Adding thread context package

Author: RanVaknin

bom/pom.xml

@@ -252,6 +252,11 @@
                 <artifactId>endpoints-spi</artifactId>
                 <version>${awsjavasdk.version}</version>
             </dependency>
+            <dependency>
+                <groupId>software.amazon.awssdk</groupId>
+                <artifactId>thread-context</artifactId>
+                <version>${awsjavasdk.version}</version>
+            </dependency>
             <!-- Services -->
             <dependency>
                 <groupId>software.amazon.awssdk</groupId>

pom.xml

@@ -95,6 +95,7 @@
         <module>test/crt-unavailable-tests</module>
         <module>test/architecture-tests</module>
         <module>test/s3-tests</module>
+        <module>thread-context</module>
     </modules>
     <scm>
         <url>${scm.github.url}</url>

thread-context/pom.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License").
+  ~ You may not use this file except in compliance with the License.
+  ~ A copy of the License is located at
+  ~
+  ~  http://aws.amazon.com/apache2.0
+  ~
+  ~ or in the "license" file accompanying this file. This file 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.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>software.amazon.awssdk</groupId>
+        <artifactId>aws-sdk-java-pom</artifactId>
+        <version>2.33.2-SNAPSHOT</version>
+    </parent>
+    <artifactId>thread-context</artifactId>
+    <name>AWS Java SDK :: Thread Context</name>
+    <description>
+        Provides thread-local context storage utilities for sharing data across components.
+    </description>
+    <url>https://aws.amazon.com/sdkforjava</url>
+
+</project>

thread-context/src/main/java/software/amazon/awssdk/threadcontext/ThreadStorage.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License").
+ * You may not use this file except in compliance with the License.
+ * A copy of the License is located at
+ *
+ *  http://aws.amazon.com/apache2.0
+ *
+ * or in the "license" file accompanying this file. This file 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 software.amazon.awssdk.threadcontext;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public final class ThreadStorage {
+    private static final ThreadLocal<Map<String, String>> storage = ThreadLocal.withInitial(HashMap::new);
+
+    private ThreadStorage() {}
+
+    public static void put(String key, String value) {
+        storage.get().put(key, value);
+    }
+
+    public static String get(String key) {
+        return storage.get().get(key);
+    }
+
+    public static String remove(String key) {
+        return storage.get().remove(key);
+    }
+
+    public static void clear() {
+        storage.get().clear();
+    }
+
+    public static boolean containsKey(String key) {
+        return storage.get().containsKey(key);
+    }
+}