Sample project to reproduce this issue available on Github
I'm using quarkus-rest-client to invoke a REST service from my Quarkus application.
ExampleResource offers one endpoint http://localhost:8080/echo that calls https://postman-echo.com/get using a RestClient:
@Path("/echo")
public class ExampleResource {
private final RestClient restClient;
public ExampleResource(RestClient restClient){
this.restClient = restClient;
}
@GET
@Produces(MediaType.TEXT_PLAIN)
public Response get() {
return restClient.get();
}
}
@ApplicationScoped
public class RestClient {
private final Client httpClient;
public RestClient() {
this.httpClient = ResteasyClientBuilder.newBuilder().build();
}
public Response get() {
return httpClient.target("https://postman-echo.com/get").request().get();
}
}
Although it works ok, when I try to generate a native image it fails:
./mvnw package -Pnative -Dquarkus.native.container-build=true
Error: No instances of sun.security.provider.NativePRNG are allowed in the image heap as this class should be initialized at image runtime. To see how this object got instantiated use -H:+TraceClassInitialization.
Detailed message:
Trace: object java.security.SecureRandom
object sun.security.ssl.SSLContextImpl$TLSContext
object sun.security.ssl.SSLSocketFactoryImpl
object org.apache.http.conn.ssl.SSLConnectionSocketFactory
object java.util.concurrent.ConcurrentHashMap$Node
object java.util.concurrent.ConcurrentHashMap$Node[]
object java.util.concurrent.ConcurrentHashMap
object org.apache.http.config.Registry
object org.apache.http.impl.conn.DefaultHttpClientConnectionOperator
object org.apache.http.impl.conn.PoolingHttpClientConnectionManager
object org.apache.http.impl.client.HttpClientBuilder$2
object java.lang.Object[]
object java.util.ArrayList
object org.apache.http.impl.client.InternalHttpClient
object org.jboss.resteasy.client.jaxrs.engines.ApacheHttpClient43Engine
object org.jboss.resteasy.client.jaxrs.internal.ResteasyClientImpl
object org.codependent.RestClient_ClientProxy
object org.codependent.RestClient_Bean
object java.lang.Object[]
object java.util.ArrayList
object io.quarkus.arc.impl.ArcContainerImpl
object io.quarkus.arc.runtime.ArcRecorder$2
field io.quarkus.resteasy.common.runtime.QuarkusInjectorFactory.CONTAINER
com.oracle.svm.core.util.UserError$UserException: No instances of sun.security.provider.NativePRNG are allowed in the image heap as this class should be initialized at image runtime. To see how this object got instantiated use -H:+TraceClassInitialization.
Detailed message:
Trace: object java.security.SecureRandom
object sun.security.ssl.SSLContextImpl$TLSContext
object sun.security.ssl.SSLSocketFactoryImpl
object org.apache.http.conn.ssl.SSLConnectionSocketFactory
object java.util.concurrent.ConcurrentHashMap$Node
object java.util.concurrent.ConcurrentHashMap$Node[]
object java.util.concurrent.ConcurrentHashMap
object org.apache.http.config.Registry
object org.apache.http.impl.conn.DefaultHttpClientConnectionOperator
object org.apache.http.impl.conn.PoolingHttpClientConnectionManager
object org.apache.http.impl.client.HttpClientBuilder$2
object java.lang.Object[]
object java.util.ArrayList
object org.apache.http.impl.client.InternalHttpClient
object org.jboss.resteasy.client.jaxrs.engines.ApacheHttpClient43Engine
object org.jboss.resteasy.client.jaxrs.internal.ResteasyClientImpl
object org.codependent.RestClient_ClientProxy
object org.codependent.RestClient_Bean
object java.lang.Object[]
object java.util.ArrayList
object io.quarkus.arc.impl.ArcContainerImpl
object io.quarkus.arc.runtime.ArcRecorder$2
field io.quarkus.resteasy.common.runtime.QuarkusInjectorFactory.CONTAINER
If I follow the instructions from the Quarkus guide regarding this error, adding the additional build parameters in the pom it still fails:
<quarkus.native.additional-build-args>--initialize-at-run-time=org.codependent.RestClient,-H:+TraceClassInitialization</quarkus.native.additional-build-args>
./mvnw package -Pnative -Dquarkus.native.container-build=true
com.oracle.svm.core.util.UserError$UserException: Classes that should be initialized at run time got initialized during image building:
org.codependent.RestClient the class was requested to be initialized at build time (from the command line). io.quarkus.runner.ApplicationImpl caused initialization of this class with the following trace:
