elasticsearcher

This agnostic package is a lightweight wrapper on top of the Elasticsearch PHP client. Its main goal is to allow for easier structuring of queries and indices in your application. It does not want to hide or replace functionality of the Elasticsearch PHP client.

Installation

Installation of the latest version is easy via composer:

composer require madewithlove/elasticsearcher

Versions

Elasticsearch	Elasticsearcher
>= 5.0	>= 0.5
>= 2.0	>= 0.4
>= 1.0, < 2.0	0.3

Features

Query class

Structure queries inside a class for clearer oversight in your application.

class MoviesFrom2014Query extends AbstractQuery
{
	public function setup()
	{
		$this->searchIn('movies', 'movies');

		// Full notation
		$body = [
			'query' => [
				'bool' => [
					'filter' => [
						'term' => ['year' => 2014]
					]
				]
			]
		];
		$this->setBody($body);

		// Short (dotted) notation
		$this->set('query.bool.filter.term.year', 2014);

		$this->paginate(2, 20);
		$this->sortBy('name', 'asc');
	}
}

// Usage
$query = new MoviesFrom2014Query($this->getElasticSearcher());
$query->run();

Query with custom/re-usable fragments

Move re-occuring or complex fragments of your query or index to a separate class.

class MoviesFrom2014Query extends AbstractQuery
{
	public function setup()
	{
		$this->searchIn('movies', 'movies');

		$this->set('query.bool.filter', [new YearFilter(2014)]);
	}
}

Query with custom result parsing

Perform actions on the response from Elasticsearch before the Query returns the results. It can be used for converting the Elasticsearch documents into models/entities from your ORM. Re-use it in multiple queries.

class MoviesFrom2014Query extends AbstractQuery
{
	public function setup()
	{
		$this->searchIn('movies', 'movies');
		$this->parseResultsWith(new MoviesResultParser());

		$body = array(...);

		$this->setBody($body);
	}
}

// Usage
$query = new MoviesFrom2014Query($this->getElasticSearcher());
$result = $query->run();
foreach ($result->getResults() as $movie) {
	var_dump($movie->title, $movie->id, $movie->year);
}

Indices management

$searcher->indicesManager()->exists('listings');
$searcher->indicesManager()->existsType('suggestions', 'movies');
$searcher->indicesManager()->create('suggestions');
$searcher->indicesManager()->update('suggestions');
$searcher->indicesManager()->delete('suggestions');
$searcher->indicesManager()->deleteType('suggestions', 'movies');

Documents management

$manager->index('suggestions', 'movies', $data);
$manager->bulkIndex('suggestions', 'movies', [$data, $data, $data]);
$manager->update('suggestions', 'movies', 123, ['name' => 'Fight Club 2014']);
$manager->updateOrIndex('suggestions', 'movies', 123, ['name' => 'Fight Club 2014']);
$manager->delete('suggestions', 'movies', 123);
$manager->exists('suggestions', 'movies', 123);
$manager->get('suggestions', 'movies', 123);

Cluster Health

Sometimes when you're re-indexing your ES data, you might have some issues between your index recreation and indexing your data. That's because ES can take a bit longer to recreate your indexes, causing your reindex task to fail - we are talking about microseconds here. You can find some references here and here.

In order to avoid this, we built this helper in the ElasticSearcher class to check the cluster health. You can use like this:

<?php
/** @var \ElasticSearcher\ElasticSearcher $searcher */
while (!$searcher->isHealthy()) { sleep(1); }

Place this in your reindex command between your index creation and the data indexing.

Attention: If you're running a single ES node, you'll need to configure your elasticsearch number_of_replicas setting to 0. However, we highly recommend you to use at least 2 nodes.

Access to Elasticsearch client

The package does not and will not try to implement everything from the Elasticsearch client. Access to the client is always possible.

$client = $searcher->getClient();

Usage

use ElasticSearcher\Environment;
use ElasticSearcher\ElasticSearcher;

$env = new Environment(
  ['hosts' => ['localhost:9200']]
);
$searcher = new ElasticSearcher($env);

More usage in the examples and documentation.

kirankarki / elasticsearcher Goto Github PK