Up to jar.

.gitignore

@@ -4,6 +4,10 @@
 # Ignore Gradle build output directory
 build
 
+# Ignore SBT output directories
+**/target
+**/.bsp
+
 # Eclipse
 bin
 .classpath

.gitlab-ci.yml

@@ -0,0 +1,78 @@
+stages:
+  - build
+  - test
+  - publish
+  - deploy
+
+.any-job:
+  rules:
+    - if: $CI_SERVER_HOST == "gitlab.mnl.de"
+
+.gradle-job:
+  extends: .any-job
+  image: registry.mnl.de/org/jgrapes/jdk21-builder:v2
+  cache:
+    - key: dependencies-${CI_COMMIT_BRANCH}
+      policy: pull-push  
+      paths:
+        - .gradle
+        - node_modules
+    - key: "$CI_COMMIT_SHA"
+      policy: pull-push
+      paths:
+        - build
+        - "*/build"
+  before_script:
+    - echo -n $CI_REGISTRY_PASSWORD | podman login -u "$CI_REGISTRY_USER" --password-stdin $CI_REGISTRY
+    - git switch $(git branch -r --sort="authordate" --contains $CI_COMMIT_SHA | head -1 | sed -e 's#[^/]*/##')
+    - git pull
+    - git reset --hard $CI_COMMIT_SHA
+  
+build-jars:
+  stage: build
+  extends: .gradle-job  
+  script:
+    - ./gradlew -Pdocker.registry=$CI_REGISTRY_IMAGE build apidocs
+
+publish-images:
+  stage: publish
+  extends: .gradle-job  
+  dependencies:
+    - build-jars
+  script:
+    - ./gradlew -Pdocker.registry=$CI_REGISTRY_IMAGE publishImage
+
+.pages-job:
+  extends: .any-job
+  image: ${CI_DEPENDENCY_PROXY_GROUP_IMAGE_PREFIX}/ruby:3.2
+  variables:
+    JEKYLL_ENV: production
+    LC_ALL: C.UTF-8
+  before_script:
+    - git fetch origin gh-pages
+    - git checkout gh-pages
+    - gem install bundler
+    - bundle install
+
+test-pages:
+  stage: test
+  extends: .pages-job
+  rules:
+    - if: $CI_COMMIT_BRANCH == "gh-pages"
+  script:
+    - bundle exec jekyll build -d test
+  artifacts:
+    paths:
+      - test
+      
+#publish-pages:
+#  stage: publish
+#  extends: .pages-job
+#  rules:
+#    - if: $CI_COMMIT_BRANCH == "gh-pages"
+#  script:
+#    - bundle exec jekyll build -d public
+#  artifacts:
+#    paths:
+#      - public
+#  environment: production

.woodpecker/build.yaml

@@ -1,38 +0,0 @@
-when:
-- event: push
-  evaluate: 'CI_SYSTEM_HOST == "woodpecker.mnl.de"'
-
-clone:
-- name: git
-  image: woodpeckerci/plugin-git
-  settings:
-    partial: false
-    tags: true
-    depth: 0
-
-steps:
-- name: prepare
-  image: alpine
-  commands:
-    # Because we run the next step as user 1000 to make podman work:
-    - mkdir /woodpecker/workflow
-    - chown 1000:1000 /woodpecker/workflow
-    - chown -R 1000:1000 $CI_WORKSPACE
-
-- name: build-jars
-  image: registry.mnl.de/mnl/jdk21-builder:v4
-  environment:
-    HOME: /woodpecker/workflow
-    REGISTRY: registry.mnl.de
-    REGISTRY_USER: mnl
-    REGISTRY_TOKEN:
-      from_secret: REGISTRY_TOKEN
-  commands:
-    - echo $REGISTRY_TOKEN | podman login -u $REGISTRY_USER --password-stdin $REGISTRY
-    - ./gradlew -Pdocker.registry=$REGISTRY/$REGISTRY_USER build apidocs publishImage
-  backend_options:
-    kubernetes:
-      securityContext:
-        privileged: true
-        runAsUser: 1000
-        runAsGroup: 1000

build.sbt

@@ -0,0 +1,25 @@
+lazy val commonSettings = Seq(
+    // Sensible layout
+    Compile / javaSource := baseDirectory.value / "src",
+    Compile / resourceDirectory := baseDirectory.value / "resources",
+    Test / javaSource := baseDirectory.value / "test",
+    Test / resourceDirectory := baseDirectory.value / "test-resources",
+    
+    // Do not append Scala versions to the generated artifacts
+    crossPaths := false,
+    // This forbids including Scala related libraries into the dependency
+    autoScalaLibrary := false,
+    
+    Compile / packageDoc / publishArtifact := false
+)
+
+lazy val util = (project in file("org.jdrupes.vmoperator.util"))
+    .settings(commonSettings: _*)
+
+lazy val common = (project in file("org.jdrupes.vmoperator.common"))
+    .settings(commonSettings: _*)
+    .dependsOn(util)
+
+lazy val runnerQemu = (project in file("org.jdrupes.vmoperator.runner.qemu"))
+    .settings(commonSettings: _*)
+    .dependsOn(common)

dev-example/vmop-agent/gdm/PostLogin/Default

@@ -1,3 +0,0 @@
-#!/bin/sh
-
-sed -i '/AutomaticLogin/d' /etc/gdm/custom.conf

dev-example/vmop-agent/vmop-agent

@@ -72,8 +72,8 @@ doLogin() {
     return
   fi
   
-  # Check if this user is already logged in on tty2
+  # Check if this user is already logged in on tty1
-  curUser=$(loginctl -j | jq -r '.[] | select(.tty=="tty2") | .user')
+  curUser=$(loginctl -j | jq -r '.[] | select(.tty=="tty1") | .user')
   if [ "$curUser" = "$user" ]; then
     echo >&${con} "201 User already logged in"
     return
@@ -97,13 +97,16 @@ doLogin() {
     fi
   fi
   
-  # Configure user as auto login user
+  # Start the desktop for the user
-  sed -i '/AutomaticLogin/d' /etc/gdm/custom.conf
+  systemd-run 2>$temperr \
-  sed -i '/\[daemon\]/a AutomaticLoginEnable=true\nAutomaticLogin='$user \
+    --unit vmop-user-desktop --uid=$uid --gid=$uid \
-    /etc/gdm/custom.conf
+    --working-directory="/home/$user" -p TTYPath=/dev/tty1 \
-
+    -p PAMName=login -p StandardInput=tty -p StandardOutput=journal \
-  # Activate user    
+    -p Conflicts="gdm.service getty@tty1.service" \
-  systemctl restart gdm
+    -E XDG_RUNTIME_DIR="/run/user/$uid" \
+    -E XDG_CURRENT_DESKTOP=GNOME \
+    -p ExecStartPre="/usr/bin/chvt 1" \
+    dbus-run-session -- gnome-shell --display-server --wayland
   if [ $? -eq 0 ]; then
     echo >&${con} "201 User logged in successfully"
   else
@@ -114,8 +117,14 @@ doLogin() {
 # Attempt to log out a user currently using tty1. This is an intermediate
 # operation that can be invoked from other operations
 attemptLogout() {
-  sed -i '/AutomaticLogin/d' /etc/gdm/custom.conf
+  systemctl status vmop-user-desktop > /dev/null 2>&1
-  systemctl stop gdm
+  if [ $? = 0 ]; then
+    systemctl stop vmop-user-desktop
+  fi
+  loginctl -j | jq -r '.[] | select(.tty=="tty1") | .session' \
+  | while read sid; do
+    loginctl kill-session $sid
+  done
   echo >&${con} "102 Desktop stopped"
 }
 
@@ -124,7 +133,15 @@ attemptLogout() {
 # Also try to restart gdm, if it is not running.
 doLogout() {
   attemptLogout
-  systemctl restart gdm
+  systemctl status gdm >/dev/null 2>&1
+  if [ $? != 0 ]; then
+    systemctl restart gdm 2>$temperr
+    if [ $? -eq 0 ]; then
+      echo >&${con} "102 gdm restarted"
+    else
+      echo >&${con} "102 Restarting gdm failed: $(tr '\n' ' ' <${temperr})"
+    fi
+  fi
   echo >&${con} "202 User logged out"
 }
 
@@ -136,7 +153,7 @@ while read line <&${con}; do
 done
 
 onExit() {
-  doLogout
+  attemptLogout
   if [ -n "$temperr" ]; then
     rm -f $temperr
   fi

org.jdrupes.vmoperator.common/build.sbt

@@ -0,0 +1,7 @@
+
+libraryDependencies ++= Seq(
+    "org.jgrapes" % "org.jgrapes.core" % "[1.22.1,2)",
+    "io.kubernetes" % "client-java" % "[19.0.0,20.0.0)",
+    "org.yaml" % "snakeyaml" % "[2.4,2.5)",
+    "com.fasterxml.jackson.datatype" % "jackson-datatype-jsr310" % "[2.16.1,3]"
+)

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/Convertions.java

@@ -32,11 +32,13 @@ import java.util.regex.Pattern;
 public class Convertions {
 
     @SuppressWarnings({ "PMD.UseConcurrentHashMap",
-        "PMD.FieldNamingConventions" })
+        "PMD.FieldNamingConventions", "PMD.VariableNamingConventions" })
     private static final Map<String, BigInteger> unitMap = new HashMap<>();
-    @SuppressWarnings({ "PMD.FieldNamingConventions" })
+    @SuppressWarnings({ "PMD.FieldNamingConventions",
+        "PMD.VariableNamingConventions" })
     private static final List<Map.Entry<String, BigInteger>> unitMappings;
-    @SuppressWarnings({ "PMD.FieldNamingConventions" })
+    @SuppressWarnings({ "PMD.FieldNamingConventions",
+        "PMD.VariableNamingConventions" })
     private static final Pattern memorySize
         = Pattern.compile("^\\s*(\\d+(\\.\\d+)?)\\s*([A-Za-z]*)\\s*");
 
@@ -67,6 +69,7 @@ public class Convertions {
      * @param amount the amount
      * @return the big integer
      */
+    @SuppressWarnings("PMD.DataflowAnomalyAnalysis")
     public static BigInteger parseMemory(Object amount) {
         if (amount == null) {
             return (BigInteger) amount;

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/K8s.java

@@ -47,7 +47,8 @@ import org.yaml.snakeyaml.constructor.SafeConstructor;
 /**
  * Helpers for K8s API.
  */
-@SuppressWarnings({ "PMD.ShortClassName", "PMD.UseUtilityClass" })
+@SuppressWarnings({ "PMD.ShortClassName", "PMD.UseUtilityClass",
+    "PMD.DataflowAnomalyAnalysis" })
 public class K8s {
 
     /**
@@ -112,6 +113,7 @@ public class K8s {
     public static JsonObject yamlToJson(ApiClient client, Reader yaml) {
         // Avoid Yaml.load due to
         // https://github.com/kubernetes-client/java/issues/2741
+        @SuppressWarnings("PMD.UseConcurrentHashMap")
         Map<String, Object> yamlData
             = new Yaml(new SafeConstructor(new LoaderOptions())).load(yaml);
 

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/K8sClient.java

@@ -48,7 +48,8 @@ import okhttp3.Response;
  * A client with some additional properties.
  */
 @SuppressWarnings({ "PMD.ExcessivePublicCount", "PMD.TooManyMethods",
-    "checkstyle:LineLength", "PMD.CouplingBetweenObjects", "PMD.GodClass" })
+    "PMD.LinguisticNaming", "checkstyle:LineLength",
+    "PMD.CouplingBetweenObjects", "PMD.GodClass" })
 public class K8sClient extends ApiClient {
 
     private ApiClient apiClient;
@@ -230,6 +231,7 @@ public class K8sClient extends ApiClient {
      * @return the api client
      * @see ApiClient#setKeyManagers(javax.net.ssl.KeyManager[])
      */
+    @SuppressWarnings("PMD.UseVarargs")
     @Override
     public ApiClient setKeyManagers(KeyManager[] managers) {
         return apiClient().setKeyManagers(managers);
@@ -636,6 +638,7 @@ public class K8sClient extends ApiClient {
      * @return the string
      * @see ApiClient#selectHeaderAccept(java.lang.String[])
      */
+    @SuppressWarnings("PMD.UseVarargs")
     @Override
     public String selectHeaderAccept(String[] accepts) {
         return apiClient().selectHeaderAccept(accepts);
@@ -648,6 +651,7 @@ public class K8sClient extends ApiClient {
      * @return the string
      * @see ApiClient#selectHeaderContentType(java.lang.String[])
      */
+    @SuppressWarnings("PMD.UseVarargs")
     @Override
     public String selectHeaderContentType(String[] contentTypes) {
         return apiClient().selectHeaderContentType(contentTypes);
@@ -814,7 +818,7 @@ public class K8sClient extends ApiClient {
      * @throws ApiException the api exception
      * @see ApiClient#buildCall(java.lang.String, java.lang.String, java.util.List, java.util.List, java.lang.Object, java.util.Map, java.util.Map, java.util.Map, java.lang.String[], io.kubernetes.client.openapi.ApiCallback)
      */
-    @SuppressWarnings({ "rawtypes" })
+    @SuppressWarnings({ "rawtypes", "PMD.ExcessiveParameterList" })
     @Override
     public Call buildCall(String path, String method, List<Pair> queryParams,
             List<Pair> collectionQueryParams, Object body,
@@ -843,7 +847,7 @@ public class K8sClient extends ApiClient {
      * @throws ApiException the api exception
      * @see ApiClient#buildRequest(java.lang.String, java.lang.String, java.util.List, java.util.List, java.lang.Object, java.util.Map, java.util.Map, java.util.Map, java.lang.String[], io.kubernetes.client.openapi.ApiCallback)
      */
-    @SuppressWarnings({ "rawtypes" })
+    @SuppressWarnings({ "rawtypes", "PMD.ExcessiveParameterList" })
     @Override
     public Request buildRequest(String path, String method,
             List<Pair> queryParams, List<Pair> collectionQueryParams,

