Dynamically initializing Index-Name via a Decorator.

[gk-patel]

Hi,

first of all thank you very much for this wonderful library, it has been an amazing experience developing with library.

My current version: 6.3.1

I am facing problems while trying to dynamically give Index-Name (and Meta-data) to a Document Class. I am basically trying to do this by creating a decorator. Here is my code,

# my decorator, which I want to use to decorate the Document Class
def init_index_name(Cls): 

    # some logic to dynamically derive the index-name 
    indexName = 'dynamic_index_name'

    # initize an object of class Index, with the derived index-name 
    idxObj = Index(name=indexName))

    #add Index property to the decorated Class
    idxObj.document(Cls)

    # initialize the Index in ES 
    Cls.init()

    return Cls

# my document class 
@init_index_name
class tempIndex(Document): 
    tag = Keyword(multi=True)
    value = Integer()

Using this code, I am unable to set my Index-Name, and I get the following Error,

File "/home/gpatel/anaconda3/lib/python3.6/site-packages/elasticsearch_dsl/index.py", line 289, in save
    current_settings = self.get_settings(using=using)[self._name]['settings']['index']
KeyError: '*'

Also, could you tell me how can I dynamically add "meta-data" to the Index I am creating. For example, if I want to add the version of my software that created the Index. Just to be on the same page, I am refering to this https://www.elastic.co/guide/en/elasticsearch/reference/current/mapping-meta-field.html.

Once again, thank you very much for the library and also, for your help with all the Issues.

[honzakral]

This is a duplicate of #1091, closing this issue to keep the discussion in one place.

[gk-patel]

Hi @honzakral,

You are right, my Issue is very similar to the other issue.

Nonetheless, their was a second small question at the end, and I wish you can still help me it. Specifically,

How can I dynamically add "meta-data" to the Index I am creating. For example, if I want to add the version of my software that created the Index. Just to be on the same page, I am refering to this https://www.elastic.co/guide/en/elasticsearch/reference/current/mapping-meta-field.html.