Fix warnings.

Reviewed-on: #1
Co-authored-by: Michael N. Lipp <mnl@mnl.de>
Co-committed-by: Michael N. Lipp <mnl@mnl.de>

.gitlab-ci.yml

@@ -1,78 +0,0 @@
-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

@@ -0,0 +1,38 @@
+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

dev-example/Readme.md

@@ -3,9 +3,9 @@
 The CRD must be deployed independently. Apart from that, the
 `kustomize.yaml`
 
-* creates a small cdrom image repository and
+  * creates a small cdrom image repository and
 
-* deploys the operator in namespace `vmop-dev` with a replica of 0.
+  * deploys the operator in namespace `vmop-dev` with a replica of 0.
 
 This allows you to run the manager in your IDE.
 

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

@@ -0,0 +1,3 @@
+#!/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 tty1
+  # Check if this user is already logged in on tty2
-  curUser=$(loginctl -j | jq -r '.[] | select(.tty=="tty1") | .user')
+  curUser=$(loginctl -j | jq -r '.[] | select(.tty=="tty2") | .user')
   if [ "$curUser" = "$user" ]; then
     echo >&${con} "201 User already logged in"
     return
@@ -96,17 +96,14 @@ doLogin() {
       return
     fi
   fi
-  
+
-  # Start the desktop for the user
+  # Configure user as auto login user
-  systemd-run 2>$temperr \
+  sed -i '/AutomaticLogin/d' /etc/gdm/custom.conf
-    --unit vmop-user-desktop --uid=$uid --gid=$uid \
+  sed -i '/\[daemon\]/a AutomaticLoginEnable=true\nAutomaticLogin='$user \
-    --working-directory="/home/$user" -p TTYPath=/dev/tty1 \
+    /etc/gdm/custom.conf
-    -p PAMName=login -p StandardInput=tty -p StandardOutput=journal \
+
-    -p Conflicts="gdm.service getty@tty1.service" \
+  # Activate user    
-    -E XDG_RUNTIME_DIR="/run/user/$uid" \
+  systemctl restart gdm
-    -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
@@ -117,14 +114,8 @@ doLogin() {
 # Attempt to log out a user currently using tty1. This is an intermediate
 # operation that can be invoked from other operations
 attemptLogout() {
-  systemctl status vmop-user-desktop > /dev/null 2>&1
+  sed -i '/AutomaticLogin/d' /etc/gdm/custom.conf
-  if [ $? = 0 ]; then
+  systemctl stop gdm
-    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"
 }
 
@@ -133,15 +124,7 @@ attemptLogout() {
 # Also try to restart gdm, if it is not running.
 doLogout() {
   attemptLogout
-  systemctl status gdm >/dev/null 2>&1
+  systemctl restart gdm
-  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"
 }
 
@@ -153,7 +136,7 @@ while read line <&${con}; do
 done
 
 onExit() {
-  attemptLogout
+  doLogout
   if [ -n "$temperr" ]; then
     rm -f $temperr
   fi

misc/javadoc.bottom.txt

@@ -32,4 +32,5 @@
     <noscript><p><img referrerpolicy="no-referrer-when-downgrade"
       src="//piwik.mnl.de/matomo.php?idsite=17&amp;rec=1&amp;action_name=VM-Operator" style="border:0;" alt="" /></p></noscript>
     <!-- End Matomo Code -->
+    <script defer src="https://gotit.mnl.de/script.js" data-website-id="14b277ad-d330-4a54-82f1-a77d111240ac"></script>
 </div>

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

@@ -32,13 +32,11 @@ import java.util.regex.Pattern;
 public class Convertions {
 
     @SuppressWarnings({ "PMD.UseConcurrentHashMap",
-        "PMD.FieldNamingConventions", "PMD.VariableNamingConventions" })
+        "PMD.FieldNamingConventions" })
     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*");
 
@@ -69,7 +67,6 @@ 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

@@ -47,8 +47,7 @@ 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 {
 
     /**
@@ -113,7 +112,6 @@ 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

@@ -48,8 +48,7 @@ import okhttp3.Response;
  * A client with some additional properties.
  */
 @SuppressWarnings({ "PMD.ExcessivePublicCount", "PMD.TooManyMethods",
-    "PMD.LinguisticNaming", "checkstyle:LineLength",
+    "checkstyle:LineLength", "PMD.CouplingBetweenObjects", "PMD.GodClass" })
-    "PMD.CouplingBetweenObjects", "PMD.GodClass" })
 public class K8sClient extends ApiClient {
 
     private ApiClient apiClient;
@@ -231,7 +230,6 @@ 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);
@@ -638,7 +636,6 @@ 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);
@@ -651,7 +648,6 @@ 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);
@@ -818,7 +814,7 @@ 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", "PMD.ExcessiveParameterList" })
+    @SuppressWarnings({ "rawtypes" })
     @Override
     public Call buildCall(String path, String method, List<Pair> queryParams,
             List<Pair> collectionQueryParams, Object body,
@@ -847,7 +843,7 @@ 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", "PMD.ExcessiveParameterList" })
+    @SuppressWarnings({ "rawtypes" })
     @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

@@ -45,8 +45,7 @@ import java.util.function.Function;
  * @param <O> the generic type
  * @param <L> the generic type
  */
-@SuppressWarnings({ "PMD.DataflowAnomalyAnalysis",
+@SuppressWarnings({ "PMD.CouplingBetweenObjects" })
-    "PMD.CouplingBetweenObjects" })
 public class K8sClusterGenericStub<O extends KubernetesObject,
         L extends KubernetesListObject> {
     protected final K8sClient client;
@@ -240,6 +239,7 @@ public class K8sClusterGenericStub<O extends KubernetesObject,
      * @param <L> the object list type
      * @param <R> the result type
      */
+    @FunctionalInterface
     public interface GenericSupplier<O extends KubernetesObject,
             L extends KubernetesListObject,
             R extends K8sClusterGenericStub<O, L>> {
@@ -254,7 +254,6 @@ 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);
     }
@@ -283,7 +282,6 @@ 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,
@@ -314,8 +312,6 @@ 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,
@@ -340,8 +336,6 @@ 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

@@ -29,7 +29,6 @@ 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); // NOPMD
+                throw new IllegalArgumentException(exc);
             }
         }
     }

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

@@ -31,7 +31,6 @@ 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> {
 
@@ -64,8 +63,6 @@ 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 {
@@ -83,8 +80,6 @@ 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

@@ -26,7 +26,6 @@ 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> {
 
@@ -40,7 +39,6 @@ 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.DataflowAnomalyAnalysis", "PMD.TooManyMethods" })
+@SuppressWarnings({ "PMD.TooManyMethods" })
 public class K8sGenericStub<O extends KubernetesObject,
         L extends KubernetesListObject> {
     protected final K8sClient client;
@@ -200,7 +200,6 @@ 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));
@@ -218,7 +217,7 @@ 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" })
+    @SuppressWarnings({ "PMD.AssignmentInOperand" })
     public Optional<O> updateStatus(Function<O, Object> updater, O current,
             int retries) throws ApiException {
         while (true) {
@@ -248,7 +247,6 @@ 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);
@@ -359,6 +357,7 @@ public class K8sGenericStub<O extends KubernetesObject,
      * @param <L> the object list type
      * @param <R> the result type
      */
+    @FunctionalInterface
     public interface GenericSupplier<O extends KubernetesObject,
             L extends KubernetesListObject, R extends K8sGenericStub<O, L>> {
 
