eric-maynard commented on code in PR #1000:
URL: https://github.com/apache/polaris/pull/1000#discussion_r1965978795


##########
polaris-core/src/main/java/org/apache/polaris/core/context/CallContext.java:
##########
@@ -0,0 +1,158 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.polaris.core.context;
+
+import jakarta.annotation.Nonnull;
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.stream.Collectors;
+import org.apache.iceberg.io.CloseableGroup;
+import org.apache.polaris.core.PolarisCallContext;
+import org.apache.polaris.core.PolarisDiagnostics;
+import org.apache.polaris.core.auth.AuthenticatedPolarisPrincipal;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Stores elements associated with an individual REST request such as 
RealmContext, caller
+ * identity/role, authn/authz, etc. This class is distinct from RealmContext 
because implementations
+ * may need to first independently resolve a RealmContext before resolving the 
identity/role
+ * elements of the CallContext that reside exclusively within the resolved 
Realm. For example, the
+ * principal/role entities may be defined within a Realm-specific persistence 
layer, and the
+ * underlying nature of the persistence layer may differ between different 
realms.
+ */
+public interface CallContext extends AutoCloseable {
+  InheritableThreadLocal<CallContext> CURRENT_CONTEXT = new 
InheritableThreadLocal<>();

Review Comment:
   Yeah after doing this revert and debugging all the test issues with 
ThreadLocal I am very eager to see ThreadLocal gone and injection used 
consistently.



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