private boolean updateBranch(OpenRepo or, Branch.NameKey destBranch, IdentifiedUser caller)
throws IntegrationException {
OpenBranch ob = or.getBranch(destBranch);
CodeReviewCommit currentTip = ob.getCurrentTip();
if (Objects.equals(ob.oldTip, currentTip)) {
if (currentTip != null) {
logDebug("Branch already at merge tip {}, no update to perform", currentTip.name());
} else {
logDebug("Both branch and merge tip are nonexistent, no update");
}
return false;
} else if (currentTip == null) {
logDebug("No merge tip, no update to perform");
return false;
}
if (RefNames.REFS_CONFIG.equals(ob.update.getName())) {
logDebug("Loading new configuration from {}", RefNames.REFS_CONFIG);
try {
ProjectConfig cfg = new ProjectConfig(or.getProjectName());
cfg.load(or.repo, currentTip);
} catch (Exception e) {
throw new IntegrationException(
"Submit would store invalid"
+ " project configuration "
+ currentTip.name()
+ " for "
+ or.getProjectName(),
e);
}
}
ob.update.setRefLogIdent(identifiedUserFactory.create(caller.getAccountId()).newRefLogIdent());
ob.update.setForceUpdate(false);
ob.update.setNewObjectId(currentTip);
ob.update.setRefLogMessage("merged", true);
try {
RefUpdate.Result result = ob.update.update(or.rw);
logDebug(
"Update of {}: {}..{} returned status {}",
ob.update.getName(),
ob.update.getOldObjectId(),
ob.update.getNewObjectId(),
result);
switch (result) {
case NEW:
case FAST_FORWARD:
if (ob.update.getResult() == RefUpdate.Result.FAST_FORWARD) {
tagCache.updateFastForward(
destBranch.getParentKey(),
ob.update.getName(),
ob.update.getOldObjectId(),
currentTip);
}
if (RefNames.REFS_CONFIG.equals(ob.update.getName())) {
Project p = or.project.getProject();
projectCache.evict(p);
or.project = projectCache.get(p.getNameKey());
repoManager.setProjectDescription(p.getNameKey(), p.getDescription());
}
return true;
case LOCK_FAILURE:
throw new IntegrationException("Failed to lock " + ob.update.getName());
default:
throw new IOException(ob.update.getResult().name() + '\n' + ob.update);
}
} catch (IOException e) {
throw new IntegrationException("Cannot update " + ob.update.getName(), e);
}
}
