[FIXED JENKINS-39553] Make GitHub plugin BuildableItem aware (#153)

* [FIXED JENKINS-39533] Make GitHub plugin BuildableItem aware

* Address code review comments from Oleg

* not actually deprecated

* Address review comments

src/main/java/com/cloudbees/jenkins/Cleaner.java

@@ -1,7 +1,7 @@
 package com.cloudbees.jenkins;
 
 import hudson.Extension;
-import hudson.model.Job;
+import hudson.model.Item;
 import hudson.model.PeriodicWork;
 import jenkins.model.Jenkins;
 import org.jenkinsci.plugins.github.GitHubPlugin;
@@ -28,7 +28,7 @@
 public class Cleaner extends PeriodicWork {
     /**
      * Queue contains repo names prepared to cleanup.
-     * After configure method on job, trigger calls {@link #onStop(Job)}
+     * After configure method on job, trigger calls {@link #onStop(Item)}
      * which converts to repo names with help of contributors.
      *
      * This queue is thread-safe, so any thread can write or
@@ -39,8 +39,8 @@
     /**
      * Called when a {@link GitHubPushTrigger} is about to be removed.
      */
-    /* package */ void onStop(Job<?, ?> job) {
-        cleanQueue.addAll(GitHubRepositoryNameContributor.parseAssociatedNames(job));
+    /* package */ void onStop(Item item) {
+        cleanQueue.addAll(GitHubRepositoryNameContributor.parseAssociatedNames(item));
     }
 
     @Override
@@ -61,8 +61,8 @@ protected void doRun() throws Exception {
 
         URL url = GitHubPlugin.configuration().getHookUrl();
 
-        List<Job> jobs = Jenkins.getInstance().getAllItems(Job.class);
-        List<GitHubRepositoryName> aliveRepos = from(jobs)
+        List<Item> items = Jenkins.getInstance().getAllItems(Item.class);
+        List<GitHubRepositoryName> aliveRepos = from(items)
                 .filter(isAlive())  // live repos
                 .transformAndConcat(associatedNames()).toList();
 

src/main/java/com/cloudbees/jenkins/GitHubPushTrigger.java

@@ -27,6 +27,8 @@
 import org.jenkinsci.plugins.github.config.GitHubPluginConfig;
 import org.jenkinsci.plugins.github.internal.GHPluginConfigException;
 import org.jenkinsci.plugins.github.migration.Migrator;
+import org.kohsuke.accmod.Restricted;
+import org.kohsuke.accmod.restrictions.NoExternalUse;
 import org.kohsuke.stapler.AncestorInPath;
 import org.kohsuke.stapler.DataBoundConstructor;
 import org.slf4j.Logger;
@@ -368,19 +370,20 @@ private static ThreadFactory threadFactory() {
         }
 
         /**
-         * Checks that repo defined in this job is not in administrative monitor as failed to be registered.
+         * Checks that repo defined in this item is not in administrative monitor as failed to be registered.
          * If that so, shows warning with some instructions
          *
-         * @param job - to check against. Should be not null and have at least one repo defined
+         * @param item - to check against. Should be not null and have at least one repo defined
          *
          * @return warning or empty string
          * @since 1.17.0
          */
         @SuppressWarnings("unused")
-        public FormValidation doCheckHookRegistered(@AncestorInPath Job<?, ?> job) {
-            Preconditions.checkNotNull(job, "Job can't be null if wants to check hook in monitor");
+        @Restricted(NoExternalUse.class) // invoked from Stapler
+        public FormValidation doCheckHookRegistered(@AncestorInPath Item item) {
+            Preconditions.checkNotNull(item, "Item can't be null if wants to check hook in monitor");
 
-            Collection<GitHubRepositoryName> repos = GitHubRepositoryNameContributor.parseAssociatedNames(job);
+            Collection<GitHubRepositoryName> repos = GitHubRepositoryNameContributor.parseAssociatedNames(item);
 
             for (GitHubRepositoryName repo : repos) {
                 if (monitor.isProblemWith(repo)) {

src/main/java/com/cloudbees/jenkins/GitHubRepositoryNameContributor.java

@@ -7,6 +7,7 @@
 import hudson.Util;
 import hudson.model.AbstractProject;
 import hudson.model.EnvironmentContributor;
+import hudson.model.Item;
 import hudson.model.Job;
 import hudson.model.TaskListener;
 import hudson.plugins.git.GitSCM;
@@ -36,41 +37,57 @@
      * Looks at the definition of {@link AbstractProject} and list up the related github repositories,
      * then puts them into the collection.
      *
-     * @deprecated Use {@link #parseAssociatedNames(Job, Collection)}
+     * @deprecated Use {@link #parseAssociatedNames(Item, Collection)}
      */
     @Deprecated
     public void parseAssociatedNames(AbstractProject<?, ?> job, Collection<GitHubRepositoryName> result) {
-        parseAssociatedNames((Job) job, result);
+        parseAssociatedNames((Item) job, result);
     }
 
