How to get a List of Indices from ElasticSearch using Jest

Get Aliases will give you all the aliases for the indices on a node.

One can simply navigate a browser to the following URL to get the indexes available on an ElasticSearch cluster.

http://elasticsearch.company.com/_aliases

This will return an array of indexes and their aliases in JSON. Here's an example:

{    "compute-devzone1": { },    "compute-den2": { },    "compute-den1": { },    ...}

To get the list of indexes with Jest, use this code...

  HttpClientConfig config;  JestClientFactory factory;  JestClient client;  GetAliases aliases;  JestResult result;  String json;  config = new HttpClientConfig.     Builder("http://elasticsearch.company.com").     build();  aliases = new GetAliases.     Builder().     build();  factory = new JestClientFactory();  factory.setHttpClientConfig(config);  client = factory.getObject();  result = client.execute(aliases);  json   = result.getJsonString();

Use your favorite JSON processor to extract the indexes from json.

Use:

JestResult result = elasticSearchClient.execute(new Cat.IndicesBuilder().build());

This will return a JSON response just like curl -XGET "localhost:9200/_cat/indices?format=json"