Hey all!

I'm using localstack for a project where I consume data from kinesis, process it and put it in elasticsearch.

In the later versions of localstack 'elasticsearch' was removed and is now lazily loaded after call to es::CreateElasticsearchDomain (at least that's how I understand it from #1881, #1865, #1870).

I'm running localstack in a docker using testcontainers (which gives me dynamic port mappings etc). My processing code is running on localhost.

The problem I'm facing now is that the response from es::CreateElasticsearchDomain returns an elasticsearch endpoint like: http://[docker container id]:port.
With my set up, this gives me two issues:
1. [docker container id] host is not (I believe) reachable from localhost unless I add it to /etc/hosts or something like that. I can surely "hack" my way around this by just replacing [docker container id] with localhost.
2. It says here: https://github.com/localstack/localstack/issues/1881#issuecomment-567495056 that we should not assume that elasticsearch will run on a static port in the future. When running localstack in a docker, how would I know which port to expose then in order to reach elasticsearch from localhost?

I currently have my tests running using 1.10.7 but there I just make a dummy call to es::CreateElasticsearchDomain and hardcode elasticsearch endpoint to http://localhost:4571. (It seems like it always chooses 4571 as of now?)

Thanks
Stefan
result = [{
        'SourceVersion': '6.5',
        'TargetVersions': ['6.7', '6.8']
    }, {
        'SourceVersion': '6.7',
        'TargetVersions': ['6.8']
    }, {
        'SourceVersion': '6.8',
        'TargetVersions': ['7.1']
    }]
    return jsonify({'CompatibleElasticsearchVersions': result})
@app.route('%s/tags' % API_PREFIX, methods=['GET', 'POST'])
def add_list_tags():
    if request.method == 'POST':
        data = json.loads(to_str(request.data) or '{}')
        arn = data.get('ARN')
        TAGS.tag_resource(arn, data.get('TagList', []))
    if request.method == 'GET' and request.args.get('arn'):
        arn = request.args.get('arn')
        tags = TAGS.list_tags_for_resource(arn)
        response = {
            'TagList': tags.get('Tags')
        }
        return jsonify(response)
    return jsonify({})
def serve(port, quiet=True):
    generic_proxy.serve_flask_app(app=app, port=port, quiet=quiet)