elasticsearchHow can I use Python to access data stored in Elasticsearch?
You can use the official Python client for Elasticsearch, elasticsearch-py
, to access data stored in Elasticsearch. Here is an example of how to connect to an Elasticsearch cluster and query it using elasticsearch-py
:
from elasticsearch import Elasticsearch
# Connect to the Elasticsearch cluster
es = Elasticsearch([{'host': 'localhost', 'port': 9200}])
# Query the cluster
res = es.search(index="my_index", body={"query": {"match_all": {}}})
# Print the response
print(res)
Output example
{'took': 5,
'timed_out': False,
'_shards': {'total': 5, 'successful': 5, 'skipped': 0, 'failed': 0},
'hits': {'total': {'value': 4, 'relation': 'eq'},
'max_score': 1.0,
'hits': [{'_index': 'my_index',
'_type': '_doc',
'_id': '1',
'_score': 1.0,
'_source': {'field1': 'value1', 'field2': 'value2'}},
{'_index': 'my_index',
'_type': '_doc',
'_id': '2',
'_score': 1.0,
'_source': {'field1': 'value3', 'field2': 'value4'}},
{'_index': 'my_index',
'_type': '_doc',
'_id': '3',
'_score': 1.0,
'_source': {'field1': 'value5', 'field2': 'value6'}},
{'_index': 'my_index',
'_type': '_doc',
'_id': '4',
'_score': 1.0,
'_source': {'field1': 'value7', 'field2': 'value8'}}]}}
The code above does the following:
- Imports the
elasticsearch
module fromelasticsearch-py
. - Connects to an Elasticsearch cluster using the
Elasticsearch
class. - Queries the cluster using the
search()
method. - Prints the response from the query.
For more information, see the elasticsearch-py
documentation.
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See more codes...