feat(crd-generator): Add CRD-Generator CLI

crd-generator/cli/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    Copyright (C) 2015 Red Hat, Inc.
+
+    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">
+  <parent>
+    <artifactId>crd-generator-parent</artifactId>
+    <groupId>io.fabric8</groupId>
+    <version>6.13-SNAPSHOT</version>
+  </parent>
+  <modelVersion>4.0.0</modelVersion>
+
+  <artifactId>crd-generator-cli</artifactId>
+  <name>Fabric8 :: CRD generator :: CLI</name>
+
+  <dependencies>
+    <dependency>
+      <groupId>io.fabric8</groupId>
+      <artifactId>crd-generator-collector</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+
+    <dependency>
+      <groupId>info.picocli</groupId>
+      <artifactId>picocli</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>org.slf4j</groupId>
+      <artifactId>slf4j-simple</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-api</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-engine</artifactId>
+      <scope>test</scope>
+    </dependency>
+
+  </dependencies>
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <configuration>
+          <annotationProcessorPaths>
+            <path>
+              <groupId>info.picocli</groupId>
+              <artifactId>picocli-codegen</artifactId>
+              <version>${picocli.version}</version>
+            </path>
+          </annotationProcessorPaths>
+          <compilerArgs>
+            <arg>-Aproject=${project.groupId}/${project.artifactId}</arg>
+          </compilerArgs>
+        </configuration>
+      </plugin>
+
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-shade-plugin</artifactId>
+        <version>3.5.2</version>
+        <executions>
+            <execution>
+                <phase>package</phase>
+                <goals>
+                    <goal>shade</goal>
+                </goals>
+                <configuration>
+                    <transformers>
+                        <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer" />
+                        <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+                            <mainClass>io.fabric8.crd.generator.cli.CRDGeneratorCLI</mainClass>
+                        </transformer>
+                    </transformers>
+                    <createDependencyReducedPom>false</createDependencyReducedPom>
+                    <filters>
+                        <filter>
+                            <artifact>*:*</artifact>
+                            <excludes>
+                                <exclude>META-INF/*.SF</exclude>
+                                <exclude>META-INF/*.DSA</exclude>
+                                <exclude>META-INF/*.RSA</exclude>
+                            </excludes>
+                        </filter>
+                    </filters>
+                </configuration>
+            </execution>
+        </executions>
+    </plugin>
+
+    <!-- now make the jar chmod +x style executable -->
+    <plugin>
+        <groupId>org.skife.maven</groupId>
+        <artifactId>really-executable-jar-maven-plugin</artifactId>
+        <version>2.1.1</version>
+        <configuration>
+            <flags>-Xmx1G</flags>
+            <programFile>java-gen</programFile>
+            <attachProgramFile>true</attachProgramFile>
+        </configuration>
+
+        <executions>
+            <execution>
+                <phase>package</phase>
+                <goals>
+                    <goal>really-executable-jar</goal>
+                </goals>
+            </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+</project>

crd-generator/cli/src/main/java/io/fabric8/crd/generator/cli/CRDGeneratorCLI.java

