request-converter

Library that converts Elasticsearch requests in Dev Console syntax to other formats.

Check out the documentation.

Installation

npm install @elastic/request-converter

Usage

import { convertRequests } from "@elastic/request-converter";

const devConsoleScript = `GET /my-index-000001/_search?from=40&size=20
{
  "query": {
    "term": {
      "user.id": "kimchy"
    }
  }
}`

async function main() {
  const code = await convertRequests(devConsoleScript, "python", {
    checkOnly: false,
    printResponse: true,
    complete: true,
    elasticsearchUrl: "http://localhost:9200",
  });
  console.log(code);
}

main();

The list of available formats that can be passed in the second argument can be obtained as follows:

import { listFormats } from "@elastic/request-converter";

const formats = listFormats();

The ouput code in the example above would look like this:

import os
from elasticsearch import Elasticsearch

client = Elasticsearch(
    hosts=["http://localhost:9200"],
    api_key=os.getenv("ELASTIC_API_KEY"),
)

resp = client.search(
    index="my-index-000001",
    from_="40",
    size="20",
    query={
        "term": {
            "user.id": "kimchy"
        }
    },
)

When using Node and JavaScript, you can import the functions in this library as follows:

const { convertRequests, listFormats } = require("@elastic/request-converter");

Available Formats

At this time the converter supports curl and python. Work is currently in progress to add support for javascript, ruby and php.

curl

The curl exporter generates commands for the terminal using the curl command line HTTP client.

Supported options:

| Option name | Type | Required | Description | | ----------- | ---- | -------- | ----------- | | elasticsearchUrl | string | no | The Elasticsearch endpoint to use in the generated commands. The default is http://localhost:9200. | | windows | boolean | no | If true, use PowerShell escaping rules for quotes. If false, use bash/zsh escaping rules. The default is false. |

python

The Python exporter generates code for the Elasticsearch Python client.

Supported options:

| Option name | Type | Required | Description | | ----------- | ---- | -------- | ----------- | | printResponse | boolean | no | If true, add code to print the response. The default is false. | | complete | boolean | no | If true, generate a complete script. If false, only generate the request code. The default is false. | | elasticsearchUrl | string | no | The Elasticsearch endpoint to use. The default is http://localhost:9200. |

Command-Line Interface

For convenience, a CLI that wraps the convertRequests function is also available.

$ echo GET / > request.txt
$ node_modules/.bin/es-request-converter --format python --complete < request.txt
import os
from elasticsearch import Elasticsearch

client = Elasticsearch(
    hosts=[os.getenv("ELASTICSEARCH_URL")],
    api_key=os.getenv("ELASTIC_API_KEY"),
)

resp = client.info()

Using a Custom Exporter

Instead of passing the name of one of the available exporters, you can pass a custom exporter instance.

To define a custom exporter format, create a class that implements the FormatExporter interface. Here is an example exporter that outputs the name of the API used in the request:

import { FormatExporter, convertRequests } from "@elastic/request-converter";

class MyExporter implements FormatExporter {
  async check(requests: ParsedRequest[]): Promise<boolean> { return true; }
  async convert(requests: ParsedRequest[], options: ConvertOptions): Promise<string> {
    return requests.map(req => req.api).join("\n");
  }
}

const apis = await convertRequests("GET /my-index/_search\nGET /\n", new MyExporter(), {});
console.log(apis); // outputs "search\ninfo"