Java.libraries.feign.auth.HttpBearerAuth.mustache Maven / Gradle / Ivy
package {{invokerPackage}}.auth;
import feign.RequestInterceptor;
import feign.RequestTemplate;
import java.util.Optional;
import java.util.function.Supplier;
/**
* An interceptor that adds the request header needed to use HTTP bearer authentication.
*/
public class HttpBearerAuth implements RequestInterceptor {
private final String scheme;
private Supplier tokenSupplier;
public HttpBearerAuth(String scheme) {
this.scheme = scheme;
}
/**
* Gets the token, which together with the scheme, will be sent as the value of the Authorization header.
*
* @return The bearer token
*/
public String getBearerToken() {
return tokenSupplier.get();
}
/**
* Sets the token, which together with the scheme, will be sent as the value of the Authorization header.
*
* @param bearerToken The bearer token to send in the Authorization header
*/
public void setBearerToken(String bearerToken) {
this.tokenSupplier = () -> bearerToken;
}
/**
* Sets the supplier of tokens, which together with the scheme, will be sent as the value of the Authorization header.
*
* @param tokenSupplier The supplier of bearer tokens to send in the Authorization header
*/
public void setBearerToken(Supplier tokenSupplier) {
this.tokenSupplier = tokenSupplier;
}
@Override
public void apply(RequestTemplate template) {
String bearerToken = Optional.ofNullable(tokenSupplier).map(Supplier::get).orElse(null);
if (bearerToken == null) {
return;
}
template.header("Authorization", (scheme != null ? upperCaseBearer(scheme) + " " : "") + bearerToken);
}
private static String upperCaseBearer(String scheme) {
return ("bearer".equalsIgnoreCase(scheme)) ? "Bearer" : scheme;
}
}