[JENKINS-57921] - Add SelfPromotionStep for Pipeline jobs

pom.xml

@@ -76,6 +76,30 @@
   </build>
 
   <dependencies>
+    <dependency>
+      <groupId>org.jenkins-ci.plugins.workflow</groupId>
+      <artifactId>workflow-step-api</artifactId>
+      <version>2.3</version>
+      <optional>true</optional>
+    </dependency>
+    <dependency>
+      <groupId>org.jenkins-ci.plugins.workflow</groupId>
+      <artifactId>workflow-support</artifactId>
+      <version>2.6</version>
+      <optional>true</optional>
+    </dependency>
+    <dependency>
+      <groupId>org.jenkins-ci.plugins.workflow</groupId>
+      <artifactId>workflow-cps</artifactId>
+      <version>2.9</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.jenkins-ci.plugins.workflow</groupId>
+      <artifactId>workflow-job</artifactId>
+      <version>2.9</version>
+      <scope>test</scope>
+    </dependency>
     <dependency>
       <groupId>org.jenkins-ci.main</groupId>
       <artifactId>maven-plugin</artifactId>

src/main/java/hudson/plugins/promoted_builds/SelfPromotionStep.java

@@ -0,0 +1,70 @@
+package hudson.plugins.promoted_builds;
+
+import com.google.common.collect.ImmutableSet;
+import hudson.Extension;
+import hudson.model.Run;
+import hudson.model.TaskListener;
+import org.apache.commons.lang.StringUtils;
+import org.jenkinsci.plugins.workflow.steps.Step;
+import org.jenkinsci.plugins.workflow.steps.StepContext;
+import org.jenkinsci.plugins.workflow.steps.StepDescriptor;
+import org.jenkinsci.plugins.workflow.steps.StepExecution;
+import org.kohsuke.stapler.DataBoundConstructor;
+
+import javax.annotation.CheckForNull;
+import javax.annotation.Nonnull;
+import java.util.Set;
+
+
+public class SelfPromotionStep extends Step {
+    @CheckForNull
+    private String job;
+
+    // @Param(name="job")
+    @DataBoundConstructor
+    public SelfPromotionStep(String job){
+
+        this.job = StringUtils.trimToNull(job);
+    }
+
+    public String getJob(){
+
+        return job;
+    }
+    public void setJob(String Job){
+
+        this.job = StringUtils.trimToNull(job);
+    }
+    // Confusion!!!!!!
+    /*public StepExecution start(StepContext context) throws Exception{
+        return new Execution(context,this);
+    }**/
+
+    @Extension
+    public static class DescriptorImpl extends StepDescriptor {
+
+        @Override
+        public String getFunctionName(){
+            return "selfPromote";
+        }
+
+        @Override
+        public String getDisplayName(){
+            return "Self Promotion";}
+
+        @Override
+        public Set<Class<?>> getRequiredContext(){
+            return ImmutableSet.of(Run.class, TaskListener.class);
+            }
+        }
+        // Confusion
+       /* public static class Execution extends SynchronousStepExecution<Void>{
+            Execution(@Nonnull StepContext context, @Nonnull SelfPromotionStep step){
+                super(context);
+                this.step = step;
+            }*/
+
+       private static final long serialVersionUID = 1L;
+        }
+    }
+}