How to create attachment in Bitbucket Server by Java API

[Johannes Heger]

In a Bitbucket Server add-on I like to create pull request comments of more than 32kB length. But the length is limited to that.

My idea is to create a text-file and attach it by Java API to that pull request.

There is the class com.atlassian.stash.internal.attach.AttachmentService in bitbucket-service-api-4.14.7.jar, but it seems to be internal only and not reachable at runtime from within my add-on.

Any ideas how to create an attachment? Or in general, how to add that information to a pull request?

Kind regards, Johannes

[dmitry]

Relevant for those who are below 7.x, above packages changed. and the type that is returned from attachmentService is now different. But that code should be the inspiration 

import com.atlassian.stash.internal.attach.AttachmentService
import com.atlassian.stash.internal.attach.AttachmentSupplier
import java.nio.charset.StandardCharsets
import com.atlassian.bitbucket.comment.AddCommentRequest
import com.atlassian.bitbucket.comment.AddCommentRequest.Builder



def PullRequest epr = event.getPullRequest();
def fromRefId = epr.fromRef.getId();
def toRefId = epr.toRef.getId();
def mergeCommit = event.commit.displayId

def StringBuilder sb = new StringBuilder();

epr.changesets.each{changeset -> changeset.changes.values.each{ change -> sb.append( change.getType().name() + " " + change.getPath() + "\n") } }

def att = attachmentService.save(event.repository, new AttachmentSupplier(){

public String getName(){
return "hoc.txt";
}

public long getSize(){
return sb.length();
}

public InputStream open(){
return new ByteArrayInputStream(sb.toString().getBytes(StandardCharsets.UTF_8));
}

})

def AddCommentRequest commentRequest = new AddCommentRequest.Builder(epr, "[hoc.txt](attachment:192/" + att +")").build();
commentService.addComment(commentRequest);