jooby-cli: allow to create workspace directory

fix #2109

Author: jknack

modules/jooby-cli/src/main/java/io/jooby/cli/SetCmd.java

@@ -5,10 +5,14 @@
  */
 package io.jooby.cli;
 
-import picocli.CommandLine;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.regex.Matcher;
 
 import javax.annotation.Nonnull;
-import java.nio.file.Path;
+
+import picocli.CommandLine;
 
 /**
  * Set/configure options used by the tool (for now is just for workspace).
@@ -20,12 +24,31 @@ public class SetCmd extends Cmd {
   @CommandLine.Spec
   private CommandLine.Model.CommandSpec spec;
 
-  @CommandLine.Option(names = {"-w", "--workspace"}, description = "Save the workspace directory. Projects are going to be created here")
-  private Path workspace;
+  @CommandLine.Option(names = {"-w",
+      "--workspace"}, description = "Save the workspace directory. Projects are going to be created here")
+  private String workspace;
+
+  @CommandLine.Option(names = {"-f",
+      "--force"}, description = "Force creation of workspace")
+  private boolean force;
 
   @Override public void run(@Nonnull Context ctx) throws Exception {
     if (workspace != null) {
-      ctx.setWorkspace(workspace);
+      Path path = Paths.get(
+          workspace.replaceFirst("^~", Matcher.quoteReplacement(System.getProperty("user.home"))))
+          .normalize()
+          .toAbsolutePath();
+      if (Files.exists(path)) {
+        ctx.setWorkspace(path);
+      } else {
+        if (force) {
+          Files.createDirectories(path);
+          ctx.setWorkspace(path);
+        } else {
+          ctx.println("Directory doesn't exist: " + path);
+          ctx.println("Use -f to force directory creation");
+        }
+      }
     } else {
       ctx.println(spec.commandLine().getUsageMessage());
     }

modules/jooby-kafka/src/main/java/io/jooby/kafka/KafkaHelper.java

@@ -13,7 +13,10 @@
 import io.jooby.ServiceKey;
 import io.jooby.ServiceRegistry;
 
-class KafkaHelper {
+final class KafkaHelper {
+
+  private KafkaHelper() {
+  }
 
   public static void install(Jooby application, String key,
       Function<Properties, AutoCloseable> factory) {