How to get the creation date of a tag in BitBucket Server

[mikimicheli]

Using BitBucket Server (aka Stash) version 6.3.0 I am trying to filter tags of a repository according to a specific date range, but can't find the creation date of a tag.

From the API Docs, using the GET /REST/API/1.0/PROJECTS/{PROJECTKEY}/REPOS/{REPOSITORYSLUG}/TAGS API we can order the results by modification date, but the tag object itself does not contain a created/updated field. This is not related to if the tag is annotated or not.

Tag response:

{
    "size": 1,
    "limit": 25,
    "isLastPage": true,
    "values": [
        {
            "id": "release-2.0.0",
            "displayId": "refs/tags/release-2.0.0",
            "type": "TAG",
            "latestCommit": "8d351a10fb428c0c1239530256e21cf24f136e73",
            "latestChangeset": "8d351a10fb428c0c1239530256e21cf24f136e73",
            "hash": "8d51122def5632836d1cb1026e879069e10a1e13"
        }
    ],
    "start": 0
}

The only option I have found so far is to fetch the commit itself, but the date of the commit isn't necessarily the date of the tag as I can create a tag at any point in time regardless of the commit author/commiter date.

Does anyone know of any workaround regarding this that I can use in order to get the creation date of a tag?

[Mikael Sandberg]

Hi @mikimicheli,

Welcome to Atlassian Community.

The only way to get the date of the tag is to use the git show <tag> command, that will give you the date when the tag was created.

[pse-asalar]

I'm also trying to do exactly this. In the Bitbucket cloud rest API we get a date when the tag was created but in the Bitbucket Server we don't. 

If I'm using API calls is because I can't use git commands in the scripts I'm building. Is there any other alternative?

I use the creation date of the tag to compare then with the merge date of pull requests to provide a list of (origin) branches that got merged since the tag was created (in other words: the branch names (not code diffs or commit list) of which changes are not included in the specified tag)