Merge branch 'stable-3.8' into stable-3.9

* stable-3.8:
  Verify high-availability formatting using GJF 1.7
  Check for existence of change's target SHA1 for reindexing
  Remove `@NoHttpd` from IT tests that interact with Gerrit Rest API

Change-Id: Ie1c0db0578d460a7a31da3ab49468cf7627f89bc

Jenkinsfile

diff --git a/Jenkinsfile b/Jenkinsfile
index 98183a5..503cf93 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -1,3 +1,4 @@
 pluginPipeline(formatCheckId: 'gerritforge:plugins-high-availability-code-style',
                buildCheckId: 'gerritforge:plugins-high-availability-build-test',
+               gjfVersion: '1.7',
                extraModules: ['global-refdb'])

src/main/java/com/ericsson/gerrit/plugins/highavailability/index/ChangeCheckerImpl.java

diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/index/ChangeCheckerImpl.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/index/ChangeCheckerImpl.java
index 9236399..af730b7 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/index/ChangeCheckerImpl.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/index/ChangeCheckerImpl.java
@@ -31,6 +31,7 @@
 import java.sql.Timestamp;
 import java.util.Objects;
 import java.util.Optional;
+import org.eclipse.jgit.lib.ObjectId;
 import org.eclipse.jgit.lib.Ref;
 import org.eclipse.jgit.lib.Repository;
 
@@ -107,9 +108,9 @@
           return (computedChangeTs.get() > indexEvent.eventCreatedOn)
               || (computedChangeTs.get() == indexEvent.eventCreatedOn)
                   && (Objects.isNull(indexEvent.targetSha)
-                      || Objects.equals(getBranchTargetSha(), indexEvent.targetSha))
-                  && (Objects.isNull(indexEvent.metaSha)
-                      || Objects.equals(getMetaSha(repo), indexEvent.metaSha));
+                      || repositoryHas(repo, indexEvent.targetSha))
+                  && (Objects.isNull(indexEvent.targetSha)
+                      || repositoryHas(repo, indexEvent.metaSha));
         }
       }
       return true;
@@ -161,6 +162,16 @@
     }
   }
 
+  private boolean repositoryHas(Repository repo, String sha1ToCheck) {
+    try {
+      return repo.parseCommit(ObjectId.fromString(sha1ToCheck)) != null;
+    } catch (IOException e) {
+      log.atWarning().withCause(e).log(
+          "Unable to find SHA1 %s for change %s", sha1ToCheck, changeId);
+      return false;
+    }
+  }
+
   private Optional<Long> computeLastChangeTs() {
     return getChangeNotes().map(this::getTsFromChangeAndDraftComments);
   }