@@ -370,7 +369,6 @@ public class K8sGenericStub<O extends KubernetesObject,
          * @param name the name
          * @return the result
          */
-        @SuppressWarnings("PMD.UseObjectForClearerAPI")
         R get(K8sClient client, String namespace, String name);
     }
 
@@ -396,8 +394,6 @@ 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

@@ -50,7 +50,6 @@ public class K8sObserver<O extends KubernetesObject,
         ADDED, MODIFIED, DELETED
     }
 
-    @SuppressWarnings("PMD.FieldNamingConventions")
     protected final Logger logger = Logger.getLogger(getClass().getName());
 
     protected final K8sClient client;
@@ -73,8 +72,7 @@ public class K8sObserver<O extends KubernetesObject,
      * @param namespace the namespace
      * @param options the options
      */
-    @SuppressWarnings({ "PMD.AvoidBranchingStatementAsLastInLoop",
+    @SuppressWarnings({ "PMD.AvoidCatchingThrowable",
-        "PMD.UseObjectForClearerAPI", "PMD.AvoidCatchingThrowable",
         "PMD.CognitiveComplexity", "PMD.AvoidCatchingGenericException" })
     public K8sObserver(Class<O> objectClass, Class<L> objectListClass,
             K8sClient client, APIResource context, String namespace,
@@ -100,7 +98,6 @@ 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()) {
@@ -233,7 +230,6 @@ 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

@@ -26,7 +26,6 @@ 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

@@ -29,7 +29,6 @@ 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

@@ -29,7 +29,6 @@ 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"),
@@ -74,8 +73,7 @@ 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

@@ -29,7 +29,6 @@ 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

@@ -29,7 +29,6 @@ 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

@@ -29,7 +29,6 @@ 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

@@ -29,7 +29,6 @@ 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

@@ -26,7 +26,6 @@ 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

@@ -46,11 +46,10 @@ 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({ "PMD.FieldNamingConventions", "unused" })
+    @SuppressWarnings({ "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

@@ -31,7 +31,6 @@ 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> {
 
@@ -64,8 +63,6 @@ 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 {
@@ -83,8 +80,6 @@ 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

@@ -34,7 +34,6 @@ import java.util.logging.Logger;
  */
 public class VmExtraData {
 
-    @SuppressWarnings("PMD.FieldNamingConventions")
     private static final Logger logger
         = Logger.getLogger(VmExtraData.class.getName());
 
@@ -118,14 +117,14 @@ public class VmExtraData {
         if (addr.isEmpty()) {
             logger
                 .severe(() -> "Failed to find display IP for " + vmDef.name());
-            return null;
+            return Optional.empty();
         }
         var port = vmDef.<Number> fromVm("display", "spice", "port")
             .map(Number::longValue);
         if (port.isEmpty()) {
             logger
                 .severe(() -> "No port defined for display of " + vmDef.name());
-            return null;
+            return Optional.empty();
         }
         StringBuffer data = new StringBuffer(100)
             .append("[virt-viewer]\ntype=spice\nhost=")

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

@@ -35,7 +35,6 @@ 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

@@ -24,7 +24,6 @@ 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

@@ -43,7 +43,6 @@ 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

@@ -149,8 +149,6 @@ 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

@@ -24,7 +24,6 @@ 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

@@ -27,7 +27,6 @@ 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

@@ -27,7 +27,6 @@ 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

@@ -24,7 +24,6 @@ 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

@@ -23,7 +23,6 @@ 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

@@ -24,7 +24,6 @@ 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

@@ -28,7 +28,6 @@ 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;
@@ -56,7 +55,6 @@ 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;
@@ -87,7 +85,6 @@ 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

@@ -26,7 +26,6 @@ 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/build.gradle

@@ -17,7 +17,7 @@ dependencies {
     implementation 'org.jgrapes:org.jgrapes.io:[2.12.1,3)'
     implementation 'org.jgrapes:org.jgrapes.http:[3.5.0,4)'
     
-    implementation 'org.jgrapes:org.jgrapes.webconsole.base:[2.2.0,3)'
+    implementation 'org.jgrapes:org.jgrapes.webconsole.base:[2.3.0,3)'
     implementation 'org.jgrapes:org.jgrapes.webconsole.vuejs:[1.8.0,2)'
     implementation 'org.jgrapes:org.jgrapes.webconsole.rbac:[1.4.0,2)'
     implementation 'org.jgrapes:org.jgrapes.webconlet.oidclogin:[1.7.0,2)'

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: ${ cm.spec().runnerTemplate.source }
+      template: ${ 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

@@ -51,7 +51,6 @@ 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 {
 
@@ -181,7 +180,6 @@ 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

@@ -56,7 +56,6 @@ 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());
@@ -81,7 +80,6 @@ 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 {
@@ -98,6 +96,8 @@ import org.yaml.snakeyaml.constructor.SafeConstructor;
         channel.setAssociated(PrevData.class, prevData);
 
         // Combine template and data and parse result
+        logger.fine(() -> "Create/update configmap "
+            + DataPath.<String> get(model, "cr", "name").orElse("unknown"));
         model.put("adjustCloudInitMeta", adjustCloudInitMetaModel);
         prevData.added.put("adjustCloudInitMeta", adjustCloudInitMetaModel);
         var fmTemplate = fmConfig.getTemplate("runnerConfig.ftl.yaml");
@@ -187,7 +187,6 @@ 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

@@ -21,7 +21,6 @@ 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/Controller.java

@@ -50,6 +50,7 @@ import org.jdrupes.vmoperator.manager.events.VmPoolChanged;
 import org.jdrupes.vmoperator.manager.events.VmResourceChanged;
 import org.jgrapes.core.Channel;
 import org.jgrapes.core.Component;
+import org.jgrapes.core.EventPipeline;
 import org.jgrapes.core.annotation.Handler;
 import org.jgrapes.core.events.HandlingError;
 import org.jgrapes.core.events.Start;
@@ -94,7 +95,7 @@ import org.jgrapes.util.events.ConfigurationUpdate;
 public class Controller extends Component {
 
     private String namespace;
-    private final ChannelManager<String, VmChannel, ?> chanMgr;
+    private final ChannelManager<String, VmChannel, EventPipeline> chanMgr;
 
     /**
      * Creates a new instance.
@@ -182,7 +183,7 @@ public class Controller extends Component {
             fire(new Exit(2));
             return;
         }
-        logger.fine(() -> "Controlling namespace \"" + namespace + "\".");
+        logger.config(() -> "Controlling namespace \"" + namespace + "\".");
     }
 
