Elasticsearch APIs

1. Ingest API: Ingest data in JSON format. Supports reading json data from file.

   Example:

   Using json file:

   curl -X POST http://localhost:8081/elastic/_bulk \
   -H 'Content-Type: application/json' \
   --data-binary "@sampleEvents.json" 

   Using raw json:

   curl -X POST "http://localhost:8081/elastic/_bulk" \
   -H 'Content-Type: application/json' \
   -d '{ "index" : { "_index" : "test" } }
   { "name" : "john", "age":"23" }'

2. Get elasticsearch cluster information:

   curl  http://localhost:8081/elastic/
   curl -X GET "http://localhost:8081/elastic/"
   curl -X GET "http://localhost:8081/elastic/_xpack"

   Example Output:

   {"name":"local","cluster_name":"siglens","cluster_uuid":"398fb430-f809-4f4c-88a7-95a5a1c28738","version":{"number":"7.9.3","build_flavor":"oss","build_type":"tar","build_date":"2021-10-07T21:56:19.031608185Z","build_hash":"83c34f456ae29d60e94d886e455e6a3409bba9ed","build_snapshot":false,"lucene_version":"8.9.0","minimum_wire_compatibility_version":"6.8.0","minimum_index_compatibility_version":"6.0.0-beta1"}}

3. Create a new elasticsearch index

   curl -X PUT http://localhost:8081/elastic/{indexName}

4. Query / search ingested data

   GET /elastic/_search
   GET /elastic/{indexName}/_search
   POST /elastic/_search
   POST /elastic/{indexName}/_search
   POST /elastic/{indexName}/_doc/_search
   GET /elastic/{indexName}/{docType}/_search
   POST /elastic/{indexName}/{docType}/_search 

   Examples:

   curl -X GET http://localhost:5122/elastic/_search  \
       -d'{"query": {"match_all": {}}, "size": 2}'
   
   curl -X GET http://localhost:5122/elastic/ind-0/_search  \
       -d'{"query": {"match_all": {}}, "size": 2}'
   
   curl -X POST http://localhost:5122/elastic/_search  \
       -d'{"query": {"match_all": {}}}'
   
   curl -X POST http://localhost:5122/elastic/ind-0/_search  \
       -d '{"query":{"bool":{"must":{"term": {"weekday": "Saturday"}}}},"size": 1}' 
   
   curl -X POST http://localhost:5122/elastic/ind-0/_doc/_search  \
       -d '{"query":{"bool":{"must":{"term": {"weekday": "Saturday"}}}},"size": 1}' 

5. Delete index

   curl -X DELETE http://localhost:5122/elastic/{indexName}

6. Create index alias

   curl -X POST http://localhost:5122/elastic/_aliases 
   curl -X PUT http://localhost:5122/elastic/{indexName}/_alias/{aliasName}
   curl -X POST http://localhost:5122/elastic/{indexName}/_alias/{aliasName}

   Example:

   curl -X POST http://localhost:5122/elastic/_aliases \
   -d'{"actions" : [{ "add" : { "index" : "ind-0", "alias" : "alias1" } }]}'
   
   curl -X PUT http://localhost:5122/elastic/ind-0/_alias/ddd

7. Create multiple index aliases

   curl -X PUT http://localhost:5122/elastic/{indexName}/_aliases/{aliasName}
   curl -X POST http://localhost:5122/elastic/{indexName}/_aliases/{aliasName}

   Example:

   curl -X PUT http://localhost:5122/elastic/ind-0/_aliases/{ind-alias1,ind-alias2}

8. Get index alias

   curl -X GET http://localhost:5122/elastic/_aliases
   curl -X GET http://localhost:5122/elastic/_cat/aliases
   curl -X GET http://localhost:5122/elastic/_alias/{aliasName}

   Example:

   curl -X GET http://localhost:5122/elastic/_alias/ind-alias1
   
   Output:
   {"ind-0":{"aliases":{"ddd":{},"alias1":{},"ind-alias1":{},"ind-alias2":{}}}}%