gRPC native image support in SE

common/common/src/main/java/io/helidon/common/FeatureCatalog.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020 Oracle and/or its affiliates.
+ * Copyright (c) 2020, 2021 Oracle and/or its affiliates.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -45,14 +45,16 @@ final class FeatureCatalog {
                     .description("Server for gRPC services")
                     .path("grpc")
                     .flavor(HelidonFlavor.SE)
-                    .nativeSupported(false));
+                    .nativeSupported(true)
+                    .nativeDescription("Experimental support in native image"));
         add("io.helidon.grpc.client",
             FeatureDescriptor.builder()
                     .name("gRPC Client")
                     .description("Client for gRPC services")
                     .path("grpcClient")
                     .flavor(HelidonFlavor.SE)
-                    .nativeSupported(false));
+                    .nativeSupported(true)
+                    .nativeDescription("Experimental support in native image"));
         addSe("io.helidon.grpc.metrics",
               "Metrics",
               "Metrics for gRPC services",
@@ -415,7 +417,8 @@ final class FeatureCatalog {
                     .name("EL")
                     .description("ABAC Jakarta Expression Language policy support")
                     .path("Security", "Provider", "ABAC", "Policy", "EL")
-                    .nativeSupported(false));
+                    .nativeSupported(true)
+                    .nativeDescription("Properties used in expressions must have reflection configuration added"));
         add("io.helidon.security.abac.role",
             "Role",
             "ABAC Role based attribute validator",
@@ -581,6 +584,8 @@ final class FeatureCatalog {
         exclude("io.helidon.tracing.tracerresolver");
         exclude("io.helidon.webclient.jaxrs");
         exclude("io.helidon.webclient.spi");
+        exclude("io.helidon.common.context.spi");
+        exclude("io.helidon.grpc.core");
     }
 
     static Set<FeatureDescriptor> get(String packageName) {

docs/se/aot/01_introduction.adoc

@@ -1,6 +1,6 @@
 ///////////////////////////////////////////////////////////////////////////////
 
-    Copyright (c) 2020 Oracle and/or its affiliates.
+    Copyright (c) 2020, 2021 Oracle and/or its affiliates.
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
@@ -68,7 +68,7 @@ for native image.
 |✅ |{nbsp} |Integration: gRPC |{nbsp}
 |✅ |{nbsp} |OIDC |{nbsp}
 |✅ |{nbsp} |Provider: ABAC |{nbsp}
-|❓ |{nbsp} |Provider/ABAC/Policy: EL |Not yet tested.
+|✅ |{nbsp} |Provider/ABAC/Policy: EL |Not yet tested.
 |✅ |{nbsp} |Provider/ABAC: Role |{nbsp}
 |✅ |{nbsp} |Provider/ABAC: Scope |{nbsp}
 |✅ |{nbsp} |Provider/ABAC: Time |{nbsp}
@@ -103,9 +103,9 @@ for native image.
 |✅ |{nbsp} |Multi-part |{nbsp}
 |❓ |{nbsp} |Prometheus |Not yet tested.
 |✅ |{nbsp} |Websocket |Server only.
-|❓ |gRPC Server |gRPC Server |Not yet tested.
+|✅ |gRPC Server |gRPC Server |Since GraalVM 21.0.0
 |✅ |{nbsp} |Metrics |{nbsp}
-|❓ |gRPC Client |gRPC Client |Not yet tested.
+|✅ |gRPC Client |gRPC Client |Since GraalVM 21.0.0
 |✅ |{nbsp} |Metrics |{nbsp}
 |===
 

examples/grpc/client-standalone/README.md

@@ -0,0 +1,18 @@
+# Helidon gRPC Standalone client
+
+An example gRPC client. Can be used with the `basics` example that would act as a server. 
+
+This example is created to test native image on pure client side, so it does not have a server side
+implemented.
+
+## Build and run
+
+```bash
+mvn package
+java -jar target/helidon-examples-grpc-client-standalone.jar
+```
+
+The client invokes the string service on the server, and should print out:
+```
+Text 'abcde' to upper is 'ABCDE'
+```

examples/grpc/client-standalone/pom.xml

@@ -0,0 +1,87 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright (c) 2021 Oracle and/or its affiliates.
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>io.helidon.applications</groupId>
+        <artifactId>helidon-se</artifactId>
+        <version>2.2.1-SNAPSHOT</version>
+        <relativePath>../../../applications/se/pom.xml</relativePath>
+    </parent>
+    <groupId>io.helidon.examples.grpc</groupId>
+    <artifactId>helidon-examples-grpc-client-standalone</artifactId>
+    <name>Helidon gRPC Server Examples Standalone client</name>
+
+    <description>
+        A standalone client invoking a strings gRPC service (such as in basics example)
+    </description>
+
+    <properties>
+        <mainClass>io.helidon.grpc.examples.client.standalone.StandaloneClient</mainClass>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>io.helidon.grpc</groupId>
+            <artifactId>helidon-grpc-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.helidon.grpc</groupId>
+            <artifactId>helidon-grpc-client</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.grpc</groupId>
+            <artifactId>grpc-netty</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.grpc</groupId>
+            <artifactId>grpc-services</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.grpc</groupId>
+            <artifactId>grpc-protobuf</artifactId>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-dependency-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>copy-libs</id>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.xolstice.maven.plugins</groupId>
+                <artifactId>protobuf-maven-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>compile</goal>
+                            <goal>compile-custom</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>