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+/*
+ * Copyright (C) 2015 Red Hat, Inc.
+ *
+ * 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.fabric8.crd.generator.cli;
+
+import io.fabric8.crd.generator.collector.CustomResourceCollector;
+import io.fabric8.crdv2.generator.CRDGenerationInfo;
+import io.fabric8.crdv2.generator.CRDGenerator;
+import io.fabric8.crdv2.generator.CustomResourceInfo;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import picocli.CommandLine;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.util.ArrayList;
+import java.util.List;
+
+@CommandLine.Command(name = "crd-gen", mixinStandardHelpOptions = true, helpCommand = true, versionProvider = KubernetesClientVersionProvider.class)
+public class CRDGeneratorCLI implements Runnable {
+
+  private static final Logger log = LoggerFactory.getLogger(CustomResourceCollector.class);
+  private static final CRDGenerationInfo EMPTY_INFO = new CRDGenerationInfo();
+
+  @CommandLine.Spec
+  CommandLine.Model.CommandSpec spec;
+
+  @CommandLine.Option(names = { "-c",
+      "--classes" }, description = "Directories or JAR files to be used to scan for Custom Resource classes")
+  List<File> classesToIndex;
+
+  @CommandLine.Option(names = { "-cr",
+      "--custom-resource" }, description = "Custom Resource classes, which should be considered to generate the CRDs. If set, scanning is disabled.")
+  List<String> customResourceClasses;
+
+  @CommandLine.Option(names = { "-cp", "--classpath" }, description = "The classpath which be used during the CRD generation")
+  List<String> classpaths = new ArrayList<>();
+
+  @CommandLine.Option(names = { "-o", "--output-dir" }, description = "The output directory for the generated CRDs")
+  File outputDirectory = new File(".");
+
+  @CommandLine.Option(names = { "-f",
+      "--force-index" }, description = "If true, a Jandex index will be created even if the directory or JAR file contains an existing index.", defaultValue = "false")
+  Boolean forceIndex;
+
+  @CommandLine.Option(names = { "-p", "--parallel" }, description = "Enable parallel generation", defaultValue = "true")
+  Boolean parallel;
+
+  @CommandLine.Option(names = {
+      "--implicit-preserve-unknown-fields" }, description = "If enabled, all objects are implicitly marked with x-kubernetes-preserve-unknown-fields: true.", defaultValue = "false")
+  Boolean implicitPreserveUnknownFields;
+
+  private CRDGenerationInfo crdGenerationInfo = EMPTY_INFO;
+
+  @Override
+  public void run() {
+    CustomResourceCollector customResourceCollector = new CustomResourceCollector()
+        .withParentClassLoader(Thread.currentThread().getContextClassLoader())
+        .withClasspaths(classpaths)
+        .withFilesToIndex(classesToIndex)
+        .withForceIndex(forceIndex)
+        // TODO: allow to exclude / include
+        /*
+         * .withIncludePackages(inclusions.getPackages())
+         * .withIncludeGroups(inclusions.getGroups())
+         * .withIncludeVersions(inclusions.getVersions())
+         * .withExcludePackages(exclusions.getPackages())
+         * .withExcludeGroups(exclusions.getGroups())
+         * .withExcludeVersions(exclusions.getVersions())
+         */
+        .withCustomResourceClasses(customResourceClasses);
+
+    CustomResourceInfo[] customResourceInfos = customResourceCollector.findCustomResources();
+
+    log.info("Found {} CustomResources", customResourceInfos.length);
+
+    try {
+      Files.createDirectories(outputDirectory.toPath());
+    } catch (IOException e) {
+      throw new RuntimeException("Could not create output directory: " + e.getMessage());
+    }
+
+    CRDGenerator crdGenerator = new CRDGenerator()
+        .customResources(customResourceInfos)
+        .withParallelGenerationEnabled(parallel)
+        .withImplicitPreserveUnknownFields(implicitPreserveUnknownFields)
+        .inOutputDir(outputDirectory);
+
+    crdGenerationInfo = crdGenerator.detailedGenerate();
+    crdGenerationInfo.getCRDDetailsPerNameAndVersion().forEach((crdName, versionToInfo) -> {
+      log.info("Generated CRD {}:", crdName);
+      versionToInfo.forEach(
+          (version, info) -> log.info(" {} -> {}", version, info.getFilePath()));
+    });
+  }
+
+  public CRDGenerationInfo getCrdGenerationInfo() {
+    return crdGenerationInfo;
+  }
+
+  public static void main(String[] args) {
+    int exitCode = new CommandLine(new CRDGeneratorCLI()).execute(args);
+    System.exit(exitCode);
+  }
+}

crd-generator/cli/src/main/java/io/fabric8/crd/generator/cli/KubernetesClientVersionProvider.java

