[Ruby Elasticsearch client examples]

elasticsearch.rb

# GET shards
num_shards_in_use = client.cluster.stats['indices']['shards']['total']

# GET docs
response = client.search(index: 'index_name', q: '!2022-10-11 AND !2022-10-12 AND !2022-10-13', df: 'date', _source_includes: ['name', 'date'])
docs = response['hits']['hits']
num_docs = response['hits']['total']['value']

# GET indices
all_indices = client.indices.stats['indices'].map(&:first)
my_indices = client.indices.stats(index: "my_*")['indices'].map(&:first)

# DELETE docs
delete_response = client.delete_by_query(index: 'index_name', q: '!2022-10-11 AND !2022-10-12 AND !2022-10-13', df: 'date', body: {})
num_deleted_docs = delete_response['deleted']

# DELETE indices
client.indices.delete(index: 'index_name')