     /**

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

@@ -42,7 +42,6 @@ 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

@@ -66,7 +66,6 @@ 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());
@@ -104,12 +103,15 @@ public class DisplaySecretReconciler extends Component {
                 return oldConfig;
             }).ifPresent(c -> {
                 try {
-                    if (c.containsKey("passwordValidity")) {
+                    Optional.ofNullable(c.get("passwordValidity"))
-                        passwordValidity = Integer
+                        .map(p -> p instanceof Integer ? (Integer) p
-                            .parseInt((String) c.get("passwordValidity"));
+                            : Integer.valueOf((String) p))
-                    }
+                        .ifPresent(p -> {
-                } catch (ClassCastException e) {
+                            passwordValidity = p;
-                    logger.config("Malformed configuration: " + e.getMessage());
+                        });
+                } catch (NumberFormatException e) {
+                    logger.warning(
+                        () -> "Malformed configuration: " + e.getMessage());
                 }
             });
     }
@@ -155,9 +157,11 @@ public class DisplaySecretReconciler extends Component {
         }
 
         // Create secret
+        var secretName = vmDef.name() + "-" + DisplaySecret.NAME;
+        logger.fine(() -> "Create/update secret " + secretName);
         var secret = new V1Secret();
         secret.setMetadata(new V1ObjectMeta().namespace(vmDef.namespace())
-            .name(vmDef.name() + "-" + DisplaySecret.NAME)
+            .name(secretName)
             .putLabelsItem("app.kubernetes.io/name", APP_NAME)
             .putLabelsItem("app.kubernetes.io/component", DisplaySecret.NAME)
             .putLabelsItem("app.kubernetes.io/instance", vmDef.name()));
@@ -188,7 +192,6 @@ 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
@@ -317,7 +320,6 @@ 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

@@ -36,6 +36,7 @@ import java.util.logging.Logger;
 import org.jdrupes.vmoperator.common.K8sV1ServiceStub;
 import org.jdrupes.vmoperator.common.VmDefinition;
 import org.jdrupes.vmoperator.manager.events.VmChannel;
+import org.jdrupes.vmoperator.util.DataPath;
 import org.jdrupes.vmoperator.util.GsonPtr;
 import org.yaml.snakeyaml.LoaderOptions;
 import org.yaml.snakeyaml.Yaml;
@@ -44,7 +45,6 @@ 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 +85,7 @@ import org.yaml.snakeyaml.constructor.SafeConstructor;
         }
 
         // Check if to be generated
-        @SuppressWarnings({ "PMD.AvoidDuplicateLiterals", "unchecked" })
+        @SuppressWarnings({ "unchecked" })
         var lbsDef = Optional.of(model)
             .map(m -> (Map<String, Object>) m.get("reconciler"))
             .map(c -> c.get(LOAD_BALANCER_SERVICE)).orElse(Boolean.FALSE);
@@ -107,6 +107,8 @@ import org.yaml.snakeyaml.constructor.SafeConstructor;
         }
 
         // Combine template and data and parse result
+        logger.fine(() -> "Create/update load balancer service for "
+            + DataPath.<String> get(model, "cr", "name").orElse("unknown"));
         var fmTemplate = fmConfig.getTemplate("runnerLoadBalancer.ftl.yaml");
         StringWriter out = new StringWriter();
         fmTemplate.process(model, out);

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.DataflowAnomalyAnalysis", "PMD.ExcessiveImports" })
+@SuppressWarnings({ "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.TooFewBranchesForASwitchStatement",
+    @SuppressWarnings({ "PMD.NcssCount",
-        "PMD.NcssCount", "PMD.ConstructorCallsOverridableMethod" })
+        "PMD.ConstructorCallsOverridableMethod" })
     public Manager(CommandLine cmdLine) throws IOException, URISyntaxException {
         super(new NamedChannel("manager"));
         // Prepare component tree
@@ -217,7 +217,6 @@ 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")) {
@@ -264,7 +263,7 @@ public class Manager extends Component {
      */
     @Handler(priority = -1000)
     public void onStop(Stop event) {
-        logger.fine(() -> "Application stopped.");
+        logger.info(() -> "Application stopped.");
     }
 
     static {
@@ -291,7 +290,6 @@ 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

@@ -43,7 +43,6 @@ 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

@@ -53,7 +53,6 @@ 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

@@ -49,7 +49,6 @@ 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());
@@ -75,7 +74,7 @@ import org.yaml.snakeyaml.constructor.SafeConstructor;
      * @throws TemplateException the template exception
      * @throws ApiException the api exception
      */
-    @SuppressWarnings({ "PMD.AvoidDuplicateLiterals", "unchecked" })
+    @SuppressWarnings({ "unchecked" })
     public void reconcile(VmDefinition vmDef, Map<String, Object> model,
             VmChannel channel, boolean specChanged)
             throws IOException, TemplateException, ApiException {
@@ -139,6 +138,7 @@ import org.yaml.snakeyaml.constructor.SafeConstructor;
 
         // Generate PVC
         var runnerDataPvcName = vmDef.name() + "-runner-data";
+        logger.fine(() -> "Create/update pvc " + runnerDataPvcName);
         model.put("runnerDataPvcName", runnerDataPvcName);
         if (!specChanged) {
             // Augmenting the model is all we have to do
@@ -180,6 +180,7 @@ import org.yaml.snakeyaml.constructor.SafeConstructor;
         }
 
         // Generate PVC
+        logger.fine(() -> "Create/update pvc " + pvcName);
         model.put("disk", diskDef);
         var fmTemplate = fmConfig.getTemplate("runnerDiskPvc.ftl.yaml");
         StringWriter out = new StringWriter();

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

@@ -137,15 +137,13 @@ import org.jgrapes.util.events.ConfigurationUpdate;
  *   
  * @see org.jdrupes.vmoperator.manager.DisplaySecretReconciler
  */
-@SuppressWarnings({ "PMD.DataflowAnomalyAnalysis",
+@SuppressWarnings({ "PMD.AvoidDuplicateLiterals" })
-    "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;
@@ -203,7 +201,6 @@ 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
@@ -338,7 +335,6 @@ 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);
@@ -368,8 +364,7 @@ public class Reconciler extends Component {
     private final TemplateMethodModelEx imgageLocationModel
         = new TemplateMethodModelEx() {
             @Override
-            @SuppressWarnings({ "PMD.PreserveStackTrace",
+            @SuppressWarnings({ "PMD.AvoidLiteralsInIfCondition" })
-                "PMD.AvoidLiteralsInIfCondition" })
             public Object exec(@SuppressWarnings("rawtypes") List arguments)
                     throws TemplateModelException {
                 var image = ((SimpleScalar) arguments.get(0)).getAsString();
@@ -394,7 +389,6 @@ 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

@@ -22,7 +22,6 @@ import com.google.gson.JsonObject;
 import io.kubernetes.client.apimachinery.GroupVersionKind;
 import io.kubernetes.client.custom.V1Patch;
 import io.kubernetes.client.openapi.ApiException;
-import io.kubernetes.client.openapi.models.V1ObjectMeta;
 import io.kubernetes.client.util.Watch;
 import io.kubernetes.client.util.generic.options.ListOptions;
 import java.io.IOException;
@@ -32,7 +31,6 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Optional;
 import java.util.Set;
-import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.stream.Collectors;
 import org.jdrupes.vmoperator.common.Constants.Crd;
 import org.jdrupes.vmoperator.common.Constants.Status;
@@ -57,16 +55,27 @@ import org.jdrupes.vmoperator.manager.events.VmResourceChanged;
 import org.jdrupes.vmoperator.util.GsonPtr;
 import org.jgrapes.core.Channel;
 import org.jgrapes.core.Event;
+import org.jgrapes.core.EventPipeline;
 import org.jgrapes.core.annotation.Handler;
 
