landing_page/qdrant-landing/content/documentation/headless/snippets/tutorial-semantic-search-101/go.go

package snippet

import (
	"context"
	"fmt"

	"github.com/qdrant/go-client/qdrant"
)

func Main() {
	// @hide-start
	QDRANT_URL := ""
	QDRANT_API_KEY := ""
	// @hide-end
	// @block-start client-connection
	client, err := qdrant.NewClient(&qdrant.Config{
		Host:   QDRANT_URL,
		APIKey: QDRANT_API_KEY,
		UseTLS: true,
	})
	// @block-end client-connection

	// @hide-start
	if err != nil {
		panic(err)
	}
	// @hide-end

	// @block-start create-collection
	collectionName := "my_books"

	client.CreateCollection(context.Background(), &qdrant.CreateCollection{
		CollectionName: collectionName,
		VectorsConfig: qdrant.NewVectorsConfig(&qdrant.VectorParams{
			Size:     384, // Vector size is defined by used model
			Distance: qdrant.Distance_Cosine,
		}),
	})
	// @block-end create-collection

	// @block-start upload-data
	documents := []map[string]any{
		{
			"name":        "The Time Machine",
			"description": "A man travels through time and witnesses the evolution of humanity.",
			"author":      "H.G. Wells",
			"year":        1895,
		},
		{
			"name":        "Ender's Game",
			"description": "A young boy is trained to become a military leader in a war against an alien race.",
			"author":      "Orson Scott Card",
			"year":        1985,
		},
		{
			"name":        "Brave New World",
			"description": "A dystopian society where people are genetically engineered and conditioned to conform to a strict social hierarchy.",
			"author":      "Aldous Huxley",
			"year":        1932,
		},
		{
			"name":        "The Hitchhiker's Guide to the Galaxy",
			"description": "A comedic science fiction series following the misadventures of an unwitting human and his alien friend.",
			"author":      "Douglas Adams",
			"year":        1979,
		},
		{
			"name":        "Dune",
			"description": "A desert planet is the site of political intrigue and power struggles.",
			"author":      "Frank Herbert",
			"year":        1965,
		},
		{
			"name":        "Foundation",
			"description": "A mathematician develops a science to predict the future of humanity and works to save civilization from collapse.",
			"author":      "Isaac Asimov",
			"year":        1951,
		},
		{
			"name":        "Snow Crash",
			"description": "A futuristic world where the internet has evolved into a virtual reality metaverse.",
			"author":      "Neal Stephenson",
			"year":        1992,
		},
		{
			"name":        "Neuromancer",
			"description": "A hacker is hired to pull off a near-impossible hack and gets pulled into a web of intrigue.",
			"author":      "William Gibson",
			"year":        1984,
		},
		{
			"name":        "The War of the Worlds",
			"description": "A Martian invasion of Earth throws humanity into chaos.",
			"author":      "H.G. Wells",
			"year":        1898,
		},
		{
			"name":        "The Hunger Games",
			"description": "A dystopian society where teenagers are forced to fight to the death in a televised spectacle.",
			"author":      "Suzanne Collins",
			"year":        2008,
		},
		{
			"name":        "The Andromeda Strain",
			"description": "A deadly virus from outer space threatens to wipe out humanity.",
			"author":      "Michael Crichton",
			"year":        1969,
		},
		{
			"name":        "The Left Hand of Darkness",
			"description": "A human ambassador is sent to a planet where the inhabitants are genderless and can change gender at will.",
			"author":      "Ursula K. Le Guin",
			"year":        1969,
		},
		{
			"name":        "The Three-Body Problem",
			"description": "Humans encounter an alien civilization that lives in a dying system.",
			"author":      "Liu Cixin",
			"year":        2008,
		},
	}
	// @block-end upload-data

	// @block-start upload-points
	embeddingModel := "sentence-transformers/all-minilm-l6-v2"

	points := make([]*qdrant.PointStruct, len(documents))
	for idx, doc := range documents {
		points[idx] = &qdrant.PointStruct{
			Id: qdrant.NewIDNum(uint64(idx)),
			Vectors: qdrant.NewVectorsDocument(&qdrant.Document{
				Text:  doc["description"].(string),
				Model: embeddingModel,
			}),
			Payload: qdrant.NewValueMap(doc),
		}
	}

	client.Upsert(context.Background(), &qdrant.UpsertPoints{
		CollectionName: collectionName,
		Points:         points,
	})
	// @block-end upload-points

	// @block-start query-engine
	queryResult, err := client.Query(context.Background(), &qdrant.QueryPoints{
		CollectionName: collectionName,
		Query: qdrant.NewQueryDocument(&qdrant.Document{
			Text:  "alien invasion",
			Model: embeddingModel,
		}),
		Limit: qdrant.PtrOf(uint64(3)),
	})

	// @hide-start
	if err != nil {
		panic(err)
	}
	// @hide-end

	for _, hit := range queryResult {
		fmt.Println(hit.Payload, "score:", hit.Score)
	}
	// @block-end query-engine

	// @block-start create-payload-index
	client.CreateFieldIndex(context.Background(), &qdrant.CreateFieldIndexCollection{
		CollectionName: collectionName,
		FieldName:      "year",
		FieldType:      qdrant.FieldType_FieldTypeInteger.Enum(),
	})
	// @block-end create-payload-index

	// @block-start query-with-filter
	queryResultFiltered, err := client.Query(context.Background(), &qdrant.QueryPoints{
		CollectionName: collectionName,
		Query: qdrant.NewQueryDocument(&qdrant.Document{
			Text:  "alien invasion",
			Model: embeddingModel,
		}),
		Filter: &qdrant.Filter{
			Must: []*qdrant.Condition{
				qdrant.NewRange("year", &qdrant.Range{
					Gte: qdrant.PtrOf(2000.0),
				}),
			},
		},
		Limit: qdrant.PtrOf(uint64(1)),
	})

	// @hide-start
	if err != nil {
		panic(err)
	}
	// @hide-end

	for _, hit := range queryResultFiltered {
		fmt.Println(hit.Payload, "score:", hit.Score)
	}
	// @block-end query-with-filter
}