[JENKINS-72261] allow custom implementation for removing/update pod templates

src/main/java/org/csanchez/jenkins/plugins/kubernetes/KubernetesCloud.java

@@ -83,7 +83,7 @@
  *
  * @author Carlos Sanchez carlos@apache.org
  */
-public class KubernetesCloud extends Cloud {
+public class KubernetesCloud extends Cloud implements PodTemplateGroup {
     public static final int DEFAULT_MAX_REQUESTS_PER_HOST = 32;
     public static final Integer DEFAULT_WAIT_FOR_POD_SEC = 600;
 
@@ -591,6 +591,12 @@ public Collection<NodeProvisioner.PlannedNode> provision(@NonNull final Cloud.Cl
         return Collections.emptyList();
     }
 
+    @Override
+    public void replaceTemplate(PodTemplate oldTemplate, PodTemplate newTemplate){
+        this.removeTemplate(oldTemplate);
+        this.addTemplate(newTemplate);
+    }
+
     @Override
     public boolean canProvision(@NonNull Cloud.CloudState state) {
         return getTemplate(state.getLabel()) != null;
@@ -660,10 +666,16 @@ public void addTemplate(PodTemplate t) {
      *
      * @param t docker template
      */
+    @Override
     public void removeTemplate(PodTemplate t) {
         this.templates.remove(t);
     }
 
+    @Override
+    public String getPodTemplateGroupUrl() {
+        return "../../templates";
+    }
+
     /**
      * Add a dynamic pod template. Won't be displayed in UI, and persisted separately from the cloud instance.
      * @param t the template to add

src/main/java/org/csanchez/jenkins/plugins/kubernetes/PodTemplate.java

@@ -642,31 +642,30 @@ public void addEnvVars(List<TemplateEnvVar> envVars) {
      * Deletes the template.
      */
     @POST
-    public HttpResponse doDoDelete(@AncestorInPath KubernetesCloud kubernetesCloud) throws IOException {
+    public HttpResponse doDoDelete(@AncestorInPath PodTemplateGroup owner) throws IOException {
         Jenkins j = Jenkins.get();
         j.checkPermission(Jenkins.ADMINISTER);
-        if (kubernetesCloud == null) {
+        if (owner == null) {
             throw new IllegalStateException("Cloud could not be found");
         }
-        kubernetesCloud.removeTemplate(this);
+        owner.removeTemplate(this);
         j.save();
         // take the user back.
-        return new HttpRedirect("../../templates");
+        return new HttpRedirect(owner.getPodTemplateGroupUrl());
     }
 
     @POST
-    public HttpResponse doConfigSubmit(StaplerRequest req, @AncestorInPath KubernetesCloud kubernetesCloud) throws IOException, ServletException, Descriptor.FormException {
+    public HttpResponse doConfigSubmit(StaplerRequest req, @AncestorInPath PodTemplateGroup owner) throws IOException, ServletException, Descriptor.FormException {
         Jenkins j = Jenkins.get();
         j.checkPermission(Jenkins.ADMINISTER);
-        if (kubernetesCloud == null) {
+        if (owner == null) {
             throw new IllegalStateException("Cloud could not be found");
         }
-        kubernetesCloud.removeTemplate(this);
         PodTemplate newTemplate = reconfigure(req, req.getSubmittedForm());
-        kubernetesCloud.addTemplate(newTemplate);
+        owner.replaceTemplate(this, newTemplate);
         j.save();
         // take the user back.
-        return FormApply.success("../../templates");
+        return FormApply.success(owner.getPodTemplateGroupUrl());
     }
 
     private PodTemplate reconfigure(@NonNull final StaplerRequest req, JSONObject form) throws Descriptor.FormException {

src/main/java/org/csanchez/jenkins/plugins/kubernetes/PodTemplateGroup.java

@@ -0,0 +1,21 @@
+package org.csanchez.jenkins.plugins.kubernetes;
+/**
+ * A group of pod templates that can be saved together.
+ */
+public interface PodTemplateGroup {
+    /**
+     * Replaces the old template with the new template. 
+     * @param oldTemplate the old template to replace
+     * @param newTemplate the new template to replace with
+     */
+    void replaceTemplate(PodTemplate oldTemplate, PodTemplate newTemplate);
+    /**
+     * Removes the template from the group.
+     * @param podTemplate the template to remove
+     */
+    void removeTemplate(PodTemplate podTemplate);
+    /**
+     * @return the URL to redirect to after the template is saved.
+     */
+    String getPodTemplateGroupUrl();
+}