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SmallRyeFaultToleranceProcessor.java
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SmallRyeFaultToleranceProcessor.java
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package io.quarkus.smallrye.faulttolerance.deployment;
import java.time.temporal.ChronoUnit;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.OptionalInt;
import java.util.Queue;
import java.util.Set;
import javax.annotation.Priority;
import javax.enterprise.inject.spi.DefinitionException;
import org.eclipse.microprofile.config.Config;
import org.eclipse.microprofile.config.ConfigProvider;
import org.eclipse.microprofile.faulttolerance.FallbackHandler;
import org.jboss.jandex.AnnotationInstance;
import org.jboss.jandex.AnnotationTarget;
import org.jboss.jandex.AnnotationTarget.Kind;
import org.jboss.jandex.AnnotationValue;
import org.jboss.jandex.ClassInfo;
import org.jboss.jandex.DotName;
import org.jboss.jandex.IndexView;
import org.jboss.jandex.MethodInfo;
import io.quarkus.arc.deployment.AdditionalBeanBuildItem;
import io.quarkus.arc.deployment.AnnotationsTransformerBuildItem;
import io.quarkus.arc.deployment.BeanArchiveIndexBuildItem;
import io.quarkus.arc.deployment.BeanDefiningAnnotationBuildItem;
import io.quarkus.arc.deployment.ValidationPhaseBuildItem;
import io.quarkus.arc.processor.AnnotationStore;
import io.quarkus.arc.processor.AnnotationsTransformer;
import io.quarkus.arc.processor.BeanInfo;
import io.quarkus.arc.processor.BuildExtension;
import io.quarkus.arc.processor.BuiltinScope;
import io.quarkus.deployment.Feature;
import io.quarkus.deployment.GeneratedClassGizmoAdaptor;
import io.quarkus.deployment.annotations.BuildProducer;
import io.quarkus.deployment.annotations.BuildStep;
import io.quarkus.deployment.annotations.ExecutionTime;
import io.quarkus.deployment.annotations.Record;
import io.quarkus.deployment.builditem.AnnotationProxyBuildItem;
import io.quarkus.deployment.builditem.CombinedIndexBuildItem;
import io.quarkus.deployment.builditem.ConfigurationTypeBuildItem;
import io.quarkus.deployment.builditem.FeatureBuildItem;
import io.quarkus.deployment.builditem.GeneratedClassBuildItem;
import io.quarkus.deployment.builditem.RunTimeConfigurationDefaultBuildItem;
import io.quarkus.deployment.builditem.SystemPropertyBuildItem;
import io.quarkus.deployment.builditem.nativeimage.ReflectiveClassBuildItem;
import io.quarkus.deployment.builditem.nativeimage.ReflectiveMethodBuildItem;
import io.quarkus.deployment.builditem.nativeimage.ServiceProviderBuildItem;
import io.quarkus.deployment.metrics.MetricsCapabilityBuildItem;
import io.quarkus.deployment.recording.RecorderContext;
import io.quarkus.gizmo.ClassOutput;
import io.quarkus.runtime.metrics.MetricsFactory;
import io.quarkus.smallrye.faulttolerance.runtime.QuarkusAsyncExecutorProvider;
import io.quarkus.smallrye.faulttolerance.runtime.QuarkusExistingCircuitBreakerNames;
import io.quarkus.smallrye.faulttolerance.runtime.QuarkusFallbackHandlerProvider;
import io.quarkus.smallrye.faulttolerance.runtime.QuarkusFaultToleranceOperationProvider;
import io.quarkus.smallrye.faulttolerance.runtime.SmallRyeFaultToleranceRecorder;
import io.smallrye.faulttolerance.CdiFaultToleranceSpi;
import io.smallrye.faulttolerance.CircuitBreakerMaintenanceImpl;
import io.smallrye.faulttolerance.ExecutorHolder;
import io.smallrye.faulttolerance.FaultToleranceBinding;
import io.smallrye.faulttolerance.FaultToleranceInterceptor;
import io.smallrye.faulttolerance.RequestContextIntegration;
import io.smallrye.faulttolerance.SpecCompatibility;
import io.smallrye.faulttolerance.autoconfig.FaultToleranceMethod;
import io.smallrye.faulttolerance.core.util.RunnableWrapper;
import io.smallrye.faulttolerance.internal.RequestContextControllerProvider;
import io.smallrye.faulttolerance.internal.StrategyCache;
