Support @DataBoundSetter for triggers and publishers.

Currently jenkins jobs defined using the generated DSL for the `gitlab-plugin` are required to supply all possible values for any defined triggers or publishers due to the use of the `@DataBoundConstructor` annotation. This leads to the problem described in https://github.com/jenkinsci/gitlab-plugin/issues/613 where any modifications to the trigger or publisher constructor signatures cause existing job definitions to fail when run against a new version of the plugin.

Fix this by adding support for a setter driven approach to configure triggers and publishers with the `@DataBoundSetter` annotation. This allows all unimportant configuration to be ignored when defining jobs and prevents new functionality from breaking existing jobs when upgrading.

src/main/java/com/dabsquared/gitlabjenkins/GitLabPushTrigger.java

@@ -48,6 +48,7 @@ import org.jenkinsci.Symbol;
 import org.kohsuke.stapler.Ancestor;
 import org.kohsuke.stapler.AncestorInPath;
 import org.kohsuke.stapler.DataBoundConstructor;
+import org.kohsuke.stapler.DataBoundSetter;
 import org.kohsuke.stapler.QueryParameter;
 import org.kohsuke.stapler.Stapler;
 import org.kohsuke.stapler.StaplerRequest;
@@ -76,9 +77,9 @@ public class GitLabPushTrigger extends Trigger<Job<?, ?>> {
     private boolean triggerOnMergeRequest = true;
     private boolean triggerOnAcceptedMergeRequest = false;
     private boolean triggerOnClosedMergeRequest = false;
-    private final TriggerOpenMergeRequest triggerOpenMergeRequestOnPush;
+    private TriggerOpenMergeRequest triggerOpenMergeRequestOnPush;
     private boolean triggerOnNoteRequest = true;
-    private final String noteRegex;
+    private String noteRegex = "";
     private boolean ciSkip = true;
     private boolean skipWorkInProgressMergeRequest;
     private boolean setBuildDescription = true;
@@ -91,7 +92,7 @@ public class GitLabPushTrigger extends Trigger<Job<?, ?>> {
     private String includeBranchesSpec;
     private String excludeBranchesSpec;
     private String targetBranchRegex;
-    private final MergeRequestLabelFilterConfig mergeRequestLabelFilterConfig;
+    private MergeRequestLabelFilterConfig mergeRequestLabelFilterConfig;
     private volatile Secret secretToken;
 
     private transient BranchFilter branchFilter;
@@ -101,8 +102,10 @@ public class GitLabPushTrigger extends Trigger<Job<?, ?>> {
     private transient boolean acceptMergeRequestOnSuccess;
     private transient MergeRequestLabelFilter mergeRequestLabelFilter;
 
-
-    @DataBoundConstructor
+    /**
+     * @deprecated use {@link #GitLabPushTrigger()} with setters to configure an instance of this class.
+     */
+    @Deprecated
     @GeneratePojoBuilder(intoPackage = "*.builder.generated", withFactoryMethod = "*")
     public GitLabPushTrigger(boolean triggerOnPush, boolean triggerOnMergeRequest, boolean triggerOnAcceptedMergeRequest, boolean triggerOnClosedMergeRequest,
     						 TriggerOpenMergeRequest triggerOpenMergeRequestOnPush, boolean triggerOnNoteRequest, String noteRegex,
@@ -137,6 +140,9 @@ public class GitLabPushTrigger extends Trigger<Job<?, ?>> {
         initializeMergeRequestLabelFilter();
     }
 
+    @DataBoundConstructor
+    public GitLabPushTrigger() { }
+
     @Initializer(after = InitMilestone.JOB_LOADED)
     public static void migrateJobs() throws IOException {
         GitLabPushTrigger.DescriptorImpl oldConfig = Trigger.all().get(GitLabPushTrigger.DescriptorImpl.class);
@@ -249,18 +255,150 @@ public class GitLabPushTrigger extends Trigger<Job<?, ?>> {
         return secretToken == null ? null : secretToken.getPlainText();
     }
 
