Fix JENKINS-28212

Serialize the descriptor id's instead of the descriptors themselves.

src/main/java/hudson/plugins/emailext/EmailRecipientUtils.java

@@ -165,11 +165,11 @@ public static void addAddressesFromRecipientList(Set<InternetAddress> to, Set<In
         try {
             Set<InternetAddress> internetAddresses = convertRecipientString(recipientList, envVars, EmailRecipientUtils.TO);
             to.addAll(internetAddresses);
-            if(bcc != null) {
+            if(bcc != null && bcc.size() > 0) {
                 Set<InternetAddress> bccInternetAddresses = convertRecipientString(recipientList, envVars, EmailRecipientUtils.BCC);
                 bcc.addAll(bccInternetAddresses);
             }
-            if(cc != null) {
+            if(cc != null && cc.size() > 0) {
                 Set<InternetAddress> ccInternetAddresses = convertRecipientString(recipientList, envVars, EmailRecipientUtils.CC);
                 cc.addAll(ccInternetAddresses);
             }

src/main/java/hudson/plugins/emailext/ExtendedEmailPublisherDescriptor.java

@@ -101,8 +101,10 @@
 
     private List<GroovyScriptPath> defaultClasspath = new ArrayList<GroovyScriptPath>();
 
-    private List<EmailTriggerDescriptor> defaultTriggers = new ArrayList<EmailTriggerDescriptor>();
-
+    private transient List<EmailTriggerDescriptor> defaultTriggers = new ArrayList<EmailTriggerDescriptor>();
+
+    private List<String> defaultTriggerIds = new ArrayList<String>();
+
     /**
      * This is the global emergency email address
      */
@@ -330,11 +332,11 @@ public String getDefaultPresendScript() {
         return defaultClasspath;
     }
 
-    public List<EmailTriggerDescriptor> getDefaultTriggers() {
-        if(defaultTriggers.isEmpty()) {
-            defaultTriggers.add((EmailTriggerDescriptor)Jenkins.getInstance().getDescriptor(FailureTrigger.class));
+    public List<String> getDefaultTriggerIds() {
+        if(defaultTriggerIds.isEmpty()) {
+            defaultTriggerIds.add(Jenkins.getInstance().getDescriptor(FailureTrigger.class).getId());
         }
-        return defaultTriggers;
+        return defaultTriggerIds;
     }
 
     public ExtendedEmailPublisherDescriptor() {
@@ -416,23 +418,21 @@ public boolean configure(StaplerRequest req, JSONObject formData)
             listId = null;
         }
 
-        List<String> classes = new ArrayList<String>();
+        List<String> ids = new ArrayList<String>();
         if(formData.optJSONArray("defaultTriggers") != null) {
-            for(Object tName : formData.getJSONArray("defaultTriggers")) {
-               String triggerName = tName.toString();
-               classes.add(triggerName);
+            for(Object id : formData.getJSONArray("defaultTriggers")) {
+               ids.add(id.toString());
             }
         } else if(StringUtils.isNotEmpty(formData.optString("defaultTriggers"))) {
-            String triggerName = formData.getString("defaultTriggers");
-            classes.add(triggerName);
+            ids.add(formData.getString("defaultTriggers"));
         }
 
-        if(!classes.isEmpty()) {
-            defaultTriggers.clear();
-            for(String triggerName : classes) {
-               EmailTriggerDescriptor d = (EmailTriggerDescriptor)Jenkins.getInstance().getDescriptorByName(triggerName);
+        if(!ids.isEmpty()) {
+            defaultTriggerIds.clear();
+            for(String id : ids) {
+               EmailTriggerDescriptor d = (EmailTriggerDescriptor)Jenkins.getInstance().getDescriptor(id);
                if(d != null) {
-                   defaultTriggers.add(d);
+                   defaultTriggerIds.add(id);
                }
             }
         }
@@ -447,7 +447,7 @@ private String nullify(String v) {
         }
         return v;
     }
-
+    
     public Object readResolve() {
         if (!this.overrideGlobalSettings) {
             // need to get the plugin info from Mailer
@@ -463,6 +463,16 @@ public Object readResolve() {
             this.charset = Mailer.descriptor().getCharset();
             this.overrideGlobalSettings = true;
         }
+
+        if(!this.defaultTriggers.isEmpty()) {
+            defaultTriggerIds.clear();
+            for(EmailTriggerDescriptor t : this.defaultTriggers) {
+                if(!defaultTriggerIds.contains(t.getId())) {
+                    defaultTriggerIds.add(t.getId());
+                }
+            }
+        }
+
         return this;
     }
 

src/main/resources/hudson/plugins/emailext/ExtendedEmailPublisher/config.groovy

@@ -76,13 +76,12 @@ f.advanced(title: _("Advanced Settings")) {
   if(instance != null) {
     configuredTriggers = instance.configuredTriggers
   } else {
-    jenkins.model.Jenkins.instance.getDescriptor(hudson.plugins.emailext.ExtendedEmailPublisher).defaultTriggers.each { t ->
-        configuredTriggers << t.createDefault()              
+    jenkins.model.Jenkins.instance.getDescriptor(hudson.plugins.emailext.ExtendedEmailPublisher).defaultTriggerIds.each { t ->
+        def desc = jenkins.model.Jenkins.instance.getDescriptor(t)
+        configuredTriggers << desc.createDefault()              
     }
   }
 
-  //def configuredTriggers = instance != null ? instance.configuredTriggers : [jenkins.model.Jenkins.instance.getDescriptor(hudson.plugins.emailext.plugins.trigger.FailureTrigger.class).createDefault()]
-
   f.entry(title: _("Triggers"), help: "/plugin/email-ext/help/projectConfig/addATrigger.html") {
     f.hetero_list(name: "project_triggers", hasHeader: true, descriptors: triggers, items: configuredTriggers, addCaption:_("Add Trigger"), deleteCaption: _("Remove Trigger"))
   }

src/main/resources/hudson/plugins/emailext/ExtendedEmailPublisher/global.groovy

@@ -88,7 +88,7 @@ f.section(title: _("Extended E-mail Notification")) {
   f.advanced(title: _("Default Triggers")) {
     f.entry(title: _("Default Triggers"), help: "/plugin/email-ext/help/globalConfig/defaultTriggers.html") {
       hudson.plugins.emailext.plugins.EmailTrigger.all().each { t ->
-        f.checkbox(name: "defaultTriggers", title: t.displayName, checked: descriptor.defaultTriggers.contains(t), json: t.clazz.name)
+        f.checkbox(name: "defaultTriggers", title: t.displayName, checked: descriptor.defaultTriggerIds.contains(t.id), json: t.id)
         br()
       }
     }