Add support for Jenkins 2 (incomplete)

Replace use of AbstractProject with Job to fix
ClassCastException thrown when using the plugin
in a pipeline job

The fix is "not" complete, it remains to find a
replacement to the call AbstractProject.isDisabled
used to decide if the build should be skipped
Previously called in BitbucketBuildTrigger.run()

fixes nishio-dens#94

Author: Frode Aannevik

src/main/java/bitbucketpullrequestbuilder/bitbucketpullrequestbuilder/BitbucketBuildTrigger.java

@@ -12,6 +12,7 @@
 import hudson.triggers.Trigger;
 import hudson.triggers.TriggerDescriptor;
 import hudson.util.ListBoxModel;
+import jenkins.model.ParameterizedJobMixIn;
 import net.sf.json.JSONObject;
 import org.kohsuke.stapler.DataBoundConstructor;
 import org.kohsuke.stapler.StaplerRequest;
@@ -27,7 +28,7 @@
 /**
  * Created by nishio
  */
-public class BitbucketBuildTrigger extends Trigger<AbstractProject<?, ?>> {
+public class BitbucketBuildTrigger extends Trigger<Job<?, ?>> {
     private static final Logger logger = Logger.getLogger(BitbucketBuildTrigger.class.getName());
     private final String projectPath;
     private final String cron;
@@ -140,7 +141,7 @@ public boolean getApproveIfSuccess() {
     }
 
     @Override
-    public void start(AbstractProject<?, ?> project, boolean newInstance) {
+    public void start(Job<?, ?> project, boolean newInstance) {
         try {
             this.bitbucketPullRequestsBuilder = BitbucketPullRequestsBuilder.getBuilder();
             this.bitbucketPullRequestsBuilder.setProject(project);
@@ -162,9 +163,22 @@ public BitbucketPullRequestsBuilder getBuilder() {
         return this.bitbucketPullRequestsBuilder;
     }
 
+    private ParameterizedJobMixIn retrieveScheduleJob(final Job<?, ?> job) {
+        // TODO 1.621+ use standard method
+        return new ParameterizedJobMixIn() {
+            @Override
+            protected Job asJob() {
+                return job;
+            }
+        };
+    }
+
     public QueueTaskFuture<?> startJob(BitbucketCause cause) {
         Map<String, ParameterValue> values = this.getDefaultParameters();
-        return this.job.scheduleBuild2(0, cause, new ParametersAction(new ArrayList(values.values())), new RevisionParameterAction(cause.getSourceCommitHash()));
+        return retrieveScheduleJob(this.job).scheduleBuild2(0,
+                new CauseAction(cause),
+                new ParametersAction(new ArrayList(values.values())),
+                new RevisionParameterAction(cause.getSourceCommitHash()));
     }
 
     private Map<String, ParameterValue> getDefaultParameters() {
@@ -181,11 +195,8 @@ private Map<String, ParameterValue> getDefaultParameters() {
 
     @Override
     public void run() {
-        if(this.getBuilder().getProject().isDisabled()) {
-            logger.info("Build Skip.");
-        } else {
-            this.bitbucketPullRequestsBuilder.run();
-        }
+        logger.log(Level.INFO, "TODO: check if project is disabled before calling bitbucketPullRequestsBuilder.run()");
+        this.bitbucketPullRequestsBuilder.run();
         this.getDescriptor().save();
     }
 
@@ -201,7 +212,7 @@ public BitbucketBuildTriggerDescriptor() {
 
         @Override
         public boolean isApplicable(Item item) {
-            return true;
+            return item instanceof Job && item instanceof ParameterizedJobMixIn.ParameterizedJob;
         }
 
         @Override

src/main/java/bitbucketpullrequestbuilder/bitbucketpullrequestbuilder/BitbucketPullRequestsBuilder.java

@@ -1,7 +1,6 @@
 package bitbucketpullrequestbuilder.bitbucketpullrequestbuilder;
 
 import bitbucketpullrequestbuilder.bitbucketpullrequestbuilder.bitbucket.Pullrequest;
-import hudson.model.AbstractProject;
 
 import java.io.UnsupportedEncodingException;
 import java.security.MessageDigest;
@@ -11,14 +10,15 @@
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import hudson.model.Job;
 import org.apache.commons.codec.binary.Hex;
 
 /**
  * Created by nishio
  */
 public class BitbucketPullRequestsBuilder {
     private static final Logger logger = Logger.getLogger(BitbucketBuildTrigger.class.getName());
-    private AbstractProject<?, ?> project;
+    private Job<?, ?> project;
     private BitbucketBuildTrigger trigger;
     private BitbucketRepository repository;
     private BitbucketBuilds builds;
@@ -47,15 +47,15 @@ public BitbucketPullRequestsBuilder setupBuilder() {
         return this;
     }
 
-    public void setProject(AbstractProject<?, ?> project) {
+    public void setProject(Job<?, ?> project) {
         this.project = project;
     }
 
     public void setTrigger(BitbucketBuildTrigger trigger) {
         this.trigger = trigger;
     }
 
-    public AbstractProject<?, ?> getProject() {
+    public Job<?, ?> getProject() {
         return this.project;
     }        
 
@@ -75,6 +75,7 @@ public String getProjectId() {
         exc.printStackTrace();
       }
       return this.project.getFullName();
+
     }
 
     public BitbucketBuildTrigger getTrigger() {