How to check on preceive hook merge commit?

Gonchik Tsymzhitov Community Champion Sep 25, 2017



We have upgraded Bitbucket to 5.3. from 4.14 version. 

And now our preceive hook can match merge commits.

private final Pattern mergeBranchPattern =
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 =;
} 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





1 answer

1 accepted

This condition is helped 

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


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