+    @DataBoundSetter
+    public void setTriggerOnPush(boolean triggerOnPush) {
+        this.triggerOnPush = triggerOnPush;
+    }
+
+    @DataBoundSetter
+    public void setTriggerOnMergeRequest(boolean triggerOnMergeRequest) {
+        this.triggerOnMergeRequest = triggerOnMergeRequest;
+    }
+
+    @DataBoundSetter
+    public void setTriggerOnAcceptedMergeRequest(boolean triggerOnAcceptedMergeRequest) {
+        this.triggerOnAcceptedMergeRequest = triggerOnAcceptedMergeRequest;
+    }
+
+    @DataBoundSetter
+    public void setTriggerOnClosedMergeRequest(boolean triggerOnClosedMergeRequest) {
+        this.triggerOnClosedMergeRequest = triggerOnClosedMergeRequest;
+    }
+
+    @DataBoundSetter
+    public void setTriggerOpenMergeRequestOnPush(TriggerOpenMergeRequest triggerOpenMergeRequestOnPush) {
+        this.triggerOpenMergeRequestOnPush = triggerOpenMergeRequestOnPush;
+    }
+
+    @DataBoundSetter
+    public void setTriggerOnNoteRequest(boolean triggerOnNoteRequest) {
+        this.triggerOnNoteRequest = triggerOnNoteRequest;
+    }
+
+    @DataBoundSetter
+    public void setNoteRegex(String noteRegex) {
+        this.noteRegex = noteRegex;
+    }
+
+    @DataBoundSetter
+    public void setCiSkip(boolean ciSkip) {
+        this.ciSkip = ciSkip;
+    }
+
+    @DataBoundSetter
+    public void setSkipWorkInProgressMergeRequest(boolean skipWorkInProgressMergeRequest) {
+        this.skipWorkInProgressMergeRequest = skipWorkInProgressMergeRequest;
+    }
+
+    @DataBoundSetter
+    public void setSetBuildDescription(boolean setBuildDescription) {
+        this.setBuildDescription = setBuildDescription;
+    }
+
+    @DataBoundSetter
+    public void setAddNoteOnMergeRequest(boolean addNoteOnMergeRequest) {
+        this.addNoteOnMergeRequest = addNoteOnMergeRequest;
+    }
+
+    @DataBoundSetter
+    public void setAddCiMessage(boolean addCiMessage) {
+        this.addCiMessage = addCiMessage;
+    }
+
+    @DataBoundSetter
+    public void setAddVoteOnMergeRequest(boolean addVoteOnMergeRequest) {
+        this.addVoteOnMergeRequest = addVoteOnMergeRequest;
+    }
+
+    @DataBoundSetter
+    public void setBranchFilterName(String branchFilterName) {
+        this.branchFilterName = branchFilterName;
+    }
+
+    @DataBoundSetter
+    public void setBranchFilterType(BranchFilterType branchFilterType) {
+        this.branchFilterType = branchFilterType;
+    }
+
+    @DataBoundSetter
+    public void setIncludeBranchesSpec(String includeBranchesSpec) {
+        this.includeBranchesSpec = includeBranchesSpec;
+    }
+
+    @DataBoundSetter
+    public void setExcludeBranchesSpec(String excludeBranchesSpec) {
+        this.excludeBranchesSpec = excludeBranchesSpec;
+    }
+
+    @DataBoundSetter
+    public void setTargetBranchRegex(String targetBranchRegex) {
+        this.targetBranchRegex = targetBranchRegex;
+    }
+
+    @DataBoundSetter
+    public void setMergeRequestLabelFilterConfig(MergeRequestLabelFilterConfig mergeRequestLabelFilterConfig) {
+        this.mergeRequestLabelFilterConfig = mergeRequestLabelFilterConfig;
+    }
+
+    @DataBoundSetter
+    public void setSecretToken(String secretToken) {
+        this.secretToken = Secret.fromString(secretToken);
+    }
+
+    @DataBoundSetter
+    public void setAcceptMergeRequestOnSuccess(boolean acceptMergeRequestOnSuccess) {
+        this.acceptMergeRequestOnSuccess = acceptMergeRequestOnSuccess;
+    }
+
     // executes when the Trigger receives a push request
     public void onPost(final PushHook hook) {
+        if (branchFilter == null) {
+            initializeBranchFilter();
+        }
+        if (mergeRequestLabelFilter == null) {
+            initializeMergeRequestLabelFilter();
+        }
+        if (pushHookTriggerHandler == null) {
+            initializeTriggerHandler();
+        }
         pushHookTriggerHandler.handle(job, hook, ciSkip, branchFilter, mergeRequestLabelFilter);
     }
 
     // executes when the Trigger receives a merge request
     public void onPost(final MergeRequestHook hook) {
+        if (branchFilter == null) {
+            initializeBranchFilter();
+        }
+        if (mergeRequestLabelFilter == null) {
+            initializeMergeRequestLabelFilter();
+        }
+        if (mergeRequestHookTriggerHandler == null) {
+            initializeTriggerHandler();
+        }
         mergeRequestHookTriggerHandler.handle(job, hook, ciSkip, branchFilter, mergeRequestLabelFilter);
     }
 
