Typesense (rust library)

Community-maintained Rust client library for Typesense | Work In Progress & Help Wanted!

Collection schema derive

Apply #[derive(Typesense)] to any struct you want to index in Typesense. The macro generates:

• a collection_schema() definition based on your struct fields and attributes.
• a {struct_name}Partial struct for partial updates of Typesense documents.

Quick example

#[derive(Typesense, Serialize, Deserialize)]
#[typesense(
    collection_name = "mega_products",
    default_sorting_field = "price",
    symbols_to_index = ["+", "-"]
)]
struct MegaProduct {
    id: String,

    #[typesense(infix, stem)]
    title: String,

    #[typesense(facet)]
    brand: String,

    #[typesense(sort)]
    price: f32,

    #[typesense(rename = "product_name", sort = true)]
    #[serde(rename = "product_name")]
    official_name: String,
}

// update a Typesense document using the generated partial struct
let update_payload = MegaProductPartial {
    price: Some(25.99),
    ..Default::default()
};

let result = client
    .collection::<MegaProduct>()
    .document("product-1")
    .update(&update_payload, None)
    .await;

Supported collection parameters

Supported field parameter

All boolean attributes can be either set to true using shorthand flags or explicitly set a value =true/false. Example:

#[typesense(facet)]
brand: String,

#[typesense(facet = false)]
weight: f32,

Indexing nested objects

When you have fields that are also structs, you need to mark all structs with #[derive(Typesense)]. The generated Typesense schema for those fields will have type of object (or object[] if the field is a vector).

Applying #[typesense(flatten)] on a field will expand the nested field schemas into the parent.

#[typesense(flatten)]
supplier: SupplierInfo,

If the field has a rename:

#[typesense(flatten, rename = "logistics_data")]
logistics: Logistics,

flattened fields become logistics_data.field_name.

#[typesense(flatten, skip)] produces only the flattened fields and omits the parent object field.

Nested objects example:

#[derive(Typesense, Serialize, Deserialize)]
struct ProductDetails {
    #[typesense(facet)]
    part_number: String,
    #[typesense(skip)]
    description: String,
}

#[derive(Typesense, Serialize, Deserialize)]
#[typesense(
    collection_name = "mega_products",
)]
struct MegaProduct {
    #[typesense(flatten)]
    details: ProductDetails,
}

Will generate this schema:

{
    "name": "mega_products"
    "fields": [
        {"name": "details", "type": "object"}, // <-- `#[typesense(flatten, skip)]` will omit this field
        {"name": "details.part_number", "type": "string", "facet": true}
        // `description` is skipped
    ],
}

Development

When updating or adding new parameters and endpoints, make changes directly in the Typesense API spec repository.

Once your changes are merged, you can update this project as follows (you can also run tasks individually):

cargo xtask fetch preprocess code-gen

This will:

• Download the latest API spec.
• Write it to our local openapi.yml.
• Preprocess it into preprocessed_openapi.yml.
• Regenerate the /typesense_codegen crate.

The preprocessing step does two things:

• Flatten the URL params defined as objects into individual URL parameters (in preprocess_openapi.rs)
• Inject OpenAPI vendor attributes (e.g., generic parameters, schema builders) into the spec before code generation (in add_vendor_attributes.rs)

You can also run code-gen directly through Docker:

docker run --rm \
    -v $PWD:/local openapitools/openapi-generator-cli generate \
    -i /local/preprocessed_openapi.yml \
    -g rust \
    -o /local/typesense_codegen \
    -t /local/openapi-generator-template \
    --additional-properties library=reqwest \
    --additional-properties supportMiddleware=true \
    --additional-properties useSingleRequestParameter=true

Testing

Make sure you have a Typesense server up and running:

docker compose up

Then run this command in the root folder to run the integration tests:

cargo test-clean -- --all-features

This is an alias command which will run a script to clean up your Typesense server after the tests finish. You can pass any arguments of cargo test after the --.

To run test for wasm (chrome, headless):

cargo test-clean --wasm

If you'd like to contribute, please join our Slack Community and say hello!