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embedder.go
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embedder.go
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package ollama
import (
"context"
"encoding/json"
"net/http"
"net/url"
"strings"
"github.com/adrianliechti/llama/pkg/provider"
)
var _ provider.Embedder = (*Embedder)(nil)
type Embedder struct {
*Config
}
func NewEmbedder(url string, options ...Option) (*Embedder, error) {
if url == "" {
url = "http://localhost:11434"
}
c := &Config{
url: url,
client: http.DefaultClient,
}
for _, option := range options {
option(c)
}
go c.ensureModel()
return &Embedder{
Config: c,
}, nil
}
func (e *Embedder) Embed(ctx context.Context, content string) (provider.Embeddings, error) {
body := &EmbeddingRequest{
Model: e.model,
Prompt: strings.TrimSpace(content),
}
u, _ := url.JoinPath(e.url, "/api/embeddings")
resp, err := e.client.Post(u, "application/json", jsonReader(body))
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return nil, convertError(resp)
}
var result EmbeddingResponse
if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
return nil, err
}
return toFloat32s(result.Embedding), nil
}
type EmbeddingRequest struct {
Model string `json:"model"`
Prompt string `json:"prompt"`
}
type EmbeddingResponse struct {
Embedding []float64 `json:"embedding"`
}