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/K8sClusterGenericStub.java

@@ -45,7 +45,8 @@ import java.util.function.Function;
  * @param <O> the generic type
  * @param <L> the generic type
  */
-@SuppressWarnings({ "PMD.CouplingBetweenObjects" })
+@SuppressWarnings({ "PMD.DataflowAnomalyAnalysis",
+    "PMD.CouplingBetweenObjects" })
 public class K8sClusterGenericStub<O extends KubernetesObject,
         L extends KubernetesListObject> {
     protected final K8sClient client;
@@ -254,6 +255,7 @@ public class K8sClusterGenericStub<O extends KubernetesObject,
          * @param name the name
          * @return the result
          */
+        @SuppressWarnings("PMD.UseObjectForClearerAPI")
         R get(Class<O> objectClass, Class<L> objectListClass, K8sClient client,
                 APIResource context, String name);
     }
@@ -282,6 +284,7 @@ public class K8sClusterGenericStub<O extends KubernetesObject,
      * @return the stub if the object exists
      * @throws ApiException the api exception
      */
+    @SuppressWarnings({ "PMD.AvoidBranchingStatementAsLastInLoop" })
     public static <O extends KubernetesObject, L extends KubernetesListObject,
             R extends K8sClusterGenericStub<O, L>>
             R get(Class<O> objectClass, Class<L> objectListClass,
@@ -312,6 +315,8 @@ public class K8sClusterGenericStub<O extends KubernetesObject,
      * @return the stub if the object exists
      * @throws ApiException the api exception
      */
+    @SuppressWarnings({ "PMD.AvoidBranchingStatementAsLastInLoop",
+        "PMD.UseObjectForClearerAPI" })
     public static <O extends KubernetesObject, L extends KubernetesListObject,
             R extends K8sClusterGenericStub<O, L>>
             R get(Class<O> objectClass, Class<L> objectListClass,
@@ -336,6 +341,8 @@ public class K8sClusterGenericStub<O extends KubernetesObject,
      * @return the stub if the object exists
      * @throws ApiException the api exception
      */
+    @SuppressWarnings({ "PMD.AvoidBranchingStatementAsLastInLoop",
+        "PMD.AvoidInstantiatingObjectsInLoops", "PMD.UseObjectForClearerAPI" })
     public static <O extends KubernetesObject, L extends KubernetesListObject,
             R extends K8sClusterGenericStub<O, L>>
             R create(Class<O> objectClass, Class<L> objectListClass,

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/K8sDynamicModel.java

@@ -29,6 +29,7 @@ import io.kubernetes.client.openapi.models.V1ObjectMeta;
  * notably the metadata, is made available through the methods
  * defined by {@link KubernetesObject}.
  */
+@SuppressWarnings("PMD.DataClass")
 public class K8sDynamicModel implements KubernetesObject {
 
     private final V1ObjectMeta metadata;

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/K8sDynamicModelsBase.java

@@ -62,7 +62,7 @@ public class K8sDynamicModelsBase<T extends K8sDynamicModel>
             } catch (InstantiationException | IllegalAccessException
                     | IllegalArgumentException | InvocationTargetException
                     | NoSuchMethodException | SecurityException exc) {
-                throw new IllegalArgumentException(exc);
+                throw new IllegalArgumentException(exc); // NOPMD
             }
         }
     }

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/K8sDynamicStub.java

@@ -31,6 +31,7 @@ import java.util.Collection;
  * state and can therefore be used for any kind of object, especially
  * custom objects.
  */
+@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 public class K8sDynamicStub
         extends K8sDynamicStubBase<K8sDynamicModel, K8sDynamicModels> {
 
@@ -63,6 +64,8 @@ public class K8sDynamicStub
      * @return the stub if the object exists
      * @throws ApiException the api exception
      */
+    @SuppressWarnings({ "PMD.AvoidBranchingStatementAsLastInLoop",
+        "PMD.AvoidInstantiatingObjectsInLoops", "PMD.UseObjectForClearerAPI" })
     public static K8sDynamicStub get(K8sClient client,
             GroupVersionKind gvk, String namespace, String name)
             throws ApiException {
@@ -80,6 +83,8 @@ public class K8sDynamicStub
      * @return the stub if the object exists
      * @throws ApiException the api exception
      */
+    @SuppressWarnings({ "PMD.AvoidBranchingStatementAsLastInLoop",
+        "PMD.AvoidInstantiatingObjectsInLoops", "PMD.UseObjectForClearerAPI" })
     public static K8sDynamicStub get(K8sClient client,
             APIResource context, String namespace, String name) {
         return new K8sDynamicStub(client, context, namespace, name);

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/K8sDynamicStubBase.java

@@ -26,6 +26,7 @@ import io.kubernetes.client.Discovery.APIResource;
  * state and can therefore be used for any kind of object, especially
  * custom objects.
  */
+@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 public abstract class K8sDynamicStubBase<O extends K8sDynamicModel,
         L extends K8sDynamicModelsBase<O>> extends K8sGenericStub<O, L> {
 
@@ -39,6 +40,7 @@ public abstract class K8sDynamicStubBase<O extends K8sDynamicModel,
      * @param namespace the namespace
      * @param name the name
      */
+    @SuppressWarnings("PMD.ConstructorCallsOverridableMethod")
     public K8sDynamicStubBase(Class<O> objectClass,
             Class<L> objectListClass, DynamicTypeAdapterFactory<O, L> taf,
             K8sClient client, APIResource context, String namespace,

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/K8sGenericStub.java

@@ -48,7 +48,7 @@ import java.util.function.Function;
  * @param <O> the generic type
  * @param <L> the generic type
  */
-@SuppressWarnings({ "PMD.TooManyMethods" })
+@SuppressWarnings({ "PMD.DataflowAnomalyAnalysis", "PMD.TooManyMethods" })
 public class K8sGenericStub<O extends KubernetesObject,
         L extends KubernetesListObject> {
     protected final K8sClient client;
@@ -200,6 +200,7 @@ public class K8sGenericStub<O extends KubernetesObject,
      * @return the updated model or empty if the object was not found
      * @throws ApiException the api exception
      */
+    @SuppressWarnings("PMD.AssignmentInOperand")
     public Optional<O> updateStatus(O object, Function<O, Object> updater)
             throws ApiException {
         return K8s.optional(api.updateStatus(object, updater));
@@ -217,7 +218,7 @@ public class K8sGenericStub<O extends KubernetesObject,
      * @return the updated model or empty if the object was not found
      * @throws ApiException the api exception
      */
-    @SuppressWarnings({ "PMD.AssignmentInOperand" })
+    @SuppressWarnings({ "PMD.AssignmentInOperand", "PMD.UnusedAssignment" })
     public Optional<O> updateStatus(Function<O, Object> updater, O current,
             int retries) throws ApiException {
         while (true) {
@@ -247,6 +248,7 @@ public class K8sGenericStub<O extends KubernetesObject,
      * @return the updated model or empty if the object was not found
      * @throws ApiException the api exception
      */
+    @SuppressWarnings({ "PMD.AssignmentInOperand", "PMD.UnusedAssignment" })
     public Optional<O> updateStatus(Function<O, Object> updater, int retries)
             throws ApiException {
         return updateStatus(updater, null, retries);
@@ -369,6 +371,7 @@ public class K8sGenericStub<O extends KubernetesObject,
          * @param name the name
          * @return the result
          */
+        @SuppressWarnings("PMD.UseObjectForClearerAPI")
         R get(K8sClient client, String namespace, String name);
     }
 
@@ -394,6 +397,8 @@ public class K8sGenericStub<O extends KubernetesObject,
      * @return the stub if the object exists
      * @throws ApiException the api exception
      */
+    @SuppressWarnings({ "PMD.AvoidBranchingStatementAsLastInLoop",
+        "PMD.AvoidInstantiatingObjectsInLoops", "PMD.UseObjectForClearerAPI" })
     public static <O extends KubernetesObject, L extends KubernetesListObject,
             R extends K8sGenericStub<O, L>>
             R create(Class<O> objectClass, Class<L> objectListClass,

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/K8sObserver.java

@@ -50,6 +50,7 @@ public class K8sObserver<O extends KubernetesObject,
         ADDED, MODIFIED, DELETED
     }
 
+    @SuppressWarnings("PMD.FieldNamingConventions")
     protected final Logger logger = Logger.getLogger(getClass().getName());
 
     protected final K8sClient client;
@@ -72,7 +73,8 @@ public class K8sObserver<O extends KubernetesObject,
      * @param namespace the namespace
      * @param options the options
      */
-    @SuppressWarnings({ "PMD.AvoidCatchingThrowable",
+    @SuppressWarnings({ "PMD.AvoidBranchingStatementAsLastInLoop",
+        "PMD.UseObjectForClearerAPI", "PMD.AvoidCatchingThrowable",
         "PMD.CognitiveComplexity", "PMD.AvoidCatchingGenericException" })
     public K8sObserver(Class<O> objectClass, Class<L> objectListClass,
             K8sClient client, APIResource context, String namespace,
@@ -98,6 +100,7 @@ public class K8sObserver<O extends KubernetesObject,
                     while (!Thread.currentThread().isInterrupted()) {
                         Instant startedAt = Instant.now();
                         try {
+                            @SuppressWarnings("PMD.AvoidInstantiatingObjectsInLoops")
                             var changed
                                 = api.watch(namespace, options).iterator();
                             while (changed.hasNext()) {
@@ -230,6 +233,7 @@ public class K8sObserver<O extends KubernetesObject,
     }
 
     @Override
+    @SuppressWarnings("PMD.UseLocaleWithCaseConversions")
     public String toString() {
         return "Observer for " + K8s.toString(context) + " " + namespace;
     }

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/K8sV1ConfigMapStub.java

@@ -26,6 +26,7 @@ import java.util.List;
 /**
  * A stub for config maps (v1).
  */
+@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 public class K8sV1ConfigMapStub
         extends K8sGenericStub<V1ConfigMap, V1ConfigMapList> {
 

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/K8sV1DeploymentStub.java

@@ -29,6 +29,7 @@ import java.util.Optional;
 /**
  * A stub for pods (v1).
  */
+@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 public class K8sV1DeploymentStub
         extends K8sGenericStub<V1Deployment, V1DeploymentList> {
 

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/K8sV1NodeStub.java

@@ -29,6 +29,7 @@ import java.util.List;
 /**
  * A stub for nodes (v1).
  */
+@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 public class K8sV1NodeStub extends K8sClusterGenericStub<V1Node, V1NodeList> {
 
     public static final APIResource CONTEXT = new APIResource("", List.of("v1"),
@@ -73,7 +74,8 @@ public class K8sV1NodeStub extends K8sClusterGenericStub<V1Node, V1NodeList> {
     /**
      * Provide {@link GenericSupplier}.
      */
-    @SuppressWarnings({ "PMD.UnusedFormalParameter" })
+    @SuppressWarnings({ "PMD.UnusedFormalParameter",
+        "PMD.UnusedPrivateMethod" })
     private static K8sV1NodeStub getGeneric(Class<V1Node> objectClass,
             Class<V1NodeList> objectListClass, K8sClient client,
             APIResource context, String name) {

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/K8sV1PodStub.java

@@ -29,6 +29,7 @@ import java.util.List;
 /**
  * A stub for pods (v1).
  */
+@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 public class K8sV1PodStub extends K8sGenericStub<V1Pod, V1PodList> {
 
     /** The pods' context. */

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/K8sV1PvcStub.java

@@ -29,6 +29,7 @@ import java.util.List;
 /**
  * A stub for pods (v1).
  */
+@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 public class K8sV1PvcStub extends
         K8sGenericStub<V1PersistentVolumeClaim, V1PersistentVolumeClaimList> {
 

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/K8sV1SecretStub.java

@@ -29,6 +29,7 @@ import java.util.List;
 /**
  * A stub for secrets (v1).
  */
+@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 public class K8sV1SecretStub extends K8sGenericStub<V1Secret, V1SecretList> {
 
     public static final APIResource CONTEXT = new APIResource("", List.of("v1"),

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/K8sV1ServiceStub.java

@@ -29,6 +29,7 @@ import java.util.List;
 /**
  * A stub for secrets (v1).
  */
+@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 public class K8sV1ServiceStub extends K8sGenericStub<V1Service, V1ServiceList> {
 
     public static final APIResource CONTEXT = new APIResource("", List.of("v1"),

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/K8sV1StatefulSetStub.java

@@ -26,6 +26,7 @@ import java.util.List;
 /**
  * A stub for stateful sets (v1).
  */
+@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 public class K8sV1StatefulSetStub
         extends K8sGenericStub<V1StatefulSet, V1StatefulSetList> {
 

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/VmDefinition.java

@@ -46,10 +46,11 @@ import org.jdrupes.vmoperator.util.DataPath;
 /**
  * Represents a VM definition.
  */
-@SuppressWarnings({ "PMD.DataClass", "PMD.TooManyMethods" })
+@SuppressWarnings({ "PMD.DataClass", "PMD.TooManyMethods",
+    "PMD.CouplingBetweenObjects" })
 public class VmDefinition extends K8sDynamicModel {
 
-    @SuppressWarnings({ "unused" })
+    @SuppressWarnings({ "PMD.FieldNamingConventions", "unused" })
     private static final Logger logger
         = Logger.getLogger(VmDefinition.class.getName());
     @SuppressWarnings("PMD.FieldNamingConventions")