 /**
- * Watches for changes of VM definitions.
+ * Watches for changes of VM definitions. When a VM definition (CR)
+ * becomes known, is is registered with a {@link ChannelManager} and thus
+ * gets an associated {@link VmChannel} and an associated
+ * {@link EventPipeline}.
+ * 
+ * The {@link EventPipeline} is used for submitting an action that processes
+ * the change data from kubernetes, eventually transforming it to a
+ * {@link VmResourceChanged} event that is handled by another
+ * {@link EventPipeline} associated with the {@link VmChannel}. This
+ * 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> {
 
-    private final ChannelManager<String, VmChannel, ?> channelManager;
+    private final ChannelManager<String, VmChannel,
+            EventPipeline> channelManager;
 
     /**
      * Instantiates a new VM definition watcher.
@@ -75,7 +84,7 @@ public class VmMonitor extends
      * @param channelManager the channel manager
      */
     public VmMonitor(Channel componentChannel,
-            ChannelManager<String, VmChannel, ?> channelManager) {
+            ChannelManager<String, VmChannel, EventPipeline> channelManager) {
         super(componentChannel, VmDefinition.class,
             VmDefinitions.class);
         this.channelManager = channelManager;
@@ -97,7 +106,6 @@ public class VmMonitor extends
         purge();
     }
 
-    @SuppressWarnings("PMD.CognitiveComplexity")
     private void purge() throws ApiException {
         // Get existing CRs (VMs)
         var known = K8sDynamicStub.list(client(), context(), namespace())
@@ -122,14 +130,18 @@ public class VmMonitor extends
     @Override
     protected void handleChange(K8sClient client,
             Watch.Response<VmDefinition> response) {
-        V1ObjectMeta metadata = response.object.getMetadata();
+        var name = response.object.getMetadata().getName();
-        AtomicBoolean toBeAdded = new AtomicBoolean(false);
-        VmChannel channel = channelManager.channel(metadata.getName())
-            .orElseGet(() -> {
-                toBeAdded.set(true);
-                return channelManager.createChannel(metadata.getName());
-            });
 
+        // Process the response data on a VM specific pipeline to
+        // increase concurrency when e.g. starting many VMs.
+        var preparing = channelManager.associated(name)
+            .orElseGet(() -> newEventPipeline());
+        preparing.submit("VmChange[" + name + "]",
+            () -> processChange(client, response, preparing));
+    }
+
+    private void processChange(K8sClient client,
+            Watch.Response<VmDefinition> response, EventPipeline preparing) {
         // Get full definition and associate with channel as backup
         var vmDef = response.object;
         if (vmDef.data() == null) {
@@ -137,6 +149,9 @@ public class VmMonitor extends
             // https://github.com/kubernetes-client/java/issues/3215
             vmDef = getModel(client, vmDef);
         }
+        var name = response.object.getMetadata().getName();
+        var channel = channelManager.channel(name)
+            .orElseGet(() -> channelManager.createChannel(name));
         if (vmDef.data() != null) {
             // New data, augment and save
             addExtraData(vmDef, channel.vmDefinition());
@@ -150,9 +165,7 @@ public class VmMonitor extends
                 + response.object.getMetadata());
             return;
         }
-        if (toBeAdded.get()) {
+        channelManager.put(name, channel, preparing);
-            channelManager.put(vmDef.name(), channel);
-        }
 
         // Create and fire changed event. Remove channel from channel
         // manager on completion.
@@ -177,7 +190,6 @@ 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);
@@ -199,9 +211,16 @@ public class VmMonitor extends
     @Handler
     public void onPodChanged(PodChanged event, VmChannel channel) {
         var vmDef = channel.vmDefinition();
-        updateNodeInfo(event, vmDef);
+
-        channel
+        // Make sure that this is properly sync'd with VM CR changes.
-            .fire(new VmResourceChanged(ResponseType.MODIFIED, vmDef, false, true));
+        channelManager.associated(vmDef.name())
+            .orElseGet(() -> activeEventPipeline())
+            .submit("NodeInfo[" + vmDef.name() + "]",
+                () -> {
+                    updateNodeInfo(event, vmDef);
+                    channel.fire(new VmResourceChanged(ResponseType.MODIFIED,
+                        vmDef, false, true));
+                });
     }
 
     private void updateNodeInfo(PodChanged event, VmDefinition vmDef) {
@@ -219,7 +238,6 @@ 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.manager/src/org/jdrupes/vmoperator/manager/package-info.java

@@ -1,6 +1,6 @@
 /*
  * VM-Operator
- * Copyright (C) 2023 Michael N. Lipp
+ * Copyright (C) 2023,2025 Michael N. Lipp
  * 
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
@@ -83,8 +83,18 @@
  * [YamlConfigurationStore] *-right[hidden]- [Controller]
  *
  * [Manager] *-- [Controller]
- * [Controller] *-- [VmWatcher]
+ * Component VmMonitor as VmMonitor <<internal>>
- * [Controller] *-- [Reconciler]
+ * [Controller] *-- [VmMonitor]
+ * [VmMonitor] -right[hidden]- [PoolMonitor]
+ * Component PoolMonitor as PoolMonitor <<internal>>
+ * [Controller] *-- [PoolMonitor]
+ * Component PodMonitor as PodMonitor <<internal>>
+ * [Controller] *-- [PodMonitor]
+ * [PodMonitor] -up[hidden]- VmMonitor
+ * Component DisplaySecretMonitor as DisplaySecretMonitor <<internal>>
+ * [Controller] *-- [DisplaySecretMonitor]
+ * [DisplaySecretMonitor] -up[hidden]- VmMonitor
+ * [Controller] *-left- [Reconciler]
  * [Controller] -right[hidden]- [GuiHttpServer]
  * 
  * [Manager] *-down- [GuiSocketServer:8080]

org.jdrupes.vmoperator.manager/test-resources/basic-vm.yaml

@@ -1,8 +1,8 @@
 apiVersion: "vmoperator.jdrupes.org/v1"
 kind: VirtualMachine
 metadata:
-  namespace: vmop-dev
+  namespace: vmop-test
-  name: unittest-vm
+  name: test-vm
 spec:
   image:
     repository: docker-registry.lan.mnl.de

