Iss #151 - Add forced revalidation for GH validation

Resolves #151 (closed)

src/main/java/org/eclipsefoundation/git/eca/helper/GithubValidationHelper.java

@@ -103,10 +103,12 @@ public class GithubValidationHelper {
      * @param org the name of the GH organization
      * @param repoName the slug of the repo that has the PR to be validated
      * @param prNo the PR number for the current request.
+     * @param forceRevalidation true if revalidation should be forced when there is no changes, false otherwise.
      * @return the validated response if it is a valid request, or throws a web exception if there is a problem validating
      * the request.
      */
-    public ValidationResponse validateIncomingRequest(RequestWrapper wrapper, String org, String repoName, Integer prNo) {
+    public ValidationResponse validateIncomingRequest(RequestWrapper wrapper, String org, String repoName, Integer prNo,
+            boolean forceRevalidation) {
         // use logging helper to sanitize newlines as they aren't needed here
         String fullRepoName = LoggingHelper.format(org + '/' + repoName);
         // get the installation ID for the given repo if it exists, and if the PR noted exists
@@ -145,7 +147,10 @@ public class GithubValidationHelper {
         }
 
         // we only want to update/revalidate for open PRs, so don't do this check if the PR is merged/closed
-        if ("open".equalsIgnoreCase(prResponse.get().getState()) && commitShas.size() != statuses.size()) {
+        if (forceRevalidation) {
+            LOGGER.debug("Forced revalidation for {}#{} has been started", fullRepoName, prNo);
+            return handleGithubWebhookValidation(GithubWebhookRequest.buildFromTracking(updatedTracking), vr, wrapper);
+        } else if ("open".equalsIgnoreCase(prResponse.get().getState()) && commitShas.size() != statuses.size()) {
             LOGGER.debug("Validation for {}#{} does not seem to be current, revalidating commits", fullRepoName, prNo);
             // using the updated tracking, perform the validation
             return handleGithubWebhookValidation(GithubWebhookRequest.buildFromTracking(updatedTracking), vr, wrapper);