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/VmDefinitionStub.java

@@ -31,6 +31,7 @@ import java.util.Collection;
  * state and can therefore be used for any kind of object, especially
  * custom objects.
  */
+@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 public class VmDefinitionStub
         extends K8sDynamicStubBase<VmDefinition, VmDefinitions> {
 
@@ -63,6 +64,8 @@ public class VmDefinitionStub
      * @return the stub if the object exists
      * @throws ApiException the api exception
      */
+    @SuppressWarnings({ "PMD.AvoidBranchingStatementAsLastInLoop",
+        "PMD.AvoidInstantiatingObjectsInLoops", "PMD.UseObjectForClearerAPI" })
     public static VmDefinitionStub get(K8sClient client,
             GroupVersionKind gvk, String namespace, String name)
             throws ApiException {
@@ -80,6 +83,8 @@ public class VmDefinitionStub
      * @return the stub if the object exists
      * @throws ApiException the api exception
      */
+    @SuppressWarnings({ "PMD.AvoidBranchingStatementAsLastInLoop",
+        "PMD.AvoidInstantiatingObjectsInLoops", "PMD.UseObjectForClearerAPI" })
     public static VmDefinitionStub get(K8sClient client,
             APIResource context, String namespace, String name) {
         return new VmDefinitionStub(client, context, namespace, name);

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/VmExtraData.java

@@ -34,6 +34,7 @@ import java.util.logging.Logger;
  */
 public class VmExtraData {
 
+    @SuppressWarnings("PMD.FieldNamingConventions")
     private static final Logger logger
         = Logger.getLogger(VmExtraData.class.getName());
 

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/VmPool.java

@@ -35,6 +35,7 @@ import org.jdrupes.vmoperator.util.DataPath;
 /**
  * Represents a VM pool.
  */
+@SuppressWarnings({ "PMD.DataClass" })
 public class VmPool {
 
     private final String name;

org.jdrupes.vmoperator.manager.events/src/org/jdrupes/vmoperator/manager/events/AssignVm.java

@@ -24,6 +24,7 @@ import org.jgrapes.core.Event;
 /**
  * Assign a VM from a pool to a user.
  */
+@SuppressWarnings("PMD.DataClass")
 public class AssignVm extends Event<VmData> {
 
     private final String fromPool;

org.jdrupes.vmoperator.manager.events/src/org/jdrupes/vmoperator/manager/events/ChannelDictionary.java

@@ -43,6 +43,7 @@ public interface ChannelDictionary<K, C extends Channel, A> {
      * @param channel the channel
      * @param associated the associated
      */
+    @SuppressWarnings("PMD.ShortClassName")
     public record Value<C extends Channel, A>(C channel, A associated) {
     }
 

org.jdrupes.vmoperator.manager.events/src/org/jdrupes/vmoperator/manager/events/ChannelManager.java

@@ -149,6 +149,8 @@ public class ChannelManager<K, C extends Channel, A>
      * @param supplier the supplier
      * @return the channel
      */
+    @SuppressWarnings({ "PMD.AssignmentInOperand",
+        "PMD.DataflowAnomalyAnalysis" })
     public C computeIfAbsent(K key, Function<K, C> supplier) {
         return entries.computeIfAbsent(key,
             k -> new Value<>(supplier.apply(k), null)).channel();

org.jdrupes.vmoperator.manager.events/src/org/jdrupes/vmoperator/manager/events/GetDisplaySecret.java

@@ -24,6 +24,7 @@ import org.jgrapes.core.Event;
 /**
  * Gets the current display secret and optionally updates it.
  */
+@SuppressWarnings("PMD.DataClass")
 public class GetDisplaySecret extends Event<String> {
 
     private final VmDefinition vmDef;

org.jdrupes.vmoperator.manager.events/src/org/jdrupes/vmoperator/manager/events/GetPools.java

@@ -27,6 +27,7 @@ import org.jgrapes.core.Event;
 /**
  * Gets the known pools' definitions.
  */
+@SuppressWarnings("PMD.DataClass")
 public class GetPools extends Event<List<VmPool>> {
 
     private String name;

org.jdrupes.vmoperator.manager.events/src/org/jdrupes/vmoperator/manager/events/GetVms.java

@@ -27,6 +27,7 @@ import org.jgrapes.core.Event;
 /**
  * Gets the known VMs' definitions and channels.
  */
+@SuppressWarnings("PMD.DataClass")
 public class GetVms extends Event<List<GetVms.VmData>> {
 
     private String name;

org.jdrupes.vmoperator.manager.events/src/org/jdrupes/vmoperator/manager/events/ModifyVm.java

@@ -24,6 +24,7 @@ import org.jgrapes.core.Event;
 /**
  * Modifies a VM.
  */
+@SuppressWarnings("PMD.DataClass")
 public class ModifyVm extends Event<Void> {
 
     private final String name;

org.jdrupes.vmoperator.manager.events/src/org/jdrupes/vmoperator/manager/events/ResetVm.java

@@ -23,6 +23,7 @@ import org.jgrapes.core.Event;
 /**
  * Triggers a reset of the VM.
  */
+@SuppressWarnings("PMD.DataClass")
 public class ResetVm extends Event<String> {
 
     private final String vmName;

org.jdrupes.vmoperator.manager.events/src/org/jdrupes/vmoperator/manager/events/UpdateAssignment.java

@@ -24,6 +24,7 @@ import org.jgrapes.core.Event;
 /**
  * Note the assignment to a user in the VM status.
  */
+@SuppressWarnings("PMD.DataClass")
 public class UpdateAssignment extends Event<Boolean> {
 
     private final VmPool fromPool;

org.jdrupes.vmoperator.manager.events/src/org/jdrupes/vmoperator/manager/events/VmChannel.java

@@ -28,6 +28,7 @@ import org.jgrapes.core.Subchannel.DefaultSubchannel;
 /**
  * A subchannel used to send the events related to a specific VM.
  */
+@SuppressWarnings("PMD.DataClass")
 public class VmChannel extends DefaultSubchannel {
 
     private final EventPipeline pipeline;
@@ -55,6 +56,7 @@ public class VmChannel extends DefaultSubchannel {
      * @param definition the definition
      * @return the watch channel
      */
+    @SuppressWarnings("PMD.LinguisticNaming")
     public VmChannel setVmDefinition(VmDefinition definition) {
         this.definition = definition;
         return this;
@@ -85,6 +87,7 @@ public class VmChannel extends DefaultSubchannel {
      * @param generation the generation to set
      * @return true if value has changed
      */
+    @SuppressWarnings("PMD.LinguisticNaming")
     public boolean setGeneration(long generation) {
         if (this.generation == generation) {
             return false;

org.jdrupes.vmoperator.manager.events/src/org/jdrupes/vmoperator/manager/events/VmPoolChanged.java

@@ -26,6 +26,7 @@ import org.jgrapes.core.Event;
 /**
  * Indicates a change in a pool configuration. 
  */
+@SuppressWarnings("PMD.DataClass")
 public class VmPoolChanged extends Event<Void> {
 
     private final VmPool vmPool;

org.jdrupes.vmoperator.manager/resources/org/jdrupes/vmoperator/manager/runnerConfig.ftl.yaml

@@ -37,7 +37,7 @@ data:
       # The template to use. Resolved relative to /usr/share/vmrunner/templates.
       # template: "Standard-VM-latest.ftl.yaml"
       <#if spec.runnerTemplate?? && spec.runnerTemplate.source?? >
-      template: ${ spec.runnerTemplate.source }
+      template: ${ cm.spec().runnerTemplate.source }
       </#if>
     
       # The template is copied to the data diretory when the VM starts for

org.jdrupes.vmoperator.manager/src/org/jdrupes/vmoperator/manager/AbstractMonitor.java

@@ -51,6 +51,7 @@ import org.jgrapes.util.events.ConfigurationUpdate;
  * @param <O> the object type for the context
  * @param <L> the object list type for the context
  */
+@SuppressWarnings({ "PMD.DataflowAnomalyAnalysis" })
 public abstract class AbstractMonitor<O extends KubernetesObject,
         L extends KubernetesListObject, C extends Channel> extends Component {
 
@@ -180,6 +181,7 @@ public abstract class AbstractMonitor<O extends KubernetesObject,
      * @param event the event
      */
     @Handler(priority = 10)
+    @SuppressWarnings("PMD.AvoidInstantiatingObjectsInLoops")
     public void onStart(Start event) {
         try {
             // Get namespace

org.jdrupes.vmoperator.manager/src/org/jdrupes/vmoperator/manager/ConfigMapReconciler.java

@@ -56,6 +56,7 @@ import org.yaml.snakeyaml.constructor.SafeConstructor;
 /**
  * Delegee for reconciling the config map
  */
+@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 /* default */ class ConfigMapReconciler {
 
     protected final Logger logger = Logger.getLogger(getClass().getName());
@@ -80,6 +81,7 @@ import org.yaml.snakeyaml.constructor.SafeConstructor;
      * @throws TemplateException the template exception
      * @throws ApiException the API exception
      */
+    @SuppressWarnings("PMD.AvoidDuplicateLiterals")
     public void reconcile(Map<String, Object> model, VmChannel channel,
             boolean modelChanged)
             throws IOException, TemplateException, ApiException {
@@ -187,6 +189,7 @@ import org.yaml.snakeyaml.constructor.SafeConstructor;
     private final TemplateMethodModelEx adjustCloudInitMetaModel
         = new TemplateMethodModelEx() {
             @Override
+            @SuppressWarnings("PMD.PreserveStackTrace")
             public Object exec(@SuppressWarnings("rawtypes") List arguments)
                     throws TemplateModelException {
                 @SuppressWarnings("unchecked")

org.jdrupes.vmoperator.manager/src/org/jdrupes/vmoperator/manager/Constants.java

@@ -21,6 +21,7 @@ package org.jdrupes.vmoperator.manager;
 /**
  * Some constants.
  */
+@SuppressWarnings("PMD.DataClass")
 public class Constants extends org.jdrupes.vmoperator.common.Constants {
 
     /** The Constant STATE_RUNNING. */

org.jdrupes.vmoperator.manager/src/org/jdrupes/vmoperator/manager/DisplaySecretMonitor.java

@@ -42,6 +42,7 @@ import org.jgrapes.core.Channel;
  * of the pod running the VM in response to force an update of the files 
  * in the pod that reflect the information from the secret.
  */
+@SuppressWarnings({ "PMD.DataflowAnomalyAnalysis", "PMD.TooManyStaticImports" })
 public class DisplaySecretMonitor
         extends AbstractMonitor<V1Secret, V1SecretList, VmChannel> {
 

org.jdrupes.vmoperator.manager/src/org/jdrupes/vmoperator/manager/DisplaySecretReconciler.java

@@ -66,6 +66,7 @@ import org.jose4j.base64url.Base64;
  *   * `passwordValidity`: the validity of the random password in seconds.
  *     Used to calculate the password expiry time in the generated secret.
  */
+@SuppressWarnings({ "PMD.DataflowAnomalyAnalysis", "PMD.TooManyStaticImports" })
 public class DisplaySecretReconciler extends Component {
 
     protected final Logger logger = Logger.getLogger(getClass().getName());
@@ -103,15 +104,12 @@ public class DisplaySecretReconciler extends Component {
                 return oldConfig;
             }).ifPresent(c -> {
                 try {
-                    Optional.ofNullable(c.get("passwordValidity"))
+                    if (c.containsKey("passwordValidity")) {
-                        .map(p -> p instanceof Integer ? (Integer) p
+                        passwordValidity = Integer
-                            : Integer.valueOf((String) p))
+                            .parseInt((String) c.get("passwordValidity"));
-                        .ifPresent(p -> {
+                    }
-                            passwordValidity = p;
+                } catch (ClassCastException e) {
-                        });
+                    logger.config("Malformed configuration: " + e.getMessage());
-                } catch (NumberFormatException e) {
-                    logger.warning(
-                        () -> "Malformed configuration: " + e.getMessage());
                 }
             });
     }
@@ -192,6 +190,7 @@ public class DisplaySecretReconciler extends Component {
      * @throws ApiException the api exception
      */
     @Handler
+    @SuppressWarnings("PMD.StringInstantiation")
     public void onGetDisplaySecret(GetDisplaySecret event, VmChannel channel)
             throws ApiException {
         // Get VM definition and check if running
@@ -320,6 +319,7 @@ public class DisplaySecretReconciler extends Component {
     /**
      * The Class PendingGet.
      */
+    @SuppressWarnings("PMD.DataClass")
     private static class PendingRequest {
         public final GetDisplaySecret event;
         public final long expectedSerial;

org.jdrupes.vmoperator.manager/src/org/jdrupes/vmoperator/manager/LoadBalancerReconciler.java

@@ -45,6 +45,7 @@ import org.yaml.snakeyaml.constructor.SafeConstructor;
 /**
  * Delegee for reconciling the service
  */
+@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 /* default */ class LoadBalancerReconciler {
 
     private static final String LOAD_BALANCER_SERVICE = "loadBalancerService";
@@ -85,7 +86,7 @@ import org.yaml.snakeyaml.constructor.SafeConstructor;
         }
 
