elastic-hyper

a lightweight implementation of the Elasticsearch API based on Hyper

Programming language: Rust

License: Apache License 2.0

Tags: Database     Nosql     Elasticsearch    

Latest version: v0.8.1

README

elastic_reqwest

Provides a no-fuss, synchronous reqwest implementation of the Elasticsearch REST API. The reqwest client is simple to use; there's basically no setup needed besides creating a reqwest::Client object to use for requests. The reqwest client is general-purpose and suitable for any scenario where on-demand requests are sufficient. It also splits the request process into a few logical methods that could be easily split across asynchronous boundaries.

This library is the HTTP backend for the higher-level elastic client.

Build Status

Platform	Channel	Status
Linux / OSX	Stable / Nightly
Windows	Nightly

Documentation

Version	Docs
current

Alternatives

If you'd prefer to call Elasticsearch using a strongly-typed Query DSL builder, see rs-es.

For a higher-level client that supports strongly-typed response parsing, document mapping see elastic. It uses elastic_reqwest as its HTTP layer.

Example

The elastic_reqwest client is a thin layer over reqwest; it just maps functions to routes. It's up to the caller to serialise and deserialise HTTP content.

• For query serialisation, the json_str crate provides the json_str! macro for creating ad-hoc API queries.
• For type serialisation / deserialisation, see elastic_types.

Currently targeting the master Elasticsearch branch, aiming for 5.x. This will be stabilised through features in the future.

Add elastic_reqwest and json_str to your Cargo.toml:

[dependencies]
elastic_reqwest = "*"
reqwest = "*"

# Optional for request bodies
json_str = "*"

Ping the availability of your cluster:

extern crate elastic_reqwest as cli;
extern crate reqwest;

use cli::{ElasticClient, ParseResponse, parse};
use cli::req::PingRequest;
use cli::res::PingResponse;

let (client, params) = cli::default().unwrap();

let http_res = client.elastic_req(&params, PingRequest::new()).unwrap();

let parse_res = parse::<PingResponse>().from_response(http_res).unwrap();

Customise the location of the Elasticsearch cluster:

 let (mut client, mut params) = elastic::default();
 params.base_url = String::from("http://eshost:9200");

A query DSL query:

#[macro_use]
extern crate json_str;
extern crate elastic_reqwest as cli;
extern crate reqwest;

use cli::{ElasticClient, ParseResponse, parse};
use cli::req::SearchRequest;
use cli::res::SearchResponse;

let (client, params) = cli::default().unwrap();

let search = {
    let body = json_str!({
        query: {
            filtered: {
                query: {
                    match_all: {}
                },
                filter: {
                    geo_distance: {
                        distance: "20km",
                        location: {
                            lat: 37.776,
                            lon: -122.41
                        }
                    }
                }
            }
        }
    });

    SearchRequest::for_index_ty("myindex", "mytype", body)
};

let http_res = client.elastic_req(&params, search).unwrap();

let search_res = parse::<SearchResponse>().from_response(http_res).unwrap();