     // executes when the Trigger receives a note request
     public void onPost(final NoteHook hook) {
+        if (branchFilter == null) {
+            initializeBranchFilter();
+        }
+        if (mergeRequestLabelFilter == null) {
+            initializeMergeRequestLabelFilter();
+        }
+        if (noteHookTriggerHandler == null) {
+            initializeTriggerHandler();
+        }
         noteHookTriggerHandler.handle(job, hook, ciSkip, branchFilter, mergeRequestLabelFilter);
     }
 

src/main/java/com/dabsquared/gitlabjenkins/publisher/GitLabMessagePublisher.java

@@ -11,6 +11,7 @@ import hudson.tasks.BuildStepDescriptor;
 import hudson.tasks.Publisher;
 import jenkins.model.Jenkins;
 import org.kohsuke.stapler.DataBoundConstructor;
+import org.kohsuke.stapler.DataBoundSetter;
 
 import javax.ws.rs.ProcessingException;
 import javax.ws.rs.WebApplicationException;
@@ -35,7 +36,10 @@ public class GitLabMessagePublisher extends MergeRequestNotifier {
     private String abortNoteText;
     private String unstableNoteText;
 
-    @DataBoundConstructor
+    /**
+     * @deprecated use {@link #GitLabMessagePublisher()} with setters to configure an instance of this class.
+     */
+    @Deprecated
     public GitLabMessagePublisher(boolean onlyForFailure, boolean replaceSuccessNote, boolean replaceFailureNote, boolean replaceAbortNote, boolean replaceUnstableNote,
                                   String successNoteText, String failureNoteText, String abortNoteText, String unstableNoteText) {
         this.onlyForFailure = onlyForFailure;
@@ -49,6 +53,7 @@ public class GitLabMessagePublisher extends MergeRequestNotifier {
         this.unstableNoteText = unstableNoteText;
     }
 
+    @DataBoundConstructor
     public GitLabMessagePublisher() { }
 
     public boolean isOnlyForFailure() {
@@ -87,6 +92,51 @@ public class GitLabMessagePublisher extends MergeRequestNotifier {
         return this.unstableNoteText == null ? "" : this.unstableNoteText;
     }
 
+    @DataBoundSetter
+    public void setOnlyForFailure(boolean onlyForFailure) {
+        this.onlyForFailure = onlyForFailure;
+    }
+
+    @DataBoundSetter
+    public void setReplaceSuccessNote(boolean replaceSuccessNote) {
+        this.replaceSuccessNote = replaceSuccessNote;
+    }
+
+    @DataBoundSetter
+    public void setReplaceFailureNote(boolean replaceFailureNote) {
+        this.replaceFailureNote = replaceFailureNote;
+    }
+
+    @DataBoundSetter
+    public void setReplaceAbortNote(boolean replaceAbortNote) {
+        this.replaceAbortNote = replaceAbortNote;
+    }
+
+    @DataBoundSetter
+    public void setReplaceUnstableNote(boolean replaceUnstableNote) {
+        this.replaceUnstableNote = replaceUnstableNote;
+    }
+
+    @DataBoundSetter
+    public void setSuccessNoteText(String successNoteText) {
+        this.successNoteText = successNoteText;
+    }
+
+    @DataBoundSetter
+    public void setFailureNoteText(String failureNoteText) {
+        this.failureNoteText = failureNoteText;
+    }
+
+    @DataBoundSetter
+    public void setAbortNoteText(String abortNoteText) {
+        this.abortNoteText = abortNoteText;
+    }
+
+    @DataBoundSetter
+    public void setUnstableNoteText(String unstableNoteText) {
+        this.unstableNoteText = unstableNoteText;
+    }
+
     @Extension
     public static class DescriptorImpl extends BuildStepDescriptor<Publisher> {
 

src/main/java/com/dabsquared/gitlabjenkins/trigger/filter/MergeRequestLabelFilterConfig.java

@@ -1,21 +1,28 @@
 package com.dabsquared.gitlabjenkins.trigger.filter;
 
 import org.kohsuke.stapler.DataBoundConstructor;
+import org.kohsuke.stapler.DataBoundSetter;
 
 /**
  * @author Robin Müller
  */
 public class MergeRequestLabelFilterConfig {
 
-    private final String include;
-    private final String exclude;
+    private String include;
+    private String exclude;
 
-    @DataBoundConstructor
+    /**
+     * @deprecated use {@link #MergeRequestLabelFilterConfig()} with setters to configure an instance of this class.
+     */
+    @Deprecated
     public MergeRequestLabelFilterConfig(String include, String exclude) {
         this.include = include;
         this.exclude = exclude;
     }
 
+    @DataBoundConstructor
+    public MergeRequestLabelFilterConfig() { }
+
     public String getInclude() {
         return include;
     }
@@ -23,4 +30,14 @@ public class MergeRequestLabelFilterConfig {
     public String getExclude() {
         return exclude;
     }
+
+    @DataBoundSetter
+    public void setInclude(String include) {
+        this.include = include;
+    }
+
+    @DataBoundSetter
+    public void setExclude(String exclude) {
+        this.exclude = exclude;
+    }
 }