         // Check if to be generated
-        @SuppressWarnings({ "unchecked" })
+        @SuppressWarnings({ "PMD.AvoidDuplicateLiterals", "unchecked" })
         var lbsDef = Optional.of(model)
             .map(m -> (Map<String, Object>) m.get("reconciler"))
             .map(c -> c.get(LOAD_BALANCER_SERVICE)).orElse(Boolean.FALSE);

org.jdrupes.vmoperator.manager/src/org/jdrupes/vmoperator/manager/Manager.java

@@ -81,7 +81,7 @@ import org.jgrapes.webconsole.vuejs.VueJsConsoleWeblet;
 /**
  * The application class.
  */
-@SuppressWarnings({ "PMD.ExcessiveImports" })
+@SuppressWarnings({ "PMD.DataflowAnomalyAnalysis", "PMD.ExcessiveImports" })
 public class Manager extends Component {
 
     private static String version;
@@ -97,8 +97,8 @@ public class Manager extends Component {
      * @throws IOException Signals that an I/O exception has occurred.
      * @throws URISyntaxException 
      */
-    @SuppressWarnings({ "PMD.NcssCount",
+    @SuppressWarnings({ "PMD.TooFewBranchesForASwitchStatement",
-        "PMD.ConstructorCallsOverridableMethod" })
+        "PMD.NcssCount", "PMD.ConstructorCallsOverridableMethod" })
     public Manager(CommandLine cmdLine) throws IOException, URISyntaxException {
         super(new NamedChannel("manager"));
         // Prepare component tree
@@ -217,6 +217,7 @@ public class Manager extends Component {
      * @param event the event
      */
     @Handler
+    @SuppressWarnings("PMD.DataflowAnomalyAnalysis")
     public void onConfigurationUpdate(ConfigurationUpdate event) {
         event.structured(componentPath()).ifPresent(c -> {
             if (c.containsKey("clusterName")) {
@@ -290,6 +291,7 @@ public class Manager extends Component {
      * @param args the arguments
      * @throws Exception the exception
      */
+    @SuppressWarnings("PMD.SignatureDeclareThrowsException")
     public static void main(String[] args) {
         try {
             // Instance logger is not available yet.

org.jdrupes.vmoperator.manager/src/org/jdrupes/vmoperator/manager/PodReconciler.java

@@ -43,6 +43,7 @@ import org.yaml.snakeyaml.constructor.SafeConstructor;
 /**
  * Delegee for reconciling the pod.
  */
+@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 /* default */ class PodReconciler {
 
     protected final Logger logger = Logger.getLogger(getClass().getName());

org.jdrupes.vmoperator.manager/src/org/jdrupes/vmoperator/manager/PoolMonitor.java

@@ -53,6 +53,7 @@ import org.jgrapes.core.events.Attached;
  * {@link VmPoolChanged} events fired on a special pipeline to
  * avoid concurrent change informations.
  */
+@SuppressWarnings({ "PMD.DataflowAnomalyAnalysis", "PMD.ExcessiveImports" })
 public class PoolMonitor extends
         AbstractMonitor<K8sDynamicModel, K8sDynamicModels, Channel> {
 

org.jdrupes.vmoperator.manager/src/org/jdrupes/vmoperator/manager/PvcReconciler.java

@@ -49,6 +49,7 @@ import org.yaml.snakeyaml.constructor.SafeConstructor;
 /**
  * Delegee for reconciling the stateful set (effectively the pod).
  */
+@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 /* default */ class PvcReconciler {
 
     protected final Logger logger = Logger.getLogger(getClass().getName());
@@ -74,7 +75,7 @@ import org.yaml.snakeyaml.constructor.SafeConstructor;
      * @throws TemplateException the template exception
      * @throws ApiException the api exception
      */
-    @SuppressWarnings({ "unchecked" })
+    @SuppressWarnings({ "PMD.AvoidDuplicateLiterals", "unchecked" })
     public void reconcile(VmDefinition vmDef, Map<String, Object> model,
             VmChannel channel, boolean specChanged)
             throws IOException, TemplateException, ApiException {

org.jdrupes.vmoperator.manager/src/org/jdrupes/vmoperator/manager/Reconciler.java

@@ -137,13 +137,15 @@ import org.jgrapes.util.events.ConfigurationUpdate;
  *   
  * @see org.jdrupes.vmoperator.manager.DisplaySecretReconciler
  */
-@SuppressWarnings({ "PMD.AvoidDuplicateLiterals" })
+@SuppressWarnings({ "PMD.DataflowAnomalyAnalysis",
+    "PMD.AvoidDuplicateLiterals" })
 public class Reconciler extends Component {
 
     /** The Constant mapper. */
     @SuppressWarnings("PMD.FieldNamingConventions")
     protected static final ObjectMapper mapper = new ObjectMapper();
 
+    @SuppressWarnings("PMD.SingularField")
     private final Configuration fmConfig;
     private final ConfigMapReconciler cmReconciler;
     private final DisplaySecretReconciler dsReconciler;
@@ -201,6 +203,7 @@ public class Reconciler extends Component {
      * @throws IOException Signals that an I/O exception has occurred.
      */
     @Handler
+    @SuppressWarnings("PMD.ConfusingTernary")
     public void onVmResourceChanged(VmResourceChanged event, VmChannel channel)
             throws ApiException, TemplateException, IOException {
         // Ownership relationships takes care of deletions
@@ -335,6 +338,7 @@ public class Reconciler extends Component {
     private final TemplateMethodModelEx formatMemoryModel
         = new TemplateMethodModelEx() {
             @Override
+            @SuppressWarnings("PMD.PreserveStackTrace")
             public Object exec(@SuppressWarnings("rawtypes") List arguments)
                     throws TemplateModelException {
                 var arg = arguments.get(0);
@@ -364,7 +368,8 @@ public class Reconciler extends Component {
     private final TemplateMethodModelEx imgageLocationModel
         = new TemplateMethodModelEx() {
             @Override
-            @SuppressWarnings({ "PMD.AvoidLiteralsInIfCondition" })
+            @SuppressWarnings({ "PMD.PreserveStackTrace",
+                "PMD.AvoidLiteralsInIfCondition" })
             public Object exec(@SuppressWarnings("rawtypes") List arguments)
                     throws TemplateModelException {
                 var image = ((SimpleScalar) arguments.get(0)).getAsString();
@@ -389,6 +394,7 @@ public class Reconciler extends Component {
     private final TemplateMethodModelEx toJsonModel
         = new TemplateMethodModelEx() {
             @Override
+            @SuppressWarnings("PMD.PreserveStackTrace")
             public Object exec(@SuppressWarnings("rawtypes") List arguments)
                     throws TemplateModelException {
                 try {

org.jdrupes.vmoperator.manager/src/org/jdrupes/vmoperator/manager/VmMonitor.java

@@ -71,6 +71,7 @@ import org.jgrapes.core.annotation.Handler;
  * event pipeline should be used for all events related to changes of
  * a particular VM.
  */
+@SuppressWarnings({ "PMD.DataflowAnomalyAnalysis", "PMD.ExcessiveImports" })
 public class VmMonitor extends
         AbstractMonitor<VmDefinition, VmDefinitions, VmChannel> {
 
@@ -106,6 +107,7 @@ public class VmMonitor extends
         purge();
     }
 
+    @SuppressWarnings("PMD.CognitiveComplexity")
     private void purge() throws ApiException {
         // Get existing CRs (VMs)
         var known = K8sDynamicStub.list(client(), context(), namespace())
@@ -190,6 +192,7 @@ public class VmMonitor extends
         }
     }
 
+    @SuppressWarnings("PMD.AvoidDuplicateLiterals")
     private void addExtraData(VmDefinition vmDef, VmDefinition prevState) {
         var extra = new VmExtraData(vmDef);
         var prevExtra = Optional.ofNullable(prevState).map(VmDefinition::extra);
@@ -238,6 +241,7 @@ public class VmMonitor extends
             .ofNullable(pod.getSpec().getNodeName()).orElse("");
         logger.finer(() -> "Adding node name " + nodeName
             + " to VM info for " + vmDef.name());
+        @SuppressWarnings("PMD.AvoidInstantiatingObjectsInLoops")
         var addrs = new ArrayList<String>();
         Optional.ofNullable(pod.getStatus().getPodIPs())
             .orElse(Collections.emptyList()).stream()

org.jdrupes.vmoperator.runner.qemu/build.sbt

@@ -0,0 +1,11 @@
+enablePlugins(JavaAppPackaging)
+
+libraryDependencies ++= Seq(
+    "org.jgrapes" % "org.jgrapes.core" % "[1.22.1,2)",
+    "org.jgrapes" % "org.jgrapes.util" % "[1.38.1,2)",
+    "org.jgrapes" % "org.jgrapes.io" % "[2.12.1,3)",
+    "org.jgrapes" % "org.jgrapes.http" % "[3.5.0,4)",
+    "commons-cli" % "commons-cli" % "1.5.0",
+    "com.fasterxml.jackson.dataformat" % "jackson-dataformat-yaml" % "[2.16.1]",
+    "org.slf4j" % "slf4j-jdk14" % "[2.0.7,3)" % Runtime
+)

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/CdMediaController.java

@@ -36,6 +36,7 @@ import org.jgrapes.core.annotation.Handler;
 /**
  * The Class CdMediaController.
  */
+@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 public class CdMediaController extends Component {
 
     /**
@@ -54,6 +55,7 @@ public class CdMediaController extends Component {
      *
      * @param componentChannel the component channel
      */
+    @SuppressWarnings("PMD.AssignmentToNonFinalStatic")
     public CdMediaController(Channel componentChannel) {
         super(componentChannel);
     }
@@ -64,7 +66,8 @@ public class CdMediaController extends Component {
      * @param event the event
      */
     @Handler
-    @SuppressWarnings({ "PMD.AvoidInstantiatingObjectsInLoops" })
+    @SuppressWarnings({ "PMD.AvoidLiteralsInIfCondition",
+        "PMD.AvoidInstantiatingObjectsInLoops" })
     public void onConfigureQemu(ConfigureQemu event) {
         if (event.runState() == RunState.TERMINATING) {
             return;

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/Configuration.java

@@ -39,9 +39,11 @@ import org.jdrupes.vmoperator.util.FsdUtils;
 /**
  * The configuration information from the configuration file.
  */
+@SuppressWarnings({ "PMD.ExcessivePublicCount", "PMD.TooManyFields" })
 public class Configuration implements Dto {
     private static final String CI_INSTANCE_ID = "instance-id";
 
+    @SuppressWarnings("PMD.FieldNamingConventions")
     protected final Logger logger = Logger.getLogger(getClass().getName());
 
     /** Configuration timestamp. */
@@ -93,12 +95,15 @@ public class Configuration implements Dto {
     public static class CloudInit implements Dto {
 
         /** The meta data. */
+        @SuppressWarnings("PMD.UseConcurrentHashMap")
         public Map<String, Object> metaData;
 
         /** The user data. */
+        @SuppressWarnings("PMD.UseConcurrentHashMap")
         public Map<String, Object> userData;
 
         /** The network config. */
+        @SuppressWarnings("PMD.UseConcurrentHashMap")
         public Map<String, Object> networkConfig;
     }
 
@@ -294,6 +299,7 @@ public class Configuration implements Dto {
         return true;
     }
 
+    @SuppressWarnings("PMD.AvoidLiteralsInIfCondition")
     private void checkDrives() {
         for (Drive drive : vm.drives) {
             if (drive.file != null || drive.device != null
@@ -313,6 +319,7 @@ public class Configuration implements Dto {
         }
     }
 
+    @SuppressWarnings("PMD.AvoidDeeplyNestedIfStmts")
     private boolean checkRuntimeDir() {
         // Runtime directory (sockets etc.)
         if (runtimeDir == null) {
@@ -348,6 +355,7 @@ public class Configuration implements Dto {
         return true;
     }
 
+    @SuppressWarnings("PMD.AvoidDeeplyNestedIfStmts")
     private boolean checkDataDir() {
         // Data directory
         if (dataDir == null) {

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/ConsoleTracker.java

@@ -41,6 +41,7 @@ import org.jgrapes.core.events.Start;
  * A (sub)component that updates the console status in the CR status.
  * Created as child of {@link StatusUpdater}.
  */
+@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 public class ConsoleTracker extends VmDefUpdater {
 
     private VmDefinitionStub vmStub;
@@ -52,6 +53,7 @@ public class ConsoleTracker extends VmDefUpdater {
      *
      * @param componentChannel the component channel
      */
+    @SuppressWarnings("PMD.ConstructorCallsOverridableMethod")
     public ConsoleTracker(Channel componentChannel) {
         super(componentChannel);
         apiClient = (K8sClient) io.kubernetes.client.openapi.Configuration
@@ -89,7 +91,8 @@ public class ConsoleTracker extends VmDefUpdater {
      * @throws ApiException the api exception
      */
     @Handler
-    @SuppressWarnings({ "PMD.AvoidLiteralsInIfCondition" })
+    @SuppressWarnings({ "PMD.AvoidLiteralsInIfCondition",
+        "PMD.AvoidDuplicateLiterals" })
     public void onSpiceInitialized(SpiceInitializedEvent event)
             throws ApiException {
         if (vmStub == null) {
@@ -124,6 +127,7 @@ public class ConsoleTracker extends VmDefUpdater {
      * @throws ApiException the api exception
      */
     @Handler
+    @SuppressWarnings("PMD.AvoidDuplicateLiterals")
     public void onSpiceDisconnected(SpiceDisconnectedEvent event)
             throws ApiException {
         if (vmStub == null) {

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/Constants.java

@@ -21,6 +21,7 @@ package org.jdrupes.vmoperator.runner.qemu;
 /**
  * Some constants.
  */
+@SuppressWarnings("PMD.DataClass")
 public class Constants extends org.jdrupes.vmoperator.common.Constants {
 
     /**

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/CpuController.java

@@ -41,6 +41,7 @@ import org.jgrapes.core.annotation.Handler;
 /**
  * The Class CpuController.
  */
+@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 public class CpuController extends Component {
 
     private Integer currentCpus;

