79 lines
1.9 KiB
Go
79 lines
1.9 KiB
Go
package embeddings
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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)
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type OllamaEmbeddings struct {
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Endpoint string
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Model string
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}
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func NewOllamaEmbeddings(endpoint string, model string) *OllamaEmbeddings {
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return &OllamaEmbeddings{
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Endpoint: endpoint,
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Model: model,
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}
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}
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// Vectorize generates an embedding for the provided text
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func (o *OllamaEmbeddings) Vectorize(text string) ([][]float32, error) {
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// Define the request payload
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payload := map[string]string{
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"model": o.Model,
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"input": text,
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}
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// Convert the payload to JSON
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jsonData, err := json.Marshal(payload)
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if err != nil {
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return nil, fmt.Errorf("failed to marshal request payload: %w", err)
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}
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// Create the HTTP request
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url := fmt.Sprintf("%s/api/embed", o.Endpoint)
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req, err := http.NewRequest("POST", url, bytes.NewBuffer(jsonData))
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if err != nil {
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return nil, fmt.Errorf("failed to create HTTP request: %w", err)
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}
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req.Header.Set("Content-Type", "application/json")
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// Execute the HTTP request
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client := &http.Client{}
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resp, err := client.Do(req)
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if err != nil {
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return nil, fmt.Errorf("failed to make HTTP request: %w", err)
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}
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defer resp.Body.Close()
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// Check for non-200 status code
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if resp.StatusCode != http.StatusOK {
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body, _ := io.ReadAll(resp.Body)
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return nil, fmt.Errorf("received non-200 response: %s", body)
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}
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// Read and parse the response body
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body, err := io.ReadAll(resp.Body)
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if err != nil {
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return nil, fmt.Errorf("failed to read response body: %w", err)
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}
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// Assuming the response JSON contains an "embedding" field with a float32 array
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var response struct {
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Embeddings [][]float32 `json:"embeddings"`
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}
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if err := json.Unmarshal(body, &response); err != nil {
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return nil, fmt.Errorf("failed to unmarshal response: %w", err)
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}
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return response.Embeddings, nil
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}
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func (o *OllamaEmbeddings) GetModel() string {
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return o.Model
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}
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