How to check on preceive hook merge commit?

[Gonchik Tsymzhitov]

Hi! 

We have upgraded Bitbucket to 5.3. from 4.14 version. 

And now our preceive hook can match merge commits.

private final Pattern mergeBranchPattern =
        Pattern.compile("Merge.*");

boolean isMerge = false;
String mergeBranch = "";
Collection<MinimalCommit> parents = cs.getParents();
if (parents.size() > 1) {
 Matcher m = mergeBranchPattern.matcher(comment);
 if (m.find()) {
 isMerge = true;
 mergeBranch = m.group();
 } else {
 rejects.add("Merge commit message should start from word \"Merge...\"");
 return rejects;
 }

Could you help which changes was on 5.3. version for merge commits? 

Thank you

Additional info about Merge strategies: 

Merge commit--no-ff

BR,

Gonchik

[Gonchik Tsymzhitov · Accepted solution]

This condition is helped 

private final String pullRequestEvent ="pull-request-merge";
String eventTrigger = repositoryHookRequest.getTrigger().getId();
if (eventTrigger.equalsIgnoreCase(pullRequestEvent)) {
    log.info("Excepted Merge Pull request");
    return RepositoryHookResult.accepted();
}