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/DisplayController.java

@@ -43,6 +43,7 @@ import org.jgrapes.util.events.WatchFile;
 /**
  * The Class DisplayController.
  */
+@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 public class DisplayController extends Component {
 
     private String currentPassword;
@@ -58,7 +59,8 @@ public class DisplayController extends Component {
      * @param componentChannel the component channel
      * @param configDir 
      */
-    @SuppressWarnings({ "PMD.ConstructorCallsOverridableMethod" })
+    @SuppressWarnings({ "PMD.AssignmentToNonFinalStatic",
+        "PMD.ConstructorCallsOverridableMethod" })
     public DisplayController(Channel componentChannel, Path configDir) {
         super(componentChannel);
         this.configDir = configDir;
@@ -112,6 +114,7 @@ public class DisplayController extends Component {
      * @param event the event
      */
     @Handler
+    @SuppressWarnings("PMD.EmptyCatchBlock")
     public void onFileChanged(FileChanged event) {
         if (event.path().equals(configDir.resolve(DisplaySecret.PASSWORD))) {
             logger.fine(() -> "Display password updated");

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/QemuMonitor.java

@@ -54,6 +54,7 @@ import org.jgrapes.util.events.ConfigurationUpdate;
  * If the log level for this class is set to fine, the messages 
  * exchanged on the monitor socket are logged.
  */
+@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 public class QemuMonitor extends QemuConnector {
 
     private int powerdownTimeout;
@@ -71,6 +72,8 @@ public class QemuMonitor extends QemuConnector {
      * @param configDir the config dir
      * @throws IOException Signals that an I/O exception has occurred.
      */
+    @SuppressWarnings({ "PMD.AssignmentToNonFinalStatic",
+        "PMD.ConstructorCallsOverridableMethod" })
     public QemuMonitor(Channel componentChannel, Path configDir)
             throws IOException {
         super(componentChannel);

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/RamController.java

@@ -39,6 +39,7 @@ public class RamController extends Component {
      *
      * @param componentChannel the component channel
      */
+    @SuppressWarnings("PMD.AssignmentToNonFinalStatic")
     public RamController(Channel componentChannel) {
         super(componentChannel);
     }

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/Runner.java

@@ -201,7 +201,8 @@ import org.jgrapes.util.events.WatchFile;
  * 
  */
 @SuppressWarnings({ "PMD.ExcessiveImports", "PMD.AvoidPrintStackTrace",
-    "PMD.TooManyMethods", "PMD.CouplingBetweenObjects" })
+    "PMD.DataflowAnomalyAnalysis", "PMD.TooManyMethods",
+    "PMD.CouplingBetweenObjects", "PMD.TooManyFields" })
 public class Runner extends Component {
 
     private static final String TEMPLATE_DIR
@@ -217,6 +218,7 @@ public class Runner extends Component {
         .builder().disable(YAMLGenerator.Feature.WRITE_DOC_START_MARKER)
         .build());
     private final JsonNode defaults;
+    @SuppressWarnings("PMD.UseConcurrentHashMap")
     private final File configFile;
     private final Path configDir;
     private Configuration initialConfig;
@@ -248,7 +250,8 @@ public class Runner extends Component {
      * @param cmdLine the cmd line
      * @throws IOException Signals that an I/O exception has occurred.
      */
-    @SuppressWarnings({ "PMD.ConstructorCallsOverridableMethod" })
+    @SuppressWarnings({ "PMD.SystemPrintln",
+        "PMD.ConstructorCallsOverridableMethod" })
     public Runner(CommandLine cmdLine) throws IOException {
         yamlMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES,
             false);
@@ -384,6 +387,8 @@ public class Runner extends Component {
         }
     }
 
+    @SuppressWarnings({ "PMD.CognitiveComplexity",
+        "PMD.DataflowAnomalyAnalysis" })
     private void setFirmwarePaths(Configuration config) throws IOException {
         JsonNode firmware = defaults.path("firmware").path(config.vm.firmware);
         // Get file for firmware ROM
@@ -615,6 +620,8 @@ public class Runner extends Component {
      * @throws InterruptedException the interrupted exception
      */
     @Handler
+    @SuppressWarnings({ "PMD.SwitchStmtsShouldHaveDefault",
+        "PMD.TooFewBranchesForASwitchStatement" })
     public void onProcessStarted(ProcessStarted event, ProcessChannel channel)
             throws InterruptedException {
         event.startEvent().associated(CommandDefinition.class)
@@ -771,6 +778,7 @@ public class Runner extends Component {
             "The VM has been shut down"));
     }
 
+    @SuppressWarnings("PMD.ConfusingArgumentToVarargsMethod")
     private void shutdown() {
         if (!Set.of(RunState.TERMINATING, RunState.STOPPED).contains(state)) {
             fire(new Stop());

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/StatusUpdater.java

@@ -66,7 +66,8 @@ import org.jgrapes.core.events.Start;
 /**
  * Updates the CR status.
  */
-@SuppressWarnings({ "PMD.CouplingBetweenObjects" })
+@SuppressWarnings({ "PMD.DataflowAnomalyAnalysis",
+    "PMD.CouplingBetweenObjects" })
 public class StatusUpdater extends VmDefUpdater {
 
     @SuppressWarnings("PMD.FieldNamingConventions")
@@ -89,6 +90,7 @@ public class StatusUpdater extends VmDefUpdater {
      *
      * @param componentChannel the component channel
      */
+    @SuppressWarnings("PMD.ConstructorCallsOverridableMethod")
     public StatusUpdater(Channel componentChannel) {
         super(componentChannel);
         attach(new ConsoleTracker(componentChannel));
@@ -151,6 +153,7 @@ public class StatusUpdater extends VmDefUpdater {
      * @throws ApiException 
      */
     @Handler
+    @SuppressWarnings("PMD.AvoidDuplicateLiterals")
     public void onConfigureQemu(ConfigureQemu event)
             throws ApiException {
         guestShutdownStops = event.configuration().guestShutdownStops;
@@ -184,7 +187,8 @@ public class StatusUpdater extends VmDefUpdater {
      * @throws ApiException 
      */
     @Handler
-    @SuppressWarnings({ "PMD.AssignmentInOperand" })
+    @SuppressWarnings({ "PMD.AvoidLiteralsInIfCondition",
+        "PMD.AssignmentInOperand", "PMD.AvoidDuplicateLiterals" })
     public void onRunnerStateChanged(RunnerStateChange event)
             throws ApiException {
         VmDefinition vmDef;
@@ -421,6 +425,7 @@ public class StatusUpdater extends VmDefUpdater {
      * @throws ApiException 
      */
     @Handler
+    @SuppressWarnings("PMD.AssignmentInOperand")
     public void onVmopAgentLoggedIn(VmopAgentLoggedIn event)
             throws ApiException {
         vmStub.updateStatus(from -> {
@@ -437,6 +442,7 @@ public class StatusUpdater extends VmDefUpdater {
      * @throws ApiException 
      */
     @Handler
+    @SuppressWarnings("PMD.AssignmentInOperand")
     public void onVmopAgentLoggedOut(VmopAgentLoggedOut event)
             throws ApiException {
         vmStub.updateStatus(from -> {

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/VmDefUpdater.java

@@ -43,6 +43,7 @@ import org.jgrapes.util.events.InitialConfiguration;
 /**
  * Updates the CR status.
  */
+@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 public class VmDefUpdater extends Component {
 
     protected String namespace;

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/VmopAgentClient.java

@@ -87,7 +87,8 @@ public class VmopAgentClient extends AgentConnector {
     }
 
     @Override
-    @SuppressWarnings({ "PMD.AvoidLiteralsInIfCondition" })
+    @SuppressWarnings({ "PMD.UnnecessaryReturn",
+        "PMD.AvoidLiteralsInIfCondition" })
     protected void processInput(String line) throws IOException {
         logger.finer(() -> "vmop agent(in): " + line);
 

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/commands/QmpCapabilities.java

@@ -25,7 +25,8 @@ import com.fasterxml.jackson.databind.JsonNode;
  */
 public class QmpCapabilities extends QmpCommand {
 
-    @SuppressWarnings({ "PMD.FieldNamingConventions" })
+    @SuppressWarnings({ "PMD.FieldNamingConventions",
+        "PMD.VariableNamingConventions" })
     private static final JsonNode jsonTemplate
         = parseJson("{ \"execute\": \"qmp_capabilities\" }");
 

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/commands/QmpChangeMedium.java

@@ -27,7 +27,8 @@ import com.fasterxml.jackson.databind.node.ObjectNode;
  */
 public class QmpChangeMedium extends QmpCommand {
 
-    @SuppressWarnings({ "PMD.FieldNamingConventions" })
+    @SuppressWarnings({ "PMD.FieldNamingConventions",
+        "PMD.VariableNamingConventions" })
     private static final JsonNode jsonTemplate
         = parseJson("{ \"execute\": \"blockdev-change-medium\",\"arguments\": {"
             + "\"id\": \"\",\"filename\": \"\",\"format\": \"raw\","

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/commands/QmpCommand.java

@@ -30,7 +30,8 @@ import java.util.logging.Logger;
  */
 public abstract class QmpCommand {
 
-    @SuppressWarnings({ "PMD.FieldNamingConventions" })
+    @SuppressWarnings({ "PMD.FieldNamingConventions",
+        "PMD.VariableNamingConventions" })
     protected static final ObjectMapper mapper = new ObjectMapper();
 
     /**

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/commands/QmpCont.java

@@ -25,7 +25,8 @@ import com.fasterxml.jackson.databind.JsonNode;
  */
 public class QmpCont extends QmpCommand {
 
-    @SuppressWarnings({ "PMD.FieldNamingConventions" })
+    @SuppressWarnings({ "PMD.FieldNamingConventions",
+        "PMD.VariableNamingConventions" })
     private static final JsonNode jsonTemplate
         = parseJson("{ \"execute\": \"cont\" }");
 

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/commands/QmpDelCpu.java

@@ -27,7 +27,8 @@ import com.fasterxml.jackson.databind.node.ObjectNode;
  */
 public class QmpDelCpu extends QmpCommand {
 
-    @SuppressWarnings({ "PMD.FieldNamingConventions" })
+    @SuppressWarnings({ "PMD.FieldNamingConventions",
+        "PMD.VariableNamingConventions" })
     private static final JsonNode jsonTemplate
         = parseJson("{ \"execute\": \"device_del\", "
             + "\"arguments\": " + "{ \"id\": 0 } }");

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/commands/QmpOpenTray.java

@@ -27,7 +27,8 @@ import com.fasterxml.jackson.databind.node.ObjectNode;
  */
 public class QmpOpenTray extends QmpCommand {
 
-    @SuppressWarnings({ "PMD.FieldNamingConventions" })
+    @SuppressWarnings({ "PMD.FieldNamingConventions",
+        "PMD.VariableNamingConventions" })
     private static final JsonNode jsonTemplate
         = parseJson("{ \"execute\": \"blockdev-open-tray\",\"arguments\": {"
             + "\"id\": \"\" } }");

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/commands/QmpPowerdown.java

@@ -25,7 +25,8 @@ import com.fasterxml.jackson.databind.JsonNode;
  */
 public class QmpPowerdown extends QmpCommand {
 
-    @SuppressWarnings({ "PMD.FieldNamingConventions" })
+    @SuppressWarnings({ "PMD.FieldNamingConventions",
+        "PMD.VariableNamingConventions" })
     private static final JsonNode jsonTemplate
         = parseJson("{ \"execute\": \"system_powerdown\" }");
 

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/commands/QmpQueryHotpluggableCpus.java

@@ -25,7 +25,8 @@ import com.fasterxml.jackson.databind.JsonNode;
  */
 public class QmpQueryHotpluggableCpus extends QmpCommand {
 
-    @SuppressWarnings({ "PMD.FieldNamingConventions" })
+    @SuppressWarnings({ "PMD.FieldNamingConventions",
+        "PMD.VariableNamingConventions" })
     private static final JsonNode jsonTemplate = parseJson(
         "{\"execute\":\"query-hotpluggable-cpus\",\"arguments\":{}}");
 

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/commands/QmpRemoveMedium.java

@@ -27,7 +27,8 @@ import com.fasterxml.jackson.databind.node.ObjectNode;
  */
 public class QmpRemoveMedium extends QmpCommand {
 
-    @SuppressWarnings({ "PMD.FieldNamingConventions" })
+    @SuppressWarnings({ "PMD.FieldNamingConventions",
+        "PMD.VariableNamingConventions" })
     private static final JsonNode jsonTemplate
         = parseJson("{ \"execute\": \"blockdev-remove-medium\",\"arguments\": {"
             + "\"id\": \"\" } }");

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/commands/QmpReset.java

@@ -25,7 +25,8 @@ import com.fasterxml.jackson.databind.JsonNode;
  */
 public class QmpReset extends QmpCommand {
 
-    @SuppressWarnings({ "PMD.FieldNamingConventions" })
+    @SuppressWarnings({ "PMD.FieldNamingConventions",
+        "PMD.VariableNamingConventions" })
     private static final JsonNode jsonTemplate
         = parseJson("{ \"execute\": \"system_reset\" }");
 

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/commands/QmpSetBalloon.java

@@ -28,7 +28,8 @@ import java.math.BigInteger;
  */
 public class QmpSetBalloon extends QmpCommand {
 
-    @SuppressWarnings({ "PMD.FieldNamingConventions" })
+    @SuppressWarnings({ "PMD.FieldNamingConventions",
+        "PMD.VariableNamingConventions" })
     private static final JsonNode jsonTemplate
         = parseJson("{ \"execute\": \"balloon\", "
             + "\"arguments\": " + "{ \"value\": 0 } }");