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+/*
+ * Copyright (C) 2015 Red Hat, Inc.
+ *
+ * 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.fabric8.crd.generator.cli;
+
+import io.fabric8.kubernetes.client.Version;
+import picocli.CommandLine;
+
+public class KubernetesClientVersionProvider implements CommandLine.IVersionProvider {
+  @Override
+  public String[] getVersion() throws Exception {
+    return new String[] { Version.clientVersion() };
+  }
+}

crd-generator/cli/src/test/java/io/fabric8/crd/generator/cli/CRDGeneratorCLITest.java

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+/*
+ * Copyright (C) 2015 Red Hat, Inc.
+ *
+ * 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.fabric8.crd.generator.cli;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
+import picocli.CommandLine;
+
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+public class CRDGeneratorCLITest {
+
+  @Test
+  public void givenNoInput_thenGenerateNoCRDs() {
+    CRDGeneratorCLI cliApp = new CRDGeneratorCLI();
+    CommandLine cmd = new CommandLine(cliApp);
+    int exitCode = cmd.execute();
+    assertEquals(0, exitCode);
+    assertEquals(0, cliApp.getCrdGenerationInfo().numberOfGeneratedCRDs());
+  }
+
+  @Test
+  public void givenSingleCRClassNameFromSameClasspath_thenGenerate(@TempDir Path tempDir) {
+    CRDGeneratorCLI cliApp = new CRDGeneratorCLI();
+    CommandLine cmd = new CommandLine(cliApp);
+    String[] args = new String[] {
+        "-cr", "io.fabric8.crd.generator.cli.examples.basic.Basic",
+        "-o", tempDir.toString()
+    };
+    int exitCode = cmd.execute(args);
+    assertEquals(0, exitCode);
+    assertEquals(1, cliApp.getCrdGenerationInfo().numberOfGeneratedCRDs());
+    assertTrue(Paths.get(tempDir.toString(), "basics.sample.fabric8.io-v1.yml").toFile().exists());
+  }
+
+  @Test
+  public void givenSingleCRClassNameFromExternalClasspath_thenGenerate(@TempDir Path tempDir) {
+    CRDGeneratorCLI cliApp = new CRDGeneratorCLI();
+    CommandLine cmd = new CommandLine(cliApp);
+    String[] args = new String[] {
+        "-cp", "../api-v2/target/test-classes/",
+        "-cr", "io.fabric8.crdv2.example.basic.Basic",
+        "-o", tempDir.toString()
+    };
+
+    int exitCode = cmd.execute(args);
+    assertEquals(0, exitCode);
+    assertEquals(1, cliApp.getCrdGenerationInfo().numberOfGeneratedCRDs());
+    assertTrue(Paths.get(tempDir.toString(), "basics.sample.fabric8.io-v1.yml").toFile().exists());
+  }
+
+  @Test
+  public void givenClassesDirectory_thenScanAndGenerate(@TempDir Path tempDir) {
+    CRDGeneratorCLI cliApp = new CRDGeneratorCLI();
+    CommandLine cmd = new CommandLine(cliApp);
+    String[] args = new String[] {
+        "-c", "target/test-classes/",
+        //"-k", "basics.sample.fabric8.io",
+        "-o", tempDir.toString()
+    };
+
+    int exitCode = cmd.execute(args);
+    assertEquals(0, exitCode);
+    assertEquals(1, cliApp.getCrdGenerationInfo().numberOfGeneratedCRDs());
+    assertTrue(Paths.get(tempDir.toString(), "basics.sample.fabric8.io-v1.yml").toFile().exists());
+  }
+}

crd-generator/cli/src/test/java/io/fabric8/crd/generator/cli/examples/basic/Basic.java

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+/*
+ * Copyright (C) 2015 Red Hat, Inc.
+ *
+ * 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.fabric8.crd.generator.cli.examples.basic;
+
+import io.fabric8.kubernetes.api.model.Namespaced;
+import io.fabric8.kubernetes.client.CustomResource;
+import io.fabric8.kubernetes.model.annotation.Group;
+import io.fabric8.kubernetes.model.annotation.Version;
+
+@Group("sample.fabric8.io")
+@Version("v1alpha1")
+public class Basic extends CustomResource<BasicSpec, BasicStatus> implements Namespaced {
+
+}