Rework docker && project files

src/main/java/tech/jhipster/lite/common/domain/FileUtils.java

@@ -147,12 +147,6 @@ public static Optional<String> readLineInClasspath(String filename, String value
     return Optional.empty();
   }
 
-  public static List<String> readLinesInClasspath(String filename) {
-    Assert.notBlank(FILENAME, filename);
-
-    return new BufferedReader(new InputStreamReader(getInputStream(filename))).lines().toList();
-  }
-
   private static InputStream getInputStream(String... paths) {
     InputStream in = FileUtils.class.getResourceAsStream(FILE_SEPARATOR + getPath(paths));
 

src/main/java/tech/jhipster/lite/common/domain/ProjectFilesReader.java

@@ -0,0 +1,5 @@
+package tech.jhipster.lite.common.domain;
+
+public interface ProjectFilesReader {
+  String read(String path);
+}

src/main/java/tech/jhipster/lite/generator/module/domain/FilesReader.java → src/main/java/tech/jhipster/lite/common/infrastructure/secondary/FileSystemProjectFilesReader.java

@@ -1,24 +1,26 @@
-package tech.jhipster.lite.generator.module.domain;
+package tech.jhipster.lite.common.infrastructure.secondary;
 
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.charset.StandardCharsets;
 import org.apache.commons.io.IOUtils;
+import org.springframework.stereotype.Service;
 import tech.jhipster.lite.common.domain.Generated;
+import tech.jhipster.lite.common.domain.ProjectFilesReader;
 import tech.jhipster.lite.error.domain.Assert;
 import tech.jhipster.lite.error.domain.GeneratorException;
 
-public final class FilesReader {
+@Service
+public class FileSystemProjectFilesReader implements ProjectFilesReader {
 
   private static final String SLASH = "/";
 
-  private FilesReader() {}
-
+  @Override
   @Generated
-  public static String readContent(String path) {
+  public String read(String path) {
     Assert.notBlank("path", path);
 
-    try (InputStream input = FilesReader.class.getResourceAsStream(path.replace("\\", SLASH))) {
+    try (InputStream input = FileSystemProjectFilesReader.class.getResourceAsStream(path.replace("\\", SLASH))) {
       if (input == null) {
         throw new GeneratorException("Can't find file: " + path);
       }

src/main/java/tech/jhipster/lite/generator/docker/DockerImages.java

@@ -0,0 +1,29 @@
+package tech.jhipster.lite.generator.docker;
+
+import org.springframework.stereotype.Service;
+import tech.jhipster.lite.generator.docker.application.DockerImagesApplicationService;
+import tech.jhipster.lite.generator.docker.domain.DockerImage;
+import tech.jhipster.lite.generator.docker.domain.DockerImageName;
+
+@Service
+public class DockerImages {
+
+  private final DockerImagesApplicationService dockerImagesApplicationService;
+
+  public DockerImages(DockerImagesApplicationService dockerImages) {
+    this.dockerImagesApplicationService = dockerImages;
+  }
+
+  /**
+   * Get docker image information
+   *
+   * @param imageName
+   *          name of the image to get information for
+   * @return The docker image with this name
+   * @throws UnknownDockerImageException
+   *           if the image can't be found
+   */
+  public DockerImage get(String imageName) {
+    return dockerImagesApplicationService.get(new DockerImageName(imageName)).orElseThrow(() -> new UnknownDockerImageException(imageName));
+  }
+}

src/main/java/tech/jhipster/lite/generator/docker/UnknownDockerImageException.java

@@ -0,0 +1,10 @@
+package tech.jhipster.lite.generator.docker;
+
+import tech.jhipster.lite.error.domain.GeneratorException;
+
+class UnknownDockerImageException extends GeneratorException {
+
+  public UnknownDockerImageException(String imageName) {
+    super("Can't find image " + imageName + ", forgot to add it to src/main/resources/generator/dependencies/Dockerfile?");
+  }
+}

src/main/java/tech/jhipster/lite/generator/docker/application/DockerImagesApplicationService.java