at org.codependent.RestClient.<clinit>(RestClient.java)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at org.codependent.RestClient_Bean.<init>(RestClient_Bean.zig:135)
at io.quarkus.arc.setup.Default_ComponentsProvider.addBeans1(Default_ComponentsProvider.zig:106)
at io.quarkus.arc.setup.Default_ComponentsProvider.getComponents(Default_ComponentsProvider.zig:38)
at io.quarkus.arc.impl.ArcContainerImpl.<init>(ArcContainerImpl.java:103)
at io.quarkus.arc.Arc.initialize(Arc.java:20)
at io.quarkus.arc.runtime.ArcRecorder.getContainer(ArcRecorder.java:35)
at io.quarkus.deployment.steps.ArcProcessor$generateResources20.deploy_0(ArcProcessor$generateResources20.zig:72)
at io.quarkus.deployment.steps.ArcProcessor$generateResources20.deploy(ArcProcessor$generateResources20.zig:36)
at io.quarkus.runner.ApplicationImpl.<clinit>(ApplicationImpl.zig:338)
org.codependent.RestClient_ClientProxy the class was requested to be initialized at build time (subtype of org.codependent.RestClient). io.quarkus.runner.ApplicationImpl caused initialization of this class with the following trace:
at org.codependent.RestClient_ClientProxy.<clinit>(RestClient_ClientProxy.zig)
at org.codependent.RestClient_Bean.<init>(RestClient_Bean.zig:164)
at io.quarkus.arc.setup.Default_ComponentsProvider.addBeans1(Default_ComponentsProvider.zig:106)
at io.quarkus.arc.setup.Default_ComponentsProvider.getComponents(Default_ComponentsProvider.zig:38)
at io.quarkus.arc.impl.ArcContainerImpl.<init>(ArcContainerImpl.java:103)
at io.quarkus.arc.Arc.initialize(Arc.java:20)
at io.quarkus.arc.runtime.ArcRecorder.getContainer(ArcRecorder.java:35)
at io.quarkus.deployment.steps.ArcProcessor$generateResources20.deploy_0(ArcProcessor$generateResources20.zig:72)
at io.quarkus.deployment.steps.ArcProcessor$generateResources20.deploy(ArcProcessor$generateResources20.zig:36)
at io.quarkus.runner.ApplicationImpl.<clinit>(ApplicationImpl.zig:338)
at com.oracle.svm.core.util.UserError.abort(UserError.java:65)
at com.oracle.svm.hosted.classinitialization.ConfigurableClassInitialization.checkDelayedInitialization(ConfigurableClassInitialization.java:510)
at com.oracle.svm.hosted.classinitialization.ClassInitializationFeature.duringAnalysis(ClassInitializationFeature.java:187)
at com.oracle.svm.hosted.NativeImageGenerator.lambda$runPointsToAnalysis$8(NativeImageGenerator.java:710)
at com.oracle.svm.hosted.FeatureHandler.forEachFeature(FeatureHandler.java:63)
at com.oracle.svm.hosted.NativeImageGenerator.runPointsToAnalysis(NativeImageGenerator.java:710)
at com.oracle.svm.hosted.NativeImageGenerator.doRun(NativeImageGenerator.java:530)
at com.oracle.svm.hosted.NativeImageGenerator.lambda$run$0(NativeImageGenerator.java:445)
at java.util.concurrent.ForkJoinTask$AdaptedRunnableAction.exec(ForkJoinTask.java:1386)
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
The problem happens when the RestClient is defined as an @ApplicationScoped component. If I change it so that it is instantiated the native image generation doesn't have any problem:
@Path("/echo")
public class ExampleResource {
private final RestClient restClient;
public ExampleResource(){
this.restClient = new RestClient();
}
@GET
@Produces(MediaType.TEXT_PLAIN)
public Response get() {
return restClient.get();
}
}
public class RestClient {
private final Client httpClient;
public RestClient() {
this.httpClient = ResteasyClientBuilder.newBuilder().build();
}
public Response get() {
return httpClient.target("https://postman-echo.com/get").request().get();
}
}
./mvnw package -Pnative -Dquarkus.native.container-build=true
[INFO] [io.quarkus.deployment.QuarkusAugmentor] Quarkus augmentation completed in 72716ms
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 01:14 min
[INFO] Finished at: 2020-03-21T12:48:07+01:00
[INFO] -
The question is how can I define the RestClient as an @ApplicationScoped component and be able to generate a native image?
As answered here, you are not using the MicroProfile REST Client, but instead the JAX-RS Client.
In any case, you can get your code working in native mode by changing the RestClient class to:
@ApplicationScoped
public class RestClient {
private Client client;
public Response get() {
return getClient().target("https://postman-echo.com/get").request().get();
}
private Client getClient() {
if (client == null) {
client = ResteasyClientBuilder.newBuilder().build();
}
return client;
}
}
and also adding:
quarkus.native.enable-https-url-handler=true
to application.properties