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Polish SpringPlugin

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This commit is contained in:
Sebastien Deleuze
2014-08-27 16:52:11 +02:00
parent 58631b3a06
commit 9cc6639566
1 changed files with 25 additions and 26 deletions
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51
springloaded/src/main/java/org/springsource/loaded/agent/SpringPlugin.java
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@@ -53,20 +53,18 @@ public class SpringPlugin implements LoadtimeInstrumentationPlugin, ReloadEventP
private static boolean debug = true;
// TODO [gc] what about GC here - how do we know when they are finished with?
public static List<Object> instancesOf_AnnotationMethodHandlerAdapter = new ArrayList<Object>();
public static List<Object> instancesOf_DefaultAnnotationHandlerMapping = new ArrayList<Object>();
public static List<Object> instancesOf_RequestMappingHandlerMapping = new ArrayList<Object>();
public static List<Object> instancesOf_LocalVariableTableParameterNameDiscoverer = null;
ClassLoader springLoader = null;
public static List<Object> annotationMethodHandlerAdapterInstances = new ArrayList<Object>();
public static List<Object> defaultAnnotationHandlerMappingInstances = new ArrayList<Object>();
public static List<Object> requestMappingHandlerMappingInstances = new ArrayList<Object>();
public static List<Object> localVariableTableParameterNameDiscovererInstances = null;
public static boolean support305 = true;
private Field classCacheField;
private Field strongClassCacheField;
private Field softClassCacheField;
private Field declaredMethodsCacheField;
private Field field_parameterNamesCache; // From LocalVariableTableParameterNameDiscoverer
private Field classCacheField; // From CachedIntrospectionResults (Spring <= 4.0.x)
private Field strongClassCacheField; // From CachedIntrospectionResults (Spring >= 4.1.0)
private Field softClassCacheField; // From CachedIntrospectionResults (Spring >= 4.1.0)
private Field declaredMethodsCacheField; // From ReflectionUtils
private Field parameterNamesCacheField; // From LocalVariableTableParameterNameDiscoverer
private boolean cachedIntrospectionResultsClassLoaded = false;
private boolean reflectionUtilsClassLoaded = false;
@@ -122,18 +120,18 @@ public class SpringPlugin implements LoadtimeInstrumentationPlugin, ReloadEventP
// called by the modified code
public static void recordAnnotationMethodHandlerAdapterInstance(Object obj) {
instancesOf_AnnotationMethodHandlerAdapter.add(obj);
annotationMethodHandlerAdapterInstances.add(obj);
}
public static void recordRequestMappingHandlerMappingInstance(Object obj) {
instancesOf_RequestMappingHandlerMapping.add(obj);
requestMappingHandlerMappingInstances.add(obj);
}
public static void recordLocalVariableTableParameterNameDiscoverer(Object obj) {
if (instancesOf_LocalVariableTableParameterNameDiscoverer == null) {
instancesOf_LocalVariableTableParameterNameDiscoverer = new ArrayList<Object>();
if (localVariableTableParameterNameDiscovererInstances == null) {
localVariableTableParameterNameDiscovererInstances = new ArrayList<Object>();
}
instancesOf_LocalVariableTableParameterNameDiscoverer.add(obj);
localVariableTableParameterNameDiscovererInstances.add(obj);
}
static {
@@ -150,7 +148,7 @@ public class SpringPlugin implements LoadtimeInstrumentationPlugin, ReloadEventP
if (debug) {
System.out.println("Recording new instance of DefaultAnnotationHandlerMappingInstance");
}
instancesOf_DefaultAnnotationHandlerMapping.add(obj);
defaultAnnotationHandlerMappingInstances.add(obj);
}
public void reloadEvent(String typename, Class<?> clazz, String versionsuffix) {
@@ -168,23 +166,24 @@ public class SpringPlugin implements LoadtimeInstrumentationPlugin, ReloadEventP
* @param clazz the class being reloaded, which may exist in a parameter name discoverer cache
*/
private void clearLocalVariableTableParameterNameDiscovererCache(Class<?> clazz) {
if (instancesOf_LocalVariableTableParameterNameDiscoverer == null) {
if (localVariableTableParameterNameDiscovererInstances == null) {
return;
}
if (debug) {
System.out.println("ParameterNamesCache: Clearing parameter name discoverer caches");
}
if (field_parameterNamesCache == null) {
if (parameterNamesCacheField == null) {
try {
field_parameterNamesCache = instancesOf_LocalVariableTableParameterNameDiscoverer.get(0).getClass().getDeclaredField("parameterNamesCache");
parameterNamesCacheField = localVariableTableParameterNameDiscovererInstances
.get(0).getClass().getDeclaredField("parameterNamesCache");
} catch (NoSuchFieldException nsfe) {
log.log(Level.SEVERE, "Unexpectedly cannot find parameterNamesCache field on LocalVariableTableParameterNameDiscoverer class");
}
}
for (Object instance: instancesOf_LocalVariableTableParameterNameDiscoverer) {
field_parameterNamesCache.setAccessible(true);
for (Object instance: localVariableTableParameterNameDiscovererInstances) {
parameterNamesCacheField.setAccessible(true);
try {
Map<?,?> parameterNamesCache = (Map<?,?>) field_parameterNamesCache.get(instance);
Map<?,?> parameterNamesCache = (Map<?,?>) parameterNamesCacheField.get(instance);
Object o = parameterNamesCache.remove(clazz);
if (debug) {
System.out.println("ParameterNamesCache: Removed "+clazz.getName()+" from cache?"+(o!=null));
@@ -196,7 +195,7 @@ public class SpringPlugin implements LoadtimeInstrumentationPlugin, ReloadEventP
}
private void removeClazzFromMethodResolverCache(Class<?> clazz) {
for (Object o : instancesOf_AnnotationMethodHandlerAdapter) {
for (Object o : annotationMethodHandlerAdapterInstances) {
try {
Field f = o.getClass().getDeclaredField("methodResolverCache");
f.setAccessible(true);
@@ -305,7 +304,7 @@ public class SpringPlugin implements LoadtimeInstrumentationPlugin, ReloadEventP
private void reinvokeDetectHandlers() {
// want to call detectHandlers on the DefaultAnnotationHandlerMapping type
// protected void detectHandlers() throws BeansException { is defined on AbstractDetectingUrlHandlerMapping
for (Object o : instancesOf_DefaultAnnotationHandlerMapping) {
for (Object o : defaultAnnotationHandlerMappingInstances) {
if (debug) {
System.out.println("Invoking detectHandlers on instance of DefaultAnnotationHandlerMappingInstance");
}
@@ -327,7 +326,7 @@ public class SpringPlugin implements LoadtimeInstrumentationPlugin, ReloadEventP
private void reinvokeInitHandlerMethods() {
// org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping (super AbstractHandlerMethodMapping) - call protected void initHandlerMethods() on it.
for (Object o : instancesOf_RequestMappingHandlerMapping) {
for (Object o : requestMappingHandlerMappingInstances) {
if (debug) {
System.out.println("Invoking initHandlerMethods on instance of RequestMappingHandlerMapping");
}