org.jdrupes.vmoperator.manager/test-resources/kustomization.yaml

@@ -0,0 +1,111 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+- ../../deploy
+
+namespace: vmop-test
+
+patches:
+- patch: |-
+    kind: PersistentVolumeClaim
+    apiVersion: v1
+    metadata:
+      name: vmop-image-repository
+    spec:
+      accessModes:
+      - ReadWriteOnce
+      resources:
+        requests:
+          storage: 10Gi
+      storageClassName: local-path
+
+- patch: |-
+    kind: ConfigMap
+    apiVersion: v1
+    metadata:
+      name: vm-operator
+    data:
+      # Keep in sync with config.yaml
+      config.yaml: |
+        "/Manager":
+          # clusterName: "test"
+          "/Controller":
+            "/Reconciler":
+              runnerData:
+                storageClassName: null
+              loadBalancerService:
+                labels:
+                  label1: label1
+                  label2: toBeReplaced
+                annotations:
+                  metallb.universe.tf/loadBalancerIPs: 192.168.168.1
+                  metallb.universe.tf/ip-allocated-from-pool: single-common
+                  metallb.universe.tf/allow-shared-ip: single-common
+          "/GuiSocketServer":
+            port: 8888
+          "/GuiHttpServer":
+            # This configures the GUI
+            "/ConsoleWeblet":
+              "/WebConsole":
+                "/LoginConlet":
+                  users:
+                  - name: admin
+                    fullName: Administrator
+                    password: "$2b$05$NiBd74ZGdplLC63ePZf1f.UtjMKkbQ23cQoO2OKOFalDBHWAOy21."
+                  - name: test1
+                    fullName: Test Account
+                    password: "$2b$05$hZaI/jToXf/d3BctZdT38Or7H7h6Pn2W3WiB49p5AyhDHFkkYCvo2"
+                  - name: test2
+                    fullName: Test Account
+                    password: "$2b$05$hZaI/jToXf/d3BctZdT38Or7H7h6Pn2W3WiB49p5AyhDHFkkYCvo2"
+                  - name: test3
+                    fullName: Test Account
+                    password: "$2b$05$hZaI/jToXf/d3BctZdT38Or7H7h6Pn2W3WiB49p5AyhDHFkkYCvo2"
+                "/RoleConfigurator":
+                  rolesByUser:
+                    # User admin has role admin
+                    admin:
+                    - admin
+                    test1:
+                    - user
+                    test2:
+                    - user
+                    test3:
+                    - user
+                    # All users have role other
+                    "*":
+                    - other
+                  replace: false
+                "/RoleConletFilter":
+                  conletTypesByRole:
+                    # Admins can use all conlets
+                    admin:
+                    - "*"
+                    user:
+                    - org.jdrupes.vmoperator.vmviewer.VmViewer
+                    # Others cannot use any conlet (except login conlet to log out)
+                    other:
+                    - org.jgrapes.webconlet.locallogin.LoginConlet
+                "/ComponentCollector":
+                  "/VmAccess":
+                    displayResource:
+                      preferredIpVersion: ipv4
+                    syncPreviewsFor:
+                    - role: user
+- target:
+    group: apps
+    version: v1
+    kind: Deployment
+    name: vm-operator
+  patch: |-
+    - op: replace
+      path: /spec/template/spec/containers/0/image
+      value: docker-registry.lan.mnl.de/vmoperator/org.jdrupes.vmoperator.manager:test
+    - op: replace
+      path: /spec/template/spec/containers/0/imagePullPolicy
+      value: Always
+    - op: replace
+      path: /spec/replicas
+      value: 0
+      

org.jdrupes.vmoperator.manager/test/org/jdrupes/vmoperator/manager/BasicTests.java

@@ -41,7 +41,7 @@ class BasicTests {
     private static APIResource vmsContext;
     private static K8sV1DeploymentStub mgrDeployment;
     private static K8sDynamicStub vmStub;
-    private static final String VM_NAME = "unittest-vm";
+    private static final String VM_NAME = "test-vm";
     private static final Object EXISTS = new Object();
 
     @BeforeAll
@@ -54,7 +54,7 @@ class BasicTests {
 
         // Update manager pod by scaling deployment
         mgrDeployment
-            = K8sV1DeploymentStub.get(client, "vmop-dev", "vm-operator");
+            = K8sV1DeploymentStub.get(client, "vmop-test", "vm-operator");
         mgrDeployment.scale(0);
         mgrDeployment.scale(1);
         waitForManager();
@@ -65,13 +65,13 @@ class BasicTests {
         vmsContext = apiRes.get();
 
         // Cleanup existing VM
-        K8sDynamicStub.get(client, vmsContext, "vmop-dev", VM_NAME)
+        K8sDynamicStub.get(client, vmsContext, "vmop-test", VM_NAME)
             .delete();
         ListOptions listOpts = new ListOptions();
         listOpts.setLabelSelector("app.kubernetes.io/name=" + APP_NAME + ","
             + "app.kubernetes.io/instance=" + VM_NAME + ","
             + "app.kubernetes.io/component=" + DisplaySecret.NAME);
-        var secrets = K8sV1SecretStub.list(client, "vmop-dev", listOpts);
+        var secrets = K8sV1SecretStub.list(client, "vmop-test", listOpts);
         for (var secret : secrets) {
             secret.delete();
         }
@@ -103,7 +103,7 @@ class BasicTests {
             "app.kubernetes.io/managed-by=" + VM_OP_NAME + ","
                 + "app.kubernetes.io/name=" + APP_NAME + ","
                 + "app.kubernetes.io/instance=" + VM_NAME);
-        var knownPvcs = K8sV1PvcStub.list(client, "vmop-dev", listOpts);
+        var knownPvcs = K8sV1PvcStub.list(client, "vmop-test", listOpts);
         for (var pvc : knownPvcs) {
             pvc.delete();
         }
@@ -112,7 +112,7 @@ class BasicTests {
     @AfterAll
     static void tearDownAfterClass() throws Exception {
         // Cleanup
-        K8sDynamicStub.get(client, vmsContext, "vmop-dev", VM_NAME)
+        K8sDynamicStub.get(client, vmsContext, "vmop-test", VM_NAME)
             .delete();
         deletePvcs();
 
@@ -124,7 +124,7 @@ class BasicTests {
     void testConfigMap()
             throws IOException, InterruptedException, ApiException {
         K8sV1ConfigMapStub stub
-            = K8sV1ConfigMapStub.get(client, "vmop-dev", VM_NAME);
+            = K8sV1ConfigMapStub.get(client, "vmop-test", VM_NAME);
         for (int i = 0; i < 10; i++) {
             if (stub.model().isPresent()) {
                 break;
@@ -134,7 +134,7 @@ class BasicTests {
         // Check config map
         var config = stub.model().get();
         Map<List<? extends Object>, Object> toCheck = Map.of(
-            List.of("namespace"), "vmop-dev",
+            List.of("namespace"), "vmop-test",
             List.of("name"), VM_NAME,
             List.of("labels", "app.kubernetes.io/name"), Constants.APP_NAME,
             List.of("labels", "app.kubernetes.io/instance"), VM_NAME,
@@ -191,7 +191,7 @@ class BasicTests {
             + "app.kubernetes.io/component=" + DisplaySecret.NAME);
         Collection<K8sV1SecretStub> secrets = null;
         for (int i = 0; i < 10; i++) {
-            secrets = K8sV1SecretStub.list(client, "vmop-dev", listOpts);
+            secrets = K8sV1SecretStub.list(client, "vmop-test", listOpts);
             if (secrets.size() > 0) {
                 break;
             }
@@ -207,7 +207,7 @@ class BasicTests {
     @Test
     void testRunnerPvc() throws ApiException, InterruptedException {
         var stub
-            = K8sV1PvcStub.get(client, "vmop-dev", VM_NAME + "-runner-data");
+            = K8sV1PvcStub.get(client, "vmop-test", VM_NAME + "-runner-data");
         for (int i = 0; i < 10; i++) {
             if (stub.model().isPresent()) {
                 break;
@@ -227,7 +227,7 @@ class BasicTests {
     @Test
     void testSystemDiskPvc() throws ApiException, InterruptedException {
         var stub
-            = K8sV1PvcStub.get(client, "vmop-dev", VM_NAME + "-system-disk");
+            = K8sV1PvcStub.get(client, "vmop-test", VM_NAME + "-system-disk");
         for (int i = 0; i < 10; i++) {
             if (stub.model().isPresent()) {
                 break;
@@ -248,7 +248,7 @@ class BasicTests {
     @Test
     void testDisk1Pvc() throws ApiException, InterruptedException {
         var stub
-            = K8sV1PvcStub.get(client, "vmop-dev", VM_NAME + "-disk-1");
+            = K8sV1PvcStub.get(client, "vmop-test", VM_NAME + "-disk-1");
         for (int i = 0; i < 10; i++) {
             if (stub.model().isPresent()) {
                 break;
@@ -274,7 +274,7 @@ class BasicTests {
             new V1Patch("[{\"op\": \"replace\", \"path\": \"/spec/vm/state"
                 + "\", \"value\": \"Running\"}]"),
             client.defaultPatchOptions()).isPresent());
-        var stub = K8sV1PodStub.get(client, "vmop-dev", VM_NAME);
+        var stub = K8sV1PodStub.get(client, "vmop-test", VM_NAME);
         for (int i = 0; i < 20; i++) {
             if (stub.model().isPresent()) {
                 break;
@@ -303,7 +303,7 @@ class BasicTests {
 