examples/grpc/client-standalone/src/main/java/io/helidon/grpc/examples/client/standalone/StandaloneClient.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2021 Oracle and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.helidon.grpc.examples.client.standalone;
+
+import io.helidon.grpc.examples.common.StringServiceGrpc;
+import io.helidon.grpc.examples.common.Strings;
+
+import io.grpc.Channel;
+import io.grpc.ManagedChannelBuilder;
+
+/**
+ * A gRPC client using only client side libraries.
+ * To test it, please setup a server, such as the one in "basics" example of Helidon grpc examples.
+ */
+public class StandaloneClient {
+    private StandaloneClient() {
+    }
+
+    /**
+     * Start the client with a single invocation to the server.
+     *
+     * @param args ignored
+     */
+    public static void main(String[] args) {
+        Channel channel = ManagedChannelBuilder.forAddress("localhost", 1408)
+                .usePlaintext()
+                .build();
+
+        StringServiceGrpc.StringServiceBlockingStub stub = StringServiceGrpc.newBlockingStub(channel);
+
+        String text = "lower case original";
+        Strings.StringMessage request = Strings.StringMessage.newBuilder().setText(text).build();
+        Strings.StringMessage response = stub.upper(request);
+
+        System.out.println("Text '" + text + "' to upper case is '" + response.getText() + "'");
+    }
+}

examples/grpc/client-standalone/src/main/java/io/helidon/grpc/examples/client/standalone/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2021 Oracle and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Standalone gRPC client example.
+ */
+package io.helidon.grpc.examples.client.standalone;

examples/grpc/client-standalone/src/main/proto/strings.proto

@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2021 Oracle and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+syntax = "proto3";
+option java_package = "io.helidon.grpc.examples.common";
+
+service StringService {
+  rpc Upper (StringMessage) returns (StringMessage) {}
+  rpc Lower (StringMessage) returns (StringMessage) {}
+  rpc Split (StringMessage) returns (stream StringMessage) {}
+  rpc Join (stream StringMessage) returns (StringMessage) {}
+  rpc Echo (stream StringMessage) returns (stream StringMessage) {}
+}
+
+message StringMessage {
+  string text = 1;
+}

examples/grpc/security-abac/src/main/resources/META-INF/services/io.helidon.security.providers.abac.spi.AbacValidator → examples/grpc/client-standalone/src/main/resources/logging.properties

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2019 Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2021 Oracle and/or its affiliates.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -14,6 +14,7 @@
 # limitations under the License.
 #
 
-io.helidon.security.abac.scope.ScopeValidator
-io.helidon.security.abac.policy.PolicyValidator
-io.helidon.security.abac.time.TimeValidator
+handlers=io.helidon.common.HelidonConsoleHandler
+java.util.logging.SimpleFormatter.format=%1$tY.%1$tm.%1$td %1$tH:%1$tM:%1$tS %4$s %3$s !thread!: %5$s%6$s%n
+
+.level=INFO

examples/grpc/pom.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2019, 2020 Oracle and/or its affiliates. All rights reserved.
+    Copyright (c) 2019, 2021 Oracle and/or its affiliates.
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
@@ -40,5 +40,6 @@
         <module>security-abac</module>
         <module>security-outbound</module>
         <module>microprofile</module>
+        <module>client-standalone</module>
     </modules>
 </project>

examples/grpc/security-abac/src/main/resources/META-INF/native-image/helidon-examples/grpc-security-abac/reflect-config.json

@@ -0,0 +1,11 @@
+[
+    {
+        "name": "java.time.ZonedDateTime",
+        "methods": [
+            {
+                "name": "getYear",
+                "parameterTypes": []
+            }
+        ]
+    }
+]

grpc/core/src/main/resources/META-INF/helidon/native-image/reflection-config.json

@@ -0,0 +1,9 @@
+{
+    "annotated": [],
+    "class-hierarchy": [
+        "com.google.protobuf.MessageLiteOrBuilder"
+    ],
+    "classes": [
+    ],
+    "exclude": []
+}

grpc/core/src/main/resources/META-INF/native-image/io-helidon-grpc/helidon-grpc-core/native-image.properties

@@ -0,0 +1,25 @@
+#
+# Copyright (c) 2021 Oracle and/or its affiliates.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+Args=--initialize-at-build-time=com.google \
+  --initialize-at-build-time=io.grpc \
+  --initialize-at-run-time=io.netty.handler.ssl.ReferenceCountedOpenSslContext \
+  --initialize-at-run-time=io.grpc.netty.NettyServerBuilder \
+  --initialize-at-run-time=io.grpc.Context$LazyStorage \
+  --initialize-at-run-time=io.grpc.netty.Utils$ByteBufAllocatorPreferDirectHolder \
+  --initialize-at-run-time=io.grpc.netty.Utils$ByteBufAllocatorPreferHeapHolder \
+  --initialize-at-run-time=io.helidon.grpc.core.JsonbMarshaller \
+  --allow-incomplete-classpath

security/abac/policy-el/src/main/resources/META-INF/helidon/native-image/reflection-config.json

@@ -0,0 +1,9 @@
+{
+    "annotated": [],
+    "class-hierarchy": [
+        "javax.el.ExpressionFactory"
+    ],
+    "classes": [
+    ],
+    "exclude": []
+}