Add support for HTTP POJA feature

starter-core/src/main/java/io/micronaut/starter/feature/server/HttpPoja.java

@@ -0,0 +1,66 @@
+/*
+ * Copyright 2017-2022 original authors
+ *
+ * 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
+ *
+ * https://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.micronaut.starter.feature.server;
+
+import io.micronaut.core.annotation.NonNull;
+import io.micronaut.starter.application.generator.GeneratorContext;
+import io.micronaut.starter.build.dependencies.Dependency;
+import io.micronaut.starter.options.BuildTool;
+import jakarta.inject.Singleton;
+
+@Singleton
+public class HttpPoja extends AbstractMicronautServerFeature {
+
+    @Override
+    public String getName() {
+        return "http-poja";
+    }
+
+    @Override
+    public String getTitle() {
+        return "Plain Old Java HTTP Application";
+    }
+
+    @Override
+    public String getDescription() {
+        return "Add support for HTTP POJA based on Apache libraries";
+    }
+
+    @Override
+    public String getMicronautDocumentation() {
+        return "https://micronaut-projects.github.io/micronaut-servlet/latest/guide/index.html#httpPoja";
+    }
+
+    @Override
+    public void doApply(GeneratorContext generatorContext) {
+        if (generatorContext.getBuildTool() == BuildTool.MAVEN) {
+            generatorContext.addDependency(Dependency.builder()
+                    .groupId("io.micronaut.servlet")
+                    .artifactId("micronaut-http-poja-apache")
+                    .compile());
+            generatorContext.addDependency(Dependency.builder()
+                    .groupId("io.micronaut.servlet")
+                    .artifactId("micronaut-http-poja-test")
+                    .test());
+        }
+    }
+
+    @Override
+    @NonNull
+    public String resolveMicronautRuntime(@NonNull GeneratorContext generatorContext) {
+        return "http_poja";
+    }
+}

starter-core/src/test/groovy/io/micronaut/starter/feature/build/maven/MavenSpec.groovy

@@ -191,6 +191,7 @@ class MavenSpec extends ApplicationContextSpec implements CommandOutputFixture {
         ApplicationType.DEFAULT     | ["aws-lambda", 'graalvm']       | "lambda"
         ApplicationType.DEFAULT     | ["tomcat-server"]               | "tomcat"
         ApplicationType.DEFAULT     | ["jetty-server"]                | "jetty"
+        ApplicationType.DEFAULT     | ["http-poja"]                   | "http_poja"
         ApplicationType.DEFAULT     | ["netty-server"]                | "netty"
         ApplicationType.DEFAULT     | ["undertow-server"]             | "undertow"
     }

starter-core/src/test/groovy/io/micronaut/starter/feature/server/HttpPojaTestSpec.groovy

@@ -0,0 +1,41 @@
+package io.micronaut.starter.feature.server
+
+import io.micronaut.starter.BeanContextSpec
+import io.micronaut.starter.BuildBuilder
+import io.micronaut.starter.build.BuildTestUtil
+import io.micronaut.starter.build.BuildTestVerifier
+import io.micronaut.starter.fixture.CommandOutputFixture
+import io.micronaut.starter.options.BuildTool
+import io.micronaut.starter.options.Language
+
+class HttpPojaTestSpec extends BeanContextSpec implements CommandOutputFixture {
+
+    void 'test readme.md with feature http-poja contains links to micronaut docs'() {
+        when:
+        Map<String, String> output = generate(['http-poja'])
+        String readme = output["README.md"]
+
+        then:
+        readme
+        readme.contains("https://micronaut-projects.github.io/micronaut-servlet/latest/guide/index.html#httpPoja")
+    }
+
+    void 'test #buildTool http-poja feature for language=#language'(Language language, BuildTool buildTool) {
+        when:
+        String template = new BuildBuilder(beanContext, buildTool)
+                .language(language)
+                .features(["http-poja"])
+                .render()
+        BuildTestVerifier verifier = BuildTestUtil.verifier(buildTool, language, template)
+
+        then:
+        template.contains("runtime(\"http_poja\")") || template.contains("<micronaut.runtime>http_poja</micronaut.runtime>")
+
+        and: "Contains required dependencies"
+        buildTool != BuildTool.MAVEN
+                || template.contains("micronaut-http-poja-apache") && template.contains("micronaut-http-poja-test")
+
+        where:
+        [language, buildTool] << [Language.values().toList(), BuildTool.values()].combinations()
+    }
+}

starter-core/src/test/groovy/io/micronaut/starter/feature/server/ServerSpec.groovy

@@ -25,6 +25,7 @@ class ServerSpec extends ApplicationContextSpec {
         "jetty-server"    | 'runtime("jetty")'
         "tomcat-server"   | 'runtime("tomcat")'
         "undertow-server" | 'runtime("undertow")'
+        "http-poja"       | 'runtime("http_poja")'
     }
 
     @Unroll
@@ -79,11 +80,12 @@ class ServerSpec extends ApplicationContextSpec {
         "jetty-server"    | 'io.micronaut.servlet' | 'micronaut-http-server-jetty'
         "tomcat-server"   | 'io.micronaut.servlet' | 'micronaut-http-server-tomcat'
         "undertow-server" | 'io.micronaut.servlet' | 'micronaut-http-server-undertow'
+        "http-poja"       | 'io.micronaut.servlet' | 'micronaut-http-poja-apache'
     }
 
     void 'test there can only be one server feature'() {
         when:
-        getFeatures(["netty-server", "jetty-server", "tomcat-server", "undertow-server"])
+        getFeatures(["netty-server", "jetty-server", "tomcat-server", "undertow-server", "http-poja"])
 
         then:
         def ex = thrown(IllegalArgumentException)