import com.launchdarkly.logging.LDSLF4J;
+import com.launchdarkly.logging.Logs;
+
+/**
+ * Shared logging utilities for the AI SDK.
+ * <p>
+ * Centralizes the SLF4J-with-console-fallback adapter selection so no individual class needs to
+ * replicate the {@code Class.forName} probe.
+ */
+public final class Loggers {
+  /** The logger name used throughout the AI SDK. */
+  public static final String BASE_LOGGER_NAME = "LaunchDarkly.AI";
+
+  private Loggers() {}
+
+  /**
+   * Returns the default {@link LDLogger} for the AI SDK.
+   * <p>
+   * Uses SLF4J if {@code org.slf4j.LoggerFactory} is on the classpath; otherwise falls back to
+   * console output.
+   *
+   * @return a logger named {@value #BASE_LOGGER_NAME}
+   */
+  public static LDLogger defaultLogger() {
+    LDLogAdapter adapter;
+    try {
+      Class.forName("org.slf4j.LoggerFactory");
+      adapter = LDSLF4J.adapter();
+    } catch (ClassNotFoundException e) {
+      adapter = Logs.toConsole();
+    }
+    return LDLogger.withAdapter(adapter, BASE_LOGGER_NAME);
+  }
+}