     /**
      * Looks at the definition of {@link Job} and list up the related github repositories,
      * then puts them into the collection.
+     * @deprecated Use {@link #parseAssociatedNames(Item, Collection)}
      */
+    @Deprecated
     public /*abstract*/ void parseAssociatedNames(Job<?, ?> job, Collection<GitHubRepositoryName> result) {
-        if (overriddenMethodHasDeprecatedSignature(job)) {
-            parseAssociatedNames((AbstractProject) job, result);
-        } else {
-            throw new AbstractMethodError("you must override the new overload of parseAssociatedNames");
-        }
+        parseAssociatedNames((Item) job, result);
     }
 
     /**
-     * To select backward compatible method with old extensions
-     * with overridden {@link #parseAssociatedNames(AbstractProject, Collection)}
-     *
-     * @param job - parameter to check for old class
-     *
-     * @return true if overridden deprecated method
+     * Looks at the definition of {@link Item} and list up the related github repositories,
+     * then puts them into the collection.
+     * @param item the item.
+     * @param result the collection to add repository names to
+     * @since FIXME
      */
-    private boolean overriddenMethodHasDeprecatedSignature(Job<?, ?> job) {
-        return Util.isOverridden(
+    @SuppressWarnings("deprecation")
+    public /*abstract*/ void parseAssociatedNames(Item item, Collection<GitHubRepositoryName> result) {
+        if (Util.isOverridden(
+                GitHubRepositoryNameContributor.class,
+                getClass(),
+                "parseAssociatedNames",
+                Job.class,
+                Collection.class
+        )) {
+            // if this impl is legacy, it cannot contribute to non-jobs, so not an error
+            if (item instanceof Job) {
+                parseAssociatedNames((Job<?, ?>) item, result);
+            }
+        } else  if (Util.isOverridden(
                 GitHubRepositoryNameContributor.class,
                 getClass(),
                 "parseAssociatedNames",
                 AbstractProject.class,
                 Collection.class
-        ) && job instanceof AbstractProject;
+        )) {
+            // if this impl is legacy, it cannot contribute to non-projects, so not an error
+            if (item instanceof AbstractProject) {
+                parseAssociatedNames((AbstractProject<?, ?>) item, result);
+            }
+        } else {
+            throw new AbstractMethodError("you must override the new overload of parseAssociatedNames");
+        }
     }
 
     public static ExtensionList<GitHubRepositoryNameContributor> all() {
@@ -82,13 +99,21 @@ private boolean overriddenMethodHasDeprecatedSignature(Job<?, ?> job) {
      */
     @Deprecated
     public static Collection<GitHubRepositoryName> parseAssociatedNames(AbstractProject<?, ?> job) {
-        return parseAssociatedNames((Job) job);
+        return parseAssociatedNames((Item) job);
     }
 
+    /**
+     * @deprecated Use {@link #parseAssociatedNames(Item)}
+     */
+    @Deprecated
     public static Collection<GitHubRepositoryName> parseAssociatedNames(Job<?, ?> job) {
+        return parseAssociatedNames((Item) job);
+    }
+
+    public static Collection<GitHubRepositoryName> parseAssociatedNames(Item item) {
         Set<GitHubRepositoryName> names = new HashSet<GitHubRepositoryName>();
         for (GitHubRepositoryNameContributor c : all()) {
-            c.parseAssociatedNames(job, names);
+            c.parseAssociatedNames(item, names);
         }
         return names;
     }
@@ -99,11 +124,11 @@ private boolean overriddenMethodHasDeprecatedSignature(Job<?, ?> job) {
     @Extension
     public static class FromSCM extends GitHubRepositoryNameContributor {
         @Override
-        public void parseAssociatedNames(Job<?, ?> job, Collection<GitHubRepositoryName> result) {
-            SCMTriggerItem item = SCMTriggerItems.asSCMTriggerItem(job);
-            EnvVars envVars = buildEnv(job);
-            if (item != null) {
-                for (SCM scm : item.getSCMs()) {
+        public void parseAssociatedNames(Item item, Collection<GitHubRepositoryName> result) {
+            SCMTriggerItem triggerItem = SCMTriggerItems.asSCMTriggerItem(item);
+            EnvVars envVars = item instanceof Job ? buildEnv((Job) item) : new EnvVars();
+            if (triggerItem != null) {
+                for (SCM scm : triggerItem.getSCMs()) {
                     addRepositories(scm, envVars, result);
                 }
             }

src/main/java/com/cloudbees/jenkins/GitHubTrigger.java

@@ -3,7 +3,7 @@
 import hudson.Extension;
 import hudson.Util;
 import hudson.model.AbstractProject;
-import hudson.model.Job;
+import hudson.model.Item;
 import hudson.triggers.Trigger;
 import jenkins.model.ParameterizedJobMixIn;
 
