How to check if an index exists in elasticsearch using a python script and perform exception handling over it?

Question

How do I check whether an index exists or not using a python query?

I'm passing my index as a variable assigned outside the query as :-

 i=int(datetime.datetime.now().strftime('%d'))+1
indextring="index"
for m in range (i-10,i):
    d = datetime.datetime(2016, 10, m, 18, 00).strftime('%Y-%m-%d')
    index1=datestring+d
    subfix="_"+datetime.datetime(2016, 10, m, 18, 00).strftime('%Y-%m-%d')
    es=Elasticsearch(['localhost:9200'])
    res = **es.search(index='{0}'.format(index1)**, doc_type="log",size=10000, from_=0, body={ "query": {
    "match": {
     ....Match condition follows
      }
    }
  }})

Now, some of the index are not present for a particular date, however I want the process to run irrespective of that. I'm getting the following error when the index is not present-->

elasticsearch.exceptions.NotFoundError: TransportError(404, u'index_not_found_exception')

I'm not sure how the exception handling works in elasticsearch.

You should try using the exists API call to check if an index exists. — Val
– Val, Commented Oct 28, 2016 at 7:37
Tried it, can you look at my comment below to tcarmet's reply — Mayank Jha
– Mayank Jha, Commented Oct 28, 2016 at 10:51

ChintanShah25 · Accepted Answer · 2016-10-28 13:49:41Z

74

You have to call it on indices. Currently you are using exists of search class which tells you whether given document exists in the index and not the index itself.

Try this code

if es.indices.exists(index="index"):
    Your code for search

There are also more options if you want to use.

answered Oct 28, 2016 at 13:49

ChintanShah25

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Zak_Stack · Accepted Answer · 2022-10-11 14:16:03Z

0

for i in index_list:
    if es.indices.exists(index=i):
        print("ok",i)
    else:
        print(i)

to ckeck a list of indexes if they are available or not

answered Oct 11, 2022 at 14:16

Zak_Stack

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