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package com.appland.appmap.process.hooks;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
import org.tinylog.TaggedLogger;
import com.appland.appmap.config.AppMapConfig;
import com.appland.appmap.output.v1.Event;
import com.appland.appmap.transform.annotations.HookClass;
import com.appland.appmap.transform.annotations.MethodEvent;
public class Proxy {
static final TaggedLogger logger = AppMapConfig.getLogger(null);
private static final Map allProxyHooks = new HashMap<>();
@HookClass("java.lang.reflect.InvocationHandler")
public static void invoke(Event event, Object receiver,
Object proxy, Method method, Object[] methodArgs) {
logger.trace("receiver: {}, proxy: {}, method: {}, method args: {}", receiver::toString,
proxy::toString,
() -> String.format("%s@%x", method, method.hashCode()),
() -> methodArgs != null ? methodArgs.toString() : "null");
ProxyHooks proxyHooks = allProxyHooks.get(method);
if (proxyHooks == null) {
proxyHooks = ProxyHooks.build(method, methodArgs);
}
if (proxyHooks == null) {
// Still null => method not hooked
return;
}
allProxyHooks.put(method, proxyHooks);
proxyHooks.invokeCall(proxy, method, methodArgs);
}
@HookClass(value = "java.lang.reflect.InvocationHandler", method = "invoke",
methodEvent = MethodEvent.METHOD_RETURN)
public static void invokeReturn(Event event, Object receiver, Object ret,
Object proxy, Method method, Object[] methodArgs) {
logger.trace("receiver: {}, proxy: {}, method: {}, method args: {}", receiver::toString,
proxy::toString,
() -> String.format("%s@%x", method, method.hashCode()),
() -> methodArgs != null ? methodArgs.toString() : "null");
ProxyHooks proxyHooks = allProxyHooks.get(method);
if (proxyHooks != null) {
proxyHooks.invokeReturn(proxy, ret, methodArgs);
}
}
@HookClass(value = "java.lang.reflect.InvocationHandler", method = "invoke",
methodEvent = MethodEvent.METHOD_EXCEPTION)
public static void invokeExc(Event event, Object receiver, Throwable exc,
Object proxy, Method method, Object[] methodArgs) {
logger.trace("receiver: {}, proxy: {}, method: {}, method args: {}", receiver::toString,
proxy::toString,
() -> String.format("%s@%x", method, method.hashCode()),
() -> methodArgs != null ? methodArgs.toString() : "null");
ProxyHooks proxyHooks = allProxyHooks.get(method);
if (proxyHooks != null) {
proxyHooks.invokeExc(proxy, exc, methodArgs);
}
}
}