import io.smallrye.faulttolerance.propagation.ContextPropagationRequestContextControllerProvider;
import io.smallrye.faulttolerance.propagation.ContextPropagationRunnableWrapper;
public class SmallRyeFaultToleranceProcessor {
@BuildStep
public void build(BuildProducer<AnnotationsTransformerBuildItem> annotationsTransformer,
BuildProducer<FeatureBuildItem> feature, BuildProducer<AdditionalBeanBuildItem> beans,
BuildProducer<ServiceProviderBuildItem> serviceProvider,
BuildProducer<BeanDefiningAnnotationBuildItem> additionalBda,
Optional<MetricsCapabilityBuildItem> metricsCapability,
BuildProducer<SystemPropertyBuildItem> systemProperty,
CombinedIndexBuildItem combinedIndexBuildItem,
BuildProducer<ReflectiveClassBuildItem> reflectiveClass,
BuildProducer<ReflectiveMethodBuildItem> reflectiveMethod,
BuildProducer<RunTimeConfigurationDefaultBuildItem> config) {
feature.produce(new FeatureBuildItem(Feature.SMALLRYE_FAULT_TOLERANCE));
serviceProvider.produce(new ServiceProviderBuildItem(RequestContextControllerProvider.class.getName(),
ContextPropagationRequestContextControllerProvider.class.getName()));
serviceProvider.produce(new ServiceProviderBuildItem(RunnableWrapper.class.getName(),
ContextPropagationRunnableWrapper.class.getName()));
IndexView index = combinedIndexBuildItem.getIndex();
// Add reflective access to fallback handlers
Set<String> fallbackHandlers = new HashSet<>();
for (ClassInfo implementor : index
.getAllKnownImplementors(DotName.createSimple(FallbackHandler.class.getName()))) {
fallbackHandlers.add(implementor.name().toString());
}
if (!fallbackHandlers.isEmpty()) {
AdditionalBeanBuildItem.Builder fallbackHandlersBeans = AdditionalBeanBuildItem.builder()
.setDefaultScope(BuiltinScope.DEPENDENT.getName());
for (String fallbackHandler : fallbackHandlers) {
reflectiveClass.produce(new ReflectiveClassBuildItem(true, false, fallbackHandler));
fallbackHandlersBeans.addBeanClass(fallbackHandler);
}
beans.produce(fallbackHandlersBeans.build());
}
// Add reflective access to fallback methods
for (AnnotationInstance annotation : index.getAnnotations(DotNames.FALLBACK)) {
AnnotationValue fallbackMethodValue = annotation.value("fallbackMethod");
if (fallbackMethodValue == null) {
continue;
}
String fallbackMethod = fallbackMethodValue.asString();
Queue<DotName> classesToScan = new ArrayDeque<>(); // work queue
// @Fallback can only be present on methods, so this is just future-proofing
AnnotationTarget target = annotation.target();
if (target.kind() == Kind.METHOD) {
classesToScan.add(target.asMethod().declaringClass().name());
}
while (!classesToScan.isEmpty()) {
DotName name = classesToScan.poll();
ClassInfo clazz = index.getClassByName(name);
if (clazz == null) {
continue;
}
// we could further restrict the set of registered methods based on matching parameter types,
// but that's relatively complex and SmallRye Fault Tolerance has to do it anyway
clazz.methods()
.stream()
.filter(it -> fallbackMethod.equals(it.name()))
.forEach(it -> reflectiveMethod.produce(new ReflectiveMethodBuildItem(it)));
DotName superClass = clazz.superName();
if (superClass != null && !DotNames.OBJECT.equals(superClass)) {
classesToScan.add(superClass);
}
classesToScan.addAll(clazz.interfaceNames());
}
}
// Add reflective access to custom backoff strategies
for (ClassInfo strategy : index.getAllKnownImplementors(DotNames.CUSTOM_BACKOFF_STRATEGY)) {
reflectiveClass.produce(new ReflectiveClassBuildItem(true, false, strategy.name().toString()));
}
for (DotName annotation : DotNames.FT_ANNOTATIONS) {
reflectiveClass.produce(new ReflectiveClassBuildItem(true, false, annotation.toString()));
// also make them bean defining annotations
additionalBda.produce(new BeanDefiningAnnotationBuildItem(annotation));
}
// Add transitive interceptor binding to FT annotations
annotationsTransformer.produce(new AnnotationsTransformerBuildItem(new AnnotationsTransformer() {
@Override
