Route monitoring TG classification through AI service

internal/aiservice/client.go

@@ -0,0 +1,207 @@
+package aiservice
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+	"time"
+)
+
+type Client struct {
+	baseURL string
+	token   string
+	http    *http.Client
+}
+
+type Message struct {
+	Role    string `json:"role"`
+	Content string `json:"content"`
+}
+
+type ChatInput struct {
+	Messages       []Message       `json:"messages"`
+	Temperature    float64         `json:"temperature"`
+	MaxTokens      int             `json:"max_tokens,omitempty"`
+	ResponseFormat json.RawMessage `json:"response_format,omitempty"`
+}
+
+type CreateJobRequest struct {
+	OwnerService   string          `json:"owner_service"`
+	OwnerRef       string          `json:"owner_ref"`
+	TaskType       string          `json:"task_type"`
+	ModelProfile   string          `json:"model_profile"`
+	Priority       int             `json:"priority"`
+	MaxAttempts    int             `json:"max_attempts"`
+	Input          json.RawMessage `json:"input"`
+	IdempotencyKey string          `json:"idempotency_key,omitempty"`
+}
+
+type Job struct {
+	ID           string          `json:"id"`
+	Status       string          `json:"status"`
+	Result       json.RawMessage `json:"result,omitempty"`
+	ErrorCode    *string         `json:"error_code,omitempty"`
+	ErrorMessage *string         `json:"error_message,omitempty"`
+}
+
+type ChatResult struct {
+	Content    string `json:"content"`
+	Model      string `json:"model"`
+	DurationMS int64  `json:"duration_ms"`
+}
+
+type ProvidersStatus struct {
+	At        time.Time        `json:"at"`
+	Providers []ProviderStatus `json:"providers"`
+}
+
+type ProviderStatus struct {
+	Name       string `json:"name"`
+	Configured bool   `json:"configured"`
+	OK         bool   `json:"ok"`
+	URL        string `json:"url,omitempty"`
+	Model      string `json:"model,omitempty"`
+	LatencyMS  int64  `json:"latency_ms,omitempty"`
+	Error      string `json:"error,omitempty"`
+}
+
+func New(baseURL, token string, timeout time.Duration) *Client {
+	baseURL = strings.TrimRight(strings.TrimSpace(baseURL), "/")
+	if baseURL == "" {
+		return nil
+	}
+	if timeout <= 0 {
+		timeout = 2 * time.Minute
+	}
+	return &Client{
+		baseURL: baseURL,
+		token:   strings.TrimSpace(token),
+		http:    &http.Client{Timeout: timeout},
+	}
+}
+
+func (c *Client) CreateJob(ctx context.Context, req CreateJobRequest) (*Job, error) {
+	if c == nil {
+		return nil, fmt.Errorf("ai-service not configured")
+	}
+	body, err := json.Marshal(req)
+	if err != nil {
+		return nil, fmt.Errorf("marshal ai job: %w", err)
+	}
+	httpReq, err := c.request(ctx, http.MethodPost, "/api/v1/jobs", body)
+	if err != nil {
+		return nil, err
+	}
+	resp, err := c.http.Do(httpReq)
+	if err != nil {
+		return nil, fmt.Errorf("create ai job: %w", err)
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return nil, fmt.Errorf("create ai job: http %d: %s", resp.StatusCode, readSmall(resp.Body))
+	}
+	var out Job
+	if err := json.NewDecoder(resp.Body).Decode(&out); err != nil {
+		return nil, fmt.Errorf("decode ai job: %w", err)
+	}
+	return &out, nil
+}
+
+func (c *Client) GetJob(ctx context.Context, id string) (*Job, error) {
+	if c == nil || strings.TrimSpace(id) == "" {
+		return nil, fmt.Errorf("ai job id is required")
+	}
+	req, err := c.request(ctx, http.MethodGet, "/api/v1/jobs/"+id, nil)
+	if err != nil {
+		return nil, err
+	}
+	resp, err := c.http.Do(req)
+	if err != nil {
+		return nil, fmt.Errorf("get ai job: %w", err)
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return nil, fmt.Errorf("get ai job: http %d: %s", resp.StatusCode, readSmall(resp.Body))
+	}
+	var out Job
+	if err := json.NewDecoder(resp.Body).Decode(&out); err != nil {
+		return nil, fmt.Errorf("decode ai job: %w", err)
+	}
+	return &out, nil
+}
+
+func (c *Client) WaitJob(ctx context.Context, id string, pollInterval time.Duration) (*Job, error) {
+	if pollInterval <= 0 {
+		pollInterval = 2 * time.Second
+	}
+	ticker := time.NewTicker(pollInterval)
+	defer ticker.Stop()
+	for {
+		job, err := c.GetJob(ctx, id)
+		if err != nil {
+			return nil, err
+		}
+		switch job.Status {
+		case "done", "failed", "cancelled":
+			return job, nil
+		}
+		select {
+		case <-ctx.Done():
+			return nil, ctx.Err()
+		case <-ticker.C:
+		}
+	}
+}
+
+func (c *Client) ProvidersStatus(ctx context.Context) (*ProvidersStatus, error) {
+	if c == nil {
+		return nil, fmt.Errorf("ai-service not configured")
+	}
+	req, err := c.request(ctx, http.MethodGet, "/api/v1/providers/status", nil)
+	if err != nil {
+		return nil, err
+	}
+	resp, err := c.http.Do(req)
+	if err != nil {
+		return nil, fmt.Errorf("ai providers status: %w", err)
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return nil, fmt.Errorf("ai providers status: http %d: %s", resp.StatusCode, readSmall(resp.Body))
+	}
+	var out ProvidersStatus
+	if err := json.NewDecoder(resp.Body).Decode(&out); err != nil {
+		return nil, fmt.Errorf("decode ai providers status: %w", err)
+	}
+	return &out, nil
+}
+
+func (c *Client) request(ctx context.Context, method, path string, body []byte) (*http.Request, error) {
+	var r io.Reader
+	if body != nil {
+		r = bytes.NewReader(body)
+	}
+	req, err := http.NewRequestWithContext(ctx, method, c.baseURL+path, r)
+	if err != nil {
+		return nil, err
+	}
+	if body != nil {
+		req.Header.Set("Content-Type", "application/json")
+	}
+	if c.token != "" {
+		req.Header.Set("Authorization", "Bearer "+c.token)
+	}
+	return req, nil
+}
+
+func readSmall(r io.Reader) string {
+	body, err := io.ReadAll(io.LimitReader(r, 1024))
+	if err != nil {
+		return err.Error()
+	}
+	return strings.TrimSpace(string(body))
+}