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Quick Start with Qdrant using GRPC

DISCLAIMER: The GRPC API for Qdrant are under development and disabled by default in production builds. Limited functionality is exposed at the moment. This draft tutorial is for testing and internal use only.

Install grpcurl

This tutorial would use the grpcurl command line tool in order to perform grpc requests. Please follow the steps provided in the grpcurl repository in order to install it.

Build Qdrant with GRPC feature

The GRPC feature is disabled by default in order not to impact the production binary until complete. In order to run qdrant with grpc feature enabled, executed the following command:

QDRANT__SERVICE__GRPC_PORT="6334" cargo run --bin qdrant

It will run qdrant exposing both json and grpc API. If you do not want to use JSON API, add --no-default-features flag as well:

QDRANT__SERVICE__GRPC_PORT="6334" cargo run --no-default-features --bin qdrant

Note that actix is not compiled in this case.

GRPC Service Health Check

Execute the following command

grpcurl -plaintext -import-path ./lib/api/src/grpc/proto/ -proto qdrant.proto -d '{}' 0.0.0.0:6334 qdrant.Qdrant/HealthCheck

Here and below the ./lib/api/src/grpc/proto/ should be a path to the folder with a probuf schemas. Expected response:

{
  "title": "qdrant - vector search engine",
  "version": "<vesion>"
}

Collections

Create collection

First - let's create a collection with dot-production metric.

grpcurl -plaintext -import-path ./lib/api/src/grpc/proto/ -proto qdrant.proto -d '{
        "collection_name": "test_collection",
        "vectors_config": {
            "params": {
                "size": 4,
                "distance": "Dot"
            }
        }
    }' \
0.0.0.0:6334 qdrant.Collections/Create

Expected response:

{
  "result": true,
  "time": 0.482865481
}

List all collections

We can now view the list of collections to ensure that the collection was created:

grpcurl -plaintext -import-path ./lib/api/src/grpc/proto/ -proto qdrant.proto 0.0.0.0:6334 qdrant.Collections/List

Expected response:

{
  "collections": [
    {
      "name": "test_collection"
    }
  ],
  "time": 9.4219e-05
}

Update collection

The collection could also be updated:

grpcurl -plaintext -import-path ./lib/api/src/grpc/proto/ -proto qdrant.proto -d '{
        "collection_name": "test_collection",
        "optimizers_config": {
          "max_segment_size": 100
        }
    }' \
0.0.0.0:6334 qdrant.Collections/Update

Add points

Let's now add vectors with some payload:

grpcurl -plaintext -import-path ./lib/api/src/grpc/proto/ -proto qdrant.proto -d '{
  "collection_name": "test_collection",
  "wait": true,
  "points": [
    {
      "id": {
        "num": 1
      },
      "vector": [0.05, 0.61, 0.76, 0.74],
      "payload": {
        "city": "Berlin",
        "country": "Germany",
        "population": 1000000,
        "square": 12.5,
        "coords": { "lat": 1.0, "lon": 2.0 }
      }
    },
    {"id": {"num": 2}, "vector": [0.18, 0.01, 0.85, 0.80], "payload": {"square": [10, 11] }},
    {"id": {"num": 3}, "vector": [0.24, 0.18, 0.22, 0.45], "payload": {"count": [0] }},
    {"id": {"num": 4}, "vector": [0.24, 0.18, 0.22, 0.45], "payload": {"coords": [{ "lat": 1.0, "lon": 2.0}, { "lat": 3.0, "lon": 4.0}]}},
    {"id": {"num": 5}, "vector": [0.35, 0.08, 0.11, 0.44]}
  ]
}' \
0.0.0.0:6334 qdrant.Points/Upsert

Expected response:

{
  "result": {
    "status": "Completed"
  },
  "time": 0.004128988
}

Delete collection

The qdrant.Collections/UpdateCollections rpc could also be used to delete a collection:

grpcurl -plaintext -import-path ./lib/api/src/grpc/proto/ -proto qdrant.proto -d '{
          "collection_name": "test_collection"
    }' \
0.0.0.0:6334 qdrant.Collections/Delete