     @Test
     public void testLoadBalancer() throws ApiException, InterruptedException {
-        var stub = K8sV1ServiceStub.get(client, "vmop-dev", VM_NAME);
+        var stub = K8sV1ServiceStub.get(client, "vmop-test", VM_NAME);
         for (int i = 0; i < 10; i++) {
             if (stub.model().isPresent()) {
                 break;

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

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

@@ -39,11 +39,9 @@ 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. */
@@ -95,15 +93,12 @@ 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;
     }
 
@@ -299,7 +294,6 @@ 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
@@ -319,7 +313,6 @@ public class Configuration implements Dto {
         }
     }
 
-    @SuppressWarnings("PMD.AvoidDeeplyNestedIfStmts")
     private boolean checkRuntimeDir() {
         // Runtime directory (sockets etc.)
         if (runtimeDir == null) {
@@ -355,7 +348,6 @@ 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

@@ -41,7 +41,6 @@ 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;
@@ -53,7 +52,6 @@ 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
@@ -91,8 +89,7 @@ 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) {
@@ -127,7 +124,6 @@ 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

@@ -21,7 +21,6 @@ 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

@@ -41,7 +41,6 @@ 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

@@ -43,7 +43,6 @@ import org.jgrapes.util.events.WatchFile;
 /**
  * The Class DisplayController.
  */
-@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
 public class DisplayController extends Component {
 
     private String currentPassword;
@@ -59,8 +58,7 @@ public class DisplayController extends Component {
      * @param componentChannel the component channel
      * @param configDir 
      */
-    @SuppressWarnings({ "PMD.AssignmentToNonFinalStatic",
+    @SuppressWarnings({ "PMD.ConstructorCallsOverridableMethod" })
-        "PMD.ConstructorCallsOverridableMethod" })
     public DisplayController(Channel componentChannel, Path configDir) {
         super(componentChannel);
         this.configDir = configDir;
@@ -114,7 +112,6 @@ 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/GuestAgentClient.java

@@ -69,14 +69,14 @@ public class GuestAgentClient extends AgentConnector {
      */
     @Override
     protected void agentConnected() {
-        logger.fine(() -> "guest agent connected");
+        logger.fine(() -> "Guest agent connected");
         connected = true;
         rep().fire(new GuestAgentCommand(new QmpGuestGetOsinfo()));
     }
 
     @Override
     protected void agentDisconnected() {
-        logger.fine(() -> "guest agent disconnected");
+        logger.fine(() -> "Guest agent disconnected");
         connected = false;
     }
 
@@ -88,15 +88,16 @@ public class GuestAgentClient extends AgentConnector {
      */
     @Override
     protected void processInput(String line) throws IOException {
-        logger.fine(() -> "guest agent(in): " + line);
+        logger.finer(() -> "guest agent(in): " + line);
         try {
             var response = mapper.readValue(line, ObjectNode.class);
             if (response.has("return") || response.has("error")) {
                 QmpCommand executed = executing.poll();
-                logger.fine(() -> String.format("(Previous \"guest agent(in)\""
+                logger.finer(() -> String.format("(Previous \"guest agent(in)\""
                     + " is result from executing %s)", executed));
                 if (executed instanceof QmpGuestGetOsinfo) {
                     var osInfo = new OsinfoEvent(response.get("return"));
+                    logger.fine(() -> "Guest agent triggers: " + osInfo);
                     rep().fire(osInfo);
                 }
             }
@@ -120,10 +121,11 @@ public class GuestAgentClient extends AgentConnector {
             return;
         }
         var command = event.command();
-        logger.fine(() -> "guest agent(out): " + command.toString());
+        logger.fine(() -> "Guest handles: " + event);
         String asText;
         try {
             asText = command.asText();
+            logger.finer(() -> "guest agent(out): " + asText);
         } catch (JsonProcessingException e) {
             logger.log(Level.SEVERE, e,
                 () -> "Cannot serialize Json: " + e.getMessage());
@@ -163,8 +165,8 @@ public class GuestAgentClient extends AgentConnector {
         }
         event.suspendHandling();
         suspendedStop = event;
-        logger.fine(() -> "Sending powerdown command, waiting for"
+        logger.fine(() -> "Attempting shutdown through guest agent,"
-            + " termination until " + waitUntil);
+            + " waiting for termination until " + waitUntil);
         powerdownTimer = Components.schedule(t -> {
             logger.fine(() -> "Powerdown timeout reached.");
             synchronized (this) {

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

@@ -54,7 +54,6 @@ 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;
@@ -72,8 +71,6 @@ 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);
@@ -108,24 +105,30 @@ public class QemuMonitor extends QemuConnector {
     @Override
     protected void processInput(String line)
             throws IOException {
-        logger.fine(() -> "monitor(in): " + line);
+        logger.finer(() -> "monitor(in): " + line);
         try {
             var response = mapper.readValue(line, ObjectNode.class);
             if (response.has("QMP")) {
                 monitorReady = true;
+                logger.fine(() -> "QMP connection ready");
                 rep().fire(new MonitorReady());
                 return;
             }
             if (response.has("return") || response.has("error")) {
                 QmpCommand executed = executing.poll();
-                logger.fine(
+                logger.finer(
                     () -> String.format("(Previous \"monitor(in)\" is result "
                         + "from executing %s)", executed));
-                rep().fire(MonitorResult.from(executed, response));
+                var monRes = MonitorResult.from(executed, response);
+                logger.fine(() -> "QMP triggers: " + monRes);
+                rep().fire(monRes);
                 return;
             }
             if (response.has("event")) {
-                MonitorEvent.from(response).ifPresent(rep()::fire);
+                MonitorEvent.from(response).ifPresent(me -> {
+                    logger.fine(() -> "QMP triggers: " + me);
+                    rep().fire(me);
+                });
             }
         } catch (JsonProcessingException e) {
             throw new IOException(e);
@@ -141,7 +144,7 @@ public class QemuMonitor extends QemuConnector {
     public void onClosed(Closed<?> event, SocketIOChannel channel) {
         channel.associated(this, getClass()).ifPresent(qm -> {
             super.onClosed(event, channel);
-            logger.finer(() -> "QMP socket closed.");
+            logger.fine(() -> "QMP connection closed.");
             monitorReady = false;
         });
     }
@@ -158,7 +161,7 @@ public class QemuMonitor extends QemuConnector {
     public void onMonitorCommand(MonitorCommand event) throws IOException {
         // Check prerequisites
         if (!monitorReady && !(event.command() instanceof QmpCapabilities)) {
-            logger.severe(() -> "Premature monitor command (not ready): "
+            logger.severe(() -> "Premature QMP command (not ready): "
                 + event.command());
             rep().fire(new Stop());
             return;
@@ -166,10 +169,11 @@ public class QemuMonitor extends QemuConnector {
 
