78 lines
2.1 KiB
Go
78 lines
2.1 KiB
Go
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// Package identityclient calls identity-svc's internal endpoints for render-charge
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// consume/refund (service-to-service, shared service token).
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package identityclient
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"net/http"
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"time"
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"github.com/google/uuid"
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)
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type Client struct {
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baseURL string
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token string
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http *http.Client
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}
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func New(baseURL, token string) *Client {
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return &Client{baseURL: baseURL, token: token, http: &http.Client{Timeout: 8 * time.Second}}
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}
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func (c *Client) configured() bool { return c.baseURL != "" }
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type consumeResp struct {
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Allowed bool `json:"allowed"`
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Remaining int `json:"remaining"`
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}
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func (c *Client) post(ctx context.Context, path string, userID uuid.UUID) (*http.Response, error) {
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body, _ := json.Marshal(map[string]string{"user_id": userID.String()})
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req, err := http.NewRequestWithContext(ctx, http.MethodPost, c.baseURL+path, bytes.NewReader(body))
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if err != nil {
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return nil, err
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}
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req.Header.Set("Content-Type", "application/json")
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req.Header.Set("X-Service-Token", c.token)
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return c.http.Do(req)
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}
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// Consume decrements the user's daily render count. Returns whether the render is
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// allowed. Fails OPEN (allowed=true) if identity is unreachable, to avoid blocking
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// renders on a transient outage.
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func (c *Client) Consume(ctx context.Context, userID uuid.UUID) (bool, error) {
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if !c.configured() {
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return true, nil
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}
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resp, err := c.post(ctx, "/v1/internal/render-charge/consume", userID)
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if err != nil {
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return true, err
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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return true, fmt.Errorf("consume status %d", resp.StatusCode)
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}
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var r consumeResp
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if err := json.NewDecoder(resp.Body).Decode(&r); err != nil {
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return true, err
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}
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return r.Allowed, nil
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}
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// Refund returns one render to the user's daily count (admin-stop only).
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func (c *Client) Refund(ctx context.Context, userID uuid.UUID) error {
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if !c.configured() {
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return nil
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}
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resp, err := c.post(ctx, "/v1/internal/render-charge/refund", userID)
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if err != nil {
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return err
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}
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resp.Body.Close()
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return nil
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}
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