public boolean appliesTo(Kind kind) {
return kind == Kind.CLASS;
}
@Override
public void transform(TransformationContext context) {
if (DotNames.FT_ANNOTATIONS.contains(context.getTarget().asClass().name())) {
context.transform().add(FaultToleranceBinding.class).done();
}
}
}));
// Register bean classes
AdditionalBeanBuildItem.Builder builder = AdditionalBeanBuildItem.builder();
// Also register MP FT annotations so that they are recognized as interceptor bindings
// Note that MP FT API jar is nor indexed, nor contains beans.xml so it is not part of the app index
for (DotName ftAnnotation : DotNames.FT_ANNOTATIONS) {
builder.addBeanClass(ftAnnotation.toString());
}
builder
.addBeanClasses(
ExecutorHolder.class,
StrategyCache.class,
QuarkusFallbackHandlerProvider.class,
QuarkusAsyncExecutorProvider.class,
CircuitBreakerMaintenanceImpl.class,
RequestContextIntegration.class,
SpecCompatibility.class);
if (metricsCapability.isEmpty()) {
builder.addBeanClass("io.smallrye.faulttolerance.metrics.NoopProvider");
} else if (metricsCapability.get().metricsSupported(MetricsFactory.MP_METRICS)) {
builder.addBeanClass("io.smallrye.faulttolerance.metrics.MicroProfileMetricsProvider");
} else if (metricsCapability.get().metricsSupported(MetricsFactory.MICROMETER)) {
builder.addBeanClass("io.smallrye.faulttolerance.metrics.MicrometerProvider");
}
beans.produce(builder.build());
// TODO FT should be smart enough and only initialize the stuff in the recorder if it's really needed
// The FaultToleranceInterceptor needs to be registered as unremovable due to the rest-client integration - interceptors
// are currently resolved dynamically at runtime because per the spec interceptor bindings cannot be declared on interfaces
beans.produce(AdditionalBeanBuildItem.builder().setUnremovable()
.addBeanClasses(FaultToleranceInterceptor.class, QuarkusFaultToleranceOperationProvider.class,
QuarkusExistingCircuitBreakerNames.class, CdiFaultToleranceSpi.EagerDependencies.class,
CdiFaultToleranceSpi.LazyDependencies.class)
.build());
config.produce(new RunTimeConfigurationDefaultBuildItem("smallrye.faulttolerance.mp-compatibility", "false"));
}
@BuildStep
AnnotationsTransformerBuildItem transformInterceptorPriority(BeanArchiveIndexBuildItem index) {
return new AnnotationsTransformerBuildItem(new AnnotationsTransformer() {
@Override
public boolean appliesTo(Kind kind) {
return kind == Kind.CLASS;
}
@Override
public void transform(TransformationContext ctx) {
if (ctx.isClass()) {
if (!ctx.getTarget().asClass().name().toString()
.equals("io.smallrye.faulttolerance.FaultToleranceInterceptor")) {
return;
}
final Config config = ConfigProvider.getConfig();
OptionalInt priority = config.getValue("mp.fault.tolerance.interceptor.priority", OptionalInt.class);
if (priority.isPresent()) {
ctx.transform()
.remove(ann -> ann.name().toString().equals(Priority.class.getName()))
.add(Priority.class, AnnotationValue.createIntegerValue("value", priority.getAsInt()))
.done();
}
}
}
});
}
@BuildStep
// needs to be RUNTIME_INIT because we need to read MP Config
@Record(ExecutionTime.RUNTIME_INIT)
void validateFaultToleranceAnnotations(SmallRyeFaultToleranceRecorder recorder,
RecorderContext recorderContext,
ValidationPhaseBuildItem validationPhase,
BeanArchiveIndexBuildItem beanArchiveIndexBuildItem,
AnnotationProxyBuildItem annotationProxy,
BuildProducer<GeneratedClassBuildItem> generatedClasses,
BuildProducer<ReflectiveClassBuildItem> reflectiveClass,
BuildProducer<ValidationPhaseBuildItem.ValidationErrorBuildItem> errors) {
Config config = ConfigProvider.getConfig();
Set<String> exceptionConfigs = Set.of("CircuitBreaker/failOn", "CircuitBreaker/skipOn",
"Fallback/applyOn", "Fallback/skipOn", "Retry/retryOn", "Retry/abortOn");
for (String exceptionConfig : exceptionConfigs) {
Optional<String[]> exceptionNames = config.getOptionalValue(exceptionConfig, String[].class);
if (exceptionNames.isPresent()) {
