-
Notifications
You must be signed in to change notification settings - Fork 11
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
1 parent
5d5faf0
commit 31d5838
Showing
5 changed files
with
222 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,208 @@ | ||
| package ai | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "context" | ||
| "encoding/json" | ||
| "fmt" | ||
| "io" | ||
| "net/http" | ||
| "time" | ||
|
|
||
| "github.com/Southclaws/storyden/internal/config" | ||
| "github.com/openai/openai-go/packages/ssestream" | ||
| ) | ||
|
|
||
| const ( | ||
| DefaultEndpoint = "https://api.perplexity.ai/chat/completions" | ||
| DefautTimeout = 10 * time.Second | ||
| ) | ||
|
|
||
| const ( | ||
| Llama_3_1SonarSmall_128kChat = "llama-3.1-sonar-small-128k-chat" | ||
| Llama_3_1SonarLarge_128kChat = "llama-3.1-sonar-large-128k-chat" | ||
| Llama_3_1SonarSmall_128kOnline = "llama-3.1-sonar-small-128k-online" | ||
| Llama_3_1SonarLarge_128kOnline = "llama-3.1-sonar-large-128k-online" | ||
| Llama_3_1_8bInstruct = "llama-3.1-8b-instruct" | ||
| Llama_3_1_70bInstruct = "llama-3.1-70b-instruct" | ||
| ) | ||
|
|
||
| type Message struct { | ||
| Role string `json:"role"` | ||
| Content string `json:"content"` | ||
| } | ||
|
|
||
| type CompletionRequest struct { | ||
| Messages []Message `json:"messages"` | ||
| Model string `json:"model"` | ||
| Stream bool `json:"stream"` | ||
| } | ||
|
|
||
| type Usage struct { | ||
| PromptTokens int `json:"prompt_tokens"` | ||
| CompletionTokens int `json:"completion_tokens"` | ||
| TotalTokens int `json:"total_tokens"` | ||
| } | ||
|
|
||
| type Choice struct { | ||
| Index int `json:"index"` | ||
| FinishReason string `json:"finish_reason"` | ||
| Message Message `json:"message"` | ||
| Delta Message `json:"delta"` | ||
| } | ||
|
|
||
| type CompletionResponse struct { | ||
| ID string `json:"id"` | ||
| Model string `json:"model"` | ||
| Created int `json:"created"` | ||
| Usage Usage `json:"usage"` | ||
| Citations []string `json:"citations"` | ||
| Object string `json:"object"` | ||
| Choices []Choice `json:"choices"` | ||
| } | ||
|
|
||
| type Perplexity struct { | ||
| endpoint string | ||
| apiKey string | ||
| model string | ||
| httpClient *http.Client | ||
| httpTimeout time.Duration | ||
| } | ||
|
|
||
| func newPerplexity(cfg config.Config) (*Perplexity, error) { | ||
| s := &Perplexity{ | ||
| apiKey: cfg.PerplexityAPIKey, | ||
| endpoint: DefaultEndpoint, | ||
| model: Llama_3_1SonarSmall_128kChat, | ||
| httpClient: &http.Client{}, | ||
| httpTimeout: DefautTimeout, | ||
| } | ||
| return s, nil | ||
| } | ||
|
|
||
| func (s *Perplexity) Prompt(ctx context.Context, input string) (*Result, error) { | ||
| r := &CompletionResponse{} | ||
|
|
||
| reqBody := CompletionRequest{ | ||
| Messages: []Message{{Role: "user", Content: input}}, | ||
| Model: s.model, | ||
| } | ||
|
|
||
| requestBody, err := json.Marshal(reqBody) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to marshal request body: %w", err) | ||
| } | ||
|
|
||
| ctx, cancel := context.WithDeadline(ctx, time.Now().Add(s.httpTimeout)) | ||
| defer cancel() | ||
|
|
||
| req, err := http.NewRequestWithContext(ctx, "POST", s.endpoint, bytes.NewBuffer(requestBody)) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to create request: %w", err) | ||
| } | ||
|
|
||
| req.Header.Set("Authorization", "Bearer "+s.apiKey) | ||
| req.Header.Set("Content-Type", "application/json") | ||
|
|
||
| resp, err := s.httpClient.Do(req) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to send request: %w", err) | ||
| } | ||
| defer resp.Body.Close() | ||
|
|
||
| if resp.StatusCode != http.StatusOK { | ||
| if resp.StatusCode == http.StatusUnauthorized { | ||
| return nil, fmt.Errorf("unauthorized: check your API key") | ||
| } | ||
| return nil, fmt.Errorf("unexpected status code: %d", resp.StatusCode) | ||
| } | ||
|
|
||
| body, err := io.ReadAll(resp.Body) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to read response body: %w", err) | ||
| } | ||
|
|
||
| err = json.Unmarshal(body, r) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to unmarshal response body: %w - body response=%s", err, string(body)) | ||
| } | ||
|
|
||
| return &Result{ | ||
| Answer: r.Choices[0].Message.Content, | ||
| }, nil | ||
| } | ||
|
|
||
| func (s *Perplexity) PromptStream(ctx context.Context, input string) (chan string, chan error) { | ||
| outch := make(chan string) | ||
| errch := make(chan error) | ||
|
|
||
| resp, err := func() (*http.Response, error) { | ||
| reqBody := CompletionRequest{ | ||
| Stream: true, | ||
| Messages: []Message{{Role: "user", Content: input}}, | ||
| Model: s.model, | ||
| } | ||
|
|
||
| requestBody, err := json.Marshal(reqBody) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to marshal request body: %w", err) | ||
| } | ||
|
|
||
| req, err := http.NewRequestWithContext(ctx, "POST", s.endpoint, bytes.NewBuffer(requestBody)) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to create request: %w", err) | ||
| } | ||
|
|
||
| req.Header.Set("Authorization", "Bearer "+s.apiKey) | ||
| req.Header.Set("Content-Type", "application/json") | ||
|
|
||
| resp, err := s.httpClient.Do(req) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to send request: %w", err) | ||
| } | ||
|
|
||
| return resp, nil | ||
| }() | ||
| if err != nil { | ||
| errch <- err | ||
| return outch, errch | ||
| } | ||
|
|
||
| dec := ssestream.NewDecoder(resp) | ||
|
|
||
| go func() { | ||
| defer resp.Body.Close() | ||
| defer close(outch) | ||
| defer close(errch) | ||
|
|
||
| for dec.Next() { | ||
| event := dec.Event() | ||
| var cr CompletionResponse | ||
|
|
||
| if err := json.Unmarshal(event.Data, &cr); err != nil { | ||
| errch <- fmt.Errorf("failed to unmarshal SSE event: %w", err) | ||
| return | ||
| } | ||
|
|
||
| outch <- cr.Choices[0].Delta.Content | ||
|
|
||
| if cr.Choices[0].FinishReason == "stop" { | ||
| break | ||
| } | ||
| } | ||
|
|
||
| if dec.Err() != nil { | ||
| errch <- fmt.Errorf("failed to read SSE stream: %w", dec.Err()) | ||
| } | ||
| }() | ||
|
|
||
| return outch, errch | ||
| } | ||
|
|
||
| func replaceCitations(message string, citations []string) string { | ||
| return message | ||
| } | ||
|
|
||
| func (o *Perplexity) EmbeddingFunc() func(ctx context.Context, text string) ([]float32, error) { | ||
| panic("not implemented") | ||
| } |