         // Send the command
         var command = event.command();
-        logger.fine(() -> "monitor(out): " + command.toString());
+        logger.fine(() -> "QMP handles: " + event.toString());
         String asText;
         try {
             asText = command.asText();
+            logger.finer(() -> "monitor(out): " + asText);
         } catch (JsonProcessingException e) {
             logger.log(Level.SEVERE, e,
                 () -> "Cannot serialize Json: " + e.getMessage());
@@ -192,8 +196,8 @@ public class QemuMonitor extends QemuConnector {
     @SuppressWarnings("PMD.AvoidSynchronizedStatement")
     public void onStop(Stop event) {
         if (!monitorReady) {
-            logger.fine(() -> "No QMP connection,"
+            logger.fine(() -> "Not sending QMP powerdown command"
-                + " cannot send powerdown command");
+                + " because QMP connection is closed");
             return;
         }
 

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

@@ -39,7 +39,6 @@ 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

@@ -157,6 +157,15 @@ import org.jgrapes.util.events.WatchFile;
  * 
  * success --> Running
  * 
+ * state Running {
+ *     state Booting
+ *     state Booted
+ *     
+ *     [*] -right-> Booting
+ *     Booting -down-> Booting: VserportChanged[guest agent connected]/fire GetOsinfo
+ *     Booting --> Booted: Osinfo
+ * }
+ * 
  * state Terminating {
  *     state terminate <<entryPoint>>
  *     state qemuRunning <<choice>>
@@ -192,8 +201,7 @@ import org.jgrapes.util.events.WatchFile;
  * 
  */
 @SuppressWarnings({ "PMD.ExcessiveImports", "PMD.AvoidPrintStackTrace",
-    "PMD.DataflowAnomalyAnalysis", "PMD.TooManyMethods",
+    "PMD.TooManyMethods", "PMD.CouplingBetweenObjects" })
-    "PMD.CouplingBetweenObjects", "PMD.TooManyFields" })
 public class Runner extends Component {
 
     private static final String TEMPLATE_DIR
@@ -209,7 +217,6 @@ 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;
@@ -241,8 +248,7 @@ public class Runner extends Component {
      * @param cmdLine the cmd line
      * @throws IOException Signals that an I/O exception has occurred.
      */
-    @SuppressWarnings({ "PMD.SystemPrintln",
+    @SuppressWarnings({ "PMD.ConstructorCallsOverridableMethod" })
-        "PMD.ConstructorCallsOverridableMethod" })
     public Runner(CommandLine cmdLine) throws IOException {
         yamlMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES,
             false);
@@ -378,8 +384,6 @@ 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
@@ -611,8 +615,6 @@ 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)
@@ -769,7 +771,6 @@ 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

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

@@ -43,7 +43,6 @@ 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

@@ -59,10 +59,14 @@ public class VmopAgentClient extends AgentConnector {
      */
     @Handler
     public void onVmopAgentLogIn(VmopAgentLogIn event) throws IOException {
-        logger.fine(() -> "vmop agent(out): login " + event.user());
         if (writer().isPresent()) {
+            logger.fine(() -> "Vmop agent handles:" + event);
             executing.add(event);
+            logger.finer(() -> "vmop agent(out): login " + event.user());
             sendCommand("login " + event.user());
+        } else {
+            logger
+                .warning(() -> "No vmop agent connection for sending " + event);
         }
     }
 
@@ -74,34 +78,38 @@ public class VmopAgentClient extends AgentConnector {
      */
     @Handler
     public void onVmopAgentLogout(VmopAgentLogOut event) throws IOException {
-        logger.fine(() -> "vmop agent(out): logout");
         if (writer().isPresent()) {
+            logger.fine(() -> "Vmop agent handles:" + event);
             executing.add(event);
+            logger.finer(() -> "vmop agent(out): logout");
             sendCommand("logout");
         }
     }
 
     @Override
-    @SuppressWarnings({ "PMD.UnnecessaryReturn",
+    @SuppressWarnings({ "PMD.AvoidLiteralsInIfCondition" })
-        "PMD.AvoidLiteralsInIfCondition" })
     protected void processInput(String line) throws IOException {
-        logger.fine(() -> "vmop agent(in): " + line);
+        logger.finer(() -> "vmop agent(in): " + line);
 
         // Check validity
         if (line.isEmpty() || !Character.isDigit(line.charAt(0))) {
-            logger.warning(() -> "Illegal response: " + line);
+            logger.warning(() -> "Illegal vmop agent response: " + line);
             return;
         }
 
         // Check positive responses
         if (line.startsWith("220 ")) {
-            rep().fire(new VmopAgentConnected());
+            var evt = new VmopAgentConnected();
+            logger.fine(() -> "Vmop agent triggers " + evt);
+            rep().fire(evt);
             return;
         }
         if (line.startsWith("201 ")) {
             Event<?> cmd = executing.pop();
             if (cmd instanceof VmopAgentLogIn login) {
-                rep().fire(new VmopAgentLoggedIn(login));
+                var evt = new VmopAgentLoggedIn(login);
+                logger.fine(() -> "Vmop agent triggers " + evt);
+                rep().fire(evt);
             } else {
                 logger.severe(() -> "Response " + line
                     + " does not match executing command " + cmd);
@@ -111,7 +119,9 @@ public class VmopAgentClient extends AgentConnector {
         if (line.startsWith("202 ")) {
             Event<?> cmd = executing.pop();
             if (cmd instanceof VmopAgentLogOut logout) {
-                rep().fire(new VmopAgentLoggedOut(logout));
+                var evt = new VmopAgentLoggedOut(logout);
+                logger.fine(() -> "Vmop agent triggers " + evt);
+                rep().fire(evt);
             } else {
                 logger.severe(() -> "Response " + line
                     + "does not match executing command " + cmd);
@@ -125,7 +135,7 @@ public class VmopAgentClient extends AgentConnector {
         }
 
         // Error
-        logger.warning(() -> "Error response: " + line);
+        logger.warning(() -> "Error response from vmop agent: " + line);
         executing.pop();
     }
 