reflectiveClass.produce(new ReflectiveClassBuildItem(false, false, exceptionNames.get()));
}
}
AnnotationStore annotationStore = validationPhase.getContext().get(BuildExtension.Key.ANNOTATION_STORE);
IndexView index = beanArchiveIndexBuildItem.getIndex();
// only generating annotation literal classes for MicroProfile/SmallRye Fault Tolerance annotations,
// none of them are application classes
ClassOutput classOutput = new GeneratedClassGizmoAdaptor(generatedClasses, false);
FaultToleranceScanner scaner = new FaultToleranceScanner(index, annotationStore, annotationProxy, classOutput,
recorderContext);
List<FaultToleranceMethod> ftMethods = new ArrayList<>();
List<Throwable> exceptions = new ArrayList<>();
for (BeanInfo info : validationPhase.getContext().beans()) {
ClassInfo beanClass = info.getImplClazz();
if (beanClass == null) {
continue;
}
for (String exceptionConfig : exceptionConfigs) {
Optional<String[]> exceptionNames = config.getOptionalValue(beanClass.name().toString()
+ "/" + exceptionConfig, String[].class);
if (exceptionNames.isPresent()) {
reflectiveClass.produce(new ReflectiveClassBuildItem(false, false, exceptionNames.get()));
}
}
if (scaner.hasFTAnnotations(beanClass)) {
scaner.forEachMethod(beanClass, method -> {
FaultToleranceMethod ftMethod = scaner.createFaultToleranceMethod(beanClass, method);
if (ftMethod.isLegitimate()) {
ftMethods.add(ftMethod);
if (method.hasAnnotation(DotNames.BLOCKING) && method.hasAnnotation(DotNames.NON_BLOCKING)) {
exceptions.add(
new DefinitionException("Both @Blocking and @NonBlocking present on '" + method + "'"));
}
for (String exceptionConfig : exceptionConfigs) {
Optional<String[]> exceptionNames = config.getOptionalValue(beanClass.name().toString()
+ "/" + method.name() + "/" + exceptionConfig, String[].class);
if (exceptionNames.isPresent()) {
reflectiveClass.produce(new ReflectiveClassBuildItem(false, false, exceptionNames.get()));
}
}
}
});
if (beanClass.classAnnotation(DotNames.BLOCKING) != null
&& beanClass.classAnnotation(DotNames.NON_BLOCKING) != null) {
exceptions.add(new DefinitionException("Both @Blocking and @NonBlocking present on '" + beanClass + "'"));
}
}
}
recorder.createFaultToleranceOperation(ftMethods);
Map<String, Set<String>> existingCircuitBreakerNames = new HashMap<>();
for (AnnotationInstance it : index.getAnnotations(DotNames.CIRCUIT_BREAKER_NAME)) {
if (it.target().kind() == Kind.METHOD) {
MethodInfo method = it.target().asMethod();
existingCircuitBreakerNames.computeIfAbsent(it.value().asString(), ignored -> new HashSet<>())
.add(method + " @ " + method.declaringClass());
}
}
for (Map.Entry<String, Set<String>> entry : existingCircuitBreakerNames.entrySet()) {
if (entry.getValue().size() > 1) {
exceptions.add(new DefinitionException("Multiple circuit breakers have the same name '"
+ entry.getKey() + "': " + entry.getValue()));
}
}
for (DotName backoffAnnotation : DotNames.BACKOFF_ANNOTATIONS) {
for (AnnotationInstance it : index.getAnnotations(backoffAnnotation)) {
if (it.target().kind() == Kind.CLASS && it.target().asClass().classAnnotation(DotNames.RETRY) == null) {
exceptions.add(new DefinitionException("Backoff annotation @" + backoffAnnotation.withoutPackagePrefix()
+ " present on '" + it.target() + "', but @Retry is missing"));
} else if (it.target().kind() == Kind.METHOD && !it.target().asMethod().hasAnnotation(DotNames.RETRY)) {
exceptions.add(new DefinitionException("Backoff annotation @" + backoffAnnotation.withoutPackagePrefix()
+ " present on '" + it.target() + "', but @Retry is missing"));
}
}
}
if (!exceptions.isEmpty()) {
errors.produce(new ValidationPhaseBuildItem.ValidationErrorBuildItem(exceptions));
}
recorder.initExistingCircuitBreakerNames(existingCircuitBreakerNames.keySet());
}
@BuildStep
public ConfigurationTypeBuildItem registerTypes() {
return new ConfigurationTypeBuildItem(ChronoUnit.class);
}
}