Meilisearch Go

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⚡ The Meilisearch API client written for Golang

Meilisearch Go is the Meilisearch API client for Go developers.

Meilisearch is an open-source search engine. Learn more about Meilisearch.

Table of Contents

• Table of Contents
• 📖 Documentation
• 🔧 Installation (>= 1.21)
• 🚀 Getting started
  • Add documents
  • Basic Search
  • Custom Search
  • Custom Search With Filters
  • Customize Client
  • Make SDK Faster
  • Using mocks for testing
    • Available Mocks
• 🤖 Compatibility with Meilisearch
• ⚡️ Benchmark Performance
• 💡 Learn more
• ⚙️ Contributing

📖 Documentation

This readme contains all the documentation you need to start using this Meilisearch SDK.

For general information on how to use Meilisearch—such as our API reference, tutorials, guides, and in-depth articles—refer to our main documentation website.

🔧 Installation (>= 1.21)

With go get in command line:

go get github.com/meilisearch/meilisearch-go

Run Meilisearch

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🚀 Getting started

You can use the examples to get started quickly or follow the steps below.

Add documents

package main

import (
	"fmt"
	"os"

	"github.com/meilisearch/meilisearch-go"
)

func main() {
	client := meilisearch.New("http://localhost:7700", meilisearch.WithAPIKey("foobar"))

	// An index is where the documents are stored.
	index := client.Index("movies")

	// If the index 'movies' does not exist, Meilisearch creates it when you first add the documents.
	documents := []map[string]interface{}{
        { "id": 1, "title": "Carol", "genres": []string{"Romance", "Drama"} },
        { "id": 2, "title": "Wonder Woman", "genres": []string{"Action", "Adventure"} },
        { "id": 3, "title": "Life of Pi", "genres": []string{"Adventure", "Drama"} },
        { "id": 4, "title": "Mad Max: Fury Road", "genres": []string{"Adventure", "Science Fiction"} },
        { "id": 5, "title": "Moana", "genres": []string{"Fantasy", "Action"} },
        { "id": 6, "title": "Philadelphia", "genres": []string{"Drama"} },
	}
	task, err := index.AddDocuments(documents, nil)
	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}

	fmt.Println(task.TaskUID)
}

With the taskUID, you can check the status (enqueued, canceled, processing, succeeded or failed) of your documents addition using the task endpoint.

Basic Search

package main

import (
    "fmt"
    "os"

    "github.com/meilisearch/meilisearch-go"
)

func main() {
    // Meilisearch is typo-tolerant:
    searchRes, err := client.Index("movies").Search("philoudelphia",
        &meilisearch.SearchRequest{
            Limit: 10,
        })
    if err != nil {
        fmt.Println(err)
        os.Exit(1)
    }

    fmt.Println(searchRes.Hits)
}

JSON output:

{
  "hits": [{
    "id": 6,
    "title": "Philadelphia",
    "genres": ["Drama"]
  }],
  "offset": 0,
  "limit": 10,
  "processingTimeMs": 1,
  "query": "philoudelphia"
}

Custom Search

All the supported options are described in the search parameters section of the documentation.

func main() {
    searchRes, err := client.Index("movies").Search("wonder",
        &meilisearch.SearchRequest{
            AttributesToHighlight: []string{"*"},
        })
    if err != nil {
        fmt.Println(err)
        os.Exit(1)
    }

    fmt.Println(searchRes.Hits)
}

JSON output:

{
    "hits": [
        {
            "id": 2,
            "title": "Wonder Woman",
            "genres": ["Action", "Adventure"],
            "_formatted": {
                "id": 2,
                "title": "<em>Wonder</em> Woman"
            }
        }
    ],
    "offset": 0,
    "limit": 20,
    "processingTimeMs": 0,
    "query": "wonder"
}

Custom Search With Filters

If you want to enable filtering, you must add your attributes to the filterableAttributes index setting.

task, err := index.UpdateFilterableAttributes(&[]string{"id", "genres"})

You only need to perform this operation once.

Note that Meilisearch will rebuild your index whenever you update filterableAttributes. Depending on the size of your dataset, this might take time. You can track the process using the task status.

Then, you can perform the search:

searchRes, err := index.Search("wonder",
    &meilisearch.SearchRequest{
        Filter: "id > 1 AND genres = Action",
    })

{
  "hits": [
    {
      "id": 2,
      "title": "Wonder Woman",
      "genres": ["Action","Adventure"]
    }
  ],
  "offset": 0,
  "limit": 20,
  "estimatedTotalHits": 1,
  "processingTimeMs": 0,
  "query": "wonder"
}

Customize Client

The client supports many customization options:

• WithCustomClient sets a custom http.Client.
• WithCustomClientWithTLS enables TLS for the HTTP client.
• WithAPIKey sets the API key or master key.
• WithContentEncoding configures content encoding for requests and responses. Currently, gzip, deflate, and brotli are supported.
• WithCustomRetries customizes retry behavior based on specific HTTP status codes (retryOnStatus, defaults to 502, 503, and 504) and allows setting the maximum number of retries.
• DisableRetries disables the retry logic. By default, retries are enabled.

