OpenSearch/rest-api-spec/README.markdown

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# Elasticsearch REST API JSON specification
This repository contains a collection of JSON files which describe the [Elasticsearch](http://elasticsearch.org) HTTP API.
Their purpose is to formalize and standardize the API, to facilitate development of libraries and integrations.
Example for the ["Create Index"](http://www.elasticsearch.org/guide/reference/api/admin-indices-create-index/) API:
```json
{
"indices.create": {
"documentation": "http://www.elasticsearch.org/guide/reference/api/admin-indices-create-index/",
"methods": ["PUT", "POST"],
"url": {
"path": "/{index}",
"paths": ["/{index}"],
"parts": {
"index": {
"type" : "string",
"required" : true,
"description" : "The name of the index"
}
},
"params": {
"timeout": {
"type" : "time",
"description" : "Explicit operation timeout"
}
}
},
"body": {
"description" : "The configuration for the index (`settings` and `mappings`)"
}
}
}
```
The specification contains:
* The _name_ of the API (`indices.create`), which usually corresponds to the client calls
* Link to the documentation at <http://elasticsearch.org>
* List of HTTP methods for the endpoint
* URL specification: path, parts, parameters
* Whether body is allowed for the endpoint or not and its description
The `methods` and `url.paths` elements list all possible HTTP methods and URLs for the endpoint;
it is the responsibility of the developer to use this information for a sensible API on the target platform.
# Utilities
The repository contains some utilities in the `utils` directory:
* The `thor api:generate:spec` will generate the basic JSON specification from Java source code
* The `thor api:generate:code` generates Ruby source code and tests from the specs, and can be extended
to generate assets in another programming language
Run `bundle install` and then `thor list` in the _utils_ folder.
## License
This software is licensed under the Apache 2 license.