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Add support for SASL/OAUTHBEARER (#230)
* add support for SASL/OAUTHBEARER * rename oauthbearer -> oauth * mention OAUTHBEARER in reference config
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| package kafka | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/base64" | ||
| "encoding/json" | ||
| "fmt" | ||
| "net/http" | ||
| "net/url" | ||
| "strings" | ||
| ) | ||
|
|
||
| type OAuthBearerConfig struct { | ||
| TokenEndpoint string `koanf:"tokenEndpoint"` | ||
| ClientID string `koanf:"clientId"` | ||
| ClientSecret string `koanf:"clientSecret"` | ||
| Scope string `koanf:"scope"` | ||
| } | ||
|
|
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| func (c *OAuthBearerConfig) Validate() error { | ||
| if c.TokenEndpoint == "" { | ||
| return fmt.Errorf("OAuthBearer token endpoint is not specified") | ||
| } | ||
| if c.ClientID == "" || c.ClientSecret == "" { | ||
| return fmt.Errorf("OAuthBearer client credentials are not specified") | ||
| } | ||
| return nil | ||
| } | ||
|
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| // same as AcquireToken in Console https://github.com/redpanda-data/console/blob/master/backend/pkg/config/kafka_sasl_oauth.go#L56 | ||
| func (c *OAuthBearerConfig) getToken(ctx context.Context) (string, error) { | ||
| authHeaderValue := base64.StdEncoding.EncodeToString([]byte(c.ClientID + ":" + c.ClientSecret)) | ||
|
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| queryParams := url.Values{ | ||
| "grant_type": []string{"client_credentials"}, | ||
| "scope": []string{c.Scope}, | ||
| } | ||
|
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| req, err := http.NewRequestWithContext(ctx, "POST", c.TokenEndpoint, strings.NewReader(queryParams.Encode())) | ||
| if err != nil { | ||
| return "", fmt.Errorf("failed to create HTTP request: %w", err) | ||
| } | ||
|
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| req.URL.RawQuery = queryParams.Encode() | ||
|
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| req.Header.Set("Authorization", "Basic "+authHeaderValue) | ||
| req.Header.Set("Content-Type", "application/x-www-form-urlencoded") | ||
|
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| client := &http.Client{} | ||
|
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| resp, err := client.Do(req) | ||
| if err != nil { | ||
| return "", fmt.Errorf("HTTP request failed: %w", err) | ||
| } | ||
| defer resp.Body.Close() | ||
|
|
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| if resp.StatusCode != http.StatusOK { | ||
| return "", fmt.Errorf("token request failed with status code %d", resp.StatusCode) | ||
| } | ||
|
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| var tokenResponse map[string]interface{} | ||
| decoder := json.NewDecoder(resp.Body) | ||
| if err := decoder.Decode(&tokenResponse); err != nil { | ||
| return "", fmt.Errorf("failed to parse token response: %w", err) | ||
| } | ||
|
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| accessToken, ok := tokenResponse["access_token"].(string) | ||
| if !ok { | ||
| return "", fmt.Errorf("access_token not found in token response") | ||
| } | ||
|
|
||
| return accessToken, nil | ||
| } |