package main

import (
    "net/http"
    "github.com/meilisearch/meilisearch-go"
)

func main() {
	client := meilisearch.New("http://localhost:7700",
        meilisearch.WithAPIKey("foobar"),
        meilisearch.WithCustomClient(http.DefaultClient),
        meilisearch.WithContentEncoding(meilisearch.GzipEncoding, meilisearch.BestCompression),
        meilisearch.WithCustomRetries([]int{502}, 20),
    )
}

Make SDK Faster

We use encoding/json as default json library due to stability and producibility. However, the standard library is a bit slow compared to 3rd party libraries. If you're not happy with the performance of encoding/json, we recommend you to use these libraries:

• goccy/go-json
• bytedance/sonic
• segmentio/encoding
• mailru/easyjson
• minio/simdjson-go
• wI2L/jettison

package main

import (
    "net/http"
    "github.com/meilisearch/meilisearch-go"
    "github.com/bytedance/sonic"
)

func main() {
	client := meilisearch.New("http://localhost:7700",
        meilisearch.WithAPIKey("foobar"),
        meilisearch.WithCustomJsonMarshaler(sonic.Marshal),
        meilisearch.WithCustomJsonUnmarshaler(sonic.Unmarshal),
    )
}

Using Mocks for Testing

This SDK provides generated mocks to facilitate unit testing of your applications. These mocks are located in the mocks package and are generated using mockery, utilizing testify/mock under the hood.

Example

Here is an example demonstrating how to test a function that depends on meilisearch.ServiceManager.

Suppose you have a function CreateMyIndex that interacts with the Meilisearch client:

func CreateMyIndex(client meilisearch.ServiceManager, uid string) error {
	_, err := client.CreateIndex(&meilisearch.IndexConfig{Uid: uid, PrimaryKey: "id"})
	return err
}

You can write a unit test for this function using the generated mock:

package main

import (
	"testing"

	"github.com/meilisearch/meilisearch-go"
	"github.com/meilisearch/meilisearch-go/mocks"
	"github.com/stretchr/testify/assert"
)

func TestCreateMyIndex(t *testing.T) {
	// Create the mock object
	// The naming convention is Mock + PackageName + InterfaceName
	mockClient := mocks.NewMockmeilisearchServiceManager(t)

	// Set up expectations
	// Expect CreateIndex to be called with a specific config, and return a successful TaskInfo and nil error
	expectedConfig := &meilisearch.IndexConfig{Uid: "movies", PrimaryKey: "id"}
	mockClient.On("CreateIndex", expectedConfig).
		Return(&meilisearch.TaskInfo{TaskUID: 1}, nil)

	// Call the code under test
	err := CreateMyIndex(mockClient, "movies")

	// Assertions
	assert.NoError(t, err)

	// Verify that the expectations were met
	mockClient.AssertExpectations(t)
}

Available Mocks

All interfaces in the meilisearch package have corresponding mocks in the mocks directory. Some common ones include:

• ServiceManager: mocks.NewMockmeilisearchServiceManager(t)
• IndexManager: mocks.NewMockmeilisearchIndexManager(t)
• DocumentManager: mocks.NewMockmeilisearchDocumentManager(t)

Ensure you add github.com/stretchr/testify to your test dependencies.

🤖 Compatibility with Meilisearch

This package guarantees compatibility with version v1.x of Meilisearch, but some features may not be present. Please check the issues for more info.

⚡️ Benchmark Performance

The Meilisearch client performance was tested in client_bench_test.go.

goos: linux
goarch: amd64
pkg: github.com/meilisearch/meilisearch-go
cpu: AMD Ryzen 7 5700U with Radeon Graphics

Results

Benchmark_ExecuteRequest-16                  	   10000	    105880 ns/op	    7241 B/op	      87 allocs/op
Benchmark_ExecuteRequestWithEncoding-16      	    2716	    455548 ns/op	 1041998 B/op	     169 allocs/op
Benchmark_ExecuteRequestWithoutRetries-16    	       1	3002787257 ns/op	   56528 B/op	     332 allocs/op

💡 Learn more

The following sections in our main documentation website may interest you:

• Manipulate documents: see the API references or read more about documents.
• Search: see the API references or follow our guide on search parameters.
• Manage the indexes: see the API references or read more about indexes.
• ClientConfigure the index settings: see the API references or follow our guide on settings parameters.

⚙️ Contributing

Any new contribution is more than welcome in this project!

If you want to know more about the development workflow or want to contribute, please visit our contributing guidelines for detailed instructions!

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Meilisearch provides and maintains many SDKs and Integration tools like this one. We want to provide everyone with an amazing search experience for any kind of project. If you want to contribute, make suggestions, or just know what's going on right now, visit us in the integration-guides repository.