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/events/MonitorEvent.java

@@ -49,6 +49,7 @@ public class MonitorEvent extends Event<Void> {
      * @param response the response
      * @return the optional
      */
+    @SuppressWarnings("PMD.TooFewBranchesForASwitchStatement")
     public static Optional<MonitorEvent> from(JsonNode response) {
         try {
             var kind = Kind.valueOf(response.get("event").asText());

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/events/RunnerStateChange.java

@@ -26,6 +26,7 @@ import org.jgrapes.core.Event;
 /**
  * The Class RunnerStateChange.
  */
+@SuppressWarnings("PMD.DataClass")
 public class RunnerStateChange extends Event<Void> {
 
     /**

org.jdrupes.vmoperator.util/build.sbt

@@ -0,0 +1,5 @@
+
+libraryDependencies ++= Seq(
+    "org.freemarker" % "freemarker" % "[2.3.32,2.4)",
+    "com.google.code.gson" % "gson" % "[2.10.1,2.11)"
+)

org.jdrupes.vmoperator.util/src/org/jdrupes/vmoperator/util/DataPath.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
  */
 public final class DataPath {
 
+    @SuppressWarnings("PMD.FieldNamingConventions")
     private static final Logger logger
         = Logger.getLogger(DataPath.class.getName());
 
@@ -55,6 +56,7 @@ public final class DataPath {
      * @param selectors the selectors
      * @return the result
      */
+    @SuppressWarnings("PMD.UseLocaleWithCaseConversions")
     public static <T> Optional<T> get(Object from, Object... selectors) {
         Object cur = from;
         for (var selector : selectors) {
@@ -130,6 +132,7 @@ public final class DataPath {
     @SuppressWarnings({ "PMD.CognitiveComplexity", "unchecked" })
     public static <T> T deepCopy(T object) {
         if (object instanceof Map map) {
+            @SuppressWarnings("PMD.UseConcurrentHashMap")
             Map<Object, Object> copy;
             try {
                 copy = (Map<Object, Object>) object.getClass().getConstructor()

org.jdrupes.vmoperator.util/src/org/jdrupes/vmoperator/util/GsonPtr.java

@@ -32,7 +32,8 @@ import java.util.function.Supplier;
 /**
  * Utility class for pointing to elements on a Gson (Json) tree.
  */
-@SuppressWarnings({ "PMD.ClassWithOnlyPrivateConstructorsShouldBeFinal" })
+@SuppressWarnings({ "PMD.DataflowAnomalyAnalysis",
+    "PMD.ClassWithOnlyPrivateConstructorsShouldBeFinal", "PMD.GodClass" })
 public class GsonPtr {
 
     private final JsonElement position;
@@ -101,7 +102,7 @@ public class GsonPtr {
      * @param selectors the selectors
      * @return the Gson pointer
      */
-    @SuppressWarnings({ "PMD.PreserveStackTrace" })
+    @SuppressWarnings({ "PMD.ShortMethodName", "PMD.PreserveStackTrace" })
     public Optional<GsonPtr> get(Object... selectors) {
         JsonElement element = position;
         for (Object sel : selectors) {
@@ -145,6 +146,7 @@ public class GsonPtr {
      * @param cls the cls
      * @return the result
      */
+    @SuppressWarnings({ "PMD.AvoidBranchingStatementAsLastInLoop" })
     public <T extends JsonElement> T getAs(Class<T> cls) {
         if (cls.isAssignableFrom(position.getClass())) {
             return cls.cast(position);

org.jdrupes.vmoperator.vmaccess/src/org/jdrupes/vmoperator/vmaccess/VmAccess.java

@@ -111,8 +111,9 @@ import org.jgrapes.webconsole.base.freemarker.FreeMarkerConlet;
  *     users and roles.
  *
  */
-@SuppressWarnings({ "PMD.ExcessiveImports", "PMD.CouplingBetweenObjects",
+@SuppressWarnings({ "PMD.DataflowAnomalyAnalysis", "PMD.ExcessiveImports",
-    "PMD.GodClass", "PMD.TooManyMethods", "PMD.CyclomaticComplexity" })
+    "PMD.CouplingBetweenObjects", "PMD.GodClass", "PMD.TooManyMethods",
+    "PMD.CyclomaticComplexity" })
 public class VmAccess extends FreeMarkerConlet<VmAccess.ResourceModel> {
 
     private static final String VM_NAME_PROPERTY = "vmName";
@@ -166,7 +167,7 @@ public class VmAccess extends FreeMarkerConlet<VmAccess.ResourceModel> {
      * 
      * @param event the event
      */
-    @SuppressWarnings({ "unchecked" })
+    @SuppressWarnings({ "unchecked", "PMD.AvoidDuplicateLiterals" })
     @Handler
     public void onConfigurationUpdate(ConfigurationUpdate event) {
         event.structured(componentPath())
@@ -266,7 +267,7 @@ public class VmAccess extends FreeMarkerConlet<VmAccess.ResourceModel> {
     public void onConsoleConfigured(ConsoleConfigured event,
             ConsoleConnection connection) throws InterruptedException,
             IOException {
-        @SuppressWarnings({ "unchecked" })
+        @SuppressWarnings({ "unchecked", "PMD.PrematureDeclaration" })
         final var rendered
             = (Set<ResourceModel>) connection.session().get(RENDERED);
         connection.session().remove(RENDERED);
@@ -276,7 +277,8 @@ public class VmAccess extends FreeMarkerConlet<VmAccess.ResourceModel> {
         addMissingConlets(event, connection, rendered);
     }
 
-    @SuppressWarnings({ "PMD.AvoidInstantiatingObjectsInLoops" })
+    @SuppressWarnings({ "PMD.AvoidInstantiatingObjectsInLoops",
+        "PMD.AvoidDuplicateLiterals" })
     private void addMissingConlets(ConsoleConfigured event,
             ConsoleConnection connection, final Set<ResourceModel> rendered)
             throws InterruptedException {
@@ -404,6 +406,7 @@ public class VmAccess extends FreeMarkerConlet<VmAccess.ResourceModel> {
     }
 
     @Override
+    @SuppressWarnings({ "PMD.AvoidInstantiatingObjectsInLoops" })
     protected Set<RenderMode> doRenderConlet(RenderConletRequestBase<?> event,
             ConsoleConnection channel, String conletId, ResourceModel model)
             throws Exception {
@@ -652,8 +655,9 @@ public class VmAccess extends FreeMarkerConlet<VmAccess.ResourceModel> {
      * @throws InterruptedException 
      */
     @Handler(namedChannels = "manager")
-    @SuppressWarnings({ "PMD.CognitiveComplexity",
+    @SuppressWarnings({ "PMD.ConfusingTernary", "PMD.CognitiveComplexity",
-        "PMD.AvoidInstantiatingObjectsInLoops" })
+        "PMD.AvoidInstantiatingObjectsInLoops", "PMD.AvoidDuplicateLiterals",
+        "PMD.ConfusingArgumentToVarargsMethod" })
     public void onVmResourceChanged(VmResourceChanged event, VmChannel channel)
             throws IOException, InterruptedException {
         var vmDef = event.vmDefinition();
@@ -849,7 +853,8 @@ public class VmAccess extends FreeMarkerConlet<VmAccess.ResourceModel> {
                 model.getConletId(), "openConsole", cf)));
     }
 
-    @SuppressWarnings({ "PMD.UseLocaleWithCaseConversions" })
+    @SuppressWarnings({ "PMD.AvoidLiteralsInIfCondition",
+        "PMD.UseLocaleWithCaseConversions" })
     private void selectResource(NotifyConletModel event,
             ConsoleConnection channel, ResourceModel model)
             throws JsonProcessingException, InterruptedException {
@@ -876,6 +881,7 @@ public class VmAccess extends FreeMarkerConlet<VmAccess.ResourceModel> {
     /**
      * The Class AccessModel.
      */
+    @SuppressWarnings("PMD.DataClass")
     public static class ResourceModel extends ConletBaseModel {
 
         /**

org.jdrupes.vmoperator.vmmgmt/src/org/jdrupes/vmoperator/vmmgmt/TimeSeries.java

@@ -28,6 +28,7 @@ import java.util.List;
 /**
  * The Class TimeSeries.
  */
+@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 public class TimeSeries {
 
     @SuppressWarnings("PMD.LooseCoupling")

org.jdrupes.vmoperator.vmmgmt/src/org/jdrupes/vmoperator/vmmgmt/VmMgmt.java

@@ -75,7 +75,8 @@ import org.jgrapes.webconsole.base.freemarker.FreeMarkerConlet;
 /**
  * The Class {@link VmMgmt}.
  */
-@SuppressWarnings({ "PMD.CouplingBetweenObjects", "PMD.ExcessiveImports" })
+@SuppressWarnings({ "PMD.DataflowAnomalyAnalysis", "PMD.CouplingBetweenObjects",
+    "PMD.ExcessiveImports" })
 public class VmMgmt extends FreeMarkerConlet<VmMgmt.VmsModel> {
 
     private Class<?> preferredIpVersion = Inet4Address.class;
@@ -111,7 +112,7 @@ public class VmMgmt extends FreeMarkerConlet<VmMgmt.VmsModel> {
      * 
      * @param event the event
      */
-    @SuppressWarnings({ "unchecked" })
+    @SuppressWarnings({ "unchecked", "PMD.AvoidDuplicateLiterals" })
     @Handler
     public void onConfigurationUpdate(ConfigurationUpdate event) {
         event.structured("/Manager/GuiHttpServer"
@@ -176,6 +177,7 @@ public class VmMgmt extends FreeMarkerConlet<VmMgmt.VmsModel> {
     }
 
     @Override
+    @SuppressWarnings("PMD.AvoidInstantiatingObjectsInLoops")
     protected Set<RenderMode> doRenderConlet(RenderConletRequestBase<?> event,
             ConsoleConnection channel, String conletId, VmsModel conletState)
             throws Exception {
@@ -228,6 +230,7 @@ public class VmMgmt extends FreeMarkerConlet<VmMgmt.VmsModel> {
             simplifiedVmDefinition(vmDef, user, roles)));
     }
 
+    @SuppressWarnings("PMD.AvoidDuplicateLiterals")
     private Map<String, Object> simplifiedVmDefinition(VmDefinition vmDef,
             String user, List<String> roles) {
         // Convert RAM sizes to unitless numbers
@@ -267,8 +270,9 @@ public class VmMgmt extends FreeMarkerConlet<VmMgmt.VmsModel> {
      * @throws IOException 
      */
     @Handler(namedChannels = "manager")
-    @SuppressWarnings({ "PMD.CognitiveComplexity",
+    @SuppressWarnings({ "PMD.ConfusingTernary", "PMD.CognitiveComplexity",
-        "PMD.AvoidInstantiatingObjectsInLoops" })
+        "PMD.AvoidInstantiatingObjectsInLoops", "PMD.AvoidDuplicateLiterals",
+        "PMD.ConfusingArgumentToVarargsMethod" })
     public void onVmResourceChanged(VmResourceChanged event, VmChannel channel)
             throws IOException {
         var vmName = event.vmDefinition().name();
@@ -374,6 +378,8 @@ public class VmMgmt extends FreeMarkerConlet<VmMgmt.VmsModel> {
 
     }
 
+    @SuppressWarnings({ "PMD.AvoidLiteralsInIfCondition",
+        "PMD.LambdaCanBeMethodReference" })
     private Summary evaluateSummary(boolean force) {
         if (!force && cachedSummary != null) {
             return cachedSummary;
@@ -396,7 +402,8 @@ public class VmMgmt extends FreeMarkerConlet<VmMgmt.VmsModel> {
     }
 
     @Override
-    @SuppressWarnings({ "PMD.NcssCount" })
+    @SuppressWarnings({ "PMD.AvoidDecimalLiteralsInBigDecimalConstructor",
+        "PMD.NcssCount" })
     protected void doUpdateConletState(NotifyConletModel event,
             ConsoleConnection channel, VmsModel model) throws Exception {
         event.stop();

project/build.properties

@@ -0,0 +1 @@
+sbt.version=1.10.11

project/plugins.sbt

@@ -0,0 +1 @@
+addSbtPlugin("com.github.sbt" % "sbt-native-packager" % "[1.11.1,1.12)")

