134 lines
2.7 KiB
Go
134 lines
2.7 KiB
Go
package permissions
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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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"io"
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"net/http"
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"net/url"
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"strings"
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"time"
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"github.com/labstack/echo/v4"
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"go.uber.org/zap"
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)
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const defaultPermissionsURL = "https://permissions-api.hollow-a.sv15.metalkube.net"
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var defaultHTTPClient = &http.Client{
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Timeout: 5 * time.Second, // nolint:gomnd // unexported
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}
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// Client is the permissions client.
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type Client struct {
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logger *zap.SugaredLogger
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httpClient *http.Client
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token string
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baseURL *url.URL
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allowURL *url.URL
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}
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// Do executes the provided request.
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// If the out value is provided, the response will attempt to be json decoded.
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func (c *Client) Do(req *http.Request, out any) (*http.Response, error) {
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if c.token != "" {
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req.Header.Set(echo.HeaderAuthorization, "Bearer "+c.token)
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}
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req.Header.Set("Content-Type", "application/json")
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resp, err := c.httpClient.Do(req)
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if err != nil {
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return nil, err
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}
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if out != nil {
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defer resp.Body.Close()
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if err := json.NewDecoder(resp.Body).Decode(out); err != nil {
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return resp, err
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}
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}
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return resp, nil
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}
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// DoRequest creates a new request from the provided parameters and executes the request.
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func (c *Client) DoRequest(ctx context.Context, method, path string, body io.Reader, out any) (*http.Response, error) {
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path = strings.TrimPrefix(path, c.baseURL.Path)
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pathURL, err := url.Parse(path)
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if err != nil {
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return nil, err
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}
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url := c.baseURL.JoinPath(pathURL.Path)
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query := url.Query()
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for k, v := range pathURL.Query() {
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query[k] = v
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}
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url.RawQuery = query.Encode()
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req, err := http.NewRequestWithContext(ctx, method, url.String(), body)
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if err != nil {
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return nil, fmt.Errorf("failed to build request: %w", err)
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}
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resp, err := c.Do(req, out)
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if err != nil {
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return nil, fmt.Errorf("failed to get response: %w", err)
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}
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if resp.StatusCode < http.StatusOK || resp.StatusCode >= http.StatusMultipleChoices {
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return resp, fmt.Errorf("unexpected status code: %d", resp.StatusCode)
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}
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return resp, nil
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}
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func encodeJSON(v any) (*bytes.Buffer, error) {
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var buff bytes.Buffer
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if err := json.NewEncoder(&buff).Encode(v); err != nil {
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return nil, err
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}
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return &buff, nil
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}
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// NewClient creats a new permissions client.
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func NewClient(token string, options ...Option) (*Client, error) {
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client := &Client{
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logger: zap.NewNop().Sugar(),
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httpClient: defaultHTTPClient,
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token: token,
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}
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for _, opt := range options {
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if err := opt(client); err != nil {
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return nil, err
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}
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}
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if client.baseURL == nil {
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uri, err := url.Parse(defaultPermissionsURL)
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if err != nil {
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return nil, err
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}
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client.baseURL = uri
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}
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client.allowURL = client.baseURL.JoinPath("/api/v1/allow")
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return client, nil
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}
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