@@ -0,0 +1,21 @@
+package tech.jhipster.lite.generator.docker.application;
+
+import java.util.Optional;
+import org.springframework.stereotype.Service;
+import tech.jhipster.lite.generator.docker.domain.DockerImage;
+import tech.jhipster.lite.generator.docker.domain.DockerImageName;
+import tech.jhipster.lite.generator.docker.domain.DockerImagesRepository;
+
+@Service
+public class DockerImagesApplicationService {
+
+  private final DockerImagesRepository dockerImages;
+
+  public DockerImagesApplicationService(DockerImagesRepository dockerImages) {
+    this.dockerImages = dockerImages;
+  }
+
+  public Optional<DockerImage> get(DockerImageName imageName) {
+    return dockerImages.get(imageName);
+  }
+}

src/main/java/tech/jhipster/lite/generator/docker/domain/DockerImage.java

@@ -0,0 +1,14 @@
+package tech.jhipster.lite.generator.docker.domain;
+
+import tech.jhipster.lite.error.domain.Assert;
+
+public record DockerImage(String imageName, String version) {
+  public DockerImage {
+    Assert.notNull("imageName", imageName);
+    Assert.notNull("version", version);
+  }
+
+  public String fullName() {
+    return imageName() + ":" + version();
+  }
+}

src/main/java/tech/jhipster/lite/generator/docker/domain/DockerImageName.java

@@ -0,0 +1,15 @@
+package tech.jhipster.lite.generator.docker.domain;
+
+import tech.jhipster.lite.error.domain.Assert;
+
+public record DockerImageName(String imageName) {
+  public DockerImageName(String imageName) {
+    Assert.notBlank("imageName", imageName);
+
+    this.imageName = imageName.toLowerCase();
+  }
+
+  public String get() {
+    return imageName();
+  }
+}

src/main/java/tech/jhipster/lite/generator/docker/domain/DockerImagesRepository.java

@@ -0,0 +1,7 @@
+package tech.jhipster.lite.generator.docker.domain;
+
+import java.util.Optional;
+
+public interface DockerImagesRepository {
+  Optional<DockerImage> get(DockerImageName imageName);
+}

src/main/java/tech/jhipster/lite/generator/docker/infrastructure/secondary/FileSystemDockerImagesRepository.java

@@ -0,0 +1,52 @@
+package tech.jhipster.lite.generator.docker.infrastructure.secondary;
+
+import java.util.Optional;
+import java.util.function.Function;
+import java.util.function.Predicate;
+import java.util.stream.Stream;
+import org.springframework.stereotype.Repository;
+import tech.jhipster.lite.common.domain.ProjectFilesReader;
+import tech.jhipster.lite.error.domain.Assert;
+import tech.jhipster.lite.generator.docker.domain.DockerImage;
+import tech.jhipster.lite.generator.docker.domain.DockerImageName;
+import tech.jhipster.lite.generator.docker.domain.DockerImagesRepository;
+
+@Repository
+class FileSystemDockerImagesRepository implements DockerImagesRepository {
+
+  private static final String DOCKER_FROM = "from ";
+
+  private final ProjectFilesReader files;
+
+  public FileSystemDockerImagesRepository(ProjectFilesReader files) {
+    this.files = files;
+  }
+
+  @Override
+  public Optional<DockerImage> get(DockerImageName imageName) {
+    Assert.notNull("imageName", imageName);
+
+    return Stream
+      .of(files.read("/generator/dependencies/Dockerfile").split("[\r\n]"))
+      .map(String::trim)
+      .map(String::toLowerCase)
+      .filter(imageLine(imageName))
+      .findFirst()
+      .map(toDockerImage());
+  }
+
+  private Predicate<String> imageLine(DockerImageName imageName) {
+    return line -> line.startsWith(DOCKER_FROM + imageName.get() + ":");
+  }
+
+  private Function<String, DockerImage> toDockerImage() {
+    return line -> {
+      int versionSeparatorIndex = line.lastIndexOf(":");
+
+      return new DockerImage(
+        line.substring(DOCKER_FROM.length(), versionSeparatorIndex),
+        line.substring(versionSeparatorIndex + 1, line.length())
+      );
+    };
+  }
+}

src/main/java/tech/jhipster/lite/generator/module/domain/JHipsterFileContent.java

@@ -1,6 +1,7 @@
 package tech.jhipster.lite.generator.module.domain;
 
 import java.nio.file.Path;
+import tech.jhipster.lite.common.domain.ProjectFilesReader;
 import tech.jhipster.lite.error.domain.Assert;
 
 class JHipsterFileContent {
@@ -13,10 +14,11 @@ class JHipsterFileContent {
     this.source = source;
   }
 
