Support spring-boot-devtoools reloadable classlaoder

dd-java-agent/agent-bootstrap/src/main/java/datadog/trace/bootstrap/instrumentation/classloading/MemoizerResetter.java

@@ -0,0 +1,22 @@
+package datadog.trace.bootstrap.instrumentation.classloading;
+
+@FunctionalInterface
+public interface MemoizerResetter {
+  void reset();
+
+  abstract class Supplier {
+    private static volatile MemoizerResetter SUPPLIER;
+
+    public static void reset() {
+      if (SUPPLIER != null) {
+        SUPPLIER.reset();
+      }
+    }
+
+    public static synchronized void registerIfAbsent(MemoizerResetter supplier) {
+      if (SUPPLIER == null) {
+        SUPPLIER = supplier;
+      }
+    }
+  }
+}

dd-java-agent/agent-builder/src/main/java/datadog/trace/agent/tooling/AgentInstaller.java

@@ -9,6 +9,7 @@
 import datadog.trace.agent.tooling.bytebuddy.iast.TaintableRedefinitionStrategyListener;
 import datadog.trace.agent.tooling.bytebuddy.matcher.DDElementMatchers;
 import datadog.trace.agent.tooling.bytebuddy.memoize.MemoizedMatchers;
+import datadog.trace.agent.tooling.bytebuddy.memoize.Memoizer;
 import datadog.trace.agent.tooling.bytebuddy.outline.TypePoolFacade;
 import datadog.trace.agent.tooling.usm.UsmExtractorImpl;
 import datadog.trace.agent.tooling.usm.UsmMessageFactoryImpl;
@@ -109,6 +110,7 @@ public static ClassFileTransformer installBytebuddyAgent(
 
     if (InstrumenterConfig.get().isResolverMemoizingEnabled()) {
       MemoizedMatchers.registerAsSupplier();
+      Memoizer.registerAsSupplier();
     } else {
       DDElementMatchers.registerAsSupplier();
     }

dd-java-agent/agent-tooling/src/main/java/datadog/trace/agent/tooling/bytebuddy/memoize/Memoizer.java

@@ -10,6 +10,7 @@
 import datadog.trace.api.InstrumenterConfig;
 import datadog.trace.api.cache.DDCache;
 import datadog.trace.api.cache.DDCaches;
+import datadog.trace.bootstrap.instrumentation.classloading.MemoizerResetter;
 import de.thetaphi.forbiddenapis.SuppressForbidden;
 import java.util.ArrayList;
 import java.util.BitSet;
@@ -91,6 +92,10 @@ public static void resetState() {
     }
   }
 
+  public static void registerAsSupplier() {
+    MemoizerResetter.Supplier.registerIfAbsent(Memoizer::resetState);
+  }
+
   public static void clear() {
     memos.clear();
   }

dd-java-agent/agent-tooling/src/main/resources/datadog/trace/agent/tooling/bytebuddy/matcher/ignored_class_name.trie

@@ -272,6 +272,7 @@
 0 org.springframework.boot.context.embedded.EmbeddedWebApplicationContext
 0 org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer$*
 0 org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedWebappClassLoader
+0 org.springframework.boot.devtools.restart.classloader.RestartClassLoader
 0 org.springframework.boot.web.embedded.netty.NettyWebServer$*
 0 org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedWebappClassLoader
 0 org.springframework.boot.web.embedded.tomcat.TomcatWebServer$1

dd-java-agent/instrumentation/spring-boot/build.gradle

@@ -10,12 +10,23 @@ muzzle {
     module = 'spring-boot'
     versions = "[1.3.0.RELEASE,3)"
   }
+  pass {
+    group = 'org.springframework.boot'
+    module = 'spring-boot-devtools'
+    versions = "[1.3.0.RELEASE,3)"
+  }
   pass {
     group = 'org.springframework.boot'
     module = 'spring-boot'
     versions = "[3,)"
     javaVersion = "17"
   }
+  pass {
+    group = 'org.springframework.boot'
+    module = 'spring-boot-devtools'
+    versions = "[3,)"
+    javaVersion = "17"
+  }
 }
 
 apply from: "$rootDir/gradle/java.gradle"
@@ -39,16 +50,24 @@ dependencies {
   implementation project(':dd-java-agent:instrumentation:span-origin')
 
   compileOnly group: 'org.springframework.boot', name: 'spring-boot', version: '1.3.0.RELEASE'
+  compileOnly group: 'org.springframework.boot', name: 'spring-boot-devtools', version: '1.3.0.RELEASE'
   testImplementation group: 'org.springframework.boot', name: 'spring-boot', version: '1.3.0.RELEASE'
+  testImplementation group: 'org.springframework.boot', name: 'spring-boot-devtools', version: '1.3.0.RELEASE'
+  testImplementation project(':dd-java-agent:instrumentation:trace-annotation')
   boot1LatestDepTestImplementation group: 'org.springframework.boot', name: 'spring-boot', version: '1.+'
+  boot1LatestDepTestImplementation group: 'org.springframework.boot', name: 'spring-boot-devtools', version: '1.+'
   boot1LatestDepForkedTestImplementation group: 'org.springframework.boot', name: 'spring-boot', version: '1.+'
   boot2TestImplementation group: 'org.springframework.boot', name: 'spring-boot', version: '2.0.0.RELEASE'
+  boot2TestImplementation group: 'org.springframework.boot', name: 'spring-boot-devtools', version: '2.0.0.RELEASE'
   boot2ForkedTestImplementation group: 'org.springframework.boot', name: 'spring-boot', version: '2.0.0.RELEASE'
-  boot2LatestDepTestImplementation group: 'org.springframework.boot', name: 'spring-boot', version: '1.+'
-  boot2LatestDepForkedTestImplementation group: 'org.springframework.boot', name: 'spring-boot', version: '1.+'
+  boot2LatestDepTestImplementation group: 'org.springframework.boot', name: 'spring-boot', version: '2.+'
+  boot2LatestDepTestImplementation group: 'org.springframework.boot', name: 'spring-boot-devtools', version: '2.+'
+  boot2LatestDepForkedTestImplementation group: 'org.springframework.boot', name: 'spring-boot', version: '2.+'
   boot3TestImplementation group: 'org.springframework.boot', name: 'spring-boot', version: '3.0.0'
+  boot3TestImplementation group: 'org.springframework.boot', name: 'spring-boot-devtools', version: '3.0.0'
   boot3ForkedTestImplementation group: 'org.springframework.boot', name: 'spring-boot', version: '3.0.0'
   latestDepTestImplementation group: 'org.springframework.boot', name: 'spring-boot', version: '+'
+  latestDepTestImplementation group: 'org.springframework.boot', name: 'spring-boot-devtools', version: '+'
   latestDepForkedTestImplementation group: 'org.springframework.boot', name: 'spring-boot', version: '+'
   latestDepTestImplementation group: 'org.springframework.boot', name: 'spring-boot-starter-logging', version: '+'
   latestDepForkedTestImplementation group: 'org.springframework.boot', name: 'spring-boot-starter-logging', version: '+'