Initial ffm support

- Starter for jline ffm terminal provider
- Build changes for compiling with gradle toolchains
  defaulting to jdk22
- spring-shell-sample-ffm which compiles with jdk22
- ci workflow setups jdk 17/22
- Relates spring-projects#1131

.github/workflows/ci.yml

@@ -28,7 +28,9 @@ jobs:
       - uses: actions/setup-java@v3
         with:
           distribution: adopt
-          java-version: ${{ matrix.java }}
+          java-version: |
+            22
+            17
           cache: gradle
       - name: Build
         run: ./gradlew build
@@ -41,7 +43,9 @@ jobs:
       - uses: actions/setup-java@v3
         with:
           distribution: adopt
-          java-version: 17
+          java-version: |
+            22
+            17
           cache: gradle
       - uses: jfrog/setup-jfrog-cli@v3
         with:

buildSrc/build.gradle

@@ -52,5 +52,9 @@ gradlePlugin {
 			id = "org.springframework.shell.sample"
 			implementationClass = "org.springframework.shell.gradle.SamplePlugin"
 		}
+		toolchainPlugin {
+			id = "org.springframework.shell.toolchain"
+			implementationClass = "org.springframework.shell.gradle.ToolchainPlugin"
+		}
 	}
 }

buildSrc/src/main/java/org/springframework/shell/gradle/ToolchainExtension.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2024 the original author or 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 org.springframework.shell.gradle;
+
+import org.gradle.api.Project;
+import org.gradle.api.provider.Property;
+import org.gradle.jvm.toolchain.JavaLanguageVersion;
+
+public class ToolchainExtension {
+
+	private final Property<JavaLanguageVersion> maximumCompatibleJavaVersion;
+
+	private final JavaLanguageVersion javaVersion;
+
+	public ToolchainExtension(Project project) {
+		this.maximumCompatibleJavaVersion = project.getObjects().property(JavaLanguageVersion.class);
+		String toolchainVersion = (String) project.findProperty("toolchainVersion");
+		this.javaVersion = (toolchainVersion != null) ? JavaLanguageVersion.of(toolchainVersion) : null;
+	}
+
+	public Property<JavaLanguageVersion> getMaximumCompatibleJavaVersion() {
+		return this.maximumCompatibleJavaVersion;
+	}
+
+	JavaLanguageVersion getJavaVersion() {
+		return this.javaVersion;
+	}
+
+}

buildSrc/src/main/java/org/springframework/shell/gradle/ToolchainPlugin.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2024 the original author or 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 org.springframework.shell.gradle;
+
+import org.gradle.api.Plugin;
+import org.gradle.api.Project;
+import org.gradle.api.plugins.JavaPluginExtension;
+import org.gradle.jvm.toolchain.JavaLanguageVersion;
+import org.gradle.jvm.toolchain.JavaToolchainSpec;
+
+public class ToolchainPlugin implements Plugin<Project> {
+
+	@Override
+	public void apply(Project project) {
+		configureToolchain(project);
+	}
+
+	private void configureToolchain(Project project) {
+		ToolchainExtension toolchain = project.getExtensions().create("toolchain", ToolchainExtension.class, project);
+		project.afterEvaluate((evaluated) -> configure(evaluated, toolchain));
+	}
+
+	private void configure(Project project, ToolchainExtension toolchain) {
+		JavaLanguageVersion toolchainVersion = toolchain.getJavaVersion();
+		if (toolchainVersion == null) {
+			toolchainVersion = JavaLanguageVersion.of(22);
+		}
+		JavaToolchainSpec toolchainSpec = project.getExtensions()
+			.getByType(JavaPluginExtension.class)
+			.getToolchain();
+		toolchainSpec.getLanguageVersion().set(toolchainVersion);
+	}
+
+}

spring-shell-samples/spring-shell-sample-ffm/spring-shell-sample-ffm.gradle

@@ -0,0 +1,20 @@
+plugins {
+	id 'org.springframework.shell.sample'
+	id 'org.springframework.shell.toolchain'
+}
+
+description = 'Spring Shell Sample FFM'
+
+tasks.named("bootJar") {
+	manifest {
+		attributes 'Enable-Native-Access': 'ALL-UNNAMED'
+	}
+}
+
+dependencies {
+	management platform(project(":spring-shell-management"))
+	implementation project(':spring-shell-starters:spring-shell-starter-ffm')
+	testImplementation project(':spring-shell-starters:spring-shell-starter-test')
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+	testImplementation 'org.awaitility:awaitility'
+}

spring-shell-samples/spring-shell-sample-ffm/src/main/java/org/springframework/shell/samples/ffm/SpringShellApplication.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2024 the original author or 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 org.springframework.shell.samples.ffm;
+
+import org.springframework.boot.Banner.Mode;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.shell.command.annotation.CommandScan;
+
+@SpringBootApplication
+@CommandScan
+public class SpringShellApplication {
+
+	public static void main(String[] args) throws Exception {
+		SpringApplication application = new SpringApplication(SpringShellApplication.class);
+		application.setBannerMode(Mode.OFF);
+		application.run(args);
+	}
+
+}

spring-shell-samples/spring-shell-sample-ffm/src/main/resources/application.yml

@@ -0,0 +1,18 @@
+spring:
+  main:
+    banner-mode: off
+  shell:
+    interactive:
+      enabled: true
+## disable console logging
+logging:
+  pattern:
+    console:
+## log debug from a cli
+  # file:
+  #   name: shell-ffm.log
+  # level:
+  #   root: debug
+  #   org:
+  #     springframework:
+  #       shell: debug

spring-shell-samples/spring-shell-sample-ffm/src/test/java/org/springframework/shell/samples/ffm/SpringShellApplicationTests.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2024 the original author or 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 org.springframework.shell.samples.ffm;
+
+public class SpringShellApplicationTests {
+
+}

spring-shell-starters/spring-shell-starter-ffm/spring-shell-starter-ffm.gradle

@@ -0,0 +1,12 @@
+plugins {
+	id 'org.springframework.shell.starter'
+	id 'org.springframework.shell.toolchain'
+}
+
+description = 'Spring Shell Starter FFM'
+
+dependencies {
+	management platform(project(':spring-shell-management'))
+	api(project(':spring-shell-starters:spring-shell-starter'))
+	implementation 'org.jline:jline-terminal-ffm'
+}