-  public String read(JHipsterModuleContext context) {
+  public String read(ProjectFilesReader files, JHipsterModuleContext context) {
+    Assert.notNull("files", files);
     Assert.notNull("context", context);
 
-    String rawContent = FilesReader.readContent(source.toString());
+    String rawContent = files.read(source.toString());
     return ArgumentsReplacer.replaceArguments(rawContent, context.get());
   }
 }

src/main/java/tech/jhipster/lite/generator/module/domain/TemplatedFile.java

@@ -1,6 +1,7 @@
 package tech.jhipster.lite.generator.module.domain;
 
 import java.nio.file.Path;
+import tech.jhipster.lite.common.domain.ProjectFilesReader;
 import tech.jhipster.lite.error.domain.Assert;
 import tech.jhipster.lite.generator.module.domain.properties.JHipsterProjectFolder;
 
@@ -33,8 +34,8 @@ public Path path(JHipsterProjectFolder projectFolder) {
     return file.destination().pathInProject(projectFolder);
   }
 
-  public String content() {
-    return file.content().read(context);
+  public String content(ProjectFilesReader files) {
+    return file.content().read(files, context);
   }
 
   static class TemplatedFileBuilder {

src/main/java/tech/jhipster/lite/generator/module/infrastructure/secondary/FileSystemCurrentJavaDependenciesVersionsRepository.java

@@ -3,8 +3,7 @@
 import java.util.List;
 import java.util.regex.Pattern;
 import org.springframework.stereotype.Repository;
-import tech.jhipster.lite.common.domain.Generated;
-import tech.jhipster.lite.generator.module.domain.FilesReader;
+import tech.jhipster.lite.common.domain.ProjectFilesReader;
 import tech.jhipster.lite.generator.module.domain.javadependency.CurrentJavaDependenciesVersions;
 import tech.jhipster.lite.generator.module.domain.javadependency.JavaDependenciesCurrentVersionsRepository;
 import tech.jhipster.lite.generator.module.domain.javadependency.JavaDependencyVersion;
@@ -15,15 +14,17 @@ class FileSystemCurrentJavaDependenciesVersionsRepository implements JavaDepende
   private static final String CURRENT_VERSIONS_FILE = "/generator/dependencies/pom.xml";
   private static final Pattern VERSIONS_PATTERN = Pattern.compile("<([^>]+)\\.version>([^>]+)<\\/");
 
+  private final ProjectFilesReader files;
   private final CurrentJavaDependenciesVersions versions;
 
-  public FileSystemCurrentJavaDependenciesVersionsRepository() {
+  public FileSystemCurrentJavaDependenciesVersionsRepository(ProjectFilesReader files) {
+    this.files = files;
+
     versions = readVersions();
   }
 
-  @Generated
   private CurrentJavaDependenciesVersions readVersions() {
-    List<JavaDependencyVersion> readVersions = extractVersions(FilesReader.readContent(CURRENT_VERSIONS_FILE));
+    List<JavaDependencyVersion> readVersions = extractVersions(files.read(CURRENT_VERSIONS_FILE));
 
     return new CurrentJavaDependenciesVersions(readVersions);
   }

src/main/java/tech/jhipster/lite/generator/module/infrastructure/secondary/FileSystemJHipsterModuleFiles.java

@@ -7,6 +7,7 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.stereotype.Repository;
+import tech.jhipster.lite.common.domain.ProjectFilesReader;
 import tech.jhipster.lite.error.domain.GeneratorException;
 import tech.jhipster.lite.generator.module.domain.TemplatedFile;
 import tech.jhipster.lite.generator.module.domain.TemplatedFiles;
@@ -17,6 +18,12 @@ class FileSystemJHipsterModuleFiles {
 
   private static final Logger log = LoggerFactory.getLogger(FileSystemJHipsterModuleFiles.class);
 
+  private final ProjectFilesReader files;
+
+  public FileSystemJHipsterModuleFiles(ProjectFilesReader files) {
+    this.files = files;
+  }
+
   void create(JHipsterProjectFolder projectFolder, TemplatedFiles files) {
     files.get().forEach(writeFile(projectFolder));
   }
@@ -27,7 +34,7 @@ private Consumer<TemplatedFile> writeFile(JHipsterProjectFolder projectFolder) {
 
       try {
         Files.createDirectories(file.folder(projectFolder));
-        Files.writeString(filePath, file.content());
+        Files.writeString(filePath, file.content(files));
 
         log.debug("{} added", filePath);
       } catch (IOException e) {