@@ -46,9 +46,9 @@
     @Extension
     class GitHubRepositoryNameContributorImpl extends GitHubRepositoryNameContributor {
         @Override
-        public void parseAssociatedNames(Job<?, ?> job, Collection<GitHubRepositoryName> result) {
-            if (job instanceof ParameterizedJobMixIn.ParameterizedJob) {
-                ParameterizedJobMixIn.ParameterizedJob p = (ParameterizedJobMixIn.ParameterizedJob) job;
+        public void parseAssociatedNames(Item item, Collection<GitHubRepositoryName> result) {
+            if (item instanceof ParameterizedJobMixIn.ParameterizedJob) {
+                ParameterizedJobMixIn.ParameterizedJob p = (ParameterizedJobMixIn.ParameterizedJob) item;
                 // TODO use standard method in 1.621+
                 for (GitHubTrigger ght : Util.filter(p.getTriggers().values(), GitHubTrigger.class)) {
                     result.addAll(ght.getGitHubRepositories());

src/main/java/com/cloudbees/jenkins/GitHubWebHook.java

@@ -3,6 +3,7 @@
 import com.google.common.base.Function;
 import hudson.Extension;
 import hudson.ExtensionPoint;
+import hudson.model.Item;
 import hudson.model.Job;
 import hudson.model.RootAction;
 import hudson.model.UnprotectedRootAction;
@@ -70,21 +71,36 @@ public String getUrlName() {
      * {@code GitHubWebHook.get().registerHookFor(job);}
      *
      * @param job not null project to register hook for
+     * @deprecated use {@link #registerHookFor(Item)}
      */
+    @Deprecated
     public void registerHookFor(Job job) {
         reRegisterHookForJob().apply(job);
     }
 
+    /**
+     * If any wants to auto-register hook, then should call this method
+     * Example code:
+     * {@code GitHubWebHook.get().registerHookFor(item);}
+     *
+     * @param item not null item to register hook for
+     * @since FIXME
+     */
+    public void registerHookFor(Item item) {
+        reRegisterHookForJob().apply(item);
+    }
+
     /**
      * Calls {@link #registerHookFor(Job)} for every project which have subscriber
      *
      * @return list of jobs which jenkins tried to register hook
      */
-    public List<Job> reRegisterAllHooks() {
-        return from(getJenkinsInstance().getAllItems(Job.class))
+    public List<Item> reRegisterAllHooks() {
+        return from(getJenkinsInstance().getAllItems(Item.class))
                 .filter(isBuildable())
                 .filter(isAlive())
-                .transform(reRegisterHookForJob()).toList();
+                .transform(reRegisterHookForJob())
+                .toList();
     }
 
     /**
@@ -101,11 +117,11 @@ public void doIndex(@Nonnull @GHEventHeader GHEvent event, @Nonnull @GHEventPayl
                 .transform(processEvent(event, payload)).toList();
     }
 
-    private Function<Job, Job> reRegisterHookForJob() {
-        return new Function<Job, Job>() {
+    private <T extends Item> Function<T, T> reRegisterHookForJob() {
+        return new Function<T, T>() {
             @Override
-            public Job apply(Job job) {
-                LOGGER.debug("Calling registerHooks() for {}", notNull(job, "Job can't be null").getFullName());
+            public T apply(T job) {
+                LOGGER.debug("Calling registerHooks() for {}", notNull(job, "Item can't be null").getFullName());
 
                 // We should handle wrong url of self defined hook url here in any case with try-catch :(
                 URL hookUrl;

src/main/java/org/jenkinsci/plugins/github/config/GitHubPluginConfig.java

@@ -6,7 +6,7 @@
 import hudson.Extension;
 import hudson.XmlFile;
 import hudson.model.Descriptor;
-import hudson.model.Job;
+import hudson.model.Item;
 import hudson.util.FormValidation;
 import jenkins.model.GlobalConfiguration;
 import jenkins.model.Jenkins;
@@ -181,10 +181,10 @@ public FormValidation doReRegister() {
             return FormValidation.warning("Works only when Jenkins manages hooks (one ore more creds specified)");
         }
 
-        List<Job> registered = GitHubWebHook.get().reRegisterAllHooks();
+        List<Item> registered = GitHubWebHook.get().reRegisterAllHooks();
 
-        LOGGER.info("Called registerHooks() for {} jobs", registered.size());
-        return FormValidation.ok("Called re-register hooks for %s jobs", registered.size());
+        LOGGER.info("Called registerHooks() for {} items", registered.size());
+        return FormValidation.ok("Called re-register hooks for %s items", registered.size());
     }
 
     @SuppressWarnings("unused")