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Copy pathBasicAuthRequestInterceptor.java
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68 lines (60 loc) · 2.39 KB
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/**
* Copyright 2012-2020 The Feign Authors
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package feign.auth;
import java.nio.charset.Charset;
import feign.RequestInterceptor;
import feign.RequestTemplate;
import static feign.Util.ISO_8859_1;
import static feign.Util.checkNotNull;
/**
* An interceptor that adds the request header needed to use HTTP basic authentication.
*/
public class BasicAuthRequestInterceptor implements RequestInterceptor {
private final String headerValue;
/**
* Creates an interceptor that authenticates all requests with the specified username and password
* encoded using ISO-8859-1.
*
* @param username the username to use for authentication
* @param password the password to use for authentication
*/
public BasicAuthRequestInterceptor(String username, String password) {
this(username, password, ISO_8859_1);
}
/**
* Creates an interceptor that authenticates all requests with the specified username and password
* encoded using the specified charset.
*
* @param username the username to use for authentication
* @param password the password to use for authentication
* @param charset the charset to use when encoding the credentials
*/
public BasicAuthRequestInterceptor(String username, String password, Charset charset) {
checkNotNull(username, "username");
checkNotNull(password, "password");
this.headerValue = "Basic " + base64Encode((username + ":" + password).getBytes(charset));
}
/*
* This uses a Sun internal method; if we ever encounter a case where this method is not
* available, the appropriate response would be to pull the necessary portions of Guava's
* BaseEncoding class into Util.
*/
private static String base64Encode(byte[] bytes) {
return Base64.encode(bytes);
}
@Override
public void apply(RequestTemplate template) {
template.header("Authorization", headerValue);
}
}