sbt

@@ -0,0 +1,664 @@
+#!/usr/bin/env bash
+#
+# A more capable sbt runner, coincidentally also called sbt.
+# Author: Paul Phillips <paulp@improving.org>
+# https://github.com/paulp/sbt-extras
+#
+# Generated from http://www.opensource.org/licenses/bsd-license.php
+# Copyright (c) 2011, Paul Phillips. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#     * Neither the name of the author nor the names of its contributors
+# may be used to endorse or promote products derived from this software
+# without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+# TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+set -o pipefail
+
+declare -r sbt_release_version="1.10.11"
+declare -r sbt_unreleased_version="1.10.11"
+
+declare -r latest_213="2.13.16"
+declare -r latest_212="2.12.20"
+declare -r latest_211="2.11.12"
+declare -r latest_210="2.10.7"
+declare -r latest_29="2.9.3"
+declare -r latest_28="2.8.2"
+
+declare -r buildProps="project/build.properties"
+
+declare -r sbt_launch_ivy_release_repo="https://repo.typesafe.com/typesafe/ivy-releases"
+declare -r sbt_launch_ivy_snapshot_repo="https://repo.scala-sbt.org/scalasbt/ivy-snapshots"
+declare -r sbt_launch_mvn_release_repo="https://repo1.maven.org/maven2"
+declare -r sbt_launch_mvn_snapshot_repo="https://repo.scala-sbt.org/scalasbt/maven-snapshots"
+
+declare -r default_jvm_opts_common="-Xms512m -Xss2m -XX:MaxInlineLevel=18"
+declare -r noshare_opts="-Dsbt.global.base=project/.sbtboot -Dsbt.boot.directory=project/.boot -Dsbt.ivy.home=project/.ivy -Dsbt.coursier.home=project/.coursier"
+
+declare sbt_jar sbt_dir sbt_create sbt_version sbt_script sbt_new
+declare sbt_explicit_version
+declare verbose noshare batch trace_level
+
+declare java_cmd="java"
+declare sbt_launch_dir="$HOME/.sbt/launchers"
+declare sbt_launch_repo
+
+# pull -J and -D options to give to java.
+declare -a java_args scalac_args sbt_commands residual_args
+
+# args to jvm/sbt via files or environment variables
+declare -a extra_jvm_opts extra_sbt_opts
+
+echoerr() { echo >&2 "$@"; }
+vlog()    { [[ -n "$verbose" ]] && echoerr "$@"; }
+die()     {
+  echo "Aborting: $*"
+  exit 1
+}
+
+setTrapExit() {
+  # save stty and trap exit, to ensure echo is re-enabled if we are interrupted.
+  SBT_STTY="$(stty -g 2>/dev/null)"
+  export SBT_STTY
+
+  # restore stty settings (echo in particular)
+  onSbtRunnerExit() {
+    [ -t 0 ] || return
+    vlog ""
+    vlog "restoring stty: $SBT_STTY"
+    stty "$SBT_STTY"
+  }
+
+  vlog "saving stty: $SBT_STTY"
+  trap onSbtRunnerExit EXIT
+}
+
+# this seems to cover the bases on OSX, and someone will
+# have to tell me about the others.
+get_script_path() {
+  local path="$1"
+  [[ -L "$path" ]] || {
+    echo "$path"
+    return
+  }
+
+  local -r target="$(readlink "$path")"
+  if [[ "${target:0:1}" == "/" ]]; then
+    echo "$target"
+  else
+    echo "${path%/*}/$target"
+  fi
+}
+
+script_path="$(get_script_path "${BASH_SOURCE[0]}")"
+declare -r script_path
+script_name="${script_path##*/}"
+declare -r script_name
+
+init_default_option_file() {
+  local overriding_var="${!1}"
+  local default_file="$2"
+  if [[ ! -r "$default_file" && "$overriding_var" =~ ^@(.*)$ ]]; then
+    local envvar_file="${BASH_REMATCH[1]}"
+    if [[ -r "$envvar_file" ]]; then
+      default_file="$envvar_file"
+    fi
+  fi
+  echo "$default_file"
+}
+
+sbt_opts_file="$(init_default_option_file SBT_OPTS .sbtopts)"
+sbtx_opts_file="$(init_default_option_file SBTX_OPTS .sbtxopts)"
+jvm_opts_file="$(init_default_option_file JVM_OPTS .jvmopts)"
+
+build_props_sbt() {
+  [[ -r "$buildProps" ]] &&
+    grep '^sbt\.version' "$buildProps" | tr '=\r' ' ' | awk '{ print $2; }'
+}
+
+set_sbt_version() {
+  sbt_version="${sbt_explicit_version:-$(build_props_sbt)}"
+  [[ -n "$sbt_version" ]] || sbt_version=$sbt_release_version
+  export sbt_version
+}
+
+url_base() {
+  local version="$1"
+
+  case "$version" in
+    0.7.*)     echo "https://storage.googleapis.com/google-code-archive-downloads/v2/code.google.com/simple-build-tool" ;;
+    0.10.*)    echo "$sbt_launch_ivy_release_repo" ;;
+    0.11.[12]) echo "$sbt_launch_ivy_release_repo" ;;
+    0.*-[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]-[0-9][0-9][0-9][0-9][0-9][0-9]) # ie "*-yyyymmdd-hhMMss"
+      echo          "$sbt_launch_ivy_snapshot_repo" ;;
+    0.*)       echo "$sbt_launch_ivy_release_repo" ;;
+    *-[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]T[0-9][0-9][0-9][0-9][0-9][0-9]) # ie "*-yyyymmddThhMMss"
+      echo          "$sbt_launch_mvn_snapshot_repo" ;;
+    *)         echo "$sbt_launch_mvn_release_repo" ;;
+  esac
+}
+
+make_url() {
+  local version="$1"
+
+  local base="${sbt_launch_repo:-$(url_base "$version")}"
+
+  case "$version" in
+    0.7.*)     echo "$base/sbt-launch-0.7.7.jar" ;;
+    0.10.*)    echo "$base/org.scala-tools.sbt/sbt-launch/$version/sbt-launch.jar" ;;
+    0.11.[12]) echo "$base/org.scala-tools.sbt/sbt-launch/$version/sbt-launch.jar" ;;
+    0.*)       echo "$base/org.scala-sbt/sbt-launch/$version/sbt-launch.jar" ;;
+    *)         echo "$base/org/scala-sbt/sbt-launch/$version/sbt-launch-${version}.jar" ;;
+  esac
+}
+
+addJava()      {
+  vlog "[addJava] arg = '$1'"
+  java_args+=("$1")
+}
+addSbt()       {
+  vlog "[addSbt] arg = '$1'"
+  sbt_commands+=("$1")
+}
+addScalac()    {
+  vlog "[addScalac] arg = '$1'"
+  scalac_args+=("$1")
+}
+addResidual()  {
+  vlog "[residual] arg = '$1'"
+  residual_args+=("$1")
+}
+
+addResolver() { addSbt "set resolvers += $1"; }
+
+addDebugger() { addJava "-Xdebug" && addJava "-Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=$1"; }
+
+setThisBuild() {
+  vlog "[addBuild] args = '$*'"
+  local key="$1" && shift
+  addSbt "set $key in ThisBuild := $*"
+}
+setScalaVersion() {
+  [[ "$1" == *"-SNAPSHOT" ]] && addResolver 'Resolver.sonatypeRepo("snapshots")'
+  addSbt "++ $1"
+}
+setJavaHome() {
+  java_cmd="$1/bin/java"
+  setThisBuild javaHome "_root_.scala.Some(file(\"$1\"))"
+  export JAVA_HOME="$1"
+  export JDK_HOME="$1"
+  export PATH="$JAVA_HOME/bin:$PATH"
+}
+
+getJavaVersion() {
+  local -r str=$("$1" -version 2>&1 | grep -E -e '(java|openjdk) version' | awk '{ print $3 }' | tr -d '"')
+
+  # java -version on java8 says 1.8.x
+  # but on 9 and 10 it's 9.x.y and 10.x.y.
+  if [[ "$str" =~ ^1\.([0-9]+)(\..*)?$ ]]; then
+    echo "${BASH_REMATCH[1]}"
+  # Fixes https://github.com/dwijnand/sbt-extras/issues/326
+  elif [[ "$str" =~ ^([0-9]+)(\..*)?(-ea)?$ ]]; then
+    echo "${BASH_REMATCH[1]}"
+  elif [[ -n "$str" ]]; then
+    echoerr "Can't parse java version from: $str"
+  fi
+}
+
+checkJava() {
+  # Warn if there is a Java version mismatch between PATH and JAVA_HOME/JDK_HOME
+
+  [[ -n "$JAVA_HOME" && -e "$JAVA_HOME/bin/java"    ]] && java="$JAVA_HOME/bin/java"
+  [[ -n "$JDK_HOME" && -e "$JDK_HOME/lib/tools.jar" ]] && java="$JDK_HOME/bin/java"
+
+  if [[ -n "$java" ]]; then
+    pathJavaVersion=$(getJavaVersion java)
+    homeJavaVersion=$(getJavaVersion "$java")
+    if [[ "$pathJavaVersion" != "$homeJavaVersion" ]]; then
+      echoerr "Warning: Java version mismatch between PATH and JAVA_HOME/JDK_HOME, sbt will use the one in PATH"
+      echoerr "  Either: fix your PATH, remove JAVA_HOME/JDK_HOME or use -java-home"
+      echoerr "  java version from PATH:               $pathJavaVersion"
+      echoerr "  java version from JAVA_HOME/JDK_HOME: $homeJavaVersion"
+    fi
+  fi
+}
+
+java_version() {
+  local -r version=$(getJavaVersion "$java_cmd")
+  vlog "Detected Java version: $version"
+  echo "$version"
+}
+
+is_apple_silicon() { [[ "$(uname -s)" == "Darwin" && "$(uname -m)" == "arm64" ]]; }
+
+# MaxPermSize critical on pre-8 JVMs but incurs noisy warning on 8+
+default_jvm_opts() {
+  local -r v="$(java_version)"
+  if [[ $v -ge 17 ]]; then
+    echo "$default_jvm_opts_common"
+  elif [[ $v -ge 10 ]]; then
+    if is_apple_silicon; then
+      # As of Dec 2020, JVM for Apple Silicon (M1) doesn't support JVMCI
+      echo "$default_jvm_opts_common"
+    else
+      echo "$default_jvm_opts_common -XX:+UnlockExperimentalVMOptions -XX:+UseJVMCICompiler"
+    fi
+  elif [[ $v -ge 8 ]]; then
+    echo "$default_jvm_opts_common"
+  else
+    echo "-XX:MaxPermSize=384m $default_jvm_opts_common"
+  fi
+}
+
+execRunner() {
+  # print the arguments one to a line, quoting any containing spaces
+  vlog "# Executing command line:" && {
+    for arg; do
+      if [[ -n "$arg" ]]; then
+        if printf "%s\n" "$arg" | grep -q ' '; then
+          printf >&2 "\"%s\"\n" "$arg"
+        else
+          printf >&2 "%s\n" "$arg"
+        fi
+      fi
+    done
+    vlog ""
+  }
+
+  setTrapExit
+
+  if [[ -n "$batch" ]]; then
+    "$@" </dev/null
+  else
+    "$@"
+  fi
+}
+
+jar_url() { make_url "$1"; }
+
+is_cygwin() { [[ "$(uname -a)" == "CYGWIN"* ]]; }
+
+jar_file() {
+  is_cygwin &&
+    cygpath -w "$sbt_launch_dir/$1/sbt-launch.jar" ||
+    echo "$sbt_launch_dir/$1/sbt-launch.jar"
+}
+
+download_url() {
+  local url="$1"
+  local jar="$2"
+
+  mkdir -p "${jar%/*}" && {
+    if command -v curl >/dev/null 2>&1; then
+      curl --fail --silent --location "$url" --output "$jar"
+    elif command -v wget >/dev/null 2>&1; then
+      wget -q -O "$jar" "$url"
+    fi
+  } && [[ -r "$jar" ]]
+}
+
+acquire_sbt_jar() {
+  {
+    sbt_jar="$(jar_file "$sbt_version")"
+    [[ -r "$sbt_jar" ]]
+  } || {
+    sbt_jar="$HOME/.ivy2/local/org.scala-sbt/sbt-launch/$sbt_version/jars/sbt-launch.jar"
+    [[ -r "$sbt_jar" ]]
+  } || {
+    sbt_jar="$(jar_file "$sbt_version")"
+    jar_url="$(make_url "$sbt_version")"
+
+    echoerr "Downloading sbt launcher for ${sbt_version}:"
+    echoerr "  From  ${jar_url}"
+    echoerr "    To  ${sbt_jar}"
+
+    download_url "${jar_url}" "${sbt_jar}"
+
+    case "${sbt_version}" in
+      0.*)
+        vlog "SBT versions < 1.0 do not have published MD5 checksums, skipping check"
+        echo ""
+        ;;
+      *)   verify_sbt_jar "${sbt_jar}" ;;
+    esac
+  }
+}
+
+verify_sbt_jar() {
+  local jar="${1}"
+  local md5="${jar}.md5"
+  md5url="$(make_url "${sbt_version}").md5"
+
+  echoerr "Downloading sbt launcher ${sbt_version} md5 hash:"
+  echoerr "  From  ${md5url}"
+  echoerr "    To  ${md5}"
+
+  download_url "${md5url}" "${md5}" >/dev/null 2>&1
+
+  if command -v md5sum >/dev/null 2>&1; then
+    if echo "$(cat "${md5}")  ${jar}" | md5sum -c -; then
+      rm -rf "${md5}"
+      return 0
+    else
+      echoerr "Checksum does not match"
+      return 1
+    fi
+  elif command -v md5 >/dev/null 2>&1; then
+    if [ "$(md5 -q "${jar}")" == "$(cat "${md5}")" ]; then
+      rm -rf "${md5}"
+      return 0
+    else
+      echoerr "Checksum does not match"
+      return 1
+    fi
+  elif command -v openssl >/dev/null 2>&1; then
+    if [ "$(openssl md5 -r "${jar}" | awk '{print $1}')" == "$(cat "${md5}")" ]; then
+      rm -rf "${md5}"
+      return 0
+    else
+      echoerr "Checksum does not match"
+      return 1
+    fi
+  else
+    echoerr "Could not find an MD5 command"
+    return 1
+  fi
+}
+
+usage() {
+  set_sbt_version
+  cat <<EOM
+Usage: $script_name [options]
+
+Note that options which are passed along to sbt begin with -- whereas
+options to this runner use a single dash. Any sbt command can be scheduled
+to run first by prefixing the command with --, so --warn, --error and so on
+are not special.
+
+  -h | -help         print this message
+  -v                 verbose operation (this runner is chattier)
+  -d, -w, -q         aliases for --debug, --warn, --error (q means quiet)
+  -x                 debug this script
+  -trace <level>     display stack traces with a max of <level> frames (default: -1, traces suppressed)
+  -debug-inc         enable debugging log for the incremental compiler
