Block pull requests between branch types

[Justin Rush]

My organization uses Stash v3.11.1 and the plugin Adaptavist ScriptRunner. An issue has recently come up where we want to prevent the user from creating pull requests between certain branches with a given prefix. 

For example we want to block any branch with the prefix "team/" from being able to be merged into a branch that is prefixed with "release/"

team/a_team_branch ---> release/v1.0    would be blocked and pull request not created

bugfix/a_users_bugfix_branch ---> release/v1.0     a pull request could be created

How would I go about doing this with ScriptRunner?

[JamieA]

You want Admin -> Script Event Handlers, new Custom event handler.

Event to listen for is: PullRequestOpenRequestedEvent

Code (put in file or enter directly):

import com.atlassian.bitbucket.event.pull.PullRequestOpenRequestedEvent

def event = event as PullRequestOpenRequestedEvent
def from = event.pullRequest.fromRef.displayId
def to = event.pullRequest.toRef.displayId

if (from.startsWith("team/") && to.startsWith("release/")) {
    event.cancel("Don't create PR from team/* to release/* ... target branch should be Xyz")
}

Should result in:

http://postimg.org/image/aafyd6ykt/

(image upload seems broken).