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

@@ -25,8 +25,7 @@ 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

@@ -27,8 +27,7 @@ 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

@@ -30,8 +30,7 @@ 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

@@ -25,8 +25,7 @@ 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

@@ -27,8 +27,7 @@ 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

@@ -27,8 +27,7 @@ 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

@@ -25,8 +25,7 @@ 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

@@ -25,8 +25,7 @@ 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

@@ -27,8 +27,7 @@ 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

@@ -25,8 +25,7 @@ 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

@@ -28,8 +28,7 @@ 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

@@ -20,6 +20,8 @@ package org.jdrupes.vmoperator.runner.qemu.events;
 
 import com.fasterxml.jackson.databind.JsonNode;
 import java.util.Optional;
+import org.jgrapes.core.Channel;
+import org.jgrapes.core.Components;
 import org.jgrapes.core.Event;
 
 /**
@@ -47,7 +49,6 @@ 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());
@@ -112,4 +113,20 @@ public class MonitorEvent extends Event<Void> {
     public JsonNode data() {
         return data;
     }
+
+    /*
+     * (non-Javadoc)
+     * 
+     * @see java.lang.Object#toString()
+     */
+    @Override
+    public String toString() {
+        StringBuilder builder = new StringBuilder();
+        builder.append(Components.objectName(this)).append(" [").append(data);
+        if (channels() != null) {
+            builder.append(", channels=").append(Channel.toString(channels()));
+        }
+        builder.append(']');
+        return builder.toString();
+    }
 }

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

@@ -19,6 +19,8 @@
 package org.jdrupes.vmoperator.runner.qemu.events;
 
 import com.fasterxml.jackson.databind.JsonNode;
+import org.jgrapes.core.Channel;
+import org.jgrapes.core.Components;
 import org.jgrapes.core.Event;
 
 /**
@@ -40,4 +42,21 @@ public class OsinfoEvent extends Event<Void> {
     public JsonNode osinfo() {
         return osinfo;
     }
+
+    /*
+     * (non-Javadoc)
+     * 
+     * @see java.lang.Object#toString()
+     */
+    @Override
+    public String toString() {
+        StringBuilder builder = new StringBuilder();
+        builder.append(Components.objectName(this)).append(" [")
+            .append(osinfo);
+        if (channels() != null) {
+            builder.append(", channels=").append(Channel.toString(channels()));
+        }
+        builder.append(']');
+        return builder.toString();
+    }
 }

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

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

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

@@ -32,7 +32,6 @@ import java.util.logging.Logger;
  */
 public final class DataPath {
 
-    @SuppressWarnings("PMD.FieldNamingConventions")
     private static final Logger logger
         = Logger.getLogger(DataPath.class.getName());
 
@@ -56,7 +55,6 @@ 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) {
@@ -132,7 +130,6 @@ 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

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

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

org.jdrupes.vmoperator.vmmgmt/resources/org/jdrupes/vmoperator/vmmgmt/VmMgmt-view.ftl.html

@@ -30,7 +30,7 @@
       </tr>
     </thead>
     <tbody>
-      <template v-for="(entry, rowIndex) in filteredData">
+      <template v-for="(entry, rowIndex) in filteredData" :key="entry.name">
         <tr :class="[(rowIndex % 2) ? 'odd' : 'even']"
           :aria-expanded="(entry.name in detailsByName) ? 'true' : 'false'">
           <td v-for="key in controller.keys" 

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

@@ -28,7 +28,6 @@ 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

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

webpages/_includes/umami.html

@@ -0,0 +1 @@
+<script defer src="https://gotit.mnl.de/script.js" data-website-id="14b277ad-d330-4a54-82f1-a77d111240ac"></script>

webpages/_layouts/vm-operator.html

@@ -8,6 +8,7 @@
     <link rel="stylesheet" href="stylesheets/styles.css">
     <link rel="stylesheet" href="stylesheets/pygment_trac.css">
     <meta name="viewport" content="width=device-width">
+    {% include umami.html %}
     <!--[if lt IE 9]>
     <script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
     <![endif]-->

webpages/admin-gui.md

@@ -12,10 +12,10 @@ layout: vm-operator
 An overview display shows the current CPU and RAM usage and a graph
 with recent changes.
 
-![VM-Operator GUI](VM-Operator-GUI-preview.png)
+![VM-Operator admin GUI preview](VM-Operator-GUI-preview.png)
 
 The detail display lists all VMs. From here you can start and stop
 the VMs and adjust the CPU and RAM usages (modifies the definition
 in kubernetes).
 
-![VM-Operator GUI](VM-Operator-GUI-view.png)
+![VM-Operator admin GUI view](VM-Operator-GUI-view.png)

webpages/auto-login.md

@@ -9,7 +9,7 @@ layout: vm-operator
 
 When users log into the web GUI, they have already authenticated with the
 VM-Operator. In some environments, requiring an additional login on the
-guest OS can be cumbersome. To enhance the user experience, the VM-Operator
+guest OS can be annoying. To enhance the user experience, the VM-Operator
 supports automatic login on the guest operating system, thus eliminating
 the need for multiple logins. However, this feature requires specific
 support from the guest OS.
@@ -18,9 +18,9 @@ support from the guest OS.
 
 Automatic login requires an agent running inside the guest OS. Similar
 to QEMU's standard guest agent, the VM-Operator agent communicates with
-the host via a tty device (`/dev/virtio-ports/org.jdrupes.vmop_agent.0`). On
+the host via a tty device (provided in the guest as 
-modern Linux systems, `udev` can detect this device and trigger the start
+`/dev/virtio-ports/org.jdrupes.vmop_agent.0`). On modern Linux systems, `udev` can
-of an associated systemd service.
+detect this device and trigger the start of an associated systemd service.
 
 Sample configuration files for a VM-Operator agent are available
 [here](https://github.com/mnlipp/VM-Operator/tree/main/dev-example/vmop-agent).

webpages/index.md

@@ -9,7 +9,7 @@ layout: vm-operator
 
 # Welcome to VM-Operator
 
-![Overview picture](index-pic.svg)
+![VM-Operator summary picture](index-pic.svg)
 
 This project provides an easy to use and flexible solution for
 running QEMU/KVM based virtual machines (VMs) in Kubernetes pods.

webpages/pools.md

@@ -46,16 +46,20 @@ spec:
 The `retention` specifies how long the assignment of a VM from the pool to
 a user remains valid after the user closes the console. This ensures that
 a user can resume work within this timeframe without the risk of another
-user taking over the VM. The time is specified as
+user taking over the VM. The time is specified as an
 [ISO 8601 duration](https://en.wikipedia.org/wiki/ISO_8601#Durations).
+Specifying an ISO 8601 time is also supported, but if you consider
+using an absolute time, check again whether a dedicated VM for the user
+isn't the more appropriate choice.
 
-Setting `loginOnAssignment` to `true` triggers automatic login of the
+Setting `loginOnAssignment` to `true` (defaults to `false`) triggers automatic
-user (as described in [section auto login](auto-login.html)) when
+login of the user (as described in [section auto login](auto-login.html))
-the VM is assigned. The `permissions` property specifies the actions
+when the VM is assigned. The `permissions` property specifies the actions
-that users or roles can perform on assigned VMs.
+that users or roles can perform on assigned VMs. The `may` property defaults
+to `[accessConsole]` if not specified.
 
 VMs become members of one (or more) pools by adding the pool name to
-the `spec.pools` array, as shown below:
+the `spec.pools` array in the VM definition, as shown below:
 
 ```yaml
 apiVersion: "vmoperator.jdrupes.org/v1"