+  -no-colors         disable ANSI color codes
+  -sbt-create        start sbt even if current directory contains no sbt project
+  -sbt-dir   <path>  path to global settings/plugins directory (default: ~/.sbt/<version>)
+  -sbt-boot  <path>  path to shared boot directory (default: ~/.sbt/boot in 0.11+)
+  -ivy       <path>  path to local Ivy repository (default: ~/.ivy2)
+  -no-share          use all local caches; no sharing
+  -offline           put sbt in offline mode
+  -jvm-debug <port>  Turn on JVM debugging, open at the given port.
+  -batch             Disable interactive mode
+  -prompt <expr>     Set the sbt prompt; in expr, 's' is the State and 'e' is Extracted
+  -script <file>     Run the specified file as a scala script
+
+  # sbt version (default: sbt.version from $buildProps if present, otherwise $sbt_release_version)
+  -sbt-version <version>  use the specified version of sbt (default: $sbt_release_version)
+  -sbt-force-latest       force the use of the latest release of sbt: $sbt_release_version
+  -sbt-dev                use the latest pre-release version of sbt: $sbt_unreleased_version
+  -sbt-jar      <path>    use the specified jar as the sbt launcher
+  -sbt-launch-dir <path>  directory to hold sbt launchers (default: $sbt_launch_dir)
+  -sbt-launch-repo <url>  repo url for downloading sbt launcher jar (default: $(url_base "$sbt_version"))
+
+  # scala version (default: as chosen by sbt)
+  -28                        use $latest_28
+  -29                        use $latest_29
+  -210                       use $latest_210
+  -211                       use $latest_211
+  -212                       use $latest_212
+  -213                       use $latest_213
+  -scala-home <path>         use the scala build at the specified directory
+  -scala-version <version>   use the specified version of scala
+  -binary-version <version>  use the specified scala version when searching for dependencies
+
+  # java version (default: java from PATH, currently $(java -version 2>&1 | grep version))
+  -java-home <path>          alternate JAVA_HOME
+
+  # passing options to the jvm - note it does NOT use JAVA_OPTS due to pollution
+  # The default set is used if JVM_OPTS is unset and no -jvm-opts file is found
+  <default>         $(default_jvm_opts)
+  JVM_OPTS          environment variable holding either the jvm args directly, or
+                    the reference to a file containing jvm args if given path is prepended by '@' (e.g. '@/etc/jvmopts')
+                    Note: "@"-file is overridden by local '.jvmopts' or '-jvm-opts' argument.
+  -jvm-opts <path>  file containing jvm args (if not given, .jvmopts in project root is used if present)
+  -Dkey=val         pass -Dkey=val directly to the jvm
+  -J-X              pass option -X directly to the jvm (-J is stripped)
+
+  # passing options to sbt, OR to this runner
+  SBT_OPTS          environment variable holding either the sbt args directly, or
+                    the reference to a file containing sbt args if given path is prepended by '@' (e.g. '@/etc/sbtopts')
+                    Note: "@"-file is overridden by local '.sbtopts' or '-sbt-opts' argument.
+  -sbt-opts <path>  file containing sbt args (if not given, .sbtopts in project root is used if present)
+  -S-X              add -X to sbt's scalacOptions (-S is stripped)
+
+  # passing options exclusively to this runner
+  SBTX_OPTS         environment variable holding either the sbt-extras args directly, or
+                    the reference to a file containing sbt-extras args if given path is prepended by '@' (e.g. '@/etc/sbtxopts')
+                    Note: "@"-file is overridden by local '.sbtxopts' or '-sbtx-opts' argument.
+  -sbtx-opts <path> file containing sbt-extras args (if not given, .sbtxopts in project root is used if present)
+EOM
+  exit 0
+}
+
+process_args() {
+  require_arg() {
+    local type="$1"
+    local opt="$2"
+    local arg="$3"
+
+    if [[ -z "$arg" ]] || [[ "${arg:0:1}" == "-" ]]; then
+      die "$opt requires <$type> argument"
+    fi
+  }
+  while [[ $# -gt 0 ]]; do
+    case "$1" in
+      -h |   -help) usage ;;
+      -v)           verbose=true && shift ;;
+      -d)           addSbt "--debug" && shift ;;
+      -w)           addSbt "--warn"  && shift ;;
+      -q)           addSbt "--error" && shift ;;
+      -x)           shift ;; # currently unused
+      -trace)       require_arg integer "$1" "$2" && trace_level="$2" && shift 2 ;;
+      -debug-inc)   addJava "-Dxsbt.inc.debug=true" && shift ;;
+
+      -no-colors)   addJava "-Dsbt.log.noformat=true" && addJava "-Dsbt.color=false" && shift ;;
+      -sbt-create)  sbt_create=true && shift ;;
+      -sbt-dir)     require_arg path "$1" "$2" && sbt_dir="$2" && shift 2 ;;
+      -sbt-boot)    require_arg path "$1" "$2" && addJava "-Dsbt.boot.directory=$2" && shift 2 ;;
+      -ivy)         require_arg path "$1" "$2" && addJava "-Dsbt.ivy.home=$2" && shift 2 ;;
+      -no-share)    noshare=true && shift ;;
+      -offline)     addSbt "set offline in Global := true" && shift ;;
+      -jvm-debug)   require_arg port "$1" "$2" && addDebugger "$2" && shift 2 ;;
+      -batch)       batch=true && shift ;;
+      -prompt)      require_arg "expr" "$1" "$2" && setThisBuild shellPrompt "(s => { val e = Project.extract(s) ; $2 })" && shift 2 ;;
+      -script)      require_arg file "$1" "$2" && sbt_script="$2" && addJava "-Dsbt.main.class=sbt.ScriptMain" && shift 2 ;;
+
+      -sbt-version) require_arg version "$1" "$2" && sbt_explicit_version="$2" && shift 2 ;;
+      -sbt-force-latest) sbt_explicit_version="$sbt_release_version" && shift ;;
+      -sbt-dev)     sbt_explicit_version="$sbt_unreleased_version" && shift ;;
+      -sbt-jar)     require_arg path "$1" "$2" && sbt_jar="$2" && shift 2 ;;
+      -sbt-launch-dir) require_arg path "$1" "$2" && sbt_launch_dir="$2" && shift 2 ;;
+      -sbt-launch-repo) require_arg path "$1" "$2" && sbt_launch_repo="$2" && shift 2 ;;
+
+      -28)          setScalaVersion "$latest_28"  && shift ;;
+      -29)          setScalaVersion "$latest_29"  && shift ;;
+      -210)         setScalaVersion "$latest_210" && shift ;;
+      -211)         setScalaVersion "$latest_211" && shift ;;
+      -212)         setScalaVersion "$latest_212" && shift ;;
+      -213)         setScalaVersion "$latest_213" && shift ;;
+
+      -scala-version) require_arg version "$1" "$2" && setScalaVersion "$2" && shift 2 ;;
+      -binary-version) require_arg version "$1" "$2" && setThisBuild scalaBinaryVersion "\"$2\"" && shift 2 ;;
+      -scala-home)  require_arg path "$1" "$2" && setThisBuild scalaHome "_root_.scala.Some(file(\"$2\"))" && shift 2 ;;
+      -java-home)   require_arg path "$1" "$2" && setJavaHome "$2" && shift 2 ;;
+      -sbt-opts)    require_arg path "$1" "$2" && sbt_opts_file="$2" && shift 2 ;;
+      -sbtx-opts) require_arg path "$1" "$2" && sbtx_opts_file="$2" && shift 2 ;;
+      -jvm-opts)    require_arg path "$1" "$2" && jvm_opts_file="$2" && shift 2 ;;
+
+      -D*)          addJava "$1" && shift ;;
+      -J*)          addJava "${1:2}" && shift ;;
+      -S*)          addScalac "${1:2}" && shift ;;
+
+      new)          sbt_new=true && : "${sbt_explicit_version:=$sbt_release_version}" && addResidual "$1" && shift ;;
+
+      *)            addResidual "$1" && shift ;;
+    esac
+  done
+}
+
+# process the direct command line arguments
+process_args "$@"
+
+# skip #-styled comments and blank lines
+readConfigFile() {
+  local end=false
+  until $end; do
+    read -r || end=true
+    [[ $REPLY =~ ^# ]] || [[ -z $REPLY ]] || echo "$REPLY"
+  done <"$1"
+}
+
+# if there are file/environment sbt_opts, process again so we
+# can supply args to this runner
+if [[ -r "$sbt_opts_file" ]]; then
+  vlog "Using sbt options defined in file $sbt_opts_file"
+  while read -r opt; do extra_sbt_opts+=("$opt"); done < <(readConfigFile "$sbt_opts_file")
+elif [[ -n "$SBT_OPTS" && ! ("$SBT_OPTS" =~ ^@.*) ]]; then
+  vlog "Using sbt options defined in variable \$SBT_OPTS"
+  IFS=" " read -r -a extra_sbt_opts <<<"$SBT_OPTS"
+else
+  vlog "No extra sbt options have been defined"
+fi
+
+# if there are file/environment sbtx_opts, process again so we
+# can supply args to this runner
+if [[ -r "$sbtx_opts_file" ]]; then
+  vlog "Using sbt options defined in file $sbtx_opts_file"
+  while read -r opt; do extra_sbt_opts+=("$opt"); done < <(readConfigFile "$sbtx_opts_file")
+elif [[ -n "$SBTX_OPTS" && ! ("$SBTX_OPTS" =~ ^@.*) ]]; then
+  vlog "Using sbt options defined in variable \$SBTX_OPTS"
+  IFS=" " read -r -a extra_sbt_opts <<<"$SBTX_OPTS"
+else
+  vlog "No extra sbt options have been defined"
+fi
+
+[[ -n "${extra_sbt_opts[*]}" ]] && process_args "${extra_sbt_opts[@]}"
+
+# reset "$@" to the residual args
+set -- "${residual_args[@]}"
+argumentCount=$#
+
+# set sbt version
+set_sbt_version
+
+checkJava
+
+# only exists in 0.12+
+setTraceLevel() {
+  case "$sbt_version" in
+    "0.7."* | "0.10."* | "0.11."*) echoerr "Cannot set trace level in sbt version $sbt_version" ;;
+    *)                             setThisBuild traceLevel "$trace_level" ;;
+  esac
+}
+
+# set scalacOptions if we were given any -S opts
+[[ ${#scalac_args[@]} -eq 0 ]] || addSbt "set scalacOptions in ThisBuild += \"${scalac_args[*]}\""
+
+[[ -n "$sbt_explicit_version" && -z "$sbt_new" ]] && addJava "-Dsbt.version=$sbt_explicit_version"
+vlog "Detected sbt version $sbt_version"
+
+if [[ -n "$sbt_script" ]]; then
+  residual_args=("$sbt_script" "${residual_args[@]}")
+else
+  # no args - alert them there's stuff in here
+  ((argumentCount > 0)) || {
+    vlog "Starting $script_name: invoke with -help for other options"
+    residual_args=(shell)
+  }
+fi
+
+# verify this is an sbt dir, -create was given or user attempts to run a scala script
+[[ -r ./build.sbt || -d ./project || -n "$sbt_create" || -n "$sbt_script" || -n "$sbt_new" ]] || {
+  cat <<EOM
+$(pwd) doesn't appear to be an sbt project.
+If you want to start sbt anyway, run:
+  $0 -sbt-create
+
+EOM
+  exit 1
+}
+
+# pick up completion if present; todo
+# shellcheck disable=SC1091
+[[ -r .sbt_completion.sh ]] && source .sbt_completion.sh
+
+# directory to store sbt launchers
+[[ -d "$sbt_launch_dir" ]] || mkdir -p "$sbt_launch_dir"
+[[ -w "$sbt_launch_dir" ]] || sbt_launch_dir="$(mktemp -d -t sbt_extras_launchers.XXXXXX)"
+
+# no jar? download it.
+[[ -r "$sbt_jar" ]] || acquire_sbt_jar || {
+  # still no jar? uh-oh.
+  echo "Could not download and verify the launcher. Obtain the jar manually and place it at $sbt_jar"
+  exit 1
+}
+
+if [[ -n "$noshare" ]]; then
+  for opt in ${noshare_opts}; do
+    addJava "$opt"
+  done
+else
+  case "$sbt_version" in
+    "0.7."* | "0.10."* | "0.11."* | "0.12."*)
+      [[ -n "$sbt_dir" ]] || {
+        sbt_dir="$HOME/.sbt/$sbt_version"
+        vlog "Using $sbt_dir as sbt dir, -sbt-dir to override."
+      }
+      ;;
+  esac
+
+  if [[ -n "$sbt_dir" ]]; then
+    addJava "-Dsbt.global.base=$sbt_dir"
+  fi
+fi
+
+if [[ -r "$jvm_opts_file" ]]; then
+  vlog "Using jvm options defined in file $jvm_opts_file"
+  while read -r opt; do extra_jvm_opts+=("$opt"); done < <(readConfigFile "$jvm_opts_file")
+elif [[ -n "$JVM_OPTS" && ! ("$JVM_OPTS" =~ ^@.*) ]]; then
+  vlog "Using jvm options defined in \$JVM_OPTS variable"
+  IFS=" " read -r -a extra_jvm_opts <<<"$JVM_OPTS"
+else
+  vlog "Using default jvm options"
+  IFS=" " read -r -a extra_jvm_opts <<<"$( default_jvm_opts)"
+fi
+
+# traceLevel is 0.12+
+[[ -n "$trace_level" ]] && setTraceLevel
+
+execRunner "$java_cmd" \
+  "${extra_jvm_opts[@]}" \
+  "${java_args[@]}" \
+  -jar "$sbt_jar" \
+  "${sbt_commands[@]}" \
+  "${residual_args[@]}"