Examples with ClassWeavedListener com.newrelic.weave.weavepackage.ClassWeavedListener used on opensource projects

Example 1 with ClassWeavedListener

use of com.newrelic.weave.weavepackage.ClassWeavedListener in project newrelic-java-agent by newrelic.

the class InstrumentingClassLoader method transform.

@Override
protected byte[] transform(String className) throws Exception {
    byte[] classBytes = WeaveUtils.getClassBytesFromClassLoaderResource(className, this);
    if (classBytes == null) {
        return null;
    }
    final InstrumentationContext context = new InstrumentationContext(classBytes, null, null);
    new ClassReader(classBytes).accept(new ScalaTraitMatcher().newClassMatchVisitor(null, null, null, null, context), ClassReader.SKIP_FRAMES);
    // weave
    byte[] weaved = weave(className, classBytes, context.getSkipMethods(), new ClassWeavedListener() {

        @Override
        public void classWeaved(PackageWeaveResult weaveResult, ClassLoader classloader, ClassCache cache) {
            if (weaveResult.weavedClass()) {
                final String packageName = weaveResult.getValidationResult().getWeavePackage().getName();
                for (String originalName : weaveResult.getWeavedMethods().keySet()) {
                    for (Method method : weaveResult.getWeavedMethods().get(originalName)) {
                        context.addWeavedMethod(method, packageName);
                    }
                    ClassWeaverService.addTraceInformation(InstrumentingClassLoader.this.tracedWeaveInstrumentationDetails, packageName, context, weaveResult.getComposite(), originalName);
                }
                try {
                    Map<String, byte[]> annotationProxyClasses = weaveResult.getAnnotationProxyClasses();
                    if (!annotationProxyClasses.isEmpty()) {
                        // Special case for annotation weaving in order to support dynamic annotation proxies. We
                        // need to add the dynamic proxy classes that we created to the current classloader here
                        NewClassAppender.appendClasses(classloader, annotationProxyClasses);
                    }
                } catch (Exception e) {
                    Agent.LOG.log(Level.FINE, e, "Unable to add annotation proxy classes");
                }
            }
        }
    });
    // trace
    if (weaved != null) {
        classBytes = weaved;
    }
    ClassReader reader = new ClassReader(classBytes);
    if (weaved == null) {
        // process trace annotations for non-weaved code
        reader.accept(new SimpleTraceMatchVisitor(null, context), ClassReader.EXPAND_FRAMES);
    }
    if (!context.isTracerMatch()) {
        if (weaved != null) {
            // printClass(className, weaved);
            return weaved;
        }
        return null;
    }
    NoticeSqlVisitor noticeSqlVisitor = new NoticeSqlVisitor(WeaveUtils.ASM_API_LEVEL);
    // find the noticeSql calls
    reader.accept(noticeSqlVisitor, ClassReader.SKIP_FRAMES);
    String internalClassName = className.replace('.', '/');
    ClassWriter writer = new PatchedClassWriter(ClassWriter.COMPUTE_FRAMES, context.getClassResolver(this));
    ClassVisitor cv = writer;
    cv = new TraceClassVisitor(cv, internalClassName, context, noticeSqlVisitor.getNoticeSqlMethods());
    cv = new ClassVisitor(WeaveUtils.ASM_API_LEVEL, cv) {

        @Override
        public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
            if (version < 49 || version > 100) {
                // Some weird Apache classes have really large versions.
                version = WeaveUtils.RUNTIME_MAX_SUPPORTED_CLASS_VERSION;
            }
            super.visit(version, access, name, signature, superName, interfaces);
        }
    };
    reader.accept(cv, ClassReader.EXPAND_FRAMES);
    byte[] result = writer.toByteArray();
    return result;
}

Example 2 with ClassWeavedListener

use of com.newrelic.weave.weavepackage.ClassWeavedListener in project newrelic-java-agent by newrelic.

the class ClassWeaverService method transform.

@Override
public byte[] transform(ClassLoader loader, String className, Class<?> classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer, final InstrumentationContext context, Match match) throws IllegalClassFormatException {
    if (!PointCutClassTransformer.isValidClassName(className)) {
        return null;
    }
    ClassWeavedListener classWeavedCallback = new ClassWeavedListener() {

        @Override
        public void classWeaved(PackageWeaveResult weaveResult, ClassLoader classloader, ClassCache cache) {
            List<WeaveViolation> violations = weaveResult.getValidationResult().getViolations();
            if (!violations.isEmpty()) {
                // This is due to the nature of annotation weaving happening at weave time instead of validation time
                weaveViolationLogger.logWeaveViolations(weaveResult.getValidationResult(), classloader, false);
                return;
            }
            final String packageName = weaveResult.getValidationResult().getWeavePackage().getName();
            if (Agent.LOG.isFinerEnabled()) {
                try {
                    if (Agent.LOG.isFinerEnabled()) {
                        ClassInformation weavedClass = cache.getClassInformation(weaveResult.getClassName());
                        Agent.LOG.log(Level.FINER, "{0} matched {1}", packageName, weavedClass.className);
                        for (String superName : weavedClass.getAllSuperNames(cache)) {
                            Agent.LOG.log(Level.FINER, "\ts: {0}", superName);
                        }
                        for (String interfaceName : weavedClass.getAllInterfaces(cache)) {
                            Agent.LOG.log(Level.FINER, "\ti: {0}", interfaceName);
                        }
                    }
                } catch (IOException ioe) {
                    Agent.LOG.log(Level.FINEST, ioe, "exception while getting supertype info");
                }
            }
            if (weaveResult.weavedClass()) {
                try {
                    Map<String, byte[]> annotationProxyClasses = weaveResult.getAnnotationProxyClasses();
                    if (!annotationProxyClasses.isEmpty()) {
                        // the dynamic proxy classes that we created to the current classloader at this point
                        if (BootstrapLoader.PLACEHOLDER == classloader) {
                            NewClassAppender.appendClassesToBootstrapClassLoader(instrumentation, annotationProxyClasses);
                        } else {
                            NewClassAppender.appendClasses(classloader, annotationProxyClasses);
                        }
                    }
                } catch (Exception e) {
                    Agent.LOG.log(Level.FINE, e, "Unable to add annotation proxy classes");
                }
                String weaveClassStat = MessageFormat.format(MetricNames.SUPPORTABILITY_WEAVE_CLASS, packageName, weaveResult.getClassName());
                ServiceFactory.getStatsService().doStatsWork(StatsWorks.getRecordMetricWork(weaveClassStat, 1), weaveClassStat);
                for (String originalName : weaveResult.getWeavedMethods().keySet()) {
                    Agent.LOG.log(Level.FINE, "{0}: weaved target {1}-{2}", packageName, classloader, weaveResult.getClassName());
                    for (Method method : weaveResult.getWeavedMethods().get(originalName)) {
                        Agent.LOG.log(Level.FINE, "\t{0}.{1}:{2}", originalName, method.getName(), method.getDescriptor());
                        context.addWeavedMethod(method, packageName);
                    }
                    addTraceInformation(ClassWeaverService.this.tracedWeaveInstrumentationDetails, packageName, context, weaveResult.getComposite(), originalName);
                }
            } else {
                Agent.LOG.log(Level.FINER, "{0} matched class {1} but no methods were weaved.", packageName, weaveResult.getClassName());
            }
        }
    };
    try {
        return weavePackageManager.weave(loader, getClassCache(loader), className, classfileBuffer, context.getSkipMethods(), classWeavedCallback);
    } catch (IOException ioe) {
        throw new RuntimeException(ioe);
    }
}